diff options
Diffstat (limited to 'newlib/libc/sys/linux/net')
101 files changed, 29346 insertions, 0 deletions
diff --git a/newlib/libc/sys/linux/net/Makefile.am b/newlib/libc/sys/linux/net/Makefile.am new file mode 100644 index 000000000..3298d2d9f --- /dev/null +++ b/newlib/libc/sys/linux/net/Makefile.am @@ -0,0 +1,89 @@ +## Process this file with automake to generate Makefile.in + +AUTOMAKE_OPTIONS = cygnus + +INCLUDES = -I$(srcdir)/../include $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS) + +LIB_SOURCES = addr2ascii.c ascii2addr.c base64.c bindresvport.c ether_addr.c getaddrinfo.c \ + gethostbydns.c gethostbyht.c gethostbynis.c gethostnamadr.c \ + getifaddrs.c getnameinfo.c \ + getnetbydns.c getnetbyht.c getnetbynis.c getnetnamadr.c \ + getproto.c getprotoent.c getprotoname.c getservbyname.c \ + getservbyport.c getservent.c herror.c hesiod.c inet_addr.c \ + ifname.c inet_lnaof.c \ + inet_makeaddr.c inet_net_ntop.c inet_net_pton.c inet_neta.c \ + inet_netof.c inet_network.c inet_ntoa.c inet_ntop.c \ + inet_pton.c innetgr-stub.c ip6opt.c issetugid-stub.c \ + linkaddr.c map_v4v6.c namespace.h un-namespace.h \ + name6.c ns_addr.c \ + ns_name.c ns_netint.c \ + ns_ntoa.c ns_parse.c ns_print.c ns_ttl.c \ + nsdispatch.c nslexer.c nsparser.c nsparser.h \ + nsap_addr.c res_comp.c res_data.c res_debug.c \ + res_init.c res_mkquery.c res_mkupdate.c res_query.c \ + res_send.c res_update.c rthdr.c vars.c + +ELIX_4_OBJS = \ + rcmd.$(oext) \ + rcmdsh.$(oext) + +if ELIX_LEVEL_1 +LIB_OBJS = +else +if ELIX_LEVEL_2 +LIB_OBJS = +else +if ELIX_LEVEL_3 +LIB_OBJS = +else +LIB_OBJS = $(ELIX_4_OBJS) +endif +endif +endif + +libnet_la_LDFLAGS = -Xcompiler -nostdlib +libnet_la_CFLAGS = -DINET6 + +if USE_LIBTOOL +noinst_LTLIBRARIES = libnet.la +libnet_la_SOURCES = $(LIB_SOURCES) +libnet_la_LIBADD = $(LIB_OBJS) +libnet_la_DEPENDENCIES = $(LIB_OBJS) +noinst_DATA = objectlist.awk.in +else +noinst_LIBRARIES = lib.a +lib_a_SOURCES = $(LIB_SOURCES) +lib_a_LIBADD = $(LIB_OBJS) +lib_a_DEPENDENCIES = $(LIB_OBJS) +noinst_DATA = +endif # USE_LIBTOOL + +include $(srcdir)/../../../../Makefile.shared + +install-data-local: + $(start-sanitize-elix) \ + $(mkinstalldirs) $(DESTDIR)$(tooldir)/include/arpa; \ + for i in $(srcdir)/../include/arpa/*.h; do \ + $(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/arpa/`basename $$i`; \ + done; \ + $(mkinstalldirs) $(DESTDIR)$(tooldir)/include/net; \ + for i in $(srcdir)/../include/net/*.h; do \ + $(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/net/`basename $$i`; \ + done; \ + $(mkinstalldirs) $(DESTDIR)$(tooldir)/include/netinet; \ + for i in $(srcdir)/../include/netinet/*.h; do \ + $(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/netinet/`basename $$i`; \ + done; \ + $(mkinstalldirs) $(DESTDIR)$(tooldir)/include/netinet6; \ + for i in $(srcdir)/../include/netinet6/*.h; do \ + $(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/netinet6/`basename $$i`; \ + done; \ + $(mkinstalldirs) $(DESTDIR)$(tooldir)/include/netns; \ + for i in $(srcdir)/../include/netns/*.h; do \ + $(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/netns/`basename $$i`; \ + done; \ + $(mkinstalldirs) $(DESTDIR)$(tooldir)/include/rpc; \ + for i in $(srcdir)/../include/rpc/*.h; do \ + $(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/rpc/`basename $$i`; \ + done; \ + $(end-sanitize-elix) diff --git a/newlib/libc/sys/linux/net/Makefile.in b/newlib/libc/sys/linux/net/Makefile.in new file mode 100644 index 000000000..70f835c4a --- /dev/null +++ b/newlib/libc/sys/linux/net/Makefile.in @@ -0,0 +1,466 @@ +# Makefile.in generated automatically by automake 1.4 from Makefile.am + +# Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + + + +SHELL = @SHELL@ + +srcdir = @srcdir@ +top_srcdir = @top_srcdir@ +VPATH = @srcdir@ +prefix = @prefix@ +exec_prefix = @exec_prefix@ + +bindir = @bindir@ +sbindir = @sbindir@ +libexecdir = @libexecdir@ +datadir = @datadir@ +sysconfdir = @sysconfdir@ +sharedstatedir = @sharedstatedir@ +localstatedir = @localstatedir@ +libdir = @libdir@ +infodir = @infodir@ +mandir = @mandir@ +includedir = @includedir@ +oldincludedir = /usr/include + +DESTDIR = + +pkgdatadir = $(datadir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ + +top_builddir = .. + +ACLOCAL = @ACLOCAL@ +AUTOCONF = @AUTOCONF@ +AUTOMAKE = @AUTOMAKE@ +AUTOHEADER = @AUTOHEADER@ + +INSTALL = @INSTALL@ +INSTALL_PROGRAM = @INSTALL_PROGRAM@ $(AM_INSTALL_PROGRAM_FLAGS) +INSTALL_DATA = @INSTALL_DATA@ +INSTALL_SCRIPT = @INSTALL_SCRIPT@ +transform = @program_transform_name@ + +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_alias = @build_alias@ +build_triplet = @build@ +host_alias = @host_alias@ +host_triplet = @host@ +target_alias = @target_alias@ +target_triplet = @target@ +AR = @AR@ +AS = @AS@ +AWK = @AWK@ +CC = @CC@ +CPP = @CPP@ +CXX = @CXX@ +CXXCPP = @CXXCPP@ +DLLTOOL = @DLLTOOL@ +EXEEXT = @EXEEXT@ +GCJ = @GCJ@ +GCJFLAGS = @GCJFLAGS@ +LDFLAGS = @LDFLAGS@ +LIBTOOL = @LIBTOOL@ +LINUX_MACH_LIB = @LINUX_MACH_LIB@ +LN_S = @LN_S@ +MAINT = @MAINT@ +MAKEINFO = @MAKEINFO@ +NEWLIB_CFLAGS = @NEWLIB_CFLAGS@ +OBJDUMP = @OBJDUMP@ +OBJEXT = @OBJEXT@ +PACKAGE = @PACKAGE@ +RANLIB = @RANLIB@ +STRIP = @STRIP@ +VERSION = @VERSION@ +aext = @aext@ +libm_machine_dir = @libm_machine_dir@ +machine_dir = @machine_dir@ +newlib_basedir = @newlib_basedir@ +oext = @oext@ +sys_dir = @sys_dir@ + +AUTOMAKE_OPTIONS = cygnus + +INCLUDES = -I$(srcdir)/../include $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS) + +LIB_SOURCES = addr2ascii.c ascii2addr.c base64.c bindresvport.c ether_addr.c getaddrinfo.c \ + gethostbydns.c gethostbyht.c gethostbynis.c gethostnamadr.c \ + getifaddrs.c getnameinfo.c \ + getnetbydns.c getnetbyht.c getnetbynis.c getnetnamadr.c \ + getproto.c getprotoent.c getprotoname.c getservbyname.c \ + getservbyport.c getservent.c herror.c hesiod.c inet_addr.c \ + ifname.c inet_lnaof.c \ + inet_makeaddr.c inet_net_ntop.c inet_net_pton.c inet_neta.c \ + inet_netof.c inet_network.c inet_ntoa.c inet_ntop.c \ + inet_pton.c innetgr-stub.c ip6opt.c issetugid-stub.c \ + linkaddr.c map_v4v6.c namespace.h un-namespace.h \ + name6.c ns_addr.c \ + ns_name.c ns_netint.c \ + ns_ntoa.c ns_parse.c ns_print.c ns_ttl.c \ + nsdispatch.c nslexer.c nsparser.c nsparser.h \ + nsap_addr.c res_comp.c res_data.c res_debug.c \ + res_init.c res_mkquery.c res_mkupdate.c res_query.c \ + res_send.c res_update.c rthdr.c vars.c + + +ELIX_4_OBJS = \ + rcmd.$(oext) \ + rcmdsh.$(oext) + +@ELIX_LEVEL_1_TRUE@LIB_OBJS = +@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_TRUE@LIB_OBJS = +@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_TRUE@LIB_OBJS = +@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@LIB_OBJS = @ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@$(ELIX_4_OBJS) + +libnet_la_LDFLAGS = -Xcompiler -nostdlib +libnet_la_CFLAGS = -DINET6 + +@USE_LIBTOOL_TRUE@noinst_LTLIBRARIES = @USE_LIBTOOL_TRUE@libnet.la +@USE_LIBTOOL_TRUE@libnet_la_SOURCES = @USE_LIBTOOL_TRUE@$(LIB_SOURCES) +@USE_LIBTOOL_TRUE@libnet_la_LIBADD = @USE_LIBTOOL_TRUE@$(LIB_OBJS) +@USE_LIBTOOL_TRUE@libnet_la_DEPENDENCIES = @USE_LIBTOOL_TRUE@$(LIB_OBJS) +@USE_LIBTOOL_TRUE@noinst_DATA = @USE_LIBTOOL_TRUE@objectlist.awk.in +@USE_LIBTOOL_FALSE@noinst_DATA = +@USE_LIBTOOL_FALSE@noinst_LIBRARIES = @USE_LIBTOOL_FALSE@lib.a +@USE_LIBTOOL_FALSE@lib_a_SOURCES = @USE_LIBTOOL_FALSE@$(LIB_SOURCES) +@USE_LIBTOOL_FALSE@lib_a_LIBADD = @USE_LIBTOOL_FALSE@$(LIB_OBJS) +@USE_LIBTOOL_FALSE@lib_a_DEPENDENCIES = @USE_LIBTOOL_FALSE@$(LIB_OBJS) +mkinstalldirs = $(SHELL) $(top_srcdir)/../../../../mkinstalldirs +CONFIG_CLEAN_FILES = +LIBRARIES = $(noinst_LIBRARIES) + + +DEFS = @DEFS@ -I. -I$(srcdir) +CPPFLAGS = @CPPFLAGS@ +LIBS = @LIBS@ +@USE_LIBTOOL_FALSE@lib_a_OBJECTS = addr2ascii.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@ascii2addr.$(OBJEXT) base64.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@bindresvport.$(OBJEXT) ether_addr.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@getaddrinfo.$(OBJEXT) gethostbydns.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@gethostbyht.$(OBJEXT) gethostbynis.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@gethostnamadr.$(OBJEXT) getifaddrs.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@getnameinfo.$(OBJEXT) getnetbydns.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@getnetbyht.$(OBJEXT) getnetbynis.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@getnetnamadr.$(OBJEXT) getproto.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@getprotoent.$(OBJEXT) getprotoname.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@getservbyname.$(OBJEXT) getservbyport.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@getservent.$(OBJEXT) herror.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@hesiod.$(OBJEXT) inet_addr.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@ifname.$(OBJEXT) inet_lnaof.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@inet_makeaddr.$(OBJEXT) inet_net_ntop.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@inet_net_pton.$(OBJEXT) inet_neta.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@inet_netof.$(OBJEXT) inet_network.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@inet_ntoa.$(OBJEXT) inet_ntop.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@inet_pton.$(OBJEXT) innetgr-stub.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@ip6opt.$(OBJEXT) issetugid-stub.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@linkaddr.$(OBJEXT) map_v4v6.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@name6.$(OBJEXT) ns_addr.$(OBJEXT) ns_name.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@ns_netint.$(OBJEXT) ns_ntoa.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@ns_parse.$(OBJEXT) ns_print.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@ns_ttl.$(OBJEXT) nsdispatch.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@nslexer.$(OBJEXT) nsparser.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@nsap_addr.$(OBJEXT) res_comp.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@res_data.$(OBJEXT) res_debug.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@res_init.$(OBJEXT) res_mkquery.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@res_mkupdate.$(OBJEXT) res_query.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@res_send.$(OBJEXT) res_update.$(OBJEXT) \ +@USE_LIBTOOL_FALSE@rthdr.$(OBJEXT) vars.$(OBJEXT) +LTLIBRARIES = $(noinst_LTLIBRARIES) + +@USE_LIBTOOL_TRUE@libnet_la_OBJECTS = addr2ascii.lo ascii2addr.lo \ +@USE_LIBTOOL_TRUE@base64.lo bindresvport.lo ether_addr.lo \ +@USE_LIBTOOL_TRUE@getaddrinfo.lo gethostbydns.lo gethostbyht.lo \ +@USE_LIBTOOL_TRUE@gethostbynis.lo gethostnamadr.lo getifaddrs.lo \ +@USE_LIBTOOL_TRUE@getnameinfo.lo getnetbydns.lo getnetbyht.lo \ +@USE_LIBTOOL_TRUE@getnetbynis.lo getnetnamadr.lo getproto.lo \ +@USE_LIBTOOL_TRUE@getprotoent.lo getprotoname.lo getservbyname.lo \ +@USE_LIBTOOL_TRUE@getservbyport.lo getservent.lo herror.lo hesiod.lo \ +@USE_LIBTOOL_TRUE@inet_addr.lo ifname.lo inet_lnaof.lo inet_makeaddr.lo \ +@USE_LIBTOOL_TRUE@inet_net_ntop.lo inet_net_pton.lo inet_neta.lo \ +@USE_LIBTOOL_TRUE@inet_netof.lo inet_network.lo inet_ntoa.lo \ +@USE_LIBTOOL_TRUE@inet_ntop.lo inet_pton.lo innetgr-stub.lo ip6opt.lo \ +@USE_LIBTOOL_TRUE@issetugid-stub.lo linkaddr.lo map_v4v6.lo name6.lo \ +@USE_LIBTOOL_TRUE@ns_addr.lo ns_name.lo ns_netint.lo ns_ntoa.lo \ +@USE_LIBTOOL_TRUE@ns_parse.lo ns_print.lo ns_ttl.lo nsdispatch.lo \ +@USE_LIBTOOL_TRUE@nslexer.lo nsparser.lo nsap_addr.lo res_comp.lo \ +@USE_LIBTOOL_TRUE@res_data.lo res_debug.lo res_init.lo res_mkquery.lo \ +@USE_LIBTOOL_TRUE@res_mkupdate.lo res_query.lo res_send.lo \ +@USE_LIBTOOL_TRUE@res_update.lo rthdr.lo vars.lo +CFLAGS = @CFLAGS@ +COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) +LTCOMPILE = $(LIBTOOL) --mode=compile $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) +CCLD = $(CC) +LINK = $(LIBTOOL) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ +DATA = $(noinst_DATA) + +DIST_COMMON = Makefile.am Makefile.in + + +DISTFILES = $(DIST_COMMON) $(SOURCES) $(HEADERS) $(TEXINFOS) $(EXTRA_DIST) + +TAR = gtar +GZIP_ENV = --best +SOURCES = $(lib_a_SOURCES) $(libnet_la_SOURCES) +OBJECTS = $(lib_a_OBJECTS) $(libnet_la_OBJECTS) + +all: all-redirect +.SUFFIXES: +.SUFFIXES: .S .c .lo .o .obj .s +$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ Makefile.am $(top_srcdir)/configure.in $(ACLOCAL_M4) $(srcdir)/../../../../Makefile.shared + cd $(top_srcdir) && $(AUTOMAKE) --cygnus net/Makefile + +Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status + cd $(top_builddir) \ + && CONFIG_FILES=$(subdir)/$@ CONFIG_HEADERS= $(SHELL) ./config.status + + +mostlyclean-noinstLIBRARIES: + +clean-noinstLIBRARIES: + -test -z "$(noinst_LIBRARIES)" || rm -f $(noinst_LIBRARIES) + +distclean-noinstLIBRARIES: + +maintainer-clean-noinstLIBRARIES: + +.c.o: + $(COMPILE) -c $< + +# FIXME: We should only use cygpath when building on Windows, +# and only if it is available. +.c.obj: + $(COMPILE) -c `cygpath -w $<` + +.s.o: + $(COMPILE) -c $< + +.S.o: + $(COMPILE) -c $< + +mostlyclean-compile: + -rm -f *.o core *.core + -rm -f *.$(OBJEXT) + +clean-compile: + +distclean-compile: + -rm -f *.tab.c + +maintainer-clean-compile: + +.c.lo: + $(LIBTOOL) --mode=compile $(COMPILE) -c $< + +.s.lo: + $(LIBTOOL) --mode=compile $(COMPILE) -c $< + +.S.lo: + $(LIBTOOL) --mode=compile $(COMPILE) -c $< + +mostlyclean-libtool: + -rm -f *.lo + +clean-libtool: + -rm -rf .libs _libs + +distclean-libtool: + +maintainer-clean-libtool: + +lib.a: $(lib_a_OBJECTS) $(lib_a_DEPENDENCIES) + -rm -f lib.a + $(AR) cru lib.a $(lib_a_OBJECTS) $(lib_a_LIBADD) + $(RANLIB) lib.a + +mostlyclean-noinstLTLIBRARIES: + +clean-noinstLTLIBRARIES: + -test -z "$(noinst_LTLIBRARIES)" || rm -f $(noinst_LTLIBRARIES) + +distclean-noinstLTLIBRARIES: + +maintainer-clean-noinstLTLIBRARIES: + +libnet.la: $(libnet_la_OBJECTS) $(libnet_la_DEPENDENCIES) + $(LINK) $(libnet_la_LDFLAGS) $(libnet_la_OBJECTS) $(libnet_la_LIBADD) $(LIBS) + +tags: TAGS + +ID: $(HEADERS) $(SOURCES) $(LISP) + list='$(SOURCES) $(HEADERS)'; \ + unique=`for i in $$list; do echo $$i; done | \ + awk ' { files[$$0] = 1; } \ + END { for (i in files) print i; }'`; \ + here=`pwd` && cd $(srcdir) \ + && mkid -f$$here/ID $$unique $(LISP) + +TAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) $(LISP) + tags=; \ + here=`pwd`; \ + list='$(SOURCES) $(HEADERS)'; \ + unique=`for i in $$list; do echo $$i; done | \ + awk ' { files[$$0] = 1; } \ + END { for (i in files) print i; }'`; \ + test -z "$(ETAGS_ARGS)$$unique$(LISP)$$tags" \ + || (cd $(srcdir) && etags $(ETAGS_ARGS) $$tags $$unique $(LISP) -o $$here/TAGS) + +mostlyclean-tags: + +clean-tags: + +distclean-tags: + -rm -f TAGS ID + +maintainer-clean-tags: + +distdir = $(top_builddir)/$(PACKAGE)-$(VERSION)/$(subdir) + +subdir = net + +distdir: $(DISTFILES) + @for file in $(DISTFILES); do \ + if test -f $$file; then d=.; else d=$(srcdir); fi; \ + if test -d $$d/$$file; then \ + cp -pr $$d/$$file $(distdir)/$$file; \ + else \ + test -f $(distdir)/$$file \ + || ln $$d/$$file $(distdir)/$$file 2> /dev/null \ + || cp -p $$d/$$file $(distdir)/$$file || :; \ + fi; \ + done +info-am: +info: info-am +dvi-am: +dvi: dvi-am +check-am: +check: check-am +installcheck-am: +installcheck: installcheck-am +install-info-am: +install-info: install-info-am +install-exec-am: +install-exec: install-exec-am + +install-data-am: install-data-local +install-data: install-data-am + +install-am: all-am + @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am +install: install-am +uninstall-am: +uninstall: uninstall-am +all-am: Makefile $(LIBRARIES) $(LTLIBRARIES) $(DATA) +all-redirect: all-am +install-strip: + $(MAKE) $(AM_MAKEFLAGS) AM_INSTALL_PROGRAM_FLAGS=-s install +installdirs: + + +mostlyclean-generic: + +clean-generic: + +distclean-generic: + -rm -f Makefile $(CONFIG_CLEAN_FILES) + -rm -f config.cache config.log stamp-h stamp-h[0-9]* + +maintainer-clean-generic: +mostlyclean-am: mostlyclean-noinstLIBRARIES mostlyclean-compile \ + mostlyclean-libtool mostlyclean-noinstLTLIBRARIES \ + mostlyclean-tags mostlyclean-generic + +mostlyclean: mostlyclean-am + +clean-am: clean-noinstLIBRARIES clean-compile clean-libtool \ + clean-noinstLTLIBRARIES clean-tags clean-generic \ + mostlyclean-am + +clean: clean-am + +distclean-am: distclean-noinstLIBRARIES distclean-compile \ + distclean-libtool distclean-noinstLTLIBRARIES \ + distclean-tags distclean-generic clean-am + -rm -f libtool + +distclean: distclean-am + +maintainer-clean-am: maintainer-clean-noinstLIBRARIES \ + maintainer-clean-compile maintainer-clean-libtool \ + maintainer-clean-noinstLTLIBRARIES \ + maintainer-clean-tags maintainer-clean-generic \ + distclean-am + @echo "This command is intended for maintainers to use;" + @echo "it deletes files that may require special tools to rebuild." + +maintainer-clean: maintainer-clean-am + +.PHONY: mostlyclean-noinstLIBRARIES distclean-noinstLIBRARIES \ +clean-noinstLIBRARIES maintainer-clean-noinstLIBRARIES \ +mostlyclean-compile distclean-compile clean-compile \ +maintainer-clean-compile mostlyclean-libtool distclean-libtool \ +clean-libtool maintainer-clean-libtool mostlyclean-noinstLTLIBRARIES \ +distclean-noinstLTLIBRARIES clean-noinstLTLIBRARIES \ +maintainer-clean-noinstLTLIBRARIES tags mostlyclean-tags distclean-tags \ +clean-tags maintainer-clean-tags distdir info-am info dvi-am dvi check \ +check-am installcheck-am installcheck install-info-am install-info \ +install-exec-am install-exec install-data-local install-data-am \ +install-data install-am install uninstall-am uninstall all-redirect \ +all-am all installdirs mostlyclean-generic distclean-generic \ +clean-generic maintainer-clean-generic clean mostlyclean distclean \ +maintainer-clean + + +objectlist.awk.in: $(noinst_LTLIBRARIES) + -rm -f objectlist.awk.in + for i in `ls *.lo` ; \ + do \ + echo $$i `pwd`/$$i >> objectlist.awk.in ; \ + done + +install-data-local: + $(start-sanitize-elix) \ + $(mkinstalldirs) $(DESTDIR)$(tooldir)/include/arpa; \ + for i in $(srcdir)/../include/arpa/*.h; do \ + $(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/arpa/`basename $$i`; \ + done; \ + $(mkinstalldirs) $(DESTDIR)$(tooldir)/include/net; \ + for i in $(srcdir)/../include/net/*.h; do \ + $(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/net/`basename $$i`; \ + done; \ + $(mkinstalldirs) $(DESTDIR)$(tooldir)/include/netinet; \ + for i in $(srcdir)/../include/netinet/*.h; do \ + $(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/netinet/`basename $$i`; \ + done; \ + $(mkinstalldirs) $(DESTDIR)$(tooldir)/include/netinet6; \ + for i in $(srcdir)/../include/netinet6/*.h; do \ + $(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/netinet6/`basename $$i`; \ + done; \ + $(mkinstalldirs) $(DESTDIR)$(tooldir)/include/netns; \ + for i in $(srcdir)/../include/netns/*.h; do \ + $(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/netns/`basename $$i`; \ + done; \ + $(mkinstalldirs) $(DESTDIR)$(tooldir)/include/rpc; \ + for i in $(srcdir)/../include/rpc/*.h; do \ + $(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/rpc/`basename $$i`; \ + done; \ + $(end-sanitize-elix) + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/newlib/libc/sys/linux/net/addr2ascii.3 b/newlib/libc/sys/linux/net/addr2ascii.3 new file mode 100644 index 000000000..10b1ac7f9 --- /dev/null +++ b/newlib/libc/sys/linux/net/addr2ascii.3 @@ -0,0 +1,222 @@ +.\" +.\" Copyright 1996 Massachusetts Institute of Technology +.\" +.\" Permission to use, copy, modify, and distribute this software and +.\" its documentation for any purpose and without fee is hereby +.\" granted, provided that both the above copyright notice and this +.\" permission notice appear in all copies, that both the above +.\" copyright notice and this permission notice appear in all +.\" supporting documentation, and that the name of M.I.T. not be used +.\" in advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. M.I.T. makes +.\" no representations about the suitability of this software for any +.\" purpose. It is provided "as is" without express or implied +.\" warranty. +.\" +.\" THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS +.\" ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, +.\" INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT +.\" SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +.\" LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +.\" USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +.\" ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT +.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $ANA: addr2ascii.3,v 1.1 1996/06/13 18:41:46 wollman Exp $ +.\" $FreeBSD: src/lib/libc/net/addr2ascii.3,v 1.12 2001/10/01 16:08:55 ru Exp $ +.\" +.Dd June 13, 1996 +.Dt ADDR2ASCII 3 +.Os +.Sh NAME +.Nm addr2ascii , +.Nm ascii2addr +.Nd Generic address formatting routines +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In netinet/in.h +.In arpa/inet.h +.Ft "char *" +.Fn addr2ascii "int af" "const void *addrp" "int len" "char *buf" +.Ft int +.Fn ascii2addr "int af" "const char *ascii" "void *result" +.Sh DESCRIPTION +The routines +.Fn addr2ascii +and +.Fn ascii2addr +are used to convert network addresses between binary form and a +printable form appropriate to the address family. Both functions take +an +.Fa af +argument, specifying the address family to be used in the conversion +process. +(Currently, only the +.Dv AF_INET +and +.Dv AF_LINK +address families are supported.) +.Pp +The +.Fn addr2ascii +function +is used to convert binary, network-format addresses into printable +form. In addition to +.Fa af , +there are three other arguments. The +.Fa addrp +argument is a pointer to the network address to be converted. +The +.Fa len +argument is the length of the address. The +.Fa buf +argument is an optional pointer to a caller-allocated buffer to hold +the result; if a null pointer is passed, +.Fn addr2ascii +uses a statically-allocated buffer. +.Pp +The +.Fn ascii2addr +function performs the inverse operation to +.Fn addr2ascii . +In addition to +.Fa af , +it takes two parameters, +.Fa ascii +and +.Fa result . +The +.Fa ascii +parameter is a pointer to the string which is to be converted into +binary. The +.Fa result +parameter is a pointer to an appropriate network address structure for +the specified family. +.Pp +The following gives the appropriate structure to use for binary +addresses in the specified family: +.Pp +.Bl -tag -width AF_INETxxxx -compact +.It Dv AF_INET +.Li struct in_addr +(in +.Aq Pa netinet/in.h ) +.It Dv AF_LINK +.Li struct sockaddr_dl +(in +.Aq Pa net/if_dl.h ) +.\" .It Dv AF_INET6 +.\" .Li struct in6_addr +.\" (in +.\" .Aq Pa netinet6/in6.h ) +.El +.Sh RETURN VALUES +The +.Fn addr2ascii +function returns the address of the buffer it was passed, or a static +buffer if the a null pointer was passed; on failure, it returns a null +pointer. +The +.Fn ascii2addr +function returns the length of the binary address in bytes, or -1 on +failure. +.Sh EXAMPLES +The +.Xr inet 3 +functions +.Fn inet_ntoa +and +.Fn inet_aton +could be implemented thusly: +.Bd -literal -offset indent +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> + +char * +inet_ntoa(struct in_addr addr) +{ + return addr2ascii(AF_INET, &addr, sizeof addr, 0); +} + +int +inet_aton(const char *ascii, struct in_addr *addr) +{ + return (ascii2addr(AF_INET, ascii, addr) + == sizeof(*addr)); +} +.Ed +.Pp +In actuality, this cannot be done because +.Fn addr2ascii +and +.Fn ascii2addr +are implemented in terms of the +.Xr inet 3 +functions, rather than the other way around. +.Sh ERRORS +When a failure is returned, +.Li errno +is set to one of the following values: +.Bl -tag -width Er +.It Bq Er ENAMETOOLONG +The +.Fn addr2ascii +routine was passed a +.Fa len +parameter which was inappropriate for the address family given by +.Fa af . +.It Bq Er EPROTONOSUPPORT +Either routine was passed an +.Fa af +parameter other than +.Dv AF_INET +or +.Dv AF_LINK . +.It Bq Er EINVAL +The string passed to +.Fn ascii2addr +was improperly formatted for address family +.Fa af . +.El +.Sh SEE ALSO +.Xr inet 3 , +.Xr linkaddr 3 , +.Xr inet 4 +.Sh HISTORY +An interface close to this one was originally suggested by Craig +Partridge. This particular interface originally appeared in the +.Tn INRIA +.Tn IPv6 +implementation. +.Sh AUTHORS +Code and documentation by +.An Garrett A. Wollman , +MIT Laboratory for Computer Science. +.Sh BUGS +The original implementations supported IPv6. This support should +eventually be resurrected. The +.Tn NRL +implementation also included support for the +.Dv AF_ISO +and +.Dv AF_NS +address families. +.Pp +The genericity of this interface is somewhat questionable. A truly +generic interface would provide a means for determining the length of +the buffer to be used so that it could be dynamically allocated, and +would always require a +.Dq Li "struct sockaddr" +to hold the binary address. Unfortunately, this is incompatible with existing +practice. This limitation means that a routine for printing network +addresses from arbitrary address families must still have internal +knowledge of the maximum buffer length needed and the appropriate part +of the address to use as the binary address. diff --git a/newlib/libc/sys/linux/net/addr2ascii.c b/newlib/libc/sys/linux/net/addr2ascii.c new file mode 100644 index 000000000..f095339cc --- /dev/null +++ b/newlib/libc/sys/linux/net/addr2ascii.c @@ -0,0 +1,86 @@ +/* + * Copyright 1996 Massachusetts Institute of Technology + * + * Permission to use, copy, modify, and distribute this software and + * its documentation for any purpose and without fee is hereby + * granted, provided that both the above copyright notice and this + * permission notice appear in all copies, that both the above + * copyright notice and this permission notice appear in all + * supporting documentation, and that the name of M.I.T. not be used + * in advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. M.I.T. makes + * no representations about the suitability of this software for any + * purpose. It is provided "as is" without express or implied + * warranty. + * + * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS + * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT + * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $ANA: addr2ascii.c,v 1.1 1996/06/13 18:41:46 wollman Exp $ + */ + +#include <sys/cdefs.h> + +#include <sys/types.h> +#include <sys/socket.h> + +#include <errno.h> +#include <string.h> + +#include <net/if_dl.h> +#include <netinet/in.h> +#include <arpa/inet.h> + +/*- + * Convert a network address from binary to printable numeric format. + * This API is copied from INRIA's IPv6 implementation, but it is a + * bit bogus in two ways: + * + * 1) There is no value in passing both an address family and + * an address length; either one should imply the other, + * or we should be passing sockaddrs instead. + * 2) There should by contrast be /added/ a length for the buffer + * that we pass in, so that programmers are spared the need to + * manually calculate (read: ``guess'') the maximum length. + * + * Flash: the API is also the same in the NRL implementation, and seems to + * be some sort of standard, so we appear to be stuck with both the bad + * naming and the poor choice of arguments. + */ +char * +addr2ascii(af, addrp, len, buf) + int af; + const void *addrp; + int len; /* should be size_t XXX */ + char *buf; /* XXX should pass length of buffer */ +{ + static char staticbuf[64]; /* 64 for AF_LINK > 16 for AF_INET */ + + if (!buf) + buf = staticbuf; + + switch(af) { + case AF_INET: + if (len != sizeof(struct in_addr)) { + errno = ENAMETOOLONG; + return 0; + } + strcpy(buf, inet_ntoa(*(const struct in_addr *)addrp)); + break; + + default: + errno = EPROTONOSUPPORT; + return 0; + } + return buf; +} diff --git a/newlib/libc/sys/linux/net/ascii2addr.c b/newlib/libc/sys/linux/net/ascii2addr.c new file mode 100644 index 000000000..f69e029f8 --- /dev/null +++ b/newlib/libc/sys/linux/net/ascii2addr.c @@ -0,0 +1,70 @@ +/* + * Copyright 1996 Massachusetts Institute of Technology + * + * Permission to use, copy, modify, and distribute this software and + * its documentation for any purpose and without fee is hereby + * granted, provided that both the above copyright notice and this + * permission notice appear in all copies, that both the above + * copyright notice and this permission notice appear in all + * supporting documentation, and that the name of M.I.T. not be used + * in advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. M.I.T. makes + * no representations about the suitability of this software for any + * purpose. It is provided "as is" without express or implied + * warranty. + * + * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS + * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT + * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $ANA: ascii2addr.c,v 1.2 1996/06/13 18:46:02 wollman Exp $ + */ + +#include <sys/cdefs.h> + +#include <sys/types.h> +#include <sys/types.h> +#include <sys/socket.h> + +#include <errno.h> +#include <string.h> + +#include <net/if_dl.h> +#include <netinet/in.h> +#include <arpa/inet.h> + +int +ascii2addr(af, ascii, result) + int af; + const char *ascii; + void *result; +{ + struct in_addr *ina; + char strbuf[4*sizeof("123")]; /* long enough for V4 only */ + + switch(af) { + case AF_INET: + ina = result; + strbuf[0] = '\0'; + strncat(strbuf, ascii, (sizeof strbuf)-1); + if (inet_aton(strbuf, ina)) + return sizeof(struct in_addr); + errno = EINVAL; + break; + + default: + errno = EPROTONOSUPPORT; + break; + } + + return -1; +} diff --git a/newlib/libc/sys/linux/net/base64.c b/newlib/libc/sys/linux/net/base64.c new file mode 100644 index 000000000..35f7d867b --- /dev/null +++ b/newlib/libc/sys/linux/net/base64.c @@ -0,0 +1,315 @@ +/* + * Copyright (c) 1996, 1998 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +/* + * Portions Copyright (c) 1995 by International Business Machines, Inc. + * + * International Business Machines, Inc. (hereinafter called IBM) grants + * permission under its copyrights to use, copy, modify, and distribute this + * Software with or without fee, provided that the above copyright notice and + * all paragraphs of this notice appear in all copies, and that the name of IBM + * not be used in connection with the marketing of any product incorporating + * the Software or modifications thereof, without specific, written prior + * permission. + * + * To the extent it has a right to do so, IBM grants an immunity from suit + * under its patents, if any, for the use, sale or manufacture of products to + * the extent that such products are used for performing Domain Name System + * dynamic updates in TCP/IP networks by means of the Software. No immunity is + * granted for any product per se or for any other function of any product. + * + * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL, + * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN + * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES. + */ + +#include <sys/cdefs.h> + +#include <sys/types.h> +#include <sys/types.h> +#include <sys/param.h> +#include <sys/socket.h> + +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> + +#include <ctype.h> +#include <resolv.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#define Assert(Cond) if (!(Cond)) abort() + +static const char Base64[] = + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; +static const char Pad64 = '='; + +/* (From RFC1521 and draft-ietf-dnssec-secext-03.txt) + The following encoding technique is taken from RFC 1521 by Borenstein + and Freed. It is reproduced here in a slightly edited form for + convenience. + + A 65-character subset of US-ASCII is used, enabling 6 bits to be + represented per printable character. (The extra 65th character, "=", + is used to signify a special processing function.) + + The encoding process represents 24-bit groups of input bits as output + strings of 4 encoded characters. Proceeding from left to right, a + 24-bit input group is formed by concatenating 3 8-bit input groups. + These 24 bits are then treated as 4 concatenated 6-bit groups, each + of which is translated into a single digit in the base64 alphabet. + + Each 6-bit group is used as an index into an array of 64 printable + characters. The character referenced by the index is placed in the + output string. + + Table 1: The Base64 Alphabet + + Value Encoding Value Encoding Value Encoding Value Encoding + 0 A 17 R 34 i 51 z + 1 B 18 S 35 j 52 0 + 2 C 19 T 36 k 53 1 + 3 D 20 U 37 l 54 2 + 4 E 21 V 38 m 55 3 + 5 F 22 W 39 n 56 4 + 6 G 23 X 40 o 57 5 + 7 H 24 Y 41 p 58 6 + 8 I 25 Z 42 q 59 7 + 9 J 26 a 43 r 60 8 + 10 K 27 b 44 s 61 9 + 11 L 28 c 45 t 62 + + 12 M 29 d 46 u 63 / + 13 N 30 e 47 v + 14 O 31 f 48 w (pad) = + 15 P 32 g 49 x + 16 Q 33 h 50 y + + Special processing is performed if fewer than 24 bits are available + at the end of the data being encoded. A full encoding quantum is + always completed at the end of a quantity. When fewer than 24 input + bits are available in an input group, zero bits are added (on the + right) to form an integral number of 6-bit groups. Padding at the + end of the data is performed using the '=' character. + + Since all base64 input is an integral number of octets, only the + ------------------------------------------------- + following cases can arise: + + (1) the final quantum of encoding input is an integral + multiple of 24 bits; here, the final unit of encoded + output will be an integral multiple of 4 characters + with no "=" padding, + (2) the final quantum of encoding input is exactly 8 bits; + here, the final unit of encoded output will be two + characters followed by two "=" padding characters, or + (3) the final quantum of encoding input is exactly 16 bits; + here, the final unit of encoded output will be three + characters followed by one "=" padding character. + */ + +int +b64_ntop(u_char const *src, size_t srclength, char *target, size_t targsize) { + size_t datalength = 0; + u_char input[3]; + u_char output[4]; + size_t i; + + while (2 < srclength) { + input[0] = *src++; + input[1] = *src++; + input[2] = *src++; + srclength -= 3; + + output[0] = input[0] >> 2; + output[1] = ((input[0] & 0x03) << 4) + (input[1] >> 4); + output[2] = ((input[1] & 0x0f) << 2) + (input[2] >> 6); + output[3] = input[2] & 0x3f; + Assert(output[0] < 64); + Assert(output[1] < 64); + Assert(output[2] < 64); + Assert(output[3] < 64); + + if (datalength + 4 > targsize) + return (-1); + target[datalength++] = Base64[output[0]]; + target[datalength++] = Base64[output[1]]; + target[datalength++] = Base64[output[2]]; + target[datalength++] = Base64[output[3]]; + } + + /* Now we worry about padding. */ + if (0 != srclength) { + /* Get what's left. */ + input[0] = input[1] = input[2] = '\0'; + for (i = 0; i < srclength; i++) + input[i] = *src++; + + output[0] = input[0] >> 2; + output[1] = ((input[0] & 0x03) << 4) + (input[1] >> 4); + output[2] = ((input[1] & 0x0f) << 2) + (input[2] >> 6); + Assert(output[0] < 64); + Assert(output[1] < 64); + Assert(output[2] < 64); + + if (datalength + 4 > targsize) + return (-1); + target[datalength++] = Base64[output[0]]; + target[datalength++] = Base64[output[1]]; + if (srclength == 1) + target[datalength++] = Pad64; + else + target[datalength++] = Base64[output[2]]; + target[datalength++] = Pad64; + } + if (datalength >= targsize) + return (-1); + target[datalength] = '\0'; /* Returned value doesn't count \0. */ + return (datalength); +} + +/* skips all whitespace anywhere. + converts characters, four at a time, starting at (or after) + src from base - 64 numbers into three 8 bit bytes in the target area. + it returns the number of data bytes stored at the target, or -1 on error. + */ + +int +b64_pton(src, target, targsize) + char const *src; + u_char *target; + size_t targsize; +{ + int tarindex, state, ch; + char *pos; + + state = 0; + tarindex = 0; + + while ((ch = *src++) != '\0') { + if (isspace((unsigned char)ch)) /* Skip whitespace anywhere. */ + continue; + + if (ch == Pad64) + break; + + pos = strchr(Base64, ch); + if (pos == 0) /* A non-base64 character. */ + return (-1); + + switch (state) { + case 0: + if (target) { + if ((size_t)tarindex >= targsize) + return (-1); + target[tarindex] = (pos - Base64) << 2; + } + state = 1; + break; + case 1: + if (target) { + if ((size_t)tarindex + 1 >= targsize) + return (-1); + target[tarindex] |= (pos - Base64) >> 4; + target[tarindex+1] = ((pos - Base64) & 0x0f) + << 4 ; + } + tarindex++; + state = 2; + break; + case 2: + if (target) { + if ((size_t)tarindex + 1 >= targsize) + return (-1); + target[tarindex] |= (pos - Base64) >> 2; + target[tarindex+1] = ((pos - Base64) & 0x03) + << 6; + } + tarindex++; + state = 3; + break; + case 3: + if (target) { + if ((size_t)tarindex >= targsize) + return (-1); + target[tarindex] |= (pos - Base64); + } + tarindex++; + state = 0; + break; + default: + abort(); + } + } + + /* + * We are done decoding Base-64 chars. Let's see if we ended + * on a byte boundary, and/or with erroneous trailing characters. + */ + + if (ch == Pad64) { /* We got a pad char. */ + ch = *src++; /* Skip it, get next. */ + switch (state) { + case 0: /* Invalid = in first position */ + case 1: /* Invalid = in second position */ + return (-1); + + case 2: /* Valid, means one byte of info */ + /* Skip any number of spaces. */ + for ((void)NULL; ch != '\0'; ch = *src++) + if (!isspace((unsigned char)ch)) + break; + /* Make sure there is another trailing = sign. */ + if (ch != Pad64) + return (-1); + ch = *src++; /* Skip the = */ + /* Fall through to "single trailing =" case. */ + /* FALLTHROUGH */ + + case 3: /* Valid, means two bytes of info */ + /* + * We know this char is an =. Is there anything but + * whitespace after it? + */ + for ((void)NULL; ch != '\0'; ch = *src++) + if (!isspace((unsigned char)ch)) + return (-1); + + /* + * Now make sure for cases 2 and 3 that the "extra" + * bits that slopped past the last full byte were + * zeros. If we don't check them, they become a + * subliminal channel. + */ + if (target && target[tarindex] != 0) + return (-1); + } + } else { + /* + * We ended by seeing the end of the string. Make sure we + * have no partial bytes lying around. + */ + if (state != 0) + return (-1); + } + + return (tarindex); +} diff --git a/newlib/libc/sys/linux/net/bindresvport.c b/newlib/libc/sys/linux/net/bindresvport.c new file mode 100644 index 000000000..7b595b4dc --- /dev/null +++ b/newlib/libc/sys/linux/net/bindresvport.c @@ -0,0 +1,160 @@ +/* $NetBSD: bindresvport.c,v 1.19 2000/07/06 03:03:59 christos Exp $ */ + +/* + * Sun RPC is a product of Sun Microsystems, Inc. and is provided for + * unrestricted use provided that this legend is included on all tape + * media and as a part of the software program in whole or part. Users + * may copy or modify Sun RPC without charge, but are not authorized + * to license or distribute it to anyone else except as part of a product or + * program developed by the user. + * + * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE + * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR + * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. + * + * Sun RPC is provided with no support and without any obligation on the + * part of Sun Microsystems, Inc. to assist in its use, correction, + * modification or enhancement. + * + * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE + * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC + * OR ANY PART THEREOF. + * + * In no event will Sun Microsystems, Inc. be liable for any lost revenue + * or profits or other special, indirect and consequential damages, even if + * Sun has been advised of the possibility of such damages. + * + * Sun Microsystems, Inc. + * 2550 Garcia Avenue + * Mountain View, California 94043 + */ + +#if defined(LIBC_SCCS) && !defined(lint) +/*static char *sccsid = "from: @(#)bindresvport.c 1.8 88/02/08 SMI";*/ +/*static char *sccsid = "from: @(#)bindresvport.c 2.2 88/07/29 4.0 RPCSRC";*/ +/*from: OpenBSD: bindresvport.c,v 1.7 1996/07/30 16:25:47 downsj Exp */ +#endif +#include <sys/cdefs.h> +#include <sys/types.h> + +/* + * Copyright (c) 1987 by Sun Microsystems, Inc. + * + * Portions Copyright(C) 1996, Jason Downs. All rights reserved. + */ + +#include "namespace.h" +#include <sys/types.h> +#include <sys/socket.h> + +#include <netinet/in.h> + +#include <errno.h> +#include <string.h> +#include <unistd.h> + +#include <rpc/rpc.h> + +#include <string.h> +#include "un-namespace.h" + +/* + * Bind a socket to a privileged IP port + */ +int +bindresvport(sd, sin) + int sd; + struct sockaddr_in *sin; +{ + return bindresvport_sa(sd, (struct sockaddr *)sin); +} + +/* + * Bind a socket to a privileged IP port + */ +int +bindresvport_sa(sd, sa) + int sd; + struct sockaddr *sa; +{ + int old, error, af; + struct sockaddr_storage myaddr; + struct sockaddr_in *sin; +#ifdef INET6 + struct sockaddr_in6 *sin6; +#endif + int proto, portrange, portlow; + u_int16_t *portp; + socklen_t salen; + + if (sa == NULL) { + salen = sizeof(myaddr); + sa = (struct sockaddr *)&myaddr; + + if (getsockname(sd, sa, &salen) == -1) + return -1; /* errno is correctly set */ + + af = sa->sa_family; + memset(sa, 0, salen); + } else + af = sa->sa_family; + + switch (af) { + case AF_INET: + proto = IPPROTO_IP; + portrange = IP_PORTRANGE; + portlow = IP_PORTRANGE_LOW; + sin = (struct sockaddr_in *)sa; + salen = sizeof(struct sockaddr_in); + portp = &sin->sin_port; + break; +#ifdef INET6 + case AF_INET6: + proto = IPPROTO_IPV6; + portrange = IPV6_PORTRANGE; + portlow = IPV6_PORTRANGE_LOW; + sin6 = (struct sockaddr_in6 *)sa; + salen = sizeof(struct sockaddr_in6); + portp = &sin6->sin6_port; + break; +#endif + default: + errno = EPFNOSUPPORT; + return (-1); + } + sa->sa_family = af; + + if (*portp == 0) { + socklen_t oldlen = sizeof(old); + + error = getsockopt(sd, proto, portrange, &old, &oldlen); + if (error < 0) + return (error); + + error = setsockopt(sd, proto, portrange, &portlow, + sizeof(portlow)); + if (error < 0) + return (error); + } + + error = bind(sd, sa, salen); + + if (*portp == 0) { + int saved_errno = errno; + + if (error < 0) { + if (setsockopt(sd, proto, portrange, &old, + sizeof(old)) < 0) + errno = saved_errno; + return (error); + } + + if (sa != (struct sockaddr *)&myaddr) { + /* Hmm, what did the kernel assign? */ + if (getsockname(sd, sa, &salen) < 0) + errno = saved_errno; + return (error); + } + } + return (error); +} diff --git a/newlib/libc/sys/linux/net/byteorder.3 b/newlib/libc/sys/linux/net/byteorder.3 new file mode 100644 index 000000000..062ac9d70 --- /dev/null +++ b/newlib/libc/sys/linux/net/byteorder.3 @@ -0,0 +1,84 @@ +.\" Copyright (c) 1983, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)byteorder.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD: src/lib/libc/net/byteorder.3,v 1.9 2001/12/08 19:06:23 ru Exp $ +.\" +.Dd June 4, 1993 +.Dt BYTEORDER 3 +.Os +.Sh NAME +.Nm htonl , +.Nm htons , +.Nm ntohl , +.Nm ntohs +.Nd convert values between host and network byte order +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In arpa/inet.h +.Ft uint32_t +.Fn htonl "uint32_t hostlong" +.Ft uint16_t +.Fn htons "uint16_t hostshort" +.Ft uint32_t +.Fn ntohl "uint32_t netlong" +.Ft uint16_t +.Fn ntohs "uint16_t netshort" +.Sh DESCRIPTION +These routines convert 16 and 32 bit quantities between network +byte order and host byte order. +On machines which have a byte order which is the same as the network +order, routines are defined as null macros. +.Pp +These routines are most often used in conjunction with Internet +addresses and ports as returned by +.Xr gethostbyname 3 +and +.Xr getservent 3 . +.Sh SEE ALSO +.Xr gethostbyname 3 , +.Xr getservent 3 +.Sh STANDARDS +The +.Nm byteorder +functions are expected to conform with +.St -p1003.1-2001 . +.Sh HISTORY +The +.Nm byteorder +functions appeared in +.Bx 4.2 . +.Sh BUGS +On the +.Tn VAX +bytes are handled backwards from most everyone else in +the world. This is not expected to be fixed in the near future. diff --git a/newlib/libc/sys/linux/net/ether_addr.c b/newlib/libc/sys/linux/net/ether_addr.c new file mode 100644 index 000000000..7d2b19f69 --- /dev/null +++ b/newlib/libc/sys/linux/net/ether_addr.c @@ -0,0 +1,231 @@ +/* + * Copyright (c) 1995 + * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Bill Paul. + * 4. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * ethernet address conversion and lookup routines + * + * Written by Bill Paul <wpaul@ctr.columbia.edu> + * Center for Telecommunications Research + * Columbia University, New York City + */ + +#include <sys/cdefs.h> + +#include <stdio.h> +#include <paths.h> +#include <sys/types.h> +#include <sys/types.h> +#include <string.h> +#include <stdlib.h> +#include <sys/param.h> +#include <sys/socket.h> +#include <net/ethernet.h> +#ifdef YP +#include <rpc/rpc.h> +#include <rpcsvc/yp_prot.h> +#include <rpcsvc/ypclnt.h> +#endif + +#ifndef _PATH_ETHERS +#define _PATH_ETHERS "/etc/ethers" +#endif + +/* + * Parse a string of text containing an ethernet address and hostname + * and separate it into its component parts. + */ +int +ether_line(l, e, hostname) + const char *l; + struct ether_addr *e; + char *hostname; +{ + int i, o[6]; + + i = sscanf(l, "%x:%x:%x:%x:%x:%x %s", &o[0], &o[1], &o[2], + &o[3], &o[4], &o[5], + hostname); + if (i != 7) + return (i); + + for (i=0; i<6; i++) + e->octet[i] = o[i]; + return (0); +} + +/* + * Convert an ASCII representation of an ethernet address to + * binary form. + */ +struct +ether_addr *ether_aton(a) + const char *a; +{ + int i; + static struct ether_addr o; + unsigned int o0, o1, o2, o3, o4, o5; + + i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o0, &o1, &o2, &o3, &o4, &o5); + + if (i != 6) + return (NULL); + + o.octet[0]=o0; + o.octet[1]=o1; + o.octet[2]=o2; + o.octet[3]=o3; + o.octet[4]=o4; + o.octet[5]=o5; + + return ((struct ether_addr *)&o); +} + +/* + * Convert a binary representation of an ethernet address to + * an ASCII string. + */ +char +*ether_ntoa(n) + const struct ether_addr *n; +{ + int i; + static char a[18]; + + i = sprintf(a, "%02x:%02x:%02x:%02x:%02x:%02x", + n->octet[0], n->octet[1], n->octet[2], + n->octet[3], n->octet[4], n->octet[5]); + if (i < 17) + return (NULL); + return ((char *)&a); +} + +/* + * Map an ethernet address to a hostname. Use either /etc/ethers or + * NIS/YP. + */ +int +ether_ntohost(hostname, e) + char *hostname; + const struct ether_addr *e; +{ + FILE *fp; + char buf[BUFSIZ + 2]; + struct ether_addr local_ether; + char local_host[MAXHOSTNAMELEN]; +#ifdef YP + char *result; + int resultlen; + char *ether_a; + char *yp_domain; +#endif + if ((fp = fopen(_PATH_ETHERS, "r")) == NULL) + return (1); + + while (fgets(buf,BUFSIZ,fp)) { + if (buf[0] == '#') + continue; +#ifdef YP + if (buf[0] == '+') { + if (yp_get_default_domain(&yp_domain)) + continue; + ether_a = ether_ntoa(e); + if (yp_match(yp_domain, "ethers.byaddr", ether_a, + strlen(ether_a), &result, &resultlen)) { + continue; + } + strncpy(buf, result, resultlen); + buf[resultlen] = '\0'; + free(result); + } +#endif + if (!ether_line(buf, &local_ether, local_host)) { + if (!memcmp((char *)&local_ether.octet[0], + (char *)&e->octet[0], 6)) { + /* We have a match */ + strcpy(hostname, local_host); + fclose(fp); + return(0); + } + } + } + fclose(fp); + return (1); +} + +/* + * Map a hostname to an ethernet address using /etc/ethers or + * NIS/YP. + */ +int +ether_hostton(hostname, e) + const char *hostname; + struct ether_addr *e; +{ + FILE *fp; + char buf[BUFSIZ + 2]; + struct ether_addr local_ether; + char local_host[MAXHOSTNAMELEN]; +#ifdef YP + char *result; + int resultlen; + char *yp_domain; +#endif + if ((fp = fopen(_PATH_ETHERS, "r")) == NULL) + return (1); + + while (fgets(buf,BUFSIZ,fp)) { + if (buf[0] == '#') + continue; +#ifdef YP + if (buf[0] == '+') { + if (yp_get_default_domain(&yp_domain)) + continue; + if (yp_match(yp_domain, "ethers.byname", hostname, + strlen(hostname), &result, &resultlen)) { + continue; + } + strncpy(buf, result, resultlen); + buf[resultlen] = '\0'; + free(result); + } +#endif + if (!ether_line(buf, &local_ether, local_host)) { + if (!strcmp(hostname, local_host)) { + /* We have a match */ + bcopy((char *)&local_ether.octet[0], + (char *)&e->octet[0], 6); + fclose(fp); + return(0); + } + } + } + fclose(fp); + return (1); +} diff --git a/newlib/libc/sys/linux/net/ethers.3 b/newlib/libc/sys/linux/net/ethers.3 new file mode 100644 index 000000000..7b7866fd9 --- /dev/null +++ b/newlib/libc/sys/linux/net/ethers.3 @@ -0,0 +1,197 @@ +.\" Copyright (c) 1995 +.\" Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by Bill Paul. +.\" 4. Neither the name of the author nor the names of any co-contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD: src/lib/libc/net/ethers.3,v 1.19 2002/01/14 16:59:00 ru Exp $ +.\" +.Dd April 12, 1995 +.Dt ETHERS 3 +.Os +.Sh NAME +.Nm ethers , +.Nm ether_line , +.Nm ether_aton , +.Nm ether_ntoa , +.Nm ether_ntohost , +.Nm ether_hostton +.Nd Ethernet address conversion and lookup routines +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/socket.h +.In net/ethernet.h +.Ft int +.Fn ether_line "const char *l" "struct ether_addr *e" "char *hostname" +.Ft struct ether_addr * +.Fn ether_aton "const char *a" +.Ft char * +.Fn ether_ntoa "const struct ether_addr *n" +.Ft int +.Fn ether_ntohost "char *hostname" "const struct ether_addr *e" +.Ft int +.Fn ether_hostton "const char *hostname" "struct ether_addr *e" +.Sh DESCRIPTION +These functions operate on ethernet addresses using an +.Ar ether_addr +structure, which is defined in the header file +.Aq Pa netinet/if_ether.h : +.Bd -literal -offset indent +/* + * The number of bytes in an ethernet (MAC) address. + */ +#define ETHER_ADDR_LEN 6 + +/* + * Structure of a 48-bit Ethernet address. + */ +struct ether_addr { + u_char octet[ETHER_ADDR_LEN]; +}; +.Ed +.Pp +The function +.Fn ether_line +scans +.Ar l , +an +.Tn ASCII +string in +.Xr ethers 5 +format and sets +.Ar e +to the ethernet address specified in the string and +.Ar h +to the hostname. +This function is used to parse lines from +.Pa /etc/ethers +into their component parts. +.Pp +The +.Fn ether_aton +function converts an +.Tn ASCII +representation of an ethernet address into an +.Ar ether_addr +structure. +Likewise, +.Fn ether_ntoa +converts an ethernet address specified as an +.Ar ether_addr +structure into an +.Tn ASCII +string. +.Pp +The +.Fn ether_ntohost +and +.Fn ether_hostton +functions map ethernet addresses to their corresponding hostnames +as specified in the +.Pa /etc/ethers +database. +.Fn ether_ntohost +converts from ethernet address to hostname, and +.Fn ether_hostton +converts from hostname to ethernet address. +.Sh RETURN VALUES +.Fn ether_line +returns zero on success and non-zero if it was unable to parse +any part of the supplied line +.Ar l . +It returns the extracted ethernet address in the supplied +.Ar ether_addr +structure +.Ar e +and the hostname in the supplied string +.Ar h . +.Pp +On success, +.Fn ether_ntoa +returns a pointer to a string containing an +.Tn ASCII +representation of an ethernet address. +If it is unable to convert +the supplied +.Ar ether_addr +structure, it returns a +.Dv NULL +pointer. +Likewise, +.Fn ether_aton +returns a pointer to an +.Ar ether_addr +structure on success and a +.Dv NULL +pointer on failure. +.Pp +The +.Fn ether_ntohost +and +.Fn ether_hostton +functions both return zero on success or non-zero if they were +unable to find a match in the +.Pa /etc/ethers +database. +.Sh NOTES +The user must insure that the hostname strings passed to the +.Fn ether_line , +.Fn ether_ntohost +and +.Fn ether_hostton +functions are large enough to contain the returned hostnames. +.Sh NIS INTERACTION +If the +.Pa /etc/ethers +contains a line with a single + in it, the +.Fn ether_ntohost +and +.Fn ether_hostton +functions will attempt to consult the NIS +.Pa ethers.byname +and +.Pa ethers.byaddr +maps in addition to the data in the +.Pa /etc/ethers +file. +.Sh SEE ALSO +.Xr ethers 5 , +.Xr yp 8 +.Sh BUGS +The +.Fn ether_aton +and +.Fn ether_ntoa +functions returns values that are stored in static memory areas +which may be overwritten the next time they are called. +.Sh HISTORY +This particular implementation of the +.Nm +library functions were written for and first appeared in +.Fx 2.1 . diff --git a/newlib/libc/sys/linux/net/getaddrinfo.3 b/newlib/libc/sys/linux/net/getaddrinfo.3 new file mode 100644 index 000000000..eca8b03b2 --- /dev/null +++ b/newlib/libc/sys/linux/net/getaddrinfo.3 @@ -0,0 +1,620 @@ +.\" $FreeBSD: src/lib/libc/net/getaddrinfo.3,v 1.18 2002/04/19 04:46:20 suz Exp $ +.\" $KAME: getaddrinfo.3,v 1.31 2001/08/05 18:19:38 itojun Exp $ +.\" +.\" Copyright (c) 1983, 1987, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" From: @(#)gethostbyname.3 8.4 (Berkeley) 5/25/95 +.\" +.Dd May 25, 1995 +.Dt GETADDRINFO 3 +.Os +.\" +.Sh NAME +.Nm getaddrinfo , +.Nm freeaddrinfo , +.Nm gai_strerror +.Nd nodename-to-address translation in protocol-independent manner +.\" +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/socket.h +.In netdb.h +.Ft int +.Fn getaddrinfo "const char *nodename" "const char *servname" \ +"const struct addrinfo *hints" "struct addrinfo **res" +.Ft void +.Fn freeaddrinfo "struct addrinfo *ai" +.Ft "char *" +.Fn gai_strerror "int ecode" +.\" +.Sh DESCRIPTION +The +.Fn getaddrinfo +function is defined for protocol-independent nodename-to-address translation. +It performs the functionality of +.Xr gethostbyname 3 +and +.Xr getservbyname 3 , +but in a more sophisticated manner. +.Pp +The +.Li addrinfo +structure is defined as a result of including the +.Aq Pa netdb.h +header: +.Bd -literal -offset +struct addrinfo { + int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */ + int ai_family; /* PF_xxx */ + int ai_socktype; /* SOCK_xxx */ + int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ + size_t ai_addrlen; /* length of ai_addr */ + char *ai_canonname; /* canonical name for nodename */ + struct sockaddr *ai_addr; /* binary address */ + struct addrinfo *ai_next; /* next structure in linked list */ +}; +.Ed +.Pp +The +.Fa nodename +and +.Fa servname +arguments are pointers to null-terminated strings or +.Dv NULL . +One or both of these two arguments must be a +.Pf non Dv -NULL +pointer. +In the normal client scenario, both the +.Fa nodename +and +.Fa servname +are specified. +In the normal server scenario, only the +.Fa servname +is specified. +A +.Pf non Dv -NULL +.Fa nodename +string can be either a node name or a numeric host address string +(i.e., a dotted-decimal IPv4 address or an IPv6 hex address). +A +.Pf non Dv -NULL +.Fa servname +string can be either a service name or a decimal port number. +.Pp +The caller can optionally pass an +.Li addrinfo +structure, pointed to by the third argument, +to provide hints concerning the type of socket that the caller supports. +In this +.Fa hints +structure all members other than +.Fa ai_flags , +.Fa ai_family , +.Fa ai_socktype , +and +.Fa ai_protocol +must be zero or a +.Dv NULL +pointer. +A value of +.Dv PF_UNSPEC +for +.Fa ai_family +means the caller will accept any protocol family. +A value of 0 for +.Fa ai_socktype +means the caller will accept any socket type. +A value of 0 for +.Fa ai_protocol +means the caller will accept any protocol. +For example, if the caller handles only TCP and not UDP, then the +.Fa ai_socktype +member of the hints structure should be set to +.Dv SOCK_STREAM +when +.Fn getaddrinfo +is called. +If the caller handles only IPv4 and not IPv6, then the +.Fa ai_family +member of the +.Fa hints +structure should be set to +.Dv PF_INET +when +.Fn getaddrinfo +is called. +If the third argument to +.Fn getaddrinfo +is a +.Dv NULL +pointer, this is the same as if the caller had filled in an +.Li addrinfo +structure initialized to zero with +.Fa ai_family +set to +.Dv PF_UNSPEC . +.Pp +Upon successful return a pointer to a linked list of one or more +.Li addrinfo +structures is returned through the final argument. +The caller can process each +.Li addrinfo +structure in this list by following the +.Fa ai_next +pointer, until a +.Dv NULL +pointer is encountered. +In each returned +.Li addrinfo +structure the three members +.Fa ai_family , +.Fa ai_socktype , +and +.Fa ai_protocol +are the corresponding arguments for a call to the +.Fn socket +function. +In each +.Li addrinfo +structure the +.Fa ai_addr +member points to a filled-in socket address structure whose length is +specified by the +.Fa ai_addrlen +member. +.Pp +If the +.Dv AI_PASSIVE +bit is set in the +.Fa ai_flags +member of the +.Fa hints +structure, then the caller plans to use the returned socket address +structure in a call to +.Fn bind . +In this case, if the +.Fa nodename +argument is a +.Dv NULL +pointer, then the IP address portion of the socket +address structure will be set to +.Dv INADDR_ANY +for an IPv4 address or +.Dv IN6ADDR_ANY_INIT +for an IPv6 address. +.Pp +If the +.Dv AI_PASSIVE +bit is not set in the +.Fa ai_flags +member of the +.Fa hints +structure, then the returned socket address structure will be ready for a +call to +.Fn connect +(for a connection-oriented protocol) +or either +.Fn connect , +.Fn sendto , +or +.Fn sendmsg +(for a connectionless protocol). +In this case, if the +.Fa nodename +argument is a +.Dv NULL +pointer, then the IP address portion of the +socket address structure will be set to the loopback address. +.Pp +If the +.Dv AI_CANONNAME +bit is set in the +.Fa ai_flags +member of the +.Fa hints +structure, then upon successful return the +.Fa ai_canonname +member of the first +.Li addrinfo +structure in the linked list will point to a null-terminated string +containing the canonical name of the specified +.Fa nodename . +.Pp +If the +.Dv AI_NUMERICHOST +bit is set in the +.Fa ai_flags +member of the +.Fa hints +structure, then a +.Pf non Dv -NULL +.Fa nodename +string must be a numeric host address string. +Otherwise an error of +.Dv EAI_NONAME +is returned. +This flag prevents any type of name resolution service (e.g., the DNS) +from being called. +.Pp +The arguments to +.Fn getaddrinfo +must be sufficiently consistent and unambiguous. +Here are some problem cases you may encounter: +.Bl -bullet +.It +.Fn getaddrinfo +will fail if the members in the +.Fa hints +structure are not consistent. +For example, for internet address families, +.Fn getaddrinfo +will fail if you specify +.Dv SOCK_STREAM +to +.Fa ai_socktype +while you specify +.Dv IPPROTO_UDP +to +.Fa ai_protocol . +.It +If you specify a +.Fa servname +which is defined only for certain +.Fa ai_socktype , +.Fn getaddrinfo +will fail because the arguments are not consistent. +For example, +.Fn getaddrinfo +will return an error if you ask for +.Dq Li tftp +service on +.Dv SOCK_STREAM . +.It +For internet address families, if you specify +.Fa servname +while you set +.Fa ai_socktype +to +.Dv SOCK_RAW , +.Fn getaddrinfo +will fail, because service names are not defined for the internet +.Dv SOCK_RAW +space. +.It +If you specify numeric +.Fa servname , +while leaving +.Fa ai_socktype +and +.Fa ai_protocol +unspecified, +.Fn getaddrinfo +will fail. +This is because the numeric +.Fa servname +does not identify any socket type, and +.Fn getaddrinfo +is not allowed to glob the argument in such case. +.El +.Pp +All of the information returned by +.Fn getaddrinfo +is dynamically allocated: +the +.Li addrinfo +structures, the socket address structures, and canonical node name +strings pointed to by the addrinfo structures. +To return this information to the system the function +.Fn freeaddrinfo +is called. +The +.Fa addrinfo +structure pointed to by the +.Fa ai argument +is freed, along with any dynamic storage pointed to by the structure. +This operation is repeated until a +.Dv NULL +.Fa ai_next +pointer is encountered. +.Pp +To aid applications in printing error messages based on the +.Dv EAI_xxx +codes returned by +.Fn getaddrinfo , +.Fn gai_strerror +is defined. +The argument is one of the +.Dv EAI_xxx +values defined earlier and the return value points to a string describing +the error. +If the argument is not one of the +.Dv EAI_xxx +values, the function still returns a pointer to a string whose contents +indicate an unknown error. +.\" +.Sh EXTENSIONS +This implementation supports numeric IPv6 address notation with the +experimental scope identifier. +By appending a percent sign and scope identifier to the address, you +can specify the value of the +.Li sin6_scope_id +field of the socket address. +This makes management of scoped address easier, +and allows cut-and-paste input of scoped addresses. +.Pp +At the moment the code supports only link-local addresses in this format. +The scope identifier is hardcoded to name of hardware interface associated +with the link, +(such as +.Li ne0 ) . +For example, +.Dq Li fe80::1%ne0 , +which means +.Do +.Li fe80::1 +on the link associated with the +.Li ne0 +interface +.Dc . +.Pp +This implementation is still very experimental and non-standard. +The current implementation assumes a one-to-one relationship between +interfaces and links, which is not necessarily true according to the +specification. +.\" +.Sh EXAMPLES +The following code tries to connect to +.Dq Li www.kame.net +service +.Dq Li http . +via stream socket. +It loops through all the addresses available, regardless of the address family. +If the destination resolves to an IPv4 address, it will use an +.Dv AF_INET +socket. +Similarly, if it resolves to IPv6, an +.Dv AF_INET6 +socket is used. +Observe that there is no hardcoded reference to particular address family. +The code works even if +.Fn getaddrinfo +returns addresses that are not IPv4/v6. +.Bd -literal -offset indent +struct addrinfo hints, *res, *res0; +int error; +int s; +const char *cause = NULL; + +memset(&hints, 0, sizeof(hints)); +hints.ai_family = PF_UNSPEC; +hints.ai_socktype = SOCK_STREAM; +error = getaddrinfo("www.kame.net", "http", &hints, &res0); +if (error) { + errx(1, "%s", gai_strerror(error)); + /*NOTREACHED*/ +} +s = -1; +cause = "no addresses"; +errno = EADDRNOTAVAIL; +for (res = res0; res; res = res->ai_next) { + s = socket(res->ai_family, res->ai_socktype, + res->ai_protocol); + if (s < 0) { + cause = "socket"; + continue; + } + + if (connect(s, res->ai_addr, res->ai_addrlen) < 0) { + cause = "connect"; + close(s); + s = -1; + continue; + } + + break; /* okay we got one */ +} +if (s < 0) { + err(1, cause); + /*NOTREACHED*/ +} +freeaddrinfo(res0); +.Ed +.Pp +The following example tries to open a wildcard listening socket onto service +.Dq Li http , +for all the address families available. +.Bd -literal -offset indent +struct addrinfo hints, *res, *res0; +int error; +int s[MAXSOCK]; +int nsock; +const char *cause = NULL; + +memset(&hints, 0, sizeof(hints)); +hints.ai_family = PF_UNSPEC; +hints.ai_socktype = SOCK_STREAM; +hints.ai_flags = AI_PASSIVE; +error = getaddrinfo(NULL, "http", &hints, &res0); +if (error) { + errx(1, "%s", gai_strerror(error)); + /*NOTREACHED*/ +} +nsock = 0; +for (res = res0; res && nsock < MAXSOCK; res = res->ai_next) { + s[nsock] = socket(res->ai_family, res->ai_socktype, + res->ai_protocol); + if (s[nsock] < 0) { + cause = "socket"; + continue; + } + + if (bind(s[nsock], res->ai_addr, res->ai_addrlen) < 0) { + cause = "bind"; + close(s[nsock]); + continue; + } + + if (listen(s[nsock], SOMAXCONN) < 0) { + cause = "listen"; + close(s[nsock]); + continue; + } + + nsock++; +} +if (nsock == 0) { + err(1, cause); + /*NOTREACHED*/ +} +freeaddrinfo(res0); +.Ed +.\" +.Sh FILES +.Bl -tag -width /etc/nsswitch.conf -compact +.It Pa /etc/hosts +.It Pa /etc/nsswitch.conf +.It Pa /etc/resolv.conf +.El +.\" +.Sh DIAGNOSTICS +Error return status from +.Fn getaddrinfo +is zero on success and non-zero on errors. +Non-zero error codes are defined in +.Aq Pa netdb.h , +and as follows: +.Pp +.Bl -tag -width EAI_ADDRFAMILY -compact +.It Dv EAI_ADDRFAMILY +Address family for +.Fa nodename +not supported. +.It Dv EAI_AGAIN +Temporary failure in name resolution. +.It Dv EAI_BADFLAGS +Invalid value for +.Fa ai_flags . +.It Dv EAI_FAIL +Non-recoverable failure in name resolution. +.It Dv EAI_FAMILY +.Fa ai_family +not supported. +.It Dv EAI_MEMORY +Memory allocation failure. +.It Dv EAI_NODATA +No address associated with +.Fa nodename . +.It Dv EAI_NONAME +.Fa nodename +nor +.Fa servname +provided, or not known. +.It Dv EAI_SERVICE +.Fa servname +not supported for +.Fa ai_socktype . +.It Dv EAI_SOCKTYPE +.Fa ai_socktype +not supported. +.It Dv EAI_SYSTEM +System error returned in +.Va errno . +.It Dv EAI_BADHINTS +Invalid value for +.Fa hints . +.It Dv EAI_PROTOCOL +Resolved protocol is unknown. +.It Dv EAI_MAX +Unknown error. +.El +.Pp +If called with an appropriate argument, +.Fn gai_strerror +returns a pointer to a string describing the given error code. +If the argument is not one of the +.Dv EAI_xxx +values, the function still returns a pointer to a string whose contents +indicate an unknown error. +.\" +.Sh SEE ALSO +.Xr gethostbyname 3 , +.Xr getnameinfo 3 , +.Xr getservbyname 3 , +.Xr hosts 5 , +.Xr resolv.conf 5 , +.Xr services 5 , +.Xr hostname 7 , +.Xr named 8 +.Pp +.Rs +.%A R. Gilligan +.%A S. Thomson +.%A J. Bound +.%A W. Stevens +.%T Basic Socket Interface Extensions for IPv6 +.%R RFC2553 +.%D March 1999 +.Re +.Rs +.%A Tatsuya Jinmei +.%A Atsushi Onoe +.%T "An Extension of Format for IPv6 Scoped Addresses" +.%R internet draft +.%N draft-ietf-ipngwg-scopedaddr-format-02.txt +.%O work in progress material +.Re +.Rs +.%A Craig Metz +.%T Protocol Independence Using the Sockets API +.%B "Proceedings of the freenix track: 2000 USENIX annual technical conference" +.%D June 2000 +.Re +.\" +.Sh HISTORY +The implementation first appeared in WIDE Hydrangea IPv6 protocol stack kit. +.\" +.Sh STANDARDS +The +.Fn getaddrinfo +function is defined in +.St -p1003.1g-2000 , +and documented in +.Dq Basic Socket Interface Extensions for IPv6 +(RFC2553). +.\" +.Sh BUGS +The current implementation is not thread-safe. +.Pp +The text was shamelessly copied from RFC2553. diff --git a/newlib/libc/sys/linux/net/getaddrinfo.c b/newlib/libc/sys/linux/net/getaddrinfo.c new file mode 100644 index 000000000..97ba36209 --- /dev/null +++ b/newlib/libc/sys/linux/net/getaddrinfo.c @@ -0,0 +1,1979 @@ +/* $KAME: getaddrinfo.c,v 1.15 2000/07/09 04:37:24 itojun Exp $ */ + +/* + * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * "#ifdef FAITH" part is local hack for supporting IPv4-v6 translator. + * + * Issues to be discussed: + * - Thread safe-ness must be checked. + * - Return values. There are nonstandard return values defined and used + * in the source code. This is because RFC2553 is silent about which error + * code must be returned for which situation. + * - freeaddrinfo(NULL). RFC2553 is silent about it. XNET 5.2 says it is + * invalid. + * current code - SEGV on freeaddrinfo(NULL) + * Note: + * - We use getipnodebyname() just for thread-safeness. There's no intent + * to let it do PF_UNSPEC (actually we never pass PF_UNSPEC to + * getipnodebyname(). + * - The code filters out AFs that are not supported by the kernel, + * when globbing NULL hostname (to loopback, or wildcard). Is it the right + * thing to do? What is the relationship with post-RFC2553 AI_ADDRCONFIG + * in ai_flags? + * - (post-2553) semantics of AI_ADDRCONFIG itself is too vague. + * (1) what should we do against numeric hostname (2) what should we do + * against NULL hostname (3) what is AI_ADDRCONFIG itself. AF not ready? + * non-loopback address configured? global address configured? + * - To avoid search order issue, we have a big amount of code duplicate + * from gethnamaddr.c and some other places. The issues that there's no + * lower layer function to lookup "IPv4 or IPv6" record. Calling + * gethostbyname2 from getaddrinfo will end up in wrong search order, as + * follows: + * - The code makes use of following calls when asked to resolver with + * ai_family = PF_UNSPEC: + * getipnodebyname(host, AF_INET6); + * getipnodebyname(host, AF_INET); + * This will result in the following queries if the node is configure to + * prefer /etc/hosts than DNS: + * lookup /etc/hosts for IPv6 address + * lookup DNS for IPv6 address + * lookup /etc/hosts for IPv4 address + * lookup DNS for IPv4 address + * which may not meet people's requirement. + * The right thing to happen is to have underlying layer which does + * PF_UNSPEC lookup (lookup both) and return chain of addrinfos. + * This would result in a bit of code duplicate with _dns_ghbyname() and + * friends. + */ +/* + * diffs with other KAME platforms: + * - other KAME platforms already nuked FAITH ($GAI), but as FreeBSD + * 4.0-RELEASE supplies it, we still have the code here. + * - AI_ADDRCONFIG support is supplied + * - some of FreeBSD style (#define tabify and others) + * - classful IPv4 numeric (127.1) is allowed. + */ + +#include <sys/cdefs.h> +#include <machine/endian.h> + +#include "namespace.h" +#include <sys/types.h> +#include <sys/types.h> +#include <sys/param.h> +#include <sys/socket.h> +#include <net/if.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> +#include <rpc/rpc.h> +#include <rpcsvc/yp_prot.h> +#include <rpcsvc/ypclnt.h> +#include <netdb.h> +#include <resolv.h> +#include <string.h> +#include <stdlib.h> +#include <stddef.h> +#include <ctype.h> +#include <unistd.h> +#include <stdio.h> +#include <errno.h> +#ifdef DEBUG +#include <syslog.h> +#endif + +#include <syslog.h> +#include <stdarg.h> +#include <nsswitch.h> +#include "un-namespace.h" + +#if defined(__KAME__) && defined(INET6) +# define FAITH +#endif + +#define SUCCESS 0 +#define ANY 0 +#define YES 1 +#define NO 0 + +static const char in_addrany[] = { 0, 0, 0, 0 }; +static const char in6_addrany[] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 +}; +static const char in_loopback[] = { 127, 0, 0, 1 }; +static const char in6_loopback[] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 +}; + +static const struct afd { + int a_af; + int a_addrlen; + int a_socklen; + int a_off; + const char *a_addrany; + const char *a_loopback; + int a_scoped; +} afdl [] = { +#ifdef INET6 +#define N_INET6 0 + {PF_INET6, sizeof(struct in6_addr), + sizeof(struct sockaddr_in6), + offsetof(struct sockaddr_in6, sin6_addr), + in6_addrany, in6_loopback, 1}, +#define N_INET 1 +#else +#define N_INET 0 +#endif + {PF_INET, sizeof(struct in_addr), + sizeof(struct sockaddr_in), + offsetof(struct sockaddr_in, sin_addr), + in_addrany, in_loopback, 0}, + {0, 0, 0, 0, NULL, NULL, 0}, +}; + +struct explore { + int e_af; + int e_socktype; + int e_protocol; + const char *e_protostr; + int e_wild; +#define WILD_AF(ex) ((ex)->e_wild & 0x01) +#define WILD_SOCKTYPE(ex) ((ex)->e_wild & 0x02) +#define WILD_PROTOCOL(ex) ((ex)->e_wild & 0x04) +}; + +static const struct explore explore[] = { +#if 0 + { PF_LOCAL, 0, ANY, ANY, NULL, 0x01 }, +#endif +#ifdef INET6 + { PF_INET6, SOCK_DGRAM, IPPROTO_UDP, "udp", 0x07 }, + { PF_INET6, SOCK_STREAM, IPPROTO_TCP, "tcp", 0x07 }, + { PF_INET6, SOCK_RAW, ANY, NULL, 0x05 }, +#endif + { PF_INET, SOCK_DGRAM, IPPROTO_UDP, "udp", 0x07 }, + { PF_INET, SOCK_STREAM, IPPROTO_TCP, "tcp", 0x07 }, + { PF_INET, SOCK_RAW, ANY, NULL, 0x05 }, + { PF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP, "udp", 0x07 }, + { PF_UNSPEC, SOCK_STREAM, IPPROTO_TCP, "tcp", 0x07 }, + { PF_UNSPEC, SOCK_RAW, ANY, NULL, 0x05 }, + { -1, 0, 0, NULL, 0 }, +}; + +#ifdef INET6 +#define PTON_MAX 16 +#else +#define PTON_MAX 4 +#endif + +static const ns_src default_dns_files[] = { + { NSSRC_FILES, NS_SUCCESS }, + { NSSRC_DNS, NS_SUCCESS }, + { 0 } +}; + +#if PACKETSZ > 1024 +#define MAXPACKET PACKETSZ +#else +#define MAXPACKET 1024 +#endif + +typedef union { + HEADER hdr; + u_char buf[MAXPACKET]; +} querybuf; + +struct res_target { + struct res_target *next; + const char *name; /* domain name */ + int qclass, qtype; /* class and type of query */ + u_char *answer; /* buffer to put answer */ + int anslen; /* size of answer buffer */ + int n; /* result length */ +}; + +static int str_isnumber(const char *); +static int explore_fqdn(const struct addrinfo *, const char *, + const char *, struct addrinfo **); +static int explore_null(const struct addrinfo *, + const char *, struct addrinfo **); +static int explore_numeric(const struct addrinfo *, const char *, + const char *, struct addrinfo **); +static int explore_numeric_scope(const struct addrinfo *, const char *, + const char *, struct addrinfo **); +static int get_canonname(const struct addrinfo *, + struct addrinfo *, const char *); +static struct addrinfo *get_ai(const struct addrinfo *, + const struct afd *, const char *); +static int get_portmatch(const struct addrinfo *, const char *); +static int get_port(struct addrinfo *, const char *, int); +static const struct afd *find_afd(int); +static int addrconfig(struct addrinfo *); +#ifdef INET6 +static int ip6_str2scopeid(char *, struct sockaddr_in6 *); +#endif + +static struct addrinfo *getanswer(const querybuf *, int, const char *, int, + const struct addrinfo *); +static int _dns_getaddrinfo(void *, void *, va_list); +static void _sethtent(void); +static void _endhtent(void); +static struct addrinfo *_gethtent(const char *, const struct addrinfo *); +static int _files_getaddrinfo(void *, void *, va_list); +#ifdef YP +static struct addrinfo *_yphostent(char *, const struct addrinfo *); +static int _yp_getaddrinfo(void *, void *, va_list); +extern int _yp_check(char **); +#endif + +u_int16_t _getshort(const u_char *src); + +static int res_queryN(const char *, struct res_target *); +static int res_searchN(const char *, struct res_target *); +static int res_querydomainN(const char *, const char *, + struct res_target *); + +static char *ai_errlist[] = { + "Success", + "Address family for hostname not supported", /* EAI_ADDRFAMILY */ + "Temporary failure in name resolution", /* EAI_AGAIN */ + "Invalid value for ai_flags", /* EAI_BADFLAGS */ + "Non-recoverable failure in name resolution", /* EAI_FAIL */ + "ai_family not supported", /* EAI_FAMILY */ + "Memory allocation failure", /* EAI_MEMORY */ + "No address associated with hostname", /* EAI_NODATA */ + "hostname nor servname provided, or not known", /* EAI_NONAME */ + "servname not supported for ai_socktype", /* EAI_SERVICE */ + "ai_socktype not supported", /* EAI_SOCKTYPE */ + "System error returned in errno", /* EAI_SYSTEM */ + "Invalid value for hints", /* EAI_BADHINTS */ + "Resolved protocol is unknown", /* EAI_PROTOCOL */ + "Unknown error", /* EAI_MAX */ +}; + +/* XXX macros that make external reference is BAD. */ + +#define GET_AI(ai, afd, addr) \ +do { \ + /* external reference: pai, error, and label free */ \ + (ai) = get_ai(pai, (afd), (addr)); \ + if ((ai) == NULL) { \ + error = EAI_MEMORY; \ + goto free; \ + } \ +} while (/*CONSTCOND*/0) + +#define GET_PORT(ai, serv) \ +do { \ + /* external reference: error and label free */ \ + error = get_port((ai), (serv), 0); \ + if (error != 0) \ + goto free; \ +} while (/*CONSTCOND*/0) + +#define GET_CANONNAME(ai, str) \ +do { \ + /* external reference: pai, error and label free */ \ + error = get_canonname(pai, (ai), (str)); \ + if (error != 0) \ + goto free; \ +} while (/*CONSTCOND*/0) + +#define ERR(err) \ +do { \ + /* external reference: error, and label bad */ \ + error = (err); \ + goto bad; \ + /*NOTREACHED*/ \ +} while (/*CONSTCOND*/0) + +#define MATCH_FAMILY(x, y, w) \ + ((x) == (y) || (/*CONSTCOND*/(w) && ((x) == PF_UNSPEC || (y) == PF_UNSPEC))) +#define MATCH(x, y, w) \ + ((x) == (y) || (/*CONSTCOND*/(w) && ((x) == ANY || (y) == ANY))) + +char * +gai_strerror(ecode) + int ecode; +{ + if (ecode < 0 || ecode > EAI_MAX) + ecode = EAI_MAX; + return ai_errlist[ecode]; +} + +void +freeaddrinfo(ai) + struct addrinfo *ai; +{ + struct addrinfo *next; + + do { + next = ai->ai_next; + if (ai->ai_canonname) + free(ai->ai_canonname); + /* no need to free(ai->ai_addr) */ + free(ai); + ai = next; + } while (ai); +} + +static int +str_isnumber(p) + const char *p; +{ + char *ep; + + if (*p == '\0') + return NO; + ep = NULL; + (void)strtoul(p, &ep, 10); + if (ep && *ep == '\0') + return YES; + else + return NO; +} + +int +getaddrinfo(hostname, servname, hints, res) + const char *hostname, *servname; + const struct addrinfo *hints; + struct addrinfo **res; +{ + struct addrinfo sentinel; + struct addrinfo *cur; + int error = 0; + struct addrinfo ai; + struct addrinfo ai0; + struct addrinfo *pai; + const struct explore *ex; + + memset(&sentinel, 0, sizeof(sentinel)); + cur = &sentinel; + pai = &ai; + pai->ai_flags = 0; + pai->ai_family = PF_UNSPEC; + pai->ai_socktype = ANY; + pai->ai_protocol = ANY; + pai->ai_addrlen = 0; + pai->ai_canonname = NULL; + pai->ai_addr = NULL; + pai->ai_next = NULL; + + if (hostname == NULL && servname == NULL) + return EAI_NONAME; + if (hints) { + /* error check for hints */ + if (hints->ai_addrlen || hints->ai_canonname || + hints->ai_addr || hints->ai_next) + ERR(EAI_BADHINTS); /* xxx */ + if (hints->ai_flags & ~AI_MASK) + ERR(EAI_BADFLAGS); + switch (hints->ai_family) { + case PF_UNSPEC: + case PF_INET: +#ifdef INET6 + case PF_INET6: +#endif + break; + default: + ERR(EAI_FAMILY); + } + memcpy(pai, hints, sizeof(*pai)); + + /* + * if both socktype/protocol are specified, check if they + * are meaningful combination. + */ + if (pai->ai_socktype != ANY && pai->ai_protocol != ANY) { + for (ex = explore; ex->e_af >= 0; ex++) { + if (pai->ai_family != ex->e_af) + continue; + if (ex->e_socktype == ANY) + continue; + if (ex->e_protocol == ANY) + continue; + if (pai->ai_socktype == ex->e_socktype + && pai->ai_protocol != ex->e_protocol) { + ERR(EAI_BADHINTS); + } + } + } + } + + /* + * post-2553: AI_ALL and AI_V4MAPPED are effective only against + * AF_INET6 query. They needs to be ignored if specified in other + * occassions. + */ + switch (pai->ai_flags & (AI_ALL | AI_V4MAPPED)) { + case AI_V4MAPPED: + case AI_ALL | AI_V4MAPPED: + if (pai->ai_family != AF_INET6) + pai->ai_flags &= ~(AI_ALL | AI_V4MAPPED); + break; + case AI_ALL: +#if 1 + /* illegal */ + ERR(EAI_BADFLAGS); +#else + pai->ai_flags &= ~(AI_ALL | AI_V4MAPPED); +#endif + break; + } + + /* + * check for special cases. (1) numeric servname is disallowed if + * socktype/protocol are left unspecified. (2) servname is disallowed + * for raw and other inet{,6} sockets. + */ + if (MATCH_FAMILY(pai->ai_family, PF_INET, 1) +#ifdef PF_INET6 + || MATCH_FAMILY(pai->ai_family, PF_INET6, 1) +#endif + ) { + ai0 = *pai; /* backup *pai */ + + if (pai->ai_family == PF_UNSPEC) { +#ifdef PF_INET6 + pai->ai_family = PF_INET6; +#else + pai->ai_family = PF_INET; +#endif + } + error = get_portmatch(pai, servname); + if (error) + ERR(error); + + *pai = ai0; + } + + ai0 = *pai; + + /* NULL hostname, or numeric hostname */ + for (ex = explore; ex->e_af >= 0; ex++) { + *pai = ai0; + + /* PF_UNSPEC entries are prepared for DNS queries only */ + if (ex->e_af == PF_UNSPEC) + continue; + + if (!MATCH_FAMILY(pai->ai_family, ex->e_af, WILD_AF(ex))) + continue; + if (!MATCH(pai->ai_socktype, ex->e_socktype, WILD_SOCKTYPE(ex))) + continue; + if (!MATCH(pai->ai_protocol, ex->e_protocol, WILD_PROTOCOL(ex))) + continue; + + if (pai->ai_family == PF_UNSPEC) + pai->ai_family = ex->e_af; + if (pai->ai_socktype == ANY && ex->e_socktype != ANY) + pai->ai_socktype = ex->e_socktype; + if (pai->ai_protocol == ANY && ex->e_protocol != ANY) + pai->ai_protocol = ex->e_protocol; + + if (hostname == NULL) + error = explore_null(pai, servname, &cur->ai_next); + else + error = explore_numeric_scope(pai, hostname, servname, &cur->ai_next); + + if (error) + goto free; + + while (cur && cur->ai_next) + cur = cur->ai_next; + } + + /* + * XXX + * If numreic representation of AF1 can be interpreted as FQDN + * representation of AF2, we need to think again about the code below. + */ + if (sentinel.ai_next) + goto good; + + if (pai->ai_flags & AI_NUMERICHOST) + ERR(EAI_NONAME); + if (hostname == NULL) + ERR(EAI_NODATA); + + if ((pai->ai_flags & AI_ADDRCONFIG) != 0 && !addrconfig(&ai0)) + ERR(EAI_FAIL); + + /* + * hostname as alphabetical name. + * we would like to prefer AF_INET6 than AF_INET, so we'll make a + * outer loop by AFs. + */ + for (ex = explore; ex->e_af >= 0; ex++) { + *pai = ai0; + + /* require exact match for family field */ + if (pai->ai_family != ex->e_af) + continue; + + if (!MATCH(pai->ai_socktype, ex->e_socktype, + WILD_SOCKTYPE(ex))) { + continue; + } + if (!MATCH(pai->ai_protocol, ex->e_protocol, + WILD_PROTOCOL(ex))) { + continue; + } + + if (pai->ai_socktype == ANY && ex->e_socktype != ANY) + pai->ai_socktype = ex->e_socktype; + if (pai->ai_protocol == ANY && ex->e_protocol != ANY) + pai->ai_protocol = ex->e_protocol; + + error = explore_fqdn(pai, hostname, servname, + &cur->ai_next); + + while (cur && cur->ai_next) + cur = cur->ai_next; + } + + /* XXX */ + if (sentinel.ai_next) + error = 0; + + if (error) + goto free; + if (error == 0) { + if (sentinel.ai_next) { + good: + *res = sentinel.ai_next; + return SUCCESS; + } else + error = EAI_FAIL; + } + free: + bad: + if (sentinel.ai_next) + freeaddrinfo(sentinel.ai_next); + *res = NULL; + return error; +} + +/* + * FQDN hostname, DNS lookup + */ +static int +explore_fqdn(pai, hostname, servname, res) + const struct addrinfo *pai; + const char *hostname; + const char *servname; + struct addrinfo **res; +{ + struct addrinfo *result; + struct addrinfo *cur; + int error = 0; + static const ns_dtab dtab[] = { + NS_FILES_CB(_files_getaddrinfo, NULL) + { NSSRC_DNS, _dns_getaddrinfo, NULL }, /* force -DHESIOD */ + NS_NIS_CB(_yp_getaddrinfo, NULL) + { 0 } + }; + + result = NULL; + + /* + * if the servname does not match socktype/protocol, ignore it. + */ + if (get_portmatch(pai, servname) != 0) + return 0; + + switch (nsdispatch(&result, dtab, NSDB_HOSTS, "getaddrinfo", + default_dns_files, hostname, pai)) { + case NS_TRYAGAIN: + error = EAI_AGAIN; + goto free; + case NS_UNAVAIL: + error = EAI_FAIL; + goto free; + case NS_NOTFOUND: + error = EAI_NODATA; + goto free; + case NS_SUCCESS: + error = 0; + for (cur = result; cur; cur = cur->ai_next) { + GET_PORT(cur, servname); + /* canonname should be filled already */ + } + break; + } + + *res = result; + + return 0; + +free: + if (result) + freeaddrinfo(result); + return error; +} + +/* + * hostname == NULL. + * passive socket -> anyaddr (0.0.0.0 or ::) + * non-passive socket -> localhost (127.0.0.1 or ::1) + */ +static int +explore_null(pai, servname, res) + const struct addrinfo *pai; + const char *servname; + struct addrinfo **res; +{ + int s; + const struct afd *afd; + struct addrinfo *cur; + struct addrinfo sentinel; + int error; + + *res = NULL; + sentinel.ai_next = NULL; + cur = &sentinel; + + /* + * filter out AFs that are not supported by the kernel + * XXX errno? + */ + s = socket(pai->ai_family, SOCK_DGRAM, 0); + if (s < 0) { + if (errno != EMFILE) + return 0; + } else + close(s); + + /* + * if the servname does not match socktype/protocol, ignore it. + */ + if (get_portmatch(pai, servname) != 0) + return 0; + + afd = find_afd(pai->ai_family); + if (afd == NULL) + return 0; + + if (pai->ai_flags & AI_PASSIVE) { + GET_AI(cur->ai_next, afd, afd->a_addrany); + /* xxx meaningless? + * GET_CANONNAME(cur->ai_next, "anyaddr"); + */ + GET_PORT(cur->ai_next, servname); + } else { + GET_AI(cur->ai_next, afd, afd->a_loopback); + /* xxx meaningless? + * GET_CANONNAME(cur->ai_next, "localhost"); + */ + GET_PORT(cur->ai_next, servname); + } + cur = cur->ai_next; + + *res = sentinel.ai_next; + return 0; + +free: + if (sentinel.ai_next) + freeaddrinfo(sentinel.ai_next); + return error; +} + +/* + * numeric hostname + */ +static int +explore_numeric(pai, hostname, servname, res) + const struct addrinfo *pai; + const char *hostname; + const char *servname; + struct addrinfo **res; +{ + const struct afd *afd; + struct addrinfo *cur; + struct addrinfo sentinel; + int error; + char pton[PTON_MAX]; + + *res = NULL; + sentinel.ai_next = NULL; + cur = &sentinel; + + /* + * if the servname does not match socktype/protocol, ignore it. + */ + if (get_portmatch(pai, servname) != 0) + return 0; + + afd = find_afd(pai->ai_family); + if (afd == NULL) + return 0; + + switch (afd->a_af) { +#if 1 /*X/Open spec*/ + case AF_INET: + if (inet_aton(hostname, (struct in_addr *)pton) == 1) { + if (pai->ai_family == afd->a_af || + pai->ai_family == PF_UNSPEC /*?*/) { + GET_AI(cur->ai_next, afd, pton); + GET_PORT(cur->ai_next, servname); + while (cur && cur->ai_next) + cur = cur->ai_next; + } else + ERR(EAI_FAMILY); /*xxx*/ + } + break; +#endif + default: + if (inet_pton(afd->a_af, hostname, pton) == 1) { + if (pai->ai_family == afd->a_af || + pai->ai_family == PF_UNSPEC /*?*/) { + GET_AI(cur->ai_next, afd, pton); + GET_PORT(cur->ai_next, servname); + while (cur && cur->ai_next) + cur = cur->ai_next; + } else + ERR(EAI_FAMILY); /*xxx*/ + } + break; + } + + *res = sentinel.ai_next; + return 0; + +free: +bad: + if (sentinel.ai_next) + freeaddrinfo(sentinel.ai_next); + return error; +} + +/* + * numeric hostname with scope + */ +static int +explore_numeric_scope(pai, hostname, servname, res) + const struct addrinfo *pai; + const char *hostname; + const char *servname; + struct addrinfo **res; +{ +#if !defined(SCOPE_DELIMITER) || !defined(INET6) + return explore_numeric(pai, hostname, servname, res); +#else + const struct afd *afd; + struct addrinfo *cur; + int error; + char *cp, *hostname2 = NULL, *scope, *addr; + struct sockaddr_in6 *sin6; + + /* + * if the servname does not match socktype/protocol, ignore it. + */ + if (get_portmatch(pai, servname) != 0) + return 0; + + afd = find_afd(pai->ai_family); + if (afd == NULL) + return 0; + + if (!afd->a_scoped) + return explore_numeric(pai, hostname, servname, res); + + cp = strchr(hostname, SCOPE_DELIMITER); + if (cp == NULL) + return explore_numeric(pai, hostname, servname, res); + + /* + * Handle special case of <scoped_address><delimiter><scope id> + */ + hostname2 = strdup(hostname); + if (hostname2 == NULL) + return EAI_MEMORY; + /* terminate at the delimiter */ + hostname2[cp - hostname] = '\0'; + addr = hostname2; + scope = cp + 1; + + error = explore_numeric(pai, addr, servname, res); + if (error == 0) { + int scopeid; + + for (cur = *res; cur; cur = cur->ai_next) { + if (cur->ai_family != AF_INET6) + continue; + sin6 = (struct sockaddr_in6 *)(void *)cur->ai_addr; + if ((scopeid = ip6_str2scopeid(scope, sin6)) == -1) { + free(hostname2); + return(EAI_NODATA); /* XXX: is return OK? */ + } + sin6->sin6_scope_id = scopeid; + } + } + + free(hostname2); + + return error; +#endif +} + +static int +get_canonname(pai, ai, str) + const struct addrinfo *pai; + struct addrinfo *ai; + const char *str; +{ + if ((pai->ai_flags & AI_CANONNAME) != 0) { + ai->ai_canonname = (char *)malloc(strlen(str) + 1); + if (ai->ai_canonname == NULL) + return EAI_MEMORY; + strcpy(ai->ai_canonname, str); + } + return 0; +} + +static struct addrinfo * +get_ai(pai, afd, addr) + const struct addrinfo *pai; + const struct afd *afd; + const char *addr; +{ + char *p; + struct addrinfo *ai; +#ifdef FAITH + struct in6_addr faith_prefix; + char *fp_str; + int translate = 0; +#endif + +#ifdef FAITH + /* + * Transfrom an IPv4 addr into a special IPv6 addr format for + * IPv6->IPv4 translation gateway. (only TCP is supported now) + * + * +-----------------------------------+------------+ + * | faith prefix part (12 bytes) | embedded | + * | | IPv4 addr part (4 bytes) + * +-----------------------------------+------------+ + * + * faith prefix part is specified as ascii IPv6 addr format + * in environmental variable GAI. + * For FAITH to work correctly, routing to faith prefix must be + * setup toward a machine where a FAITH daemon operates. + * Also, the machine must enable some mechanizm + * (e.g. faith interface hack) to divert those packet with + * faith prefixed destination addr to user-land FAITH daemon. + */ + fp_str = getenv("GAI"); + if (fp_str && inet_pton(AF_INET6, fp_str, &faith_prefix) == 1 && + afd->a_af == AF_INET && pai->ai_socktype == SOCK_STREAM) { + u_int32_t v4a; + u_int8_t v4a_top; + + memcpy(&v4a, addr, sizeof v4a); + v4a_top = v4a >> IN_CLASSA_NSHIFT; + if (!IN_MULTICAST(v4a) && !IN_EXPERIMENTAL(v4a) && + v4a_top != 0 && v4a != IN_LOOPBACKNET) { + afd = &afdl[N_INET6]; + memcpy(&faith_prefix.s6_addr[12], addr, + sizeof(struct in_addr)); + translate = 1; + } + } +#endif + + ai = (struct addrinfo *)malloc(sizeof(struct addrinfo) + + (afd->a_socklen)); + if (ai == NULL) + return NULL; + + memcpy(ai, pai, sizeof(struct addrinfo)); + ai->ai_addr = (struct sockaddr *)(void *)(ai + 1); + memset(ai->ai_addr, 0, (size_t)afd->a_socklen); + ai->ai_addrlen = afd->a_socklen; + ai->ai_addr->sa_family = ai->ai_family = afd->a_af; + p = (char *)(void *)(ai->ai_addr); +#ifdef FAITH + if (translate == 1) + memcpy(p + afd->a_off, &faith_prefix, (size_t)afd->a_addrlen); + else +#endif + memcpy(p + afd->a_off, addr, (size_t)afd->a_addrlen); + return ai; +} + +static int +get_portmatch(ai, servname) + const struct addrinfo *ai; + const char *servname; +{ + + /* get_port does not touch first argument. when matchonly == 1. */ + /* LINTED const cast */ + return get_port((struct addrinfo *)ai, servname, 1); +} + +static int +get_port(ai, servname, matchonly) + struct addrinfo *ai; + const char *servname; + int matchonly; +{ + const char *proto; + struct servent *sp; + int port; + int allownumeric; + + if (servname == NULL) + return 0; + switch (ai->ai_family) { + case AF_INET: +#ifdef AF_INET6 + case AF_INET6: +#endif + break; + default: + return 0; + } + + switch (ai->ai_socktype) { + case SOCK_RAW: + return EAI_SERVICE; + case SOCK_DGRAM: + case SOCK_STREAM: + allownumeric = 1; + break; + case ANY: + allownumeric = 0; + break; + default: + return EAI_SOCKTYPE; + } + + if (str_isnumber(servname)) { + if (!allownumeric) + return EAI_SERVICE; + port = htons(atoi(servname)); + if (port < 0 || port > 65535) + return EAI_SERVICE; + } else { + switch (ai->ai_socktype) { + case SOCK_DGRAM: + proto = "udp"; + break; + case SOCK_STREAM: + proto = "tcp"; + break; + default: + proto = NULL; + break; + } + + if ((sp = getservbyname(servname, proto)) == NULL) + return EAI_SERVICE; + port = sp->s_port; + } + + if (!matchonly) { + switch (ai->ai_family) { + case AF_INET: + ((struct sockaddr_in *)(void *) + ai->ai_addr)->sin_port = port; + break; +#ifdef INET6 + case AF_INET6: + ((struct sockaddr_in6 *)(void *) + ai->ai_addr)->sin6_port = port; + break; +#endif + } + } + + return 0; +} + +static const struct afd * +find_afd(af) + int af; +{ + const struct afd *afd; + + if (af == PF_UNSPEC) + return NULL; + for (afd = afdl; afd->a_af; afd++) { + if (afd->a_af == af) + return afd; + } + return NULL; +} + +/* + * post-2553: AI_ADDRCONFIG check. if we use getipnodeby* as backend, backend + * will take care of it. + * the semantics of AI_ADDRCONFIG is not defined well. we are not sure + * if the code is right or not. + * + * XXX PF_UNSPEC -> PF_INET6 + PF_INET mapping needs to be in sync with + * _dns_getaddrinfo. + */ +static int +addrconfig(pai) + struct addrinfo *pai; +{ + int s, af; + + /* + * TODO: + * Note that implementation dependent test for address + * configuration should be done everytime called + * (or apropriate interval), + * because addresses will be dynamically assigned or deleted. + */ + af = pai->ai_family; + if (af == AF_UNSPEC) { + if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) + af = AF_INET; + else { + close(s); + if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) + af = AF_INET6; + else + close(s); + } + } + if (af != AF_UNSPEC) { + if ((s = socket(af, SOCK_DGRAM, 0)) < 0) + return 0; + close(s); + } + pai->ai_family = af; + return 1; +} + +#ifdef INET6 +/* convert a string to a scope identifier. XXX: IPv6 specific */ +static int +ip6_str2scopeid(scope, sin6) + char *scope; + struct sockaddr_in6 *sin6; +{ + int scopeid; + struct in6_addr *a6 = &sin6->sin6_addr; + char *ep; + + /* empty scopeid portion is invalid */ + if (*scope == '\0') + return -1; + + if (IN6_IS_ADDR_LINKLOCAL(a6) || IN6_IS_ADDR_MC_LINKLOCAL(a6)) { + /* + * We currently assume a one-to-one mapping between links + * and interfaces, so we simply use interface indices for + * like-local scopes. + */ + scopeid = if_nametoindex(scope); + if (scopeid == 0) + goto trynumeric; + return(scopeid); + } + + /* still unclear about literal, allow numeric only - placeholder */ + if (IN6_IS_ADDR_SITELOCAL(a6) || IN6_IS_ADDR_MC_SITELOCAL(a6)) + goto trynumeric; + if (IN6_IS_ADDR_MC_ORGLOCAL(a6)) + goto trynumeric; + else + goto trynumeric; /* global */ + + /* try to convert to a numeric id as a last resort */ + trynumeric: + scopeid = (int)strtoul(scope, &ep, 10); + if (*ep == '\0') + return scopeid; + else + return -1; +} +#endif + +#ifdef DEBUG +static const char AskedForGot[] = + "gethostby*.getanswer: asked for \"%s\", got \"%s\""; +#endif +static FILE *hostf = NULL; + +static struct addrinfo * +getanswer(answer, anslen, qname, qtype, pai) + const querybuf *answer; + int anslen; + const char *qname; + int qtype; + const struct addrinfo *pai; +{ + struct addrinfo sentinel, *cur; + struct addrinfo ai; + const struct afd *afd; + char *canonname; + const HEADER *hp; + const u_char *cp; + int n; + const u_char *eom; + char *bp; + int type, class, buflen, ancount, qdcount; + int haveanswer, had_error; + char tbuf[MAXDNAME]; + int (*name_ok)(const char *); + char hostbuf[8*1024]; + + memset(&sentinel, 0, sizeof(sentinel)); + cur = &sentinel; + + canonname = NULL; + eom = answer->buf + anslen; + switch (qtype) { + case T_A: + case T_AAAA: + case T_ANY: /*use T_ANY only for T_A/T_AAAA lookup*/ + name_ok = res_hnok; + break; + default: + return (NULL); /* XXX should be abort(); */ + } + /* + * find first satisfactory answer + */ + hp = &answer->hdr; + ancount = ntohs(hp->ancount); + qdcount = ntohs(hp->qdcount); + bp = hostbuf; + buflen = sizeof hostbuf; + cp = answer->buf + HFIXEDSZ; + if (qdcount != 1) { + h_errno = NO_RECOVERY; + return (NULL); + } + n = dn_expand(answer->buf, eom, cp, bp, buflen); + if ((n < 0) || !(*name_ok)(bp)) { + h_errno = NO_RECOVERY; + return (NULL); + } + cp += n + QFIXEDSZ; + if (qtype == T_A || qtype == T_AAAA || qtype == T_ANY) { + /* res_send() has already verified that the query name is the + * same as the one we sent; this just gets the expanded name + * (i.e., with the succeeding search-domain tacked on). + */ + n = strlen(bp) + 1; /* for the \0 */ + if (n >= MAXHOSTNAMELEN) { + h_errno = NO_RECOVERY; + return (NULL); + } + canonname = bp; + bp += n; + buflen -= n; + /* The qname can be abbreviated, but h_name is now absolute. */ + qname = canonname; + } + haveanswer = 0; + had_error = 0; + while (ancount-- > 0 && cp < eom && !had_error) { + n = dn_expand(answer->buf, eom, cp, bp, buflen); + if ((n < 0) || !(*name_ok)(bp)) { + had_error++; + continue; + } + cp += n; /* name */ + type = _getshort(cp); + cp += INT16SZ; /* type */ + class = _getshort(cp); + cp += INT16SZ + INT32SZ; /* class, TTL */ + n = _getshort(cp); + cp += INT16SZ; /* len */ + if (class != C_IN) { + /* XXX - debug? syslog? */ + cp += n; + continue; /* XXX - had_error++ ? */ + } + if ((qtype == T_A || qtype == T_AAAA || qtype == T_ANY) && + type == T_CNAME) { + n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf); + if ((n < 0) || !(*name_ok)(tbuf)) { + had_error++; + continue; + } + cp += n; + /* Get canonical name. */ + n = strlen(tbuf) + 1; /* for the \0 */ + if (n > buflen || n >= MAXHOSTNAMELEN) { + had_error++; + continue; + } + strcpy(bp, tbuf); + canonname = bp; + bp += n; + buflen -= n; + continue; + } + if (qtype == T_ANY) { + if (!(type == T_A || type == T_AAAA)) { + cp += n; + continue; + } + } else if (type != qtype) { +#ifdef DEBUG + if (type != T_KEY && type != T_SIG) + syslog(LOG_NOTICE|LOG_AUTH, + "gethostby*.getanswer: asked for \"%s %s %s\", got type \"%s\"", + qname, p_class(C_IN), p_type(qtype), + p_type(type)); +#endif + cp += n; + continue; /* XXX - had_error++ ? */ + } + switch (type) { + case T_A: + case T_AAAA: + if (strcasecmp(canonname, bp) != 0) { +#ifdef DEBUG + syslog(LOG_NOTICE|LOG_AUTH, + AskedForGot, canonname, bp); +#endif + cp += n; + continue; /* XXX - had_error++ ? */ + } + if (type == T_A && n != INADDRSZ) { + cp += n; + continue; + } + if (type == T_AAAA && n != IN6ADDRSZ) { + cp += n; + continue; + } +#ifdef FILTER_V4MAPPED + if (type == T_AAAA) { + struct in6_addr in6; + memcpy(&in6, cp, sizeof(in6)); + if (IN6_IS_ADDR_V4MAPPED(&in6)) { + cp += n; + continue; + } + } +#endif + if (!haveanswer) { + int nn; + + canonname = bp; + nn = strlen(bp) + 1; /* for the \0 */ + bp += nn; + buflen -= nn; + } + + /* don't overwrite pai */ + ai = *pai; + ai.ai_family = (type == T_A) ? AF_INET : AF_INET6; + afd = find_afd(ai.ai_family); + if (afd == NULL) { + cp += n; + continue; + } + cur->ai_next = get_ai(&ai, afd, (const char *)cp); + if (cur->ai_next == NULL) + had_error++; + while (cur && cur->ai_next) + cur = cur->ai_next; + cp += n; + break; + default: + abort(); + } + if (!had_error) + haveanswer++; + } + if (haveanswer) { + if (!canonname) + (void)get_canonname(pai, sentinel.ai_next, qname); + else + (void)get_canonname(pai, sentinel.ai_next, canonname); + h_errno = NETDB_SUCCESS; + return sentinel.ai_next; + } + + h_errno = NO_RECOVERY; + return NULL; +} + +/*ARGSUSED*/ +static int +_dns_getaddrinfo(rv, cb_data, ap) + void *rv; + void *cb_data; + va_list ap; +{ + struct addrinfo *ai; + querybuf buf, buf2; + const char *name; + const struct addrinfo *pai; + struct addrinfo sentinel, *cur; + struct res_target q, q2; + + name = va_arg(ap, char *); + pai = va_arg(ap, const struct addrinfo *); + + memset(&q, 0, sizeof(q2)); + memset(&q2, 0, sizeof(q2)); + memset(&sentinel, 0, sizeof(sentinel)); + cur = &sentinel; + + switch (pai->ai_family) { + case AF_UNSPEC: + /* prefer IPv6 */ + q.qclass = C_IN; + q.qtype = T_AAAA; + q.answer = buf.buf; + q.anslen = sizeof(buf); + q.next = &q2; + q2.qclass = C_IN; + q2.qtype = T_A; + q2.answer = buf2.buf; + q2.anslen = sizeof(buf2); + break; + case AF_INET: + q.qclass = C_IN; + q.qtype = T_A; + q.answer = buf.buf; + q.anslen = sizeof(buf); + break; + case AF_INET6: + q.qclass = C_IN; + q.qtype = T_AAAA; + q.answer = buf.buf; + q.anslen = sizeof(buf); + break; + default: + return NS_UNAVAIL; + } + if (res_searchN(name, &q) < 0) + return NS_NOTFOUND; + ai = getanswer(&buf, q.n, q.name, q.qtype, pai); + if (ai) { + cur->ai_next = ai; + while (cur && cur->ai_next) + cur = cur->ai_next; + } + if (q.next) { + ai = getanswer(&buf2, q2.n, q2.name, q2.qtype, pai); + if (ai) + cur->ai_next = ai; + } + if (sentinel.ai_next == NULL) + switch (h_errno) { + case HOST_NOT_FOUND: + return NS_NOTFOUND; + case TRY_AGAIN: + return NS_TRYAGAIN; + default: + return NS_UNAVAIL; + } + *((struct addrinfo **)rv) = sentinel.ai_next; + return NS_SUCCESS; +} + +static void +_sethtent() +{ + if (!hostf) + hostf = fopen(_PATH_HOSTS, "r" ); + else + rewind(hostf); +} + +static void +_endhtent() +{ + if (hostf) { + (void) fclose(hostf); + hostf = NULL; + } +} + +static struct addrinfo * +_gethtent(name, pai) + const char *name; + const struct addrinfo *pai; +{ + char *p; + char *cp, *tname, *cname; + struct addrinfo hints, *res0, *res; + int error; + const char *addr; + char hostbuf[8*1024]; + + if (!hostf && !(hostf = fopen(_PATH_HOSTS, "r" ))) + return (NULL); + again: + if (!(p = fgets(hostbuf, sizeof hostbuf, hostf))) + return (NULL); + if (*p == '#') + goto again; + if (!(cp = strpbrk(p, "#\n"))) + goto again; + *cp = '\0'; + if (!(cp = strpbrk(p, " \t"))) + goto again; + *cp++ = '\0'; + addr = p; + cname = NULL; + /* if this is not something we're looking for, skip it. */ + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + tname = cp; + if (cname == NULL) + cname = cp; + if ((cp = strpbrk(cp, " \t")) != NULL) + *cp++ = '\0'; + if (strcasecmp(name, tname) == 0) + goto found; + } + goto again; + +found: + hints = *pai; + hints.ai_flags = AI_NUMERICHOST; + error = getaddrinfo(addr, NULL, &hints, &res0); + if (error) + goto again; +#ifdef FILTER_V4MAPPED + /* XXX should check all items in the chain */ + if (res0->ai_family == AF_INET6 && + IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)res0->ai_addr)->sin6_addr)) { + freeaddrinfo(res0); + goto again; + } +#endif + for (res = res0; res; res = res->ai_next) { + /* cover it up */ + res->ai_flags = pai->ai_flags; + + if (pai->ai_flags & AI_CANONNAME) { + if (get_canonname(pai, res, cname) != 0) { + freeaddrinfo(res0); + goto again; + } + } + } + return res0; +} + +/*ARGSUSED*/ +static int +_files_getaddrinfo(rv, cb_data, ap) + void *rv; + void *cb_data; + va_list ap; +{ + const char *name; + const struct addrinfo *pai; + struct addrinfo sentinel, *cur; + struct addrinfo *p; + + name = va_arg(ap, char *); + pai = va_arg(ap, struct addrinfo *); + + memset(&sentinel, 0, sizeof(sentinel)); + cur = &sentinel; + + _sethtent(); + while ((p = _gethtent(name, pai)) != NULL) { + cur->ai_next = p; + while (cur && cur->ai_next) + cur = cur->ai_next; + } + _endhtent(); + + *((struct addrinfo **)rv) = sentinel.ai_next; + if (sentinel.ai_next == NULL) + return NS_NOTFOUND; + return NS_SUCCESS; +} + +#ifdef YP +static char *__ypdomain; + +/*ARGSUSED*/ +static struct addrinfo * +_yphostent(line, pai) + char *line; + const struct addrinfo *pai; +{ + struct addrinfo sentinel, *cur; + struct addrinfo hints, *res, *res0; + int error; + char *p = line; + const char *addr, *canonname; + char *nextline; + char *cp; + + addr = canonname = NULL; + + memset(&sentinel, 0, sizeof(sentinel)); + cur = &sentinel; + +nextline: + /* terminate line */ + cp = strchr(p, '\n'); + if (cp) { + *cp++ = '\0'; + nextline = cp; + } else + nextline = NULL; + + cp = strpbrk(p, " \t"); + if (cp == NULL) { + if (canonname == NULL) + return (NULL); + else + goto done; + } + *cp++ = '\0'; + + addr = p; + + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (!canonname) + canonname = cp; + if ((cp = strpbrk(cp, " \t")) != NULL) + *cp++ = '\0'; + } + + hints = *pai; + hints.ai_flags = AI_NUMERICHOST; + error = getaddrinfo(addr, NULL, &hints, &res0); + if (error == 0) { + for (res = res0; res; res = res->ai_next) { + /* cover it up */ + res->ai_flags = pai->ai_flags; + + if (pai->ai_flags & AI_CANONNAME) + (void)get_canonname(pai, res, canonname); + } + } else + res0 = NULL; + if (res0) { + cur->ai_next = res0; + while (cur && cur->ai_next) + cur = cur->ai_next; + } + + if (nextline) { + p = nextline; + goto nextline; + } + +done: + return sentinel.ai_next; +} + +/*ARGSUSED*/ +static int +_yp_getaddrinfo(rv, cb_data, ap) + void *rv; + void *cb_data; + va_list ap; +{ + struct addrinfo sentinel, *cur; + struct addrinfo *ai = NULL; + static char *__ypcurrent; + int __ypcurrentlen, r; + const char *name; + const struct addrinfo *pai; + + name = va_arg(ap, char *); + pai = va_arg(ap, const struct addrinfo *); + + memset(&sentinel, 0, sizeof(sentinel)); + cur = &sentinel; + + if (!__ypdomain) { + if (_yp_check(&__ypdomain) == 0) + return NS_UNAVAIL; + } + if (__ypcurrent) + free(__ypcurrent); + __ypcurrent = NULL; + + /* hosts.byname is only for IPv4 (Solaris8) */ + if (pai->ai_family == PF_UNSPEC || pai->ai_family == PF_INET) { + r = yp_match(__ypdomain, "hosts.byname", name, + (int)strlen(name), &__ypcurrent, &__ypcurrentlen); + if (r == 0) { + struct addrinfo ai4; + + ai4 = *pai; + ai4.ai_family = AF_INET; + ai = _yphostent(__ypcurrent, &ai4); + if (ai) { + cur->ai_next = ai; + while (cur && cur->ai_next) + cur = cur->ai_next; + } + } + } + + /* ipnodes.byname can hold both IPv4/v6 */ + r = yp_match(__ypdomain, "ipnodes.byname", name, + (int)strlen(name), &__ypcurrent, &__ypcurrentlen); + if (r == 0) { + ai = _yphostent(__ypcurrent, pai); + if (ai) { + cur->ai_next = ai; + while (cur && cur->ai_next) + cur = cur->ai_next; + } + } + + if (sentinel.ai_next == NULL) { + h_errno = HOST_NOT_FOUND; + return NS_NOTFOUND; + } + *((struct addrinfo **)rv) = sentinel.ai_next; + return NS_SUCCESS; +} +#endif + +/* resolver logic */ + +extern const char *__hostalias(const char *); +extern int h_errno; + +/* + * Formulate a normal query, send, and await answer. + * Returned answer is placed in supplied buffer "answer". + * Perform preliminary check of answer, returning success only + * if no error is indicated and the answer count is nonzero. + * Return the size of the response on success, -1 on error. + * Error number is left in h_errno. + * + * Caller must parse answer and determine whether it answers the question. + */ +static int +res_queryN(name, target) + const char *name; /* domain name */ + struct res_target *target; +{ + u_char buf[MAXPACKET]; + HEADER *hp; + int n; + struct res_target *t; + int rcode; + int ancount; + + rcode = NOERROR; + ancount = 0; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + h_errno = NETDB_INTERNAL; + return (-1); + } + + for (t = target; t; t = t->next) { + int class, type; + u_char *answer; + int anslen; + + hp = (HEADER *)(void *)t->answer; + hp->rcode = NOERROR; /* default */ + + /* make it easier... */ + class = t->qclass; + type = t->qtype; + answer = t->answer; + anslen = t->anslen; +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf(";; res_query(%s, %d, %d)\n", name, class, type); +#endif + + n = res_mkquery(QUERY, name, class, type, NULL, 0, NULL, + buf, sizeof(buf)); + if (n > 0 && (_res.options & RES_USE_EDNS0) != 0) + n = res_opt(n, buf, sizeof(buf), anslen); + if (n <= 0) { +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf(";; res_query: mkquery failed\n"); +#endif + h_errno = NO_RECOVERY; + return (n); + } + n = res_send(buf, n, answer, anslen); +#if 0 + if (n < 0) { +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf(";; res_query: send error\n"); +#endif + h_errno = TRY_AGAIN; + return (n); + } +#endif + + if (n < 0 || hp->rcode != NOERROR || ntohs(hp->ancount) == 0) { + rcode = hp->rcode; /* record most recent error */ +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf(";; rcode = %d, ancount=%d\n", hp->rcode, + ntohs(hp->ancount)); +#endif + continue; + } + + ancount += ntohs(hp->ancount); + + t->n = n; + } + + if (ancount == 0) { + switch (rcode) { + case NXDOMAIN: + h_errno = HOST_NOT_FOUND; + break; + case SERVFAIL: + h_errno = TRY_AGAIN; + break; + case NOERROR: + h_errno = NO_DATA; + break; + case FORMERR: + case NOTIMP: + case REFUSED: + default: + h_errno = NO_RECOVERY; + break; + } + return (-1); + } + return (ancount); +} + +/* + * Formulate a normal query, send, and retrieve answer in supplied buffer. + * Return the size of the response on success, -1 on error. + * If enabled, implement search rules until answer or unrecoverable failure + * is detected. Error code, if any, is left in h_errno. + */ +static int +res_searchN(name, target) + const char *name; /* domain name */ + struct res_target *target; +{ + const char *cp, * const *domain; + HEADER *hp = (HEADER *)(void *)target->answer; /*XXX*/ + u_int dots; + int trailing_dot, ret, saved_herrno; + int got_nodata = 0, got_servfail = 0, tried_as_is = 0; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + h_errno = NETDB_INTERNAL; + return (-1); + } + + errno = 0; + h_errno = HOST_NOT_FOUND; /* default, if we never query */ + dots = 0; + for (cp = name; *cp; cp++) + dots += (*cp == '.'); + trailing_dot = 0; + if (cp > name && *--cp == '.') + trailing_dot++; + + /* + * if there aren't any dots, it could be a user-level alias + */ + if (!dots && (cp = __hostalias(name)) != NULL) + return (res_queryN(cp, target)); + + /* + * If there are dots in the name already, let's just give it a try + * 'as is'. The threshold can be set with the "ndots" option. + */ + saved_herrno = -1; + if (dots >= _res.ndots) { + ret = res_querydomainN(name, NULL, target); + if (ret > 0) + return (ret); + saved_herrno = h_errno; + tried_as_is++; + } + + /* + * We do at least one level of search if + * - there is no dot and RES_DEFNAME is set, or + * - there is at least one dot, there is no trailing dot, + * and RES_DNSRCH is set. + */ + if ((!dots && (_res.options & RES_DEFNAMES)) || + (dots && !trailing_dot && (_res.options & RES_DNSRCH))) { + int done = 0; + + for (domain = (const char * const *)_res.dnsrch; + *domain && !done; + domain++) { + + ret = res_querydomainN(name, *domain, target); + if (ret > 0) + return (ret); + + /* + * If no server present, give up. + * If name isn't found in this domain, + * keep trying higher domains in the search list + * (if that's enabled). + * On a NO_DATA error, keep trying, otherwise + * a wildcard entry of another type could keep us + * from finding this entry higher in the domain. + * If we get some other error (negative answer or + * server failure), then stop searching up, + * but try the input name below in case it's + * fully-qualified. + */ + if (errno == ECONNREFUSED) { + h_errno = TRY_AGAIN; + return (-1); + } + + switch (h_errno) { + case NO_DATA: + got_nodata++; + /* FALLTHROUGH */ + case HOST_NOT_FOUND: + /* keep trying */ + break; + case TRY_AGAIN: + if (hp->rcode == SERVFAIL) { + /* try next search element, if any */ + got_servfail++; + break; + } + /* FALLTHROUGH */ + default: + /* anything else implies that we're done */ + done++; + } + /* + * if we got here for some reason other than DNSRCH, + * we only wanted one iteration of the loop, so stop. + */ + if (!(_res.options & RES_DNSRCH)) + done++; + } + } + + /* + * if we have not already tried the name "as is", do that now. + * note that we do this regardless of how many dots were in the + * name or whether it ends with a dot. + */ + if (!tried_as_is && (dots || !(_res.options & RES_NOTLDQUERY))) { + ret = res_querydomainN(name, NULL, target); + if (ret > 0) + return (ret); + } + + /* + * if we got here, we didn't satisfy the search. + * if we did an initial full query, return that query's h_errno + * (note that we wouldn't be here if that query had succeeded). + * else if we ever got a nodata, send that back as the reason. + * else send back meaningless h_errno, that being the one from + * the last DNSRCH we did. + */ + if (saved_herrno != -1) + h_errno = saved_herrno; + else if (got_nodata) + h_errno = NO_DATA; + else if (got_servfail) + h_errno = TRY_AGAIN; + return (-1); +} + +/* + * Perform a call on res_query on the concatenation of name and domain, + * removing a trailing dot from name if domain is NULL. + */ +static int +res_querydomainN(name, domain, target) + const char *name, *domain; + struct res_target *target; +{ + char nbuf[MAXDNAME]; + const char *longname = nbuf; + size_t n, d; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + h_errno = NETDB_INTERNAL; + return (-1); + } +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf(";; res_querydomain(%s, %s)\n", + name, domain?domain:"<Nil>"); +#endif + if (domain == NULL) { + /* + * Check for trailing '.'; + * copy without '.' if present. + */ + n = strlen(name); + if (n >= MAXDNAME) { + h_errno = NO_RECOVERY; + return (-1); + } + if (n > 0 && name[--n] == '.') { + strncpy(nbuf, name, n); + nbuf[n] = '\0'; + } else + longname = name; + } else { + n = strlen(name); + d = strlen(domain); + if (n + d + 1 >= MAXDNAME) { + h_errno = NO_RECOVERY; + return (-1); + } + sprintf(nbuf, "%s.%s", name, domain); + } + return (res_queryN(longname, target)); +} diff --git a/newlib/libc/sys/linux/net/gethostbydns.c b/newlib/libc/sys/linux/net/gethostbydns.c new file mode 100644 index 000000000..9db8bf4ad --- /dev/null +++ b/newlib/libc/sys/linux/net/gethostbydns.c @@ -0,0 +1,815 @@ +/* + * ++Copyright++ 1985, 1988, 1993 + * - + * Copyright (c) 1985, 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * - + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + * - + * --Copyright-- + */ + + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)gethostnamadr.c 8.1 (Berkeley) 6/4/93"; +static char fromrcsid[] = "From: Id: gethnamaddr.c,v 8.23 1998/04/07 04:59:46 vixie Exp $"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> + +#include <sys/types.h> +#include <stdlib.h> +#include <sys/param.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> + +#include <stdio.h> +#include <unistd.h> +#include <string.h> +#include <netdb.h> +#include <resolv.h> +#include <ctype.h> +#include <errno.h> +#include <syslog.h> +#include <stdarg.h> +#include <nsswitch.h> + +#include "res_config.h" + +#define SPRINTF(x) ((size_t)sprintf x) + +static const char AskedForGot[] = + "gethostby*.gethostanswer: asked for \"%s\", got \"%s\""; + +#ifdef RESOLVSORT +static void addrsort(char **, int); +#endif + +u_int32_t _getlong(const u_char *src); +u_int16_t _getshort(const u_char *src); + +#ifdef DEBUG +static void dprintf(char *, int); +#endif + +#if PACKETSZ > 1024 +#define MAXPACKET PACKETSZ +#else +#define MAXPACKET 1024 +#endif + +typedef union { + HEADER hdr; + u_char buf[MAXPACKET]; +} querybuf; + +typedef union { + int32_t al; + char ac; +} align; + +extern int h_errno; +int _dns_ttl_; + +#ifdef DEBUG +static void +dprintf(msg, num) + char *msg; + int num; +{ + if (_res.options & RES_DEBUG) { + int save = errno; + + printf(msg, num); + errno = save; + } +} +#else +# define dprintf(msg, num) /*nada*/ +#endif + +#define BOUNDED_INCR(x) \ + do { \ + cp += x; \ + if (cp > eom) { \ + *herr = NO_RECOVERY; \ + return (NULL); \ + } \ + } while (0) + +#define BOUNDS_CHECK(ptr, count) \ + do { \ + if ((ptr) + (count) > eom) { \ + *herr = NO_RECOVERY; \ + return (NULL); \ + } \ + } while (0) + +static struct hostent * +gethostanswer(answer, anslen, qname, qtype, host, hostbuf, hostbuflen, herr) + const querybuf *answer; + int anslen; + const char *qname; + int qtype; + struct hostent *host; + char *hostbuf; + int hostbuflen; + int *herr; +{ + const HEADER *hp; + const u_char *cp; + int n; + const u_char *eom, *erdata; + char *bp, **ap, **hap; + int type, class, buflen, ancount, qdcount; + int haveanswer, had_error; + int toobig = 0; + char tbuf[MAXDNAME]; + const char *tname; + int (*name_ok)(const char *); + + tname = qname; + host->h_name = NULL; + eom = answer->buf + anslen; + switch (qtype) { + case T_A: + case T_AAAA: + name_ok = res_hnok; + break; + case T_PTR: + name_ok = res_dnok; + break; + default: + *herr = NO_RECOVERY; + return (NULL); /* XXX should be abort(); */ + } + /* + * find first satisfactory answer + */ + hp = &answer->hdr; + ancount = ntohs(hp->ancount); + qdcount = ntohs(hp->qdcount); + bp = hostbuf; + buflen = hostbuflen; + cp = answer->buf; + BOUNDED_INCR(HFIXEDSZ); + if (qdcount != 1) { + *herr = NO_RECOVERY; + return (NULL); + } + n = dn_expand(answer->buf, eom, cp, bp, buflen); + if ((n < 0) || !(*name_ok)(bp)) { + *herr = NO_RECOVERY; + return (NULL); + } + BOUNDED_INCR(n + QFIXEDSZ); + if (qtype == T_A || qtype == T_AAAA) { + /* res_send() has already verified that the query name is the + * same as the one we sent; this just gets the expanded name + * (i.e., with the succeeding search-domain tacked on). + */ + n = strlen(bp) + 1; /* for the \0 */ + if (n >= MAXHOSTNAMELEN) { + *herr = NO_RECOVERY; + return (NULL); + } + host->h_name = bp; + bp += n; + buflen -= n; + /* The qname can be abbreviated, but h_name is now absolute. */ + qname = host->h_name; + } + ap = host->__host_aliases; + *ap = NULL; + host->h_aliases = host->__host_aliases; + hap = host->__host_addrs; + *hap = NULL; + host->h_addr_list = host->__host_addrs; + haveanswer = 0; + had_error = 0; + _dns_ttl_ = -1; + while (ancount-- > 0 && cp < eom && !had_error) { + n = dn_expand(answer->buf, eom, cp, bp, buflen); + if ((n < 0) || !(*name_ok)(bp)) { + had_error++; + continue; + } + cp += n; /* name */ + BOUNDS_CHECK(cp, 3 * INT16SZ + INT32SZ); + type = _getshort(cp); + cp += INT16SZ; /* type */ + class = _getshort(cp); + cp += INT16SZ; /* class */ + if (qtype == T_A && type == T_A) + _dns_ttl_ = _getlong(cp); + cp += INT32SZ; /* TTL */ + n = _getshort(cp); + cp += INT16SZ; /* len */ + BOUNDS_CHECK(cp, n); + erdata = cp + n; + if (class != C_IN) { + /* XXX - debug? syslog? */ + cp += n; + continue; /* XXX - had_error++ ? */ + } + if ((qtype == T_A || qtype == T_AAAA) && type == T_CNAME) { + if (ap >= &host->__host_aliases[MAXALIASES-1]) + continue; + n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf); + if ((n < 0) || !(*name_ok)(tbuf)) { + had_error++; + continue; + } + cp += n; + if (cp != erdata) { + *herr = NO_RECOVERY; + return (NULL); + } + /* Store alias. */ + *ap++ = bp; + n = strlen(bp) + 1; /* for the \0 */ + if (n >= MAXHOSTNAMELEN) { + had_error++; + continue; + } + bp += n; + buflen -= n; + /* Get canonical name. */ + n = strlen(tbuf) + 1; /* for the \0 */ + if (n > buflen || n >= MAXHOSTNAMELEN) { + had_error++; + continue; + } + strcpy(bp, tbuf); + host->h_name = bp; + bp += n; + buflen -= n; + continue; + } + if (qtype == T_PTR && type == T_CNAME) { + n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf); + if (n < 0 || !res_dnok(tbuf)) { + had_error++; + continue; + } + cp += n; + if (cp != erdata) { + *herr = NO_RECOVERY; + return (NULL); + } + /* Get canonical name. */ + n = strlen(tbuf) + 1; /* for the \0 */ + if (n > buflen || n >= MAXHOSTNAMELEN) { + had_error++; + continue; + } + strcpy(bp, tbuf); + tname = bp; + bp += n; + buflen -= n; + continue; + } + if (type != qtype) { + if (type != T_SIG) + syslog(LOG_NOTICE|LOG_AUTH, + "gethostby*.gethostanswer: asked for \"%s %s %s\", got type \"%s\"", + qname, p_class(C_IN), p_type(qtype), + p_type(type)); + cp += n; + continue; /* XXX - had_error++ ? */ + } + switch (type) { + case T_PTR: + if (strcasecmp(tname, bp) != 0) { + syslog(LOG_NOTICE|LOG_AUTH, + AskedForGot, qname, bp); + cp += n; + continue; /* XXX - had_error++ ? */ + } + n = dn_expand(answer->buf, eom, cp, bp, buflen); + if ((n < 0) || !res_hnok(bp)) { + had_error++; + break; + } +#if MULTI_PTRS_ARE_ALIASES + cp += n; + if (cp != erdata) { + *herr = NO_RECOVERY; + return (NULL); + } + if (!haveanswer) + host->h_name = bp; + else if (ap < &host->__host_aliases[MAXALIASES-1]) + *ap++ = bp; + else + n = -1; + if (n != -1) { + n = strlen(bp) + 1; /* for the \0 */ + if (n >= MAXHOSTNAMELEN) { + had_error++; + break; + } + bp += n; + buflen -= n; + } + break; +#else + host->h_name = bp; + if (_res.options & RES_USE_INET6) { + n = strlen(bp) + 1; /* for the \0 */ + if (n >= MAXHOSTNAMELEN) { + had_error++; + break; + } + bp += n; + buflen -= n; + _map_v4v6_hostent(host, &bp, &buflen); + } + *herr = NETDB_SUCCESS; + return host; +#endif + case T_A: + case T_AAAA: + if (strcasecmp(host->h_name, bp) != 0) { + syslog(LOG_NOTICE|LOG_AUTH, + AskedForGot, host->h_name, bp); + cp += n; + continue; /* XXX - had_error++ ? */ + } + if (n != host->h_length) { + cp += n; + continue; + } + if (!haveanswer) { + int nn; + + host->h_name = bp; + nn = strlen(bp) + 1; /* for the \0 */ + bp += nn; + buflen -= nn; + } + + bp += sizeof(align) - ((u_long)bp % sizeof(align)); + + if (bp + n >= &hostbuf[hostbuflen]) { + dprintf("size (%d) too big\n", n); + had_error++; + continue; + } + if (hap >= &host->__host_addrs[MAXADDRS-1]) { + if (!toobig++) + dprintf("Too many addresses (%d)\n", + MAXADDRS); + cp += n; + continue; + } + bcopy(cp, *hap++ = bp, n); + bp += n; + buflen -= n; + cp += n; + if (cp != erdata) { + *herr = NO_RECOVERY; + return (NULL); + } + break; + default: + dprintf("Impossible condition (type=%d)\n", type); + *herr = NO_RECOVERY; + return (NULL); + /* BIND has abort() here, too risky on bad data */ + } + if (!had_error) + haveanswer++; + } + if (haveanswer) { + *ap = NULL; + *hap = NULL; +# if defined(RESOLVSORT) + /* + * Note: we sort even if host can take only one address + * in its return structures - should give it the "best" + * address in that case, not some random one + */ + if (_res.nsort && haveanswer > 1 && qtype == T_A) + addrsort(host->__host_addrs, haveanswer); +# endif /*RESOLVSORT*/ + if (!host->h_name) { + n = strlen(qname) + 1; /* for the \0 */ + if (n > buflen || n >= MAXHOSTNAMELEN) + goto no_recovery; + strcpy(bp, qname); + host->h_name = bp; + bp += n; + buflen -= n; + } + if (_res.options & RES_USE_INET6) + _map_v4v6_hostent(host, &bp, &buflen); + *herr = NETDB_SUCCESS; + return host; + } + no_recovery: + *herr = NO_RECOVERY; + return (NULL); +} + +struct hostent * +__dns_getanswer(answer, anslen, qname, qtype, host, hostbuf, hostbuflen, herr) + const char *answer; + int anslen; + const char *qname; + int qtype; + struct hostent *host; + char *hostbuf; + int hostbuflen; + int *herr; +{ + switch(qtype) { + case T_AAAA: + host->h_addrtype = AF_INET6; + host->h_length = IN6ADDRSZ; + break; + case T_A: + default: + host->h_addrtype = AF_INET; + host->h_length = INADDRSZ; + break; + } + + return(gethostanswer((const querybuf *)answer, anslen, qname, qtype, host, hostbuf, hostbuflen, herr)); +} + +int +_dns_gethostbyname(void *rval, void *cb_data, va_list ap) +{ + const char *name; + int af; + querybuf buf; + const char *cp; + char *bp; + int n, size, type, len; + struct hostent *resultbuf; + char *hostbuf; + int buflen; + int *herr; + + name = va_arg(ap, const char *); + af = va_arg(ap, int); + resultbuf = va_arg(ap, struct hostent *); + hostbuf = va_arg(ap, char *); + buflen = va_arg(ap, int); + herr = va_arg(ap, int *); + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + *herr = NETDB_INTERNAL; + return NS_UNAVAIL; + } + + switch (af) { + case AF_INET: + size = INADDRSZ; + type = T_A; + break; + case AF_INET6: + size = IN6ADDRSZ; + type = T_AAAA; + break; + default: + *herr = NETDB_INTERNAL; + errno = EAFNOSUPPORT; + return NS_UNAVAIL; + } + + resultbuf->h_addrtype = af; + resultbuf->h_length = size; + + /* + * if there aren't any dots, it could be a user-level alias. + * this is also done in res_query() since we are not the only + * function that looks up host names. + */ + if (!strchr(name, '.') && (cp = __hostalias(name))) + name = cp; + + /* + * disallow names consisting only of digits/dots, unless + * they end in a dot. + */ + if (isdigit((unsigned char)name[0])) + for (cp = name;; ++cp) { + if (!*cp) { + if (*--cp == '.') + break; + /* + * All-numeric, no dot at the end. + * Fake up a hostent as if we'd actually + * done a lookup. + */ + if (inet_pton(af, name, resultbuf->__host_addr) <= 0) { + *herr = HOST_NOT_FOUND; + return NS_NOTFOUND; + } + strncpy(hostbuf, name, MAXDNAME); + hostbuf[MAXDNAME] = '\0'; + bp = hostbuf + MAXDNAME; + len = buflen - MAXDNAME; + resultbuf->h_name = hostbuf; + resultbuf->h_aliases = resultbuf->__host_aliases; + resultbuf->__host_aliases[0] = NULL; + resultbuf->__host_addrs[0] = (char *)resultbuf->__host_addr; + resultbuf->__host_addrs[1] = NULL; + resultbuf->h_addr_list = resultbuf->__host_addrs; + if (_res.options & RES_USE_INET6) + _map_v4v6_hostent(resultbuf, &bp, &len); + *herr = NETDB_SUCCESS; + *(struct hostent **)rval = resultbuf; + return NS_SUCCESS; + } + if (!isdigit((unsigned char)*cp) && *cp != '.') + break; + } + if ((isxdigit((unsigned char)name[0]) && strchr(name, ':') != NULL) || + name[0] == ':') + for (cp = name;; ++cp) { + if (!*cp) { + if (*--cp == '.') + break; + /* + * All-IPv6-legal, no dot at the end. + * Fake up a hostent as if we'd actually + * done a lookup. + */ + if (inet_pton(af, name, resultbuf->__host_addr) <= 0) { + *herr = HOST_NOT_FOUND; + return NS_NOTFOUND; + } + strncpy(hostbuf, name, MAXDNAME); + hostbuf[MAXDNAME] = '\0'; + bp = hostbuf + MAXDNAME; + len = buflen - MAXDNAME; + resultbuf->h_name = hostbuf; + resultbuf->h_aliases = resultbuf->__host_aliases; + resultbuf->__host_aliases[0] = NULL; + resultbuf->__host_addrs[0] = (char *)resultbuf->__host_addr; + resultbuf->__host_addrs[1] = NULL; + resultbuf->h_addr_list = resultbuf->__host_addrs; + *herr = NETDB_SUCCESS; + *(struct hostent **)rval = resultbuf; + return NS_SUCCESS; + } + if (!isxdigit((unsigned char)*cp) && *cp != ':' && *cp != '.') + break; + } + + if ((n = res_search(name, C_IN, type, buf.buf, sizeof(buf))) < 0) { + dprintf("res_search failed (%d)\n", n); + return NS_UNAVAIL; + } + *(struct hostent **)rval = gethostanswer(&buf, n, name, type, resultbuf, hostbuf, buflen, herr); + return (*(struct hostent **)rval != NULL) ? NS_SUCCESS : NS_NOTFOUND; +} + +int +_dns_gethostbyaddr(void *rval, void *cb_data, va_list ap) +{ + const char *addr; /* XXX should have been def'd as u_char! */ + int len, af; + const u_char *uaddr; + static const u_char mapped[] = { 0,0, 0,0, 0,0, 0,0, 0,0, 0xff,0xff }; + static const u_char tunnelled[] = { 0,0, 0,0, 0,0, 0,0, 0,0, 0,0 }; + int n, size; + querybuf buf; + struct hostent *hp; + char qbuf[MAXDNAME+1], *qp; +#ifdef SUNSECURITY + struct hostent *rhp; + char **haddr; + u_long old_options; + char hname2[MAXDNAME+1]; +#endif /*SUNSECURITY*/ + struct hostent *resultbuf; + char *hostbuf; + int buflen; + int *herr; + + addr = va_arg(ap, const char *); + uaddr = (const u_char *)addr; + len = va_arg(ap, int); + af = va_arg(ap, int); + resultbuf = va_arg(ap, struct hostent *); + hostbuf = va_arg(ap, char *); + buflen = va_arg(ap, int); + herr = va_arg(ap, int *); + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + *herr = NETDB_INTERNAL; + return NS_UNAVAIL; + } + if (af == AF_INET6 && len == IN6ADDRSZ && + (!memcmp(uaddr, mapped, sizeof mapped) || + !memcmp(uaddr, tunnelled, sizeof tunnelled))) { + /* Unmap. */ + addr += sizeof mapped; + uaddr += sizeof mapped; + af = AF_INET; + len = INADDRSZ; + } + switch (af) { + case AF_INET: + size = INADDRSZ; + break; + case AF_INET6: + size = IN6ADDRSZ; + break; + default: + errno = EAFNOSUPPORT; + *herr = NETDB_INTERNAL; + return NS_UNAVAIL; + } + if (size != len) { + errno = EINVAL; + *herr = NETDB_INTERNAL; + return NS_UNAVAIL; + } + switch (af) { + case AF_INET: + (void) sprintf(qbuf, "%u.%u.%u.%u.in-addr.arpa", + (uaddr[3] & 0xff), + (uaddr[2] & 0xff), + (uaddr[1] & 0xff), + (uaddr[0] & 0xff)); + break; + case AF_INET6: + qp = qbuf; + for (n = IN6ADDRSZ - 1; n >= 0; n--) { + qp += SPRINTF((qp, "%x.%x.", + uaddr[n] & 0xf, + (uaddr[n] >> 4) & 0xf)); + } + strcpy(qp, "ip6.int"); + break; + default: + abort(); + } + n = res_query(qbuf, C_IN, T_PTR, (u_char *)buf.buf, sizeof buf.buf); + if (n < 0) { + dprintf("res_query failed (%d)\n", n); + return NS_UNAVAIL; + } + if (n > sizeof buf.buf) { + dprintf("static buffer is too small (%d)\n", n); + return NS_UNAVAIL; + } + if (!(hp = gethostanswer(&buf, n, qbuf, T_PTR, resultbuf, hostbuf, buflen, herr))) + return NS_NOTFOUND; /* *herr was set by gethostanswer() */ +#ifdef SUNSECURITY + if (af == AF_INET) { + /* + * turn off search as the name should be absolute, + * 'localhost' should be matched by defnames + */ + strncpy(hname2, hp->h_name, MAXDNAME); + hname2[MAXDNAME] = '\0'; + old_options = _res.options; + _res.options &= ~RES_DNSRCH; + _res.options |= RES_DEFNAMES; + if (!(rhp = gethostbyname(hname2))) { + syslog(LOG_NOTICE|LOG_AUTH, + "gethostbyaddr: No A record for %s (verifying [%s])", + hname2, inet_ntoa(*((struct in_addr *)addr))); + _res.options = old_options; + *herr = HOST_NOT_FOUND; + return NS_NOTFOUND; + } + _res.options = old_options; + for (haddr = rhp->h_addr_list; *haddr; haddr++) + if (!memcmp(*haddr, addr, INADDRSZ)) + break; + if (!*haddr) { + syslog(LOG_NOTICE|LOG_AUTH, + "gethostbyaddr: A record of %s != PTR record [%s]", + hname2, inet_ntoa(*((struct in_addr *)addr))); + *herr = HOST_NOT_FOUND; + return NS_NOTFOUND; + } + } +#endif /*SUNSECURITY*/ + hp->h_addrtype = af; + hp->h_length = len; + bcopy(addr, resultbuf->__host_addr, len); + resultbuf->__host_addrs[0] = (char *)resultbuf->__host_addr; + resultbuf->__host_addrs[1] = NULL; + if (af == AF_INET && (_res.options & RES_USE_INET6)) { + _map_v4v6_address((char*)resultbuf->__host_addr, (char*)resultbuf->__host_addr); + hp->h_addrtype = AF_INET6; + hp->h_length = IN6ADDRSZ; + } + *herr = NETDB_SUCCESS; + *(struct hostent **)rval = hp; + return (hp != NULL) ? NS_SUCCESS : NS_NOTFOUND; +} + +#ifdef RESOLVSORT +static void +addrsort(ap, num) + char **ap; + int num; +{ + int i, j; + char **p; + short aval[MAXADDRS]; + int needsort = 0; + + p = ap; + for (i = 0; i < num; i++, p++) { + for (j = 0 ; (unsigned)j < _res.nsort; j++) + if (_res.sort_list[j].addr.s_addr == + (((struct in_addr *)(*p))->s_addr & _res.sort_list[j].mask)) + break; + aval[i] = j; + if (needsort == 0 && i > 0 && j < aval[i-1]) + needsort = i; + } + if (!needsort) + return; + + while (needsort < num) { + for (j = needsort - 1; j >= 0; j--) { + if (aval[j] > aval[j+1]) { + char *hp; + + i = aval[j]; + aval[j] = aval[j+1]; + aval[j+1] = i; + + hp = ap[j]; + ap[j] = ap[j+1]; + ap[j+1] = hp; + + } else + break; + } + needsort++; + } +} +#endif +void +_sethostdnsent(stayopen) + int stayopen; +{ + if ((_res.options & RES_INIT) == 0 && res_init() == -1) + return; + if (stayopen) + _res.options |= RES_STAYOPEN | RES_USEVC; +} + +void +_endhostdnsent() +{ + _res.options &= ~(RES_STAYOPEN | RES_USEVC); + res_close(); +} diff --git a/newlib/libc/sys/linux/net/gethostbyht.c b/newlib/libc/sys/linux/net/gethostbyht.c new file mode 100644 index 000000000..4a15293dd --- /dev/null +++ b/newlib/libc/sys/linux/net/gethostbyht.c @@ -0,0 +1,285 @@ +/*- + * Copyright (c) 1985, 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * - + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + * - + * --Copyright-- + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)gethostnamadr.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/param.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <netdb.h> +#include <stdio.h> +#include <ctype.h> +#include <string.h> +#include <stdarg.h> +#include <nsswitch.h> +#include <arpa/nameser.h> /* XXX */ +#include <resolv.h> /* XXX */ +#include <dirent.h> +#include <stdlib.h> +#include <errno.h> + +static FILE *hostf = NULL; +static int stayopen = 0; +__LOCK_INIT(static, host_lock); + +void +_sethosthtent_r(int f, FILE **hostfile, int *hstayopen) +{ + if (!*hostfile) + *hostfile = fopen(_PATH_HOSTS, "r" ); + else + rewind(*hostfile); + *hstayopen = f; +} + +void +_endhosthtent_r(FILE **hostfile, int *hstayopen) +{ + if (*hostfile && !*hstayopen) { + (void) fclose(*hostfile); + *hostfile = NULL; + } +} + +void +_sethosthtent(f) + int f; +{ + _sethosthtent_r(f, &hostf, &stayopen); +} + +void +_endhosthtent() +{ + _endhosthtent_r(&hostf, &stayopen); +} + +struct hostent * +gethostent() +{ + static struct hostent hp; + static char buffer[BUFSIZ+1]; + static int len = BUFSIZ; + static int herr; + +#ifdef HAVE_DD_LOCK + __lock_acquire(host_lock); +#endif + gethostent_r(&hp, buffer, len, &herr, &hostf); +#ifdef HAVE_DD_LOCK + __lock_release(host_lock); +#endif + return &hp; +} + +int +gethostent_r(struct hostent *hp, char *buffer, int buflen, int *herr, FILE **hostfile) +{ + char *p; + char *cp, **q; + int af, len; + + if (!*hostfile && !(*hostfile = fopen(_PATH_HOSTS, "r" ))) { + *herr = NETDB_INTERNAL; + return -1; + } + again: + if (!(p = fgets(buffer, buflen, *hostfile))) { + *herr = HOST_NOT_FOUND; + return -1; + } + if (*p == '#') + goto again; + if (!(cp = strpbrk(p, "#\n"))) + goto again; + *cp = '\0'; + if (!(cp = strpbrk(p, " \t"))) + goto again; + *cp++ = '\0'; + + hp->h_addr_list = hp->__host_addrs; + hp->__host_addrs[0] = (char *)hp->__host_addr; + + if (inet_pton(AF_INET6, p, hp->h_addr_list[0]) > 0) { + af = AF_INET6; + len = IN6ADDRSZ; + } else if (inet_pton(AF_INET, p, hp->h_addr_list[0]) > 0) { + if (_res.options & RES_USE_INET6) { + _map_v4v6_address(hp->h_addr_list[0], hp->h_addr_list[0]); + af = AF_INET6; + len = IN6ADDRSZ; + } else { + af = AF_INET; + len = INADDRSZ; + } + } else { + goto again; + } + + + hp->h_addr_list[1] = NULL; + hp->h_addr = hp->__host_addrs[0]; + hp->h_length = len; + hp->h_addrtype = af; + + while (*cp == ' ' || *cp == '\t') + cp++; + hp->h_name = cp; + q = hp->h_aliases = hp->__host_aliases; + if ((cp = strpbrk(cp, " \t")) != NULL) + *cp++ = '\0'; + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (q < &hp->h_aliases[MAXALIASES - 1]) + *q++ = cp; + if ((cp = strpbrk(cp, " \t")) != NULL) + *cp++ = '\0'; + } + *q = NULL; + + *herr = NETDB_SUCCESS; + return 0; +} + +int +_ht_gethostbyname(void *rval, void *cb_data, va_list ap) +{ + char **cp; + const char *name; + int af; + struct hostent *resultbuf; + char *buf; + int buflen; + int *herr; + FILE *hostfile = NULL; + int stayopen; + int p; + + name = va_arg(ap, const char *); + af = va_arg(ap, int); + resultbuf = va_arg(ap, struct hostent *); + buf = va_arg(ap, char *); + buflen = va_arg(ap, int); + herr = va_arg(ap, int *); + + sethostent_r(0, &hostfile, &stayopen); + while ((p = gethostent_r(resultbuf, buf, buflen, herr, &hostfile)) != -1) { + if (resultbuf->h_addrtype != af) + continue; + if (strcasecmp(resultbuf->h_name, name) == 0) + break; + for (cp = resultbuf->h_aliases; *cp != 0; cp++) + if (strcasecmp(*cp, name) == 0) + goto found; + } +found: + endhostent_r(&hostfile, &stayopen); + + if (p == -1) + { + *(struct hostent **)rval = NULL; + return NS_NOTFOUND; + } + else + { + *(struct hostent **)rval = resultbuf; + return NS_SUCCESS; + } +} + +int +_ht_gethostbyaddr(void *rval, void *cb_data, va_list ap) +{ + const char *addr; + int len, af; + struct hostent *resultbuf; + char *buf; + int buflen; + int *herr; + FILE *hostfile = NULL; + int stayopen; + int p; + + addr = va_arg(ap, const char *); + len = va_arg(ap, int); + af = va_arg(ap, int); + resultbuf = va_arg(ap, struct hostent *); + buf = va_arg(ap, char *); + buflen = va_arg(ap, int); + herr = va_arg(ap, int *); + + sethostent_r(0, &hostfile, &stayopen); + while ((p = gethostent_r(resultbuf, buf, buflen, herr, &hostfile)) != -1) + if (resultbuf->h_addrtype == af && !memcmp(resultbuf->h_addr, addr, len)) + break; + endhostent_r(&hostfile, &stayopen); + + if (p == -1) + { + *(struct hostent **)rval = NULL; + return NS_NOTFOUND; + } + else + { + *(struct hostent **)rval = resultbuf; + return NS_SUCCESS; + } +} diff --git a/newlib/libc/sys/linux/net/gethostbyname.3 b/newlib/libc/sys/linux/net/gethostbyname.3 new file mode 100644 index 000000000..51ed2f864 --- /dev/null +++ b/newlib/libc/sys/linux/net/gethostbyname.3 @@ -0,0 +1,380 @@ +.\" Copyright (c) 1983, 1987, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" From: @(#)gethostbyname.3 8.4 (Berkeley) 5/25/95 +.\" $FreeBSD: src/lib/libc/net/gethostbyname.3,v 1.26 2002/01/14 16:59:00 ru Exp $ +.\" +.Dd May 25, 1995 +.Dt GETHOSTBYNAME 3 +.Os +.Sh NAME +.Nm gethostbyname , +.Nm gethostbyname2 , +.Nm gethostbyaddr , +.Nm gethostent , +.Nm sethostent , +.Nm endhostent , +.Nm herror , +.Nm hstrerror +.Nd get network host entry +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In netdb.h +.Vt extern int h_errno ; +.Ft struct hostent * +.Fn gethostbyname "const char *name" +.Ft struct hostent * +.Fn gethostbyname2 "const char *name" "int af" +.Ft struct hostent * +.Fn gethostbyaddr "const char *addr" "int len" "int type" +.Ft struct hostent * +.Fn gethostent void +.Ft void +.Fn sethostent "int stayopen" +.Ft void +.Fn endhostent void +.Ft void +.Fn herror "const char *string" +.Ft const char * +.Fn hstrerror "int err" +.Sh DESCRIPTION +.Bf -symbolic +The +.Xr getaddrinfo 3 +and +.Xr getnameinfo 3 +functions are preferred over the +.Fn gethostbyname , +.Fn gethostbyname2 , +and +.Fn gethostbyaddr +functions. +.Ef +.Pp +The +.Fn gethostbyname , +.Fn gethostbyname2 +and +.Fn gethostbyaddr +functions +each return a pointer to an object with the +following structure describing an internet host +referenced by name or by address, respectively. +.Pp +The +.Fa name +parameter passed to +.Fn gethostbyname +or +.Fn gethostbyname2 +should point to a +.Dv NUL Ns -terminated +hostname. +The +.Fa addr +parameter passed to +.Fn gethostbyaddr +should point to an address which is +.Fa len +bytes long, +in binary form +(i.e. not an IP address in human readable +.Tn ASCII +form). +The +.Fa type +parameter specifies the address family +(e.g.\& +.Dv AF_INET , AF_INET6 , +etc.) of this address. +.Pp +The structure returned contains either the information obtained from the name +server, +.Xr named 8 , +broken-out fields from a line in +.Pa /etc/hosts , +or database entries supplied by the +.Xr yp 8 +system. +The order of the lookups is controlled by the +.Sq hosts +entry in +.Xr nsswitch.conf 5 . +.Bd -literal +struct hostent { + char *h_name; /* official name of host */ + char **h_aliases; /* alias list */ + int h_addrtype; /* host address type */ + int h_length; /* length of address */ + char **h_addr_list; /* list of addresses from name server */ +}; +#define h_addr h_addr_list[0] /* address, for backward compatibility */ +.Ed +.Pp +The members of this structure are: +.Bl -tag -width h_addr_list +.It Va h_name +Official name of the host. +.It Va h_aliases +A +.Dv NULL Ns -terminated +array of alternate names for the host. +.It Va h_addrtype +The type of address being returned; usually +.Dv AF_INET . +.It Va h_length +The length, in bytes, of the address. +.It Va h_addr_list +A +.Dv NULL Ns -terminated +array of network addresses for the host. +Host addresses are returned in network byte order. +.It Va h_addr +The first address in +.Va h_addr_list ; +this is for backward compatibility. +.El +.Pp +When using the nameserver, +.Fn gethostbyname +and +.Fn gethostbyname2 +will search for the named host in the current domain and its parents +unless the name ends in a dot. +If the name contains no dot, and if the environment variable +.Dq Ev HOSTALIASES +contains the name of an alias file, the alias file will first be searched +for an alias matching the input name. +See +.Xr hostname 7 +for the domain search procedure and the alias file format. +.Pp +The +.Fn gethostbyname2 +function is an evolution of +.Fn gethostbyname +which is intended to allow lookups in address families other than +.Dv AF_INET , +for example +.Dv AF_INET6 . +.Pp +The +.Fn sethostent +function +may be used to request the use of a connected +.Tn TCP +socket for queries. +If the +.Fa stayopen +flag is non-zero, +this sets the option to send all queries to the name server using +.Tn TCP +and to retain the connection after each call to +.Fn gethostbyname , +.Fn gethostbyname2 +or +.Fn gethostbyaddr . +Otherwise, queries are performed using +.Tn UDP +datagrams. +.Pp +The +.Fn endhostent +function +closes the +.Tn TCP +connection. +.Pp +The +.Fn herror +function writes a message to the diagnostic output consisting of the +string parameter +.Fa s , +the constant string +.Qq Li ":\ " , +and a message corresponding to the value of +.Va h_errno . +.Pp +The +.Fn hstrerror +function returns a string which is the message text corresponding to the +value of the +.Fa err +parameter. +.Sh FILES +.Bl -tag -width /etc/nsswitch.conf -compact +.It Pa /etc/hosts +.It Pa /etc/nsswitch.conf +.It Pa /etc/resolv.conf +.El +.Sh EXAMPLES +Print out the hostname associated with a specific IP address: +.Bd -literal -offset indent +const char *ipstr = "127.0.0.1"; +struct in_addr ip; +struct hostent *hp; + +if (!inet_aton(ipstr, &ip)) + errx(1, "can't parse IP address %s", ipstr); + +if ((hp = gethostbyaddr((const char *)&ip, + sizeof ip, AF_INET)) == NULL) + errx(1, "no name associated with %s", ipstr); + +printf("name associated with %s is %s\en", ipstr, hp->h_name); +.Ed +.Sh DIAGNOSTICS +Error return status from +.Fn gethostbyname , +.Fn gethostbyname2 +and +.Fn gethostbyaddr +is indicated by return of a +.Dv NULL +pointer. +The external integer +.Va h_errno +may then be checked to see whether this is a temporary failure +or an invalid or unknown host. +The routine +.Fn herror +can be used to print an error message describing the failure. +If its argument +.Fa string +is +.Pf non- Dv NULL , +it is printed, followed by a colon and a space. +The error message is printed with a trailing newline. +.Pp +The variable +.Va h_errno +can have the following values: +.Bl -tag -width HOST_NOT_FOUND +.It Dv HOST_NOT_FOUND +No such host is known. +.It Dv TRY_AGAIN +This is usually a temporary error +and means that the local server did not receive +a response from an authoritative server. +A retry at some later time may succeed. +.It Dv NO_RECOVERY +Some unexpected server failure was encountered. +This is a non-recoverable error. +.It Dv NO_DATA +The requested name is valid but does not have an IP address; +this is not a temporary error. +This means that the name is known to the name server but there is no address +associated with this name. +Another type of request to the name server using this domain name +will result in an answer; +for example, a mail-forwarder may be registered for this domain. +.El +.Sh SEE ALSO +.Xr getaddrinfo 3 , +.Xr getnameinfo 3 , +.Xr inet_aton 3 , +.Xr resolver 3 , +.Xr hosts 5 , +.Xr hostname 7 , +.Xr named 8 +.Sh CAVEAT +The +.Fn gethostent +function +is defined, and +.Fn sethostent +and +.Fn endhostent +are redefined, +when +.Xr libc 3 +is built to use only the routines to lookup in +.Pa /etc/hosts +and not the name server. +.Pp +The +.Fn gethostent +function +reads the next line of +.Pa /etc/hosts , +opening the file if necessary. +.Pp +The +.Fn sethostent +function +opens and/or rewinds the file +.Pa /etc/hosts . +If the +.Fa stayopen +argument is non-zero, +the file will not be closed after each call to +.Fn gethostbyname , +.Fn gethostbyname2 +or +.Fn gethostbyaddr . +.Pp +The +.Fn endhostent +function +closes the file. +.Sh HISTORY +The +.Fn herror +function appeared in +.Bx 4.3 . +The +.Fn endhostent , +.Fn gethostbyaddr , +.Fn gethostbyname , +.Fn gethostent , +and +.Fn sethostent +functions appeared in +.Bx 4.2 . +The +.Fn gethostbyname2 +function first appeared in +.Tn BIND +version 4.9.4. +.Sh BUGS +These functions use static data storage; +if the data is needed for future use, it should be +copied before any subsequent calls overwrite it. +Only the Internet +address format is currently understood. +.Pp +.Fn gethostbyname2 +cannot perform +.Dv AF_INET6 +lookups over NIS. +.Xr getaddrinfo 3 +must be used instead. diff --git a/newlib/libc/sys/linux/net/gethostbynis.c b/newlib/libc/sys/linux/net/gethostbynis.c new file mode 100644 index 000000000..917e9409d --- /dev/null +++ b/newlib/libc/sys/linux/net/gethostbynis.c @@ -0,0 +1,281 @@ +/*- + * Copyright (c) 1994, Garrett Wollman + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> +#include <sys/types.h> + +#include <sys/param.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> +#include <netdb.h> +#include <stdio.h> +#include <stdlib.h> +#include <ctype.h> +#include <errno.h> +#include <string.h> +#include <stdarg.h> +#include <nsswitch.h> +#ifdef YP +#include <rpc/rpc.h> +#include <rpcsvc/yp_prot.h> +#include <rpcsvc/ypclnt.h> +#endif + +#ifdef YP +static char *host_aliases[MAXALIASES]; +static char hostaddr[MAXADDRS]; +static char *host_addrs[2]; + +static struct hostent * +_gethostbynis(name, map, af) + const char *name; + char *map; + int af; +{ + char *cp, **q; + char *result; + int resultlen,size; + static struct hostent h; + static char *domain = (char *)NULL; + static char ypbuf[YPMAXRECORD + 2]; + + switch(af) { + case AF_INET: + size = NS_INADDRSZ; + break; + default: + case AF_INET6: + size = NS_IN6ADDRSZ; + errno = EAFNOSUPPORT; + h_errno = NETDB_INTERNAL; + return NULL; + } + + if (domain == (char *)NULL) + if (yp_get_default_domain (&domain)) { + h_errno = NETDB_INTERNAL; + return ((struct hostent *)NULL); + } + + if (yp_match(domain, map, name, strlen(name), &result, &resultlen)) { + h_errno = HOST_NOT_FOUND; + return ((struct hostent *)NULL); + } + + /* avoid potential memory leak */ + bcopy((char *)result, (char *)&ypbuf, resultlen); + ypbuf[resultlen] = '\0'; + free(result); + result = (char *)&ypbuf; + + if ((cp = index(result, '\n'))) + *cp = '\0'; + + cp = strpbrk(result, " \t"); + *cp++ = '\0'; + h.h_addr_list = host_addrs; + h.h_addr = hostaddr; + *((u_long *)h.h_addr) = inet_addr(result); + h.h_length = size; + h.h_addrtype = AF_INET; + while (*cp == ' ' || *cp == '\t') + cp++; + h.h_name = cp; + q = h.h_aliases = host_aliases; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (q < &host_aliases[MAXALIASES - 1]) + *q++ = cp; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + } + *q = NULL; + return (&h); +} + +static struct hostent * +_gethostbynis_r(name, map, af, hp, buffer, buflen, herr) + const char *name; + char *map; + int af; + struct hostent *hp; + char *buffer; + int buflen; + int *herr; +{ + char *cp, **q; + char *result; + int resultlen,size; + char *domain = (char *)NULL; + + switch(af) { + case AF_INET: + size = NS_INADDRSZ; + break; + default: + case AF_INET6: + size = NS_IN6ADDRSZ; + errno = EAFNOSUPPORT; + *herr = NETDB_INTERNAL; + return NULL; + } + + if (domain == (char *)NULL) + if (yp_get_default_domain (&domain)) { + *herr = NETDB_INTERNAL; + return ((struct hostent *)NULL); + } + + if (yp_match(domain, map, name, strlen(name), &result, &resultlen)) { + *herr = HOST_NOT_FOUND; + return ((struct hostent *)NULL); + } + + /* avoid potential memory leak */ + bcopy((char *)result, buffer, resultlen); + buffer[resultlen] = '\0'; + free(result); + result = buffer; + + if ((cp = index(result, '\n'))) + *cp = '\0'; + + cp = strpbrk(result, " \t"); + *cp++ = '\0'; + *((u_long *)hp->__host_addrs[0]) = inet_addr(result); + hp->__host_addrs[1] = NULL; + hp->h_addr_list = hp->__host_addrs; + hp->h_addr = hp->__host_addrs[0]; + hp->h_length = size; + hp->h_addrtype = AF_INET; + while (*cp == ' ' || *cp == '\t') + cp++; + hp->h_name = cp; + q = hp->__host_aliases; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (q < &hp->__host_aliases[MAXALIASES - 1]) + *q++ = cp; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + } + hp->h_aliases = hp->__host_aliases; + *q = NULL; + return (&hp); +} +#endif /* YP */ + +/* XXX _gethostbynisname/_gethostbynisaddr only used by getaddrinfo */ +struct hostent * +_gethostbynisname(const char *name, int af) +{ +#ifdef YP + return _gethostbynis(name, "hosts.byname", af); +#else + return NULL; +#endif +} + +struct hostent * +_gethostbynisaddr(const char *addr, int len, int af) +{ +#ifdef YP + return _gethostbynis(inet_ntoa(*(struct in_addr *)addr), + "hosts.byaddr", af); +#else + return NULL; +#endif +} + + +int +_nis_gethostbyname(void *rval, void *cb_data, va_list ap) +{ +#ifdef YP + const char *name; + int af; + struct hostent *resultbuf; + char *buf; + int buflen; + int *herr; + + name = va_arg(ap, const char *); + af = va_arg(ap, int); + resultbuf = va_arg(ap, struct hostent *); + buf = va_arg(ap, char *); + buflen = va_arg(ap, int); + herr = va_arg(ap, int *); + + *(struct hostent **)rval = _gethostbynis_r(name, "hosts.byname", af, resultbuf, buf, buflen, herr); + + return (*(struct hostent **)rval != NULL) ? NS_SUCCESS : NS_NOTFOUND; +#else + return NS_UNAVAIL; +#endif +} + +int +_nis_gethostbyaddr(void *rval, void *cb_data, va_list ap) +{ +#ifdef YP + const char *addr; + int len; + int af; + struct hostent *resultbuf; + char *buf; + int buflen; + int *herr; + + addr = va_arg(ap, const char *); + len = va_arg(ap, int); + af = va_arg(ap, int); + resultbuf = va_arg(ap, struct hostent *); + buf = va_arg(ap, char *); + buflen = va_arg(ap, int); + herr = va_arg(ap, int *); + + *(struct hostent **)rval = _gethostbynis_r(inet_ntoa(*(struct in_addr *)addr),"hosts.byaddr", af); + return (*(struct hostent **)rval != NULL) ? NS_SUCCESS : NS_NOTFOUND; +#else + return NS_UNAVAIL; +#endif +} diff --git a/newlib/libc/sys/linux/net/gethostnamadr.c b/newlib/libc/sys/linux/net/gethostnamadr.c new file mode 100644 index 000000000..de1efd8ed --- /dev/null +++ b/newlib/libc/sys/linux/net/gethostnamadr.c @@ -0,0 +1,221 @@ +/*- + * Copyright (c) 1994, Garrett Wollman + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> +#include <sys/types.h> + +#include <sys/param.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <netdb.h> +#include <stdio.h> +#include <ctype.h> +#include <string.h> +#include <stdarg.h> +#include <nsswitch.h> +#include <arpa/nameser.h> /* XXX hack for _res */ +#include <resolv.h> /* XXX hack for _res */ +#include <dirent.h> + +extern int _ht_gethostbyname(void *, void *, va_list); +extern int _dns_gethostbyname(void *, void *, va_list); +extern int _nis_gethostbyname(void *, void *, va_list); +extern int _ht_gethostbyaddr(void *, void *, va_list); +extern int _dns_gethostbyaddr(void *, void *, va_list); +extern int _nis_gethostbyaddr(void *, void *, va_list); + +/* Host lookup order if nsswitch.conf is broken or nonexistant */ +static const ns_src default_src[] = { + { NSSRC_FILES, NS_SUCCESS }, + { NSSRC_DNS, NS_SUCCESS }, + { 0 } +}; + +__LOCK_INIT(static, name_lock); +__LOCK_INIT(static, addr_lock); + +struct hostent * +gethostbyname(const char *name) +{ + struct hostent *hp = NULL; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + h_errno = NETDB_INTERNAL; + return (NULL); + } + if (_res.options & RES_USE_INET6) { /* XXX */ + hp = gethostbyname2(name, AF_INET6); /* XXX */ + if (hp) /* XXX */ + return (hp); /* XXX */ + } /* XXX */ + return (gethostbyname2(name, AF_INET)); +} + +struct hostent * +gethostbyname2(const char *name, int type) +{ + static struct hostent host, *hp; + static char hostbuf[BUFSIZ]; + static int herr; + int rval; + + static const ns_dtab dtab[] = { + NS_FILES_CB(_ht_gethostbyname, NULL) + { NSSRC_DNS, _dns_gethostbyname, NULL }, + NS_NIS_CB(_nis_gethostbyname, NULL) /* force -DHESIOD */ + { 0 } + }; + +#ifdef HAVE_DD_LOCK + __lock_acquire(name_lock); +#endif + rval = nsdispatch((void *)&hp, dtab, NSDB_HOSTS, "gethostbyname", + default_src, name, type, &host, hostbuf, BUFSIZ, &herr); + +#ifdef HAVE_DD_LOCK + __lock_release(name_lock); +#endif + if (rval != NS_SUCCESS) + return NULL; + else + return hp; +} + +int +__gethostbyname_r(const char *name, struct hostent *result, + void *buffer, int buflen, struct hostent **hp, int *herr) +{ + int rval; + int type; + + static const ns_dtab dtab[] = { + NS_FILES_CB(_ht_gethostbyname, NULL) + { NSSRC_DNS, _dns_gethostbyname, NULL }, + NS_NIS_CB(_nis_gethostbyname, NULL) /* force -DHESIOD */ + { 0 } + }; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + h_errno = NETDB_INTERNAL; + return HOST_NOT_FOUND; + } + + if (_res.options & RES_USE_INET6) + type = AF_INET6; + else + type = AF_INET; + + rval = nsdispatch((void *)hp, dtab, NSDB_HOSTS, "gethostbyname", + default_src, name, type, result, buffer, buflen, herr); + + if (rval != NS_SUCCESS) + return rval; + else + return 0; +} + +struct hostent * +gethostbyaddr(const char *addr, int len, int type) +{ + static struct hostent host, *hp; + static char hostbuf[BUFSIZ]; + static int herr; + int rval; + + static const ns_dtab dtab[] = { + NS_FILES_CB(_ht_gethostbyaddr, NULL) + { NSSRC_DNS, _dns_gethostbyaddr, NULL }, + NS_NIS_CB(_nis_gethostbyaddr, NULL) /* force -DHESIOD */ + { 0 } + }; + +#ifdef HAVE_DD_LOCK + __lock_acquire(addr_lock); +#endif + rval = nsdispatch((void *)&hp, dtab, NSDB_HOSTS, "gethostbyaddr", + default_src, addr, len, type, &host, hostbuf, BUFSIZ, &herr); + +#ifdef HAVE_DD_LOCK + __lock_release(addr_lock); +#endif + if (rval != NS_SUCCESS) + return NULL; + else + return hp; +} + +int +__gethostbyaddr_r (const char *addr, int len, int type, + struct hostent *result, void *buffer, int buflen, + struct hostent **hp, int *herr) +{ + int rval; + + static const ns_dtab dtab[] = { + NS_FILES_CB(_ht_gethostbyaddr, NULL) + { NSSRC_DNS, _dns_gethostbyaddr, NULL }, + NS_NIS_CB(_nis_gethostbyaddr, NULL) /* force -DHESIOD */ + { 0 } + }; + + rval = nsdispatch((void *)hp, dtab, NSDB_HOSTS, "gethostbyaddr", + default_src, addr, len, type, result, buffer, buflen, herr); + + if(rval != NS_SUCCESS) + return rval; + else + return 0; +} + +void +sethostent(stayopen) + int stayopen; +{ + _sethosthtent(stayopen); + _sethostdnsent(stayopen); +} + +void +endhostent() +{ + _endhosthtent(); + _endhostdnsent(); +} + +void +sethostent_r(int f, FILE **hostfile, int *stayopen) +{ + _sethosthtent_r(f, hostfile, stayopen); + _sethostdnsent(f); +} + +void +endhostent_r(FILE **hostfile, int *stayopen) +{ + _endhosthtent_r(hostfile, stayopen); + _endhostdnsent(); +} diff --git a/newlib/libc/sys/linux/net/getifaddrs.3 b/newlib/libc/sys/linux/net/getifaddrs.3 new file mode 100644 index 000000000..47e50049d --- /dev/null +++ b/newlib/libc/sys/linux/net/getifaddrs.3 @@ -0,0 +1,164 @@ +.\" $FreeBSD: src/lib/libc/net/getifaddrs.3,v 1.6 2001/10/01 16:08:55 ru Exp $ +.\" $KAME: getifaddrs.3,v 1.4 2000/05/17 14:13:14 itojun Exp $ +.\" BSDI getifaddrs.3,v 2.5 2000/02/23 14:51:59 dab Exp +.\" +.\" Copyright (c) 1995, 1999 +.\" Berkeley Software Design, Inc. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" +.\" THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL Berkeley Software Design, Inc. BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.Dd October 12, 1995 +.Dt GETIFADDRS 3 +.Os +.Sh NAME +.Nm getifaddrs +.Nd get interface addresses +.Sh SYNOPSIS +.In sys/types.h +.In sys/socket.h +.In ifaddrs.h +.Ft int +.Fn getifaddrs "struct ifaddrs **ifap" +.Ft void +.Fn freeifaddrs "struct ifaddrs *ifp" +.Sh DESCRIPTION +The +.Fn getifaddrs +function stores a reference to a linked list of the network interfaces +on the local machine in the memory referenced by +.Fa ifap . +The list consists of +.Nm ifaddrs +structures, as defined in the include file +.Aq Pa ifaddrs.h . +The +.Nm ifaddrs +structure contains at least the following entries: +.Bd -literal + struct ifaddrs *ifa_next; /* Pointer to next struct */ + char *ifa_name; /* Interface name */ + u_int ifa_flags; /* Interface flags */ + struct sockaddr *ifa_addr; /* Interface address */ + struct sockaddr *ifa_netmask; /* Interface netmask */ + struct sockaddr *ifa_broadaddr; /* Interface broadcast address */ + struct sockaddr *ifa_dstaddr; /* P2P interface destination */ + void *ifa_data; /* Address specific data */ +.Ed +.Pp +The +.Li ifa_next +field contains a pointer to the next structure on the list. +This field is +.Dv NULL +in last structure on the list. +.Pp +The +.Li ifa_name +field contains the interface name. +.Pp +The +.Li ifa_flags +field contains the interface flags, as set by +.Xr ifconfig 8 +utility. +.Pp +The +.Li ifa_addr +field references either the address of the interface or the link level +address of the interface, if one exists, otherwise it is NULL. +(The +.Li sa_family +field of the +.Li ifa_addr +field should be consulted to determine the format of the +.Li ifa_addr +address.) +.Pp +The +.Li ifa_netmask +field references the netmask associated with +.Li ifa_addr , +if one is set, otherwise it is NULL. +.Pp +The +.Li ifa_broadaddr +field, +which should only be referenced for non-P2P interfaces, +references the broadcast address associated with +.Li ifa_addr , +if one exists, otherwise it is NULL. +.Pp +The +.Li ifa_dstaddr +field references the destination address on a P2P interface, +if one exists, otherwise it is NULL. +.Pp +The +.Li ifa_data +field references address family specific data. For +.Dv AF_LINK +addresses it contains a pointer to the +.Fa struct if_data +(as defined in include file +.Aq Pa net/if.h ) +which contains various interface attributes and statistics. +For all other address families, it contains a pointer to the +.Fa struct ifa_data +(as defined in include file +.Aq Pa net/if.h ) +which contains per-address interface statistics. +.Pp +The data returned by +.Fn getifaddrs +is dynamically allocated and should be freed using +.Fn freeifaddrs +when no longer needed. +.Sh RETURN VALUES +.Rv -std getifaddrs +.Sh ERRORS +The +.Fn getifaddrs +may fail and set +.Va errno +for any of the errors specified for the library routines +.Xr ioctl 2 , +.Xr socket 2 , +.Xr malloc 3 +or +.Xr sysctl 3 . +.Sh BUGS +If both +.Aq Pa net/if.h +and +.Aq Pa ifaddrs.h +are being included, +.Aq Pa net/if.h +.Em must +be included before +.Aq Pa ifaddrs.h . +.Sh SEE ALSO +.Xr ioctl 2 , +.Xr socket 2 , +.Xr sysctl 3 , +.Xr networking 4 , +.Xr ifconfig 8 +.Sh HISTORY +The +.Nm +implementation first appeared in BSDi +.Bsx . diff --git a/newlib/libc/sys/linux/net/getifaddrs.c b/newlib/libc/sys/linux/net/getifaddrs.c new file mode 100644 index 000000000..fdb8c9b9d --- /dev/null +++ b/newlib/libc/sys/linux/net/getifaddrs.c @@ -0,0 +1,401 @@ +/* $KAME: getifaddrs.c,v 1.9 2001/08/20 02:31:20 itojun Exp $ */ + +/* + * Copyright (c) 1995, 1999 + * Berkeley Software Design, Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL Berkeley Software Design, Inc. BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * BSDI getifaddrs.c,v 2.12 2000/02/23 14:51:59 dab Exp + */ +/* + * NOTE: SIOCGIFCONF case is not LP64 friendly. it also does not perform + * try-and-error for region size. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> +#include <sys/types.h> +#include <sys/sockio.h> +#include <unistd.h> + +#include "namespace.h" +#include <sys/types.h> +#include <sys/ioctl.h> +#include <sys/socket.h> +#include <net/if.h> +#ifdef NET_RT_IFLIST +#include <sys/param.h> +#include <net/route.h> +#include <sys/sysctl.h> +#include <net/if_dl.h> +#endif + +#include <ifaddrs.h> +#include <stdlib.h> +#include <string.h> +#include "un-namespace.h" + +#if !defined(AF_LINK) +#define SA_LEN(sa) sizeof(struct sockaddr) +#endif + +#if !defined(SA_LEN) +#define SA_LEN(sa) sizeof(struct sockaddr) +#endif + +#define SALIGN (sizeof(long) - 1) +#define SA_RLEN(sa) (sizeof(struct sockaddr) ? ((sizeof(struct sockaddr) + SALIGN) & ~SALIGN) : (SALIGN + 1)) + +#ifndef ALIGNBYTES +/* + * On systems with a routing socket, ALIGNBYTES should match the value + * that the kernel uses when building the messages. + */ +#define ALIGNBYTES XXX +#endif +#ifndef ALIGN +#define ALIGN(p) (((u_long)(p) + ALIGNBYTES) &~ ALIGNBYTES) +#endif + +#if _BSDI_VERSION >= 199701 +#define HAVE_IFM_DATA +#endif + +#if _BSDI_VERSION >= 199802 +/* ifam_data is very specific to recent versions of bsdi */ +#define HAVE_IFAM_DATA +#endif + +#if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__) +#define HAVE_IFM_DATA +#endif + +int +getifaddrs(struct ifaddrs **pif) +{ + int icnt = 1; + int dcnt = 0; + int ncnt = 0; +#ifdef NET_RT_IFLIST + int mib[6]; + size_t needed; + char *buf; + char *next; + struct ifaddrs *cif = 0; + char *p, *p0; + struct rt_msghdr *rtm; + struct if_msghdr *ifm; + struct ifa_msghdr *ifam; + struct sockaddr_dl *dl; + struct sockaddr *sa; + struct ifaddrs *ifa, *ift; + u_short idx = 0; +#else /* NET_RT_IFLIST */ + struct ifaddrs *ifa, *ift; + char buf[1024]; + int m, sock; + struct ifconf ifc; + struct ifreq *ifr; + struct ifreq *lifr; +#endif /* NET_RT_IFLIST */ + int i; + size_t len, alen; + char *data; + char *names; + +#ifdef NET_RT_IFLIST + mib[0] = CTL_NET; + mib[1] = PF_ROUTE; + mib[2] = 0; /* protocol */ + mib[3] = 0; /* wildcard address family */ + mib[4] = NET_RT_IFLIST; + mib[5] = 0; /* no flags */ + if (__sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) + return (-1); + if ((buf = malloc(needed)) == NULL) + return (-1); + if (__sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { + free(buf); + return (-1); + } + + for (next = buf; next < buf + needed; next += rtm->rtm_msglen) { + rtm = (struct rt_msghdr *)(void *)next; + if (rtm->rtm_version != RTM_VERSION) + continue; + switch (rtm->rtm_type) { + case RTM_IFINFO: + ifm = (struct if_msghdr *)(void *)rtm; + if (ifm->ifm_addrs & RTA_IFP) { + idx = ifm->ifm_index; + ++icnt; + dl = (struct sockaddr_dl *)(void *)(ifm + 1); + dcnt += SA_RLEN((struct sockaddr *)(void*)dl) + + ALIGNBYTES; +#ifdef HAVE_IFM_DATA + dcnt += sizeof(ifm->ifm_data); +#endif /* HAVE_IFM_DATA */ + ncnt += dl->sdl_nlen + 1; + } else + idx = 0; + break; + + case RTM_NEWADDR: + ifam = (struct ifa_msghdr *)(void *)rtm; + if (idx && ifam->ifam_index != idx) + abort(); /* this cannot happen */ + +#define RTA_MASKS (RTA_NETMASK | RTA_IFA | RTA_BRD) + if (idx == 0 || (ifam->ifam_addrs & RTA_MASKS) == 0) + break; + p = (char *)(void *)(ifam + 1); + ++icnt; +#ifdef HAVE_IFAM_DATA + dcnt += sizeof(ifam->ifam_data) + ALIGNBYTES; +#endif /* HAVE_IFAM_DATA */ + /* Scan to look for length of address */ + alen = 0; + for (p0 = p, i = 0; i < RTAX_MAX; i++) { + if ((RTA_MASKS & ifam->ifam_addrs & (1 << i)) + == 0) + continue; + sa = (struct sockaddr *)(void *)p; + len = SA_RLEN(sa); + if (i == RTAX_IFA) { + alen = len; + break; + } + p += len; + } + for (p = p0, i = 0; i < RTAX_MAX; i++) { + if ((RTA_MASKS & ifam->ifam_addrs & (1 << i)) + == 0) + continue; + sa = (struct sockaddr *)(void *)p; + len = SA_RLEN(sa); + if (i == RTAX_NETMASK && SA_LEN(sa) == 0) + dcnt += alen; + else + dcnt += len; + p += len; + } + break; + } + } +#else /* NET_RT_IFLIST */ + ifc.ifc_buf = buf; + ifc.ifc_len = sizeof(buf); + + if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) + return (-1); + i = ioctl(sock, SIOCGIFCONF, (char *)&ifc); + close(sock); + if (i < 0) + return (-1); + + ifr = ifc.ifc_req; + lifr = (struct ifreq *)&ifc.ifc_buf[ifc.ifc_len]; + + while (ifr < lifr) { + struct sockaddr *sa; + + sa = &ifr->ifr_addr; + ++icnt; + dcnt += SA_RLEN(sa); + ncnt += sizeof(ifr->ifr_name) + 1; + + if (SA_LEN(sa) < sizeof(*sa)) + ifr = (struct ifreq *)(((char *)sa) + sizeof(*sa)); + else + ifr = (struct ifreq *)(((char *)sa) + SA_LEN(sa)); + } +#endif /* NET_RT_IFLIST */ + + if (icnt + dcnt + ncnt == 1) { + *pif = NULL; + free(buf); + return (0); + } + data = malloc(sizeof(struct ifaddrs) * icnt + dcnt + ncnt); + if (data == NULL) { + free(buf); + return(-1); + } + + ifa = (struct ifaddrs *)(void *)data; + data += sizeof(struct ifaddrs) * icnt; + names = data + dcnt; + + memset(ifa, 0, sizeof(struct ifaddrs) * icnt); + ift = ifa; + +#ifdef NET_RT_IFLIST + idx = 0; + for (next = buf; next < buf + needed; next += rtm->rtm_msglen) { + rtm = (struct rt_msghdr *)(void *)next; + if (rtm->rtm_version != RTM_VERSION) + continue; + switch (rtm->rtm_type) { + case RTM_IFINFO: + ifm = (struct if_msghdr *)(void *)rtm; + if (ifm->ifm_addrs & RTA_IFP) { + idx = ifm->ifm_index; + dl = (struct sockaddr_dl *)(void *)(ifm + 1); + + cif = ift; + ift->ifa_name = names; + ift->ifa_flags = (int)ifm->ifm_flags; + memcpy(names, dl->sdl_data, + (size_t)dl->sdl_nlen); + names[dl->sdl_nlen] = 0; + names += dl->sdl_nlen + 1; + + ift->ifa_addr = (struct sockaddr *)(void *)data; + memcpy(data, dl, + (size_t)SA_LEN((struct sockaddr *) + (void *)dl)); + data += SA_RLEN((struct sockaddr *)(void *)dl); + +#ifdef HAVE_IFM_DATA + /* ifm_data needs to be aligned */ + ift->ifa_data = data = (void *)ALIGN(data); + memcpy(data, &ifm->ifm_data, sizeof(ifm->ifm_data)); + data += sizeof(ifm->ifm_data); +#else /* HAVE_IFM_DATA */ + ift->ifa_data = NULL; +#endif /* HAVE_IFM_DATA */ + + ift = (ift->ifa_next = ift + 1); + } else + idx = 0; + break; + + case RTM_NEWADDR: + ifam = (struct ifa_msghdr *)(void *)rtm; + if (idx && ifam->ifam_index != idx) + abort(); /* this cannot happen */ + + if (idx == 0 || (ifam->ifam_addrs & RTA_MASKS) == 0) + break; + ift->ifa_name = cif->ifa_name; + ift->ifa_flags = cif->ifa_flags; + ift->ifa_data = NULL; + p = (char *)(void *)(ifam + 1); + /* Scan to look for length of address */ + alen = 0; + for (p0 = p, i = 0; i < RTAX_MAX; i++) { + if ((RTA_MASKS & ifam->ifam_addrs & (1 << i)) + == 0) + continue; + sa = (struct sockaddr *)(void *)p; + len = SA_RLEN(sa); + if (i == RTAX_IFA) { + alen = len; + break; + } + p += len; + } + for (p = p0, i = 0; i < RTAX_MAX; i++) { + if ((RTA_MASKS & ifam->ifam_addrs & (1 << i)) + == 0) + continue; + sa = (struct sockaddr *)(void *)p; + len = SA_RLEN(sa); + switch (i) { + case RTAX_IFA: + ift->ifa_addr = + (struct sockaddr *)(void *)data; + memcpy(data, p, len); + data += len; + break; + + case RTAX_NETMASK: + ift->ifa_netmask = + (struct sockaddr *)(void *)data; + if (SA_LEN(sa) == 0) { + memset(data, 0, alen); + data += alen; + break; + } + memcpy(data, p, len); + data += len; + break; + + case RTAX_BRD: + ift->ifa_broadaddr = + (struct sockaddr *)(void *)data; + memcpy(data, p, len); + data += len; + break; + } + p += len; + } + +#ifdef HAVE_IFAM_DATA + /* ifam_data needs to be aligned */ + ift->ifa_data = data = (void *)ALIGN(data); + memcpy(data, &ifam->ifam_data, sizeof(ifam->ifam_data)); + data += sizeof(ifam->ifam_data); +#endif /* HAVE_IFAM_DATA */ + + ift = (ift->ifa_next = ift + 1); + break; + } + } + + free(buf); +#else /* NET_RT_IFLIST */ + ifr = ifc.ifc_req; + lifr = (struct ifreq *)&ifc.ifc_buf[ifc.ifc_len]; + + while (ifr < lifr) { + struct sockaddr *sa; + + ift->ifa_name = names; + names[sizeof(ifr->ifr_name)] = 0; + strncpy(names, ifr->ifr_name, sizeof(ifr->ifr_name)); + while (*names++) + ; + + ift->ifa_addr = (struct sockaddr *)data; + sa = &ifr->ifr_addr; + memcpy(data, sa, SA_LEN(sa)); + data += SA_RLEN(sa); + + ifr = (struct ifreq *)(((char *)sa) + SA_LEN(sa)); + ift = (ift->ifa_next = ift + 1); + } +#endif /* NET_RT_IFLIST */ + if (--ift >= ifa) { + ift->ifa_next = NULL; + *pif = ifa; + } else { + *pif = NULL; + free(ifa); + } + return (0); +} + +void +freeifaddrs(struct ifaddrs *ifp) +{ + + free(ifp); +} diff --git a/newlib/libc/sys/linux/net/getipnodebyname.3 b/newlib/libc/sys/linux/net/getipnodebyname.3 new file mode 100644 index 000000000..5b8ea1ecb --- /dev/null +++ b/newlib/libc/sys/linux/net/getipnodebyname.3 @@ -0,0 +1,461 @@ +.\" $FreeBSD: src/lib/libc/net/getipnodebyname.3,v 1.8 2001/10/01 16:08:55 ru Exp $ +.\" $KAME: getipnodebyname.3,v 1.6 2000/08/09 21:16:17 itojun Exp $ +.\" +.\" Copyright (c) 1983, 1987, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" From: @(#)gethostbyname.3 8.4 (Berkeley) 5/25/95 +.\" +.Dd May 25, 1995 +.Dt GETIPNODEBYNAME 3 +.Os +.\" +.Sh NAME +.Nm getipnodebyname , +.Nm getipnodebyaddr , +.Nm freehostent +.Nd nodename-to-address and address-to-nodename translation +.\" +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/socket.h +.In netdb.h +.Ft "struct hostent *" +.Fn getipnodebyname "const char *name" "int af" "int flags" "int *error_num" +.Ft "struct hostent *" +.Fn getipnodebyaddr "const void *src" "size_t len" "int af" "int *error_num" +.Ft void +.Fn freehostent "struct hostent *ptr" +.\" +.Sh DESCRIPTION +.Fn getipnodebyname +and +.Fn getipnodebyaddr +functions are very similar to +.Xr gethostbyname 3 , +.Xr gethostbyname2 3 +and +.Xr gethostbyaddr 3 . +The functions cover all the functionalities provided by the older ones, +and provide better interface to programmers. +The functions require additional arguments, +.Ar af , +and +.Ar flags , +for specifying address family and operation mode. +The additional arguments allow programmer to get address for a nodename, +for specific address family +(such as +.Dv AF_INET +or +.Dv AF_INET6 ) . +The functions also require an additional pointer argument, +.Ar error_num +to return the appropriate error code, +to support thread safe error code returns. +.Pp +The type and usage of the return value, +.Li "struct hostent" +is described in +.Xr gethostbyname 3 . +.Pp +For +.Fn getipnodebyname , +the +.Ar name +argument can be either a node name or a numeric address +string +(i.e., a dotted-decimal IPv4 address or an IPv6 hex address). +The +.Ar af +argument specifies the address family, either +.Dv AF_INET +or +.Dv AF_INET6 . +The +.Ar flags +argument specifies the types of addresses that are searched for, +and the types of addresses that are returned. +We note that a special flags value of +.Dv AI_DEFAULT +(defined below) +should handle most applications. +That is, porting simple applications to use IPv6 replaces the call +.Bd -literal -offset + hptr = gethostbyname(name); +.Ed +.Pp +with +.Bd -literal -offset + hptr = getipnodebyname(name, AF_INET6, AI_DEFAULT, &error_num); +.Ed +.Pp +Applications desiring finer control over the types of addresses +searched for and returned, can specify other combinations of the +.Ar flags +argument. +.Pp +A +.Ar flags +of +.Li 0 +implies a strict interpretation of the +.Ar af +argument: +.Bl -bullet +.It +If +.Ar flags +is 0 and +.Ar af +is +.Dv AF_INET , +then the caller wants only IPv4 addresses. +A query is made for +.Li A +records. +If successful, the IPv4 addresses are returned and the +.Li h_length +member of the +.Li hostent +structure will be 4, else the function returns a +.Dv NULL +pointer. +.It +If +.Ar flags +is 0 and if +.Ar af +is +.Li AF_INET6 , +then the caller wants only IPv6 addresses. +A query is made for +.Li AAAA +records. +If successful, the IPv6 addresses are returned and the +.Li h_length +member of the +.Li hostent +structure will be 16, else the function returns a +.Dv NULL +pointer. +.El +.Pp +Other constants can be logically-ORed into the +.Ar flags +argument, to modify the behavior of the function. +.Bl -bullet +.It +If the +.Dv AI_V4MAPPED +flag is specified along with an +.Ar af +of +.Dv AF_INET6 , +then the caller will accept IPv4-mapped IPv6 addresses. +That is, if no +.Li AAAA +records are found then a query is made for +.Li A +records and any found are returned as IPv4-mapped IPv6 addresses +.Li ( h_length +will be 16). +The +.Dv AI_V4MAPPED +flag is ignored unless +.Ar af +equals +.Dv AF_INET6 . +.It +The +.Dv AI_V4MAPPED_CFG +flag is exact same as the +.Dv AI_V4MAPPED +flag only if the kernel supports IPv4-mapped IPv6 address. +.It +If the +.Dv AI_ALL +flag is used in conjunction with the +.Dv AI_V4MAPPED +flag, and only used with the IPv6 address family. +When +.Dv AI_ALL +is logically or'd with +.Dv AI_V4MAPPED +flag then the caller wants all addresses: IPv6 and IPv4-mapped IPv6. +A query is first made for +.Li AAAA +records and if successful, the +IPv6 addresses are returned. Another query is then made for +.Li A +records and any found are returned as IPv4-mapped IPv6 addresses. +.Li h_length +will be 16. Only if both queries fail does the function +return a +.Dv NULL +pointer. This flag is ignored unless af equals +AF_INET6. If both +.Dv AI_ALL +and +.Dv AI_V4MAPPED +are specified, +.Dv AI_ALL +takes precedence. +.It +The +.Dv AI_ADDRCONFIG +flag specifies that a query for +.Li AAAA +records +should occur only if the node has at least one IPv6 source +address configured and a query for +.Li A +records should occur only if the node has at least one IPv4 source address +configured. +.Pp +For example, if the node has no IPv6 source addresses configured, +and +.Ar af +equals AF_INET6, and the node name being looked up has both +.Li AAAA +and +.Li A +records, then: +(a) if only +.Dv AI_ADDRCONFIG +is +specified, the function returns a +.Dv NULL +pointer; +(b) if +.Dv AI_ADDRCONFIG +| +.Dv AI_V4MAPPED +is specified, the +.Li A +records are returned as IPv4-mapped IPv6 addresses; +.El +.Pp +The special flags value of +.Dv AI_DEFAULT +is defined as +.Bd -literal -offset + #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) +.Ed +.Pp +We noted that the +.Fn getipnodebyname +function must allow the +.Ar name +argument to be either a node name or a literal address string +(i.e., a dotted-decimal IPv4 address or an IPv6 hex address). +This saves applications from having to call +.Xr inet_pton 3 +to handle literal address strings. +When the +.Ar name +argument is a literal address string, +the +.Ar flags +argument is always ignored. +.Pp +There are four scenarios based on the type of literal address string +and the value of the +.Ar af +argument. +The two simple cases are when +.Ar name +is a dotted-decimal IPv4 address and +.Ar af +equals +.Dv AF_INET , +or when +.Ar name +is an IPv6 hex address and +.Ar af +equals +.Dv AF_INET6 . +The members of the +returned hostent structure are: +.Li h_name +points to a copy of the +.Ar name +argument, +.Li h_aliases +is a +.Dv NULL +pointer, +.Li h_addrtype +is a copy of the +.Ar af +argument, +.Li h_length +is either 4 +(for +.Dv AF_INET ) +or 16 +(for +.Dv AF_INET6 ) , +.Li h_addr_list[0] +is a pointer to the 4-byte or 16-byte binary address, +and +.Li h_addr_list[1] +is a +.Dv NULL +pointer. +.Pp +When +.Ar name +is a dotted-decimal IPv4 address and +.Ar af +equals +.Dv AF_INET6 , +and +.Dv AI_V4MAPPED +is specified, +an IPv4-mapped IPv6 address is returned: +.Li h_name +points to an IPv6 hex address containing the IPv4-mapped IPv6 address, +.Li h_aliases +is a +.Dv NULL +pointer, +.Li h_addrtype +is +.Dv AF_INET6 , +.Li h_length +is 16, +.Li h_addr_list[0] +is a pointer to the 16-byte binary address, and +.Li h_addr_list[1] +is a +.Dv NULL +pointer. +.Pp +It is an error when +.Ar name +is an IPv6 hex address and +.Ar af +equals +.Dv AF_INET . +The function's return value is a +.Dv NULL +pointer and the value pointed to by +.Ar error_num +equals +.Dv HOST_NOT_FOUND . +.Pp +.Fn getipnodebyaddr +takes almost the same argument as +.Xr gethostbyaddr 3 , +but adds a pointer to return an error number. +Additionally it takes care of IPv4-mapped IPv6 addresses, +and IPv4-compatible IPv6 addresses. +.Pp +.Fn getipnodebyname +and +.Fn getipnodebyaddr +dynamically allocate the structure to be returned to the caller. +.Fn freehostent +reclaims memory region allocated and returned by +.Fn getipnodebyname +or +.Fn getipnodebyaddr . +.\" +.Sh FILES +.Bl -tag -width /etc/nsswitch.conf -compact +.It Pa /etc/hosts +.It Pa /etc/nsswitch.conf +.It Pa /etc/resolv.conf +.El +.\" +.Sh DIAGNOSTICS +.Fn getipnodebyname +and +.Fn getipnodebyaddr +returns +.Dv NULL +on errors. +The integer values pointed to by +.Ar error_num +may then be checked to see whether this is a temporary failure +or an invalid or unknown host. +The meanings of each error code are described in +.Xr gethostbyname 3 . +.\" +.Sh SEE ALSO +.Xr gethostbyaddr 3 , +.Xr gethostbyname 3 , +.Xr hosts 5 , +.Xr nsswitch.conf 5 , +.Xr services 5 , +.Xr hostname 7 , +.Xr named 8 +.Pp +.Rs +.%A R. Gilligan +.%A S. Thomson +.%A J. Bound +.%A W. Stevens +.%T Basic Socket Interface Extensions for IPv6 +.%R RFC2553 +.%D March 1999 +.Re +.\" +.Sh HISTORY +The implementation first appeared in KAME advanced networking kit. +.\" +.Sh STANDARDS +.Fn getipnodebyname +and +.Fn getipnodebyaddr +are documented in +.Dq Basic Socket Interface Extensions for IPv6 +(RFC2553). +.\" +.Sh BUGS +.Fn getipnodebyname +and +.Fn getipnodebyaddr +do not handle scoped IPv6 address properly. +If you use these functions, +your program will not be able to handle scoped IPv6 addresses. +For IPv6 address manipulation, +.Fn getaddrinfo 3 +and +.Fn getnameinfo 3 +are recommended. +.Pp +The current implementation is not thread-safe. +.Pp +The text was shamelessly copied from RFC2553. diff --git a/newlib/libc/sys/linux/net/getnameinfo.3 b/newlib/libc/sys/linux/net/getnameinfo.3 new file mode 100644 index 000000000..d7afa2f40 --- /dev/null +++ b/newlib/libc/sys/linux/net/getnameinfo.3 @@ -0,0 +1,311 @@ +.\" $FreeBSD: src/lib/libc/net/getnameinfo.3,v 1.11 2001/10/01 16:08:55 ru Exp $ +.\" $KAME: getnameinfo.3,v 1.17 2000/08/09 21:16:17 itojun Exp $ +.\" +.\" Copyright (c) 1983, 1987, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" From: @(#)gethostbyname.3 8.4 (Berkeley) 5/25/95 +.\" +.Dd May 25, 1995 +.Dt GETNAMEINFO 3 +.Os +.\" +.Sh NAME +.Nm getnameinfo +.Nd address-to-nodename translation in protocol-independent manner +.\" +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/socket.h +.In netdb.h +.Ft int +.Fn getnameinfo "const struct sockaddr *sa" "socklen_t salen" \ +"char *host" "size_t hostlen" "char *serv" "size_t servlen" "int flags" +.\" +.Sh DESCRIPTION +The +.Fn getnameinfo +function is defined for protocol-independent address-to-nodename translation. +Its functionality is a reverse conversion of +.Xr getaddrinfo 3 , +and implements similar functionality with +.Xr gethostbyaddr 3 +and +.Xr getservbyport 3 +in more sophisticated manner. +.Pp +This function looks up an IP address and port number provided by the +caller in the DNS and system-specific database, and returns text +strings for both in buffers provided by the caller. +The function indicates successful completion by a zero return value; +a non-zero return value indicates failure. +.Pp +The first argument, +.Fa sa , +points to either a +.Li sockaddr_in +structure (for IPv4) or a +.Li sockaddr_in6 +structure (for IPv6) that holds the IP address and port number. +The +.Fa salen +argument gives the length of the +.Li sockaddr_in +or +.Li sockaddr_in6 +structure. +.Pp +The function returns the nodename associated with the IP address in +the buffer pointed to by the +.Fa host +argument. +The caller provides the size of this buffer via the +.Fa hostlen +argument. +The service name associated with the port number is returned in the buffer +pointed to by +.Fa serv , +and the +.Fa servlen +argument gives the length of this buffer. +The caller specifies not to return either string by providing a zero +value for the +.Fa hostlen +or +.Fa servlen +arguments. +Otherwise, the caller must provide buffers large enough to hold the +nodename and the service name, including the terminating null characters. +.Pp +Unfortunately most systems do not provide constants that specify the +maximum size of either a fully-qualified domain name or a service name. +Therefore to aid the application in allocating buffers for these two +returned strings the following constants are defined in +.Aq Pa netdb.h : +.Bd -literal -offset +#define NI_MAXHOST 1025 +#define NI_MAXSERV 32 +.Ed +.Pp +The first value is actually defined as the constant +.Dv MAXDNAME +in recent versions of BIND's +.Aq Pa arpa/nameser.h +header +(older versions of BIND define this constant to be 256) +and the second is a guess based on the services listed in the current +Assigned Numbers RFC. +.Pp +The final argument is a +.Fa flag +that changes the default actions of this function. +By default the fully-qualified domain name (FQDN) for the host is +looked up in the DNS and returned. +If the flag bit +.Dv NI_NOFQDN +is set, only the nodename portion of the FQDN is returned for local hosts. +.Pp +If the +.Fa flag +bit +.Dv NI_NUMERICHOST +is set, or if the host's name cannot be located in the DNS, +the numeric form of the host's address is returned instead of its name +(e.g., by calling +.Fn inet_ntop +instead of +.Fn getnodebyaddr ) . +If the +.Fa flag +bit +.Dv NI_NAMEREQD +is set, an error is returned if the host's name cannot be located in the DNS. +.Pp +If the flag bit +.Dv NI_NUMERICSERV +is set, the numeric form of the service address is returned +(e.g., its port number) +instead of its name. +The two +.Dv NI_NUMERICxxx +flags are required to support the +.Fl n +flag that many commands provide. +.Pp +A fifth flag bit, +.Dv NI_DGRAM , +specifies that the service is a datagram service, and causes +.Fn getservbyport +to be called with a second argument of +.Dq udp +instead of its default of +.Dq tcp . +This is required for the few ports (512-514) +that have different services for UDP and TCP. +.Pp +These +.Dv NI_xxx +flags are defined in +.Aq Pa netdb.h . +.\" +.Sh EXTENSION +The implementation allows experimental numeric IPv6 address notation with +scope identifier. +IPv6 link-local address will appear as string like +.Dq Li fe80::1%ne0 , +if +.Dv NI_WITHSCOPEID +bit is enabled in +.Ar flags +argument. +Refer to +.Xr getaddrinfo 3 +for the notation. +.\" +.Sh EXAMPLES +The following code tries to get numeric hostname, and service name, +for given socket address. +Observe that there is no hardcoded reference to particular address family. +.Bd -literal -offset indent +struct sockaddr *sa; /* input */ +char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV]; + +if (getnameinfo(sa, sa->sa_len, hbuf, sizeof(hbuf), sbuf, + sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV)) { + errx(1, "could not get numeric hostname"); + /*NOTREACHED*/ +} +printf("host=%s, serv=%s\\n", hbuf, sbuf); +.Ed +.Pp +The following version checks if the socket address has reverse address mapping. +.Bd -literal -offset indent +struct sockaddr *sa; /* input */ +char hbuf[NI_MAXHOST]; + +if (getnameinfo(sa, sa->sa_len, hbuf, sizeof(hbuf), NULL, 0, + NI_NAMEREQD)) { + errx(1, "could not resolve hostname"); + /*NOTREACHED*/ +} +printf("host=%s\\n", hbuf); +.Ed +.\" +.Sh FILES +.Bl -tag -width /etc/nsswitch.conf -compact +.It Pa /etc/hosts +.It Pa /etc/nsswitch.conf +.It Pa /etc/resolv.conf +.El +.\" +.Sh DIAGNOSTICS +The function indicates successful completion by a zero return value; +a non-zero return value indicates failure. +Error codes are as below: +.Bl -tag -width Er +.It Bq Er EAI_AGAIN +The name could not be resolved at this time. +Future attempts may succeed. +.It Bq Er EAI_BADFLAGS +The flags had an invalid value. +.It Bq Er EAI_FAIL +A non-recoverable error occurred. +.It Bq Er EAI_FAMILY +The address family was not recognized or the address length was invalid +for the specified family. +.It Bq Er EAI_MEMORY +There was a memory allocation failure. +.It Bq Er EAI_NONAME +The name does not resolve for the supplied parameters. +.Dv NI_NAMEREQD +is set and the host's name cannot be located, +or both nodename and servname were null. +.It Bq Er EAI_SYSTEM +A system error occurred. +The error code can be found in errno. +.El +.\" +.Sh SEE ALSO +.Xr getaddrinfo 3 , +.Xr gethostbyaddr 3 , +.Xr getservbyport 3 , +.Xr hosts 5 , +.Xr services 5 , +.Xr hostname 7 , +.Xr named 8 +.Pp +.Rs +.%A R. Gilligan +.%A S. Thomson +.%A J. Bound +.%A W. Stevens +.%T Basic Socket Interface Extensions for IPv6 +.%R RFC2553 +.%D March 1999 +.Re +.Rs +.%A Tatsuya Jinmei +.%A Atsushi Onoe +.%T "An Extension of Format for IPv6 Scoped Addresses" +.%R internet draft +.%N draft-ietf-ipngwg-scopedaddr-format-02.txt +.%O work in progress material +.Re +.Rs +.%A Craig Metz +.%T Protocol Independence Using the Sockets API +.%B "Proceedings of the freenix track: 2000 USENIX annual technical conference" +.%D June 2000 +.Re +.\" +.Sh HISTORY +The implementation first appeared in WIDE Hydrangea IPv6 protocol stack kit. +.\" +.Sh STANDARDS +The +.Fn getaddrinfo +function is defined in +.St -p1003.1g-2000 , +and documented in +.Dq Basic Socket Interface Extensions for IPv6 +(RFC2553). +.\" +.Sh BUGS +The current implementation is not thread-safe. +.Pp +The text was shamelessly copied from RFC2553. +.Pp +The type of the 2nd argument should be +.Li socklen_t +for RFC2553 conformance. +The current code is based on pre-RFC2553 specification. diff --git a/newlib/libc/sys/linux/net/getnameinfo.c b/newlib/libc/sys/linux/net/getnameinfo.c new file mode 100644 index 000000000..e2f9631c1 --- /dev/null +++ b/newlib/libc/sys/linux/net/getnameinfo.c @@ -0,0 +1,372 @@ +/* $KAME: getnameinfo.c,v 1.45 2000/09/25 22:43:56 itojun Exp $ */ + +/* + * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Issues to be discussed: + * - Thread safe-ness must be checked + * - RFC2553 says that we should raise error on short buffer. X/Open says + * we need to truncate the result. We obey RFC2553 (and X/Open should be + * modified). ipngwg rough consensus seems to follow RFC2553. + * - What is "local" in NI_FQDN? + * - NI_NAMEREQD and NI_NUMERICHOST conflict with each other. + * - (KAME extension) NI_WITHSCOPEID when called with global address, + * and sin6_scope_id filled + */ + +#include <sys/cdefs.h> +#include <sys/types.h> +#include <machine/endian.h> + +#include <sys/types.h> +#include <sys/socket.h> +#include <net/if.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> +#include <netdb.h> +#include <resolv.h> +#include <string.h> +#include <stddef.h> +#include <errno.h> + +#define SUCCESS 0 +#define ANY 0 +#define YES 1 +#define NO 0 + +static struct afd { + int a_af; + int a_addrlen; + int a_socklen; + int a_off; +} afdl [] = { +#ifdef INET6 + {PF_INET6, sizeof(struct in6_addr), sizeof(struct sockaddr_in6), + offsetof(struct sockaddr_in6, sin6_addr)}, +#endif + {PF_INET, sizeof(struct in_addr), sizeof(struct sockaddr_in), + offsetof(struct sockaddr_in, sin_addr)}, + {0, 0, 0}, +}; + +struct sockinet { + u_char si_len; + u_char si_family; + u_short si_port; +}; + +#ifdef INET6 +static int ip6_parsenumeric(const struct sockaddr *, const char *, char *, + size_t, int); +static int ip6_sa2str(const struct sockaddr_in6 *, char *, size_t, int); +#endif + +/* 2553bis: use EAI_xx for getnameinfo */ +#define ENI_NOSOCKET EAI_FAIL /*XXX*/ +#define ENI_NOSERVNAME EAI_NONAME +#define ENI_NOHOSTNAME EAI_NONAME +#define ENI_MEMORY EAI_MEMORY +#define ENI_SYSTEM EAI_SYSTEM +#define ENI_FAMILY EAI_FAMILY +#define ENI_SALEN EAI_FAMILY + +int +getnameinfo(sa, salen, host, hostlen, serv, servlen, flags) + const struct sockaddr *sa; + socklen_t salen; + char *host; + size_t hostlen; + char *serv; + size_t servlen; + int flags; +{ + struct afd *afd; + struct servent *sp; + struct hostent *hp; + u_short port; + int family, i; + const char *addr; + u_int32_t v4a; + int h_error; + char numserv[512]; + char numaddr[512]; + + if (sa == NULL) + return ENI_NOSOCKET; + + family = sa->sa_family; + for (i = 0; afdl[i].a_af; i++) + if (afdl[i].a_af == family) { + afd = &afdl[i]; + goto found; + } + return ENI_FAMILY; + + found: + if (salen != afd->a_socklen) + return ENI_SALEN; + + /* network byte order */ + port = ((const struct sockinet *)sa)->si_port; + addr = (const char *)sa + afd->a_off; + + if (serv == NULL || servlen == 0) { + /* + * do nothing in this case. + * in case you are wondering if "&&" is more correct than + * "||" here: RFC2553 says that serv == NULL OR servlen == 0 + * means that the caller does not want the result. + */ + } else { + if (flags & NI_NUMERICSERV) + sp = NULL; + else { + sp = getservbyport(port, + (flags & NI_DGRAM) ? "udp" : "tcp"); + } + if (sp) { + if (strlen(sp->s_name) + 1 > servlen) + return ENI_MEMORY; + strcpy(serv, sp->s_name); + } else { + snprintf(numserv, sizeof(numserv), "%d", ntohs(port)); + if (strlen(numserv) + 1 > servlen) + return ENI_MEMORY; + strcpy(serv, numserv); + } + } + + switch (sa->sa_family) { + case AF_INET: + v4a = (u_int32_t) + ntohl(((const struct sockaddr_in *)sa)->sin_addr.s_addr); + if (IN_MULTICAST(v4a) || IN_EXPERIMENTAL(v4a)) + flags |= NI_NUMERICHOST; + v4a >>= IN_CLASSA_NSHIFT; + if (v4a == 0) + flags |= NI_NUMERICHOST; + break; +#ifdef INET6 + case AF_INET6: + { + const struct sockaddr_in6 *sin6; + sin6 = (const struct sockaddr_in6 *)sa; + switch (sin6->sin6_addr.s6_addr[0]) { + case 0x00: + if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) + ; + else if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr)) + ; + else + flags |= NI_NUMERICHOST; + break; + default: + if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { + flags |= NI_NUMERICHOST; + } + else if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) + flags |= NI_NUMERICHOST; + break; + } + } + break; +#endif + } + if (host == NULL || hostlen == 0) { + /* + * do nothing in this case. + * in case you are wondering if "&&" is more correct than + * "||" here: RFC2553 says that host == NULL OR hostlen == 0 + * means that the caller does not want the result. + */ + } else if (flags & NI_NUMERICHOST) { + int numaddrlen; + + /* NUMERICHOST and NAMEREQD conflicts with each other */ + if (flags & NI_NAMEREQD) + return ENI_NOHOSTNAME; + + switch(afd->a_af) { +#ifdef INET6 + case AF_INET6: + { + int error; + + if ((error = ip6_parsenumeric(sa, addr, host, + hostlen, flags)) != 0) + return(error); + break; + } +#endif + default: + if (inet_ntop(afd->a_af, addr, numaddr, sizeof(numaddr)) + == NULL) + return ENI_SYSTEM; + numaddrlen = strlen(numaddr); + if (numaddrlen + 1 > hostlen) /* don't forget terminator */ + return ENI_MEMORY; + strcpy(host, numaddr); + break; + } + } else { + hp = getipnodebyaddr(addr, afd->a_addrlen, afd->a_af, &h_error); + + if (hp) { +#if 0 + /* + * commented out, since "for local host" is not + * implemented here - see RFC2553 p30 + */ + if (flags & NI_NOFQDN) { + char *p; + p = strchr(hp->h_name, '.'); + if (p) + *p = '\0'; + } +#endif + if (strlen(hp->h_name) + 1 > hostlen) { + freehostent(hp); + return ENI_MEMORY; + } + strcpy(host, hp->h_name); + freehostent(hp); + } else { + if (flags & NI_NAMEREQD) + return ENI_NOHOSTNAME; + switch(afd->a_af) { +#ifdef INET6 + case AF_INET6: + { + int error; + + if ((error = ip6_parsenumeric(sa, addr, host, + hostlen, + flags)) != 0) + return(error); + break; + } +#endif + default: + if (inet_ntop(afd->a_af, addr, host, + hostlen) == NULL) + return ENI_SYSTEM; + break; + } + } + } + return SUCCESS; +} + +#ifdef INET6 +static int +ip6_parsenumeric(sa, addr, host, hostlen, flags) + const struct sockaddr *sa; + const char *addr; + char *host; + size_t hostlen; + int flags; +{ + int numaddrlen; + char numaddr[512]; + + if (inet_ntop(AF_INET6, addr, numaddr, sizeof(numaddr)) + == NULL) + return ENI_SYSTEM; + + numaddrlen = strlen(numaddr); + if (numaddrlen + 1 > hostlen) /* don't forget terminator */ + return ENI_MEMORY; + strcpy(host, numaddr); + +#ifdef NI_WITHSCOPEID + if ( +#ifdef DONT_OPAQUE_SCOPEID + (IN6_IS_ADDR_LINKLOCAL((struct in6_addr *)addr) || + IN6_IS_ADDR_MULTICAST((struct in6_addr *)addr)) && +#endif + ((const struct sockaddr_in6 *)sa)->sin6_scope_id) { +#ifndef ALWAYS_WITHSCOPE + if (flags & NI_WITHSCOPEID) +#endif /* !ALWAYS_WITHSCOPE */ + { + char scopebuf[MAXHOSTNAMELEN]; + int scopelen; + + /* ip6_sa2str never fails */ + scopelen = ip6_sa2str((const struct sockaddr_in6 *)sa, + scopebuf, sizeof(scopebuf), + flags); + if (scopelen + 1 + numaddrlen + 1 > hostlen) + return ENI_MEMORY; + /* + * construct <numeric-addr><delim><scopeid> + */ + memcpy(host + numaddrlen + 1, scopebuf, + scopelen); + host[numaddrlen] = SCOPE_DELIMITER; + host[numaddrlen + 1 + scopelen] = '\0'; + } + } +#endif /* NI_WITHSCOPEID */ + + return 0; +} + +/* ARGSUSED */ +static int +ip6_sa2str(sa6, buf, bufsiz, flags) + const struct sockaddr_in6 *sa6; + char *buf; + size_t bufsiz; + int flags; +{ + unsigned int ifindex = (unsigned int)sa6->sin6_scope_id; + const struct in6_addr *a6 = &sa6->sin6_addr; + +#ifdef NI_NUMERICSCOPE + if (flags & NI_NUMERICSCOPE) { + return(snprintf(buf, bufsiz, "%d", sa6->sin6_scope_id)); + } +#endif + + /* if_indextoname() does not take buffer size. not a good api... */ + if ((IN6_IS_ADDR_LINKLOCAL(a6) || IN6_IS_ADDR_MC_LINKLOCAL(a6)) && + bufsiz >= IF_NAMESIZE) { + char *p = if_indextoname(ifindex, buf); + if (p) { + return(strlen(p)); + } + } + + /* last resort */ + return(snprintf(buf, bufsiz, "%u", sa6->sin6_scope_id)); +} +#endif /* INET6 */ diff --git a/newlib/libc/sys/linux/net/getnetbydns.c b/newlib/libc/sys/linux/net/getnetbydns.c new file mode 100644 index 000000000..2cc4fce54 --- /dev/null +++ b/newlib/libc/sys/linux/net/getnetbydns.c @@ -0,0 +1,327 @@ +/*- + * Copyright (c) 1985, 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * - + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + * - + * --Copyright-- + */ +/* Portions Copyright (c) 1993 Carlos Leandro and Rui Salgueiro + * Dep. Matematica Universidade de Coimbra, Portugal, Europe + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)gethostnamadr.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> +#include <sys/types.h> + +#include <sys/param.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> + +#include <stdio.h> +#include <netdb.h> +#include <resolv.h> +#include <ctype.h> +#include <string.h> +#include <unistd.h> +#include <syslog.h> +#include <stdarg.h> +#include <nsswitch.h> + +#include "res_config.h" + +extern int h_errno; + +#define BYADDR 0 +#define BYNAME 1 +#define MAXALIASES 35 + +#if PACKETSZ > 1024 +#define MAXPACKET PACKETSZ +#else +#define MAXPACKET 1024 +#endif + +typedef union { + HEADER hdr; + u_char buf[MAXPACKET]; +} querybuf; + +typedef union { + long al; + char ac; +} align; + +static struct netent * +getnetanswer(answer, anslen, net_i) + querybuf *answer; + int anslen; + int net_i; +{ + + HEADER *hp; + u_char *cp; + int n; + u_char *eom; + int type, class, buflen, ancount, qdcount, haveanswer, i, nchar; + char aux1[MAXHOSTNAMELEN], aux2[MAXHOSTNAMELEN], ans[MAXHOSTNAMELEN]; + char *in, *st, *pauxt, *bp, **ap; + char *paux1 = &aux1[0], *paux2 = &aux2[0], flag = 0; +static struct netent net_entry; +static char *net_aliases[MAXALIASES], netbuf[PACKETSZ]; + + /* + * find first satisfactory answer + * + * answer --> +------------+ ( MESSAGE ) + * | Header | + * +------------+ + * | Question | the question for the name server + * +------------+ + * | Answer | RRs answering the question + * +------------+ + * | Authority | RRs pointing toward an authority + * | Additional | RRs holding additional information + * +------------+ + */ + eom = answer->buf + anslen; + hp = &answer->hdr; + ancount = ntohs(hp->ancount); /* #/records in the answer section */ + qdcount = ntohs(hp->qdcount); /* #/entries in the question section */ + bp = netbuf; + buflen = sizeof(netbuf); + cp = answer->buf + HFIXEDSZ; + if (!qdcount) { + if (hp->aa) + h_errno = HOST_NOT_FOUND; + else + h_errno = TRY_AGAIN; + return (NULL); + } + while (qdcount-- > 0) + cp += __dn_skipname(cp, eom) + QFIXEDSZ; + ap = net_aliases; + *ap = NULL; + net_entry.n_aliases = net_aliases; + haveanswer = 0; + while (--ancount >= 0 && cp < eom) { + n = dn_expand(answer->buf, eom, cp, bp, buflen); + if ((n < 0) || !res_dnok(bp)) + break; + cp += n; + ans[0] = '\0'; + (void)strncpy(&ans[0], bp, sizeof(ans) - 1); + ans[sizeof(ans) - 1] = '\0'; + GETSHORT(type, cp); + GETSHORT(class, cp); + cp += INT32SZ; /* TTL */ + GETSHORT(n, cp); + if (class == C_IN && type == T_PTR) { + n = dn_expand(answer->buf, eom, cp, bp, buflen); + if ((n < 0) || !res_hnok(bp)) { + cp += n; + return (NULL); + } + cp += n; + *ap++ = bp; + bp += strlen(bp) + 1; + net_entry.n_addrtype = + (class == C_IN) ? AF_INET : AF_UNSPEC; + haveanswer++; + } + } + if (haveanswer) { + *ap = NULL; + switch (net_i) { + case BYADDR: + net_entry.n_name = *net_entry.n_aliases; + net_entry.n_net = 0L; + break; + case BYNAME: + in = *net_entry.n_aliases; + net_entry.n_name = &ans[0]; + aux2[0] = '\0'; + for (i = 0; i < 4; i++) { + for (st = in, nchar = 0; + *st != '.'; + st++, nchar++) + ; + if (nchar != 1 || *in != '0' || flag) { + flag = 1; + (void)strncpy(paux1, + (i==0) ? in : in-1, + (i==0) ?nchar : nchar+1); + paux1[(i==0) ? nchar : nchar+1] = '\0'; + pauxt = paux2; + paux2 = strcat(paux1, paux2); + paux1 = pauxt; + } + in = ++st; + } + net_entry.n_net = inet_network(paux2); + break; + } + net_entry.n_aliases++; + return (&net_entry); + } + h_errno = TRY_AGAIN; + return (NULL); +} + +int +_dns_getnetbyaddr(void *rval, void *cb_data, va_list ap) +{ + unsigned long net; + int net_type; + unsigned int netbr[4]; + int nn, anslen; + querybuf buf; + char qbuf[MAXDNAME]; + unsigned long net2; + struct netent *net_entry; + + net = va_arg(ap, unsigned long); + net_type = va_arg(ap, int); + + *(struct netent **)rval = NULL; + + if (net_type != AF_INET) + return NS_UNAVAIL; + + for (nn = 4, net2 = net; net2; net2 >>= 8) + netbr[--nn] = net2 & 0xff; + switch (nn) { + case 3: /* Class A */ + sprintf(qbuf, "0.0.0.%u.in-addr.arpa", netbr[3]); + break; + case 2: /* Class B */ + sprintf(qbuf, "0.0.%u.%u.in-addr.arpa", netbr[3], netbr[2]); + break; + case 1: /* Class C */ + sprintf(qbuf, "0.%u.%u.%u.in-addr.arpa", netbr[3], netbr[2], + netbr[1]); + break; + case 0: /* Class D - E */ + sprintf(qbuf, "%u.%u.%u.%u.in-addr.arpa", netbr[3], netbr[2], + netbr[1], netbr[0]); + break; + } + anslen = res_query(qbuf, C_IN, T_PTR, (u_char *)&buf, sizeof(buf)); + if (anslen < 0) { +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf("res_query failed\n"); +#endif + return NS_UNAVAIL; + } + net_entry = getnetanswer(&buf, anslen, BYADDR); + if (net_entry) { + unsigned u_net = net; /* maybe net should be unsigned ? */ + + /* Strip trailing zeros */ + while ((u_net & 0xff) == 0 && u_net != 0) + u_net >>= 8; + net_entry->n_net = u_net; + *(struct netent **)rval = net_entry; + return NS_SUCCESS; + } + return NS_NOTFOUND; +} + +int +_dns_getnetbyname(void *rval, void *cb_data, va_list ap) +{ + const char *net; + int anslen; + querybuf buf; + char qbuf[MAXDNAME]; + + net = va_arg(ap, const char *); + + *(struct netent**)rval = NULL; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + h_errno = NETDB_INTERNAL; + return NS_UNAVAIL; + } + strncpy(qbuf, net, sizeof(qbuf) - 1); + qbuf[sizeof(qbuf) - 1] = '\0'; + anslen = res_search(qbuf, C_IN, T_PTR, (u_char *)&buf, sizeof(buf)); + if (anslen < 0) { +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf("res_query failed\n"); +#endif + return NS_UNAVAIL; + } + *(struct netent**)rval = getnetanswer(&buf, anslen, BYNAME); + return (*(struct netent**)rval != NULL) ? NS_SUCCESS : NS_NOTFOUND; +} + +void +_setnetdnsent(stayopen) + int stayopen; +{ + if (stayopen) + _res.options |= RES_STAYOPEN | RES_USEVC; +} + +void +_endnetdnsent() +{ + _res.options &= ~(RES_STAYOPEN | RES_USEVC); + res_close(); +} diff --git a/newlib/libc/sys/linux/net/getnetbyht.c b/newlib/libc/sys/linux/net/getnetbyht.c new file mode 100644 index 000000000..8e4a16f1c --- /dev/null +++ b/newlib/libc/sys/linux/net/getnetbyht.c @@ -0,0 +1,183 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* Portions Copyright (c) 1993 Carlos Leandro and Rui Salgueiro + * Dep. Matematica Universidade de Coimbra, Portugal, Europe + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * from getnetent.c 1.1 (Coimbra) 93/06/02 + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getnetent.c 8.1 (Berkeley) 6/4/93"; +static char orig_rcsid[] = "From: Id: getnetent.c,v 8.4 1997/06/01 20:34:37 vixie Exp"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> +#include <netdb.h> +#include <stdio.h> +#include <string.h> +#include <stdarg.h> +#include <nsswitch.h> + +#define MAXALIASES 35 + +static FILE *netf; +static char line[BUFSIZ+1]; +static struct netent net; +static char *net_aliases[MAXALIASES]; +static int _net_stayopen; + +void +_setnethtent(f) + int f; +{ + + if (netf == NULL) + netf = fopen(_PATH_NETWORKS, "r" ); + else + rewind(netf); + _net_stayopen |= f; +} + +void +_endnethtent() +{ + + if (netf) { + fclose(netf); + netf = NULL; + } + _net_stayopen = 0; +} + +struct netent * +getnetent() +{ + char *p; + char *cp, **q; + + if (netf == NULL && (netf = fopen(_PATH_NETWORKS, "r" )) == NULL) + return (NULL); +again: + p = fgets(line, sizeof line, netf); + if (p == NULL) + return (NULL); + if (*p == '#') + goto again; + cp = strpbrk(p, "#\n"); + if (cp == NULL) + goto again; + *cp = '\0'; + net.n_name = p; + cp = strpbrk(p, " \t"); + if (cp == NULL) + goto again; + *cp++ = '\0'; + while (*cp == ' ' || *cp == '\t') + cp++; + p = strpbrk(cp, " \t"); + if (p != NULL) + *p++ = '\0'; + net.n_net = inet_network(cp); + net.n_addrtype = AF_INET; + q = net.n_aliases = net_aliases; + if (p != NULL) + cp = p; + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (q < &net_aliases[MAXALIASES - 1]) + *q++ = cp; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + } + *q = NULL; + return (&net); +} + +int +_ht_getnetbyname(void *rval, void *cb_data, va_list ap) +{ + const char *name; + struct netent *p; + char **cp; + + name = va_arg(ap, const char *); + + setnetent(_net_stayopen); + while ( (p = getnetent()) ) { + if (strcasecmp(p->n_name, name) == 0) + break; + for (cp = p->n_aliases; *cp != 0; cp++) + if (strcasecmp(*cp, name) == 0) + goto found; + } +found: + if (!_net_stayopen) + endnetent(); + *(struct netent **)rval = p; + return (p != NULL) ? NS_SUCCESS : NS_NOTFOUND; +} + +int +_ht_getnetbyaddr(void *rval, void *cb_data, va_list ap) +{ + unsigned long net; + int type; + struct netent *p; + + net = va_arg(ap, unsigned long); + type = va_arg(ap, int); + + setnetent(_net_stayopen); + while ( (p = getnetent()) ) + if (p->n_addrtype == type && p->n_net == net) + break; + if (!_net_stayopen) + endnetent(); + *(struct netent **)rval = p; + return (p != NULL) ? NS_SUCCESS : NS_NOTFOUND; +} diff --git a/newlib/libc/sys/linux/net/getnetbynis.c b/newlib/libc/sys/linux/net/getnetbynis.c new file mode 100644 index 000000000..6d222e60f --- /dev/null +++ b/newlib/libc/sys/linux/net/getnetbynis.c @@ -0,0 +1,190 @@ +/*- + * Copyright (c) 1994, Garrett Wollman + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> +#include <sys/types.h> + +#include <sys/param.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <netdb.h> +#include <stdio.h> +#include <stdlib.h> +#include <ctype.h> +#include <errno.h> +#include <string.h> +#include <stdarg.h> +#include <nsswitch.h> +#include <arpa/nameser.h> +#ifdef YP +#include <rpc/rpc.h> +#include <rpcsvc/yp_prot.h> +#include <rpcsvc/ypclnt.h> +#endif + +#define MAXALIASES 35 +#define MAXADDRS 35 + +#ifdef YP +static char *host_aliases[MAXALIASES]; + +static struct netent * +_getnetbynis(const char *name, char *map, int af) +{ + char *cp, **q; + static char *result; + int resultlen; + static struct netent h; + static char *domain = (char *)NULL; + static char ypbuf[YPMAXRECORD + 2]; + + switch(af) { + case AF_INET: + break; + default: + case AF_INET6: + errno = EAFNOSUPPORT; + return NULL; + } + + if (domain == (char *)NULL) + if (yp_get_default_domain (&domain)) + return (NULL); + + if (yp_match(domain, map, name, strlen(name), &result, &resultlen)) + return (NULL); + + bcopy((char *)result, (char *)&ypbuf, resultlen); + ypbuf[resultlen] = '\0'; + free(result); + result = (char *)&ypbuf; + + if ((cp = index(result, '\n'))) + *cp = '\0'; + + cp = strpbrk(result, " \t"); + *cp++ = '\0'; + h.n_name = result; + + while (*cp == ' ' || *cp == '\t') + cp++; + + h.n_net = inet_network(cp); + h.n_addrtype = AF_INET; + + q = h.n_aliases = host_aliases; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (q < &host_aliases[MAXALIASES - 1]) + *q++ = cp; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + } + *q = NULL; + return (&h); +} +#endif /* YP */ + +int +_nis_getnetbyname(void *rval, void *cb_data, va_list ap) +{ +#ifdef YP + const char *name; + + name = va_arg(ap, const char *); + + *(struct netent **)rval = _getnetbynis(name, "networks.byname", AF_INET); + return (*(struct netent **)rval != NULL) ? NS_SUCCESS : NS_NOTFOUND; +#else + return NS_UNAVAIL; +#endif + +} + +int +_nis_getnetbyaddr(void *rval, void *cb_data, va_list ap) +{ +#ifdef YP + unsigned long addr; + int af; + char *str, *cp; + unsigned long net2; + int nn; + unsigned int netbr[4]; + char buf[MAXDNAME]; + + addr = va_arg(ap, unsigned long); + af = va_arg(ap, int); + + *(struct netent **)rval = NULL; + + if (af != AF_INET) { + errno = EAFNOSUPPORT; + return NS_UNAVAIL; + } + + for (nn = 4, net2 = addr; net2; net2 >>= 8) { + netbr[--nn] = net2 & 0xff; + } + + switch (nn) { + case 3: /* Class A */ + sprintf(buf, "%u", netbr[3]); + break; + case 2: /* Class B */ + sprintf(buf, "%u.%u", netbr[2], netbr[3]); + break; + case 1: /* Class C */ + sprintf(buf, "%u.%u.%u", netbr[1], netbr[2], netbr[3]); + break; + case 0: /* Class D - E */ + sprintf(buf, "%u.%u.%u.%u", netbr[0], netbr[1], + netbr[2], netbr[3]); + break; + } + + str = (char *)&buf; + cp = str + (strlen(str) - 2); + + while(!strcmp(cp, ".0")) { + *cp = '\0'; + cp = str + (strlen(str) - 2); + } + + *(struct netent **)rval = _getnetbynis(str, "networks.byaddr", af); + return (*(struct netent**)rval != NULL) ? NS_SUCCESS : NS_NOTFOUND; +#else + return NS_UNAVAIL; +#endif /* YP */ +} diff --git a/newlib/libc/sys/linux/net/getnetent.3 b/newlib/libc/sys/linux/net/getnetent.3 new file mode 100644 index 000000000..6801e9707 --- /dev/null +++ b/newlib/libc/sys/linux/net/getnetent.3 @@ -0,0 +1,172 @@ +.\" Copyright (c) 1983, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)getnetent.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD: src/lib/libc/net/getnetent.3,v 1.17 2002/01/14 16:59:01 ru Exp $ +.\" +.Dd June 4, 1993 +.Dt GETNETENT 3 +.Os +.Sh NAME +.Nm getnetent , +.Nm getnetbyaddr , +.Nm getnetbyname , +.Nm setnetent , +.Nm endnetent +.Nd get network entry +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In netdb.h +.Ft struct netent * +.Fn getnetent void +.Ft struct netent * +.Fn getnetbyname "const char *name" +.Ft struct netent * +.Fn getnetbyaddr "unsigned long net" "int type" +.Ft void +.Fn setnetent "int stayopen" +.Ft void +.Fn endnetent void +.Sh DESCRIPTION +The +.Fn getnetent , +.Fn getnetbyname , +and +.Fn getnetbyaddr +functions +each return a pointer to an object with the +following structure describing an internet network. +This structure contains either the information obtained +from the nameserver, +.Xr named 8 , +broken-out fields of a line in the network data base +.Pa /etc/networks , +or entries supplied by the +.Xr yp 8 +system. The order of the lookups is controlled by the +`networks' entry in +.Xr nsswitch.conf 5 . +.Pp +.Bd -literal -offset indent +struct netent { + char *n_name; /* official name of net */ + char **n_aliases; /* alias list */ + int n_addrtype; /* net number type */ + unsigned long n_net; /* net number */ +}; +.Ed +.Pp +The members of this structure are: +.Bl -tag -width n_addrtype +.It Fa n_name +The official name of the network. +.It Fa n_aliases +A zero terminated list of alternate names for the network. +.It Fa n_addrtype +The type of the network number returned; currently only AF_INET. +.It Fa n_net +The network number. Network numbers are returned in machine byte +order. +.El +.Pp +The +.Fn getnetent +function +reads the next line of the file, opening the file if necessary. +.Pp +The +.Fn setnetent +function +opens and rewinds the file. If the +.Fa stayopen +flag is non-zero, +the net data base will not be closed after each call to +.Fn getnetbyname +or +.Fn getnetbyaddr . +.Pp +The +.Fn endnetent +function +closes the file. +.Pp +The +.Fn getnetbyname +function +and +.Fn getnetbyaddr +sequentially search from the beginning +of the file until a matching +net name or +net address and type is found, +or until +.Dv EOF +is encountered. +The +.Fa type +must be +.Dv AF_INET . +Network numbers are supplied in host order. +.Sh FILES +.Bl -tag -width /etc/nsswitch.conf -compact +.It Pa /etc/networks +.It Pa /etc/nsswitch.conf +.It Pa /etc/resolv.conf +.El +.Sh DIAGNOSTICS +Null pointer +(0) returned on +.Dv EOF +or error. +.Sh SEE ALSO +.Xr networks 5 +.Pp +.%T RFC 1101 +.Sh HISTORY +The +.Fn getnetent , +.Fn getnetbyaddr , +.Fn getnetbyname , +.Fn setnetent , +and +.Fn endnetent +functions appeared in +.Bx 4.2 . +.Sh BUGS +The data space used by +these functions is static; if future use requires the data, it should be +copied before any subsequent calls to these functions overwrite it. +Only Internet network +numbers are currently understood. +Expecting network numbers to fit +in no more than 32 bits is probably +naive. diff --git a/newlib/libc/sys/linux/net/getnetnamadr.c b/newlib/libc/sys/linux/net/getnetnamadr.c new file mode 100644 index 000000000..180ab14e2 --- /dev/null +++ b/newlib/libc/sys/linux/net/getnetnamadr.c @@ -0,0 +1,113 @@ +/*- + * Copyright (c) 1994, Garrett Wollman + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> +#include <sys/types.h> + +#include <sys/param.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <netdb.h> +#include <stdio.h> +#include <ctype.h> +#include <string.h> +#include <stdarg.h> +#include <nsswitch.h> + +extern int _ht_getnetbyname(void *, void *, va_list); +extern int _dns_getnetbyname(void *, void *, va_list); +extern int _nis_getnetbyname(void *, void *, va_list); +extern int _ht_getnetbyaddr(void *, void *, va_list); +extern int _dns_getnetbyaddr(void *, void *, va_list); +extern int _nis_getnetbyaddr(void *, void *, va_list); + +/* Network lookup order if nsswitch.conf is broken or nonexistant */ +static const ns_src default_src[] = { + { NSSRC_FILES, NS_SUCCESS }, + { NSSRC_DNS, NS_SUCCESS }, + { 0 } +}; + +struct netent * +getnetbyname(const char *name) +{ + struct netent *hp = 0; + int rval; + + + static const ns_dtab dtab[] = { + NS_FILES_CB(_ht_getnetbyname, NULL) + { NSSRC_DNS, _dns_getnetbyname, NULL }, + NS_NIS_CB(_nis_getnetbyname, NULL) /* force -DHESIOD */ + { 0 } + }; + + rval = nsdispatch((void *)&hp, dtab, NSDB_NETWORKS, "getnetbyname", + default_src, name); + + if (rval != NS_SUCCESS) + return NULL; + else + return hp; +} + +struct netent * +getnetbyaddr(u_long addr, int af) +{ + struct netent *hp = 0; + int rval; + + static const ns_dtab dtab[] = { + NS_FILES_CB(_ht_getnetbyaddr, NULL) + { NSSRC_DNS, _dns_getnetbyaddr, NULL }, + NS_NIS_CB(_nis_getnetbyaddr, NULL) /* force -DHESIOD */ + { 0 } + }; + + rval = nsdispatch((void *)&hp, dtab, NSDB_NETWORKS, "getnetbyaddr", + default_src, addr, af); + + if (rval != NS_SUCCESS) + return NULL; + else + return hp; +} + +void +setnetent(stayopen) + int stayopen; +{ + _setnethtent(stayopen); + _setnetdnsent(stayopen); +} + +void +endnetent() +{ + _endnethtent(); + _endnetdnsent(); +} diff --git a/newlib/libc/sys/linux/net/getproto.c b/newlib/libc/sys/linux/net/getproto.c new file mode 100644 index 000000000..937c30732 --- /dev/null +++ b/newlib/libc/sys/linux/net/getproto.c @@ -0,0 +1,57 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getproto.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <netdb.h> + +extern int _proto_stayopen; + +struct protoent * +getprotobynumber(proto) + int proto; +{ + struct protoent *p; + + setprotoent(_proto_stayopen); + while ( (p = getprotoent()) ) + if (p->p_proto == proto) + break; + if (!_proto_stayopen) + endprotoent(); + return (p); +} diff --git a/newlib/libc/sys/linux/net/getprotoent.3 b/newlib/libc/sys/linux/net/getprotoent.3 new file mode 100644 index 000000000..18b56541b --- /dev/null +++ b/newlib/libc/sys/linux/net/getprotoent.3 @@ -0,0 +1,149 @@ +.\" Copyright (c) 1983, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)getprotoent.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD: src/lib/libc/net/getprotoent.3,v 1.8 2001/10/01 16:08:55 ru Exp $ +.\" +.Dd June 4, 1993 +.Dt GETPROTOENT 3 +.Os +.Sh NAME +.Nm getprotoent , +.Nm getprotobynumber , +.Nm getprotobyname , +.Nm setprotoent , +.Nm endprotoent +.Nd get protocol entry +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In netdb.h +.Ft struct protoent * +.Fn getprotoent void +.Ft struct protoent * +.Fn getprotobyname "const char *name" +.Ft struct protoent * +.Fn getprotobynumber "int proto" +.Ft void +.Fn setprotoent "int stayopen" +.Ft void +.Fn endprotoent void +.Sh DESCRIPTION +The +.Fn getprotoent , +.Fn getprotobyname , +and +.Fn getprotobynumber +functions +each return a pointer to an object with the +following structure +containing the broken-out +fields of a line in the network protocol data base, +.Pa /etc/protocols . +.Bd -literal -offset indent +.Pp +struct protoent { + char *p_name; /* official name of protocol */ + char **p_aliases; /* alias list */ + int p_proto; /* protocol number */ +}; +.Ed +.Pp +The members of this structure are: +.Bl -tag -width p_aliases +.It Fa p_name +The official name of the protocol. +.It Fa p_aliases +A zero terminated list of alternate names for the protocol. +.It Fa p_proto +The protocol number. +.El +.Pp +The +.Fn getprotoent +function +reads the next line of the file, opening the file if necessary. +.Pp +The +.Fn setprotoent +function +opens and rewinds the file. If the +.Fa stayopen +flag is non-zero, +the net data base will not be closed after each call to +.Fn getprotobyname +or +.Fn getprotobynumber . +.Pp +The +.Fn endprotoent +function +closes the file. +.Pp +The +.Fn getprotobyname +function +and +.Fn getprotobynumber +sequentially search from the beginning +of the file until a matching +protocol name or +protocol number is found, +or until +.Dv EOF +is encountered. +.Sh RETURN VALUES +Null pointer +(0) returned on +.Dv EOF +or error. +.Sh FILES +.Bl -tag -width /etc/protocols -compact +.It Pa /etc/protocols +.El +.Sh SEE ALSO +.Xr protocols 5 +.Sh HISTORY +The +.Fn getprotoent , +.Fn getprotobynumber , +.Fn getprotobyname , +.Fn setprotoent , +and +.Fn endprotoent +functions appeared in +.Bx 4.2 . +.Sh BUGS +These functions use a static data space; +if the data is needed for future use, it should be +copied before any subsequent calls overwrite it. +Only the Internet +protocols are currently understood. diff --git a/newlib/libc/sys/linux/net/getprotoent.c b/newlib/libc/sys/linux/net/getprotoent.c new file mode 100644 index 000000000..422eeacea --- /dev/null +++ b/newlib/libc/sys/linux/net/getprotoent.c @@ -0,0 +1,121 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getprotoent.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <sys/socket.h> +#include <netdb.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#define MAXALIASES 35 + +static FILE *protof = NULL; +static char line[BUFSIZ+1]; +static struct protoent proto; +static char *proto_aliases[MAXALIASES]; +int _proto_stayopen; + +void +setprotoent(f) + int f; +{ + if (protof == NULL) + protof = fopen(_PATH_PROTOCOLS, "r" ); + else + rewind(protof); + _proto_stayopen |= f; +} + +void +endprotoent() +{ + if (protof) { + fclose(protof); + protof = NULL; + } + _proto_stayopen = 0; +} + +struct protoent * +getprotoent() +{ + char *p; + char *cp, **q; + + if (protof == NULL && (protof = fopen(_PATH_PROTOCOLS, "r" )) == NULL) + return (NULL); +again: + if ((p = fgets(line, BUFSIZ, protof)) == NULL) + return (NULL); + if (*p == '#') + goto again; + cp = strpbrk(p, "#\n"); + if (cp == NULL) + goto again; + *cp = '\0'; + proto.p_name = p; + cp = strpbrk(p, " \t"); + if (cp == NULL) + goto again; + *cp++ = '\0'; + while (*cp == ' ' || *cp == '\t') + cp++; + p = strpbrk(cp, " \t"); + if (p != NULL) + *p++ = '\0'; + proto.p_proto = atoi(cp); + q = proto.p_aliases = proto_aliases; + if (p != NULL) { + cp = p; + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (q < &proto_aliases[MAXALIASES - 1]) + *q++ = cp; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + } + } + *q = NULL; + return (&proto); +} diff --git a/newlib/libc/sys/linux/net/getprotoname.c b/newlib/libc/sys/linux/net/getprotoname.c new file mode 100644 index 000000000..f25883fe8 --- /dev/null +++ b/newlib/libc/sys/linux/net/getprotoname.c @@ -0,0 +1,64 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getprotoname.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <netdb.h> +#include <string.h> + +extern int _proto_stayopen; + +struct protoent * +getprotobyname(name) + const char *name; +{ + struct protoent *p; + char **cp; + + setprotoent(_proto_stayopen); + while ( (p = getprotoent()) ) { + if (strcmp(p->p_name, name) == 0) + break; + for (cp = p->p_aliases; *cp != 0; cp++) + if (strcmp(*cp, name) == 0) + goto found; + } +found: + if (!_proto_stayopen) + endprotoent(); + return (p); +} diff --git a/newlib/libc/sys/linux/net/getservbyname.c b/newlib/libc/sys/linux/net/getservbyname.c new file mode 100644 index 000000000..ced03d617 --- /dev/null +++ b/newlib/libc/sys/linux/net/getservbyname.c @@ -0,0 +1,81 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getservbyname.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <netdb.h> +#include <string.h> + +extern int _serv_stayopen; + +struct servent * +getservbyname(name, proto) + const char *name, *proto; +{ + struct servent *p; + char **cp; + +#ifdef YP + extern char *___getservbyname_yp; + extern char *___getservbyproto_yp; + + ___getservbyname_yp = (char *)name; + ___getservbyproto_yp = (char *)proto; +#endif + + setservent(_serv_stayopen); + while ( (p = getservent()) ) { + if (strcmp(name, p->s_name) == 0) + goto gotname; + for (cp = p->s_aliases; *cp; cp++) + if (strcmp(name, *cp) == 0) + goto gotname; + continue; +gotname: + if (proto == 0 || strcmp(p->s_proto, proto) == 0) + break; + } + if (!_serv_stayopen) + endservent(); + +#ifdef YP + ___getservbyname_yp = NULL; + ___getservbyproto_yp = NULL; +#endif + + return (p); +} diff --git a/newlib/libc/sys/linux/net/getservbyport.c b/newlib/libc/sys/linux/net/getservbyport.c new file mode 100644 index 000000000..88b684da4 --- /dev/null +++ b/newlib/libc/sys/linux/net/getservbyport.c @@ -0,0 +1,76 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getservbyport.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <netdb.h> +#include <string.h> + +extern int _serv_stayopen; + +struct servent * +getservbyport(port, proto) + int port; + const char *proto; +{ + struct servent *p; + +#ifdef YP + extern int ___getservbyport_yp; + extern char *___getservbyproto_yp; + + ___getservbyport_yp = port; + ___getservbyproto_yp = (char *)proto; +#endif + + setservent(_serv_stayopen); + while ( (p = getservent()) ) { + if (p->s_port != port) + continue; + if (proto == 0 || strcmp(p->s_proto, proto) == 0) + break; + } + if (!_serv_stayopen) + endservent(); + +#ifdef YP + ___getservbyport_yp = 0; + ___getservbyproto_yp = NULL; +#endif + + return (p); +} diff --git a/newlib/libc/sys/linux/net/getservent.3 b/newlib/libc/sys/linux/net/getservent.3 new file mode 100644 index 000000000..3d398bdb1 --- /dev/null +++ b/newlib/libc/sys/linux/net/getservent.3 @@ -0,0 +1,158 @@ +.\" Copyright (c) 1983, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" From: @(#)getservent.3 8.3 (Berkeley) 1/12/94 +.\" $FreeBSD: src/lib/libc/net/getservent.3,v 1.12 2001/10/01 16:08:55 ru Exp $ +.\" +.Dd July 9, 1995 +.Dt GETSERVENT 3 +.Os +.Sh NAME +.Nm getservent , +.Nm getservbyport , +.Nm getservbyname , +.Nm setservent , +.Nm endservent +.Nd get service entry +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In netdb.h +.Ft struct servent * +.Fn getservent +.Ft struct servent * +.Fn getservbyname "const char *name" "const char *proto" +.Ft struct servent * +.Fn getservbyport "int port" "const char *proto" +.Ft void +.Fn setservent "int stayopen" +.Ft void +.Fn endservent void +.Sh DESCRIPTION +The +.Fn getservent , +.Fn getservbyname , +and +.Fn getservbyport +functions +each return a pointer to an object with the +following structure +containing the broken-out +fields of a line in the network services data base, +.Pa /etc/services . +.Bd -literal -offset indent +struct servent { + char *s_name; /* official name of service */ + char **s_aliases; /* alias list */ + int s_port; /* port service resides at */ + char *s_proto; /* protocol to use */ +}; +.Ed +.Pp +The members of this structure are: +.Bl -tag -width s_aliases +.It Fa s_name +The official name of the service. +.It Fa s_aliases +A zero terminated list of alternate names for the service. +.It Fa s_port +The port number at which the service resides. +Port numbers are returned in network byte order. +.It Fa s_proto +The name of the protocol to use when contacting the +service. +.El +.Pp +The +.Fn getservent +function +reads the next line of the file, opening the file if necessary. +.Pp +The +.Fn setservent +function +opens and rewinds the file. If the +.Fa stayopen +flag is non-zero, +the net data base will not be closed after each call to +.Fn getservbyname +or +.Fn getservbyport . +.Pp +The +.Fn endservent +function +closes the file. +.Pp +The +.Fn getservbyname +and +.Fn getservbyport +functions +sequentially search from the beginning +of the file until a matching +protocol name or +port number (which must be specified in +network byte order) is found, +or until +.Dv EOF +is encountered. +If a protocol name is also supplied (non- +.Dv NULL ) , +searches must also match the protocol. +.Sh FILES +.Bl -tag -width /etc/services -compact +.It Pa /etc/services +.El +.Sh DIAGNOSTICS +Null pointer +(0) returned on +.Dv EOF +or error. +.Sh SEE ALSO +.Xr getprotoent 3 , +.Xr services 5 +.Sh HISTORY +The +.Fn getservent , +.Fn getservbyport , +.Fn getservbyname , +.Fn setservent , +and +.Fn endservent +functions appeared in +.Bx 4.2 . +.Sh BUGS +These functions use static data storage; +if the data is needed for future use, it should be +copied before any subsequent calls overwrite it. +Expecting port numbers to fit in a 32 bit +quantity is probably naive. diff --git a/newlib/libc/sys/linux/net/getservent.c b/newlib/libc/sys/linux/net/getservent.c new file mode 100644 index 000000000..1c26df75c --- /dev/null +++ b/newlib/libc/sys/linux/net/getservent.c @@ -0,0 +1,282 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getservent.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> +#include <machine/endian.h> + +#include <sys/types.h> +#include <sys/socket.h> +#include <arpa/inet.h> +#include <netdb.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#ifdef YP +#include <rpc/rpc.h> +#include <rpcsvc/yp_prot.h> +#include <rpcsvc/ypclnt.h> +static int serv_stepping_yp = 0; +extern int _yp_check( char ** ); +#endif + + +#define MAXALIASES 35 + +static FILE *servf = NULL; +static char line[BUFSIZ+1]; +static struct servent serv; +static char *serv_aliases[MAXALIASES]; +int _serv_stayopen; + +#ifdef YP +char *___getservbyname_yp = NULL; +char *___getservbyproto_yp = NULL; +int ___getservbyport_yp = 0; +static char *yp_domain = NULL; + +static int +_getservbyport_yp(line) + char *line; +{ + char *result; + int resultlen; + char buf[YPMAXRECORD + 2]; + int rv; + + snprintf(buf, sizeof(buf), "%d/%s", ntohs(___getservbyport_yp), + ___getservbyproto_yp); + + ___getservbyport_yp = 0; + ___getservbyproto_yp = NULL; + + if(!yp_domain) { + if(yp_get_default_domain(&yp_domain)) + return (0); + } + + /* + * We have to be a little flexible here. Ideally you're supposed + * to have both a services.byname and a services.byport map, but + * some systems have only services.byname. FreeBSD cheats a little + * by putting the services.byport information in the same map as + * services.byname so that either case will work. We allow for both + * possibilities here: if there is no services.byport map, we try + * services.byname instead. + */ + if ((rv = yp_match(yp_domain, "services.byport", buf, strlen(buf), + &result, &resultlen))) { + if (rv == YPERR_MAP) { + if (yp_match(yp_domain, "services.byname", buf, + strlen(buf), &result, &resultlen)) + return(0); + } else + return(0); + } + + /* getservent() expects lines terminated with \n -- make it happy */ + snprintf(line, BUFSIZ, "%.*s\n", resultlen, result); + + free(result); + return(1); +} + +static int +_getservbyname_yp(line) + char *line; +{ + char *result; + int resultlen; + char buf[YPMAXRECORD + 2]; + + if(!yp_domain) { + if(yp_get_default_domain(&yp_domain)) + return (0); + } + + snprintf(buf, sizeof(buf), "%s/%s", ___getservbyname_yp, + ___getservbyproto_yp); + + ___getservbyname_yp = 0; + ___getservbyproto_yp = NULL; + + if (yp_match(yp_domain, "services.byname", buf, strlen(buf), + &result, &resultlen)) { + return(0); + } + + /* getservent() expects lines terminated with \n -- make it happy */ + snprintf(line, BUFSIZ, "%.*s\n", resultlen, result); + + free(result); + return(1); +} + +static int +_getservent_yp(line) + char *line; +{ + static char *key = NULL; + static int keylen; + char *lastkey, *result; + int resultlen; + int rv; + + if(!yp_domain) { + if(yp_get_default_domain(&yp_domain)) + return (0); + } + + if (!serv_stepping_yp) { + if (key) + free(key); + if ((rv = yp_first(yp_domain, "services.byname", &key, &keylen, + &result, &resultlen))) { + serv_stepping_yp = 0; + return(0); + } + serv_stepping_yp = 1; + } else { + lastkey = key; + rv = yp_next(yp_domain, "services.byname", key, keylen, &key, + &keylen, &result, &resultlen); + free(lastkey); + if (rv) { + serv_stepping_yp = 0; + return (0); + } + } + + /* getservent() expects lines terminated with \n -- make it happy */ + snprintf(line, BUFSIZ, "%.*s\n", resultlen, result); + + free(result); + + return(1); +} +#endif + +void +setservent(f) + int f; +{ + if (servf == NULL) + servf = fopen(_PATH_SERVICES, "r" ); + else + rewind(servf); + _serv_stayopen |= f; +} + +void +endservent() +{ + if (servf) { + fclose(servf); + servf = NULL; + } + _serv_stayopen = 0; +} + +struct servent * +getservent() +{ + char *p; + char *cp, **q; + +#ifdef YP + if (serv_stepping_yp && _getservent_yp(line)) { + p = (char *)&line; + goto unpack; + } +tryagain: +#endif + if (servf == NULL && (servf = fopen(_PATH_SERVICES, "r" )) == NULL) + return (NULL); +again: + if ((p = fgets(line, BUFSIZ, servf)) == NULL) + return (NULL); +#ifdef YP + if (*p == '+' && _yp_check(NULL)) { + if (___getservbyname_yp != NULL) { + if (!_getservbyname_yp(line)) + goto tryagain; + } + else if (___getservbyport_yp != 0) { + if (!_getservbyport_yp(line)) + goto tryagain; + } + else if (!_getservent_yp(line)) + goto tryagain; + } +unpack: +#endif + if (*p == '#') + goto again; + cp = strpbrk(p, "#\n"); + if (cp == NULL) + goto again; + *cp = '\0'; + serv.s_name = p; + p = strpbrk(p, " \t"); + if (p == NULL) + goto again; + *p++ = '\0'; + while (*p == ' ' || *p == '\t') + p++; + cp = strpbrk(p, ",/"); + if (cp == NULL) + goto again; + *cp++ = '\0'; + serv.s_port = htons((u_short)atoi(p)); + serv.s_proto = cp; + q = serv.s_aliases = serv_aliases; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + while (cp && *cp) { + if (*cp == ' ' || *cp == '\t') { + cp++; + continue; + } + if (q < &serv_aliases[MAXALIASES - 1]) + *q++ = cp; + cp = strpbrk(cp, " \t"); + if (cp != NULL) + *cp++ = '\0'; + } + *q = NULL; + return (&serv); +} diff --git a/newlib/libc/sys/linux/net/herror.c b/newlib/libc/sys/linux/net/herror.c new file mode 100644 index 000000000..0edec9890 --- /dev/null +++ b/newlib/libc/sys/linux/net/herror.c @@ -0,0 +1,103 @@ +/* + * Copyright (c) 1987, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Portions Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)herror.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include "namespace.h" +#include <sys/types.h> +#include <sys/uio.h> +#include <netdb.h> +#include <string.h> +#include <unistd.h> +#include "un-namespace.h" + +const char *h_errlist[] = { + "Resolver Error 0 (no error)", + "Unknown host", /* 1 HOST_NOT_FOUND */ + "Host name lookup failure", /* 2 TRY_AGAIN */ + "Unknown server error", /* 3 NO_RECOVERY */ + "No address associated with name", /* 4 NO_ADDRESS */ +}; +int h_nerr = { sizeof h_errlist / sizeof h_errlist[0] }; + +int h_errno; + +/* + * herror -- + * print the error indicated by the h_errno value. + */ +void +herror(s) + const char *s; +{ + char *ptr; + if (s && *s) { + write(STDERR_FILENO, s, strlen(s)); + write(STDERR_FILENO, ": ", 2); + } + ptr = (char *)hstrerror(h_errno); + write(STDERR_FILENO, ptr, strlen(ptr)); + write(STDERR_FILENO, "\n", 1); +} + +const char * +hstrerror(err) + int err; +{ + if (err < 0) + return ("Resolver internal error"); + else if (err < h_nerr) + return (h_errlist[err]); + return ("Unknown resolver error"); +} diff --git a/newlib/libc/sys/linux/net/hesiod.3 b/newlib/libc/sys/linux/net/hesiod.3 new file mode 100644 index 000000000..8de1f9247 --- /dev/null +++ b/newlib/libc/sys/linux/net/hesiod.3 @@ -0,0 +1,159 @@ +.\" $NetBSD: hesiod.3,v 1.1 1999/01/25 03:43:04 lukem Exp $ +.\" $FreeBSD: src/lib/libc/net/hesiod.3,v 1.3 2001/10/01 16:08:55 ru Exp $ +.\" +.\" from: #Id: hesiod.3,v 1.9.2.1 1997/01/03 21:02:23 ghudson Exp # +.\" +.\" Copyright 1988, 1996 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.Dd November 30, 1996 +.Dt HESIOD 3 +.Os +.Sh NAME +.Nm hesiod , +.Nm hesiod_init , +.Nm hesiod_resolve , +.Nm hesiod_free_list , +.Nm hesiod_to_bind , +.Nm hesiod_end +.Nd Hesiod name server interface library +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In hesiod.h +.Ft int +.Fn hesiod_init "void **context" +.Ft char ** +.Fn hesiod_resolve "void *context" "const char *name" "const char *type" +.Ft void +.Fn hesiod_free_list "void *context" "char **list" +.Ft char * +.Fn hesiod_to_bind "void *context" "const char *name" "const char *type" +.Ft void +.Fn hesiod_end "void *context" +.Sh DESCRIPTION +This family of functions allows you to perform lookups of Hesiod +information, which is stored as text records in the Domain Name +Service. +To perform lookups, you must first initialize a +.Fa context , +an opaque object which stores information used internally by the +library between calls. +.Fn hesiod_init +initializes a context, storing a pointer to the context in the +location pointed to by the +.Fa context +argument. +.Fn hesiod_end +frees the resources used by a context. +.Pp +.Fn hesiod_resolve +is the primary interface to the library. +If successful, it returns a +list of one or more strings giving the records matching +.Fa name +and +.Fa type . +The last element of the list is followed by a +.Dv NULL +pointer. +It is the +caller's responsibility to call +.Fn hesiod_free_list +to free the resources used by the returned list. +.Pp +.Fn hesiod_to_bind +converts +.Fa name +and +.Fa type +into the DNS name used by +.Fn hesiod_resolve . +It is the caller's responsibility to free the returned string using +.Fn free . +.Sh RETURN VALUES +.Rv -std hesiod_init +On failure, +.Fn hesiod_resolve +and +.Fn hesiod_to_bind +return +.Dv NULL +and set the global variable +.Va errno +to indicate the error. +.Sh ENVIRONMENT +.Bl -tag -width HESIOD_CONFIG +.It Ev HES_DOMAIN +If the environment variable +.Ev HES_DOMAIN +is set, it will override the domain in the Hesiod configuration file. +.It Ev HESIOD_CONFIG +If the environment variable +.Ev HESIOD_CONFIG +is set, it specifies the location of the Hesiod configuration file. +.El +.Sh SEE ALSO +.Xr hesiod.conf 5 , +.Xr named 8 +.Rs +.%T "Hesiod - Project Athena Technical Plan -- Name Service" +.Re +.Sh ERRORS +Hesiod calls may fail because of: +.Bl -tag -width Er +.It Bq Er ENOMEM +Insufficient memory was available to carry out the requested +operation. +.It Bq Er ENOEXEC +.Fn hesiod_init +failed because the Hesiod configuration file was invalid. +.It Bq Er ECONNREFUSED +.Fn hesiod_resolve +failed because no name server could be contacted to answer the query. +.It Bq Er EMSGSIZE +.Fn hesiod_resolve +or +.Fn hesiod_to_bind +failed because the query or response was too big to fit into the +packet buffers. +.It Bq Er ENOENT +.Fn hesiod_resolve +failed because the name server had no text records matching +.Fa name +and +.Fa type , +or +.Fn hesiod_to_bind +failed because the +.Fa name +argument had a domain extension which could not be resolved with type +.Dq rhs\-extension +in the local Hesiod domain. +.El +.Sh AUTHORS +.An Steve Dyer , +IBM/Project Athena +.An Greg Hudson , +MIT Team Athena +.Pp +Copyright 1987, 1988, 1995, 1996 by the Massachusetts Institute of Technology. +.Sh BUGS +The strings corresponding to the +.Va errno +values set by the Hesiod functions are not particularly indicative of +what went wrong, especially for +.Er ENOEXEC +and +.Er ENOENT . diff --git a/newlib/libc/sys/linux/net/hesiod.c b/newlib/libc/sys/linux/net/hesiod.c new file mode 100644 index 000000000..909c09440 --- /dev/null +++ b/newlib/libc/sys/linux/net/hesiod.c @@ -0,0 +1,600 @@ +/* $NetBSD: hesiod.c,v 1.9 1999/02/11 06:16:38 simonb Exp $ */ + +/* Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +/* Copyright 1996 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +/* This file is part of the hesiod library. It implements the core + * portion of the hesiod resolver. + * + * This file is loosely based on an interim version of hesiod.c from + * the BIND IRS library, which was in turn based on an earlier version + * of this file. Extensive changes have been made on each step of the + * path. + * + * This implementation is not truly thread-safe at the moment because + * it uses res_send() and accesses _res. + */ + +#include <sys/cdefs.h> + +#if 0 +static char *orig_rcsid = "$NetBSD: hesiod.c,v 1.9 1999/02/11 06:16:38 simonb Exp $"; +#endif +#include <sys/cdefs.h> +#include <sys/types.h> +#include <machine/endian.h> + +#include <sys/types.h> +#include <sys/param.h> +#include <netinet/in.h> +#include <arpa/nameser.h> + +#include <ctype.h> +#include <errno.h> +#include <hesiod.h> +#include <resolv.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +struct hesiod_p { + char *lhs; /* normally ".ns" */ + char *rhs; /* AKA the default hesiod domain */ + int classes[2]; /* The class search order. */ +}; + +#define MAX_HESRESP 1024 + +static int read_config_file(struct hesiod_p *, const char *); +static char **get_txt_records(int, const char *); +static int init_context(void); +static void translate_errors(void); + + +/* + * hesiod_init -- + * initialize a hesiod_p. + */ +int +hesiod_init(context) + void **context; +{ + struct hesiod_p *ctx; + const char *p, *configname; + + ctx = malloc(sizeof(struct hesiod_p)); + if (ctx) { + *context = ctx; + if (!issetugid()) + configname = getenv("HESIOD_CONFIG"); + else + configname = NULL; + if (!configname) + configname = _PATH_HESIOD_CONF; + if (read_config_file(ctx, configname) >= 0) { + /* + * The default rhs can be overridden by an + * environment variable. + */ + if (!issetugid()) + p = getenv("HES_DOMAIN"); + else + p = NULL; + if (p) { + if (ctx->rhs) + free(ctx->rhs); + ctx->rhs = malloc(strlen(p) + 2); + if (ctx->rhs) { + *ctx->rhs = '.'; + strcpy(ctx->rhs + 1, + (*p == '.') ? p + 1 : p); + return 0; + } else + errno = ENOMEM; + } else + return 0; + } + } else + errno = ENOMEM; + + if (ctx->lhs) + free(ctx->lhs); + if (ctx->rhs) + free(ctx->rhs); + if (ctx) + free(ctx); + return -1; +} + +/* + * hesiod_end -- + * Deallocates the hesiod_p. + */ +void +hesiod_end(context) + void *context; +{ + struct hesiod_p *ctx = (struct hesiod_p *) context; + + free(ctx->rhs); + if (ctx->lhs) + free(ctx->lhs); + free(ctx); +} + +/* + * hesiod_to_bind -- + * takes a hesiod (name, type) and returns a DNS + * name which is to be resolved. + */ +char * +hesiod_to_bind(void *context, const char *name, const char *type) +{ + struct hesiod_p *ctx = (struct hesiod_p *) context; + char bindname[MAXDNAME], *p, *ret, **rhs_list = NULL; + const char *rhs; + int len; + size_t bindnamelen; + + if (strlcpy(bindname, name, sizeof(bindname)) >= sizeof(bindname)) { + errno = EMSGSIZE; + return NULL; + } + + /* + * Find the right right hand side to use, possibly + * truncating bindname. + */ + p = strchr(bindname, '@'); + if (p) { + *p++ = 0; + if (strchr(p, '.')) + rhs = name + (p - bindname); + else { + rhs_list = hesiod_resolve(context, p, "rhs-extension"); + if (rhs_list) + rhs = *rhs_list; + else { + errno = ENOENT; + return NULL; + } + } + } else + rhs = ctx->rhs; + + /* See if we have enough room. */ + len = strlen(bindname) + 1 + strlen(type); + if (ctx->lhs) + len += strlen(ctx->lhs) + ((ctx->lhs[0] != '.') ? 1 : 0); + len += strlen(rhs) + ((rhs[0] != '.') ? 1 : 0); + if (len > sizeof(bindname) - 1) { + if (rhs_list) + hesiod_free_list(context, rhs_list); + errno = EMSGSIZE; + return NULL; + } + /* Put together the rest of the domain. */ + strcat(bindname, "."); + strcat(bindname, type); + /* Only append lhs if it isn't empty. */ + if (ctx->lhs && ctx->lhs[0] != '\0' ) { + if (ctx->lhs[0] != '.') + strcat(bindname, "."); + strcat(bindname, ctx->lhs); + } + if (rhs[0] != '.') + strcat(bindname, "."); + strcat(bindname, rhs); + + /* rhs_list is no longer needed, since we're done with rhs. */ + if (rhs_list) + hesiod_free_list(context, rhs_list); + + /* Make a copy of the result and return it to the caller. */ + bindnamelen = strlen (bindname) + 1; + ret = malloc (bindnamelen); + if (!ret) + errno = ENOMEM; + else + memcpy (ret, bindname, bindnamelen); + return ret; +} + +/* + * hesiod_resolve -- + * Given a hesiod name and type, return an array of strings returned + * by the resolver. + */ +char ** +hesiod_resolve(context, name, type) + void *context; + const char *name; + const char *type; +{ + struct hesiod_p *ctx = (struct hesiod_p *) context; + char *bindname, **retvec; + + bindname = hesiod_to_bind(context, name, type); + if (!bindname) + return NULL; + + retvec = get_txt_records(ctx->classes[0], bindname); + if (retvec == NULL && errno == ENOENT && ctx->classes[1]) + retvec = get_txt_records(ctx->classes[1], bindname); + + free(bindname); + return retvec; +} + +/*ARGSUSED*/ +void +hesiod_free_list(context, list) + void *context; + char **list; +{ + char **p; + + if (list == NULL) + return; + for (p = list; *p; p++) + free(*p); + free(list); +} + + +/* read_config_file -- + * Parse the /etc/hesiod.conf file. Returns 0 on success, + * -1 on failure. On failure, it might leave values in ctx->lhs + * or ctx->rhs which need to be freed by the caller. + */ +static int +read_config_file(ctx, filename) + struct hesiod_p *ctx; + const char *filename; +{ + char *key, *data, *p, **which; + char buf[MAXDNAME + 7]; + int n; + FILE *fp; + + /* Set default query classes. */ + ctx->classes[0] = C_IN; + ctx->classes[1] = C_HS; + + /* Try to open the configuration file. */ + fp = fopen(filename, "r"); + if (!fp) { + size_t len; + /* Use compiled in default domain names. */ + len = strlen (DEF_LHS) + 1; + ctx->lhs = malloc (len); + if (ctx->lhs) { + memcpy (ctx->lhs, DEF_LHS, len); + len = strlen (DEF_RHS) + 1; + ctx->rhs = malloc (len); + if (ctx->rhs) + memcpy (ctx->rhs, DEF_RHS, len); + } + if (ctx->lhs && ctx->rhs) + return 0; + else { + errno = ENOMEM; + return -1; + } + } + ctx->lhs = NULL; + ctx->rhs = NULL; + while (fgets(buf, sizeof(buf), fp) != NULL) { + p = buf; + if (*p == '#' || *p == '\n' || *p == '\r') + continue; + while (*p == ' ' || *p == '\t') + p++; + key = p; + while (*p != ' ' && *p != '\t' && *p != '=') + p++; + *p++ = 0; + + while (isspace(*p) || *p == '=') + p++; + data = p; + while (!isspace(*p)) + p++; + *p = 0; + + if (strcasecmp(key, "lhs") == 0 || + strcasecmp(key, "rhs") == 0) { + size_t len; + which = (strcasecmp(key, "lhs") == 0) + ? &ctx->lhs : &ctx->rhs; + len = strlen (data) + 1; + *which = malloc (len); + if (!*which) { + errno = ENOMEM; + return -1; + } + else + memcpy (*which, data, len); + } else { + if (strcasecmp(key, "classes") == 0) { + n = 0; + while (*data && n < 2) { + p = data; + while (*p && *p != ',') + p++; + if (*p) + *p++ = 0; + if (strcasecmp(data, "IN") == 0) + ctx->classes[n++] = C_IN; + else + if (strcasecmp(data, "HS") == 0) + ctx->classes[n++] = + C_HS; + data = p; + } + while (n < 2) + ctx->classes[n++] = 0; + } + } + } + fclose(fp); + + if (!ctx->rhs || ctx->classes[0] == 0 || + ctx->classes[0] == ctx->classes[1]) { + errno = ENOEXEC; + return -1; + } + return 0; +} + +/* + * get_txt_records -- + * Given a DNS class and a DNS name, do a lookup for TXT records, and + * return a list of them. + */ +static char ** +get_txt_records(qclass, name) + int qclass; + const char *name; +{ + HEADER *hp; + unsigned char qbuf[PACKETSZ], abuf[MAX_HESRESP], *p, *eom, *eor; + char *dst, **list; + int ancount, qdcount, i, j, n, skip, type, class, len; + + /* Make sure the resolver is initialized. */ + if ((_res.options & RES_INIT) == 0 && res_init() == -1) + return NULL; + + /* Construct the query. */ + n = res_mkquery(QUERY, name, qclass, T_TXT, NULL, 0, + NULL, qbuf, PACKETSZ); + if (n < 0) + return NULL; + + /* Send the query. */ + n = res_send(qbuf, n, abuf, MAX_HESRESP); + if (n < 0) { + errno = ECONNREFUSED; + return NULL; + } + /* Parse the header of the result. */ + hp = (HEADER *) (void *) abuf; + ancount = ntohs(hp->ancount); + qdcount = ntohs(hp->qdcount); + p = abuf + sizeof(HEADER); + eom = abuf + n; + + /* + * Skip questions, trying to get to the answer section + * which follows. + */ + for (i = 0; i < qdcount; i++) { + skip = dn_skipname(p, eom); + if (skip < 0 || p + skip + QFIXEDSZ > eom) { + errno = EMSGSIZE; + return NULL; + } + p += skip + QFIXEDSZ; + } + + /* Allocate space for the text record answers. */ + list = malloc((ancount + 1) * sizeof(char *)); + if (!list) { + errno = ENOMEM; + return NULL; + } + /* Parse the answers. */ + j = 0; + for (i = 0; i < ancount; i++) { + /* Parse the header of this answer. */ + skip = dn_skipname(p, eom); + if (skip < 0 || p + skip + 10 > eom) + break; + type = p[skip + 0] << 8 | p[skip + 1]; + class = p[skip + 2] << 8 | p[skip + 3]; + len = p[skip + 8] << 8 | p[skip + 9]; + p += skip + 10; + if (p + len > eom) { + errno = EMSGSIZE; + break; + } + /* Skip entries of the wrong class and type. */ + if (class != qclass || type != T_TXT) { + p += len; + continue; + } + /* Allocate space for this answer. */ + list[j] = malloc((size_t)len); + if (!list[j]) { + errno = ENOMEM; + break; + } + dst = list[j++]; + + /* Copy answer data into the allocated area. */ + eor = p + len; + while (p < eor) { + n = (unsigned char) *p++; + if (p + n > eor) { + errno = EMSGSIZE; + break; + } + memcpy(dst, p, (size_t)n); + p += n; + dst += n; + } + if (p < eor) { + errno = EMSGSIZE; + break; + } + *dst = 0; + } + + /* + * If we didn't terminate the loop normally, something + * went wrong. + */ + if (i < ancount) { + for (i = 0; i < j; i++) + free(list[i]); + free(list); + return NULL; + } + if (j == 0) { + errno = ENOENT; + free(list); + return NULL; + } + list[j] = NULL; + return list; +} + + /* + * COMPATIBILITY FUNCTIONS + */ + +static int inited = 0; +static void *context; +static int errval = HES_ER_UNINIT; + +int +hes_init() +{ + init_context(); + return errval; +} + +char * +hes_to_bind(name, type) + const char *name; + const char *type; +{ + static char *bindname; + if (init_context() < 0) + return NULL; + if (bindname) + free(bindname); + bindname = hesiod_to_bind(context, name, type); + if (!bindname) + translate_errors(); + return bindname; +} + +char ** +hes_resolve(name, type) + const char *name; + const char *type; +{ + static char **list; + + if (init_context() < 0) + return NULL; + + /* + * In the old Hesiod interface, the caller was responsible for + * freeing the returned strings but not the vector of strings itself. + */ + if (list) + free(list); + + list = hesiod_resolve(context, name, type); + if (!list) + translate_errors(); + return list; +} + +int +hes_error() +{ + return errval; +} + +void +hes_free(hp) + char **hp; +{ + hesiod_free_list(context, hp); +} + +static int +init_context() +{ + if (!inited) { + inited = 1; + if (hesiod_init(&context) < 0) { + errval = HES_ER_CONFIG; + return -1; + } + errval = HES_ER_OK; + } + return 0; +} + +static void +translate_errors() +{ + switch (errno) { + case ENOENT: + errval = HES_ER_NOTFOUND; + break; + case ECONNREFUSED: + case EMSGSIZE: + errval = HES_ER_NET; + break; + case ENOMEM: + default: + /* Not a good match, but the best we can do. */ + errval = HES_ER_CONFIG; + break; + } +} diff --git a/newlib/libc/sys/linux/net/if_indextoname.3 b/newlib/libc/sys/linux/net/if_indextoname.3 new file mode 100644 index 000000000..4b5bff5aa --- /dev/null +++ b/newlib/libc/sys/linux/net/if_indextoname.3 @@ -0,0 +1,142 @@ +.\" Copyright (c) 1983, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" From: @(#)rcmd.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD: src/lib/libc/net/if_indextoname.3,v 1.7 2001/10/01 16:08:55 ru Exp $ +.\" +.Dd May 21, 1998 +.Dt IF_NAMETOINDEX 3 +.Os +.Sh NAME +.Nm if_nametoindex , +.Nm if_indextoname , +.Nm if_nameindex , +.Nm if_freenameindex +.Nd convert interface index to name, and vice versa +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/socket.h +.In net/if.h +.Ft "unsigned int" +.Fn if_nametoindex "const char *ifname" +.Ft "char *" +.Fn if_indextoname "unsigned int ifindex" "char *ifname" +.Ft "struct if_nameindex *" +.Fn if_nameindex "void" +.Ft "void" +.Fn if_freenameindex "struct if_nameindex *ptr" +.Sh DESCRIPTION +The functions map interface index to readable interface name +(such as +.Dq Li lo0 ) , +and vice versa. +.Pp +.Fn if_nametoindex +converts readable interface name to interface index +.Pp positive integer value . +If the specified interface does not exist, 0 will be returned. +.Pp +.Fn if_indextoname +converts interface index to readable interface name. +The +.Fa ifname +argument must point to a buffer of at least +.Dv IF_NAMESIZE +bytes into which the interface name corresponding to the specified index is +returned. +.Dv ( IF_NAMESIZE +is also defined in +.Aq Pa net/if.h +and its value includes a terminating null byte at the end of the +interface name.) +This pointer is also the return value of the function. +If there is no interface corresponding to the specified index, +.Dv NULL +is returned. +.Pp +.Fn if_nameindex +returns an array of +.Fa if_nameindex +structures. +.Fa if_nametoindex +is also defined in +.Aq Pa net/if.h , +and is as follows: +.Bd -literal -offset +struct if_nameindex { + unsigned int if_index; /* 1, 2, ... */ + char *if_name; /* null terminated name: "le0", ... */ +}; +.Ed +.Pp +The end of the array of structures is indicated by a structure with +an +.Fa if_index +of 0 and an +.Fa if_name +of +.Dv NULL . +The function returns a +.Dv NULL +pointer upon an error. +The memory used for this array of structures along with the interface +names pointed to by the +.Fa if_name +members is obtained dynamically. +This memory is freed by the +.Fn if_freenameindex +function. +.Pp +.Fn if_freenameindex +takes a pointer that was returned by +.Fn if_nameindex +as argument +.Pq Fa ptr , +and it reclaims the region allocated. +.Sh DIAGNOSTICS +.Fn if_nametoindex +returns 0 on error, positive integer on success. +.Fn if_indextoname +and +.Fn if_nameindex +return +.Dv NULL +on errors. +.Sh SEE ALSO +R. Gilligan, S. Thomson, J. Bound, and W. Stevens, +``Basic Socket Interface Extensions for IPv6,'' RFC2553, March 1999. +.Sh HISTORY +The implementation first appeared in WIDE Hydrangea IPv6 protocol stack kit. +.Sh STANDARDS +These functions are defined in ``Basic Socket Interface Extensions for IPv6'' +(RFC2533). diff --git a/newlib/libc/sys/linux/net/ifname.c b/newlib/libc/sys/linux/net/ifname.c new file mode 100644 index 000000000..b7975bc2b --- /dev/null +++ b/newlib/libc/sys/linux/net/ifname.c @@ -0,0 +1,227 @@ +/* $KAME: ifname.c,v 1.4 2001/08/20 02:32:40 itojun Exp $ */ + +/* + * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> +#include <sys/types.h> + +/* + * TODO: + * - prototype defs into arpa/inet.h, not net/if.h (bsd-api-new-02) + */ + +#include <sys/param.h> +#include <sys/socket.h> +#include <sys/sockio.h> +#include <sys/sysctl.h> +#include <net/if.h> +#include <net/route.h> +#include <net/if_dl.h> + +#include <unistd.h> +#include <errno.h> +#include <stdlib.h> +#include <string.h> + +#define ROUNDUP(a) \ + ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) +#define ADVANCE(x, n) + +static unsigned int +if_onametoindex(ifname) + const char *ifname; +{ + struct if_nameindex *iff = if_nameindex(), *ifx; + int ret; + + if (iff == NULL) return 0; + ifx = iff; + while (ifx->if_name != NULL) { + if (strcmp(ifx->if_name, ifname) == 0) { + ret = ifx->if_index; + if_freenameindex(iff); + return ret; + } + ifx++; + } + if_freenameindex(iff); + errno = ENXIO; + return 0; +} + +unsigned int +if_nametoindex(ifname) + const char *ifname; +{ + int s; + struct ifreq ifr; + + s = socket(AF_INET, SOCK_DGRAM, 0); + if (s == -1) + return (0); + strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); + if (ioctl(s, SIOCGIFINDEX, &ifr) == -1) { + close (s); + return (if_onametoindex(ifname)); + } + close(s); + return (ifr.ifr_index); +} + +char * +if_indextoname(ifindex, ifname) + unsigned int ifindex; + char *ifname; /* at least IF_NAMESIZE */ +{ + struct if_nameindex *iff = if_nameindex(), *ifx; + char *cp, *dp; + + if (iff == NULL) return NULL; + ifx = iff; + while (ifx->if_index != 0) { + if (ifx->if_index == ifindex) { + cp = ifname; + dp = ifx->if_name; + while ((*cp++ = *dp++)) ; + if_freenameindex(iff); + return (ifname); + } + ifx++; + } + if_freenameindex(iff); + errno = ENXIO; + return NULL; +} + +struct if_nameindex * +if_nameindex() +{ + size_t needed; + int mib[6], i, ifn = 0, off = 0, hlen; + char *buf = NULL, *lim, *next, *cp, *ifbuf = NULL; + struct rt_msghdr *rtm; + struct if_msghdr *ifm; + struct sockaddr *sa; + struct if_nameindex *ret = NULL; + static int ifxs = 64; /* initial upper limit */ + struct _ifx { + int if_index; + int if_off; + } *ifx = NULL; + + mib[0] = CTL_NET; + mib[1] = PF_ROUTE; + mib[2] = 0; /* protocol */ + mib[3] = 0; /* wildcard address family */ + mib[4] = 0; + mib[5] = 0; /* no flags */ + if (__sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) + return NULL; + if ((buf = malloc(needed)) == NULL) { + errno = ENOMEM; + goto end; + } + /* XXX: we may have allocated too much than necessary */ + if ((ifbuf = malloc(needed)) == NULL) { + errno = ENOMEM; + goto end; + } + if ((ifx = (struct _ifx *)malloc(sizeof(*ifx) * ifxs)) == NULL) { + errno = ENOMEM; + goto end; + } + if (__sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { + /* sysctl has set errno */ + goto end; + } + lim = buf + needed; + for (next = buf; next < lim; next += rtm->rtm_msglen) { + rtm = (struct rt_msghdr *)next; + if (rtm->rtm_version != RTM_VERSION) { + errno = EPROTONOSUPPORT; + goto end; + } + switch (rtm->rtm_type) { + case RTM_IFINFO: + ifm = (struct if_msghdr *)rtm; + ifx[ifn].if_index = ifm->ifm_index; + ifx[ifn].if_off = off; + cp = (char *)(ifm + 1); + for (i = 1; i; i <<= 1) { + if (i & ifm->ifm_addrs) { + sa = (struct sockaddr *)cp; + ADVANCE(cp, sa); + } + } + if (++ifn == ifxs) { + /* we need more memory */ + struct _ifx *newifx; + + ifxs *= 2; + if ((newifx = (struct _ifx *)malloc(sizeof(*newifx) * ifxs)) == NULL) { + errno = ENOMEM; + goto end; + } + + /* copy and free old data */ + memcpy(newifx, ifx, (sizeof(*ifx) * ifxs) / 2); + free(ifx); + ifx = newifx; + } + } + } + hlen = sizeof(struct if_nameindex) * (ifn + 1); + if ((cp = (char *)malloc(hlen + off)) == NULL) { + errno = ENOMEM; + goto end; + } + bcopy(ifbuf, cp + hlen, off); + ret = (struct if_nameindex *)cp; + for (i = 0; i < ifn; i++) { + ret[i].if_index = ifx[i].if_index; + ret[i].if_name = cp + hlen + ifx[i].if_off; + } + ret[ifn].if_index = 0; + ret[ifn].if_name = NULL; + + end: + if (buf) free(buf); + if (ifbuf) free(ifbuf); + if (ifx) free(ifx); + + return ret; +} + +void if_freenameindex(ptr) + struct if_nameindex *ptr; +{ + free(ptr); +} diff --git a/newlib/libc/sys/linux/net/inet.3 b/newlib/libc/sys/linux/net/inet.3 new file mode 100644 index 000000000..7a6fcf370 --- /dev/null +++ b/newlib/libc/sys/linux/net/inet.3 @@ -0,0 +1,271 @@ +.\" Copyright (c) 1983, 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" From: @(#)inet.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD: src/lib/libc/net/inet.3,v 1.22 2001/12/01 03:43:01 mike Exp $ +.\" +.Dd June 17, 1996 +.Dt INET 3 +.Os +.Sh NAME +.Nm inet_aton , +.Nm inet_addr , +.Nm inet_network , +.Nm inet_ntoa , +.Nm inet_ntop , +.Nm inet_pton , +.Nm inet_makeaddr , +.Nm inet_lnaof , +.Nm inet_netof +.Nd Internet address manipulation routines +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/socket.h +.In netinet/in.h +.In arpa/inet.h +.Ft int +.Fn inet_aton "const char *cp" "struct in_addr *pin" +.Ft in_addr_t +.Fn inet_addr "const char *cp" +.Ft in_addr_t +.Fn inet_network "const char *cp" +.Ft char * +.Fn inet_ntoa "struct in_addr in" +.Ft const char * +.Fn inet_ntop "int af" "const void *src" "char *dst" "socklen_t size" +.Ft int +.Fn inet_pton "int af" "const char *src" "void *dst" +.Ft struct in_addr +.Fn inet_makeaddr "in_addr_t net" "in_addr_t lna" +.Ft in_addr_t +.Fn inet_lnaof "struct in_addr in" +.Ft in_addr_t +.Fn inet_netof "struct in_addr in" +.Sh DESCRIPTION +The routines +.Fn inet_aton , +.Fn inet_addr +and +.Fn inet_network +interpret character strings representing +numbers expressed in the Internet standard +.Ql .\& +notation. +.Pp +The +.Fn inet_pton +function converts a presentation format address (that is, printable form +as held in a character string) to network format (usually a +.Ft struct in_addr +or some other internal binary representation, in network byte order). +It returns 1 if the address was valid for the specified address family, or +0 if the address wasn't parseable in the specified address family, or -1 +if some system error occurred (in which case +.Va errno +will have been set). +This function is presently valid for +.Dv AF_INET +and +.Dv AF_INET6 . +.Pp +The +.Fn inet_aton +routine interprets the specified character string as an Internet address, +placing the address into the structure provided. +It returns 1 if the string was successfully interpreted, +or 0 if the string is invalid. +The +.Fn inet_addr +and +.Fn inet_network +functions return numbers suitable for use +as Internet addresses and Internet network +numbers, respectively. +.Pp +The function +.Fn inet_ntop +converts an address from network format (usually a +.Ft struct in_addr +or some other binary form, in network byte order) to presentation format +(suitable for external display purposes). +It returns NULL if a system error occurs (in which case, +.Va errno +will have been set), or it returns a pointer to the destination string. +This function is presently valid for +.Dv AF_INET +and +.Dv AF_INET6 . +.Pp +The routine +.Fn inet_ntoa +takes an Internet address and returns an +.Tn ASCII +string representing the address in +.Ql .\& +notation. The routine +.Fn inet_makeaddr +takes an Internet network number and a local +network address and constructs an Internet address +from it. The routines +.Fn inet_netof +and +.Fn inet_lnaof +break apart Internet host addresses, returning +the network number and local network address part, +respectively. +.Pp +All Internet addresses are returned in network +order (bytes ordered from left to right). +All network numbers and local address parts are +returned as machine byte order integer values. +.Sh INTERNET ADDRESSES +Values specified using the +.Ql .\& +notation take one +of the following forms: +.Bd -literal -offset indent +a.b.c.d +a.b.c +a.b +a +.Ed +.Pp +When four parts are specified, each is interpreted +as a byte of data and assigned, from left to right, +to the four bytes of an Internet address. Note +that when an Internet address is viewed as a 32-bit +integer quantity on the +.Tn VAX +the bytes referred to +above appear as +.Dq Li d.c.b.a . +That is, +.Tn VAX +bytes are +ordered from right to left. +.Pp +When a three part address is specified, the last +part is interpreted as a 16-bit quantity and placed +in the right-most two bytes of the network address. +This makes the three part address format convenient +for specifying Class B network addresses as +.Dq Li 128.net.host . +.Pp +When a two part address is supplied, the last part +is interpreted as a 24-bit quantity and placed in +the right most three bytes of the network address. +This makes the two part address format convenient +for specifying Class A network addresses as +.Dq Li net.host . +.Pp +When only one part is given, the value is stored +directly in the network address without any byte +rearrangement. +.Pp +All numbers supplied as +.Dq parts +in a +.Ql .\& +notation +may be decimal, octal, or hexadecimal, as specified +in the C language (i.e., a leading 0x or 0X implies +hexadecimal; otherwise, a leading 0 implies octal; +otherwise, the number is interpreted as decimal). +.Pp +The +.Fn inet_aton +and +.Fn inet_ntoa +functions are semi-deprecated in favor of the +.Xr addr2ascii 3 +family. However, since those functions are not yet widely implemented, +portable programs cannot rely on their presence and will continue +to use the +.Xr inet 3 +functions for some time. +.Sh DIAGNOSTICS +The constant +.Dv INADDR_NONE +is returned by +.Fn inet_addr +and +.Fn inet_network +for malformed requests. +.Sh SEE ALSO +.Xr addr2ascii 3 , +.Xr byteorder 3 , +.Xr gethostbyname 3 , +.Xr getnetent 3 , +.Xr inet_net 3 , +.Xr hosts 5 , +.Xr networks 5 +.Rs +.%R RFC +.%N 2373 +.%D July 1998 +.%T "IP Version 6 Addressing Architecture" +.Re +.Sh STANDARDS +The +.Fn inet_ntop +and +.Fn inet_pton +functions conform to +.St -xns5.2 . +Note that +.Fn inet_pton +does not accept 1-, 2-, or 3-part dotted addresses; all four parts +must be specified and are interpreted only as decimal values. +This is a narrower input set than that accepted by +.Fn inet_aton . +.Sh HISTORY +These +functions appeared in +.Bx 4.2 . +.Sh BUGS +The value +.Dv INADDR_NONE +(0xffffffff) is a valid broadcast address, but +.Fn inet_addr +cannot return that value without indicating failure. +The newer +.Fn inet_aton +function does not share this problem. +The problem of host byte ordering versus network byte ordering is +confusing. +The string returned by +.Fn inet_ntoa +resides in a static memory area. +.Pp +Inet_addr should return a +.Fa struct in_addr . diff --git a/newlib/libc/sys/linux/net/inet6_option_space.3 b/newlib/libc/sys/linux/net/inet6_option_space.3 new file mode 100644 index 000000000..328c70f48 --- /dev/null +++ b/newlib/libc/sys/linux/net/inet6_option_space.3 @@ -0,0 +1,445 @@ +.\" Copyright (c) 1983, 1987, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $Id$ +.\" $FreeBSD: src/lib/libc/net/inet6_option_space.3,v 1.8 2001/10/01 16:08:55 ru Exp $ +.\" +.Dd December 10, 1999 +.Dt INET6_OPTION_SPACE 3 +.Os +.\" +.Sh NAME +.Nm inet6_option_space , +.Nm inet6_option_init , +.Nm inet6_option_append , +.Nm inet6_option_alloc , +.Nm inet6_option_next , +.Nm inet6_option_find +.Nd IPv6 Hop-by-Hop and Destination Options manipulation +.\" +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In netinet/in.h +.Ft "int" +.Fn inet6_option_space "int nbytes" +.Ft "int" +.Fn inet6_option_init "void *bp" "struct cmsghdr **cmsgp" "int type" +.Ft "int" +.Fn inet6_option_append "struct cmsghdr *cmsg" "const u_int8_t *typep" "int multx" "int plusy" +.Ft "u_int8_t *" +.Fn inet6_option_alloc "struct cmsghdr *cmsg" "int datalen" "int multx" "int plusy" +.Ft "int" +.Fn inet6_option_next "const struct cmsghdr *cmsg" "u_int8_t **tptrp" +.Ft "int" +.Fn inet6_option_find "const struct cmsghdr *cmsg" "u_int8_t **tptrp" "int type" +.\" +.Sh DESCRIPTION +.\" +Building and parsing the Hop-by-Hop and Destination options is +complicated due to alignment constranints, padding and +ancillary data manipulation. +RFC2292 defines a set of functions to help the application. +The function prototypes for +these functions are all in the +.Aq Li netinet/in.h +header. +.\" +.Ss inet6_option_space +.Fn inet6_option_space +returns the number of bytes required to hold an option when it is stored as +ancillary data, including the +.Li cmsghdr +structure at the beginning, +and any padding at the end +(to make its size a multiple of 8 bytes). +The argument is the size of the structure defining the option, +which must include any pad bytes at the beginning +(the value +.Li y +in the alignment term +.Dq Li "xn + y" ) , +the type byte, the length byte, and the option data. +.Pp +Note: If multiple options are stored in a single ancillary data +object, which is the recommended technique, this function +overestimates the amount of space required by the size of +.Li N-1 +.Li cmsghdr +structures, +where +.Li N +is the number of options to be stored in the object. +This is of little consequence, since it is assumed that most +Hop-by-Hop option headers and Destination option headers carry only +one option +(appendix B of [RFC-2460]). +.\" +.Ss inet6_option_init +.Fn inet6_option_init +is called once per ancillary data object that will +contain either Hop-by-Hop or Destination options. +It returns +.Li 0 +on success or +.Li -1 +on an error. +.Pp +.Fa bp +is a pointer to previously allocated space that will contain the +ancillary data object. +It must be large enough to contain all the +individual options to be added by later calls to +.Fn inet6_option_append +and +.Fn inet6_option_alloc . +.Pp +.Fa cmsgp +is a pointer to a pointer to a +.Li cmsghdr +structure. +.Fa *cmsgp +is initialized by this function to point to the +.Li cmsghdr +structure constructed by this function in the buffer pointed to by +.Fa bp . +.Pp +.Fa type +is either +.Dv IPV6_HOPOPTS +or +.Dv IPV6_DSTOPTS . +This +.Fa type +is stored in the +.Li cmsg_type +member of the +.Li cmsghdr +structure pointed to by +.Fa *cmsgp . +.\" +.Ss inet6_option_append +This function appends a Hop-by-Hop option or a Destination option +into an ancillary data object that has been initialized by +.Fn inet6_option_init . +This function returns +.Li 0 +if it succeeds or +.Li -1 +on an error. +.Pp +.Fa cmsg +is a pointer to the +.Li cmsghdr +structure that must have been +initialized by +.Fn inet6_option_init . +.Pp +.Fa typep +is a pointer to the 8-bit option type. +It is assumed that this +field is immediately followed by the 8-bit option data length field, +which is then followed immediately by the option data. +The caller +initializes these three fields +(the type-length-value, or TLV) +before calling this function. +.Pp +The option type must have a value from +.Li 2 +to +.Li 255 , +inclusive. +.Li ( 0 +and +.Li 1 +are reserved for the +.Li Pad1 +and +.Li PadN +options, respectively.) +.Pp +The option data length must have a value between +.Li 0 +and +.Li 255 , +inclusive, and is the length of the option data that follows. +.Pp +.Fa multx +is the value +.Li x +in the alignment term +.Dq Li xn + y . +It must have a value of +.Li 1 , +.Li 2 , +.Li 4 , +or +.Li 8 . +.Pp +.Fa plusy +is the value +.Li y +in the alignment term +.Dq Li xn + y . +It must have a value between +.Li 0 +and +.Li 7 , +inclusive. +.\" +.Ss inet6_option_alloc +This function appends a Hop-by-Hop option or a Destination option +into an ancillary data object that has been initialized by +.Fn inet6_option_init . +This function returns a pointer to the 8-bit +option type field that starts the option on success, or +.Dv NULL +on an error. +.Pp +The difference between this function and +.Fn inet6_option_append +is that the latter copies the contents of a previously built option into +the ancillary data object while the current function returns a +pointer to the space in the data object where the option's TLV must +then be built by the caller. +.Pp +.Fa cmsg +is a pointer to the +.Li cmsghdr +structure that must have been +initialized by +.Fn inet6_option_init . +.Pp +.Fa datalen +is the value of the option data length byte for this option. +This value is required as an argument to allow the function to +determine if padding must be appended at the end of the option. +(The +.Fn inet6_option_append +function does not need a data length argument +since the option data length must already be stored by the caller.) +.Pp +.Fa multx +is the value +.Li x +in the alignment term +.Dq Li xn + y . +It must have a value of +.Li 1 , +.Li 2 , +.Li 4 , +or +.Li 8 . +.Pp +.Fa plusy +is the value +.Li y +in the alignment term +.Dq Li xn + y . +It must have a value between +.Li 0 +and +.Li 7 , +inclusive. +.\" +.Ss inet6_option_next +This function processes the next Hop-by-Hop option or Destination +option in an ancillary data object. +If another option remains to be +processed, the return value of the function is +.Li 0 +and +.Fa *tptrp +points to +the 8-bit option type field +(which is followed by the 8-bit option +data length, followed by the option data). +If no more options remain +to be processed, the return value is +.Li -1 +and +.Fa *tptrp +is +.Dv NULL . +If an error occurs, the return value is +.Li -1 +and +.Fa *tptrp +is not +.Dv NULL . +.Pp +.Fa cmsg +is a pointer to +.Li cmsghdr +structure of which +.Li cmsg_level +equals +.Dv IPPROTO_IPV6 +and +.Li cmsg_type +equals either +.Dv IPV6_HOPOPTS +or +.Dv IPV6_DSTOPTS . +.Pp +.Fa tptrp +is a pointer to a pointer to an 8-bit byte and +.Fa *tptrp +is used +by the function to remember its place in the ancillary data object +each time the function is called. +The first time this function is +called for a given ancillary data object, +.Fa *tptrp +must be set to +.Dv NULL . +.Pp +Each time this function returns success, +.Fa *tptrp +points to the 8-bit +option type field for the next option to be processed. +.\" +.Ss inet6_option_find +This function is similar to the previously described +.Fn inet6_option_next +function, except this function lets the caller +specify the option type to be searched for, instead of always +returning the next option in the ancillary data object. +.Fa cmsg +is a +pointer to +.Li cmsghdr +structure of which +.Li cmsg_level +equals +.Dv IPPROTO_IPV6 +and +.Li cmsg_type +equals either +.Dv IPV6_HOPOPTS +or +.Dv IPV6_DSTOPTS . +.Pp +.Fa tptrp +is a pointer to a pointer to an 8-bit byte and +.Fa *tptrp +is used +by the function to remember its place in the ancillary data object +each time the function is called. +The first time this function is +called for a given ancillary data object, +.Fa *tptrp +must be set to +.Dv NULL . +.Pa +This function starts searching for an option of the specified type +beginning after the value of +.Fa *tptrp . +If an option of the specified +type is located, this function returns +.Li 0 +and +.Fa *tptrp +points to the 8- +bit option type field for the option of the specified type. +If an +option of the specified type is not located, the return value is +.Li -1 +and +.Fa *tptrp +is +.Dv NULL . +If an error occurs, the return value is +.Li -1 +and +.Fa *tptrp +is not +.Dv NULL . +.\" +.Sh DIAGNOSTICS +.Fn inet6_option_init +and +.Fn inet6_option_append +return +.Li 0 +on success or +.Li -1 +on an error. +.Pp +.Fn inet6_option_alloc +returns +.Dv NULL +on an error. +.Pp +On errors, +.Fn inet6_option_next +and +.Fn inet6_option_find +return +.Li -1 +setting +.Fa *tptrp +to non +.Dv NULL +value. +.\" +.Sh EXAMPLES +RFC2292 gives comprehensive examples in chapter 6. +.\" +.Sh SEE ALSO +.Rs +.%A W. Stevens +.%A M. Thomas +.%T "Advanced Sockets API for IPv6" +.%N RFC2292 +.%D February 1998 +.Re +.Rs +.%A S. Deering +.%A R. Hinden +.%T "Internet Protocol, Version 6 (IPv6) Specification" +.%N RFC2460 +.%D December 1998 +.Re +.\" +.Sh HISTORY +The implementation first appeared in KAME advanced networking kit. +.\" +.Sh STANDARDS +The functions +are documented in +.Dq Advanced Sockets API for IPv6 +(RFC2292). +.\" +.Sh BUGS +The text was shamelessly copied from RFC2292. diff --git a/newlib/libc/sys/linux/net/inet6_rthdr_space.3 b/newlib/libc/sys/linux/net/inet6_rthdr_space.3 new file mode 100644 index 000000000..d2c575dca --- /dev/null +++ b/newlib/libc/sys/linux/net/inet6_rthdr_space.3 @@ -0,0 +1,323 @@ +.\" Copyright (c) 1983, 1987, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $Id$ +.\" $FreeBSD: src/lib/libc/net/inet6_rthdr_space.3,v 1.8 2001/10/01 16:08:55 ru Exp $ +.\" +.Dd December 10, 1999 +.Dt INET6_RTHDR_SPACE 3 +.Os +.\" +.Sh NAME +.Nm inet6_rthdr_space , +.Nm inet6_rthdr_init , +.Nm inet6_rthdr_add , +.Nm inet6_rthdr_lasthop , +.Nm inet6_rthdr_reverse , +.Nm inet6_rthdr_segments , +.Nm inet6_rthdr_getaddr , +.Nm inet6_rthdr_getflags +.Nd IPv6 Routing Header Options manipulation +.\" +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In netinet/in.h +.Ft size_t +.Fn inet6_rthdr_space "int type" "int segments" +.Ft "struct cmsghdr *" +.Fn inet6_rthdr_init "void *bp" "int type" +.Ft int +.Fn inet6_rthdr_add "struct cmsghdr *cmsg" "const struct in6_addr *addr" "unsigned int flags" +.Ft int +.Fn inet6_rthdr_lasthop "struct cmsghdr *cmsg" "unsigned int flags" +.Ft int +.Fn inet6_rthdr_reverse "const struct cmsghdr *in" "struct cmsghdr *out" +.Ft int +.Fn inet6_rthdr_segments "const struct cmsghdr *cmsg" +.Ft "struct in6_addr *" +.Fn inet6_rthdr_getaddr "struct cmsghdr *cmsg" "int index" +.Ft int +.Fn inet6_rthdr_getflags "const struct cmsghdr *cmsg" "int index" +.\" +.Sh DESCRIPTION +RFC2292 IPv6 advanced API defines eight +functions that the application calls to build and examine a Routing +header. Four functions build a Routing header: +.Bl -hang +.It Fn inet6_rthdr_space +return #bytes required for ancillary data +.It Fn inet6_rthdr_init +initialize ancillary data for Routing header +.It Fn inet6_rthdr_add +add IPv6 address & flags to Routing header +.It Fn inet6_rthdr_lasthop +specify the flags for the final hop +.El +.Pp +Four functions deal with a returned Routing header: +.Bl -hang +.It Fn inet6_rthdr_reverse +reverse a Routing header +.It Fn inet6_rthdr_segments +return #segments in a Routing header +.It Fn inet6_rthdr_getaddr +fetch one address from a Routing header +.It Fn inet6_rthdr_getflags +fetch one flag from a Routing header +.El +.Pp +The function prototypes for these functions are all in the +.Aq Li netinet/in.h +header. +.\" +.Ss inet6_rthdr_space +This function returns the number of bytes required to hold a Routing +header of the specified +.Fa type +containing the specified number of +.Fa segments +(addresses). +For an IPv6 Type 0 Routing header, the number +of segments must be between 1 and 23, inclusive. The return value +includes the size of the cmsghdr structure that precedes the Routing +header, and any required padding. +.Pp +If the return value is 0, then either the type of the Routing header +is not supported by this implementation or the number of segments is +invalid for this type of Routing header. +.Pp +Note: This function returns the size but does not allocate the space +required for the ancillary data. +This allows an application to +allocate a larger buffer, if other ancillary data objects are +desired, since all the ancillary data objects must be specified to +.Xr sendmsg 2 +as a single +.Li msg_control +buffer. +.\" +.Ss inet6_rthdr_init +This function initializes the buffer pointed to by +.Fa bp +to contain a +.Li cmsghdr +structure followed by a Routing header of the specified +.Fa type . +The +.Li cmsg_len +member of the +.Li cmsghdr +structure is initialized to the +size of the structure plus the amount of space required by the +Routing header. +The +.Li cmsg_level +and +.Li cmsg_type +members are also initialized as required. +.Pp +The caller must allocate the buffer and its size can be determined by +calling +.Fn inet6_rthdr_space . +.Pp +Upon success the return value is the pointer to the +.Li cmsghdr +structure, and this is then used as the first argument to the next +two functions. +Upon an error the return value is +.Dv NULL . +.\" +.Ss inet6_rthdr_add +This function adds the address pointed to by +.Fa addr +to the end of the +Routing header being constructed and sets the type of this hop to the +value of +.Fa flags . +For an IPv6 Type 0 Routing header, +.Fa flags +must be +either +.Dv IPV6_RTHDR_LOOSE +or +.Dv IPV6_RTHDR_STRICT . +.Pp +If successful, the +.Li cmsg_len +member of the +.Li cmsghdr +structure is +updated to account for the new address in the Routing header and the +return value of the function is 0. +Upon an error the return value of +the function is -1. +.\" +.Ss inet6_rthdr_lasthop +This function specifies the Strict/Loose flag for the final hop of a +Routing header. +For an IPv6 Type 0 Routing header, +.Fa flags +must be either +.Dv IPV6_RTHDR_LOOSE +or +.Dv IPV6_RTHDR_STRICT . +.Pp +The return value of the function is 0 upon success, or -1 upon an error. +.Pp +Notice that a Routing header specifying +.Li N +intermediate nodes requires +.Li N+1 +Strict/Loose flags. +This requires +.Li N +calls to +.Fn inet6_rthdr_add +followed by one call to +.Fn inet6_rthdr_lasthop . +.\" +.Ss inet6_rthdr_reverse +This function is not yet implemented. +When implemented, this should behave as follows. +.Pp +This function takes a Routing header that was received as ancillary +data +(pointed to by the first argument, +.Fa in ) +and writes a new Routing +header that sends datagrams along the reverse of that route. +Both +arguments are allowed to point to the same buffer +(that is, the reversal can occur in place). +.Pp +The return value of the function is 0 on success, or -1 upon an +error. +.\" +.Ss inet6_rthdr_segments +This function returns the number of segments +(addresses) +contained in +the Routing header described by +.Fa cmsg . +On success the return value is +between 1 and 23, inclusive. +The return value of the function is -1 upon an error. +.\" +.Ss inet6_rthdr_getaddr +This function returns a pointer to the IPv6 address specified by +.Fa index +(which must have a value between 1 and the value returned by +.Fn inet6_rthdr_segments ) +in the Routing header described by +.Fa cmsg . +An +application should first call +.Fn inet6_rthdr_segments +to obtain the number of segments in the Routing header. +.Pp +Upon an error the return value of the function is +.Dv NULL . +.\" +.Ss inet6_rthdr_getflags +This function returns the flags value specified by +.Fa index +(which must +have a value between 0 and the value returned by +.Fn inet6_rthdr_segments ) +in the Routing header described by +.Fa cmsg . +For an IPv6 Type 0 Routing header the return value will be either +.Dv IPV6_RTHDR_LOOSE +or +.Dv IPV6_RTHDR_STRICT . +.Pp +Upon an error the return value of the function is -1. +.Pp +Note: Addresses are indexed starting at 1, and flags starting at 0, +to maintain consistency with the terminology and figures in RFC2460. +.\" +.Sh DIAGNOSTICS +.Fn inet6_rthdr_space +returns 0 on errors. +.Pp +.Fn inet6_rthdr_add , +.Fn inet6_rthdr_lasthop +and +.Fn inet6_rthdr_reverse +return 0 on success, and returns -1 on error. +.Pp +.Fn inet6_rthdr_init +and +.Fn inet6_rthdr_getaddr +return +.Dv NULL +on error. +.Pp +.Fn inet6_rthdr_segments +and +.Fn inet6_rthdr_getflags +return -1 on error. +.\" +.Sh EXAMPLES +RFC2292 gives comprehensive examples in chapter 8. +.\" +.Sh SEE ALSO +.Rs +.%A W. Stevens +.%A M. Thomas +.%T "Advanced Sockets API for IPv6" +.%N RFC2292 +.%D February 1998 +.Re +.Rs +.%A S. Deering +.%A R. Hinden +.%T "Internet Protocol, Version 6 (IPv6) Specification" +.%N RFC2460 +.%D December 1998 +.Re +.\" +.Sh HISTORY +The implementation first appeared in KAME advanced networking kit. +.\" +.Sh STANDARDS +The functions +are documented in +.Dq Advanced Sockets API for IPv6 +(RFC2292). +.\" +.Sh BUGS +The text was shamelessly copied from RFC2292. +.Pp +.Fn inet6_rthdr_reverse +is not implemented yet. diff --git a/newlib/libc/sys/linux/net/inet_addr.c b/newlib/libc/sys/linux/net/inet_addr.c new file mode 100644 index 000000000..874ca80e6 --- /dev/null +++ b/newlib/libc/sys/linux/net/inet_addr.c @@ -0,0 +1,201 @@ +/* $KAME: inet_addr.c,v 1.5 2001/08/20 02:32:40 itojun Exp $ */ + +/* + * ++Copyright++ 1983, 1990, 1993 + * - + * Copyright (c) 1983, 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * - + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + * - + * --Copyright-- + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)inet_addr.c 8.1 (Berkeley) 6/17/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> +#include <machine/endian.h> + +#include <sys/param.h> + +#include <netinet/in.h> +#include <arpa/inet.h> + +#include <ctype.h> +#include <errno.h> +#include <string.h> +#include <stdlib.h> + +/* + * ASCII internet address interpretation routine. + * The value returned is in network order. + */ +in_addr_t /* XXX should be struct in_addr :( */ +inet_addr(cp) + const char *cp; +{ + struct in_addr val; + + if (inet_aton(cp, &val)) + return (val.s_addr); + return (INADDR_NONE); +} + +/* + * Check whether "cp" is a valid ASCII representation + * of an Internet address and convert to a binary address. + * Returns 1 if the address is valid, 0 if not. + * This replaces inet_addr, the return value from which + * cannot distinguish between failure and a local broadcast address. + */ +int +inet_aton(cp, addr) + const char *cp; + struct in_addr *addr; +{ + u_long parts[4]; + in_addr_t val; + char *c; + char *endptr; + int gotend, n; + + c = (char *)cp; + n = 0; + /* + * Run through the string, grabbing numbers until + * the end of the string, or some error + */ + gotend = 0; + while (!gotend) { + errno = 0; + val = strtoul(c, &endptr, 0); + + if (errno == ERANGE) /* Fail completely if it overflowed. */ + return (0); + + /* + * If the whole string is invalid, endptr will equal + * c.. this way we can make sure someone hasn't + * gone '.12' or something which would get past + * the next check. + */ + if (endptr == c) + return (0); + parts[n] = val; + c = endptr; + + /* Check the next character past the previous number's end */ + switch (*c) { + case '.' : + /* Make sure we only do 3 dots .. */ + if (n == 3) /* Whoops. Quit. */ + return (0); + n++; + c++; + break; + + case '\0': + gotend = 1; + break; + + default: + if (isspace((unsigned char)*c)) { + gotend = 1; + break; + } else + return (0); /* Invalid character, so fail */ + } + + } + + /* + * Concoct the address according to + * the number of parts specified. + */ + + switch (n) { + case 0: /* a -- 32 bits */ + /* + * Nothing is necessary here. Overflow checking was + * already done in strtoul(). + */ + break; + case 1: /* a.b -- 8.24 bits */ + if (val > 0xffffff || parts[0] > 0xff) + return (0); + val |= parts[0] << 24; + break; + + case 2: /* a.b.c -- 8.8.16 bits */ + if (val > 0xffff || parts[0] > 0xff || parts[1] > 0xff) + return (0); + val |= (parts[0] << 24) | (parts[1] << 16); + break; + + case 3: /* a.b.c.d -- 8.8.8.8 bits */ + if (val > 0xff || parts[0] > 0xff || parts[1] > 0xff || + parts[2] > 0xff) + return (0); + val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8); + break; + } + + if (addr != NULL) + addr->s_addr = htonl(val); + return (1); +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <arpa/inet.h>. + */ +#undef inet_addr +__weak_reference(__inet_addr, inet_addr); +#undef inet_aton +__weak_reference(__inet_aton, inet_aton); diff --git a/newlib/libc/sys/linux/net/inet_lnaof.c b/newlib/libc/sys/linux/net/inet_lnaof.c new file mode 100644 index 000000000..c6c999dd1 --- /dev/null +++ b/newlib/libc/sys/linux/net/inet_lnaof.c @@ -0,0 +1,69 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)inet_lnaof.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> +#include <machine/endian.h> + +#include <sys/param.h> +#include <netinet/in.h> +#include <arpa/inet.h> + +/* + * Return the local network address portion of an + * internet address; handles class a/b/c network + * number formats. + */ +in_addr_t +inet_lnaof(in) + struct in_addr in; +{ + in_addr_t i = ntohl(in.s_addr); + + if (IN_CLASSA(i)) + return ((i)&IN_CLASSA_HOST); + else if (IN_CLASSB(i)) + return ((i)&IN_CLASSB_HOST); + else + return ((i)&IN_CLASSC_HOST); +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <arpa/inet.h>. + */ +#undef inet_lnaof +__weak_reference(__inet_lnaof, inet_lnaof); diff --git a/newlib/libc/sys/linux/net/inet_makeaddr.c b/newlib/libc/sys/linux/net/inet_makeaddr.c new file mode 100644 index 000000000..339b2d5a7 --- /dev/null +++ b/newlib/libc/sys/linux/net/inet_makeaddr.c @@ -0,0 +1,72 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)inet_makeaddr.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> +#include <machine/endian.h> + +#include <sys/param.h> +#include <netinet/in.h> +#include <arpa/inet.h> + +/* + * Formulate an Internet address from network + host. Used in + * building addresses stored in the ifnet structure. + */ +struct in_addr +inet_makeaddr(net, host) + in_addr_t net, host; +{ + in_addr_t addr; + + if (net < 128) + addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST); + else if (net < 65536) + addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST); + else if (net < 16777216L) + addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST); + else + addr = net | host; + addr = htonl(addr); + return (*(struct in_addr *)&addr); +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <arpa/inet.h>. + */ +#undef inet_makeaddr +__weak_reference(__inet_makeaddr, inet_makeaddr); diff --git a/newlib/libc/sys/linux/net/inet_net.3 b/newlib/libc/sys/linux/net/inet_net.3 new file mode 100644 index 000000000..1d43bcc1d --- /dev/null +++ b/newlib/libc/sys/linux/net/inet_net.3 @@ -0,0 +1,157 @@ +.\" $NetBSD: inet_net.3,v 1.4 1999/03/22 19:44:52 garbled Exp $ +.\" +.\" Copyright (c) 1997 The NetBSD Foundation, Inc. +.\" All rights reserved. +.\" +.\" This code is derived from software contributed to The NetBSD Foundation +.\" by Luke Mewburn. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the NetBSD +.\" Foundation, Inc. and its contributors. +.\" 4. Neither the name of The NetBSD Foundation nor the names of its +.\" contributors may be used to endorse or promote products derived +.\" from this software without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS +.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS +.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD: src/lib/libc/net/inet_net.3,v 1.1 2001/08/31 10:54:44 ru Exp $ +.\" +.Dd June 18, 1997 +.Dt INET_NET 3 +.Os +.Sh NAME +.Nm inet_net_ntop , +.Nm inet_net_pton +.Nd Internet network number manipulation routines +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/socket.h +.In netinet/in.h +.In arpa/inet.h +.Ft char * +.Fn inet_net_ntop "int af" "const void *src" "int bits" "char *dst" "size_t size" +.Ft int +.Fn inet_net_pton "int af" "const char *src" "void *dst" "size_t size" +.Sh DESCRIPTION +The +.Fn inet_net_ntop +function converts an Internet network number from network format (usually a +.Vt "struct in_addr" +or some other binary form, in network byte order) to CIDR presentation format +(suitable for external display purposes). +.Fa bits +is the number of bits in +.Fa src +that are the network number. +It returns +.Dv NULL +if a system error occurs (in which case, +.Va errno +will have been set), or it returns a pointer to the destination string. +.Pp +The +.Fn inet_net_pton +function converts a presentation format Internet network number (that is, +printable form as held in a character string) to network format (usually a +.Vt "struct in_addr" +or some other internal binary representation, in network byte order). +It returns the number of bits (either computed based on the class, or +specified with /CIDR), or \-1 if a failure occurred +(in which case +.Va errno +will have been set. +It will be set to +.Er ENOENT +if the Internet network number was not valid). +.Pp +The only value for +.Fa af +currently supported is +.Dv AF_INET . +.Fa size +is the size of the result buffer +.Fa dst . +.Pp +.Sh NETWORK NUMBERS (IP VERSION 4) +Internet network numbers may be specified in one of the following forms: +.Bd -literal -offset indent +a.b.c.d/bits +a.b.c.d +a.b.c +a.b +a +.Ed +.Pp +When four parts are specified, each is interpreted +as a byte of data and assigned, from left to right, +to the four bytes of an Internet network number. +Note +that when an Internet network number is viewed as a 32-bit +integer quantity on a system that uses little-endian +byte order (such as the +.Tn Intel 386 , 486 , +and +.Tn Pentium +processors) the bytes referred to above appear as +.Dq Li d.c.b.a . +That is, little-endian bytes are ordered from right to left. +.Pp +When a three part number is specified, the last +part is interpreted as a 16-bit quantity and placed +in the rightmost two bytes of the Internet network number. +This makes the three part number format convenient +for specifying Class B network numbers as +.Dq Li 128.net.host . +.Pp +When a two part number is supplied, the last part +is interpreted as a 24-bit quantity and placed in +the rightmost three bytes of the Internet network number. +This makes the two part number format convenient +for specifying Class A network numbers as +.Dq Li net.host . +.Pp +When only one part is given, the value is stored +directly in the Internet network number without any byte +rearrangement. +.Pp +All numbers supplied as +.Dq parts +in a +.Ql \&. +notation +may be decimal, octal, or hexadecimal, as specified +in the C language (i.e., a leading 0x or 0X implies +hexadecimal; otherwise, a leading 0 implies octal; +otherwise, the number is interpreted as decimal). +.Sh SEE ALSO +.Xr byteorder 3 , +.Xr inet 3 , +.Xr networks 5 +.Sh HISTORY +The +.Fn inet_net_ntop +and +.Fn inet_net_pton +functions appeared in BIND 4.9.4. diff --git a/newlib/libc/sys/linux/net/inet_net_ntop.c b/newlib/libc/sys/linux/net/inet_net_ntop.c new file mode 100644 index 000000000..caa99f0ec --- /dev/null +++ b/newlib/libc/sys/linux/net/inet_net_ntop.c @@ -0,0 +1,148 @@ +/* + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static const char orig_rcsid[] = "From Id: inet_net_ntop.c,v 8.2 1996/08/08 06:54:44 vixie Exp"; +#endif +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> + +#include <errno.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> + +#ifdef SPRINTF_CHAR +# define SPRINTF(x) strlen(sprintf/**/x) +#else +# define SPRINTF(x) ((size_t)sprintf x) +#endif + +static char * inet_net_ntop_ipv4(const u_char *src, int bits, char *dst, + size_t size); + +/* + * char * + * inet_net_ntop(af, src, bits, dst, size) + * convert network number from network to presentation format. + * generates CIDR style result always. + * return: + * pointer to dst, or NULL if an error occurred (check errno). + * author: + * Paul Vixie (ISC), July 1996 + */ +char * +inet_net_ntop(af, src, bits, dst, size) + int af; + const void *src; + int bits; + char *dst; + size_t size; +{ + switch (af) { + case AF_INET: + return (inet_net_ntop_ipv4(src, bits, dst, size)); + default: + errno = EAFNOSUPPORT; + return (NULL); + } +} + +/* + * static char * + * inet_net_ntop_ipv4(src, bits, dst, size) + * convert IPv4 network number from network to presentation format. + * generates CIDR style result always. + * return: + * pointer to dst, or NULL if an error occurred (check errno). + * note: + * network byte order assumed. this means 192.5.5.240/28 has + * 0x11110000 in its fourth octet. + * author: + * Paul Vixie (ISC), July 1996 + */ +static char * +inet_net_ntop_ipv4(src, bits, dst, size) + const u_char *src; + int bits; + char *dst; + size_t size; +{ + char *odst = dst; + char *t; + u_int m; + int b; + + if (bits < 0 || bits > 32) { + errno = EINVAL; + return (NULL); + } + if (bits == 0) { + if (size < sizeof "0") + goto emsgsize; + *dst++ = '0'; + *dst = '\0'; + } + + /* Format whole octets. */ + for (b = bits / 8; b > 0; b--) { + if (size < sizeof "255.") + goto emsgsize; + t = dst; + dst += SPRINTF((dst, "%u", *src++)); + if (b > 1) { + *dst++ = '.'; + *dst = '\0'; + } + size -= (size_t)(dst - t); + } + + /* Format partial octet. */ + b = bits % 8; + if (b > 0) { + if (size < sizeof ".255") + goto emsgsize; + t = dst; + if (dst != odst) + *dst++ = '.'; + m = ((1 << b) - 1) << (8 - b); + dst += SPRINTF((dst, "%u", *src & m)); + size -= (size_t)(dst - t); + } + + /* Format CIDR /width. */ + if (size < sizeof "/32") + goto emsgsize; + dst += SPRINTF((dst, "/%u", bits)); + return (odst); + + emsgsize: + errno = EMSGSIZE; + return (NULL); +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <arpa/inet.h>. + */ +#undef inet_net_ntop +__weak_reference(__inet_net_ntop, inet_net_ntop); diff --git a/newlib/libc/sys/linux/net/inet_net_pton.c b/newlib/libc/sys/linux/net/inet_net_pton.c new file mode 100644 index 000000000..9386d0517 --- /dev/null +++ b/newlib/libc/sys/linux/net/inet_net_pton.c @@ -0,0 +1,214 @@ +/* + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static const char orig_rcsid[] = "From Id: inet_net_pton.c,v 1.8 1996/11/21 10:28:12 vixie Exp $"; +#endif +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> + +#include <assert.h> +#include <ctype.h> +#include <errno.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> + +#ifdef SPRINTF_CHAR +# define SPRINTF(x) strlen(sprintf/**/x) +#else +# define SPRINTF(x) ((size_t)sprintf x) +#endif + +static int inet_net_pton_ipv4(const char *src, u_char *dst, size_t size); + +/* + * static int + * inet_net_pton(af, src, dst, size) + * convert network number from presentation to network format. + * accepts hex octets, hex strings, decimal octets, and /CIDR. + * "size" is in bytes and describes "dst". + * return: + * number of bits, either imputed classfully or specified with /CIDR, + * or -1 if some failure occurred (check errno). ENOENT means it was + * not a valid network specification. + * author: + * Paul Vixie (ISC), June 1996 + */ +int +inet_net_pton(af, src, dst, size) + int af; + const char *src; + void *dst; + size_t size; +{ + switch (af) { + case AF_INET: + return (inet_net_pton_ipv4(src, dst, size)); + default: + errno = EAFNOSUPPORT; + return (-1); + } +} + +/* + * static int + * inet_net_pton_ipv4(src, dst, size) + * convert IPv4 network number from presentation to network format. + * accepts hex octets, hex strings, decimal octets, and /CIDR. + * "size" is in bytes and describes "dst". + * return: + * number of bits, either imputed classfully or specified with /CIDR, + * or -1 if some failure occurred (check errno). ENOENT means it was + * not an IPv4 network specification. + * note: + * network byte order assumed. this means 192.5.5.240/28 has + * 0x11110000 in its fourth octet. + * author: + * Paul Vixie (ISC), June 1996 + */ +static int +inet_net_pton_ipv4(src, dst, size) + const char *src; + u_char *dst; + size_t size; +{ + static const char + xdigits[] = "0123456789abcdef", + digits[] = "0123456789"; + int n, ch, tmp, dirty, bits; + const u_char *odst = dst; + + ch = *src++; + if (ch == '0' && (src[0] == 'x' || src[0] == 'X') + && isascii(src[1]) && isxdigit(src[1])) { + /* Hexadecimal: Eat nybble string. */ + if (size <= 0) + goto emsgsize; + *dst = 0, dirty = 0; + src++; /* skip x or X. */ + while ((ch = *src++) != '\0' && + isascii(ch) && isxdigit(ch)) { + if (isupper(ch)) + ch = tolower(ch); + n = strchr(xdigits, ch) - xdigits; + assert(n >= 0 && n <= 15); + *dst |= n; + if (!dirty++) + *dst <<= 4; + else if (size-- > 0) + *++dst = 0, dirty = 0; + else + goto emsgsize; + } + if (dirty) + size--; + } else if (isascii(ch) && isdigit(ch)) { + /* Decimal: eat dotted digit string. */ + for (;;) { + tmp = 0; + do { + n = strchr(digits, ch) - digits; + assert(n >= 0 && n <= 9); + tmp *= 10; + tmp += n; + if (tmp > 255) + goto enoent; + } while ((ch = *src++) != '\0' && + isascii(ch) && isdigit(ch)); + if (size-- <= 0) + goto emsgsize; + *dst++ = (u_char) tmp; + if (ch == '\0' || ch == '/') + break; + if (ch != '.') + goto enoent; + ch = *src++; + if (!isascii(ch) || !isdigit(ch)) + goto enoent; + } + } else + goto enoent; + + bits = -1; + if (ch == '/' && isascii(src[0]) && isdigit(src[0]) && dst > odst) { + /* CIDR width specifier. Nothing can follow it. */ + ch = *src++; /* Skip over the /. */ + bits = 0; + do { + n = strchr(digits, ch) - digits; + assert(n >= 0 && n <= 9); + bits *= 10; + bits += n; + } while ((ch = *src++) != '\0' && isascii(ch) && isdigit(ch)); + if (ch != '\0') + goto enoent; + if (bits > 32) + goto emsgsize; + } + + /* Firey death and destruction unless we prefetched EOS. */ + if (ch != '\0') + goto enoent; + + /* If nothing was written to the destination, we found no address. */ + if (dst == odst) + goto enoent; + /* If no CIDR spec was given, infer width from net class. */ + if (bits == -1) { + if (*odst >= 240) /* Class E */ + bits = 32; + else if (*odst >= 224) /* Class D */ + bits = 4; + else if (*odst >= 192) /* Class C */ + bits = 24; + else if (*odst >= 128) /* Class B */ + bits = 16; + else /* Class A */ + bits = 8; + /* If imputed mask is narrower than specified octets, widen. */ + if (bits >= 8 && bits < ((dst - odst) * 8)) + bits = (dst - odst) * 8; + } + /* Extend network to cover the actual mask. */ + while (bits > ((dst - odst) * 8)) { + if (size-- <= 0) + goto emsgsize; + *dst++ = '\0'; + } + return (bits); + + enoent: + errno = ENOENT; + return (-1); + + emsgsize: + errno = EMSGSIZE; + return (-1); +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <arpa/inet.h>. + */ +#undef inet_net_pton +__weak_reference(__inet_net_pton, inet_net_pton); diff --git a/newlib/libc/sys/linux/net/inet_neta.c b/newlib/libc/sys/linux/net/inet_neta.c new file mode 100644 index 000000000..c45578348 --- /dev/null +++ b/newlib/libc/sys/linux/net/inet_neta.c @@ -0,0 +1,92 @@ +/* + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static const char orig_rcsid[] = "From Id: inet_neta.c,v 8.2 1996/08/08 06:54:44 vixie Exp"; +#endif +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> + +#include <errno.h> +#include <stdio.h> +#include <string.h> + +#ifdef SPRINTF_CHAR +# define SPRINTF(x) strlen(sprintf/**/x) +#else +# define SPRINTF(x) ((size_t)sprintf x) +#endif + +/* + * char * + * inet_neta(src, dst, size) + * format a in_addr_t network number into presentation format. + * return: + * pointer to dst, or NULL if an error occurred (check errno). + * note: + * format of ``src'' is as for inet_network(). + * author: + * Paul Vixie (ISC), July 1996 + */ +char * +inet_neta(src, dst, size) + in_addr_t src; + char *dst; + size_t size; +{ + char *odst = dst; + char *tp; + + while (src & 0xffffffff) { + u_char b = (src & 0xff000000) >> 24; + + src <<= 8; + if (b) { + if (size < sizeof "255.") + goto emsgsize; + tp = dst; + dst += SPRINTF((dst, "%u", b)); + if (src != 0L) { + *dst++ = '.'; + *dst = '\0'; + } + size -= (size_t)(dst - tp); + } + } + if (dst == odst) { + if (size < sizeof "0.0.0.0") + goto emsgsize; + strcpy(dst, "0.0.0.0"); + } + return (odst); + + emsgsize: + errno = EMSGSIZE; + return (NULL); +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <arpa/inet.h>. + */ +#undef inet_neta +__weak_reference(__inet_neta, inet_neta); diff --git a/newlib/libc/sys/linux/net/inet_netof.c b/newlib/libc/sys/linux/net/inet_netof.c new file mode 100644 index 000000000..e2e84d340 --- /dev/null +++ b/newlib/libc/sys/linux/net/inet_netof.c @@ -0,0 +1,68 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)inet_netof.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> +#include <machine/endian.h> + +#include <sys/param.h> +#include <netinet/in.h> +#include <arpa/inet.h> + +/* + * Return the network number from an internet + * address; handles class a/b/c network #'s. + */ +in_addr_t +inet_netof(in) + struct in_addr in; +{ + in_addr_t i = ntohl(in.s_addr); + + if (IN_CLASSA(i)) + return (((i)&IN_CLASSA_NET) >> IN_CLASSA_NSHIFT); + else if (IN_CLASSB(i)) + return (((i)&IN_CLASSB_NET) >> IN_CLASSB_NSHIFT); + else + return (((i)&IN_CLASSC_NET) >> IN_CLASSC_NSHIFT); +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <arpa/inet.h>. + */ +#undef inet_netof +__weak_reference(__inet_netof, inet_netof); diff --git a/newlib/libc/sys/linux/net/inet_network.c b/newlib/libc/sys/linux/net/inet_network.c new file mode 100644 index 000000000..caf1d7869 --- /dev/null +++ b/newlib/libc/sys/linux/net/inet_network.c @@ -0,0 +1,100 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)inet_network.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <ctype.h> + +/* + * Internet network address interpretation routine. + * The library routines call this routine to interpret + * network numbers. + */ +in_addr_t +inet_network(cp) + const char *cp; +{ + in_addr_t val, base, n; + char c; + in_addr_t parts[4], *pp = parts; + int i; + +again: + val = 0; base = 10; + if (*cp == '0') + base = 8, cp++; + if (*cp == 'x' || *cp == 'X') + base = 16, cp++; + while ((c = *cp) != 0) { + if (isdigit((unsigned char)c)) { + val = (val * base) + (c - '0'); + cp++; + continue; + } + if (base == 16 && isxdigit((unsigned char)c)) { + val = (val << 4) + (c + 10 - (islower((unsigned char)c) ? 'a' : 'A')); + cp++; + continue; + } + break; + } + if (*cp == '.') { + if (pp >= parts + 3) + return (INADDR_NONE); + *pp++ = val, cp++; + goto again; + } + if (*cp && !isspace((unsigned char)*cp)) + return (INADDR_NONE); + *pp++ = val; + n = pp - parts; + for (val = 0, i = 0; i < n; i++) { + val <<= 8; + val |= parts[i] & 0xff; + } + return (val); +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <arpa/inet.h>. + */ +#undef inet_network +__weak_reference(__inet_network, inet_network); diff --git a/newlib/libc/sys/linux/net/inet_ntoa.c b/newlib/libc/sys/linux/net/inet_ntoa.c new file mode 100644 index 000000000..dedc4768d --- /dev/null +++ b/newlib/libc/sys/linux/net/inet_ntoa.c @@ -0,0 +1,67 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)inet_ntoa.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <stdio.h> +#include <string.h> + +/* + * Convert network-format internet address + * to base 256 d.d.d.d representation. + */ +char * +inet_ntoa(in) + struct in_addr in; +{ + static char ret[18]; + + strcpy(ret, "[inet_ntoa error]"); + (void) inet_ntop(AF_INET, &in, ret, sizeof ret); + return (ret); +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <arpa/inet.h>. + */ +#undef inet_ntoa +__weak_reference(__inet_ntoa, inet_ntoa); diff --git a/newlib/libc/sys/linux/net/inet_ntop.c b/newlib/libc/sys/linux/net/inet_ntop.c new file mode 100644 index 000000000..31746e456 --- /dev/null +++ b/newlib/libc/sys/linux/net/inet_ntop.c @@ -0,0 +1,200 @@ +/* Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$Id$"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/param.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> +#include <errno.h> +#include <stdio.h> +#include <string.h> + +#define SPRINTF(x) ((socklen_t)sprintf x) + +/* + * WARNING: Don't even consider trying to compile this on a system where + * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX. + */ + +static const char *inet_ntop4(const u_char *src, char *dst, socklen_t size); +static const char *inet_ntop6(const u_char *src, char *dst, socklen_t size); + +/* char * + * inet_ntop(af, src, dst, size) + * convert a network format address to presentation format. + * return: + * pointer to presentation format address (`dst'), or NULL (see errno). + * author: + * Paul Vixie, 1996. + */ +const char * +inet_ntop(af, src, dst, size) + int af; + const void *src; + char *dst; + socklen_t size; +{ + switch (af) { + case AF_INET: + return (inet_ntop4(src, dst, size)); + case AF_INET6: + return (inet_ntop6(src, dst, size)); + default: + errno = EAFNOSUPPORT; + return (NULL); + } + /* NOTREACHED */ +} + +/* const char * + * inet_ntop4(src, dst, size) + * format an IPv4 address, more or less like inet_ntoa() + * return: + * `dst' (as a const) + * notes: + * (1) uses no statics + * (2) takes a u_char* not an in_addr as input + * author: + * Paul Vixie, 1996. + */ +static const char * +inet_ntop4(src, dst, size) + const u_char *src; + char *dst; + socklen_t size; +{ + static const char fmt[] = "%u.%u.%u.%u"; + char tmp[sizeof "255.255.255.255"]; + + if (SPRINTF((tmp, fmt, src[0], src[1], src[2], src[3])) > size) { + errno = ENOSPC; + return (NULL); + } + strcpy(dst, tmp); + return (dst); +} + +/* const char * + * inet_ntop6(src, dst, size) + * convert IPv6 binary address into presentation (printable) format + * author: + * Paul Vixie, 1996. + */ +static const char * +inet_ntop6(src, dst, size) + const u_char *src; + char *dst; + socklen_t size; +{ + /* + * Note that int32_t and int16_t need only be "at least" large enough + * to contain a value of the specified size. On some systems, like + * Crays, there is no such thing as an integer variable with 16 bits. + * Keep this in mind if you think this function should have been coded + * to use pointer overlays. All the world's not a VAX. + */ + char tmp[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"], *tp; + struct { int base, len; } best, cur; + u_int words[NS_IN6ADDRSZ / NS_INT16SZ]; + int i; + + /* + * Preprocess: + * Copy the input (bytewise) array into a wordwise array. + * Find the longest run of 0x00's in src[] for :: shorthanding. + */ + memset(words, '\0', sizeof words); + for (i = 0; i < NS_IN6ADDRSZ; i++) + words[i / 2] |= (src[i] << ((1 - (i % 2)) << 3)); + best.base = -1; + cur.base = -1; + for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ); i++) { + if (words[i] == 0) { + if (cur.base == -1) + cur.base = i, cur.len = 1; + else + cur.len++; + } else { + if (cur.base != -1) { + if (best.base == -1 || cur.len > best.len) + best = cur; + cur.base = -1; + } + } + } + if (cur.base != -1) { + if (best.base == -1 || cur.len > best.len) + best = cur; + } + if (best.base != -1 && best.len < 2) + best.base = -1; + + /* + * Format the result. + */ + tp = tmp; + for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ); i++) { + /* Are we inside the best run of 0x00's? */ + if (best.base != -1 && i >= best.base && + i < (best.base + best.len)) { + if (i == best.base) + *tp++ = ':'; + continue; + } + /* Are we following an initial run of 0x00s or any real hex? */ + if (i != 0) + *tp++ = ':'; + /* Is this address an encapsulated IPv4? */ + if (i == 6 && best.base == 0 && + (best.len == 6 || (best.len == 5 && words[5] == 0xffff))) { + if (!inet_ntop4(src+12, tp, sizeof tmp - (tp - tmp))) + return (NULL); + tp += strlen(tp); + break; + } + tp += SPRINTF((tp, "%x", words[i])); + } + /* Was it a trailing run of 0x00's? */ + if (best.base != -1 && (best.base + best.len) == + (NS_IN6ADDRSZ / NS_INT16SZ)) + *tp++ = ':'; + *tp++ = '\0'; + + /* + * Check for overflow, copy, and we're done. + */ + if ((socklen_t)(tp - tmp) > size) { + errno = ENOSPC; + return (NULL); + } + strcpy(dst, tmp); + return (dst); +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <arpa/inet.h>. + */ +#undef inet_ntop +__weak_reference(__inet_ntop, inet_ntop); diff --git a/newlib/libc/sys/linux/net/inet_pton.c b/newlib/libc/sys/linux/net/inet_pton.c new file mode 100644 index 000000000..eeabbb481 --- /dev/null +++ b/newlib/libc/sys/linux/net/inet_pton.c @@ -0,0 +1,222 @@ +/* $KAME: inet_pton.c,v 1.5 2001/08/20 02:32:40 itojun Exp $ */ + +/* Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/param.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> +#include <string.h> +#include <errno.h> + +/* + * WARNING: Don't even consider trying to compile this on a system where + * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX. + */ + +static int inet_pton4(const char *src, u_char *dst); +static int inet_pton6(const char *src, u_char *dst); + +/* int + * inet_pton(af, src, dst) + * convert from presentation format (which usually means ASCII printable) + * to network format (which is usually some kind of binary format). + * return: + * 1 if the address was valid for the specified address family + * 0 if the address wasn't valid (`dst' is untouched in this case) + * -1 if some other error occurred (`dst' is untouched in this case, too) + * author: + * Paul Vixie, 1996. + */ +int +inet_pton(af, src, dst) + int af; + const char *src; + void *dst; +{ + switch (af) { + case AF_INET: + return (inet_pton4(src, dst)); + case AF_INET6: + return (inet_pton6(src, dst)); + default: + errno = EAFNOSUPPORT; + return (-1); + } + /* NOTREACHED */ +} + +/* int + * inet_pton4(src, dst) + * like inet_aton() but without all the hexadecimal and shorthand. + * return: + * 1 if `src' is a valid dotted quad, else 0. + * notice: + * does not touch `dst' unless it's returning 1. + * author: + * Paul Vixie, 1996. + */ +static int +inet_pton4(src, dst) + const char *src; + u_char *dst; +{ + static const char digits[] = "0123456789"; + int saw_digit, octets, ch; + u_char tmp[NS_INADDRSZ], *tp; + + saw_digit = 0; + octets = 0; + *(tp = tmp) = 0; + while ((ch = *src++) != '\0') { + const char *pch; + + if ((pch = strchr(digits, ch)) != NULL) { + u_int new = *tp * 10 + (pch - digits); + + if (new > 255) + return (0); + *tp = new; + if (! saw_digit) { + if (++octets > 4) + return (0); + saw_digit = 1; + } + } else if (ch == '.' && saw_digit) { + if (octets == 4) + return (0); + *++tp = 0; + saw_digit = 0; + } else + return (0); + } + if (octets < 4) + return (0); + + memcpy(dst, tmp, NS_INADDRSZ); + return (1); +} + +/* int + * inet_pton6(src, dst) + * convert presentation level address to network order binary form. + * return: + * 1 if `src' is a valid [RFC1884 2.2] address, else 0. + * notice: + * (1) does not touch `dst' unless it's returning 1. + * (2) :: in a full address is silently ignored. + * credit: + * inspired by Mark Andrews. + * author: + * Paul Vixie, 1996. + */ +static int +inet_pton6(src, dst) + const char *src; + u_char *dst; +{ + static const char xdigits_l[] = "0123456789abcdef", + xdigits_u[] = "0123456789ABCDEF"; + u_char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp; + const char *xdigits, *curtok; + int ch, saw_xdigit; + u_int val; + + memset((tp = tmp), '\0', NS_IN6ADDRSZ); + endp = tp + NS_IN6ADDRSZ; + colonp = NULL; + /* Leading :: requires some special handling. */ + if (*src == ':') + if (*++src != ':') + return (0); + curtok = src; + saw_xdigit = 0; + val = 0; + while ((ch = *src++) != '\0') { + const char *pch; + + if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL) + pch = strchr((xdigits = xdigits_u), ch); + if (pch != NULL) { + val <<= 4; + val |= (pch - xdigits); + if (val > 0xffff) + return (0); + saw_xdigit = 1; + continue; + } + if (ch == ':') { + curtok = src; + if (!saw_xdigit) { + if (colonp) + return (0); + colonp = tp; + continue; + } + if (tp + NS_INT16SZ > endp) + return (0); + *tp++ = (u_char) (val >> 8) & 0xff; + *tp++ = (u_char) val & 0xff; + saw_xdigit = 0; + val = 0; + continue; + } + if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) && + inet_pton4(curtok, tp) > 0) { + tp += NS_INADDRSZ; + saw_xdigit = 0; + break; /* '\0' was seen by inet_pton4(). */ + } + return (0); + } + if (saw_xdigit) { + if (tp + NS_INT16SZ > endp) + return (0); + *tp++ = (u_char) (val >> 8) & 0xff; + *tp++ = (u_char) val & 0xff; + } + if (colonp != NULL) { + /* + * Since some memmove()'s erroneously fail to handle + * overlapping regions, we'll do the shift by hand. + */ + const int n = tp - colonp; + int i; + + for (i = 1; i <= n; i++) { + endp[- i] = colonp[n - i]; + colonp[n - i] = 0; + } + tp = endp; + } + if (tp != endp) + return (0); + memcpy(dst, tmp, NS_IN6ADDRSZ); + return (1); +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <arpa/inet.h>. + */ +#undef inet_pton +__weak_reference(__inet_pton, inet_pton); diff --git a/newlib/libc/sys/linux/net/innetgr-stub.c b/newlib/libc/sys/linux/net/innetgr-stub.c new file mode 100644 index 000000000..690d82e14 --- /dev/null +++ b/newlib/libc/sys/linux/net/innetgr-stub.c @@ -0,0 +1,7 @@ +int +innetgr(const char *netgroup, const char *host, const char *user, + const char *domain) +{ + return 0; +} + diff --git a/newlib/libc/sys/linux/net/ip6opt.c b/newlib/libc/sys/linux/net/ip6opt.c new file mode 100644 index 000000000..f3f51d507 --- /dev/null +++ b/newlib/libc/sys/linux/net/ip6opt.c @@ -0,0 +1,387 @@ +/* + * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/param.h> +#include <sys/types.h> +#include <sys/socket.h> + +#include <netinet/in.h> +#include <netinet/ip6.h> + +#include <string.h> +#include <stdio.h> + +static int ip6optlen(u_int8_t *opt, u_int8_t *lim); +static void inet6_insert_padopt(u_char *p, int len); + +/* + * This function returns the number of bytes required to hold an option + * when it is stored as ancillary data, including the cmsghdr structure + * at the beginning, and any padding at the end (to make its size a + * multiple of 8 bytes). The argument is the size of the structure + * defining the option, which must include any pad bytes at the + * beginning (the value y in the alignment term "xn + y"), the type + * byte, the length byte, and the option data. + */ +int +inet6_option_space(nbytes) + int nbytes; +{ + nbytes += 2; /* we need space for nxt-hdr and length fields */ + return(CMSG_SPACE((nbytes + 7) & ~7)); +} + +/* + * This function is called once per ancillary data object that will + * contain either Hop-by-Hop or Destination options. It returns 0 on + * success or -1 on an error. + */ +int +inet6_option_init(bp, cmsgp, type) + void *bp; + struct cmsghdr **cmsgp; + int type; +{ + struct cmsghdr *ch = (struct cmsghdr *)bp; + + /* argument validation */ + if (type != IPV6_HOPOPTS && type != IPV6_DSTOPTS) + return(-1); + + ch->cmsg_level = IPPROTO_IPV6; + ch->cmsg_type = type; + ch->cmsg_len = CMSG_LEN(0); + + *cmsgp = ch; + return(0); +} + +/* + * This function appends a Hop-by-Hop option or a Destination option + * into an ancillary data object that has been initialized by + * inet6_option_init(). This function returns 0 if it succeeds or -1 on + * an error. + * multx is the value x in the alignment term "xn + y" described + * earlier. It must have a value of 1, 2, 4, or 8. + * plusy is the value y in the alignment term "xn + y" described + * earlier. It must have a value between 0 and 7, inclusive. + */ +int +inet6_option_append(cmsg, typep, multx, plusy) + struct cmsghdr *cmsg; + const u_int8_t *typep; + int multx; + int plusy; +{ + int padlen, optlen, off; + u_char *bp = (u_char *)cmsg + cmsg->cmsg_len; + struct ip6_ext *eh = (struct ip6_ext *)CMSG_DATA(cmsg); + + /* argument validation */ + if (multx != 1 && multx != 2 && multx != 4 && multx != 8) + return(-1); + if (plusy < 0 || plusy > 7) + return(-1); + if (typep[0] > 255) + return(-1); + + /* + * If this is the first option, allocate space for the + * first 2 bytes(for next header and length fields) of + * the option header. + */ + if (bp == (u_char *)eh) { + bp += 2; + cmsg->cmsg_len += 2; + } + + /* calculate pad length before the option. */ + off = bp - (u_char *)eh; + padlen = (((off % multx) + (multx - 1)) & ~(multx - 1)) - + (off % multx); + padlen += plusy; + /* insert padding */ + inet6_insert_padopt(bp, padlen); + cmsg->cmsg_len += padlen; + bp += padlen; + + /* copy the option */ + if (typep[0] == IP6OPT_PAD1) + optlen = 1; + else + optlen = typep[1] + 2; + memcpy(bp, typep, optlen); + bp += optlen; + cmsg->cmsg_len += optlen; + + /* calculate pad length after the option and insert the padding */ + off = bp - (u_char *)eh; + padlen = ((off + 7) & ~7) - off; + inet6_insert_padopt(bp, padlen); + bp += padlen; + cmsg->cmsg_len += padlen; + + /* update the length field of the ip6 option header */ + eh->ip6e_len = ((bp - (u_char *)eh) >> 3) - 1; + + return(0); +} + +/* + * This function appends a Hop-by-Hop option or a Destination option + * into an ancillary data object that has been initialized by + * inet6_option_init(). This function returns a pointer to the 8-bit + * option type field that starts the option on success, or NULL on an + * error. + * The difference between this function and inet6_option_append() is + * that the latter copies the contents of a previously built option into + * the ancillary data object while the current function returns a + * pointer to the space in the data object where the option's TLV must + * then be built by the caller. + * + */ +u_int8_t * +inet6_option_alloc(cmsg, datalen, multx, plusy) + struct cmsghdr *cmsg; + int datalen; + int multx; + int plusy; +{ + int padlen, off; + u_int8_t *bp = (u_char *)cmsg + cmsg->cmsg_len; + u_int8_t *retval; + struct ip6_ext *eh = (struct ip6_ext *)CMSG_DATA(cmsg); + + /* argument validation */ + if (multx != 1 && multx != 2 && multx != 4 && multx != 8) + return(NULL); + if (plusy < 0 || plusy > 7) + return(NULL); + + /* + * If this is the first option, allocate space for the + * first 2 bytes(for next header and length fields) of + * the option header. + */ + if (bp == (u_char *)eh) { + bp += 2; + cmsg->cmsg_len += 2; + } + + /* calculate pad length before the option. */ + off = bp - (u_char *)eh; + padlen = (((off % multx) + (multx - 1)) & ~(multx - 1)) - + (off % multx); + padlen += plusy; + /* insert padding */ + inet6_insert_padopt(bp, padlen); + cmsg->cmsg_len += padlen; + bp += padlen; + + /* keep space to store specified length of data */ + retval = bp; + bp += datalen; + cmsg->cmsg_len += datalen; + + /* calculate pad length after the option and insert the padding */ + off = bp - (u_char *)eh; + padlen = ((off + 7) & ~7) - off; + inet6_insert_padopt(bp, padlen); + bp += padlen; + cmsg->cmsg_len += padlen; + + /* update the length field of the ip6 option header */ + eh->ip6e_len = ((bp - (u_char *)eh) >> 3) - 1; + + return(retval); +} + +/* + * This function processes the next Hop-by-Hop option or Destination + * option in an ancillary data object. If another option remains to be + * processed, the return value of the function is 0 and *tptrp points to + * the 8-bit option type field (which is followed by the 8-bit option + * data length, followed by the option data). If no more options remain + * to be processed, the return value is -1 and *tptrp is NULL. If an + * error occurs, the return value is -1 and *tptrp is not NULL. + * (RFC 2292, 6.3.5) + */ +int +inet6_option_next(cmsg, tptrp) + const struct cmsghdr *cmsg; + u_int8_t **tptrp; +{ + struct ip6_ext *ip6e; + int hdrlen, optlen; + u_int8_t *lim; + + if (cmsg->cmsg_level != IPPROTO_IPV6 || + (cmsg->cmsg_type != IPV6_HOPOPTS && + cmsg->cmsg_type != IPV6_DSTOPTS)) + return(-1); + + /* message length validation */ + if (cmsg->cmsg_len < CMSG_SPACE(sizeof(struct ip6_ext))) + return(-1); + ip6e = (struct ip6_ext *)CMSG_DATA(cmsg); + hdrlen = (ip6e->ip6e_len + 1) << 3; + if (cmsg->cmsg_len < CMSG_SPACE(hdrlen)) + return(-1); + + /* + * If the caller does not specify the starting point, + * simply return the 1st option. + * Otherwise, search the option list for the next option. + */ + lim = (u_int8_t *)ip6e + hdrlen; + if (*tptrp == NULL) + *tptrp = (u_int8_t *)(ip6e + 1); + else { + if ((optlen = ip6optlen(*tptrp, lim)) == 0) + return(-1); + + *tptrp = *tptrp + optlen; + } + if (*tptrp >= lim) { /* there is no option */ + *tptrp = NULL; + return(-1); + } + /* + * Finally, checks if the next option is safely stored in the + * cmsg data. + */ + if (ip6optlen(*tptrp, lim) == 0) + return(-1); + else + return(0); +} + +/* + * This function is similar to the inet6_option_next() function, + * except this function lets the caller specify the option type to be + * searched for, instead of always returning the next option in the + * ancillary data object. + * Note: RFC 2292 says the type of tptrp is u_int8_t *, but we think + * it's a typo. The variable should be type of u_int8_t **. + */ +int +inet6_option_find(cmsg, tptrp, type) + const struct cmsghdr *cmsg; + u_int8_t **tptrp; + int type; +{ + struct ip6_ext *ip6e; + int hdrlen, optlen; + u_int8_t *optp, *lim; + + if (cmsg->cmsg_level != IPPROTO_IPV6 || + (cmsg->cmsg_type != IPV6_HOPOPTS && + cmsg->cmsg_type != IPV6_DSTOPTS)) + return(-1); + + /* message length validation */ + if (cmsg->cmsg_len < CMSG_SPACE(sizeof(struct ip6_ext))) + return(-1); + ip6e = (struct ip6_ext *)CMSG_DATA(cmsg); + hdrlen = (ip6e->ip6e_len + 1) << 3; + if (cmsg->cmsg_len < CMSG_SPACE(hdrlen)) + return(-1); + + /* + * If the caller does not specify the starting point, + * search from the beginning of the option list. + * Otherwise, search from *the next option* of the specified point. + */ + lim = (u_int8_t *)ip6e + hdrlen; + if (*tptrp == NULL) + *tptrp = (u_int8_t *)(ip6e + 1); + else { + if ((optlen = ip6optlen(*tptrp, lim)) == 0) + return(-1); + + *tptrp = *tptrp + optlen; + } + for (optp = *tptrp; optp < lim; optp += optlen) { + if (*optp == type) { + *tptrp = optp; + return(0); + } + if ((optlen = ip6optlen(optp, lim)) == 0) + return(-1); + } + + /* search failed */ + *tptrp = NULL; + return(-1); +} + +/* + * Calculate the length of a given IPv6 option. Also checks + * if the option is safely stored in user's buffer according to the + * calculated length and the limitation of the buffer. + */ +static int +ip6optlen(opt, lim) + u_int8_t *opt, *lim; +{ + int optlen; + + if (*opt == IP6OPT_PAD1) + optlen = 1; + else { + /* is there enough space to store type and len? */ + if (opt + 2 > lim) + return(0); + optlen = *(opt + 1) + 2; + } + if (opt + optlen <= lim) + return(optlen); + + return(0); +} + +static void +inet6_insert_padopt(u_char *p, int len) +{ + switch(len) { + case 0: + return; + case 1: + p[0] = IP6OPT_PAD1; + return; + default: + p[0] = IP6OPT_PADN; + p[1] = len - 2; + memset(&p[2], 0, len - 2); + return; + } +} diff --git a/newlib/libc/sys/linux/net/iso_addr.3 b/newlib/libc/sys/linux/net/iso_addr.3 new file mode 100644 index 000000000..dc843c315 --- /dev/null +++ b/newlib/libc/sys/linux/net/iso_addr.3 @@ -0,0 +1,113 @@ +.\" Copyright (c) 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)iso_addr.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD: src/lib/libc/net/iso_addr.3,v 1.7 2001/10/01 16:08:56 ru Exp $ +.\" +.Dd June 4, 1993 +.Dt ISO_ADDR 3 +.Os +.Sh NAME +.Nm iso_addr , +.Nm iso_ntoa +.Nd "elementary network address conversion routines for Open System Interconnection +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In netiso/iso.h +.Ft struct iso_addr * +.Fn iso_addr "char *cp" +.Ft char * +.Fn iso_ntoa "struct iso_addr *isoa" +.Sh DESCRIPTION +The routine +.Fn iso_addr +interprets character strings representing +.Tn OSI +addresses, returning binary information suitable +for use in system calls. +The routine +.Fn iso_ntoa +takes +.Tn OSI +addresses and returns +.Tn ASCII +strings representing NSAPs (network service +access points) in a +notation inverse to that accepted by +.Fn iso_addr . +.Pp +Unfortunately, no universal standard exists for representing +.Tn OSI +network addresses. +.Pp +The format employed by +.Fn iso_addr +is a sequence of hexadecimal +.Dq digits +(optionally separated by periods), +of the form: +.Bd -ragged -offset indent +<hex digits>.<hex digits>.<hex digits> +.Ed +.Pp +Each pair of hexadecimal digits represents a byte +with the leading digit indicating the higher-ordered bits. +A period following an even number of bytes has no +effect (but may be used to increase legibility). +A period following an odd number of bytes has the +effect of causing the byte of address being translated +to have its higher order bits filled with zeros. +.Sh RETURN VALUES +.Fn iso_ntoa +always returns a null terminated string. +.Fn iso_addr +always returns a pointer to a struct iso_addr. +(See +.Sx BUGS . ) +.Sh SEE ALSO +.Xr iso 4 +.Sh HISTORY +The +.Fn iso_addr +and +.Fn iso_ntoa +functions appeared in +.Bx 4.3 Reno . +.Sh BUGS +The returned values +reside in a static memory area. +.Pp +The function +.Fn iso_addr +should diagnose improperly formed input, and there should be an unambiguous +way to recognize this. diff --git a/newlib/libc/sys/linux/net/iso_addr.c b/newlib/libc/sys/linux/net/iso_addr.c new file mode 100644 index 000000000..e943122f8 --- /dev/null +++ b/newlib/libc/sys/linux/net/iso_addr.c @@ -0,0 +1,119 @@ +/* + * Copyright (c) 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)iso_addr.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <netiso/iso.h> +#include <string.h> + +/* States*/ +#define VIRGIN 0 +#define GOTONE 1 +#define GOTTWO 2 +/* Inputs */ +#define DIGIT (4*0) +#define END (4*1) +#define DELIM (4*2) + +struct iso_addr * +iso_addr(addr) + const char *addr; +{ + static struct iso_addr out_addr; + char *cp = out_addr.isoa_genaddr; + char *cplim = cp + sizeof(out_addr.isoa_genaddr); + int byte = 0, state = VIRGIN, new; + + bzero((char *)&out_addr, sizeof(out_addr)); + do { + if ((*addr >= '0') && (*addr <= '9')) { + new = *addr - '0'; + } else if ((*addr >= 'a') && (*addr <= 'f')) { + new = *addr - 'a' + 10; + } else if ((*addr >= 'A') && (*addr <= 'F')) { + new = *addr - 'A' + 10; + } else if (*addr == 0) + state |= END; + else + state |= DELIM; + addr++; + switch (state /* | INPUT */) { + case GOTTWO | DIGIT: + *cp++ = byte; /*FALLTHROUGH*/ + case VIRGIN | DIGIT: + state = GOTONE; byte = new; continue; + case GOTONE | DIGIT: + state = GOTTWO; byte = new + (byte << 4); continue; + default: /* | DELIM */ + state = VIRGIN; *cp++ = byte; byte = 0; continue; + case GOTONE | END: + case GOTTWO | END: + *cp++ = byte; /* FALLTHROUGH */ + case VIRGIN | END: + break; + } + break; + } while (cp < cplim); + out_addr.isoa_len = cp - out_addr.isoa_genaddr; + return (&out_addr); +} + +static char hexlist[] = "0123456789abcdef"; + +char * +iso_ntoa(isoa) + const struct iso_addr *isoa; +{ + static char tmpbuf[sizeof(isoa->isoa_genaddr)*3]; + const u_char *binary; + char *cp; + int i; + + binary = isoa->isoa_genaddr; + cp = tmpbuf; + + for (i = 0; i < isoa->isoa_len; i++) { + *cp++ = hexlist[*binary >> 4]; + *cp++ = hexlist[*binary++ & 0xf]; + + if ((((i % 2) == 0) && ((i + 1) < isoa->isoa_len))) + *cp++ = '.'; + } + *cp = '\0'; + return tmpbuf; +} diff --git a/newlib/libc/sys/linux/net/issetugid-stub.c b/newlib/libc/sys/linux/net/issetugid-stub.c new file mode 100644 index 000000000..b3aac0b63 --- /dev/null +++ b/newlib/libc/sys/linux/net/issetugid-stub.c @@ -0,0 +1,5 @@ +int +issetugid(void) +{ + return 0; +} diff --git a/newlib/libc/sys/linux/net/linkaddr.3 b/newlib/libc/sys/linux/net/linkaddr.3 new file mode 100644 index 000000000..1d664630b --- /dev/null +++ b/newlib/libc/sys/linux/net/linkaddr.3 @@ -0,0 +1,140 @@ +.\" Copyright (c) 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Donn Seeley at BSDI. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" From: @(#)linkaddr.3 8.1 (Berkeley) 7/28/93 +.\" $FreeBSD: src/lib/libc/net/linkaddr.3,v 1.12 2001/10/01 16:08:56 ru Exp $ +.\" +.Dd June 17, 1996 +.Dt LINK_ADDR 3 +.Os +.Sh NAME +.Nm link_addr , +.Nm link_ntoa +.Nd elementary address specification routines for link level access +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/socket.h +.In net/if_dl.h +.Ft void +.Fn link_addr "const char *addr" "struct sockaddr_dl *sdl" +.Ft char * +.Fn link_ntoa "const struct sockaddr_dl *sdl" +.Sh DESCRIPTION +The routine +.Fn link_addr +interprets character strings representing +link-level addresses, returning binary information suitable +for use in system calls. +The routine +.Fn link_ntoa +takes +a link-level +address and returns an +.Tn ASCII +string representing some of the information present, +including the link level address itself, and the interface name +or number, if present. +This facility is experimental and is +still subject to change. +.Pp +For +.Fn link_addr , +the string +.Fa addr +may contain +an optional network interface identifier of the form +.Dq "name unit-number" , +suitable for the first argument to +.Xr ifconfig 8 , +followed in all cases by a colon and +an interface address in the form of +groups of hexadecimal digits +separated by periods. +Each group represents a byte of address; +address bytes are filled left to right from +low order bytes through high order bytes. +.Pp +.\" A regular expression may make this format clearer: +.\" .Bd -literal -offset indent +.\" ([a-z]+[0-9]+:)?[0-9a-f]+(\e.[0-9a-f]+)* +.\" .Ed +.\" .Pp +Thus +.Li le0:8.0.9.13.d.30 +represents an ethernet address +to be transmitted on the first Lance ethernet interface. +.Pp +The direct use of these functions is deprecated in favor of the +.Xr addr2ascii 3 +interface; however, portable programs cannot rely on the latter as it is +not yet widely implemented. +.Sh RETURN VALUES +.Fn link_ntoa +always returns a null terminated string. +.Fn link_addr +has no return value. +(See +.Sx BUGS . ) +.Sh SEE ALSO +.Xr addr2ascii 3 +.\" .Xr iso 4 +.Sh HISTORY +The +.Fn link_addr +and +.Fn link_ntoa +functions appeared in +.Bx 4.3 Reno . +.Sh BUGS +The returned values for link_ntoa +reside in a static memory area. +.Pp +The function +.Fn link_addr +should diagnose improperly formed input, and there should be an unambiguous +way to recognize this. +.Pp +If the +.Va sdl_len +field of the link socket address +.Fa sdl +is 0, +.Fn link_ntoa +will not insert a colon before the interface address bytes. +If this translated address is given to +.Fn link_addr +without inserting an initial colon, +the latter will not interpret it correctly. diff --git a/newlib/libc/sys/linux/net/linkaddr.c b/newlib/libc/sys/linux/net/linkaddr.c new file mode 100644 index 000000000..deeaa09ea --- /dev/null +++ b/newlib/libc/sys/linux/net/linkaddr.c @@ -0,0 +1,160 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)linkaddr.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <sys/socket.h> +#include <net/if_dl.h> +#include <string.h> + +/* States*/ +#define NAMING 0 +#define GOTONE 1 +#define GOTTWO 2 +#define RESET 3 +/* Inputs */ +#define DIGIT (4*0) +#define END (4*1) +#define DELIM (4*2) +#define LETTER (4*3) + +void +link_addr(addr, sdl) + const char *addr; + struct sockaddr_dl *sdl; +{ + char *cp = sdl->sdl_data; + char *cplim = sdl->sdl_len + (char *)sdl; + int byte = 0, state = NAMING, new = 0; + + bzero((char *)&sdl->sdl_family, sdl->sdl_len - 1); + sdl->sdl_family = AF_INET; + do { + state &= ~LETTER; + if ((*addr >= '0') && (*addr <= '9')) { + new = *addr - '0'; + } else if ((*addr >= 'a') && (*addr <= 'f')) { + new = *addr - 'a' + 10; + } else if ((*addr >= 'A') && (*addr <= 'F')) { + new = *addr - 'A' + 10; + } else if (*addr == 0) { + state |= END; + } else if (state == NAMING && + (((*addr >= 'A') && (*addr <= 'Z')) || + ((*addr >= 'a') && (*addr <= 'z')))) + state |= LETTER; + else + state |= DELIM; + addr++; + switch (state /* | INPUT */) { + case NAMING | DIGIT: + case NAMING | LETTER: + *cp++ = addr[-1]; + continue; + case NAMING | DELIM: + state = RESET; + sdl->sdl_nlen = cp - sdl->sdl_data; + continue; + case GOTTWO | DIGIT: + *cp++ = byte; + /* FALLTHROUGH */ + case RESET | DIGIT: + state = GOTONE; + byte = new; + continue; + case GOTONE | DIGIT: + state = GOTTWO; + byte = new + (byte << 4); + continue; + default: /* | DELIM */ + state = RESET; + *cp++ = byte; + byte = 0; + continue; + case GOTONE | END: + case GOTTWO | END: + *cp++ = byte; + /* FALLTHROUGH */ + case RESET | END: + break; + } + break; + } while (cp < cplim); + sdl->sdl_alen = cp - LLADDR(sdl); + new = cp - (char *)sdl; + if (new > sizeof(*sdl)) + sdl->sdl_len = new; + return; +} + +static char hexlist[] = "0123456789abcdef"; + +char * +link_ntoa(sdl) + const struct sockaddr_dl *sdl; +{ + static char obuf[64]; + char *out = obuf; + int i; + u_char *in = (u_char *)LLADDR(sdl); + u_char *inlim = in + sdl->sdl_alen; + int firsttime = 1; + + if (sdl->sdl_nlen) { + bcopy(sdl->sdl_data, obuf, sdl->sdl_nlen); + out += sdl->sdl_nlen; + if (sdl->sdl_alen) + *out++ = ':'; + } + while (in < inlim) { + if (firsttime) + firsttime = 0; + else + *out++ = '.'; + i = *in++; + if (i > 0xf) { + out[1] = hexlist[i & 0xf]; + i >>= 4; + out[0] = hexlist[i]; + out += 2; + } else + *out++ = hexlist[i]; + } + *out = 0; + return (obuf); +} diff --git a/newlib/libc/sys/linux/net/map_v4v6.c b/newlib/libc/sys/linux/net/map_v4v6.c new file mode 100644 index 000000000..f746a8088 --- /dev/null +++ b/newlib/libc/sys/linux/net/map_v4v6.c @@ -0,0 +1,128 @@ +/* + * ++Copyright++ 1985, 1988, 1993 + * - + * Copyright (c) 1985, 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * - + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + * - + * --Copyright-- + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)gethostnamadr.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <sys/param.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> + +#include <stdio.h> +#include <string.h> +#include <netdb.h> +#include <resolv.h> +#include <ctype.h> +#include <syslog.h> + +typedef union { + int32_t al; + char ac; +} align; + +void +_map_v4v6_address(src, dst) + const char *src; + char *dst; +{ + u_char *p = (u_char *)dst; + char tmp[INADDRSZ]; + int i; + + /* Stash a temporary copy so our caller can update in place. */ + bcopy(src, tmp, INADDRSZ); + /* Mark this ipv6 addr as a mapped ipv4. */ + for (i = 0; i < 10; i++) + *p++ = 0x00; + *p++ = 0xff; + *p++ = 0xff; + /* Retrieve the saved copy and we're done. */ + bcopy(tmp, (void*)p, INADDRSZ); +} + +void +_map_v4v6_hostent(hp, bpp, lenp) + struct hostent *hp; + char **bpp; + int *lenp; +{ + char **ap; + + if (hp->h_addrtype != AF_INET || hp->h_length != INADDRSZ) + return; + hp->h_addrtype = AF_INET6; + hp->h_length = IN6ADDRSZ; + for (ap = hp->h_addr_list; *ap; ap++) { + int i = sizeof(align) - ((u_long)*bpp % sizeof(align)); + + if (*lenp < (i + IN6ADDRSZ)) { + /* Out of memory. Truncate address list here. XXX */ + *ap = NULL; + return; + } + *bpp += i; + *lenp -= i; + _map_v4v6_address(*ap, *bpp); + *ap = *bpp; + *bpp += IN6ADDRSZ; + *lenp -= IN6ADDRSZ; + } +} diff --git a/newlib/libc/sys/linux/net/name6.c b/newlib/libc/sys/linux/net/name6.c new file mode 100644 index 000000000..80037e8f9 --- /dev/null +++ b/newlib/libc/sys/linux/net/name6.c @@ -0,0 +1,1812 @@ +/* $KAME: name6.c,v 1.25 2000/06/26 16:44:40 itojun Exp $ */ + +/* + * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +/* + * ++Copyright++ 1985, 1988, 1993 + * - + * Copyright (c) 1985, 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * - + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + * - + * --Copyright-- + */ + +/* + * Atsushi Onoe <onoe@sm.sony.co.jp> + */ + +/* + * TODO for thread safe + * use mutex for _hostconf, _hostconf_init. + * rewrite resolvers to be thread safe + */ + +#include <sys/cdefs.h> +#include <sys/types.h> +#include <machine/endian.h> +#include <sys/types.h> +#include <unistd.h> + +#include "namespace.h" +#include <sys/param.h> +#include <sys/socket.h> +#include <sys/time.h> +#include <sys/queue.h> +#include <netinet/in.h> + +#include <arpa/inet.h> +#include <arpa/nameser.h> + +#include <errno.h> +#include <netdb.h> +#include <resolv.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdarg.h> +#include <nsswitch.h> +#include <unistd.h> +#include "un-namespace.h" + +#ifndef _PATH_HOSTS +#define _PATH_HOSTS "/etc/hosts" +#endif + +#ifndef MAXALIASES +#define MAXALIASES 35 +#endif +#ifndef MAXADDRS +#define MAXADDRS 2 +#endif +#ifndef MAXDNAME +#define MAXDNAME 1025 +#endif + +#ifdef INET6 +#define ADDRLEN(af) ((af) == AF_INET6 ? sizeof(struct in6_addr) : \ + sizeof(struct in_addr)) +#else +#define ADDRLEN(af) sizeof(struct in_addr) +#endif + +#define MAPADDR(ab, ina) \ +do { \ + memcpy(&(ab)->map_inaddr, ina, sizeof(struct in_addr)); \ + memset((ab)->map_zero, 0, sizeof((ab)->map_zero)); \ + memset((ab)->map_one, 0xff, sizeof((ab)->map_one)); \ +} while (0) +#define MAPADDRENABLED(flags) \ + (((flags) & AI_V4MAPPED) || \ + (((flags) & AI_V4MAPPED_CFG) && _mapped_addr_enabled())) + +union inx_addr { + struct in_addr in_addr; +#ifdef INET6 + struct in6_addr in6_addr; +#endif + struct { + u_char mau_zero[10]; + u_char mau_one[2]; + struct in_addr mau_inaddr; + } map_addr_un; +#define map_zero map_addr_un.mau_zero +#define map_one map_addr_un.mau_one +#define map_inaddr map_addr_un.mau_inaddr +}; + +u_int16_t _getshort(const u_char *src); + +static struct hostent *_hpcopy(struct hostent *hp, int *errp); +static struct hostent *_hpaddr(int af, const char *name, void *addr, int *errp); +static struct hostent *_hpmerge(struct hostent *hp1, struct hostent *hp2, int *errp); +#ifdef INET6 +static struct hostent *_hpmapv6(struct hostent *hp, int *errp); +#endif +static struct hostent *_hpsort(struct hostent *hp); +static struct hostent *_ghbyname(const char *name, int af, int flags, int *errp); +static char *_hgetword(char **pp); +static int _mapped_addr_enabled(void); + +static FILE *_files_open(int *errp); +static int _files_ghbyname(void *, void *, va_list); +static int _files_ghbyaddr(void *, void *, va_list); +#if 0 // keep gcc happy +static void _files_shent(int stayopen); +static void _files_ehent(void); +#endif +#ifdef YP +static int _nis_ghbyname(void *, void *, va_list); +static int _nis_ghbyaddr(void *, void *, va_list); +#endif +static int _dns_ghbyname(void *, void *, va_list); +static int _dns_ghbyaddr(void *, void *, va_list); +#if 0 // keep gcc happy +static void _dns_shent(int stayopen); +static void _dns_ehent(void); +#endif + +#ifdef ICMPNL +static int _icmp_ghbyaddr(void *, void *, va_list); +#endif /* ICMPNL */ + +/* Host lookup order if nsswitch.conf is broken or nonexistant */ +static const ns_src default_src[] = { + { NSSRC_FILES, NS_SUCCESS }, + { NSSRC_DNS, NS_SUCCESS }, +#ifdef ICMPNL +#define NSSRC_ICMP "icmp" + { NSSRC_ICMP, NS_SUCCESS }, +#endif + { 0 } +}; + +/* + * Check if kernel supports mapped address. + * implementation dependent + */ +#ifdef __KAME__ +#include <sys/sysctl.h> +#endif /* __KAME__ */ + +static int +_mapped_addr_enabled(void) +{ + /* implementation dependent check */ +#if defined(__KAME__) && defined(IPV6CTL_MAPPED_ADDR) + int mib[4]; + size_t len; + int val; + + mib[0] = CTL_NET; + mib[1] = PF_INET6; + mib[2] = IPPROTO_IPV6; + mib[3] = IPV6CTL_MAPPED_ADDR; + len = sizeof(val); + if (__sysctl(mib, 4, &val, &len, 0, 0) == 0 && val != 0) + return 1; +#endif /* __KAME__ && IPV6CTL_MAPPED_ADDR */ + return 0; +} + +/* + * Functions defined in RFC2553 + * getipnodebyname, getipnodebyaddr, freehostent + */ + +static struct hostent * +_ghbyname(const char *name, int af, int flags, int *errp) +{ + struct hostent *hp; + int rval; + + static const ns_dtab dtab[] = { + NS_FILES_CB(_files_ghbyname, NULL) + { NSSRC_DNS, _dns_ghbyname, NULL }, + NS_NIS_CB(_nis_ghbyname, NULL) + { 0 } + }; + + if (flags & AI_ADDRCONFIG) { + int s; + + /* + * TODO: + * Note that implementation dependent test for address + * configuration should be done everytime called + * (or apropriate interval), + * because addresses will be dynamically assigned or deleted. + */ + if (af == AF_UNSPEC) { + if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) + af = AF_INET; + else { + close(s); + if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) + af = AF_INET6; + else + close(s); + } + + } + if (af != AF_UNSPEC) { + if ((s = socket(af, SOCK_DGRAM, 0)) < 0) + return NULL; + close(s); + } + } + + rval = nsdispatch(&hp, dtab, NSDB_HOSTS, "ghbyname", default_src, + name, af, errp); + return (rval == NS_SUCCESS) ? hp : NULL; +} + +/* getipnodebyname() internal routine for multiple query(PF_UNSPEC) support. */ +struct hostent * +_getipnodebyname_multi(const char *name, int af, int flags, int *errp) +{ + struct hostent *hp; + union inx_addr addrbuf; + + /* XXX: PF_UNSPEC is only supposed to be passed from getaddrinfo() */ + if (af != AF_INET +#ifdef INET6 + && af != AF_INET6 +#endif + && af != PF_UNSPEC + ) + { + *errp = NO_RECOVERY; + return NULL; + } + +#ifdef INET6 + /* special case for literal address */ + if (inet_pton(AF_INET6, name, &addrbuf) == 1) { + if (af != AF_INET6) { + *errp = HOST_NOT_FOUND; + return NULL; + } + return _hpaddr(af, name, &addrbuf, errp); + } +#endif + if (inet_aton(name, (struct in_addr *)&addrbuf) == 1) { + if (af != AF_INET) { + if (MAPADDRENABLED(flags)) { + MAPADDR(&addrbuf, &addrbuf.in_addr); + } else { + *errp = HOST_NOT_FOUND; + return NULL; + } + } + return _hpaddr(af, name, &addrbuf, errp); + } + + *errp = HOST_NOT_FOUND; + hp = _ghbyname(name, af, flags, errp); + +#ifdef INET6 + if (af == AF_INET6 + && ((flags & AI_ALL) || hp == NULL) + && (MAPADDRENABLED(flags))) { + struct hostent *hp2 = _ghbyname(name, AF_INET, flags, errp); + if (hp == NULL) + hp = _hpmapv6(hp2, errp); + else { + if (hp2 && strcmp(hp->h_name, hp2->h_name) != 0) { + freehostent(hp2); + hp2 = NULL; + } + hp = _hpmerge(hp, hp2, errp); + } + } +#endif + return _hpsort(hp); +} + +struct hostent * +getipnodebyname(const char *name, int af, int flags, int *errp) +{ + if (af != AF_INET +#ifdef INET6 + && af != AF_INET6 +#endif + ) + { + *errp = NO_RECOVERY; + return NULL; + } + return(_getipnodebyname_multi(name, af ,flags, errp)); +} + +struct hostent * +getipnodebyaddr(const void *src, size_t len, int af, int *errp) +{ + struct hostent *hp; + int rval; +#ifdef INET6 + struct in6_addr addrbuf; +#else + struct in_addr addrbuf; +#endif + + static const ns_dtab dtab[] = { + NS_FILES_CB(_files_ghbyaddr, NULL) + { NSSRC_DNS, _dns_ghbyaddr, NULL }, + NS_NIS_CB(_nis_ghbyaddr, NULL) +#ifdef ICMPNL + { NSSRC_ICMP, _icmp_ghbyaddr, NULL }, +#endif + { 0 } + }; + + *errp = HOST_NOT_FOUND; + + switch (af) { + case AF_INET: + if (len != sizeof(struct in_addr)) { + *errp = NO_RECOVERY; + return NULL; + } + if ((long)src & ~(sizeof(struct in_addr) - 1)) { + memcpy(&addrbuf, src, len); + src = &addrbuf; + } + if (((struct in_addr *)src)->s_addr == 0) + return NULL; + break; +#ifdef INET6 + case AF_INET6: + if (len != sizeof(struct in6_addr)) { + *errp = NO_RECOVERY; + return NULL; + } + if ((long)src & ~(sizeof(struct in6_addr) / 2 - 1)) { /*XXX*/ + memcpy(&addrbuf, src, len); + src = &addrbuf; + } + if (IN6_IS_ADDR_UNSPECIFIED((struct in6_addr *)src)) + return NULL; + if (IN6_IS_ADDR_V4MAPPED((struct in6_addr *)src) + || IN6_IS_ADDR_V4COMPAT((struct in6_addr *)src)) { + src = (char *)src + + (sizeof(struct in6_addr) - sizeof(struct in_addr)); + af = AF_INET; + len = sizeof(struct in_addr); + } + break; +#endif + default: + *errp = NO_RECOVERY; + return NULL; + } + + rval = nsdispatch(&hp, dtab, NSDB_HOSTS, "ghbyaddr", default_src, + src, len, af, errp); + return (rval == NS_SUCCESS) ? hp : NULL; +} + +void +freehostent(struct hostent *ptr) +{ + free(ptr); +} + +#if 0 + +/* XXX: should be deprecated */ +struct hostent * +getnodebyname(const char *name, int af, int flags) +{ + return getipnodebyname(name, af, flags, &h_errno); +} + +#ifdef __warn_references +__warn_references(getnodebyname, + "warning: getnodebyname() deprecated, " + "should use getaddrinfo() or getipnodebyname()"); +#endif + +struct hostent * +getnodebyaddr(const void *src, size_t len, int af) +{ + return getipnodebyaddr(src, len, af, &h_errno); +} + +#ifdef __warn_references +__warn_references(getnodebyaddr, + "warning: getnodebyaddr() deprecated, " + "should use getnameinfo() or getipnodebyaddr()"); +#endif + +#endif + +/* + * Private utility functions + */ + +/* + * _hpcopy: allocate and copy hostent structure + */ +static struct hostent * +_hpcopy(struct hostent *hp, int *errp) +{ + struct hostent *nhp; + char *cp, **pp; + int size, addrsize; + int nalias = 0, naddr = 0; + int al_off; + int i; + + if (hp == NULL) + return hp; + + /* count size to be allocated */ + size = sizeof(struct hostent); + if (hp->h_name != NULL) + size += strlen(hp->h_name) + 1; + if ((pp = hp->h_aliases) != NULL) { + for (i = 0; *pp != NULL; i++, pp++) { + if (**pp != '\0') { + size += strlen(*pp) + 1; + nalias++; + } + } + } + /* adjust alignment */ +#ifdef ALIGN + size = ALIGN(size); +#endif + al_off = size; + size += sizeof(char *) * (nalias + 1); +#ifdef ALIGN + addrsize = ALIGN(hp->h_length); +#else + addrsize = hp->h_length; +#endif + + if ((pp = hp->h_addr_list) != NULL) { + while (*pp++ != NULL) + naddr++; + } + size += addrsize * naddr; + size += sizeof(char *) * (naddr + 1); + + /* copy */ + if ((nhp = (struct hostent *)malloc(size)) == NULL) { + *errp = TRY_AGAIN; + return NULL; + } + cp = (char *)&nhp[1]; + if (hp->h_name != NULL) { + nhp->h_name = cp; + strcpy(cp, hp->h_name); + cp += strlen(cp) + 1; + } else + nhp->h_name = NULL; + nhp->h_aliases = (char **)((char *)nhp + al_off); + if ((pp = hp->h_aliases) != NULL) { + for (i = 0; *pp != NULL; pp++) { + if (**pp != '\0') { + nhp->h_aliases[i++] = cp; + strcpy(cp, *pp); + cp += strlen(cp) + 1; + } + } + } + nhp->h_aliases[nalias] = NULL; + cp = (char *)&nhp->h_aliases[nalias + 1]; + nhp->h_addrtype = hp->h_addrtype; + nhp->h_length = hp->h_length; + nhp->h_addr_list = (char **)cp; + if ((pp = hp->h_addr_list) != NULL) { + cp = (char *)&nhp->h_addr_list[naddr + 1]; + for (i = 0; *pp != NULL; pp++) { + nhp->h_addr_list[i++] = cp; + memcpy(cp, *pp, hp->h_length); + cp += addrsize; + } + } + nhp->h_addr_list[naddr] = NULL; + return nhp; +} + +/* + * _hpaddr: construct hostent structure with one address + */ +static struct hostent * +_hpaddr(int af, const char *name, void *addr, int *errp) +{ + struct hostent *hp, hpbuf; + char *addrs[2]; + + hp = &hpbuf; + hp->h_name = (char *)name; + hp->h_aliases = NULL; + hp->h_addrtype = af; + hp->h_length = ADDRLEN(af); + hp->h_addr_list = addrs; + addrs[0] = (char *)addr; + addrs[1] = NULL; + return _hpcopy(hp, errp); +} + +/* + * _hpmerge: merge 2 hostent structure, arguments will be freed + */ +static struct hostent * +_hpmerge(struct hostent *hp1, struct hostent *hp2, int *errp) +{ + int i, j; + int naddr, nalias; + char **pp; + struct hostent *hp, hpbuf; + char *aliases[MAXALIASES + 1], *addrs[MAXADDRS + 1]; + union inx_addr addrbuf[MAXADDRS]; + + if (hp1 == NULL) + return hp2; + if (hp2 == NULL) + return hp1; + +#define HP(i) (i == 1 ? hp1 : hp2) + hp = &hpbuf; + hp->h_name = (hp1->h_name != NULL ? hp1->h_name : hp2->h_name); + hp->h_aliases = aliases; + nalias = 0; + for (i = 1; i <= 2; i++) { + if ((pp = HP(i)->h_aliases) == NULL) + continue; + for (; nalias < MAXALIASES && *pp != NULL; pp++) { + /* check duplicates */ + for (j = 0; j < nalias; j++) + if (strcasecmp(*pp, aliases[j]) == 0) + break; + if (j == nalias) + aliases[nalias++] = *pp; + } + } + aliases[nalias] = NULL; +#ifdef INET6 + if (hp1->h_length != hp2->h_length) { + hp->h_addrtype = AF_INET6; + hp->h_length = sizeof(struct in6_addr); + } else { +#endif + hp->h_addrtype = hp1->h_addrtype; + hp->h_length = hp1->h_length; +#ifdef INET6 + } +#endif + hp->h_addr_list = addrs; + naddr = 0; + for (i = 1; i <= 2; i++) { + if ((pp = HP(i)->h_addr_list) == NULL) + continue; + if (HP(i)->h_length == hp->h_length) { + while (naddr < MAXADDRS && *pp != NULL) + addrs[naddr++] = *pp++; + } else { + /* copy IPv4 addr as mapped IPv6 addr */ + while (naddr < MAXADDRS && *pp != NULL) { + MAPADDR(&addrbuf[naddr], *pp++); + addrs[naddr] = (char *)&addrbuf[naddr]; + naddr++; + } + } + } + addrs[naddr] = NULL; + hp = _hpcopy(hp, errp); + freehostent(hp1); + freehostent(hp2); + return hp; +} + +/* + * _hpmapv6: convert IPv4 hostent into IPv4-mapped IPv6 addresses + */ +#ifdef INET6 +static struct hostent * +_hpmapv6(struct hostent *hp, int *errp) +{ + struct hostent *hp6; + + if (hp == NULL) + return NULL; + if (hp->h_addrtype == AF_INET6) + return hp; + + /* make dummy hostent to convert IPv6 address */ + if ((hp6 = (struct hostent *)malloc(sizeof(struct hostent))) == NULL) { + *errp = TRY_AGAIN; + return NULL; + } + hp6->h_name = NULL; + hp6->h_aliases = NULL; + hp6->h_addrtype = AF_INET6; + hp6->h_length = sizeof(struct in6_addr); + hp6->h_addr_list = NULL; + return _hpmerge(hp6, hp, errp); +} +#endif + +/* + * _hpsort: sort address by sortlist + */ +static struct hostent * +_hpsort(struct hostent *hp) +{ + int i, j, n; + u_char *ap, *sp, *mp, **pp; + char t; + char order[MAXADDRS]; + int nsort = _res.nsort; + + if (hp == NULL || hp->h_addr_list[1] == NULL || nsort == 0) + return hp; + for (i = 0; (ap = (u_char *)hp->h_addr_list[i]); i++) { + for (j = 0; j < nsort; j++) { +#ifdef INET6 + if (_res_ext.sort_list[j].af != hp->h_addrtype) + continue; + sp = (u_char *)&_res_ext.sort_list[j].addr; + mp = (u_char *)&_res_ext.sort_list[j].mask; +#else + sp = (u_char *)&_res.sort_list[j].addr; + mp = (u_char *)&_res.sort_list[j].mask; +#endif + for (n = 0; n < hp->h_length; n++) { + if ((ap[n] & mp[n]) != sp[n]) + break; + } + if (n == hp->h_length) + break; + } + order[i] = j; + } + n = i; + pp = (u_char **)hp->h_addr_list; + for (i = 0; i < n - 1; i++) { + for (j = i + 1; j < n; j++) { + if (order[i] > order[j]) { + ap = pp[i]; + pp[i] = pp[j]; + pp[j] = ap; + t = order[i]; + order[i] = order[j]; + order[j] = t; + } + } + } + return hp; +} + +static char * +_hgetword(char **pp) +{ + char c, *p, *ret; + const char *sp; + static const char sep[] = "# \t\n"; + + ret = NULL; + for (p = *pp; (c = *p) != '\0'; p++) { + for (sp = sep; *sp != '\0'; sp++) { + if (c == *sp) + break; + } + if (c == '#') + p[1] = '\0'; /* ignore rest of line */ + if (ret == NULL) { + if (*sp == '\0') + ret = p; + } else { + if (*sp != '\0') { + *p++ = '\0'; + break; + } + } + } + *pp = p; + if (ret == NULL || *ret == '\0') + return NULL; + return ret; +} + +/* + * FILES (/etc/hosts) + */ + +static FILE * +_files_open(int *errp) +{ + FILE *fp; + fp = fopen(_PATH_HOSTS, "r"); + if (fp == NULL) + *errp = NO_RECOVERY; + return fp; +} + +static int +_files_ghbyname(void *rval, void *cb_data, va_list ap) +{ + const char *name; + int af; + int *errp; + int match, nalias; + char *p, *line, *addrstr, *cname; + FILE *fp; + struct hostent *rethp, *hp, hpbuf; + char *aliases[MAXALIASES + 1], *addrs[2]; + union inx_addr addrbuf; + char buf[BUFSIZ]; + int af0; + + name = va_arg(ap, const char *); + af = va_arg(ap, int); + errp = va_arg(ap, int *); + + *(struct hostent **)rval = NULL; + + if ((fp = _files_open(errp)) == NULL) + return NS_UNAVAIL; + rethp = hp = NULL; + + af0 = af; + while (fgets(buf, sizeof(buf), fp)) { + line = buf; + if ((addrstr = _hgetword(&line)) == NULL + || (cname = _hgetword(&line)) == NULL) + continue; + match = (strcasecmp(cname, name) == 0); + nalias = 0; + while ((p = _hgetword(&line)) != NULL) { + if (!match) + match = (strcasecmp(p, name) == 0); + if (nalias < MAXALIASES) + aliases[nalias++] = p; + } + if (!match) + continue; + switch (af0) { + case AF_INET: + if (inet_aton(addrstr, (struct in_addr *)&addrbuf) + != 1) { + *errp = NO_DATA; /* name found */ + continue; + } + af = af0; + break; +#ifdef INET6 + case AF_INET6: + if (inet_pton(af, addrstr, &addrbuf) != 1) { + *errp = NO_DATA; /* name found */ + continue; + } + af = af0; + break; +#endif + case AF_UNSPEC: + if (inet_aton(addrstr, (struct in_addr *)&addrbuf) + == 1) { + af = AF_INET; + break; + } +#ifdef INET6 + if (inet_pton(AF_INET6, addrstr, &addrbuf) == 1) { + af = AF_INET6; + break; + } +#endif + *errp = NO_DATA; /* name found */ + continue; + /* NOTREACHED */ + } + hp = &hpbuf; + hp->h_name = cname; + hp->h_aliases = aliases; + aliases[nalias] = NULL; + hp->h_addrtype = af; + hp->h_length = ADDRLEN(af); + hp->h_addr_list = addrs; + addrs[0] = (char *)&addrbuf; + addrs[1] = NULL; + hp = _hpcopy(hp, errp); + rethp = _hpmerge(rethp, hp, errp); + } + fclose(fp); + *(struct hostent **)rval = rethp; + return (rethp != NULL) ? NS_SUCCESS : NS_NOTFOUND; +} + +static int +_files_ghbyaddr(void *rval, void *cb_data, va_list ap) +{ + const void *addr; + int addrlen; + int af; + int *errp; + int nalias; + char *p, *line; + FILE *fp; + struct hostent *hp, hpbuf; + char *aliases[MAXALIASES + 1], *addrs[2]; + union inx_addr addrbuf; + char buf[BUFSIZ]; + + addr = va_arg(ap, const void *); + addrlen = va_arg(ap, int); + af = va_arg(ap, int); + errp = va_arg(ap, int *); + + *(struct hostent**)rval = NULL; + + if ((fp = _files_open(errp)) == NULL) + return NS_UNAVAIL; + hp = NULL; + while (fgets(buf, sizeof(buf), fp)) { + line = buf; + if ((p = _hgetword(&line)) == NULL + || (af == AF_INET + ? inet_aton(p, (struct in_addr *)&addrbuf) + : inet_pton(af, p, &addrbuf)) != 1 + || memcmp(addr, &addrbuf, addrlen) != 0 + || (p = _hgetword(&line)) == NULL) + continue; + hp = &hpbuf; + hp->h_name = p; + hp->h_aliases = aliases; + nalias = 0; + while ((p = _hgetword(&line)) != NULL) { + if (nalias < MAXALIASES) + aliases[nalias++] = p; + } + aliases[nalias] = NULL; + hp->h_addrtype = af; + hp->h_length = addrlen; + hp->h_addr_list = addrs; + addrs[0] = (char *)&addrbuf; + addrs[1] = NULL; + hp = _hpcopy(hp, errp); + break; + } + fclose(fp); + *(struct hostent **)rval = hp; + return (hp != NULL) ? NS_SUCCESS : NS_NOTFOUND; +} + +#ifdef YP +/* + * NIS + * + * XXX actually a hack, these are INET4 specific. + */ +static int +_nis_ghbyname(void *rval, void *cb_data, va_list ap) +{ + const char *name; + int af; + int *errp; + struct hostent *hp = NULL; + + name = va_arg(ap, const char *); + af = va_arg(ap, int); + errp = va_arg(ap, int *); + + if (af == AF_UNSPEC) + af = AF_INET; + if (af == AF_INET) { + hp = _gethostbynisname(name, af); + if (hp != NULL) + hp = _hpcopy(hp, errp); + } + + *(struct hostent **)rval = hp; + return (hp != NULL) ? NS_SUCCESS : NS_NOTFOUND; + +} + +static int +_nis_ghbyaddr(void *rval, void *cb_data, va_list ap) +{ + const void *addr; + int addrlen; + int af; + int *errp; + struct hostent *hp = NULL; + + addr = va_arg(ap, const void *); + addrlen = va_arg(ap, int); + af = va_arg(ap, int); + + if (af == AF_INET) { + hp = _gethostbynisaddr(addr, addrlen, af); + if (hp != NULL) + hp = _hpcopy(hp, errp); + } + *(struct hostent **)rval = hp; + return (hp != NULL) ? NS_SUCCESS : NS_NOTFOUND; +} +#endif +typedef struct __res_type_list res_type_list; + +struct __res_type_list { + res_type_list * rtl_entry; + int rtl_type; +}; + +#if PACKETSZ > 1024 +#define MAXPACKET PACKETSZ +#else +#define MAXPACKET 1024 +#endif + +typedef union { + HEADER hdr; + u_char buf[MAXPACKET]; +} querybuf; + +static struct hostent *getanswer(const querybuf *, int, const char *, int, + struct hostent *, int *); + +/* + * we don't need to take care about sorting, nor IPv4 mapped address here. + */ +static struct hostent * +getanswer(answer, anslen, qname, qtype, template, errp) + const querybuf *answer; + int anslen; + const char *qname; + int qtype; + struct hostent *template; + int *errp; +{ + const HEADER *hp; + const u_char *cp; + int n; + const u_char *eom, *erdata; + char *bp, **ap, **hap; + int type, class, buflen, ancount, qdcount; + int haveanswer, had_error; + char tbuf[MAXDNAME]; + const char *tname; + int (*name_ok)(const char *); + static char *h_addr_ptrs[MAXADDRS + 1]; + static char *host_aliases[MAXALIASES]; + static char hostbuf[8*1024]; + +#define BOUNDED_INCR(x) \ + do { \ + cp += x; \ + if (cp > eom) { \ + *errp = NO_RECOVERY; \ + return (NULL); \ + } \ + } while (0) + +#define BOUNDS_CHECK(ptr, count) \ + do { \ + if ((ptr) + (count) > eom) { \ + *errp = NO_RECOVERY; \ + return (NULL); \ + } \ + } while (0) + +/* XXX do {} while (0) cannot be put here */ +#define DNS_ASSERT(x) \ + { \ + if (!(x)) { \ + cp += n; \ + continue; \ + } \ + } + +/* XXX do {} while (0) cannot be put here */ +#define DNS_FATAL(x) \ + { \ + if (!(x)) { \ + had_error++; \ + continue; \ + } \ + } + + tname = qname; + template->h_name = NULL; + eom = answer->buf + anslen; + switch (qtype) { + case T_A: + case T_AAAA: + name_ok = res_hnok; + break; + case T_PTR: + name_ok = res_dnok; + break; + default: + return (NULL); /* XXX should be abort(); */ + } + /* + * find first satisfactory answer + */ + hp = &answer->hdr; + ancount = ntohs(hp->ancount); + qdcount = ntohs(hp->qdcount); + bp = hostbuf; + buflen = sizeof hostbuf; + cp = answer->buf; + BOUNDED_INCR(HFIXEDSZ); + if (qdcount != 1) { + *errp = NO_RECOVERY; + return (NULL); + } + n = dn_expand(answer->buf, eom, cp, bp, buflen); + if ((n < 0) || !(*name_ok)(bp)) { + *errp = NO_RECOVERY; + return (NULL); + } + BOUNDED_INCR(n + QFIXEDSZ); + if (qtype == T_A || qtype == T_AAAA) { + /* res_send() has already verified that the query name is the + * same as the one we sent; this just gets the expanded name + * (i.e., with the succeeding search-domain tacked on). + */ + n = strlen(bp) + 1; /* for the \0 */ + if (n >= MAXHOSTNAMELEN) { + *errp = NO_RECOVERY; + return (NULL); + } + template->h_name = bp; + bp += n; + buflen -= n; + /* The qname can be abbreviated, but h_name is now absolute. */ + qname = template->h_name; + } + ap = host_aliases; + *ap = NULL; + template->h_aliases = host_aliases; + hap = h_addr_ptrs; + *hap = NULL; + template->h_addr_list = h_addr_ptrs; + haveanswer = 0; + had_error = 0; + while (ancount-- > 0 && cp < eom && !had_error) { + n = dn_expand(answer->buf, eom, cp, bp, buflen); + DNS_FATAL(n >= 0); + DNS_FATAL((*name_ok)(bp)); + cp += n; /* name */ + BOUNDS_CHECK(cp, 3 * INT16SZ + INT32SZ); + type = _getshort(cp); + cp += INT16SZ; /* type */ + class = _getshort(cp); + cp += INT16SZ + INT32SZ; /* class, TTL */ + n = _getshort(cp); + cp += INT16SZ; /* len */ + BOUNDS_CHECK(cp, n); + erdata = cp + n; + DNS_ASSERT(class == C_IN); + if ((qtype == T_A || qtype == T_AAAA) && type == T_CNAME) { + if (ap >= &host_aliases[MAXALIASES-1]) + continue; + n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf); + DNS_FATAL(n >= 0); + DNS_FATAL((*name_ok)(tbuf)); + cp += n; + if (cp != erdata) { + *errp = NO_RECOVERY; + return (NULL); + } + /* Store alias. */ + *ap++ = bp; + n = strlen(bp) + 1; /* for the \0 */ + DNS_FATAL(n < MAXHOSTNAMELEN); + bp += n; + buflen -= n; + /* Get canonical name. */ + n = strlen(tbuf) + 1; /* for the \0 */ + DNS_FATAL(n <= buflen); + DNS_FATAL(n < MAXHOSTNAMELEN); + strcpy(bp, tbuf); + template->h_name = bp; + bp += n; + buflen -= n; + continue; + } + if (qtype == T_PTR && type == T_CNAME) { + n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf); + if (n < 0 || !res_dnok(tbuf)) { + had_error++; + continue; + } + cp += n; + if (cp != erdata) { + *errp = NO_RECOVERY; + return (NULL); + } + /* Get canonical name. */ + n = strlen(tbuf) + 1; /* for the \0 */ + if (n > buflen || n >= MAXHOSTNAMELEN) { + had_error++; + continue; + } + strcpy(bp, tbuf); + tname = bp; + bp += n; + buflen -= n; + continue; + } + DNS_ASSERT(type == qtype); + switch (type) { + case T_PTR: + DNS_ASSERT(strcasecmp(tname, bp) == 0); + n = dn_expand(answer->buf, eom, cp, bp, buflen); + DNS_FATAL(n >= 0); + DNS_FATAL(res_hnok(bp)); +#if MULTI_PTRS_ARE_ALIASES + cp += n; + if (cp != erdata) { + *errp = NO_RECOVERY; + return (NULL); + } + if (!haveanswer) + template->h_name = bp; + else if (ap < &host_aliases[MAXALIASES-1]) + *ap++ = bp; + else + n = -1; + if (n != -1) { + n = strlen(bp) + 1; /* for the \0 */ + if (n >= MAXHOSTNAMELEN) { + had_error++; + break; + } + bp += n; + buflen -= n; + } + break; +#else + template->h_name = bp; + *errp = NETDB_SUCCESS; + return (template); +#endif + case T_A: + case T_AAAA: + DNS_ASSERT(strcasecmp(template->h_name, bp) == 0); + DNS_ASSERT(n == template->h_length); + if (!haveanswer) { + int nn; + + template->h_name = bp; + nn = strlen(bp) + 1; /* for the \0 */ + bp += nn; + buflen -= nn; + } +#ifdef ALIGN + bp = (char *)ALIGN(bp); +#else + bp = (char *)(bp); +#endif + + DNS_FATAL(bp + n < &hostbuf[sizeof hostbuf]); + DNS_ASSERT(hap < &h_addr_ptrs[MAXADDRS-1]); +#ifdef FILTER_V4MAPPED + if (type == T_AAAA) { + struct in6_addr in6; + memcpy(&in6, cp, sizeof(in6)); + DNS_ASSERT(IN6_IS_ADDR_V4MAPPED(&in6) == 0); + } +#endif + bcopy(cp, *hap++ = bp, n); + bp += n; + buflen -= n; + cp += n; + if (cp != erdata) { + *errp = NO_RECOVERY; + return (NULL); + } + break; + default: + abort(); + } + if (!had_error) + haveanswer++; + } + if (haveanswer) { + *ap = NULL; + *hap = NULL; + if (!template->h_name) { + n = strlen(qname) + 1; /* for the \0 */ + if (n > buflen || n >= MAXHOSTNAMELEN) + goto no_recovery; + strcpy(bp, qname); + template->h_name = bp; + bp += n; + buflen -= n; + } + *errp = NETDB_SUCCESS; + return (template); + } + no_recovery: + *errp = NO_RECOVERY; + return (NULL); + +#undef BOUNDED_INCR +#undef BOUNDS_CHECK +#undef DNS_ASSERT +#undef DNS_FATAL +} + +/* res_search() variant with multiple query support. */ +static struct hostent * +_res_search_multi(name, rtl, errp) + const char *name; /* domain name */ + struct __res_type_list *rtl; /* list of query types */ + int *errp; +{ + const char *cp, * const *domain; + struct hostent *hp0 = NULL, *hp; + struct hostent hpbuf; + u_int dots; + int trailing_dot, ret, saved_herrno; + int got_nodata = 0, got_servfail = 0, tried_as_is = 0; + struct __res_type_list *rtl0 = rtl; + querybuf buf; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + *errp = NETDB_INTERNAL; + return (NULL); + } + dots = 0; + for (cp = name; *cp; cp++) + dots += (*cp == '.'); + trailing_dot = 0; + if (cp > name && *--cp == '.') + trailing_dot++; + + /* If there aren't any dots, it could be a user-level alias */ + if (!dots && (cp = hostalias(name)) != NULL) { + for(rtl = rtl0; rtl != NULL; + rtl = rtl->rtl_entry) { + ret = res_query(cp, C_IN, rtl->rtl_type, buf.buf, + sizeof(buf.buf)); + if (ret > 0) { + hpbuf.h_addrtype = (rtl->rtl_type == T_AAAA) + ? AF_INET6 : AF_INET; + hpbuf.h_length = ADDRLEN(hpbuf.h_addrtype); + hp = getanswer(&buf, ret, name, rtl->rtl_type, + &hpbuf, errp); + if (!hp) + continue; + hp = _hpcopy(&hpbuf, errp); + hp0 = _hpmerge(hp0, hp, errp); + } + } + return (hp0); + } + + /* + * If there are dots in the name already, let's just give it a try + * 'as is'. The threshold can be set with the "ndots" option. + */ + saved_herrno = -1; + if (dots >= _res.ndots) { + for(rtl = rtl0; rtl != NULL; + rtl = rtl->rtl_entry) { + ret = res_querydomain(name, NULL, C_IN, rtl->rtl_type, + buf.buf, sizeof(buf.buf)); + if (ret > 0) { + hpbuf.h_addrtype = (rtl->rtl_type == T_AAAA) + ? AF_INET6 : AF_INET; + hpbuf.h_length = ADDRLEN(hpbuf.h_addrtype); + hp = getanswer(&buf, ret, name, rtl->rtl_type, + &hpbuf, errp); + if (!hp) + continue; + hp = _hpcopy(&hpbuf, errp); + hp0 = _hpmerge(hp0, hp, errp); + } + } + if (hp0 != NULL) + return (hp0); + saved_herrno = *errp; + tried_as_is++; + } + + /* + * We do at least one level of search if + * - there is no dot and RES_DEFNAME is set, or + * - there is at least one dot, there is no trailing dot, + * and RES_DNSRCH is set. + */ + if ((!dots && (_res.options & RES_DEFNAMES)) || + (dots && !trailing_dot && (_res.options & RES_DNSRCH))) { + int done = 0; + + for (domain = (const char * const *)_res.dnsrch; + *domain && !done; + domain++) { + + for(rtl = rtl0; rtl != NULL; + rtl = rtl->rtl_entry) { + ret = res_querydomain(name, *domain, C_IN, + rtl->rtl_type, + buf.buf, sizeof(buf.buf)); + if (ret > 0) { + hpbuf.h_addrtype = (rtl->rtl_type == T_AAAA) + ? AF_INET6 : AF_INET; + hpbuf.h_length = ADDRLEN(hpbuf.h_addrtype); + hp = getanswer(&buf, ret, name, + rtl->rtl_type, &hpbuf, errp); + if (!hp) + continue; + hp = _hpcopy(&hpbuf, errp); + hp0 = _hpmerge(hp0, hp, errp); + } + } + if (hp0 != NULL) + return (hp0); + + /* + * If no server present, give up. + * If name isn't found in this domain, + * keep trying higher domains in the search list + * (if that's enabled). + * On a NO_DATA error, keep trying, otherwise + * a wildcard entry of another type could keep us + * from finding this entry higher in the domain. + * If we get some other error (negative answer or + * server failure), then stop searching up, + * but try the input name below in case it's + * fully-qualified. + */ + if (errno == ECONNREFUSED) { + *errp = TRY_AGAIN; + return (NULL); + } + + switch (*errp) { + case NO_DATA: + got_nodata++; + /* FALLTHROUGH */ + case HOST_NOT_FOUND: + /* keep trying */ + break; + case TRY_AGAIN: + if (buf.hdr.rcode == SERVFAIL) { + /* try next search element, if any */ + got_servfail++; + break; + } + /* FALLTHROUGH */ + default: + /* anything else implies that we're done */ + done++; + } + + /* if we got here for some reason other than DNSRCH, + * we only wanted one iteration of the loop, so stop. + */ + if (!(_res.options & RES_DNSRCH)) + done++; + } + } + + /* + * If we have not already tried the name "as is", do that now. + * note that we do this regardless of how many dots were in the + * name or whether it ends with a dot unless NOTLDQUERY is set. + */ + if (!tried_as_is && (dots || !(_res.options & RES_NOTLDQUERY))) { + for(rtl = rtl0; rtl != NULL; + rtl = rtl->rtl_entry) { + ret = res_querydomain(name, NULL, C_IN, rtl->rtl_type, + buf.buf, sizeof(buf.buf)); + if (ret > 0) { + hpbuf.h_addrtype = (rtl->rtl_type == T_AAAA) + ? AF_INET6 : AF_INET; + hpbuf.h_length = ADDRLEN(hpbuf.h_addrtype); + hp = getanswer(&buf, ret, name, rtl->rtl_type, + &hpbuf, errp); + if (!hp) + continue; + hp = _hpcopy(&hpbuf, errp); + hp0 = _hpmerge(hp0, hp, errp); + } + } + if (hp0 != NULL) + return (hp0); + } + + /* if we got here, we didn't satisfy the search. + * if we did an initial full query, return that query's h_errno + * (note that we wouldn't be here if that query had succeeded). + * else if we ever got a nodata, send that back as the reason. + * else send back meaningless h_errno, that being the one from + * the last DNSRCH we did. + */ + if (saved_herrno != -1) + *errp = saved_herrno; + else if (got_nodata) + *errp = NO_DATA; + else if (got_servfail) + *errp = TRY_AGAIN; + return (NULL); +} + +static int +_dns_ghbyname(void *rval, void *cb_data, va_list ap) +{ + const char *name; + int af; + int *errp; + res_type_list *rtl, rtl4; +#ifdef INET6 + res_type_list rtl6; +#endif + + name = va_arg(ap, const char *); + af = va_arg(ap, int); + errp = va_arg(ap, int *); + +#ifdef INET6 + switch (af) { + case AF_UNSPEC: + &rtl4->rtl_entry = NULL; rtl4.rtl_type = T_A; + &rtl6->rtl_entry = &rtl4; rtl6.rtl_type = T_AAAA; + rtl = &rtl6; + break; + case AF_INET6: + &rtl6->rtl_entry = NULL; rtl6.rtl_type = T_AAAA; + rtl = &rtl6; + break; + case AF_INET: + &rtl4->rtl_entry = NULL; rtl4.rtl_type = T_A; + rtl = &rtl4; + break; + } +#else + (&rtl4)->rtl_entry = NULL; + rtl4.rtl_type = T_A; + rtl = &rtl4; +#endif + *(struct hostent **)rval = _res_search_multi(name, rtl, errp); + return (*(struct hostent **)rval != NULL) ? NS_SUCCESS : NS_NOTFOUND; +} + +static int +_dns_ghbyaddr(void *rval, void *cb_data, va_list ap) +{ + const void *addr; + int addrlen; + int af; + int *errp; + int n; + struct hostent *hp; + u_char c, *cp; + char *bp; + struct hostent hbuf; + int na; +#ifdef INET6 + static const char hex[] = "0123456789abcdef"; +#endif + querybuf buf; + char qbuf[MAXDNAME+1]; + char *hlist[2]; + + addr = va_arg(ap, const void *); + addrlen = va_arg(ap, int); + af = va_arg(ap, int); + errp = va_arg(ap, int *); + + *(struct hostent **)rval = NULL; + +#ifdef INET6 + /* XXX */ + if (af == AF_INET6 && IN6_IS_ADDR_LINKLOCAL((struct in6_addr *)addr)) + return NS_NOTFOUND; +#endif + + if ((_res.options & RES_INIT) == 0) { + if (res_init() < 0) { + *errp = h_errno; + return NS_UNAVAIL; + } + } + memset(&hbuf, 0, sizeof(hbuf)); + hbuf.h_name = NULL; + hbuf.h_addrtype = af; + hbuf.h_length = addrlen; + na = 0; + + /* XXX assumes that MAXDNAME is big enough */ + n = 0; + bp = qbuf; + cp = (u_char *)addr+addrlen-1; + switch (af) { +#ifdef INET6 + case AF_INET6: + for (; n < addrlen; n++, cp--) { + c = *cp; + *bp++ = hex[c & 0xf]; + *bp++ = '.'; + *bp++ = hex[c >> 4]; + *bp++ = '.'; + } + strcpy(bp, "ip6.int"); + break; +#endif + default: + for (; n < addrlen; n++, cp--) { + c = *cp; + if (c >= 100) + *bp++ = '0' + c / 100; + if (c >= 10) + *bp++ = '0' + (c % 100) / 10; + *bp++ = '0' + c % 10; + *bp++ = '.'; + } + strcpy(bp, "in-addr.arpa"); + break; + } + + n = res_query(qbuf, C_IN, T_PTR, buf.buf, sizeof buf.buf); + if (n < 0) { + *errp = h_errno; + return NS_UNAVAIL; + } + hp = getanswer(&buf, n, qbuf, T_PTR, &hbuf, errp); + if (!hp) + return NS_NOTFOUND; + hbuf.h_addrtype = af; + hbuf.h_length = addrlen; + hbuf.h_addr_list = hlist; + hlist[0] = (char *)addr; + hlist[1] = NULL; + *(struct hostent **)rval = _hpcopy(&hbuf, errp); + return NS_SUCCESS; +} + +#if 0 // keep gcc happy +static void +_dns_shent(int stayopen) +{ + if ((_res.options & RES_INIT) == 0) { + if (res_init() < 0) + return; + } + if (stayopen) + _res.options |= RES_STAYOPEN | RES_USEVC; +} + +static void +_dns_ehent(void) +{ + _res.options &= ~(RES_STAYOPEN | RES_USEVC); + res_close(); +} +#endif + +#ifdef ICMPNL + +/* + * experimental: + * draft-ietf-ipngwg-icmp-namelookups-02.txt + * ifindex is assumed to be encoded in addr. + */ +#include <sys/uio.h> +#include <netinet/ip6.h> +#include <netinet/icmp6.h> + +struct _icmp_host_cache { + struct _icmp_host_cache *hc_next; + int hc_ifindex; + struct in6_addr hc_addr; + char *hc_name; +}; + +static char * +_icmp_fqdn_query(const struct in6_addr *addr, int ifindex) +{ + int s; + struct icmp6_filter filter; + struct msghdr msg; + struct cmsghdr *cmsg; + struct in6_pktinfo *pkt; + char cbuf[256]; + char buf[1024]; + int cc; + struct icmp6_fqdn_query *fq; + struct icmp6_fqdn_reply *fr; + struct _icmp_host_cache *hc; + struct sockaddr_in6 sin6; + struct iovec iov; + fd_set s_fds, fds; + struct timeval tout; + int len; + char *name; + static int pid; + static struct _icmp_host_cache *hc_head; + + for (hc = hc_head; hc; hc = hc->hc_next) { + if (hc->hc_ifindex == ifindex + && IN6_ARE_ADDR_EQUAL(&hc->hc_addr, addr)) + return hc->hc_name; + } + + if (pid == 0) + pid = getpid(); + + ICMP6_FILTER_SETBLOCKALL(&filter); + ICMP6_FILTER_SETPASS(ICMP6_FQDN_REPLY, &filter); + + FD_ZERO(&s_fds); + tout.tv_sec = 0; + tout.tv_usec = 200000; /*XXX: 200ms*/ + + fq = (struct icmp6_fqdn_query *)buf; + fq->icmp6_fqdn_type = ICMP6_FQDN_QUERY; + fq->icmp6_fqdn_code = 0; + fq->icmp6_fqdn_cksum = 0; + fq->icmp6_fqdn_id = (u_short)pid; + fq->icmp6_fqdn_unused = 0; + fq->icmp6_fqdn_cookie[0] = 0; + fq->icmp6_fqdn_cookie[1] = 0; + + memset(&sin6, 0, sizeof(sin6)); + sin6.sin6_family = AF_INET6; + sin6.sin6_addr = *addr; + + memset(&msg, 0, sizeof(msg)); + msg.msg_name = (caddr_t)&sin6; + msg.msg_namelen = sizeof(sin6); + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + msg.msg_control = NULL; + msg.msg_controllen = 0; + iov.iov_base = (caddr_t)buf; + iov.iov_len = sizeof(struct icmp6_fqdn_query); + + if (ifindex) { + msg.msg_control = cbuf; + msg.msg_controllen = sizeof(cbuf); + cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); + cmsg->cmsg_level = IPPROTO_IPV6; + cmsg->cmsg_type = IPV6_PKTINFO; + pkt = (struct in6_pktinfo *)&cmsg[1]; + memset(&pkt->ipi6_addr, 0, sizeof(struct in6_addr)); + pkt->ipi6_ifindex = ifindex; + cmsg = CMSG_NXTHDR(&msg, cmsg); + msg.msg_controllen = (char *)cmsg - cbuf; + } + + if ((s = socket(PF_INET6, SOCK_RAW, IPPROTO_ICMPV6)) < 0) + return NULL; + (void)setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, + (char *)&filter, sizeof(filter)); + cc = _sendmsg(s, &msg, 0); + if (cc < 0) { + close(s); + return NULL; + } + FD_SET(s, &s_fds); + for (;;) { + fds = s_fds; + if (select(s + 1, &fds, NULL, NULL, &tout) <= 0) { + close(s); + return NULL; + } + len = sizeof(sin6); + cc = _recvfrom(s, buf, sizeof(buf), 0, + (struct sockaddr *)&sin6, &len); + if (cc <= 0) { + close(s); + return NULL; + } + if (cc < sizeof(struct ip6_hdr) + sizeof(struct icmp6_hdr)) + continue; + if (!IN6_ARE_ADDR_EQUAL(addr, &sin6.sin6_addr)) + continue; + fr = (struct icmp6_fqdn_reply *)(buf + sizeof(struct ip6_hdr)); + if (fr->icmp6_fqdn_type == ICMP6_FQDN_REPLY) + break; + } + close(s); + if (fr->icmp6_fqdn_cookie[1] != 0) { + /* rfc1788 type */ + name = buf + sizeof(struct ip6_hdr) + sizeof(struct icmp6_hdr) + 4; + len = (buf + cc) - name; + } else { + len = fr->icmp6_fqdn_namelen; + name = fr->icmp6_fqdn_name; + } + if (len <= 0) + return NULL; + name[len] = 0; + + if ((hc = (struct _icmp_host_cache *)malloc(sizeof(*hc))) == NULL) + return NULL; + /* XXX: limit number of cached entries */ + hc->hc_ifindex = ifindex; + hc->hc_addr = *addr; + hc->hc_name = strdup(name); + hc->hc_next = hc_head; + hc_head = hc; + return hc->hc_name; +} + +static struct hostent * +_icmp_ghbyaddr(const void *addr, int addrlen, int af, int *errp) +{ + char *hname; + int ifindex; + struct in6_addr addr6; + + if (af != AF_INET6) { + /* + * Note: rfc1788 defines Who Are You for IPv4, + * but no one implements it. + */ + return NULL; + } + + memcpy(&addr6, addr, addrlen); + ifindex = (addr6.s6_addr[2] << 8) | addr6.s6_addr[3]; + addr6.s6_addr[2] = addr6.s6_addr[3] = 0; + + if (!IN6_IS_ADDR_LINKLOCAL(&addr6)) + return NULL; /*XXX*/ + + if ((hname = _icmp_fqdn_query(&addr6, ifindex)) == NULL) + return NULL; + return _hpaddr(af, hname, &addr6, errp); +} +#endif /* ICMPNL */ diff --git a/newlib/libc/sys/linux/net/namespace.h b/newlib/libc/sys/linux/net/namespace.h new file mode 100644 index 000000000..291aad580 --- /dev/null +++ b/newlib/libc/sys/linux/net/namespace.h @@ -0,0 +1,152 @@ +/* + * Copyright (c) 2001 Daniel Eischen <deischen@FreeBSD.org>. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD: src/lib/libc/include/namespace.h,v 1.9 2002/03/29 22:43:42 markm Exp $ + */ + +#ifndef _NAMESPACE_H_ +#define _NAMESPACE_H_ + +/* + * Adjust names so that headers declare "hidden" names. + */ + +/* + * ISO C (C90) section. Most names in libc aren't in ISO C, so they + * should be here. Most aren't here... + */ +#define err _err +#define warn _warn + +/* + * Prototypes for syscalls/functions that need to be overridden + * in libc_r/libpthread. + */ +#define accept _accept +#define __acl_aclcheck_fd ___acl_aclcheck_fd +#define __acl_delete_fd ___acl_delete_fd +#define __acl_get_fd ___acl_get_fd +#define __acl_set_fd ___acl_set_fd +#define bind _bind +#define __cap_get_fd ___cap_get_fd +#define __cap_set_fd ___cap_set_fd +#define close _close +#define connect _connect +#define dup _dup +#define dup2 _dup2 +#define execve _execve +#define fcntl _fcntl +/*#define flock _flock */ +#define fstat _fstat +#define fstatfs _fstatfs +#define fsync _fsync +#define getdirentries _getdirentries +#define getlogin _getlogin +#define getpeername _getpeername +#define getprogname _getprogname +#define getsockname _getsockname +#define getsockopt _getsockopt +#define ioctl _ioctl +#define listen _listen +#define nanosleep _nanosleep +#define open _open +#define poll _poll +#define pthread_cond_signal _pthread_cond_signal +#define pthread_cond_wait _pthread_cond_wait +#define pthread_cond_init _pthread_cond_init +#define pthread_exit _pthread_exit +#define pthread_getspecific _pthread_getspecific +#define pthread_key_create _pthread_key_create +#define pthread_key_delete _pthread_key_delete +#define pthread_main_np _pthread_main_np +#define pthread_mutex_destroy _pthread_mutex_destroy +#define pthread_mutex_init _pthread_mutex_init +#define pthread_mutex_lock _pthread_mutex_lock +#define pthread_mutex_trylock _pthread_mutex_trylock +#define pthread_mutex_unlock _pthread_mutex_unlock +#define pthread_mutexattr_init _pthread_mutexattr_init +#define pthread_mutexattr_destroy _pthread_mutexattr_destroy +#define pthread_mutexattr_settype _pthread_mutexattr_settype +#define pthread_once _pthread_once +#define pthread_rwlock_init _pthread_rwlock_init +#define pthread_rwlock_rdlock _pthread_rwlock_rdlock +#define pthread_rwlock_wrlock _pthread_rwlock_wrlock +#define pthread_rwlock_unlock _pthread_rwlock_unlock +#define pthread_self _pthread_self +#define pthread_setspecific _pthread_setspecific +#define pthread_sigmask _pthread_sigmask +#define read _read +#define readv _readv +#define recvfrom _recvfrom +#define recvmsg _recvmsg +#define select _select +#define sendmsg _sendmsg +#define sendto _sendto +#define setsockopt _setsockopt +/*#define sigaction _sigaction*/ +#define sigprocmask _sigprocmask +#define sigsuspend _sigsuspend +#define socket _socket +#define socketpair _socketpair +#define wait4 _wait4 +#define write _write +#define writev _writev + + +/* + * Other hidden syscalls/functions that libc_r needs to override + * but are not used internally by libc. + * + * XXX - When modifying libc to use one of the following, remove + * the prototype from below and place it in the list above. + */ +#if 0 +#define creat _creat +#define fchflags _fchflags +#define fchmod _fchmod +#define fpathconf _fpathconf +#define msync _msync +#define nfssvc _nfssvc +#define pause _pause +#define pthread_rwlock_destroy _pthread_rwlock_destroy +#define pthread_rwlock_tryrdlock _pthread_rwlock_tryrdlock +#define pthread_rwlock_trywrlock _pthread_rwlock_trywrlock +#define pthread_rwlockattr_init _pthread_rwlockattr_init +#define pthread_rwlockattr_destroy _pthread_rwlockattr_destroy +#define sched_yield _sched_yield +#define sendfile _sendfile +#define shutdown _shutdown +#define sigaltstack _sigaltstack +#define sigpending _sigpending +#define sigreturn _sigreturn +#define sigsetmask _sigsetmask +#define sleep _sleep +#define system _system +#define tcdrain _tcdrain +#define wait _wait +#define waitpid _waitpid +#endif + +#endif /* _NAMESPACE_H_ */ diff --git a/newlib/libc/sys/linux/net/ns.3 b/newlib/libc/sys/linux/net/ns.3 new file mode 100644 index 000000000..be8d155c3 --- /dev/null +++ b/newlib/libc/sys/linux/net/ns.3 @@ -0,0 +1,133 @@ +.\" Copyright (c) 1986, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)ns.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD: src/lib/libc/net/ns.3,v 1.10 2001/10/01 16:08:56 ru Exp $ +.\" +.Dd June 4, 1993 +.Dt NS 3 +.Os +.Sh NAME +.Nm ns_addr , +.Nm ns_ntoa +.Nd Xerox +.Tn NS Ns (tm) +address conversion routines +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In netns/ns.h +.Ft struct ns_addr +.Fn ns_addr "char *cp" +.Ft char * +.Fn ns_ntoa "struct ns_addr ns" +.Sh DESCRIPTION +The routine +.Fn ns_addr +interprets character strings representing +.Tn XNS +addresses, returning binary information suitable +for use in system calls. +The routine +.Fn ns_ntoa +takes +.Tn XNS +addresses and returns +.Tn ASCII +strings representing the address in a +notation in common use in the Xerox Development Environment: +.Bd -ragged -offset indent +<network number>.<host number>.<port number> +.Ed +.Pp +Trailing zero fields are suppressed, and each number is printed in hexadecimal, +in a format suitable for input to +.Fn ns_addr . +Any fields lacking super-decimal digits will have a +trailing +.Ql H +appended. +.Pp +Unfortunately, no universal standard exists for representing +.Tn XNS +addresses. +An effort has been made to insure that +.Fn ns_addr +be compatible with most formats in common use. +It will first separate an address into 1 to 3 fields using a single delimiter +chosen from +period +.Ql \&. , +colon +.Ql \&: +or pound-sign +.Ql \&# . +Each field is then examined for byte separators (colon or period). +If there are byte separators, each subfield separated is taken to be +a small hexadecimal number, and the entirety is taken as a network-byte-ordered +quantity to be zero extended in the high-network-order bytes. +Next, the field is inspected for hyphens, in which case +the field is assumed to be a number in decimal notation +with hyphens separating the millenia. +Next, the field is assumed to be a number: +It is interpreted +as hexadecimal if there is a leading +.Ql 0x +(as in C), +a trailing +.Ql H +(as in Mesa), or there are any super-decimal digits present. +It is interpreted as octal is there is a leading +.Ql 0 +and there are no super-octal digits. +Otherwise, it is converted as a decimal number. +.Sh RETURN VALUES +None. (See +.Sx BUGS . ) +.Sh SEE ALSO +.Xr hosts 5 , +.Xr networks 5 +.Sh HISTORY +The +.Fn ns_addr +and +.Fn ns_toa +functions appeared in +.Bx 4.3 . +.Sh BUGS +The string returned by +.Fn ns_ntoa +resides in a static memory area. +The function +.Fn ns_addr +should diagnose improperly formed input, and there should be an unambiguous +way to recognize this. diff --git a/newlib/libc/sys/linux/net/ns_addr.c b/newlib/libc/sys/linux/net/ns_addr.c new file mode 100644 index 000000000..a86cf31b7 --- /dev/null +++ b/newlib/libc/sys/linux/net/ns_addr.c @@ -0,0 +1,239 @@ +/* + * Copyright (c) 1986, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * J.Q. Johnson. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)ns_addr.c 8.1 (Berkeley) 6/7/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/param.h> +#include <arpa/inet.h> +#include <netns/ns.h> +#include <stdio.h> +#include <string.h> + +static struct ns_addr addr, zero_addr; + +static void Field(), cvtbase(); + +struct ns_addr +ns_addr(name) + const char *name; +{ + char separator; + char *hostname, *socketname, *cp; + char buf[50]; + + (void)strncpy(buf, name, sizeof(buf) - 1); + buf[sizeof(buf) - 1] = '\0'; + + /* + * First, figure out what he intends as a field separtor. + * Despite the way this routine is written, the preferred + * form 2-272.AA001234H.01777, i.e. XDE standard. + * Great efforts are made to insure backward compatibility. + */ + if ((hostname = strchr(buf, '#')) != NULL) + separator = '#'; + else { + hostname = strchr(buf, '.'); + if ((cp = strchr(buf, ':')) && + ((hostname && cp < hostname) || (hostname == 0))) { + hostname = cp; + separator = ':'; + } else + separator = '.'; + } + if (hostname) + *hostname++ = 0; + + addr = zero_addr; + Field(buf, addr.x_net.c_net, 4); + if (hostname == 0) + return (addr); /* No separator means net only */ + + socketname = strchr(hostname, separator); + if (socketname) { + *socketname++ = 0; + Field(socketname, (u_char *)&addr.x_port, 2); + } + + Field(hostname, addr.x_host.c_host, 6); + + return (addr); +} + +static void +Field(buf, out, len) + char *buf; + u_char *out; + int len; +{ + char *bp = buf; + int i, ibase, base16 = 0, base10 = 0, clen = 0; + int hb[6], *hp; + + /* + * first try 2-273#2-852-151-014#socket + */ + if ((*buf != '-') && + (1 < (i = sscanf(buf, "%d-%d-%d-%d-%d", + &hb[0], &hb[1], &hb[2], &hb[3], &hb[4])))) { + cvtbase(1000L, 256, hb, i, out, len); + return; + } + /* + * try form 8E1#0.0.AA.0.5E.E6#socket + */ + if (1 < (i = sscanf(buf,"%x.%x.%x.%x.%x.%x", + &hb[0], &hb[1], &hb[2], &hb[3], &hb[4], &hb[5]))) { + cvtbase(256L, 256, hb, i, out, len); + return; + } + /* + * try form 8E1#0:0:AA:0:5E:E6#socket + */ + if (1 < (i = sscanf(buf,"%x:%x:%x:%x:%x:%x", + &hb[0], &hb[1], &hb[2], &hb[3], &hb[4], &hb[5]))) { + cvtbase(256L, 256, hb, i, out, len); + return; + } + /* + * This is REALLY stretching it but there was a + * comma notation separting shorts -- definitely non standard + */ + if (1 < (i = sscanf(buf,"%x,%x,%x", + &hb[0], &hb[1], &hb[2]))) { + hb[0] = htons(hb[0]); hb[1] = htons(hb[1]); + hb[2] = htons(hb[2]); + cvtbase(65536L, 256, hb, i, out, len); + return; + } + + /* Need to decide if base 10, 16 or 8 */ + while (*bp) switch (*bp++) { + + case '0': case '1': case '2': case '3': case '4': case '5': + case '6': case '7': case '-': + break; + + case '8': case '9': + base10 = 1; + break; + + case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': + case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': + base16 = 1; + break; + + case 'x': case 'X': + *--bp = '0'; + base16 = 1; + break; + + case 'h': case 'H': + base16 = 1; + /* fall into */ + + default: + *--bp = 0; /* Ends Loop */ + } + if (base16) { + ibase = 4096; + } else if (base10 == 0 && *buf == '0') { + ibase = 512; + } else { + base10 = 1; + ibase = 1000; + } + + for (bp = buf; *bp++; ) clen++; + if (clen == 0) clen++; + if (clen > 18) clen = 18; + i = ((clen - 1) / 3) + 1; + bp = clen + buf - 3; + hp = hb + i - 1; + + while (hp > hb) { + if (base16) + (void)sscanf(bp, "%3x", hp); + else if (base10) + (void)sscanf(bp, "%3d", hp); + else + (void)sscanf(bp, "%3o", hp); + + bp[0] = 0; + hp--; + bp -= 3; + } + if (base16) + (void)sscanf(buf, "%3x", hp); + else if (base10) + (void)sscanf(buf, "%3d", hp); + else + (void)sscanf(buf, "%3o", hp); + + cvtbase((long)ibase, 256, hb, i, out, len); +} + +static void +cvtbase(oldbase,newbase,input,inlen,result,reslen) + long oldbase; + int newbase; + int input[]; + int inlen; + unsigned char result[]; + int reslen; +{ + int d, e; + long sum; + + e = 1; + while (e > 0 && reslen > 0) { + d = 0; e = 0; sum = 0; + /* long division: input=input/newbase */ + while (d < inlen) { + sum = sum*oldbase + (long) input[d]; + e += (sum > 0); + input[d++] = sum / newbase; + sum %= newbase; + } + result[--reslen] = sum; /* accumulate remainder */ + } + for (d=0; d < reslen; d++) + result[d] = 0; +} diff --git a/newlib/libc/sys/linux/net/ns_name.c b/newlib/libc/sys/linux/net/ns_name.c new file mode 100644 index 000000000..609df14f5 --- /dev/null +++ b/newlib/libc/sys/linux/net/ns_name.c @@ -0,0 +1,592 @@ +/* + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> + +#include <netinet/in.h> +#include <arpa/nameser.h> + +#include <errno.h> +#include <resolv.h> +#include <string.h> + +/* Data. */ + +static char digits[] = "0123456789"; + +/* Forward. */ + +static int special(int); +static int printable(int); +static int dn_find(const u_char *, const u_char *, + const u_char * const *, + const u_char * const *); + +/* Public. */ + +/* + * ns_name_ntop(src, dst, dstsiz) + * Convert an encoded domain name to printable ascii as per RFC1035. + * return: + * Number of bytes written to buffer, or -1 (with errno set) + * notes: + * The root is returned as "." + * All other domains are returned in non absolute form + */ +int +ns_name_ntop(const u_char *src, char *dst, size_t dstsiz) { + const u_char *cp; + char *dn, *eom; + u_char c; + u_int n; + + cp = src; + dn = dst; + eom = dst + dstsiz; + + while ((n = *cp++) != 0) { + if ((n & NS_CMPRSFLGS) != 0) { + /* Some kind of compression pointer. */ + errno = EMSGSIZE; + return (-1); + } + if (dn != dst) { + if (dn >= eom) { + errno = EMSGSIZE; + return (-1); + } + *dn++ = '.'; + } + if (dn + n >= eom) { + errno = EMSGSIZE; + return (-1); + } + for ((void)NULL; n > 0; n--) { + c = *cp++; + if (special(c)) { + if (dn + 1 >= eom) { + errno = EMSGSIZE; + return (-1); + } + *dn++ = '\\'; + *dn++ = (char)c; + } else if (!printable(c)) { + if (dn + 3 >= eom) { + errno = EMSGSIZE; + return (-1); + } + *dn++ = '\\'; + *dn++ = digits[c / 100]; + *dn++ = digits[(c % 100) / 10]; + *dn++ = digits[c % 10]; + } else { + if (dn >= eom) { + errno = EMSGSIZE; + return (-1); + } + *dn++ = (char)c; + } + } + } + if (dn == dst) { + if (dn >= eom) { + errno = EMSGSIZE; + return (-1); + } + *dn++ = '.'; + } + if (dn >= eom) { + errno = EMSGSIZE; + return (-1); + } + *dn++ = '\0'; + return (dn - dst); +} + +/* + * ns_name_pton(src, dst, dstsiz) + * Convert a ascii string into an encoded domain name as per RFC1035. + * return: + * -1 if it fails + * 1 if string was fully qualified + * 0 is string was not fully qualified + * notes: + * Enforces label and domain length limits. + */ + +int +ns_name_pton(const char *src, u_char *dst, size_t dstsiz) { + u_char *label, *bp, *eom; + int c, n, escaped; + char *cp; + + escaped = 0; + bp = dst; + eom = dst + dstsiz; + label = bp++; + + while ((c = *src++) != 0) { + if (escaped) { + if ((cp = strchr(digits, c)) != NULL) { + n = (cp - digits) * 100; + if ((c = *src++) == 0 || + (cp = strchr(digits, c)) == NULL) { + errno = EMSGSIZE; + return (-1); + } + n += (cp - digits) * 10; + if ((c = *src++) == 0 || + (cp = strchr(digits, c)) == NULL) { + errno = EMSGSIZE; + return (-1); + } + n += (cp - digits); + if (n > 255) { + errno = EMSGSIZE; + return (-1); + } + c = n; + } + escaped = 0; + } else if (c == '\\') { + escaped = 1; + continue; + } else if (c == '.') { + c = (bp - label - 1); + if ((c & NS_CMPRSFLGS) != 0) { /* Label too big. */ + errno = EMSGSIZE; + return (-1); + } + if (label >= eom) { + errno = EMSGSIZE; + return (-1); + } + *label = c; + /* Fully qualified ? */ + if (*src == '\0') { + if (c != 0) { + if (bp >= eom) { + errno = EMSGSIZE; + return (-1); + } + *bp++ = '\0'; + } + if ((bp - dst) > MAXCDNAME) { + errno = EMSGSIZE; + return (-1); + } + return (1); + } + if (c == 0) { + errno = EMSGSIZE; + return (-1); + } + label = bp++; + continue; + } + if (bp >= eom) { + errno = EMSGSIZE; + return (-1); + } + *bp++ = (u_char)c; + } + c = (bp - label - 1); + if ((c & NS_CMPRSFLGS) != 0) { /* Label too big. */ + errno = EMSGSIZE; + return (-1); + } + if (label >= eom) { + errno = EMSGSIZE; + return (-1); + } + *label = c; + if (c != 0) { + if (bp >= eom) { + errno = EMSGSIZE; + return (-1); + } + *bp++ = 0; + } + if ((bp - dst) > MAXCDNAME) { /* src too big */ + errno = EMSGSIZE; + return (-1); + } + return (0); +} + +/* + * ns_name_unpack(msg, eom, src, dst, dstsiz) + * Unpack a domain name from a message, source may be compressed. + * return: + * -1 if it fails, or consumed octets if it succeeds. + */ +int +ns_name_unpack(const u_char *msg, const u_char *eom, const u_char *src, + u_char *dst, size_t dstsiz) +{ + const u_char *srcp, *dstlim; + u_char *dstp; + int n, len, checked; + + len = -1; + checked = 0; + dstp = dst; + srcp = src; + dstlim = dst + dstsiz; + if (srcp < msg || srcp >= eom) { + errno = EMSGSIZE; + return (-1); + } + /* Fetch next label in domain name. */ + while ((n = *srcp++) != 0) { + /* Check for indirection. */ + switch (n & NS_CMPRSFLGS) { + case 0: + /* Limit checks. */ + if (dstp + n + 1 >= dstlim || srcp + n >= eom) { + errno = EMSGSIZE; + return (-1); + } + checked += n + 1; + *dstp++ = n; + memcpy(dstp, srcp, n); + dstp += n; + srcp += n; + break; + + case NS_CMPRSFLGS: + if (srcp >= eom) { + errno = EMSGSIZE; + return (-1); + } + if (len < 0) + len = srcp - src + 1; + srcp = msg + (((n & 0x3f) << 8) | (*srcp & 0xff)); + if (srcp < msg || srcp >= eom) { /* Out of range. */ + errno = EMSGSIZE; + return (-1); + } + checked += 2; + /* + * Check for loops in the compressed name; + * if we've looked at the whole message, + * there must be a loop. + */ + if (checked >= eom - msg) { + errno = EMSGSIZE; + return (-1); + } + break; + + default: + errno = EMSGSIZE; + return (-1); /* flag error */ + } + } + *dstp = '\0'; + if (len < 0) + len = srcp - src; + return (len); +} + +/* + * ns_name_pack(src, dst, dstsiz, dnptrs, lastdnptr) + * Pack domain name 'domain' into 'comp_dn'. + * return: + * Size of the compressed name, or -1. + * notes: + * 'dnptrs' is an array of pointers to previous compressed names. + * dnptrs[0] is a pointer to the beginning of the message. The array + * ends with NULL. + * 'lastdnptr' is a pointer to the end of the array pointed to + * by 'dnptrs'. + * Side effects: + * The list of pointers in dnptrs is updated for labels inserted into + * the message as we compress the name. If 'dnptr' is NULL, we don't + * try to compress names. If 'lastdnptr' is NULL, we don't update the + * list. + */ +int +ns_name_pack(const u_char *src, u_char *dst, int dstsiz, + const u_char **dnptrs, const u_char **lastdnptr) +{ + u_char *dstp; + const u_char **cpp, **lpp, *eob, *msg; + const u_char *srcp; + int n, l; + + srcp = src; + dstp = dst; + eob = dstp + dstsiz; + lpp = cpp = NULL; + if (dnptrs != NULL) { + if ((msg = *dnptrs++) != NULL) { + for (cpp = dnptrs; *cpp != NULL; cpp++) + (void)NULL; + lpp = cpp; /* end of list to search */ + } + } else + msg = NULL; + + /* make sure the domain we are about to add is legal */ + l = 0; + do { + n = *srcp; + if ((n & NS_CMPRSFLGS) != 0) { + errno = EMSGSIZE; + return (-1); + } + l += n + 1; + if (l > MAXCDNAME) { + errno = EMSGSIZE; + return (-1); + } + srcp += n + 1; + } while (n != 0); + + srcp = src; + do { + /* Look to see if we can use pointers. */ + n = *srcp; + if (n != 0 && msg != NULL) { + l = dn_find(srcp, msg, (const u_char * const *)dnptrs, + (const u_char * const *)lpp); + if (l >= 0) { + if (dstp + 1 >= eob) { + errno = EMSGSIZE; + return (-1); + } + *dstp++ = (l >> 8) | NS_CMPRSFLGS; + *dstp++ = l % 256; + return (dstp - dst); + } + /* Not found, save it. */ + if (lastdnptr != NULL && cpp < lastdnptr - 1 && + (dstp - msg) < 0x4000) { + *cpp++ = dstp; + *cpp = NULL; + } + } + /* copy label to buffer */ + if (n & NS_CMPRSFLGS) { /* Should not happen. */ + errno = EMSGSIZE; + return (-1); + } + if (dstp + 1 + n >= eob) { + errno = EMSGSIZE; + return (-1); + } + memcpy(dstp, srcp, n + 1); + srcp += n + 1; + dstp += n + 1; + } while (n != 0); + + if (dstp > eob) { + if (msg != NULL) + *lpp = NULL; + errno = EMSGSIZE; + return (-1); + } + return (dstp - dst); +} + +/* + * ns_name_uncompress(msg, eom, src, dst, dstsiz) + * Expand compressed domain name to presentation format. + * return: + * Number of bytes read out of `src', or -1 (with errno set). + * note: + * Root domain returns as "." not "". + */ +int +ns_name_uncompress(const u_char *msg, const u_char *eom, const u_char *src, + char *dst, size_t dstsiz) +{ + u_char tmp[NS_MAXCDNAME]; + int n; + + if ((n = ns_name_unpack(msg, eom, src, tmp, sizeof tmp)) == -1) + return (-1); + if (ns_name_ntop(tmp, dst, dstsiz) == -1) + return (-1); + return (n); +} + +/* + * ns_name_compress(src, dst, dstsiz, dnptrs, lastdnptr) + * Compress a domain name into wire format, using compression pointers. + * return: + * Number of bytes consumed in `dst' or -1 (with errno set). + * notes: + * 'dnptrs' is an array of pointers to previous compressed names. + * dnptrs[0] is a pointer to the beginning of the message. + * The list ends with NULL. 'lastdnptr' is a pointer to the end of the + * array pointed to by 'dnptrs'. Side effect is to update the list of + * pointers for labels inserted into the message as we compress the name. + * If 'dnptr' is NULL, we don't try to compress names. If 'lastdnptr' + * is NULL, we don't update the list. + */ +int +ns_name_compress(const char *src, u_char *dst, size_t dstsiz, + const u_char **dnptrs, const u_char **lastdnptr) +{ + u_char tmp[NS_MAXCDNAME]; + + if (ns_name_pton(src, tmp, sizeof tmp) == -1) + return (-1); + return (ns_name_pack(tmp, dst, dstsiz, dnptrs, lastdnptr)); +} + +/* + * ns_name_skip(ptrptr, eom) + * Advance *ptrptr to skip over the compressed name it points at. + * return: + * 0 on success, -1 (with errno set) on failure. + */ +int +ns_name_skip(const u_char **ptrptr, const u_char *eom) { + const u_char *cp; + u_int n; + + cp = *ptrptr; + while (cp < eom && (n = *cp++) != 0) { + /* Check for indirection. */ + switch (n & NS_CMPRSFLGS) { + case 0: /* normal case, n == len */ + cp += n; + continue; + case NS_CMPRSFLGS: /* indirection */ + cp++; + break; + default: /* illegal type */ + errno = EMSGSIZE; + return (-1); + } + break; + } + if (cp > eom) { + errno = EMSGSIZE; + return (-1); + } + *ptrptr = cp; + return (0); +} + +/* Private. */ + +/* + * special(ch) + * Thinking in noninternationalized USASCII (per the DNS spec), + * is this characted special ("in need of quoting") ? + * return: + * boolean. + */ +static int +special(int ch) { + switch (ch) { + case 0x22: /* '"' */ + case 0x2E: /* '.' */ + case 0x3B: /* ';' */ + case 0x5C: /* '\\' */ + /* Special modifiers in zone files. */ + case 0x40: /* '@' */ + case 0x24: /* '$' */ + return (1); + default: + return (0); + } +} + +/* + * printable(ch) + * Thinking in noninternationalized USASCII (per the DNS spec), + * is this character visible and not a space when printed ? + * return: + * boolean. + */ +static int +printable(int ch) { + return (ch > 0x20 && ch < 0x7f); +} + +/* + * Thinking in noninternationalized USASCII (per the DNS spec), + * convert this character to lower case if it's upper case. + */ +static int +mklower(int ch) { + if (ch >= 0x41 && ch <= 0x5A) + return (ch + 0x20); + return (ch); +} + +/* + * dn_find(domain, msg, dnptrs, lastdnptr) + * Search for the counted-label name in an array of compressed names. + * return: + * offset from msg if found, or -1. + * notes: + * dnptrs is the pointer to the first name on the list, + * not the pointer to the start of the message. + */ +static int +dn_find(const u_char *domain, const u_char *msg, + const u_char * const *dnptrs, + const u_char * const *lastdnptr) +{ + const u_char *dn, *cp, *sp; + const u_char * const *cpp; + u_int n; + + for (cpp = dnptrs; cpp < lastdnptr; cpp++) { + dn = domain; + sp = cp = *cpp; + while ((n = *cp++) != 0) { + /* + * check for indirection + */ + switch (n & NS_CMPRSFLGS) { + case 0: /* normal case, n == len */ + if (n != *dn++) + goto next; + for ((void)NULL; n > 0; n--) + if (mklower(*dn++) != mklower(*cp++)) + goto next; + /* Is next root for both ? */ + if (*dn == '\0' && *cp == '\0') + return (sp - msg); + if (*dn) + continue; + goto next; + + case NS_CMPRSFLGS: /* indirection */ + cp = msg + (((n & 0x3f) << 8) | *cp); + break; + + default: /* illegal type */ + errno = EMSGSIZE; + return (-1); + } + } + next: ; + } + errno = ENOENT; + return (-1); +} diff --git a/newlib/libc/sys/linux/net/ns_netint.c b/newlib/libc/sys/linux/net/ns_netint.c new file mode 100644 index 000000000..18c9cccd6 --- /dev/null +++ b/newlib/libc/sys/linux/net/ns_netint.c @@ -0,0 +1,53 @@ +/* + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> + +/* Import. */ + +#include <sys/types.h> +#include <sys/socket.h> + +#include <netinet/in.h> +#include <arpa/nameser.h> + +u_int +ns_get16(const u_char *src) { + u_int dst; + + NS_GET16(dst, src); + return (dst); +} + +u_long +ns_get32(const u_char *src) { + u_long dst; + + NS_GET32(dst, src); + return (dst); +} + +void +ns_put16(u_int src, u_char *dst) { + NS_PUT16(src, dst); +} + +void +ns_put32(u_long src, u_char *dst) { + NS_PUT32(src, dst); +} diff --git a/newlib/libc/sys/linux/net/ns_ntoa.c b/newlib/libc/sys/linux/net/ns_ntoa.c new file mode 100644 index 000000000..018076064 --- /dev/null +++ b/newlib/libc/sys/linux/net/ns_ntoa.c @@ -0,0 +1,104 @@ +/* + * Copyright (c) 1986, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)ns_ntoa.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> +#include <machine/endian.h> + +#include <sys/param.h> +#include <arpa/inet.h> +#include <netns/ns.h> +#include <stdio.h> + +char * +ns_ntoa(addr) + struct ns_addr addr; +{ + static char obuf[40]; + union { union ns_net net_e; u_long long_e; } net; + u_short port = htons(addr.x_port); + char *cp; + char *cp2; + u_char *up = addr.x_host.c_host; + u_char *uplim = up + 6; + static char *spectHex(); + + net.net_e = addr.x_net; + sprintf(obuf, "%lx", (u_long)ntohl(net.long_e)); + cp = spectHex(obuf); + cp2 = cp + 1; + while (*up==0 && up < uplim) up++; + if (up == uplim) { + if (port) { + sprintf(cp, ".0"); + cp += 2; + } + } else { + sprintf(cp, ".%x", *up++); + while (up < uplim) { + while (*cp) cp++; + sprintf(cp, "%02x", *up++); + } + cp = spectHex(cp2); + } + if (port) { + sprintf(cp, ".%x", port); + spectHex(cp + 1); + } + return (obuf); +} + +static char * +spectHex(p0) + char *p0; +{ + int ok = 0; + int nonzero = 0; + char *p = p0; + for (; *p; p++) switch (*p) { + + case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': + *p += ('A' - 'a'); + /* fall into . . . */ + case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': + ok = 1; + case '1': case '2': case '3': case '4': case '5': + case '6': case '7': case '8': case '9': + nonzero = 1; + } + if (nonzero && !ok) { *p++ = 'H'; *p = 0; } + return (p); +} diff --git a/newlib/libc/sys/linux/net/ns_parse.c b/newlib/libc/sys/linux/net/ns_parse.c new file mode 100644 index 000000000..38a684b87 --- /dev/null +++ b/newlib/libc/sys/linux/net/ns_parse.c @@ -0,0 +1,189 @@ +/* + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> + +#include <netinet/in.h> +#include <arpa/nameser.h> + +#include <errno.h> +#include <resolv.h> +#include <string.h> + +/* These need to be in the same order as the nres.h:ns_flag enum. */ +struct _ns_flagdata _ns_flagdata[16] = { + { 0x8000, 15 }, /* qr. */ + { 0x7800, 11 }, /* opcode. */ + { 0x0400, 10 }, /* aa. */ + { 0x0200, 9 }, /* tc. */ + { 0x0100, 8 }, /* rd. */ + { 0x0080, 7 }, /* ra. */ + { 0x0040, 6 }, /* z. */ + { 0x0020, 5 }, /* ad. */ + { 0x0010, 4 }, /* cd. */ + { 0x000f, 0 }, /* rcode. */ + { 0x0000, 0 }, /* expansion (1/6). */ + { 0x0000, 0 }, /* expansion (2/6). */ + { 0x0000, 0 }, /* expansion (3/6). */ + { 0x0000, 0 }, /* expansion (4/6). */ + { 0x0000, 0 }, /* expansion (5/6). */ + { 0x0000, 0 }, /* expansion (6/6). */ +}; + +static int +skiprr(const u_char *ptr, const u_char *eom, ns_sect section, int count) { + const u_char *optr = ptr; + + for ((void)NULL; count > 0; count--) { + int b, rdlength; + + b = dn_skipname(ptr, eom); + if (b < 0) + goto emsgsize; + ptr += b/*Name*/ + NS_INT16SZ/*Type*/ + NS_INT16SZ/*Class*/; + if (section != ns_s_qd) { + if (ptr + NS_INT32SZ > eom) + goto emsgsize; + ptr += NS_INT32SZ/*TTL*/; + if (ptr + NS_INT16SZ > eom) + goto emsgsize; + NS_GET16(rdlength, ptr); + ptr += rdlength/*RData*/; + } + } + if (ptr > eom) + goto emsgsize; + return (ptr - optr); + emsgsize: + errno = EMSGSIZE; + return (-1); +} + +int +ns_initparse(const u_char *msg, int msglen, ns_msg *handle) { + const u_char *eom = msg + msglen; + int i; + + memset(handle, 0x5e, sizeof *handle); + handle->_msg = msg; + handle->_eom = eom; + if (msg + NS_INT16SZ > eom) + goto emsgsize; + NS_GET16(handle->_id, msg); + if (msg + NS_INT16SZ > eom) + goto emsgsize; + NS_GET16(handle->_flags, msg); + for (i = 0; i < ns_s_max; i++) { + if (msg + NS_INT16SZ > eom) + goto emsgsize; + NS_GET16(handle->_counts[i], msg); + } + for (i = 0; i < ns_s_max; i++) + if (handle->_counts[i] == 0) + handle->_sections[i] = NULL; + else { + int b = skiprr(msg, eom, (ns_sect)i, + handle->_counts[i]); + + if (b < 0) + return (-1); + handle->_sections[i] = msg; + msg += b; + } + if (msg != eom) + goto emsgsize; + handle->_sect = ns_s_max; + handle->_rrnum = -1; + handle->_ptr = NULL; + return (0); + emsgsize: + errno = EMSGSIZE; + return (-1); +} + +int +ns_parserr(ns_msg *handle, ns_sect section, int rrnum, ns_rr *rr) { + int b; + + /* Make section right. */ + if (section < 0 || section >= ns_s_max) + goto enodev; + if ((int)section != (int)handle->_sect) { + handle->_sect = section; + handle->_rrnum = 0; + handle->_ptr = handle->_sections[(int)section]; + } + + /* Make rrnum right. */ + if (rrnum == -1) + rrnum = handle->_rrnum; + if (rrnum < 0 || rrnum >= handle->_counts[(int)section]) + goto enodev; + if (rrnum < handle->_rrnum) { + handle->_rrnum = 0; + handle->_ptr = handle->_sections[(int)section]; + } + + b = skiprr(handle->_msg, handle->_eom, section, + rrnum - handle->_rrnum); + if (b < 0) + return (-1); + handle->_ptr += b; + handle->_rrnum = rrnum; + + /* Do the parse. */ + b = dn_expand(handle->_msg, handle->_eom, + handle->_ptr, rr->name, NS_MAXDNAME); + if (b < 0) + return (-1); + handle->_ptr += b; + if (handle->_ptr + NS_INT16SZ > handle->_eom) + goto emsgsize; + NS_GET16(rr->type, handle->_ptr); + if (handle->_ptr + NS_INT16SZ > handle->_eom) + goto emsgsize; + NS_GET16(rr->rr_class, handle->_ptr); + if (section == ns_s_qd) { + rr->ttl = 0; + rr->rdlength = 0; + rr->rdata = NULL; + } else { + if (handle->_ptr + NS_INT32SZ > handle->_eom) + goto emsgsize; + NS_GET32(rr->ttl, handle->_ptr); + if (handle->_ptr + NS_INT16SZ > handle->_eom) + goto emsgsize; + NS_GET16(rr->rdlength, handle->_ptr); + if (handle->_ptr + rr->rdlength > handle->_eom) + goto emsgsize; + rr->rdata = handle->_ptr; + handle->_ptr += rr->rdlength; + } + handle->_rrnum++; + + /* All done. */ + return (0); + enodev: + errno = ENODEV; + return (-1); + emsgsize: + errno = EMSGSIZE; + return (-1); +} diff --git a/newlib/libc/sys/linux/net/ns_print.c b/newlib/libc/sys/linux/net/ns_print.c new file mode 100644 index 000000000..7cce6d7aa --- /dev/null +++ b/newlib/libc/sys/linux/net/ns_print.c @@ -0,0 +1,744 @@ +/* + * Copyright (c) 1996, 1998 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#define MIN(a,b) ((a) < (b) ? (a) : (b)) + +#include <sys/cdefs.h> +#include <sys/types.h> + +/* Import. */ + +#include <sys/types.h> +#include <sys/socket.h> + +#include <netinet/in.h> +#include <arpa/nameser.h> +#include <arpa/inet.h> + +#include <assert.h> +#include <errno.h> +#include <resolv.h> +#include <string.h> +#include <ctype.h> + +#define SPRINTF(x) ((size_t)sprintf x) + +/* Forward. */ + +static size_t prune_origin(const char *name, const char *origin); +static int charstr(const u_char *rdata, const u_char *edata, + char **buf, size_t *buflen); +static int addname(const u_char *msg, size_t msglen, + const u_char **p, const char *origin, + char **buf, size_t *buflen); +static void addlen(size_t len, char **buf, size_t *buflen); +static int addstr(const char *src, size_t len, + char **buf, size_t *buflen); +static int addtab(size_t len, size_t target, int spaced, + char **buf, size_t *buflen); + +/* Macros. */ + +#define T(x) \ + do { \ + if ((x) < 0) \ + return (-1); \ + } while (0) + +/* Public. */ + +/* + * int + * ns_sprintrr(handle, rr, name_ctx, origin, buf, buflen) + * Convert an RR to presentation format. + * return: + * Number of characters written to buf, or -1 (check errno). + */ +int +ns_sprintrr(const ns_msg *handle, const ns_rr *rr, + const char *name_ctx, const char *origin, + char *buf, size_t buflen) +{ + int n; + + n = ns_sprintrrf(ns_msg_base(*handle), ns_msg_size(*handle), + ns_rr_name(*rr), ns_rr_class(*rr), ns_rr_type(*rr), + ns_rr_ttl(*rr), ns_rr_rdata(*rr), ns_rr_rdlen(*rr), + name_ctx, origin, buf, buflen); + return (n); +} + +/* + * int + * ns_sprintrrf(msg, msglen, name, class, type, ttl, rdata, rdlen, + * name_ctx, origin, buf, buflen) + * Convert the fields of an RR into presentation format. + * return: + * Number of characters written to buf, or -1 (check errno). + */ +int +ns_sprintrrf(const u_char *msg, size_t msglen, + const char *name, ns_class class, ns_type type, + u_long ttl, const u_char *rdata, size_t rdlen, + const char *name_ctx, const char *origin, + char *buf, size_t buflen) +{ + const char *obuf = buf; + const u_char *edata = rdata + rdlen; + int spaced = 0; + + const char *comment; + char tmp[100]; + int len, x; + + /* + * Owner. + */ + if (name_ctx != NULL && strcasecmp(name_ctx, name) == 0) { + T(addstr("\t\t\t", 3, &buf, &buflen)); + } else { + len = prune_origin(name, origin); + if (len == 0) { + T(addstr("@\t\t\t", 4, &buf, &buflen)); + } else { + T(addstr(name, len, &buf, &buflen)); + /* Origin not used and no trailing dot? */ + if ((!origin || !origin[0] || name[len] == '\0') && + name[len - 1] != '.') { + T(addstr(".", 1, &buf, &buflen)); + len++; + } + T(spaced = addtab(len, 24, spaced, &buf, &buflen)); + } + } + + /* + * TTL, Class, Type. + */ + T(x = ns_format_ttl(ttl, buf, buflen)); + addlen(x, &buf, &buflen); + len = SPRINTF((tmp, " %s %s", p_class(class), p_type(type))); + T(addstr(tmp, len, &buf, &buflen)); + T(spaced = addtab(x + len, 16, spaced, &buf, &buflen)); + + /* + * RData. + */ + switch (type) { + case ns_t_a: + if (rdlen != NS_INADDRSZ) + goto formerr; + (void) inet_ntop(AF_INET, rdata, buf, buflen); + addlen(strlen(buf), &buf, &buflen); + break; + + case ns_t_cname: + case ns_t_mb: + case ns_t_mg: + case ns_t_mr: + case ns_t_ns: + case ns_t_ptr: + T(addname(msg, msglen, &rdata, origin, &buf, &buflen)); + break; + + case ns_t_hinfo: + case ns_t_isdn: + /* First word. */ + T(len = charstr(rdata, edata, &buf, &buflen)); + if (len == 0) + goto formerr; + rdata += len; + T(addstr(" ", 1, &buf, &buflen)); + + /* Second word. */ + T(len = charstr(rdata, edata, &buf, &buflen)); + if (len == 0) + goto formerr; + rdata += len; + break; + + case ns_t_soa: { + u_long t; + + /* Server name. */ + T(addname(msg, msglen, &rdata, origin, &buf, &buflen)); + T(addstr(" ", 1, &buf, &buflen)); + + /* Administrator name. */ + T(addname(msg, msglen, &rdata, origin, &buf, &buflen)); + T(addstr(" (\n", 3, &buf, &buflen)); + spaced = 0; + + if ((edata - rdata) != 5*NS_INT32SZ) + goto formerr; + + /* Serial number. */ + t = ns_get32(rdata); rdata += NS_INT32SZ; + T(addstr("\t\t\t\t\t", 5, &buf, &buflen)); + len = SPRINTF((tmp, "%lu", t)); + T(addstr(tmp, len, &buf, &buflen)); + T(spaced = addtab(len, 16, spaced, &buf, &buflen)); + T(addstr("; serial\n", 9, &buf, &buflen)); + spaced = 0; + + /* Refresh interval. */ + t = ns_get32(rdata); rdata += NS_INT32SZ; + T(addstr("\t\t\t\t\t", 5, &buf, &buflen)); + T(len = ns_format_ttl(t, buf, buflen)); + addlen(len, &buf, &buflen); + T(spaced = addtab(len, 16, spaced, &buf, &buflen)); + T(addstr("; refresh\n", 10, &buf, &buflen)); + spaced = 0; + + /* Retry interval. */ + t = ns_get32(rdata); rdata += NS_INT32SZ; + T(addstr("\t\t\t\t\t", 5, &buf, &buflen)); + T(len = ns_format_ttl(t, buf, buflen)); + addlen(len, &buf, &buflen); + T(spaced = addtab(len, 16, spaced, &buf, &buflen)); + T(addstr("; retry\n", 8, &buf, &buflen)); + spaced = 0; + + /* Expiry. */ + t = ns_get32(rdata); rdata += NS_INT32SZ; + T(addstr("\t\t\t\t\t", 5, &buf, &buflen)); + T(len = ns_format_ttl(t, buf, buflen)); + addlen(len, &buf, &buflen); + T(spaced = addtab(len, 16, spaced, &buf, &buflen)); + T(addstr("; expiry\n", 9, &buf, &buflen)); + spaced = 0; + + /* Minimum TTL. */ + t = ns_get32(rdata); rdata += NS_INT32SZ; + T(addstr("\t\t\t\t\t", 5, &buf, &buflen)); + T(len = ns_format_ttl(t, buf, buflen)); + addlen(len, &buf, &buflen); + T(addstr(" )", 2, &buf, &buflen)); + T(spaced = addtab(len, 16, spaced, &buf, &buflen)); + T(addstr("; minimum\n", 10, &buf, &buflen)); + + break; + } + + case ns_t_mx: + case ns_t_afsdb: + case ns_t_rt: { + u_int t; + + if (rdlen < NS_INT16SZ) + goto formerr; + + /* Priority. */ + t = ns_get16(rdata); + rdata += NS_INT16SZ; + len = SPRINTF((tmp, "%u ", t)); + T(addstr(tmp, len, &buf, &buflen)); + + /* Target. */ + T(addname(msg, msglen, &rdata, origin, &buf, &buflen)); + + break; + } + + case ns_t_px: { + u_int t; + + if (rdlen < NS_INT16SZ) + goto formerr; + + /* Priority. */ + t = ns_get16(rdata); + rdata += NS_INT16SZ; + len = SPRINTF((tmp, "%u ", t)); + T(addstr(tmp, len, &buf, &buflen)); + + /* Name1. */ + T(addname(msg, msglen, &rdata, origin, &buf, &buflen)); + T(addstr(" ", 1, &buf, &buflen)); + + /* Name2. */ + T(addname(msg, msglen, &rdata, origin, &buf, &buflen)); + + break; + } + + case ns_t_x25: + T(len = charstr(rdata, edata, &buf, &buflen)); + if (len == 0) + goto formerr; + rdata += len; + break; + + case ns_t_txt: + while (rdata < edata) { + T(len = charstr(rdata, edata, &buf, &buflen)); + if (len == 0) + goto formerr; + rdata += len; + if (rdata < edata) + T(addstr(" ", 1, &buf, &buflen)); + } + break; + + case ns_t_nsap: { + char t[255*3]; + + (void) inet_nsap_ntoa(rdlen, rdata, t); + T(addstr(t, strlen(t), &buf, &buflen)); + break; + } + + case ns_t_aaaa: + if (rdlen != NS_IN6ADDRSZ) + goto formerr; + (void) inet_ntop(AF_INET6, rdata, buf, buflen); + addlen(strlen(buf), &buf, &buflen); + break; + + case ns_t_loc: { + char t[255]; + + /* XXX protocol format checking? */ + (void) loc_ntoa(rdata, t); + T(addstr(t, strlen(t), &buf, &buflen)); + break; + } + + case ns_t_naptr: { + u_int order, preference; + char t[50]; + + if (rdlen < 2*NS_INT16SZ) + goto formerr; + + /* Order, Precedence. */ + order = ns_get16(rdata); rdata += NS_INT16SZ; + preference = ns_get16(rdata); rdata += NS_INT16SZ; + len = SPRINTF((t, "%u %u ", order, preference)); + T(addstr(t, len, &buf, &buflen)); + + /* Flags. */ + T(len = charstr(rdata, edata, &buf, &buflen)); + if (len == 0) + goto formerr; + rdata += len; + T(addstr(" ", 1, &buf, &buflen)); + + /* Service. */ + T(len = charstr(rdata, edata, &buf, &buflen)); + if (len == 0) + goto formerr; + rdata += len; + T(addstr(" ", 1, &buf, &buflen)); + + /* Regexp. */ + T(len = charstr(rdata, edata, &buf, &buflen)); + if (len < 0) + return (-1); + if (len == 0) + goto formerr; + rdata += len; + T(addstr(" ", 1, &buf, &buflen)); + + /* Server. */ + T(addname(msg, msglen, &rdata, origin, &buf, &buflen)); + break; + } + + case ns_t_srv: { + u_int priority, weight, port; + char t[50]; + + if (rdlen < NS_INT16SZ*3) + goto formerr; + + /* Priority, Weight, Port. */ + priority = ns_get16(rdata); rdata += NS_INT16SZ; + weight = ns_get16(rdata); rdata += NS_INT16SZ; + port = ns_get16(rdata); rdata += NS_INT16SZ; + len = SPRINTF((t, "%u %u %u ", priority, weight, port)); + T(addstr(t, len, &buf, &buflen)); + + /* Server. */ + T(addname(msg, msglen, &rdata, origin, &buf, &buflen)); + break; + } + + case ns_t_minfo: + case ns_t_rp: + /* Name1. */ + T(addname(msg, msglen, &rdata, origin, &buf, &buflen)); + T(addstr(" ", 1, &buf, &buflen)); + + /* Name2. */ + T(addname(msg, msglen, &rdata, origin, &buf, &buflen)); + + break; + + case ns_t_wks: { + int n, lcnt; + + if (rdlen < NS_INT32SZ + 1) + goto formerr; + + /* Address. */ + (void) inet_ntop(AF_INET, rdata, buf, buflen); + addlen(strlen(buf), &buf, &buflen); + rdata += NS_INADDRSZ; + + /* Protocol. */ + len = SPRINTF((tmp, " %u ( ", *rdata)); + T(addstr(tmp, len, &buf, &buflen)); + rdata += NS_INT8SZ; + + /* Bit map. */ + n = 0; + lcnt = 0; + while (rdata < edata) { + u_int c = *rdata++; + do { + if (c & 0200) { + if (lcnt == 0) { + T(addstr("\n\t\t\t\t", 5, + &buf, &buflen)); + lcnt = 10; + spaced = 0; + } + len = SPRINTF((tmp, "%d ", n)); + T(addstr(tmp, len, &buf, &buflen)); + lcnt--; + } + c <<= 1; + } while (++n & 07); + } + T(addstr(")", 1, &buf, &buflen)); + + break; + } + + case ns_t_key: { + char base64_key[NS_MD5RSA_MAX_BASE64]; + u_int keyflags, protocol, algorithm; + const char *leader; + int n; + + if (rdlen < NS_INT16SZ + NS_INT8SZ + NS_INT8SZ) + goto formerr; + + /* Key flags, Protocol, Algorithm. */ + keyflags = ns_get16(rdata); rdata += NS_INT16SZ; + protocol = *rdata++; + algorithm = *rdata++; + len = SPRINTF((tmp, "0x%04x %u %u", + keyflags, protocol, algorithm)); + T(addstr(tmp, len, &buf, &buflen)); + + /* Public key data. */ + len = b64_ntop(rdata, edata - rdata, + base64_key, sizeof base64_key); + if (len < 0) + goto formerr; + if (len > 15) { + T(addstr(" (", 2, &buf, &buflen)); + leader = "\n\t\t"; + spaced = 0; + } else + leader = " "; + for (n = 0; n < len; n += 48) { + T(addstr(leader, strlen(leader), &buf, &buflen)); + T(addstr(base64_key + n, MIN(len - n, 48), + &buf, &buflen)); + } + if (len > 15) + T(addstr(" )", 2, &buf, &buflen)); + + break; + } + + case ns_t_sig: { + char base64_key[NS_MD5RSA_MAX_BASE64]; + u_int type, algorithm, labels, footprint; + const char *leader; + u_long t; + int n; + + if (rdlen < 22) + goto formerr; + + /* Type covered, Algorithm, Label count, Original TTL. */ + type = ns_get16(rdata); rdata += NS_INT16SZ; + algorithm = *rdata++; + labels = *rdata++; + t = ns_get32(rdata); rdata += NS_INT32SZ; + len = SPRINTF((tmp, " %s %d %lu ", + p_type(type), algorithm, t)); + T(addstr(tmp, len, &buf, &buflen)); + if (labels != (u_int)dn_count_labels(name)) + goto formerr; + + /* Signature expiry. */ + t = ns_get32(rdata); rdata += NS_INT32SZ; + len = SPRINTF((tmp, "%s ", p_secstodate(t))); + T(addstr(tmp, len, &buf, &buflen)); + + /* Time signed. */ + t = ns_get32(rdata); rdata += NS_INT32SZ; + len = SPRINTF((tmp, "%s ", p_secstodate(t))); + T(addstr(tmp, len, &buf, &buflen)); + + /* Signature Footprint. */ + footprint = ns_get16(rdata); rdata += NS_INT16SZ; + len = SPRINTF((tmp, "%u ", footprint)); + T(addstr(tmp, len, &buf, &buflen)); + + /* Signer's name. */ + T(addname(msg, msglen, &rdata, origin, &buf, &buflen)); + + /* Signature. */ + len = b64_ntop(rdata, edata - rdata, + base64_key, sizeof base64_key); + if (len > 15) { + T(addstr(" (", 2, &buf, &buflen)); + leader = "\n\t\t"; + spaced = 0; + } else + leader = " "; + if (len < 0) + goto formerr; + for (n = 0; n < len; n += 48) { + T(addstr(leader, strlen(leader), &buf, &buflen)); + T(addstr(base64_key + n, MIN(len - n, 48), + &buf, &buflen)); + } + if (len > 15) + T(addstr(" )", 2, &buf, &buflen)); + + break; + } + + case ns_t_nxt: { + int n, c; + + /* Next domain name. */ + T(addname(msg, msglen, &rdata, origin, &buf, &buflen)); + + /* Type bit map. */ + n = edata - rdata; + for (c = 0; c < n*8; c++) + if (NS_NXT_BIT_ISSET(c, rdata)) { + len = SPRINTF((tmp, " %s", p_type(c))); + T(addstr(tmp, len, &buf, &buflen)); + } + break; + } + + default: + comment = "unknown RR type"; + goto hexify; + } + return (buf - obuf); + formerr: + comment = "RR format error"; + hexify: { + int n, m; + char *p; + + len = SPRINTF((tmp, "\\#(\t\t; %s", comment)); + T(addstr(tmp, len, &buf, &buflen)); + while (rdata < edata) { + p = tmp; + p += SPRINTF((p, "\n\t")); + spaced = 0; + n = MIN(16, edata - rdata); + for (m = 0; m < n; m++) + p += SPRINTF((p, "%02x ", rdata[m])); + T(addstr(tmp, p - tmp, &buf, &buflen)); + if (n < 16) { + T(addstr(")", 1, &buf, &buflen)); + T(addtab(p - tmp + 1, 48, spaced, &buf, &buflen)); + } + p = tmp; + p += SPRINTF((p, "; ")); + for (m = 0; m < n; m++) + *p++ = (isascii(rdata[m]) && isprint(rdata[m])) + ? rdata[m] + : '.'; + T(addstr(tmp, p - tmp, &buf, &buflen)); + rdata += n; + } + return (buf - obuf); + } +} + +/* Private. */ + +/* + * size_t + * prune_origin(name, origin) + * Find out if the name is at or under the current origin. + * return: + * Number of characters in name before start of origin, + * or length of name if origin does not match. + * notes: + * This function should share code with samedomain(). + */ +static size_t +prune_origin(const char *name, const char *origin) { + const char *oname = name; + + while (*name != '\0') { + if (origin != NULL && strcasecmp(name, origin) == 0) + return (name - oname - (name > oname)); + while (*name != '\0') { + if (*name == '\\') { + name++; + /* XXX need to handle \nnn form. */ + if (*name == '\0') + break; + } else if (*name == '.') { + name++; + break; + } + name++; + } + } + return (name - oname); +} + +/* + * int + * charstr(rdata, edata, buf, buflen) + * Format a <character-string> into the presentation buffer. + * return: + * Number of rdata octets consumed + * 0 for protocol format error + * -1 for output buffer error + * side effects: + * buffer is advanced on success. + */ +static int +charstr(const u_char *rdata, const u_char *edata, char **buf, size_t *buflen) { + const u_char *odata = rdata; + size_t save_buflen = *buflen; + char *save_buf = *buf; + + if (addstr("\"", 1, buf, buflen) < 0) + goto enospc; + if (rdata < edata) { + int n = *rdata; + + if (rdata + 1 + n <= edata) { + rdata++; + while (n-- > 0) { + if (strchr("\n\"\\", *rdata) != NULL) + if (addstr("\\", 1, buf, buflen) < 0) + goto enospc; + if (addstr((const char *)rdata, 1, + buf, buflen) < 0) + goto enospc; + rdata++; + } + } + } + if (addstr("\"", 1, buf, buflen) < 0) + goto enospc; + return (rdata - odata); + enospc: + errno = ENOSPC; + *buf = save_buf; + *buflen = save_buflen; + return (-1); +} + +static int +addname(const u_char *msg, size_t msglen, + const u_char **pp, const char *origin, + char **buf, size_t *buflen) +{ + size_t newlen, save_buflen = *buflen; + char *save_buf = *buf; + int n; + + n = dn_expand(msg, msg + msglen, *pp, *buf, *buflen); + if (n < 0) + goto enospc; /* Guess. */ + newlen = prune_origin(*buf, origin); + if ((origin == NULL || origin[0] == '\0' || (*buf)[newlen] == '\0') && + (newlen == 0 || (*buf)[newlen - 1] != '.')) { + /* No trailing dot. */ + if (newlen + 2 > *buflen) + goto enospc; /* No room for ".\0". */ + (*buf)[newlen++] = '.'; + (*buf)[newlen] = '\0'; + } + if (newlen == 0) { + /* Use "@" instead of name. */ + if (newlen + 2 > *buflen) + goto enospc; /* No room for "@\0". */ + (*buf)[newlen++] = '@'; + (*buf)[newlen] = '\0'; + } + *pp += n; + addlen(newlen, buf, buflen); + **buf = '\0'; + return (newlen); + enospc: + errno = ENOSPC; + *buf = save_buf; + *buflen = save_buflen; + return (-1); +} + +static void +addlen(size_t len, char **buf, size_t *buflen) { + assert(len <= *buflen); + *buf += len; + *buflen -= len; +} + +static int +addstr(const char *src, size_t len, char **buf, size_t *buflen) { + if (len > *buflen) { + errno = ENOSPC; + return (-1); + } + memcpy(*buf, src, len); + addlen(len, buf, buflen); + **buf = '\0'; + return (0); +} + +static int +addtab(size_t len, size_t target, int spaced, char **buf, size_t *buflen) { + size_t save_buflen = *buflen; + char *save_buf = *buf; + int t; + + if (spaced || len >= target - 1) { + T(addstr(" ", 2, buf, buflen)); + spaced = 1; + } else { + for (t = (target - len - 1) / 8; t >= 0; t--) + if (addstr("\t", 1, buf, buflen) < 0) { + *buflen = save_buflen; + *buf = save_buf; + return (-1); + } + spaced = 0; + } + return (spaced); +} diff --git a/newlib/libc/sys/linux/net/ns_ttl.c b/newlib/libc/sys/linux/net/ns_ttl.c new file mode 100644 index 000000000..63dbefb59 --- /dev/null +++ b/newlib/libc/sys/linux/net/ns_ttl.c @@ -0,0 +1,150 @@ +/* + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> + +/* Import. */ + +#include <arpa/nameser.h> + +#include <ctype.h> +#include <errno.h> +#include <stdio.h> +#include <string.h> + +#define SPRINTF(x) ((size_t)sprintf x) + +/* Forward. */ + +static int fmt1(int t, char s, char **buf, size_t *buflen); + +/* Macros. */ + +#define T(x) if ((x) < 0) return (-1); else (void)NULL + +/* Public. */ + +int +ns_format_ttl(u_long src, char *dst, size_t dstlen) { + char *odst = dst; + int secs, mins, hours, days, weeks, x; + char *p; + + secs = src % 60; src /= 60; + mins = src % 60; src /= 60; + hours = src % 24; src /= 24; + days = src % 7; src /= 7; + weeks = src; src = 0; + + x = 0; + if (weeks) { + T(fmt1(weeks, 'W', &dst, &dstlen)); + x++; + } + if (days) { + T(fmt1(days, 'D', &dst, &dstlen)); + x++; + } + if (hours) { + T(fmt1(hours, 'H', &dst, &dstlen)); + x++; + } + if (mins) { + T(fmt1(mins, 'M', &dst, &dstlen)); + x++; + } + if (secs || !(weeks || days || hours || mins)) { + T(fmt1(secs, 'S', &dst, &dstlen)); + x++; + } + + if (x > 1) { + int ch; + + for (p = odst; (ch = *p) != '\0'; p++) + if (isascii(ch) && isupper(ch)) + *p = tolower(ch); + } + + return (dst - odst); +} + +int +ns_parse_ttl(const char *src, u_long *dst) { + u_long ttl, tmp; + int ch, digits, dirty; + + ttl = 0; + tmp = 0; + digits = 0; + dirty = 0; + while ((ch = *src++) != '\0') { + if (!isascii(ch) || !isprint(ch)) + goto einval; + if (isdigit(ch)) { + tmp *= 10; + tmp += (ch - '0'); + digits++; + continue; + } + if (digits == 0) + goto einval; + if (islower(ch)) + ch = toupper(ch); + switch (ch) { + case 'W': tmp *= 7; + case 'D': tmp *= 24; + case 'H': tmp *= 60; + case 'M': tmp *= 60; + case 'S': break; + default: goto einval; + } + ttl += tmp; + tmp = 0; + digits = 0; + dirty = 1; + } + if (digits > 0) { + if (dirty) + goto einval; + else + ttl += tmp; + } + *dst = ttl; + return (0); + + einval: + errno = EINVAL; + return (-1); +} + +/* Private. */ + +static int +fmt1(int t, char s, char **buf, size_t *buflen) { + char tmp[50]; + size_t len; + + len = SPRINTF((tmp, "%d%c", t, s)); + if (len + 1 > *buflen) + return (-1); + strcpy(*buf, tmp); + *buf += len; + *buflen -= len; + return (0); +} diff --git a/newlib/libc/sys/linux/net/nsap_addr.c b/newlib/libc/sys/linux/net/nsap_addr.c new file mode 100644 index 000000000..b6651488b --- /dev/null +++ b/newlib/libc/sys/linux/net/nsap_addr.c @@ -0,0 +1,113 @@ +/* + * Copyright (c) 1996, 1998 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <sys/param.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> +#include <ctype.h> +#include <resolv.h> + +static char +xtob(c) + int c; +{ + return (c - (((c >= '0') && (c <= '9')) ? '0' : '7')); +} + +u_int +inet_nsap_addr(ascii, binary, maxlen) + const char *ascii; + u_char *binary; + int maxlen; +{ + u_char c, nib; + u_int len = 0; + + while ((c = *ascii++) != '\0' && len < (u_int)maxlen) { + if (c == '.' || c == '+' || c == '/') + continue; + if (!isascii(c)) + return (0); + if (islower(c)) + c = toupper(c); + if (isxdigit(c)) { + nib = xtob(c); + c = *ascii++; + if (c != '\0') { + c = toupper(c); + if (isxdigit(c)) { + *binary++ = (nib << 4) | xtob(c); + len++; + } else + return (0); + } + else + return (0); + } + else + return (0); + } + return (len); +} + +char * +inet_nsap_ntoa(binlen, binary, ascii) + int binlen; + const u_char *binary; + char *ascii; +{ + int nib; + int i; + static char tmpbuf[255*3]; + char *start; + + if (ascii) + start = ascii; + else { + ascii = tmpbuf; + start = tmpbuf; + } + + if (binlen > 255) + binlen = 255; + + for (i = 0; i < binlen; i++) { + nib = *binary >> 4; + *ascii++ = nib + (nib < 10 ? '0' : '7'); + nib = *binary++ & 0x0f; + *ascii++ = nib + (nib < 10 ? '0' : '7'); + if (((i % 2) == 0 && (i + 1) < binlen)) + *ascii++ = '.'; + } + *ascii = '\0'; + return (start); +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <arpa/inet.h>. + */ +#undef inet_nsap_addr +__weak_reference(__inet_nsap_addr, inet_nsap_addr); +#undef inet_nsap_ntoa +__weak_reference(__inet_nsap_ntoa, inet_nsap_ntoa); diff --git a/newlib/libc/sys/linux/net/nsdispatch.3 b/newlib/libc/sys/linux/net/nsdispatch.3 new file mode 100644 index 000000000..708f97cba --- /dev/null +++ b/newlib/libc/sys/linux/net/nsdispatch.3 @@ -0,0 +1,231 @@ +.\" $NetBSD: nsdispatch.3,v 1.8 1999/03/22 19:44:53 garbled Exp $ +.\" $FreeBSD: src/lib/libc/net/nsdispatch.3,v 1.5 2001/10/01 16:08:56 ru Exp $ +.\" +.\" Copyright (c) 1997, 1998, 1999 The NetBSD Foundation, Inc. +.\" All rights reserved. +.\" +.\" This code is derived from software contributed to The NetBSD Foundation +.\" by Luke Mewburn. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the NetBSD +.\" Foundation, Inc. and its contributors. +.\" 4. Neither the name of The NetBSD Foundation nor the names of its +.\" contributors may be used to endorse or promote products derived +.\" from this software without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS +.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS +.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.Dd January 19, 1999 +.Dt NSDISPATCH 3 +.Os +.Sh NAME +.Nm nsdispatch +.Nd name-service switch dispatcher routine +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In nsswitch.h +.Ft int +.Fo nsdispatch +.Fa "void *retval" +.Fa "const ns_dtab dtab[]" +.Fa "const char *database" +.Fa "const char *method" +.Fa "const ns_src defaults[]" +.Fa "..." +.Fc +.Sh DESCRIPTION +The +.Fn nsdispatch +function invokes the callback functions specified in +.Va dtab +in the order given in +.Pa /etc/nsswitch.conf +for the database +.Va database +until a successful entry is found. +.Pp +.Va retval +is passed to each callback function to modify as necessary +(to pass back to the caller of +.Fn nsdispatch ) +.Pp +.Va dtab +is an array of +.Va ns_dtab +structures, which have the following format: +.Bd -literal -offset indent +typedef struct { + const char *src; + int (*cb)(void *retval, void *cb_data, va_list ap); + void *cb_data; +} ns_dtab; +.Ed +.Pp +.Bd -ragged -offset indent +For each source type that is implemented, an entry with +.Va src +set to the name of the source, +.Va cb +defined as a function which handles that source, and +.Va cb_data +is used to pass arbritrary data to the callback function. +The last entry in +.Va dtab +should contain +.Dv NULL +values for +.Va src , +.Va cb , +and +.Va cb_data . +.Ed +.Pp +.Va method +is usually the name of the function calling +.Fn nsdispatch . +When dynamic loading is supported, a symbol constructed from +.Va database , +the current source, and +.Va method +will be used as the name to invoke the dynamically loaded function. +.Pp +.Va defaults +contains a list of default sources to try in the case of +a missing or corrupt +.Xr nsswitch.conf 5 , +or if there isn't a relevant entry for +.Va database . +It is an array of +.Va ns_src +structures, which have the following format: +.Bd -literal -offset indent +typedef struct { + const char *src; + u_int32_t flags; +} ns_src; +.Ed +.Pp +.Bd -ragged -offset indent +For each default source type, an entry with +.Va src +set to the name of the source, and +.Va flags +set to the relevant flags +(usually +.Dv NS_SUCCESS ; +refer to +.Sx Callback return values +for more information). +The last entry in +.Va defaults +should have +.Va src +set to +.Dv NULL +and +.Va flags +set to 0. +.Pp +For convenience, a global variable defined as: +.Dl extern const ns_src __nsdefaultsrc[]; +exists which contains a single default entry for +.Sq files +for use by callers which don't require complicated default rules. +.Ed +.Pp +.Sq Va ... +are optional extra arguments, which +are passed to the appropriate callback function as a variable argument +list of the type +.Va va_list . +.Ss Valid source types +Whilst there is support for arbitrary sources, the following +#defines for commonly implementated sources are available: +.Bl -column NS_COMPAT COMPAT -offset indent +.It Sy "#define value" +.It "NSSRC_FILES ""files""" +.It "NSSRC_DNS ""dns""" +.It "NSSRC_NIS ""nis""" +.It "NSSRC_COMPAT ""compat""" +.El +.Pp +Refer to +.Xr nsswitch.conf 5 +for a complete description of what each source type is. +.Pp +.Ss Callback return values +The callback functions should return one of the following values +depending upon status of the lookup: +.Bl -column NS_NOTFOUND -offset indent +.It Sy "Return value Status code" +.It "NS_SUCCESS success" +.It "NS_NOTFOUND notfound" +.It "NS_UNAVAIL unavail" +.It "NS_TRYAGAIN tryagain" +.El +.Pp +Refer to +.Xr nsswitch.conf 5 +for a complete description of what each status code is. +.Pp +.Nm +returns the value of the callback that caused the dispatcher to finish, +or NS_NOTFOUND otherwise. +.Sh SEE ALSO +.Xr hesiod 3 , +.Xr stdarg 3 , +.Xr ypclnt 3 , +.Xr nsswitch.conf 5 +.Sh HISTORY +The +.Nm +routines first appeared in +.Fx 4.1 . +They were imported from the +.Nx +Project, +where they appeared first in +.Nx 1.4 . +.Sh AUTHORS +Luke Mewburn +.Aq lukem@netbsd.org +wrote this freely distributable name-service switch implementation, +using ideas from the +.Tn ULTRIX +.Xr svc.conf 5 +and +.Tn Solaris +.Xr nsswitch.conf 4 +manual pages. +.Sh BUGS +The +.Nm +routines are not thread safe. +This will be rectified in the future. +.Pp +Currently there is no support for dynamically loadable dispatcher callback +functions. +It is anticipated that this will be added in the future in the back-end +without requiring changes to code that invokes +.Fn nsdispatch . diff --git a/newlib/libc/sys/linux/net/nsdispatch.c b/newlib/libc/sys/linux/net/nsdispatch.c new file mode 100644 index 000000000..ea5fc6d4b --- /dev/null +++ b/newlib/libc/sys/linux/net/nsdispatch.c @@ -0,0 +1,266 @@ +/* $NetBSD: nsdispatch.c,v 1.9 1999/01/25 00:16:17 lukem Exp $ */ + +/*- + * Copyright (c) 1997, 1998, 1999 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Luke Mewburn. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <sys/param.h> +#include <sys/stat.h> + +#include <fcntl.h> +#define _NS_PRIVATE +#include <nsswitch.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +/* + * default sourcelist: `files' + */ +const ns_src __nsdefaultsrc[] = { + { NSSRC_FILES, NS_SUCCESS }, + { 0 }, +}; + + +static int _nsmapsize = 0; +static ns_dbt *_nsmap = NULL; + +/* + * size of dynamic array chunk for _nsmap and _nsmap[x].srclist + */ +#define NSELEMSPERCHUNK 8 + + +int _nscmp(const void *, const void *); + + +int +_nscmp(a, b) + const void *a; + const void *b; +{ + return (strcasecmp(((const ns_dbt *)a)->name, + ((const ns_dbt *)b)->name)); +} + + +void +_nsdbtaddsrc(dbt, src) + ns_dbt *dbt; + const ns_src *src; +{ + if ((dbt->srclistsize % NSELEMSPERCHUNK) == 0) { + dbt->srclist = (ns_src *)realloc(dbt->srclist, + (dbt->srclistsize + NSELEMSPERCHUNK) * sizeof(ns_src)); + if (dbt->srclist == NULL) + printf("nsdispatch: memory allocation failure\n"); + } + memmove(&dbt->srclist[dbt->srclistsize++], src, sizeof(ns_src)); +} + + +void +_nsdbtdump(dbt) + const ns_dbt *dbt; +{ + int i; + + printf("%s (%d source%s):", dbt->name, dbt->srclistsize, + dbt->srclistsize == 1 ? "" : "s"); + for (i = 0; i < dbt->srclistsize; i++) { + printf(" %s", dbt->srclist[i].name); + if (!(dbt->srclist[i].flags & + (NS_UNAVAIL|NS_NOTFOUND|NS_TRYAGAIN)) && + (dbt->srclist[i].flags & NS_SUCCESS)) + continue; + printf(" ["); + if (!(dbt->srclist[i].flags & NS_SUCCESS)) + printf(" SUCCESS=continue"); + if (dbt->srclist[i].flags & NS_UNAVAIL) + printf(" UNAVAIL=return"); + if (dbt->srclist[i].flags & NS_NOTFOUND) + printf(" NOTFOUND=return"); + if (dbt->srclist[i].flags & NS_TRYAGAIN) + printf(" TRYAGAIN=return"); + printf(" ]"); + } + printf("\n"); +} + + +const ns_dbt * +_nsdbtget(name) + const char *name; +{ + static time_t confmod; + + struct stat statbuf; + ns_dbt dbt; + + extern FILE *_nsyyin; + extern int _nsyyparse(void); + + dbt.name = name; + + if (confmod) { + if (stat(_PATH_NS_CONF, &statbuf) == -1) + return (NULL); + if (confmod < statbuf.st_mtime) { + int i, j; + + for (i = 0; i < _nsmapsize; i++) { + for (j = 0; j < _nsmap[i].srclistsize; j++) { + if (_nsmap[i].srclist[j].name != NULL) { + /*LINTED const cast*/ + free((void *) + _nsmap[i].srclist[j].name); + } + } + if (_nsmap[i].srclist) + free(_nsmap[i].srclist); + if (_nsmap[i].name) { + /*LINTED const cast*/ + free((void *)_nsmap[i].name); + } + } + if (_nsmap) + free(_nsmap); + _nsmap = NULL; + _nsmapsize = 0; + confmod = 0; + } + } + if (!confmod) { + if (stat(_PATH_NS_CONF, &statbuf) == -1) + return (NULL); + _nsyyin = fopen(_PATH_NS_CONF, "r"); + if (_nsyyin == NULL) + return (NULL); + _nsyyparse(); + (void)fclose(_nsyyin); + qsort(_nsmap, (size_t)_nsmapsize, sizeof(ns_dbt), _nscmp); + confmod = statbuf.st_mtime; + } + return (bsearch(&dbt, _nsmap, (size_t)_nsmapsize, sizeof(ns_dbt), + _nscmp)); +} + + +void +_nsdbtput(dbt) + const ns_dbt *dbt; +{ + int i; + + for (i = 0; i < _nsmapsize; i++) { + if (_nscmp(dbt, &_nsmap[i]) == 0) { + /* overwrite existing entry */ + if (_nsmap[i].srclist != NULL) + free(_nsmap[i].srclist); + memmove(&_nsmap[i], dbt, sizeof(ns_dbt)); + return; + } + } + + if ((_nsmapsize % NSELEMSPERCHUNK) == 0) { + _nsmap = (ns_dbt *)realloc(_nsmap, + (_nsmapsize + NSELEMSPERCHUNK) * sizeof(ns_dbt)); + if (_nsmap == NULL) + printf("nsdispatch: memory allocation failure\n"); + } + memmove(&_nsmap[_nsmapsize++], dbt, sizeof(ns_dbt)); +} + + +int +#if __STDC__ +nsdispatch(void *retval, const ns_dtab disp_tab[], const char *database, + const char *method, const ns_src defaults[], ...) +#else +nsdispatch(retval, disp_tab, database, method, defaults, va_alist) + void *retval; + const ns_dtab disp_tab[]; + const char *database; + const char *method; + const ns_src defaults[]; + va_dcl +#endif +{ + va_list ap; + int i, curdisp, result; + const ns_dbt *dbt; + const ns_src *srclist; + int srclistsize; + + dbt = _nsdbtget(database); + if (dbt != NULL) { + srclist = dbt->srclist; + srclistsize = dbt->srclistsize; + } else { + srclist = defaults; + srclistsize = 0; + while (srclist[srclistsize].name != NULL) + srclistsize++; + } + result = 0; + + for (i = 0; i < srclistsize; i++) { + for (curdisp = 0; disp_tab[curdisp].src != NULL; curdisp++) + if (strcasecmp(disp_tab[curdisp].src, + srclist[i].name) == 0) + break; + result = 0; + if (disp_tab[curdisp].callback) { +#if __STDC__ + va_start(ap, defaults); +#else + va_start(ap); +#endif + result = disp_tab[curdisp].callback(retval, + disp_tab[curdisp].cb_data, ap); + va_end(ap); + if (result & srclist[i].flags) { + break; + } + } + } + return (result ? result : NS_NOTFOUND); +} diff --git a/newlib/libc/sys/linux/net/nslexer.c b/newlib/libc/sys/linux/net/nslexer.c new file mode 100644 index 000000000..3f6ba4dcd --- /dev/null +++ b/newlib/libc/sys/linux/net/nslexer.c @@ -0,0 +1,1712 @@ +#define yy_create_buffer _nsyy_create_buffer +#define yy_delete_buffer _nsyy_delete_buffer +#define yy_scan_buffer _nsyy_scan_buffer +#define yy_scan_string _nsyy_scan_string +#define yy_scan_bytes _nsyy_scan_bytes +#define yy_flex_debug _nsyy_flex_debug +#define yy_init_buffer _nsyy_init_buffer +#define yy_flush_buffer _nsyy_flush_buffer +#define yy_load_buffer_state _nsyy_load_buffer_state +#define yy_switch_to_buffer _nsyy_switch_to_buffer +#define yyin _nsyyin +#define yyleng _nsyyleng +#define yylex _nsyylex +#define yyout _nsyyout +#define yyrestart _nsyyrestart +#define yytext _nsyytext +#define yylineno _nsyylineno +#define yywrap _nsyywrap + +/* A lexical scanner generated by flex */ + +/* Scanner skeleton version: + * $Header$ + */ + +#define FLEX_SCANNER +#define YY_FLEX_MAJOR_VERSION 2 +#define YY_FLEX_MINOR_VERSION 5 + +#include <stdio.h> +#include <unistd.h> + + +/* cfront 1.2 defines "c_plusplus" instead of "__cplusplus" */ +#ifdef c_plusplus +#ifndef __cplusplus +#define __cplusplus +#endif +#endif + + +#ifdef __cplusplus + +#include <stdlib.h> + +/* Use prototypes in function declarations. */ +#define YY_USE_PROTOS + +/* The "const" storage-class-modifier is valid. */ +#define YY_USE_CONST + +#else /* ! __cplusplus */ + +#if __STDC__ + +#define YY_USE_PROTOS +#define YY_USE_CONST + +#endif /* __STDC__ */ +#endif /* ! __cplusplus */ + +#ifdef __TURBOC__ + #pragma warn -rch + #pragma warn -use +#include <io.h> +#include <stdlib.h> +#define YY_USE_CONST +#define YY_USE_PROTOS +#endif + +#ifdef YY_USE_CONST +#define yyconst const +#else +#define yyconst +#endif + + +#ifdef YY_USE_PROTOS +#define YY_PROTO(proto) proto +#else +#define YY_PROTO(proto) () +#endif + +/* Returned upon end-of-file. */ +#define YY_NULL 0 + +/* Promotes a possibly negative, possibly signed char to an unsigned + * integer for use as an array index. If the signed char is negative, + * we want to instead treat it as an 8-bit unsigned char, hence the + * double cast. + */ +#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c) + +/* Enter a start condition. This macro really ought to take a parameter, + * but we do it the disgusting crufty way forced on us by the ()-less + * definition of BEGIN. + */ +#define BEGIN yy_start = 1 + 2 * + +/* Translate the current start state into a value that can be later handed + * to BEGIN to return to the state. The YYSTATE alias is for lex + * compatibility. + */ +#define YY_START ((yy_start - 1) / 2) +#define YYSTATE YY_START + +/* Action number for EOF rule of a given start state. */ +#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1) + +/* Special action meaning "start processing a new file". */ +#define YY_NEW_FILE yyrestart( yyin ) + +#define YY_END_OF_BUFFER_CHAR 0 + +/* Size of default input buffer. */ +#define YY_BUF_SIZE 1024 + +typedef struct yy_buffer_state *YY_BUFFER_STATE; + +extern int yyleng; +extern FILE *yyin, *yyout; + +#define EOB_ACT_CONTINUE_SCAN 0 +#define EOB_ACT_END_OF_FILE 1 +#define EOB_ACT_LAST_MATCH 2 + +/* The funky do-while in the following #define is used to turn the definition + * int a single C statement (which needs a semi-colon terminator). This + * avoids problems with code like: + * + * if ( condition_holds ) + * yyless( 5 ); + * else + * do_something_else(); + * + * Prior to using the do-while the compiler would get upset at the + * "else" because it interpreted the "if" statement as being all + * done when it reached the ';' after the yyless() call. + */ + +/* Return all but the first 'n' matched characters back to the input stream. */ + +#define yyless(n) \ + do \ + { \ + /* Undo effects of setting up yytext. */ \ + *yy_cp = yy_hold_char; \ + YY_RESTORE_YY_MORE_OFFSET \ + yy_c_buf_p = yy_cp = yy_bp + n - YY_MORE_ADJ; \ + YY_DO_BEFORE_ACTION; /* set up yytext again */ \ + } \ + while ( 0 ) + +#define unput(c) yyunput( c, yytext_ptr ) + +/* The following is because we cannot portably get our hands on size_t + * (without autoconf's help, which isn't available because we want + * flex-generated scanners to compile on their own). + */ +typedef unsigned int yy_size_t; + + +struct yy_buffer_state + { + FILE *yy_input_file; + + char *yy_ch_buf; /* input buffer */ + char *yy_buf_pos; /* current position in input buffer */ + + /* Size of input buffer in bytes, not including room for EOB + * characters. + */ + yy_size_t yy_buf_size; + + /* Number of characters read into yy_ch_buf, not including EOB + * characters. + */ + int yy_n_chars; + + /* Whether we "own" the buffer - i.e., we know we created it, + * and can realloc() it to grow it, and should free() it to + * delete it. + */ + int yy_is_our_buffer; + + /* Whether this is an "interactive" input source; if so, and + * if we're using stdio for input, then we want to use getc() + * instead of fread(), to make sure we stop fetching input after + * each newline. + */ + int yy_is_interactive; + + /* Whether we're considered to be at the beginning of a line. + * If so, '^' rules will be active on the next match, otherwise + * not. + */ + int yy_at_bol; + + /* Whether to try to fill the input buffer when we reach the + * end of it. + */ + int yy_fill_buffer; + + int yy_buffer_status; +#define YY_BUFFER_NEW 0 +#define YY_BUFFER_NORMAL 1 + /* When an EOF's been seen but there's still some text to process + * then we mark the buffer as YY_EOF_PENDING, to indicate that we + * shouldn't try reading from the input source any more. We might + * still have a bunch of tokens to match, though, because of + * possible backing-up. + * + * When we actually see the EOF, we change the status to "new" + * (via yyrestart()), so that the user can continue scanning by + * just pointing yyin at a new input file. + */ +#define YY_BUFFER_EOF_PENDING 2 + }; + +static YY_BUFFER_STATE yy_current_buffer = 0; + +/* We provide macros for accessing buffer states in case in the + * future we want to put the buffer states in a more general + * "scanner state". + */ +#define YY_CURRENT_BUFFER yy_current_buffer + + +/* yy_hold_char holds the character lost when yytext is formed. */ +static char yy_hold_char; + +static int yy_n_chars; /* number of characters read into yy_ch_buf */ + + +int yyleng; + +/* Points to current character in buffer. */ +static char *yy_c_buf_p = (char *) 0; +static int yy_init = 1; /* whether we need to initialize */ +static int yy_start = 0; /* start state number */ + +/* Flag which is used to allow yywrap()'s to do buffer switches + * instead of setting up a fresh yyin. A bit of a hack ... + */ +static int yy_did_buffer_switch_on_eof; + +void yyrestart YY_PROTO(( FILE *input_file )); + +void yy_switch_to_buffer YY_PROTO(( YY_BUFFER_STATE new_buffer )); +void yy_load_buffer_state YY_PROTO(( void )); +YY_BUFFER_STATE yy_create_buffer YY_PROTO(( FILE *file, int size )); +void yy_delete_buffer YY_PROTO(( YY_BUFFER_STATE b )); +void yy_init_buffer YY_PROTO(( YY_BUFFER_STATE b, FILE *file )); +void yy_flush_buffer YY_PROTO(( YY_BUFFER_STATE b )); +#define YY_FLUSH_BUFFER yy_flush_buffer( yy_current_buffer ) + +YY_BUFFER_STATE yy_scan_buffer YY_PROTO(( char *base, yy_size_t size )); +YY_BUFFER_STATE yy_scan_string YY_PROTO(( yyconst char *yy_str )); +YY_BUFFER_STATE yy_scan_bytes YY_PROTO(( yyconst char *bytes, int len )); + +static void *yy_flex_alloc YY_PROTO(( yy_size_t )); +static void *yy_flex_realloc YY_PROTO(( void *, yy_size_t )); +static void yy_flex_free YY_PROTO(( void * )); + +#define yy_new_buffer yy_create_buffer + +#define yy_set_interactive(is_interactive) \ + { \ + if ( ! yy_current_buffer ) \ + yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \ + yy_current_buffer->yy_is_interactive = is_interactive; \ + } + +#define yy_set_bol(at_bol) \ + { \ + if ( ! yy_current_buffer ) \ + yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \ + yy_current_buffer->yy_at_bol = at_bol; \ + } + +#define YY_AT_BOL() (yy_current_buffer->yy_at_bol) + + +#define YY_USES_REJECT +typedef unsigned char YY_CHAR; +FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0; +typedef int yy_state_type; +extern int yylineno; +int yylineno = 1; +extern char *yytext; +#define yytext_ptr yytext + +static yy_state_type yy_get_previous_state YY_PROTO(( void )); +static yy_state_type yy_try_NUL_trans YY_PROTO(( yy_state_type current_state )); +static int yy_get_next_buffer YY_PROTO(( void )); +static void yy_fatal_error YY_PROTO(( yyconst char msg[] )); + +/* Done after the current pattern has been matched and before the + * corresponding action - sets up yytext. + */ +#define YY_DO_BEFORE_ACTION \ + yytext_ptr = yy_bp; \ + yyleng = (int) (yy_cp - yy_bp); \ + yy_hold_char = *yy_cp; \ + *yy_cp = '\0'; \ + yy_c_buf_p = yy_cp; + +#define YY_NUM_RULES 13 +#define YY_END_OF_BUFFER 14 +static yyconst short int yy_acclist[83] = + { 0, + 14, 12, 13, 1, 12, 13, 4, 13, 2, 12, + 13, 11, 12, 13, 11, 12, 13, 11, 12, 13, + 11, 12, 13, 11, 12, 13, 11, 12, 13, 11, + 12, 13, 12, 13, 1, 2, 11, 11, 11, 11, + 11, 11, 11, 3, 11, 11, 11, 11, 11, 11, + 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, + 11, 11, 11, 11, 9, 11, 11, 11, 11, 11, + 11, 5, 11, 11, 6, 11, 10, 11, 7, 11, + 8, 11 + } ; + +static yyconst short int yy_accept[60] = + { 0, + 1, 1, 1, 2, 4, 7, 9, 12, 15, 18, + 21, 24, 27, 30, 33, 35, 36, 37, 38, 39, + 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, + 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, + 60, 61, 62, 63, 64, 65, 67, 68, 69, 70, + 71, 72, 74, 75, 77, 79, 81, 83, 83 + } ; + +static yyconst int yy_ec[256] = + { 0, + 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 2, 1, 1, 4, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, + 1, 1, 1, 1, 6, 7, 8, 9, 10, 11, + 12, 7, 13, 7, 7, 14, 7, 15, 16, 7, + 7, 17, 18, 19, 20, 21, 7, 7, 22, 7, + 1, 23, 1, 1, 5, 1, 6, 7, 8, 9, + + 10, 11, 12, 7, 13, 7, 7, 14, 7, 15, + 16, 7, 7, 17, 18, 19, 20, 21, 7, 7, + 22, 7, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1 + } ; + +static yyconst int yy_meta[24] = + { 0, + 1, 1, 2, 1, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 1 + } ; + +static yyconst short int yy_base[61] = + { 0, + 0, 0, 68, 69, 65, 69, 0, 0, 50, 49, + 54, 43, 45, 46, 57, 57, 0, 0, 43, 38, + 37, 47, 32, 47, 69, 33, 40, 30, 41, 42, + 26, 33, 29, 27, 33, 30, 35, 25, 19, 23, + 19, 30, 22, 14, 18, 0, 14, 18, 16, 19, + 19, 0, 12, 0, 0, 0, 0, 69, 23, 22 + } ; + +static yyconst short int yy_def[61] = + { 0, + 58, 1, 58, 58, 58, 58, 59, 60, 60, 60, + 60, 60, 60, 60, 58, 58, 59, 60, 60, 60, + 60, 60, 60, 60, 58, 60, 60, 60, 60, 60, + 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, + 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, + 60, 60, 60, 60, 60, 60, 60, 0, 58, 58 + } ; + +static yyconst short int yy_nxt[93] = + { 0, + 4, 5, 6, 7, 4, 8, 8, 9, 8, 8, + 8, 8, 8, 8, 10, 8, 11, 12, 13, 14, + 8, 8, 15, 17, 18, 17, 57, 56, 55, 54, + 53, 52, 51, 50, 49, 48, 47, 46, 45, 44, + 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, + 33, 32, 31, 30, 29, 28, 27, 26, 16, 25, + 24, 23, 22, 21, 20, 19, 16, 58, 3, 58, + 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, + 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, + 58, 58 + + } ; + +static yyconst short int yy_chk[93] = + { 0, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 59, 60, 59, 53, 51, 50, 49, + 48, 47, 45, 44, 43, 42, 41, 40, 39, 38, + 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, + 27, 26, 24, 23, 22, 21, 20, 19, 16, 15, + 14, 13, 12, 11, 10, 9, 5, 3, 58, 58, + 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, + 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, + 58, 58 + + } ; + +static yy_state_type yy_state_buf[YY_BUF_SIZE + 2], *yy_state_ptr; +static char *yy_full_match; +static int yy_lp; +#define REJECT \ +{ \ +*yy_cp = yy_hold_char; /* undo effects of setting up yytext */ \ +yy_cp = yy_full_match; /* restore poss. backed-over text */ \ +++yy_lp; \ +goto find_rule; \ +} +#define yymore() yymore_used_but_not_detected +#define YY_MORE_ADJ 0 +#define YY_RESTORE_YY_MORE_OFFSET +char *yytext; +#line 1 "nslexer.l" +#define INITIAL 0 +#line 2 "nslexer.l" +/* $NetBSD: nslexer.l,v 1.3 1999/01/25 00:16:17 lukem Exp $ */ + +/*- + * Copyright (c) 1997, 1998, 1999 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Luke Mewburn. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <stdio.h> +#include <sys/cdefs.h> +#if defined(LIBC_SCCS) && !defined(lint) +static char *rcsid = + "$FreeBSD: src/lib/libc/net/nslexer.l,v 1.3 2001/11/11 02:48:09 bde Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include <ctype.h> +#define _NS_PRIVATE +#include <nsswitch.h> +#include <string.h> + +#include "nsparser.h" + +#define YY_NO_UNPUT + + +/* Macros after this point can all be overridden by user definitions in + * section 1. + */ + +#ifndef YY_SKIP_YYWRAP +#ifdef __cplusplus +extern "C" int yywrap YY_PROTO(( void )); +#else +extern int yywrap YY_PROTO(( void )); +#endif +#endif + +#ifndef YY_NO_UNPUT +static void yyunput YY_PROTO(( int c, char *buf_ptr )); +#endif + +#ifndef yytext_ptr +static void yy_flex_strncpy YY_PROTO(( char *, yyconst char *, int )); +#endif + +#ifdef YY_NEED_STRLEN +static int yy_flex_strlen YY_PROTO(( yyconst char * )); +#endif + +#ifndef YY_NO_INPUT +#ifdef __cplusplus +static int yyinput YY_PROTO(( void )); +#else +static int input YY_PROTO(( void )); +#endif +#endif + +#if YY_STACK_USED +static int yy_start_stack_ptr = 0; +static int yy_start_stack_depth = 0; +static int *yy_start_stack = 0; +#ifndef YY_NO_PUSH_STATE +static void yy_push_state YY_PROTO(( int new_state )); +#endif +#ifndef YY_NO_POP_STATE +static void yy_pop_state YY_PROTO(( void )); +#endif +#ifndef YY_NO_TOP_STATE +static int yy_top_state YY_PROTO(( void )); +#endif + +#else +#define YY_NO_PUSH_STATE 1 +#define YY_NO_POP_STATE 1 +#define YY_NO_TOP_STATE 1 +#endif + +#ifdef YY_MALLOC_DECL +YY_MALLOC_DECL +#else +#if __STDC__ +#ifndef __cplusplus +#include <stdlib.h> +#endif +#else +/* Just try to get by without declaring the routines. This will fail + * miserably on non-ANSI systems for which sizeof(size_t) != sizeof(int) + * or sizeof(void*) != sizeof(int). + */ +#endif +#endif + +/* Amount of stuff to slurp up with each read. */ +#ifndef YY_READ_BUF_SIZE +#define YY_READ_BUF_SIZE 8192 +#endif + +/* Copy whatever the last rule matched to the standard output. */ + +#ifndef ECHO +/* This used to be an fputs(), but since the string might contain NUL's, + * we now use fwrite(). + */ +#define ECHO (void) fwrite( yytext, yyleng, 1, yyout ) +#endif + +/* Gets input and stuffs it into "buf". number of characters read, or YY_NULL, + * is returned in "result". + */ +#ifndef YY_INPUT +#define YY_INPUT(buf,result,max_size) \ + if ( yy_current_buffer->yy_is_interactive ) \ + { \ + int c = '*', n; \ + for ( n = 0; n < max_size && \ + (c = getc( yyin )) != EOF && c != '\n'; ++n ) \ + buf[n] = (char) c; \ + if ( c == '\n' ) \ + buf[n++] = (char) c; \ + if ( c == EOF && ferror( yyin ) ) \ + YY_FATAL_ERROR( "input in flex scanner failed" ); \ + result = n; \ + } \ + else if ( ((result = fread( buf, 1, max_size, yyin )) == 0) \ + && ferror( yyin ) ) \ + YY_FATAL_ERROR( "input in flex scanner failed" ); +#endif + +/* No semi-colon after return; correct usage is to write "yyterminate();" - + * we don't want an extra ';' after the "return" because that will cause + * some compilers to complain about unreachable statements. + */ +#ifndef yyterminate +#define yyterminate() return YY_NULL +#endif + +/* Number of entries by which start-condition stack grows. */ +#ifndef YY_START_STACK_INCR +#define YY_START_STACK_INCR 25 +#endif + +/* Report a fatal error. */ +#ifndef YY_FATAL_ERROR +#define YY_FATAL_ERROR(msg) yy_fatal_error( msg ) +#endif + +/* Default declaration of generated scanner - a define so the user can + * easily add parameters. + */ +#ifndef YY_DECL +#define YY_DECL int yylex YY_PROTO(( void )) +#endif + +/* Code executed at the beginning of each rule, after yytext and yyleng + * have been set up. + */ +#ifndef YY_USER_ACTION +#define YY_USER_ACTION +#endif + +/* Code executed at the end of each rule. */ +#ifndef YY_BREAK +#define YY_BREAK break; +#endif + +#define YY_RULE_SETUP \ + YY_USER_ACTION + +YY_DECL + { + register yy_state_type yy_current_state; + register char *yy_cp = NULL, *yy_bp = NULL; + register int yy_act; + +#line 65 "nslexer.l" + + + + if ( yy_init ) + { + yy_init = 0; + +#ifdef YY_USER_INIT + YY_USER_INIT; +#endif + + if ( ! yy_start ) + yy_start = 1; /* first start state */ + + if ( ! yyin ) + yyin = stdin; + + if ( ! yyout ) + yyout = stdout; + + if ( ! yy_current_buffer ) + yy_current_buffer = + yy_create_buffer( yyin, YY_BUF_SIZE ); + + yy_load_buffer_state(); + } + + while ( 1 ) /* loops until end-of-file is reached */ + { + yy_cp = yy_c_buf_p; + + /* Support of yytext. */ + *yy_cp = yy_hold_char; + + /* yy_bp points to the position in yy_ch_buf of the start of + * the current run. + */ + yy_bp = yy_cp; + + yy_current_state = yy_start; + yy_state_ptr = yy_state_buf; + *yy_state_ptr++ = yy_current_state; +yy_match: + do + { + register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)]; + while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) + { + yy_current_state = (int) yy_def[yy_current_state]; + if ( yy_current_state >= 59 ) + yy_c = yy_meta[(unsigned int) yy_c]; + } + yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; + *yy_state_ptr++ = yy_current_state; + ++yy_cp; + } + while ( yy_base[yy_current_state] != 69 ); + +yy_find_action: + yy_current_state = *--yy_state_ptr; + yy_lp = yy_accept[yy_current_state]; +find_rule: /* we branch to this label when backing up */ + for ( ; ; ) /* until we find what rule we matched */ + { + if ( yy_lp && yy_lp < yy_accept[yy_current_state + 1] ) + { + yy_act = yy_acclist[yy_lp]; + { + yy_full_match = yy_cp; + break; + } + } + --yy_cp; + yy_current_state = *--yy_state_ptr; + yy_lp = yy_accept[yy_current_state]; + } + + YY_DO_BEFORE_ACTION; + + if ( yy_act != YY_END_OF_BUFFER ) + { + int yyl; + for ( yyl = 0; yyl < yyleng; ++yyl ) + if ( yytext[yyl] == '\n' ) + ++yylineno; + } + +do_action: /* This label is used only to access EOF actions. */ + + + switch ( yy_act ) + { /* beginning of action switch */ +case 1: +YY_RULE_SETUP +#line 67 "nslexer.l" +; /* skip whitespace */ + YY_BREAK +case 2: +YY_RULE_SETUP +#line 69 "nslexer.l" +; /* skip comments */ + YY_BREAK +case 3: +YY_RULE_SETUP +#line 71 "nslexer.l" +; /* allow continuation */ + YY_BREAK +case 4: +YY_RULE_SETUP +#line 73 "nslexer.l" +return NL; + YY_BREAK +case 5: +YY_RULE_SETUP +#line 75 "nslexer.l" +return SUCCESS; + YY_BREAK +case 6: +YY_RULE_SETUP +#line 76 "nslexer.l" +return UNAVAIL; + YY_BREAK +case 7: +YY_RULE_SETUP +#line 77 "nslexer.l" +return NOTFOUND; + YY_BREAK +case 8: +YY_RULE_SETUP +#line 78 "nslexer.l" +return TRYAGAIN; + YY_BREAK +case 9: +YY_RULE_SETUP +#line 80 "nslexer.l" +return RETURN; + YY_BREAK +case 10: +YY_RULE_SETUP +#line 81 "nslexer.l" +return CONTINUE; + YY_BREAK +case 11: +YY_RULE_SETUP +#line 83 "nslexer.l" +{ + char *p; + int i; + size_t len; + + len = strlen (yytext) + 1; + if ((p = malloc (len)) == NULL) + printf("nsdispatch: memory allocation failure\n"); + else + memcpy (p, yytext, len); + + for (i = 0; i < strlen(p); i++) { + if (isupper((unsigned char)p[i])) + p[i] = tolower((unsigned char)p[i]); + } + _nsyylval.str = p; + return STRING; + } + YY_BREAK +case 12: +YY_RULE_SETUP +#line 99 "nslexer.l" +return yytext[0]; + YY_BREAK +case 13: +YY_RULE_SETUP +#line 101 "nslexer.l" +ECHO; + YY_BREAK + case YY_STATE_EOF(INITIAL): + yyterminate(); + + case YY_END_OF_BUFFER: + { + /* Amount of text matched not including the EOB char. */ + int yy_amount_of_matched_text = (int) (yy_cp - yytext_ptr) - 1; + + /* Undo the effects of YY_DO_BEFORE_ACTION. */ + *yy_cp = yy_hold_char; + YY_RESTORE_YY_MORE_OFFSET + + if ( yy_current_buffer->yy_buffer_status == YY_BUFFER_NEW ) + { + /* We're scanning a new file or input source. It's + * possible that this happened because the user + * just pointed yyin at a new source and called + * yylex(). If so, then we have to assure + * consistency between yy_current_buffer and our + * globals. Here is the right place to do so, because + * this is the first action (other than possibly a + * back-up) that will match for the new input source. + */ + yy_n_chars = yy_current_buffer->yy_n_chars; + yy_current_buffer->yy_input_file = yyin; + yy_current_buffer->yy_buffer_status = YY_BUFFER_NORMAL; + } + + /* Note that here we test for yy_c_buf_p "<=" to the position + * of the first EOB in the buffer, since yy_c_buf_p will + * already have been incremented past the NUL character + * (since all states make transitions on EOB to the + * end-of-buffer state). Contrast this with the test + * in input(). + */ + if ( yy_c_buf_p <= &yy_current_buffer->yy_ch_buf[yy_n_chars] ) + { /* This was really a NUL. */ + yy_state_type yy_next_state; + + yy_c_buf_p = yytext_ptr + yy_amount_of_matched_text; + + yy_current_state = yy_get_previous_state(); + + /* Okay, we're now positioned to make the NUL + * transition. We couldn't have + * yy_get_previous_state() go ahead and do it + * for us because it doesn't know how to deal + * with the possibility of jamming (and we don't + * want to build jamming into it because then it + * will run more slowly). + */ + + yy_next_state = yy_try_NUL_trans( yy_current_state ); + + yy_bp = yytext_ptr + YY_MORE_ADJ; + + if ( yy_next_state ) + { + /* Consume the NUL. */ + yy_cp = ++yy_c_buf_p; + yy_current_state = yy_next_state; + goto yy_match; + } + + else + { + yy_cp = yy_c_buf_p; + goto yy_find_action; + } + } + + else switch ( yy_get_next_buffer() ) + { + case EOB_ACT_END_OF_FILE: + { + yy_did_buffer_switch_on_eof = 0; + + if ( yywrap() ) + { + /* Note: because we've taken care in + * yy_get_next_buffer() to have set up + * yytext, we can now set up + * yy_c_buf_p so that if some total + * hoser (like flex itself) wants to + * call the scanner after we return the + * YY_NULL, it'll still work - another + * YY_NULL will get returned. + */ + yy_c_buf_p = yytext_ptr + YY_MORE_ADJ; + + yy_act = YY_STATE_EOF(YY_START); + goto do_action; + } + + else + { + if ( ! yy_did_buffer_switch_on_eof ) + YY_NEW_FILE; + } + break; + } + + case EOB_ACT_CONTINUE_SCAN: + yy_c_buf_p = + yytext_ptr + yy_amount_of_matched_text; + + yy_current_state = yy_get_previous_state(); + + yy_cp = yy_c_buf_p; + yy_bp = yytext_ptr + YY_MORE_ADJ; + goto yy_match; + + case EOB_ACT_LAST_MATCH: + yy_c_buf_p = + &yy_current_buffer->yy_ch_buf[yy_n_chars]; + + yy_current_state = yy_get_previous_state(); + + yy_cp = yy_c_buf_p; + yy_bp = yytext_ptr + YY_MORE_ADJ; + goto yy_find_action; + } + break; + } + + default: + YY_FATAL_ERROR( + "fatal flex scanner internal error--no action found" ); + } /* end of action switch */ + } /* end of scanning one token */ + } /* end of yylex */ + + +/* yy_get_next_buffer - try to read in a new buffer + * + * Returns a code representing an action: + * EOB_ACT_LAST_MATCH - + * EOB_ACT_CONTINUE_SCAN - continue scanning from current position + * EOB_ACT_END_OF_FILE - end of file + */ + +static int yy_get_next_buffer() + { + register char *dest = yy_current_buffer->yy_ch_buf; + register char *source = yytext_ptr; + register int number_to_move, i; + int ret_val; + + if ( yy_c_buf_p > &yy_current_buffer->yy_ch_buf[yy_n_chars + 1] ) + YY_FATAL_ERROR( + "fatal flex scanner internal error--end of buffer missed" ); + + if ( yy_current_buffer->yy_fill_buffer == 0 ) + { /* Don't try to fill the buffer, so this is an EOF. */ + if ( yy_c_buf_p - yytext_ptr - YY_MORE_ADJ == 1 ) + { + /* We matched a single character, the EOB, so + * treat this as a final EOF. + */ + return EOB_ACT_END_OF_FILE; + } + + else + { + /* We matched some text prior to the EOB, first + * process it. + */ + return EOB_ACT_LAST_MATCH; + } + } + + /* Try to read more data. */ + + /* First move last chars to start of buffer. */ + number_to_move = (int) (yy_c_buf_p - yytext_ptr) - 1; + + for ( i = 0; i < number_to_move; ++i ) + *(dest++) = *(source++); + + if ( yy_current_buffer->yy_buffer_status == YY_BUFFER_EOF_PENDING ) + /* don't do the read, it's not guaranteed to return an EOF, + * just force an EOF + */ + yy_current_buffer->yy_n_chars = yy_n_chars = 0; + + else + { + int num_to_read = + yy_current_buffer->yy_buf_size - number_to_move - 1; + + while ( num_to_read <= 0 ) + { /* Not enough room in the buffer - grow it. */ +#ifdef YY_USES_REJECT + YY_FATAL_ERROR( +"input buffer overflow, can't enlarge buffer because scanner uses REJECT" ); +#else + + /* just a shorter name for the current buffer */ + YY_BUFFER_STATE b = yy_current_buffer; + + int yy_c_buf_p_offset = + (int) (yy_c_buf_p - b->yy_ch_buf); + + if ( b->yy_is_our_buffer ) + { + int new_size = b->yy_buf_size * 2; + + if ( new_size <= 0 ) + b->yy_buf_size += b->yy_buf_size / 8; + else + b->yy_buf_size *= 2; + + b->yy_ch_buf = (char *) + /* Include room in for 2 EOB chars. */ + yy_flex_realloc( (void *) b->yy_ch_buf, + b->yy_buf_size + 2 ); + } + else + /* Can't grow it, we don't own it. */ + b->yy_ch_buf = 0; + + if ( ! b->yy_ch_buf ) + YY_FATAL_ERROR( + "fatal error - scanner input buffer overflow" ); + + yy_c_buf_p = &b->yy_ch_buf[yy_c_buf_p_offset]; + + num_to_read = yy_current_buffer->yy_buf_size - + number_to_move - 1; +#endif + } + + if ( num_to_read > YY_READ_BUF_SIZE ) + num_to_read = YY_READ_BUF_SIZE; + + /* Read in more data. */ + YY_INPUT( (&yy_current_buffer->yy_ch_buf[number_to_move]), + yy_n_chars, num_to_read ); + + yy_current_buffer->yy_n_chars = yy_n_chars; + } + + if ( yy_n_chars == 0 ) + { + if ( number_to_move == YY_MORE_ADJ ) + { + ret_val = EOB_ACT_END_OF_FILE; + yyrestart( yyin ); + } + + else + { + ret_val = EOB_ACT_LAST_MATCH; + yy_current_buffer->yy_buffer_status = + YY_BUFFER_EOF_PENDING; + } + } + + else + ret_val = EOB_ACT_CONTINUE_SCAN; + + yy_n_chars += number_to_move; + yy_current_buffer->yy_ch_buf[yy_n_chars] = YY_END_OF_BUFFER_CHAR; + yy_current_buffer->yy_ch_buf[yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR; + + yytext_ptr = &yy_current_buffer->yy_ch_buf[0]; + + return ret_val; + } + + +/* yy_get_previous_state - get the state just before the EOB char was reached */ + +static yy_state_type yy_get_previous_state() + { + register yy_state_type yy_current_state; + register char *yy_cp; + + yy_current_state = yy_start; + yy_state_ptr = yy_state_buf; + *yy_state_ptr++ = yy_current_state; + + for ( yy_cp = yytext_ptr + YY_MORE_ADJ; yy_cp < yy_c_buf_p; ++yy_cp ) + { + register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1); + while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) + { + yy_current_state = (int) yy_def[yy_current_state]; + if ( yy_current_state >= 59 ) + yy_c = yy_meta[(unsigned int) yy_c]; + } + yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; + *yy_state_ptr++ = yy_current_state; + } + + return yy_current_state; + } + + +/* yy_try_NUL_trans - try to make a transition on the NUL character + * + * synopsis + * next_state = yy_try_NUL_trans( current_state ); + */ + +#ifdef YY_USE_PROTOS +static yy_state_type yy_try_NUL_trans( yy_state_type yy_current_state ) +#else +static yy_state_type yy_try_NUL_trans( yy_current_state ) +yy_state_type yy_current_state; +#endif + { + register int yy_is_jam; + + register YY_CHAR yy_c = 1; + while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) + { + yy_current_state = (int) yy_def[yy_current_state]; + if ( yy_current_state >= 59 ) + yy_c = yy_meta[(unsigned int) yy_c]; + } + yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; + yy_is_jam = (yy_current_state == 58); + if ( ! yy_is_jam ) + *yy_state_ptr++ = yy_current_state; + + return yy_is_jam ? 0 : yy_current_state; + } + + +#ifndef YY_NO_UNPUT +#ifdef YY_USE_PROTOS +static void yyunput( int c, register char *yy_bp ) +#else +static void yyunput( c, yy_bp ) +int c; +register char *yy_bp; +#endif + { + register char *yy_cp = yy_c_buf_p; + + /* undo effects of setting up yytext */ + *yy_cp = yy_hold_char; + + if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 ) + { /* need to shift things up to make room */ + /* +2 for EOB chars. */ + register int number_to_move = yy_n_chars + 2; + register char *dest = &yy_current_buffer->yy_ch_buf[ + yy_current_buffer->yy_buf_size + 2]; + register char *source = + &yy_current_buffer->yy_ch_buf[number_to_move]; + + while ( source > yy_current_buffer->yy_ch_buf ) + *--dest = *--source; + + yy_cp += (int) (dest - source); + yy_bp += (int) (dest - source); + yy_current_buffer->yy_n_chars = + yy_n_chars = yy_current_buffer->yy_buf_size; + + if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 ) + YY_FATAL_ERROR( "flex scanner push-back overflow" ); + } + + *--yy_cp = (char) c; + + if ( c == '\n' ) + --yylineno; + + yytext_ptr = yy_bp; + yy_hold_char = *yy_cp; + yy_c_buf_p = yy_cp; + } +#endif /* ifndef YY_NO_UNPUT */ + + +#ifdef __cplusplus +static int yyinput() +#else +static int input() +#endif + { + int c; + + *yy_c_buf_p = yy_hold_char; + + if ( *yy_c_buf_p == YY_END_OF_BUFFER_CHAR ) + { + /* yy_c_buf_p now points to the character we want to return. + * If this occurs *before* the EOB characters, then it's a + * valid NUL; if not, then we've hit the end of the buffer. + */ + if ( yy_c_buf_p < &yy_current_buffer->yy_ch_buf[yy_n_chars] ) + /* This was really a NUL. */ + *yy_c_buf_p = '\0'; + + else + { /* need more input */ + int offset = yy_c_buf_p - yytext_ptr; + ++yy_c_buf_p; + + switch ( yy_get_next_buffer() ) + { + case EOB_ACT_LAST_MATCH: + /* This happens because yy_g_n_b() + * sees that we've accumulated a + * token and flags that we need to + * try matching the token before + * proceeding. But for input(), + * there's no matching to consider. + * So convert the EOB_ACT_LAST_MATCH + * to EOB_ACT_END_OF_FILE. + */ + + /* Reset buffer status. */ + yyrestart( yyin ); + + /* fall through */ + + case EOB_ACT_END_OF_FILE: + { + if ( yywrap() ) + return EOF; + + if ( ! yy_did_buffer_switch_on_eof ) + YY_NEW_FILE; +#ifdef __cplusplus + return yyinput(); +#else + return input(); +#endif + } + + case EOB_ACT_CONTINUE_SCAN: + yy_c_buf_p = yytext_ptr + offset; + break; + } + } + } + + c = *(unsigned char *) yy_c_buf_p; /* cast for 8-bit char's */ + *yy_c_buf_p = '\0'; /* preserve yytext */ + yy_hold_char = *++yy_c_buf_p; + + if ( c == '\n' ) + ++yylineno; + + return c; + } + + +#ifdef YY_USE_PROTOS +void yyrestart( FILE *input_file ) +#else +void yyrestart( input_file ) +FILE *input_file; +#endif + { + if ( ! yy_current_buffer ) + yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); + + yy_init_buffer( yy_current_buffer, input_file ); + yy_load_buffer_state(); + } + + +#ifdef YY_USE_PROTOS +void yy_switch_to_buffer( YY_BUFFER_STATE new_buffer ) +#else +void yy_switch_to_buffer( new_buffer ) +YY_BUFFER_STATE new_buffer; +#endif + { + if ( yy_current_buffer == new_buffer ) + return; + + if ( yy_current_buffer ) + { + /* Flush out information for old buffer. */ + *yy_c_buf_p = yy_hold_char; + yy_current_buffer->yy_buf_pos = yy_c_buf_p; + yy_current_buffer->yy_n_chars = yy_n_chars; + } + + yy_current_buffer = new_buffer; + yy_load_buffer_state(); + + /* We don't actually know whether we did this switch during + * EOF (yywrap()) processing, but the only time this flag + * is looked at is after yywrap() is called, so it's safe + * to go ahead and always set it. + */ + yy_did_buffer_switch_on_eof = 1; + } + + +#ifdef YY_USE_PROTOS +void yy_load_buffer_state( void ) +#else +void yy_load_buffer_state() +#endif + { + yy_n_chars = yy_current_buffer->yy_n_chars; + yytext_ptr = yy_c_buf_p = yy_current_buffer->yy_buf_pos; + yyin = yy_current_buffer->yy_input_file; + yy_hold_char = *yy_c_buf_p; + } + + +#ifdef YY_USE_PROTOS +YY_BUFFER_STATE yy_create_buffer( FILE *file, int size ) +#else +YY_BUFFER_STATE yy_create_buffer( file, size ) +FILE *file; +int size; +#endif + { + YY_BUFFER_STATE b; + + b = (YY_BUFFER_STATE) yy_flex_alloc( sizeof( struct yy_buffer_state ) ); + if ( ! b ) + YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); + + b->yy_buf_size = size; + + /* yy_ch_buf has to be 2 characters longer than the size given because + * we need to put in 2 end-of-buffer characters. + */ + b->yy_ch_buf = (char *) yy_flex_alloc( b->yy_buf_size + 2 ); + if ( ! b->yy_ch_buf ) + YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); + + b->yy_is_our_buffer = 1; + + yy_init_buffer( b, file ); + + return b; + } + + +#ifdef YY_USE_PROTOS +void yy_delete_buffer( YY_BUFFER_STATE b ) +#else +void yy_delete_buffer( b ) +YY_BUFFER_STATE b; +#endif + { + if ( ! b ) + return; + + if ( b == yy_current_buffer ) + yy_current_buffer = (YY_BUFFER_STATE) 0; + + if ( b->yy_is_our_buffer ) + yy_flex_free( (void *) b->yy_ch_buf ); + + yy_flex_free( (void *) b ); + } + + + +#ifdef YY_USE_PROTOS +void yy_init_buffer( YY_BUFFER_STATE b, FILE *file ) +#else +void yy_init_buffer( b, file ) +YY_BUFFER_STATE b; +FILE *file; +#endif + + + { + yy_flush_buffer( b ); + + b->yy_input_file = file; + b->yy_fill_buffer = 1; + +#if YY_ALWAYS_INTERACTIVE + b->yy_is_interactive = 1; +#else +#if YY_NEVER_INTERACTIVE + b->yy_is_interactive = 0; +#else + b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0; +#endif +#endif + } + + +#ifdef YY_USE_PROTOS +void yy_flush_buffer( YY_BUFFER_STATE b ) +#else +void yy_flush_buffer( b ) +YY_BUFFER_STATE b; +#endif + + { + if ( ! b ) + return; + + b->yy_n_chars = 0; + + /* We always need two end-of-buffer characters. The first causes + * a transition to the end-of-buffer state. The second causes + * a jam in that state. + */ + b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR; + b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR; + + b->yy_buf_pos = &b->yy_ch_buf[0]; + + b->yy_at_bol = 1; + b->yy_buffer_status = YY_BUFFER_NEW; + + if ( b == yy_current_buffer ) + yy_load_buffer_state(); + } + + +#ifndef YY_NO_SCAN_BUFFER +#ifdef YY_USE_PROTOS +YY_BUFFER_STATE yy_scan_buffer( char *base, yy_size_t size ) +#else +YY_BUFFER_STATE yy_scan_buffer( base, size ) +char *base; +yy_size_t size; +#endif + { + YY_BUFFER_STATE b; + + if ( size < 2 || + base[size-2] != YY_END_OF_BUFFER_CHAR || + base[size-1] != YY_END_OF_BUFFER_CHAR ) + /* They forgot to leave room for the EOB's. */ + return 0; + + b = (YY_BUFFER_STATE) yy_flex_alloc( sizeof( struct yy_buffer_state ) ); + if ( ! b ) + YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" ); + + b->yy_buf_size = size - 2; /* "- 2" to take care of EOB's */ + b->yy_buf_pos = b->yy_ch_buf = base; + b->yy_is_our_buffer = 0; + b->yy_input_file = 0; + b->yy_n_chars = b->yy_buf_size; + b->yy_is_interactive = 0; + b->yy_at_bol = 1; + b->yy_fill_buffer = 0; + b->yy_buffer_status = YY_BUFFER_NEW; + + yy_switch_to_buffer( b ); + + return b; + } +#endif + + +#ifndef YY_NO_SCAN_STRING +#ifdef YY_USE_PROTOS +YY_BUFFER_STATE yy_scan_string( yyconst char *yy_str ) +#else +YY_BUFFER_STATE yy_scan_string( yy_str ) +yyconst char *yy_str; +#endif + { + int len; + for ( len = 0; yy_str[len]; ++len ) + ; + + return yy_scan_bytes( yy_str, len ); + } +#endif + + +#ifndef YY_NO_SCAN_BYTES +#ifdef YY_USE_PROTOS +YY_BUFFER_STATE yy_scan_bytes( yyconst char *bytes, int len ) +#else +YY_BUFFER_STATE yy_scan_bytes( bytes, len ) +yyconst char *bytes; +int len; +#endif + { + YY_BUFFER_STATE b; + char *buf; + yy_size_t n; + int i; + + /* Get memory for full buffer, including space for trailing EOB's. */ + n = len + 2; + buf = (char *) yy_flex_alloc( n ); + if ( ! buf ) + YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" ); + + for ( i = 0; i < len; ++i ) + buf[i] = bytes[i]; + + buf[len] = buf[len+1] = YY_END_OF_BUFFER_CHAR; + + b = yy_scan_buffer( buf, n ); + if ( ! b ) + YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" ); + + /* It's okay to grow etc. this buffer, and we should throw it + * away when we're done. + */ + b->yy_is_our_buffer = 1; + + return b; + } +#endif + + +#ifndef YY_NO_PUSH_STATE +#ifdef YY_USE_PROTOS +static void yy_push_state( int new_state ) +#else +static void yy_push_state( new_state ) +int new_state; +#endif + { + if ( yy_start_stack_ptr >= yy_start_stack_depth ) + { + yy_size_t new_size; + + yy_start_stack_depth += YY_START_STACK_INCR; + new_size = yy_start_stack_depth * sizeof( int ); + + if ( ! yy_start_stack ) + yy_start_stack = (int *) yy_flex_alloc( new_size ); + + else + yy_start_stack = (int *) yy_flex_realloc( + (void *) yy_start_stack, new_size ); + + if ( ! yy_start_stack ) + YY_FATAL_ERROR( + "out of memory expanding start-condition stack" ); + } + + yy_start_stack[yy_start_stack_ptr++] = YY_START; + + BEGIN(new_state); + } +#endif + + +#ifndef YY_NO_POP_STATE +static void yy_pop_state() + { + if ( --yy_start_stack_ptr < 0 ) + YY_FATAL_ERROR( "start-condition stack underflow" ); + + BEGIN(yy_start_stack[yy_start_stack_ptr]); + } +#endif + + +#ifndef YY_NO_TOP_STATE +static int yy_top_state() + { + return yy_start_stack[yy_start_stack_ptr - 1]; + } +#endif + +#ifndef YY_EXIT_FAILURE +#define YY_EXIT_FAILURE 2 +#endif + +#ifdef YY_USE_PROTOS +static void yy_fatal_error( yyconst char msg[] ) +#else +static void yy_fatal_error( msg ) +char msg[]; +#endif + { + (void) fprintf( stderr, "%s\n", msg ); + exit( YY_EXIT_FAILURE ); + } + + + +/* Redefine yyless() so it works in section 3 code. */ + +#undef yyless +#define yyless(n) \ + do \ + { \ + /* Undo effects of setting up yytext. */ \ + yytext[yyleng] = yy_hold_char; \ + yy_c_buf_p = yytext + n; \ + yy_hold_char = *yy_c_buf_p; \ + *yy_c_buf_p = '\0'; \ + yyleng = n; \ + } \ + while ( 0 ) + + +/* Internal utility routines. */ + +#ifndef yytext_ptr +#ifdef YY_USE_PROTOS +static void yy_flex_strncpy( char *s1, yyconst char *s2, int n ) +#else +static void yy_flex_strncpy( s1, s2, n ) +char *s1; +yyconst char *s2; +int n; +#endif + { + register int i; + for ( i = 0; i < n; ++i ) + s1[i] = s2[i]; + } +#endif + +#ifdef YY_NEED_STRLEN +#ifdef YY_USE_PROTOS +static int yy_flex_strlen( yyconst char *s ) +#else +static int yy_flex_strlen( s ) +yyconst char *s; +#endif + { + register int n; + for ( n = 0; s[n]; ++n ) + ; + + return n; + } +#endif + + +#ifdef YY_USE_PROTOS +static void *yy_flex_alloc( yy_size_t size ) +#else +static void *yy_flex_alloc( size ) +yy_size_t size; +#endif + { + return (void *) malloc( size ); + } + +#ifdef YY_USE_PROTOS +static void *yy_flex_realloc( void *ptr, yy_size_t size ) +#else +static void *yy_flex_realloc( ptr, size ) +void *ptr; +yy_size_t size; +#endif + { + /* The cast to (char *) in the following accommodates both + * implementations that use char* generic pointers, and those + * that use void* generic pointers. It works with the latter + * because both ANSI C and C++ allow castless assignment from + * any pointer type to void*, and deal with argument conversions + * as though doing an assignment. + */ + return (void *) realloc( (char *) ptr, size ); + } + +#ifdef YY_USE_PROTOS +static void yy_flex_free( void *ptr ) +#else +static void yy_flex_free( ptr ) +void *ptr; +#endif + { + free( ptr ); + } + +#if YY_MAIN +int main() + { + yylex(); + return 0; + } +#endif +#line 101 "nslexer.l" + + +#undef _nsyywrap +int +_nsyywrap() +{ + return 1; +} /* _nsyywrap */ + +void +_nsyyerror(msg) + const char *msg; +{ + + printf("Error in nslexer\n"); +} /* _nsyyerror */ diff --git a/newlib/libc/sys/linux/net/nslexer.l b/newlib/libc/sys/linux/net/nslexer.l new file mode 100644 index 000000000..0b66b6c66 --- /dev/null +++ b/newlib/libc/sys/linux/net/nslexer.l @@ -0,0 +1,114 @@ +%{ +/* $NetBSD: nslexer.l,v 1.3 1999/01/25 00:16:17 lukem Exp $ */ + +/*- + * Copyright (c) 1997, 1998, 1999 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Luke Mewburn. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <stdio.h> +#include <sys/cdefs.h> +#if defined(LIBC_SCCS) && !defined(lint) +static char *rcsid = + "$FreeBSD: src/lib/libc/net/nslexer.l,v 1.3 2001/11/11 02:48:09 bde Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include <ctype.h> +#define _NS_PRIVATE +#include <nsswitch.h> +#include <string.h> + +#include "nsparser.h" + +#define YY_NO_UNPUT + +%} + +%option yylineno + +BLANK [ \t] +CR \n +STRING [a-zA-Z][a-zA-Z0-9_]* + +%% + +{BLANK}+ ; /* skip whitespace */ + +#.* ; /* skip comments */ + +\\{CR} ; /* allow continuation */ + +{CR} return NL; + +[sS][uU][cC][cC][eE][sS][sS] return SUCCESS; +[uU][nN][aA][vV][aA][iI][lL] return UNAVAIL; +[nN][oO][tT][fF][oO][uU][nN][dD] return NOTFOUND; +[tT][rR][yY][aA][gG][aA][iI][nN] return TRYAGAIN; + +[rR][eE][tT][uU][rR][nN] return RETURN; +[cC][oO][nN][tT][iI][nN][uU][eE] return CONTINUE; + +{STRING} { + char *p; + int i; + + if ((p = strdup(yytext)) == NULL) + printf("nsdispatch: memory allocation failure\n"); + + for (i = 0; i < strlen(p); i++) { + if (isupper((unsigned char)p[i])) + p[i] = tolower((unsigned char)p[i]); + } + _nsyylval.str = p; + return STRING; + } + +. return yytext[0]; + +%% + +#undef _nsyywrap +int +_nsyywrap() +{ + return 1; +} /* _nsyywrap */ + +void +_nsyyerror(msg) + const char *msg; +{ + + printf("Error in nslexer\n"); +} /* _nsyyerror */ diff --git a/newlib/libc/sys/linux/net/nsparser.c b/newlib/libc/sys/linux/net/nsparser.c new file mode 100644 index 000000000..b4701aed1 --- /dev/null +++ b/newlib/libc/sys/linux/net/nsparser.c @@ -0,0 +1,541 @@ +#ifndef lint +static char yysccsid[] = "@(#)yaccpar 1.9 (Berkeley) 02/21/93"; +#endif +#define YYBYACC 1 +#define YYMAJOR 1 +#define YYMINOR 9 +#define yyclearin (yychar=(-1)) +#define yyerrok (yyerrflag=0) +#define YYRECOVERING (yyerrflag!=0) +#define yyparse _nsyyparse +#define yylex _nsyylex +#define yyerror _nsyyerror +#define yychar _nsyychar +#define yyval _nsyyval +#define yylval _nsyylval +#define yydebug _nsyydebug +#define yynerrs _nsyynerrs +#define yyerrflag _nsyyerrflag +#define yyss _nsyyss +#define yyssp _nsyyssp +#define yyvs _nsyyvs +#define yyvsp _nsyyvsp +#define yylhs _nsyylhs +#define yylen _nsyylen +#define yydefred _nsyydefred +#define yydgoto _nsyydgoto +#define yysindex _nsyysindex +#define yyrindex _nsyyrindex +#define yygindex _nsyygindex +#define yytable _nsyytable +#define yycheck _nsyycheck +#define yyname _nsyyname +#define yyrule _nsyyrule +#define YYPREFIX "_nsyy" +#line 2 "nsparser.y" +/* $NetBSD: nsparser.y,v 1.3 1999/01/25 00:16:18 lukem Exp $ */ + +/*- + * Copyright (c) 1997, 1998, 1999 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Luke Mewburn. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#if defined(LIBC_SCCS) && !defined(lint) +static char *rcsid = + "$FreeBSD: src/lib/libc/net/nsparser.y,v 1.3 2002/03/21 22:47:17 obrien Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#define _NS_PRIVATE +#include <nsswitch.h> +#include <stdio.h> +#include <string.h> + + +static void _nsaddsrctomap(const char *); + +static ns_dbt curdbt; +static ns_src cursrc; +#line 59 "nsparser.y" +typedef union { + char *str; + int mapval; +} YYSTYPE; +#line 97 "y.tab.c" +#define NL 257 +#define SUCCESS 258 +#define UNAVAIL 259 +#define NOTFOUND 260 +#define TRYAGAIN 261 +#define RETURN 262 +#define CONTINUE 263 +#define STRING 264 +#define YYERRCODE 256 +short _nsyylhs[] = { -1, + 0, 0, 3, 3, 4, 4, 4, 4, 5, 6, + 6, 7, 9, 7, 8, 8, 10, 1, 1, 1, + 1, 2, 2, +}; +short _nsyylen[] = { 2, + 0, 1, 1, 2, 1, 3, 4, 2, 1, 1, + 2, 1, 0, 5, 1, 2, 3, 1, 1, 1, + 1, 1, 1, +}; +short _nsyydefred[] = { 0, + 0, 5, 9, 0, 0, 3, 0, 8, 4, 0, + 6, 0, 0, 10, 13, 7, 11, 0, 18, 19, + 20, 21, 0, 0, 15, 0, 14, 16, 22, 23, + 17, +}; +short _nsyydgoto[] = { 4, + 23, 31, 5, 6, 7, 13, 14, 24, 18, 25, +}; +short _nsyysindex[] = { -255, + -249, 0, 0, 0, -255, 0, -41, 0, 0, -254, + 0, -73, -253, 0, 0, 0, 0, -245, 0, 0, + 0, 0, -42, -93, 0, -256, 0, 0, 0, 0, + 0, +}; +short _nsyyrindex[] = { 20, + 0, 0, 0, 0, 21, 0, 0, 0, 0, 0, + 0, -252, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, +}; +short _nsyygindex[] = { 0, + 0, 0, 0, 17, 0, 0, 10, 0, 0, 1, +}; +#define YYTABLESIZE 168 +short _nsyytable[] = { 27, + 1, 2, 11, 16, 12, 29, 30, 8, 3, 12, + 12, 12, 19, 20, 21, 22, 10, 15, 26, 1, + 2, 9, 17, 0, 28, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 19, 20, 21, 22, +}; +short _nsyycheck[] = { 93, + 256, 257, 257, 257, 257, 262, 263, 257, 264, 264, + 264, 264, 258, 259, 260, 261, 58, 91, 61, 0, + 0, 5, 13, -1, 24, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, 258, 259, 260, 261, +}; +#define YYFINAL 4 +#ifndef YYDEBUG +#define YYDEBUG 0 +#endif +#define YYMAXTOKEN 264 +#if YYDEBUG +char *_nsyyname[] = { +"end-of-file",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"':'",0,0,"'='",0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"'['",0,"']'",0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"NL","SUCCESS", +"UNAVAIL","NOTFOUND","TRYAGAIN","RETURN","CONTINUE","STRING", +}; +char *_nsyyrule[] = { +"$accept : File", +"File :", +"File : Lines", +"Lines : Entry", +"Lines : Lines Entry", +"Entry : NL", +"Entry : Database ':' NL", +"Entry : Database ':' Srclist NL", +"Entry : error NL", +"Database : STRING", +"Srclist : Item", +"Srclist : Srclist Item", +"Item : STRING", +"$$1 :", +"Item : STRING '[' $$1 Criteria ']'", +"Criteria : Criterion", +"Criteria : Criteria Criterion", +"Criterion : Status '=' Action", +"Status : SUCCESS", +"Status : UNAVAIL", +"Status : NOTFOUND", +"Status : TRYAGAIN", +"Action : RETURN", +"Action : CONTINUE", +}; +#endif +#ifdef YYSTACKSIZE +#undef YYMAXDEPTH +#define YYMAXDEPTH YYSTACKSIZE +#else +#ifdef YYMAXDEPTH +#define YYSTACKSIZE YYMAXDEPTH +#else +#define YYSTACKSIZE 500 +#define YYMAXDEPTH 500 +#endif +#endif +int yydebug; +int yynerrs; +int yyerrflag; +int yychar; +short *yyssp; +YYSTYPE *yyvsp; +YYSTYPE yyval; +YYSTYPE yylval; +short yyss[YYSTACKSIZE]; +YYSTYPE yyvs[YYSTACKSIZE]; +#define yystacksize YYSTACKSIZE +#line 150 "nsparser.y" + +static void +_nsaddsrctomap(elem) + const char *elem; +{ + int i, lineno; + extern int _nsyylineno; + extern char * _nsyytext; + + lineno = _nsyylineno - (*_nsyytext == '\n' ? 1 : 0); + if (curdbt.srclistsize > 0) { + if ((strcasecmp(elem, NSSRC_COMPAT) == 0) || + (strcasecmp(curdbt.srclist[0].name, NSSRC_COMPAT) == 0)) { + /* XXX: syslog the following */ + printf("line %d 'compat' used with other sources", + lineno); + return; + } + } + for (i = 0; i < curdbt.srclistsize; i++) { + if (strcasecmp(curdbt.srclist[i].name, elem) == 0) { + /* XXX: syslog the following */ + printf("%s line %d: duplicate source '%s'", + lineno, elem); + return; + } + } + cursrc.name = elem; + _nsdbtaddsrc(&curdbt, &cursrc); +} +#line 276 "y.tab.c" +#define YYABORT goto yyabort +#define YYREJECT goto yyabort +#define YYACCEPT goto yyaccept +#define YYERROR goto yyerrlab +int +yyparse() +{ + register int yym, yyn, yystate; +#if YYDEBUG + register char *yys; + extern char *getenv(); + + if (yys = getenv("YYDEBUG")) + { + yyn = *yys; + if (yyn >= '0' && yyn <= '9') + yydebug = yyn - '0'; + } +#endif + + yynerrs = 0; + yyerrflag = 0; + yychar = (-1); + + yyssp = yyss; + yyvsp = yyvs; + *yyssp = yystate = 0; + +yyloop: + if (yyn = yydefred[yystate]) goto yyreduce; + if (yychar < 0) + { + if ((yychar = yylex()) < 0) yychar = 0; +#if YYDEBUG + if (yydebug) + { + yys = 0; + if (yychar <= YYMAXTOKEN) yys = yyname[yychar]; + if (!yys) yys = "illegal-symbol"; + printf("%sdebug: state %d, reading %d (%s)\n", + YYPREFIX, yystate, yychar, yys); + } +#endif + } + if ((yyn = yysindex[yystate]) && (yyn += yychar) >= 0 && + yyn <= YYTABLESIZE && yycheck[yyn] == yychar) + { +#if YYDEBUG + if (yydebug) + printf("%sdebug: state %d, shifting to state %d\n", + YYPREFIX, yystate, yytable[yyn]); +#endif + if (yyssp >= yyss + yystacksize - 1) + { + goto yyoverflow; + } + *++yyssp = yystate = yytable[yyn]; + *++yyvsp = yylval; + yychar = (-1); + if (yyerrflag > 0) --yyerrflag; + goto yyloop; + } + if ((yyn = yyrindex[yystate]) && (yyn += yychar) >= 0 && + yyn <= YYTABLESIZE && yycheck[yyn] == yychar) + { + yyn = yytable[yyn]; + goto yyreduce; + } + if (yyerrflag) goto yyinrecovery; +#ifdef lint + goto yynewerror; +#endif +yynewerror: + yyerror("syntax error"); +#ifdef lint + goto yyerrlab; +#endif +yyerrlab: + ++yynerrs; +yyinrecovery: + if (yyerrflag < 3) + { + yyerrflag = 3; + for (;;) + { + if ((yyn = yysindex[*yyssp]) && (yyn += YYERRCODE) >= 0 && + yyn <= YYTABLESIZE && yycheck[yyn] == YYERRCODE) + { +#if YYDEBUG + if (yydebug) + printf("%sdebug: state %d, error recovery shifting\ + to state %d\n", YYPREFIX, *yyssp, yytable[yyn]); +#endif + if (yyssp >= yyss + yystacksize - 1) + { + goto yyoverflow; + } + *++yyssp = yystate = yytable[yyn]; + *++yyvsp = yylval; + goto yyloop; + } + else + { +#if YYDEBUG + if (yydebug) + printf("%sdebug: error recovery discarding state %d\n", + YYPREFIX, *yyssp); +#endif + if (yyssp <= yyss) goto yyabort; + --yyssp; + --yyvsp; + } + } + } + else + { + if (yychar == 0) goto yyabort; +#if YYDEBUG + if (yydebug) + { + yys = 0; + if (yychar <= YYMAXTOKEN) yys = yyname[yychar]; + if (!yys) yys = "illegal-symbol"; + printf("%sdebug: state %d, error recovery discards token %d (%s)\n", + YYPREFIX, yystate, yychar, yys); + } +#endif + yychar = (-1); + goto yyloop; + } +yyreduce: +#if YYDEBUG + if (yydebug) + printf("%sdebug: state %d, reducing by rule %d (%s)\n", + YYPREFIX, yystate, yyn, yyrule[yyn]); +#endif + yym = yylen[yyn]; + yyval = yyvsp[1-yym]; + switch (yyn) + { +case 7: +#line 87 "nsparser.y" +{ + _nsdbtput(&curdbt); + } +break; +case 8: +#line 91 "nsparser.y" +{ + yyerrok; + } +break; +case 9: +#line 98 "nsparser.y" +{ + curdbt.name = yylval.str; + curdbt.srclist = NULL; + curdbt.srclistsize = 0; + } +break; +case 12: +#line 112 "nsparser.y" +{ + cursrc.flags = NS_SUCCESS; + _nsaddsrctomap(yyvsp[0].str); + } +break; +case 13: +#line 116 "nsparser.y" +{ cursrc.flags = NS_SUCCESS; } +break; +case 14: +#line 117 "nsparser.y" +{ + _nsaddsrctomap(yyvsp[-4].str); + } +break; +case 17: +#line 129 "nsparser.y" +{ + if (yyvsp[0].mapval) /* if action == RETURN set RETURN bit */ + cursrc.flags |= yyvsp[-2].mapval; + else /* else unset it */ + cursrc.flags &= ~yyvsp[-2].mapval; + } +break; +case 18: +#line 138 "nsparser.y" +{ yyval.mapval = NS_SUCCESS; } +break; +case 19: +#line 139 "nsparser.y" +{ yyval.mapval = NS_UNAVAIL; } +break; +case 20: +#line 140 "nsparser.y" +{ yyval.mapval = NS_NOTFOUND; } +break; +case 21: +#line 141 "nsparser.y" +{ yyval.mapval = NS_TRYAGAIN; } +break; +case 22: +#line 145 "nsparser.y" +{ yyval.mapval = 1L; } +break; +case 23: +#line 146 "nsparser.y" +{ yyval.mapval = 0L; } +break; +#line 487 "y.tab.c" + } + yyssp -= yym; + yystate = *yyssp; + yyvsp -= yym; + yym = yylhs[yyn]; + if (yystate == 0 && yym == 0) + { +#if YYDEBUG + if (yydebug) + printf("%sdebug: after reduction, shifting from state 0 to\ + state %d\n", YYPREFIX, YYFINAL); +#endif + yystate = YYFINAL; + *++yyssp = YYFINAL; + *++yyvsp = yyval; + if (yychar < 0) + { + if ((yychar = yylex()) < 0) yychar = 0; +#if YYDEBUG + if (yydebug) + { + yys = 0; + if (yychar <= YYMAXTOKEN) yys = yyname[yychar]; + if (!yys) yys = "illegal-symbol"; + printf("%sdebug: state %d, reading %d (%s)\n", + YYPREFIX, YYFINAL, yychar, yys); + } +#endif + } + if (yychar == 0) goto yyaccept; + goto yyloop; + } + if ((yyn = yygindex[yym]) && (yyn += yystate) >= 0 && + yyn <= YYTABLESIZE && yycheck[yyn] == yystate) + yystate = yytable[yyn]; + else + yystate = yydgoto[yym]; +#if YYDEBUG + if (yydebug) + printf("%sdebug: after reduction, shifting from state %d \ +to state %d\n", YYPREFIX, *yyssp, yystate); +#endif + if (yyssp >= yyss + yystacksize - 1) + { + goto yyoverflow; + } + *++yyssp = yystate; + *++yyvsp = yyval; + goto yyloop; +yyoverflow: + yyerror("yacc stack overflow"); +yyabort: + return (1); +yyaccept: + return (0); +} diff --git a/newlib/libc/sys/linux/net/nsparser.h b/newlib/libc/sys/linux/net/nsparser.h new file mode 100644 index 000000000..6a6fae0be --- /dev/null +++ b/newlib/libc/sys/linux/net/nsparser.h @@ -0,0 +1,13 @@ +#define NL 257 +#define SUCCESS 258 +#define UNAVAIL 259 +#define NOTFOUND 260 +#define TRYAGAIN 261 +#define RETURN 262 +#define CONTINUE 263 +#define STRING 264 +typedef union { + char *str; + int mapval; +} YYSTYPE; +extern YYSTYPE _nsyylval; diff --git a/newlib/libc/sys/linux/net/nsparser.y b/newlib/libc/sys/linux/net/nsparser.y new file mode 100644 index 000000000..42f63a8a5 --- /dev/null +++ b/newlib/libc/sys/linux/net/nsparser.y @@ -0,0 +1,178 @@ +%{ +/* $NetBSD: nsparser.y,v 1.3 1999/01/25 00:16:18 lukem Exp $ */ + +/*- + * Copyright (c) 1997, 1998, 1999 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Luke Mewburn. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#if defined(LIBC_SCCS) && !defined(lint) +static char *rcsid = + "$FreeBSD: src/lib/libc/net/nsparser.y,v 1.3 2002/03/21 22:47:17 obrien Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#define _NS_PRIVATE +#include <nsswitch.h> +#include <stdio.h> +#include <string.h> + + +static void _nsaddsrctomap(const char *); + +static ns_dbt curdbt; +static ns_src cursrc; +%} + +%union { + char *str; + int mapval; +} + +%token NL +%token SUCCESS UNAVAIL NOTFOUND TRYAGAIN +%token RETURN CONTINUE +%token <str> STRING + +%type <mapval> Status Action + +%% + +File + : /* empty */ + | Lines + ; + +Lines + : Entry + | Lines Entry + ; + +Entry + : NL + | Database ':' NL + | Database ':' Srclist NL + { + _nsdbtput(&curdbt); + } + | error NL + { + yyerrok; + } + ; + +Database + : STRING + { + curdbt.name = yylval.str; + curdbt.srclist = NULL; + curdbt.srclistsize = 0; + } + ; + +Srclist + : Item + | Srclist Item + ; + +Item + : STRING + { + cursrc.flags = NS_SUCCESS; + _nsaddsrctomap($1); + } + | STRING '[' { cursrc.flags = NS_SUCCESS; } Criteria ']' + { + _nsaddsrctomap($1); + } + ; + +Criteria + : Criterion + | Criteria Criterion + ; + +Criterion + : Status '=' Action + { + if ($3) /* if action == RETURN set RETURN bit */ + cursrc.flags |= $1; + else /* else unset it */ + cursrc.flags &= ~$1; + } + ; + +Status + : SUCCESS { $$ = NS_SUCCESS; } + | UNAVAIL { $$ = NS_UNAVAIL; } + | NOTFOUND { $$ = NS_NOTFOUND; } + | TRYAGAIN { $$ = NS_TRYAGAIN; } + ; + +Action + : RETURN { $$ = 1L; } + | CONTINUE { $$ = 0L; } + ; + +%% + +static void +_nsaddsrctomap(elem) + const char *elem; +{ + int i, lineno; + extern int _nsyylineno; + extern char * _nsyytext; + + lineno = _nsyylineno - (*_nsyytext == '\n' ? 1 : 0); + if (curdbt.srclistsize > 0) { + if ((strcasecmp(elem, NSSRC_COMPAT) == 0) || + (strcasecmp(curdbt.srclist[0].name, NSSRC_COMPAT) == 0)) { + /* XXX: syslog the following */ + printf("line %d 'compat' used with other sources", + lineno); + return; + } + } + for (i = 0; i < curdbt.srclistsize; i++) { + if (strcasecmp(curdbt.srclist[i].name, elem) == 0) { + /* XXX: syslog the following */ + printf("%s line %d: duplicate source '%s'", + lineno, elem); + return; + } + } + cursrc.name = elem; + _nsdbtaddsrc(&curdbt, &cursrc); +} diff --git a/newlib/libc/sys/linux/net/rcmd.3 b/newlib/libc/sys/linux/net/rcmd.3 new file mode 100644 index 000000000..9479a237d --- /dev/null +++ b/newlib/libc/sys/linux/net/rcmd.3 @@ -0,0 +1,298 @@ +.\" Copyright (c) 1983, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" From: @(#)rcmd.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD: src/lib/libc/net/rcmd.3,v 1.20 2001/10/01 16:08:56 ru Exp $ +.\" +.Dd March 3, 2000 +.Dt RCMD 3 +.Os +.Sh NAME +.Nm rcmd , +.Nm rresvport , +.Nm iruserok , +.Nm ruserok , +.Nm rcmd_af , +.Nm rresvport_af , +.Nm iruserok_sa +.Nd routines for returning a stream to a remote command +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In unistd.h +.Ft int +.Fn rcmd "char **ahost" "int inport" "const char *locuser" "const char *remuser" "const char *cmd" "int *fd2p" +.Ft int +.Fn rresvport "int *port" +.Ft int +.Fn iruserok "u_long raddr" "int superuser" "const char *ruser" "const char *luser" +.Ft int +.Fn ruserok "const char *rhost" "int superuser" "const char *ruser" "const char *luser" +.Ft int +.Fn rcmd_af "char **ahost" "int inport" "const char *locuser" "const char *remuser" "const char *cmd" "int *fd2p" "int af" +.Ft int +.Fn rresvport_af "int *port" "int af" +.Ft int +.Fn iruserok_sa "const void *addr" "int addrlen" "int superuser" "const char *ruser" "const char *luser" +.Sh DESCRIPTION +The +.Fn rcmd +function +is used by the super-user to execute a command on +a remote machine using an authentication scheme based +on reserved port numbers. +The +.Fn rresvport +function +returns a descriptor to a socket +with an address in the privileged port space. +The +.Fn ruserok +function +is used by servers +to authenticate clients requesting service with +.Fn rcmd . +All three functions are present in the same file and are used +by the +.Xr rshd 8 +server (among others). +.Pp +The +.Fn rcmd +function +looks up the host +.Fa *ahost +using +.Xr gethostbyname 3 , +returning -1 if the host does not exist. +Otherwise +.Fa *ahost +is set to the standard name of the host +and a connection is established to a server +residing at the well-known Internet port +.Fa inport . +.Pp +If the connection succeeds, +a socket in the Internet domain of type +.Dv SOCK_STREAM +is returned to the caller, and given to the remote +command as +.Em stdin +and +.Em stdout . +If +.Fa fd2p +is non-zero, then an auxiliary channel to a control +process will be set up, and a descriptor for it will be placed +in +.Fa *fd2p . +The control process will return diagnostic +output from the command (unit 2) on this channel, and will also +accept bytes on this channel as being +.Tn UNIX +signal numbers, to be +forwarded to the process group of the command. +If +.Fa fd2p +is 0, then the +.Em stderr +(unit 2 of the remote +command) will be made the same as the +.Em stdout +and no +provision is made for sending arbitrary signals to the remote process, +although you may be able to get its attention by using out-of-band data. +.Pp +The protocol is described in detail in +.Xr rshd 8 . +.Pp +The +.Fn rresvport +function is used to obtain a socket to which an address with a Privileged +Internet port is bound. +This socket is suitable for use by +.Fn rcmd +and several other functions. +Privileged Internet ports are those in the range 0 to 1023. +Only the super-user is allowed to bind an address of this sort +to a socket. +.Pp +The +.Fn iruserok +and +.Fn ruserok +functions take a remote host's IP address or name, as returned by the +.Xr gethostbyname 3 +routines, two user names and a flag indicating whether the local user's +name is that of the super-user. +Then, if the user is +.Em NOT +the super-user, it checks the +.Pa /etc/hosts.equiv +file. +If that lookup is not done, or is unsuccessful, the +.Pa .rhosts +in the local user's home directory is checked to see if the request for +service is allowed. +.Pp +If this file does not exist, is not a regular file, is owned by anyone +other than the user or the super-user, or is writable by anyone other +than the owner, the check automatically fails. +Zero is returned if the machine name is listed in the +.Dq Pa hosts.equiv +file, or the host and remote user name are found in the +.Dq Pa .rhosts +file; otherwise +.Fn iruserok +and +.Fn ruserok +return -1. +If the local domain (as obtained from +.Xr gethostname 3 ) +is the same as the remote domain, only the machine name need be specified. +.Pp +The +.Fn iruserok +function is strongly preferred for security reasons. +It requires trusting the local DNS at most, while the +.Fn ruserok +function requires trusting the entire DNS, which can be spoofed. +.Pp +The functions with an +.Dq Li _af +or +.Dq Li _sa +suffix, i.e., +.Fn rcmd_af , +.Fn rresvport_af +and +.Fn iruserok_sa , +work the same as the corresponding functions without a +suffix, except that they are capable of handling both IPv6 and IPv4 ports. +.Pp +The +.Dq Li _af +suffix means that the function has an additional +.Fa af +argument which is used to specify the address family, +(see below). +The +.Fa af +argument extension is implemented for functions +that have no binary address argument. +Instead, the +.Fa af +argument specifies which address family is desired. +.Pp +The +.Dq Li _sa +suffix means that the function has general socket address and +length arguments. +As the socket address is a protocol independent data structure, +IPv4 and IPv6 socket address can be passed as desired. +The +.Fa sa +argument extension is implemented for functions +that pass a protocol dependent binary address argument. +The argument needs to be replaced with a more general address structure +to support multiple address families in a general way. +.Pp +The functions with neither an +.Dq Li _af +suffix nor an +.Dq Li _sa +suffix work for IPv4 only, except for +.Fn ruserok +which can handle both IPv6 and IPv4. +To switch the address family, the +.Fa af +argument must be filled with +.Dv AF_INET , +or +.Dv AF_INET6 . +For +.Fn rcmd_af , +.Dv PF_UNSPEC +is also allowed. +.Sh DIAGNOSTICS +The +.Fn rcmd +function +returns a valid socket descriptor on success. +It returns -1 on error and prints a diagnostic message +on the standard error. +.Pp +The +.Fn rresvport +function +returns a valid, bound socket descriptor on success. +It returns -1 on error with the global value +.Va errno +set according to the reason for failure. +The error code +.Er EAGAIN +is overloaded to mean ``All network ports in use.'' +.Sh SEE ALSO +.Xr rlogin 1 , +.Xr rsh 1 , +.Xr intro 2 , +.Xr rexec 3 , +.Xr rexecd 8 , +.Xr rlogind 8 , +.Xr rshd 8 +.Pp +.Rs +.%A W. Stevens +.%A M. Thomas +.%T "Advanced Socket API for IPv6" +.%O RFC2292 +.Re +.Rs +.%A W. Stevens +.%A M. Thomas +.%A E. Nordmark +.%T "Advanced Socket API for IPv6" +.%O draft-ietf-ipngwg-rfc2292bis-01.txt +.Re +.Sh HISTORY +Most of these +functions appeared in +.Bx 4.2 . +.Fn rresvport_af +appeared in RFC2292, and was implemented by the WIDE project +for the Hydrangea IPv6 protocol stack kit. +.Fn rcmd_af +appeared in draft-ietf-ipngwg-rfc2292bis-01.txt, +and was implemented in the WIDE/KAME IPv6 protocol stack kit. +.Fn iruserok_sa +appeared in discussion on the IETF ipngwg mailing list, +and was implemented in +.Fx 4.0 . diff --git a/newlib/libc/sys/linux/net/rcmd.c b/newlib/libc/sys/linux/net/rcmd.c new file mode 100644 index 000000000..708b69d1b --- /dev/null +++ b/newlib/libc/sys/linux/net/rcmd.c @@ -0,0 +1,779 @@ +/* + * Copyright (c) 1983, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)rcmd.c 8.3 (Berkeley) 3/26/94"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> +#include <time.h> +#include <sys/select.h> + +#include "namespace.h" +#include <sys/param.h> +#include <sys/socket.h> +#include <sys/stat.h> + +#include <netinet/in.h> +#include <arpa/inet.h> + +#include <signal.h> +#include <fcntl.h> +#include <netdb.h> +#include <stdlib.h> +#include <unistd.h> +#include <pwd.h> +#include <errno.h> +#include <stdio.h> +#include <ctype.h> +#include <string.h> +#ifdef YP +#include <rpc/rpc.h> +#include <rpcsvc/yp_prot.h> +#include <rpcsvc/ypclnt.h> +#endif +#include <arpa/nameser.h> +#include "un-namespace.h" + +/* wrapper for KAME-special getnameinfo() */ +#ifndef NI_WITHSCOPEID +#define NI_WITHSCOPEID 0 +#endif + +extern int innetgr( const char *, const char *, const char *, const char * ); +extern int rcmdsh(char **ahost, int rport, const char *locuser, const char *remuser, const char *cmd, const char *rshprog); +int rresvport_af(int *alport, int family); + +#define max(a, b) ((a > b) ? a : b) + +int __ivaliduser(FILE *, u_int32_t, const char *, const char *); +int __ivaliduser_af(FILE *,const void *, const char *, const char *, int, int); +int __ivaliduser_sa(FILE *, const struct sockaddr *, socklen_t, const char *, + const char *); +static int __icheckhost(const struct sockaddr *, socklen_t, const char *); + +char paddr[NI_MAXHOST]; + +int +rcmd_af(ahost, rport, locuser, remuser, cmd, fd2p, af) + char **ahost; + u_short rport; + const char *locuser, *remuser, *cmd; + int *fd2p; + int af; +{ + struct addrinfo hints, *res, *ai; + struct sockaddr_storage from; + fd_set reads; + sigset_t oldmask, newmask; + pid_t pid; + int s, aport, lport, timo, error; + char c, *p; + int refused, nres; + char num[8]; + static char canonnamebuf[MAXDNAME]; /* is it proper here? */ + + /* call rcmdsh() with specified remote shell if appropriate. */ + if (!issetugid() && (p = getenv("RSH"))) { + struct servent *sp = getservbyname("shell", "tcp"); + + if (sp && sp->s_port == rport) + return (rcmdsh(ahost, rport, locuser, remuser, + cmd, p)); + } + + /* use rsh(1) if non-root and remote port is shell. */ + if (geteuid()) { + struct servent *sp = getservbyname("shell", "tcp"); + + if (sp && sp->s_port == rport) + return (rcmdsh(ahost, rport, locuser, remuser, + cmd, NULL)); + } + + pid = getpid(); + + memset(&hints, 0, sizeof(hints)); + hints.ai_flags = AI_CANONNAME; + hints.ai_family = af; + hints.ai_socktype = SOCK_STREAM; + hints.ai_protocol = 0; + (void)snprintf(num, sizeof(num), "%d", ntohs(rport)); + error = getaddrinfo(*ahost, num, &hints, &res); + if (error) { + fprintf(stderr, "rcmd: getaddrinfo: %s\n", + gai_strerror(error)); + if (error == EAI_SYSTEM) + fprintf(stderr, "rcmd: getaddrinfo: %s\n", + strerror(errno)); + return (-1); + } + + if (res->ai_canonname + && strlen(res->ai_canonname) + 1 < sizeof(canonnamebuf)) { + strncpy(canonnamebuf, res->ai_canonname, sizeof(canonnamebuf)); + *ahost = canonnamebuf; + } + nres = 0; + for (ai = res; ai; ai = ai->ai_next) + nres++; + ai = res; + refused = 0; + sigemptyset(&newmask); + sigaddset(&newmask, SIGURG); + sigprocmask(SIG_BLOCK, (const sigset_t *)&newmask, &oldmask); + for (timo = 1, lport = IPPORT_RESERVED - 1;;) { + s = rresvport_af(&lport, ai->ai_family); + if (s < 0) { + if (errno != EAGAIN && ai->ai_next) { + ai = ai->ai_next; + continue; + } + if (errno == EAGAIN) + (void)fprintf(stderr, + "rcmd: socket: All ports in use\n"); + else + (void)fprintf(stderr, "rcmd: socket: %s\n", + strerror(errno)); + freeaddrinfo(res); + sigprocmask(SIG_SETMASK, (const sigset_t *)&oldmask, + NULL); + return (-1); + } + fcntl(s, F_SETOWN, pid); + if (connect(s, ai->ai_addr, ai->ai_addrlen) >= 0) + break; + (void)close(s); + if (errno == EADDRINUSE) { + lport--; + continue; + } + if (errno == ECONNREFUSED) + refused = 1; + if (ai->ai_next == NULL && (!refused || timo > 16)) { + (void)fprintf(stderr, "%s: %s\n", + *ahost, strerror(errno)); + freeaddrinfo(res); + sigprocmask(SIG_SETMASK, (const sigset_t *)&oldmask, + NULL); + return (-1); + } + if (nres > 1) { + int oerrno = errno; + + getnameinfo(ai->ai_addr, ai->ai_addrlen, + paddr, sizeof(paddr), + NULL, 0, + NI_NUMERICHOST|NI_WITHSCOPEID); + (void)fprintf(stderr, "connect to address %s: ", + paddr); + errno = oerrno; + perror(0); + } + if ((ai = ai->ai_next) == NULL) { + /* refused && timo <= 16 */ + struct timespec time_to_sleep, time_remaining; + + time_to_sleep.tv_sec = timo; + time_to_sleep.tv_nsec = 0; + (void)nanosleep(&time_to_sleep, &time_remaining); + timo *= 2; + ai = res; + refused = 0; + } + if (nres > 1) { + getnameinfo(ai->ai_addr, ai->ai_addrlen, + paddr, sizeof(paddr), + NULL, 0, + NI_NUMERICHOST|NI_WITHSCOPEID); + fprintf(stderr, "Trying %s...\n", paddr); + } + } + lport--; + if (fd2p == 0) { + write(s, "", 1); + lport = 0; + } else { + char num[8]; + int s2 = rresvport_af(&lport, ai->ai_family), s3; + int len = ai->ai_addrlen; + int nfds; + + if (s2 < 0) + goto bad; + listen(s2, 1); + (void)snprintf(num, sizeof(num), "%d", lport); + if (write(s, num, strlen(num)+1) != strlen(num)+1) { + (void)fprintf(stderr, + "rcmd: write (setting up stderr): %s\n", + strerror(errno)); + (void)close(s2); + goto bad; + } + nfds = max(s, s2)+1; + if(nfds > FD_SETSIZE) { + fprintf(stderr, "rcmd: too many files\n"); + (void)close(s2); + goto bad; + } +again: + FD_ZERO(&reads); + FD_SET(s, &reads); + FD_SET(s2, &reads); + errno = 0; + if (select(nfds, &reads, 0, 0, 0) < 1 || !FD_ISSET(s2, &reads)){ + if (errno != 0) + (void)fprintf(stderr, + "rcmd: select (setting up stderr): %s\n", + strerror(errno)); + else + (void)fprintf(stderr, + "select: protocol failure in circuit setup\n"); + (void)close(s2); + goto bad; + } + s3 = accept(s2, (struct sockaddr *)&from, &len); + switch (from.ss_family) { + case AF_INET: + aport = ntohs(((struct sockaddr_in *)&from)->sin_port); + break; +#ifdef INET6 + case AF_INET6: + aport = ntohs(((struct sockaddr_in6 *)&from)->sin6_port); + break; +#endif + default: + aport = 0; /* error */ + break; + } + /* + * XXX careful for ftp bounce attacks. If discovered, shut them + * down and check for the real auxiliary channel to connect. + */ + if (aport == 20) { + close(s3); + goto again; + } + (void)close(s2); + if (s3 < 0) { + (void)fprintf(stderr, + "rcmd: accept: %s\n", strerror(errno)); + lport = 0; + goto bad; + } + *fd2p = s3; + if (aport >= IPPORT_RESERVED || aport < IPPORT_RESERVED / 2) { + (void)fprintf(stderr, + "socket: protocol failure in circuit setup.\n"); + goto bad2; + } + } + (void)write(s, locuser, strlen(locuser)+1); + (void)write(s, remuser, strlen(remuser)+1); + (void)write(s, cmd, strlen(cmd)+1); + if (read(s, &c, 1) != 1) { + (void)fprintf(stderr, + "rcmd: %s: %s\n", *ahost, strerror(errno)); + goto bad2; + } + if (c != 0) { + while (read(s, &c, 1) == 1) { + (void)write(STDERR_FILENO, &c, 1); + if (c == '\n') + break; + } + goto bad2; + } + sigprocmask(SIG_SETMASK, (const sigset_t *)&oldmask, NULL); + freeaddrinfo(res); + return (s); +bad2: + if (lport) + (void)close(*fd2p); +bad: + (void)close(s); + sigprocmask(SIG_SETMASK, (const sigset_t *)&oldmask, NULL); + freeaddrinfo(res); + return (-1); +} + +int +rcmd(ahost, rport, locuser, remuser, cmd, fd2p) + char **ahost; + u_short rport; + const char *locuser, *remuser, *cmd; + int *fd2p; +{ + return rcmd_af(ahost, rport, locuser, remuser, cmd, fd2p, AF_INET); +} + +int +rresvport(port) + int *port; +{ + return rresvport_af(port, AF_INET); +} + +int +rresvport_af(alport, family) + int *alport, family; +{ + int s; + struct sockaddr_storage ss; + u_short *sport; + + memset(&ss, 0, sizeof(ss)); + ss.ss_family = family; + switch (family) { + case AF_INET: + sport = &((struct sockaddr_in *)&ss)->sin_port; + ((struct sockaddr_in *)&ss)->sin_addr.s_addr = INADDR_ANY; + break; +#ifdef INET6 + case AF_INET6: + sport = &((struct sockaddr_in6 *)&ss)->sin6_port; + ((struct sockaddr_in6 *)&ss)->sin6_addr = in6addr_any; + break; +#endif + default: + errno = EAFNOSUPPORT; + return -1; + } + + s = socket(ss.ss_family, SOCK_STREAM, 0); + if (s < 0) + return (-1); +#if 0 /* compat_exact_traditional_rresvport_semantics */ + sin.sin_port = htons((u_short)*alport); + if (_bind(s, (struct sockaddr *)&sin, sizeof(sin)) >= 0) + return (s); + if (errno != EADDRINUSE) { + (void)close(s); + return (-1); + } +#endif + *sport = 0; + if (bindresvport_sa(s, (struct sockaddr *)&ss) == -1) { + (void)close(s); + return (-1); + } + *alport = (int)ntohs(*sport); + return (s); +} + +int __check_rhosts_file = 1; +char *__rcmd_errstr; + +int +ruserok(rhost, superuser, ruser, luser) + const char *rhost, *ruser, *luser; + int superuser; +{ + struct addrinfo hints, *res, *r; + int error; + + memset(&hints, 0, sizeof(hints)); + hints.ai_family = PF_UNSPEC; + hints.ai_socktype = SOCK_DGRAM; /*dummy*/ + error = getaddrinfo(rhost, "0", &hints, &res); + if (error) + return (-1); + + for (r = res; r; r = r->ai_next) { + if (iruserok_sa(r->ai_addr, r->ai_addrlen, superuser, ruser, + luser) == 0) { + freeaddrinfo(res); + return (0); + } + } + freeaddrinfo(res); + return (-1); +} + +/* + * New .rhosts strategy: We are passed an ip address. We spin through + * hosts.equiv and .rhosts looking for a match. When the .rhosts only + * has ip addresses, we don't have to trust a nameserver. When it + * contains hostnames, we spin through the list of addresses the nameserver + * gives us and look for a match. + * + * Returns 0 if ok, -1 if not ok. + */ +int +iruserok(raddr, superuser, ruser, luser) + unsigned long raddr; + int superuser; + const char *ruser, *luser; +{ + struct sockaddr_in sin; + int sin_len; + + memset(&sin, 0, sizeof(sin)); + sin.sin_family = AF_INET; + sin_len = sizeof(struct sockaddr_in); + memcpy(&sin.sin_addr, &raddr, sizeof(sin.sin_addr)); + return iruserok_sa((struct sockaddr *)&sin, sin_len, superuser, + ruser, luser); +} + +/* + * AF independent extension of iruserok. + * + * Returns 0 if ok, -1 if not ok. + */ +int +iruserok_sa(ra, rlen, superuser, ruser, luser) + const void *ra; + int rlen; + int superuser; + const char *ruser, *luser; +{ + char *cp; + struct stat sbuf; + struct passwd *pwd; + FILE *hostf; + uid_t uid; + int first; + char pbuf[MAXPATHLEN]; + const struct sockaddr *raddr; + struct sockaddr_storage ss; + + /* avoid alignment issue */ + if (rlen > sizeof(ss)) + return(-1); + memcpy(&ss, ra, rlen); + raddr = (struct sockaddr *)&ss; + + first = 1; + hostf = superuser ? NULL : fopen(_PATH_HEQUIV, "r"); +again: + if (hostf) { + if (__ivaliduser_sa(hostf, raddr, rlen, luser, ruser) == 0) { + (void)fclose(hostf); + return (0); + } + (void)fclose(hostf); + } + if (first == 1 && (__check_rhosts_file || superuser)) { + first = 0; + if ((pwd = getpwnam(luser)) == NULL) + return (-1); + (void)strcpy(pbuf, pwd->pw_dir); + (void)strcat(pbuf, "/.rhosts"); + + /* + * Change effective uid while opening .rhosts. If root and + * reading an NFS mounted file system, can't read files that + * are protected read/write owner only. + */ + uid = geteuid(); + (void)seteuid(pwd->pw_uid); + hostf = fopen(pbuf, "r"); + (void)seteuid(uid); + + if (hostf == NULL) + return (-1); + /* + * If not a regular file, or is owned by someone other than + * user or root or if writeable by anyone but the owner, quit. + */ + cp = NULL; + if (lstat(pbuf, &sbuf) < 0) + cp = ".rhosts lstat failed"; + else if (!S_ISREG(sbuf.st_mode)) + cp = ".rhosts not regular file"; + else if (fstat(fileno(hostf), &sbuf) < 0) + cp = ".rhosts fstat failed"; + else if (sbuf.st_uid && sbuf.st_uid != pwd->pw_uid) + cp = "bad .rhosts owner"; + else if (sbuf.st_mode & (S_IWGRP|S_IWOTH)) + cp = ".rhosts writeable by other than owner"; + /* If there were any problems, quit. */ + if (cp) { + __rcmd_errstr = cp; + (void)fclose(hostf); + return (-1); + } + goto again; + } + return (-1); +} + +/* + * XXX + * Don't make static, used by lpd(8). + * + * Returns 0 if ok, -1 if not ok. + */ +int +__ivaliduser(hostf, raddr, luser, ruser) + FILE *hostf; + u_int32_t raddr; + const char *luser, *ruser; +{ + struct sockaddr_in sin; + int sin_len; + + memset(&sin, 0, sizeof(sin)); + sin.sin_family = AF_INET; + sin_len = sizeof(struct sockaddr_in); + memcpy(&sin.sin_addr, &raddr, sizeof(sin.sin_addr)); + return __ivaliduser_sa(hostf, (struct sockaddr *)&sin, sin_len, + luser, ruser); +} + +/* + * Returns 0 if ok, -1 if not ok. + * + * XXX obsolete API. + */ +int +__ivaliduser_af(hostf, raddr, luser, ruser, af, len) + FILE *hostf; + const void *raddr; + const char *luser, *ruser; + int af, len; +{ + struct sockaddr *sa = NULL; + struct sockaddr_in *sin = NULL; +#ifdef INET6 + struct sockaddr_in6 *sin6 = NULL; +#endif + struct sockaddr_storage ss; + + memset(&ss, 0, sizeof(ss)); + switch (af) { + case AF_INET: + if (len != sizeof(sin->sin_addr)) + return -1; + sin = (struct sockaddr_in *)&ss; + sin->sin_family = AF_INET; + memcpy(&sin->sin_addr, raddr, sizeof(sin->sin_addr)); + break; +#ifdef INET6 + case AF_INET6: + if (len != sizeof(sin6->sin6_addr)) + return -1; + /* you will lose scope info */ + sin6 = (struct sockaddr_in6 *)&ss; + sin6->sin6_family = AF_INET6; + memcpy(&sin6->sin6_addr, raddr, sizeof(sin6->sin6_addr)); + break; +#endif + default: + return -1; + } + + sa = (struct sockaddr *)&ss; + return __ivaliduser_sa(hostf, sa, 0, luser, ruser); +} + +int +__ivaliduser_sa(hostf, raddr, salen, luser, ruser) + FILE *hostf; + const struct sockaddr *raddr; + socklen_t salen; + const char *luser, *ruser; +{ + char *user, *p; + int ch; + char buf[MAXHOSTNAMELEN + 128]; /* host + login */ + char hname[MAXHOSTNAMELEN]; + /* Presumed guilty until proven innocent. */ + int userok = 0, hostok = 0; +#ifdef YP + char *ypdomain; + + if (yp_get_default_domain(&ypdomain)) + ypdomain = NULL; +#else +#define ypdomain NULL +#endif + /* We need to get the damn hostname back for netgroup matching. */ + if (getnameinfo(raddr, salen, hname, sizeof(hname), NULL, 0, + NI_NAMEREQD) != 0) + return (-1); + + while (fgets(buf, sizeof(buf), hostf)) { + p = buf; + /* Skip lines that are too long. */ + if (strchr(p, '\n') == NULL) { + while ((ch = getc(hostf)) != '\n' && ch != EOF); + continue; + } + if (*p == '\n' || *p == '#') { + /* comment... */ + continue; + } + while (*p != '\n' && *p != ' ' && *p != '\t' && *p != '\0') { + *p = isupper((unsigned char)*p) ? tolower((unsigned char)*p) : *p; + p++; + } + if (*p == ' ' || *p == '\t') { + *p++ = '\0'; + while (*p == ' ' || *p == '\t') + p++; + user = p; + while (*p != '\n' && *p != ' ' && + *p != '\t' && *p != '\0') + p++; + } else + user = p; + *p = '\0'; + /* + * Do +/- and +@/-@ checking. This looks really nasty, + * but it matches SunOS's behavior so far as I can tell. + */ + switch(buf[0]) { + case '+': + if (!buf[1]) { /* '+' matches all hosts */ + hostok = 1; + break; + } + if (buf[1] == '@') /* match a host by netgroup */ + hostok = innetgr((char *)&buf[2], + (char *)&hname, NULL, ypdomain); + else /* match a host by addr */ + hostok = __icheckhost(raddr, salen, + (char *)&buf[1]); + break; + case '-': /* reject '-' hosts and all their users */ + if (buf[1] == '@') { + if (innetgr((char *)&buf[2], + (char *)&hname, NULL, ypdomain)) + return(-1); + } else { + if (__icheckhost(raddr, salen, + (char *)&buf[1])) + return(-1); + } + break; + default: /* if no '+' or '-', do a simple match */ + hostok = __icheckhost(raddr, salen, buf); + break; + } + switch(*user) { + case '+': + if (!*(user+1)) { /* '+' matches all users */ + userok = 1; + break; + } + if (*(user+1) == '@') /* match a user by netgroup */ + userok = innetgr(user+2, NULL, ruser, ypdomain); + else /* match a user by direct specification */ + userok = !(strcmp(ruser, user+1)); + break; + case '-': /* if we matched a hostname, */ + if (hostok) { /* check for user field rejections */ + if (!*(user+1)) + return(-1); + if (*(user+1) == '@') { + if (innetgr(user+2, NULL, + ruser, ypdomain)) + return(-1); + } else { + if (!strcmp(ruser, user+1)) + return(-1); + } + } + break; + default: /* no rejections: try to match the user */ + if (hostok) + userok = !(strcmp(ruser,*user ? user : luser)); + break; + } + if (hostok && userok) + return(0); + } + return (-1); +} + +/* + * Returns "true" if match, 0 if no match. + * + * NI_WITHSCOPEID is useful for comparing sin6_scope_id portion + * if af == AF_INET6. + */ +static int +__icheckhost(raddr, salen, lhost) + const struct sockaddr *raddr; + socklen_t salen; + const char *lhost; +{ + struct sockaddr_in sin; + struct sockaddr_in6 *sin6; + struct addrinfo hints, *res, *r; + int error; + char h1[NI_MAXHOST], h2[NI_MAXHOST]; + + if (raddr->sa_family == AF_INET6) { + sin6 = (struct sockaddr_in6 *)raddr; + if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { + memset(&sin, 0, sizeof(sin)); + sin.sin_family = AF_INET; + memcpy(&sin.sin_addr, &sin6->sin6_addr.s6_addr[12], + sizeof(sin.sin_addr)); + raddr = (struct sockaddr *)&sin; + salen = sizeof(struct sockaddr_in); + } + } + + h1[0] = '\0'; + if (getnameinfo(raddr, salen, h1, sizeof(h1), NULL, 0, + NI_NUMERICHOST | NI_WITHSCOPEID) != 0) + return (0); + + /* Resolve laddr into sockaddr */ + memset(&hints, 0, sizeof(hints)); + hints.ai_family = raddr->sa_family; + hints.ai_socktype = SOCK_DGRAM; /*XXX dummy*/ + res = NULL; + error = getaddrinfo(lhost, "0", &hints, &res); + if (error) + return (0); + + for (r = res; r ; r = r->ai_next) { + h2[0] = '\0'; + if (getnameinfo(r->ai_addr, r->ai_addrlen, h2, sizeof(h2), + NULL, 0, NI_NUMERICHOST | NI_WITHSCOPEID) != 0) + continue; + if (strcmp(h1, h2) == 0) { + freeaddrinfo(res); + return (1); + } + } + + /* No match. */ + freeaddrinfo(res); + return (0); +} diff --git a/newlib/libc/sys/linux/net/rcmdsh.3 b/newlib/libc/sys/linux/net/rcmdsh.3 new file mode 100644 index 000000000..43e6a8daa --- /dev/null +++ b/newlib/libc/sys/linux/net/rcmdsh.3 @@ -0,0 +1,116 @@ +.\" $OpenBSD: rcmdsh.3,v 1.6 1999/07/05 04:41:00 aaron Exp $ +.\" +.\" Copyright (c) 1983, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD: src/lib/libc/net/rcmdsh.3,v 1.2 2001/11/09 15:19:25 ru Exp $ +.\" +.Dd September 1, 1996 +.Dt RCMDSH 3 +.Os +.Sh NAME +.Nm rcmdsh +.Nd return a stream to a remote command without superuser +.Sh SYNOPSIS +.In unistd.h +.Ft int +.Fo rcmdsh +.Fa "char **ahost" +.Fa "int inport" +.Fa "const char *locuser" +.Fa "const char *remuser" +.Fa "const char *cmd" +.Fa "const char *rshprog" +.Fc +.Sh DESCRIPTION +The +.Fn rcmdsh +function +is used by normal users to execute a command on +a remote machine using an authentication scheme based +on reserved port numbers using +.Xr rshd 8 +or the value of +.Fa rshprog +(if +.No non- Ns Dv NULL ) . +.Pp +The +.Fn rcmdsh +function +looks up the host +.Fa *ahost +using +.Xr gethostbyname 3 , +returning \-1 if the host does not exist. +Otherwise +.Fa *ahost +is set to the standard name of the host +and a connection is established to a server +residing at the well-known Internet port +.Dq Li shell/tcp +(or whatever port is used by +.Fa rshprog ) . +The parameter +.Fa inport +is ignored; it is only included to provide an interface similar to +.Xr rcmd 3 . +.Pp +If the connection succeeds, +a socket in the +.Ux +domain of type +.Dv SOCK_STREAM +is returned to the caller, and given to the remote +command as stdin, stdout, and stderr. +.Sh RETURN VALUES +The +.Fn rcmdsh +function +returns a valid socket descriptor on success. +Otherwise, \-1 is returned +and a diagnostic message is printed on the standard error. +.Sh SEE ALSO +.Xr rsh 1 , +.Xr socketpair 2 , +.Xr rcmd 3 , +.Xr rshd 8 +.Sh BUGS +If +.Xr rsh 1 +encounters an error, a file descriptor is still returned instead of \-1. +.Sh HISTORY +The +.Fn rcmdsh +function first appeared in +.Ox 2.0 , +and made its way into +.Fx 5.0 . diff --git a/newlib/libc/sys/linux/net/rcmdsh.c b/newlib/libc/sys/linux/net/rcmdsh.c new file mode 100644 index 000000000..741814c11 --- /dev/null +++ b/newlib/libc/sys/linux/net/rcmdsh.c @@ -0,0 +1,169 @@ +/* $OpenBSD: rcmdsh.c,v 1.5 1998/04/25 16:23:58 millert Exp $ */ + +/* + * Copyright (c) 2001, MagniComp + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the distribution. + * 3. Neither the name of the MagniComp nor the names of its contributors may + * be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * This is an rcmd() replacement originally by + * Chris Siebenmann <cks@utcc.utoronto.ca>. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> +#include <machine/endian.h> + +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/wait.h> + +#include <errno.h> +#include <netdb.h> +#include <paths.h> +#include <pwd.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> + +#ifndef _PATH_RSH +#define _PATH_RSH "/usr/bin/rsh" +#endif + +/* + * This is a replacement rcmd() function that uses the rsh(1) + * program in place of a direct rcmd(3) function call so as to + * avoid having to be root. Note that rport is ignored. + */ +int +rcmdsh(ahost, rport, locuser, remuser, cmd, rshprog) + char **ahost; + int rport; + const char *locuser, *remuser, *cmd, *rshprog; +{ + struct addrinfo hints, *res; + int cpid, sp[2], error; + char *p; + struct passwd *pw; + char num[8]; + static char hbuf[NI_MAXHOST]; + + /* What rsh/shell to use. */ + if (rshprog == NULL) + rshprog = _PATH_RSH; + + /* locuser must exist on this host. */ + if ((pw = getpwnam(locuser)) == NULL) { + (void)fprintf(stderr, "rcmdsh: unknown user: %s\n", locuser); + return (-1); + } + + /* Validate remote hostname. */ + if (strcmp(*ahost, "localhost") != 0) { + memset(&hints, 0, sizeof(hints)); + hints.ai_flags = AI_CANONNAME; + hints.ai_family = PF_UNSPEC; + hints.ai_socktype = SOCK_STREAM; + (void)snprintf(num, sizeof(num), "%d", ntohs(rport)); + error = getaddrinfo(*ahost, num, &hints, &res); + if (error) { + fprintf(stderr, "rcmdsh: getaddrinfo: %s\n", + gai_strerror(error)); + return (-1); + } + if (res->ai_canonname) { + strncpy(hbuf, res->ai_canonname, sizeof(hbuf) - 1); + hbuf[sizeof(hbuf) - 1] = '\0'; + *ahost = hbuf; + } + freeaddrinfo(res); + } + + /* Get a socketpair we'll use for stdin and stdout. */ + if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, sp) == -1) { + perror("rcmdsh: socketpair"); + return (-1); + } + + cpid = fork(); + if (cpid == -1) { + perror("rcmdsh: fork failed"); + return (-1); + } else if (cpid == 0) { + /* + * Child. We use sp[1] to be stdin/stdout, and close sp[0]. + */ + (void)close(sp[0]); + if (dup2(sp[1], 0) == -1 || dup2(0, 1) == -1) { + perror("rcmdsh: dup2 failed"); + _exit(255); + } + /* Fork again to lose parent. */ + cpid = fork(); + if (cpid == -1) { + perror("rcmdsh: fork to lose parent failed"); + _exit(255); + } + if (cpid > 0) + _exit(0); + + /* In grandchild here. Become local user for rshprog. */ + if (setuid(pw->pw_uid) == -1) { + (void)fprintf(stderr, "rcmdsh: setuid(%u): %s\n", + pw->pw_uid, strerror(errno)); + _exit(255); + } + + /* + * If remote host is "localhost" and local and remote users + * are the same, avoid running remote shell for efficiency. + */ + if (strcmp(*ahost, "localhost") == 0 && + strcmp(locuser, remuser) == 0) { + if (pw->pw_shell[0] == '\0') + rshprog = _PATH_BSHELL; + else + rshprog = pw->pw_shell; + p = strrchr(rshprog, '/'); + execlp(rshprog, p ? p + 1 : rshprog, "-c", cmd, + (char *)NULL); + } else { + p = strrchr(rshprog, '/'); + execlp(rshprog, p ? p + 1 : rshprog, *ahost, "-l", + remuser, cmd, (char *)NULL); + } + (void)fprintf(stderr, "rcmdsh: execlp %s failed: %s\n", + rshprog, strerror(errno)); + _exit(255); + } else { + /* Parent. close sp[1], return sp[0]. */ + (void)close(sp[1]); + /* Reap child. */ + (void)wait(NULL); + return (sp[0]); + } + /* NOTREACHED */ +} diff --git a/newlib/libc/sys/linux/net/recv.c b/newlib/libc/sys/linux/net/recv.c new file mode 100644 index 000000000..43e537bbb --- /dev/null +++ b/newlib/libc/sys/linux/net/recv.c @@ -0,0 +1,54 @@ +/* + * Copyright (c) 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)recv.c 8.2 (Berkeley) 2/21/94"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include "namespace.h" +#include <sys/types.h> +#include <sys/socket.h> + +#include <stddef.h> +#include "un-namespace.h" + +ssize_t +recv(s, buf, len, flags) + int s, flags; + size_t len; + void *buf; +{ + return (recvfrom(s, buf, len, flags, NULL, 0)); +} diff --git a/newlib/libc/sys/linux/net/res_comp.c b/newlib/libc/sys/linux/net/res_comp.c new file mode 100644 index 000000000..12ea02c6d --- /dev/null +++ b/newlib/libc/sys/linux/net/res_comp.c @@ -0,0 +1,268 @@ +/* + * Copyright (c) 1985, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +/* + * Portions Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)res_comp.c 8.1 (Berkeley) 6/4/93"; +static char orig_rcsid[] = "From: Id: res_comp.c,v 8.11 1997/05/21 19:31:04 halley Exp $"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <sys/param.h> +#include <netinet/in.h> +#include <arpa/nameser.h> +#include <ctype.h> +#include <resolv.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> + +#define BIND_4_COMPAT + +/* + * Expand compressed domain name 'comp_dn' to full domain name. + * 'msg' is a pointer to the begining of the message, + * 'eomorig' points to the first location after the message, + * 'exp_dn' is a pointer to a buffer of size 'length' for the result. + * Return size of compressed name or -1 if there was an error. + */ +int +dn_expand(const u_char *msg, const u_char *eom, const u_char *src, + char *dst, int dstsiz) +{ + int n = ns_name_uncompress(msg, eom, src, dst, (size_t)dstsiz); + + if (n > 0 && dst[0] == '.') + dst[0] = '\0'; + return (n); +} + +/* + * Pack domain name 'exp_dn' in presentation form into 'comp_dn'. + * Return the size of the compressed name or -1. + * 'length' is the size of the array pointed to by 'comp_dn'. + */ +int +dn_comp(const char *src, u_char *dst, int dstsiz, + u_char **dnptrs, u_char **lastdnptr) +{ + return (ns_name_compress(src, dst, (size_t)dstsiz, + (const u_char **)dnptrs, + (const u_char **)lastdnptr)); +} + +/* + * Skip over a compressed domain name. Return the size or -1. + */ +int +dn_skipname(const u_char *ptr, const u_char *eom) { + const u_char *saveptr = ptr; + + if (ns_name_skip(&ptr, eom) == -1) + return (-1); + return (ptr - saveptr); +} + +/* + * Verify that a domain name uses an acceptable character set. + */ + +/* + * Note the conspicuous absence of ctype macros in these definitions. On + * non-ASCII hosts, we can't depend on string literals or ctype macros to + * tell us anything about network-format data. The rest of the BIND system + * is not careful about this, but for some reason, we're doing it right here. + */ +#define PERIOD 0x2e +#define hyphenchar(c) ((c) == 0x2d) +#define bslashchar(c) ((c) == 0x5c) +#define periodchar(c) ((c) == PERIOD) +#define asterchar(c) ((c) == 0x2a) +#define alphachar(c) (((c) >= 0x41 && (c) <= 0x5a) \ + || ((c) >= 0x61 && (c) <= 0x7a)) +#define digitchar(c) ((c) >= 0x30 && (c) <= 0x39) + +#define borderchar(c) (alphachar(c) || digitchar(c)) +#define middlechar(c) (borderchar(c) || hyphenchar(c)) +#define domainchar(c) ((c) > 0x20 && (c) < 0x7f) + +int +res_hnok(dn) + const char *dn; +{ + int ppch = '\0', pch = PERIOD, ch = *dn++; + + while (ch != '\0') { + int nch = *dn++; + + if (periodchar(ch)) { + (void)NULL; + } else if (periodchar(pch)) { + if (!borderchar(ch)) + return (0); + } else if (periodchar(nch) || nch == '\0') { + if (!borderchar(ch)) + return (0); + } else { + if (!middlechar(ch)) + return (0); + } + ppch = pch, pch = ch, ch = nch; + } + return (1); +} + +/* + * hostname-like (A, MX, WKS) owners can have "*" as their first label + * but must otherwise be as a host name. + */ +int +res_ownok(dn) + const char *dn; +{ + if (asterchar(dn[0])) { + if (periodchar(dn[1])) + return (res_hnok(dn+2)); + if (dn[1] == '\0') + return (1); + } + return (res_hnok(dn)); +} + +/* + * SOA RNAMEs and RP RNAMEs can have any printable character in their first + * label, but the rest of the name has to look like a host name. + */ +int +res_mailok(dn) + const char *dn; +{ + int ch, escaped = 0; + + /* "." is a valid missing representation */ + if (*dn == '\0') + return (1); + + /* otherwise <label>.<hostname> */ + while ((ch = *dn++) != '\0') { + if (!domainchar(ch)) + return (0); + if (!escaped && periodchar(ch)) + break; + if (escaped) + escaped = 0; + else if (bslashchar(ch)) + escaped = 1; + } + if (periodchar(ch)) + return (res_hnok(dn)); + return (0); +} + +/* + * This function is quite liberal, since RFC 1034's character sets are only + * recommendations. + */ +int +res_dnok(dn) + const char *dn; +{ + int ch; + + while ((ch = *dn++) != '\0') + if (!domainchar(ch)) + return (0); + return (1); +} + +#ifdef BIND_4_COMPAT +/* + * This module must export the following externally-visible symbols: + * ___putlong + * ___putshort + * __getlong + * __getshort + * Note that one _ comes from C and the others come from us. + */ +void __putlong(u_int32_t src, u_char *dst) { ns_put32(src, dst); } +void __putshort(u_int16_t src, u_char *dst) { ns_put16(src, dst); } +u_int32_t _getlong(const u_char *src) { return (ns_get32(src)); } +u_int16_t _getshort(const u_char *src) { return (ns_get16(src)); } +#endif /*BIND_4_COMPAT*/ + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <resolv.h>. + */ +#undef dn_comp +__weak_reference(__dn_comp, dn_comp); +#undef dn_expand +__weak_reference(__dn_expand, dn_expand); diff --git a/newlib/libc/sys/linux/net/res_config.h b/newlib/libc/sys/linux/net/res_config.h new file mode 100644 index 000000000..b7deb38f9 --- /dev/null +++ b/newlib/libc/sys/linux/net/res_config.h @@ -0,0 +1,10 @@ +/* $FreeBSD: src/lib/libc/net/res_config.h,v 1.8 2002/03/22 23:41:54 obrien Exp $ */ + +#define DEBUG 1 /* enable debugging code (needed for dig) */ +#define RESOLVSORT /* allow sorting of addresses in gethostbyname */ +#define RFC1535 /* comply with RFC1535 (STRONGLY reccomended by vixie)*/ +#undef USELOOPBACK /* res_init() bind to localhost */ +#undef SUNSECURITY /* verify gethostbyaddr() calls - WE DONT NEED IT */ +#define MULTI_PTRS_ARE_ALIASES 1 /* fold multiple PTR records into aliases */ +#define CHECK_SRVR_ADDR 1 /* confirm that the server requested sent the reply */ +#define BIND_UPDATE 1 /* update support */ diff --git a/newlib/libc/sys/linux/net/res_data.c b/newlib/libc/sys/linux/net/res_data.c new file mode 100644 index 000000000..7db548078 --- /dev/null +++ b/newlib/libc/sys/linux/net/res_data.c @@ -0,0 +1,82 @@ +/* + * Copyright (c) 1995,1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <sys/param.h> +#include <sys/socket.h> +#include <sys/time.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> +#include <ctype.h> +#include <resolv.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "res_config.h" + +const char *_res_opcodes[] = { + "QUERY", + "IQUERY", + "CQUERYM", + "CQUERYU", /* experimental */ + "NOTIFY", /* experimental */ + "UPDATE", + "6", + "7", + "8", + "9", + "10", + "11", + "12", + "13", + "ZONEINIT", + "ZONEREF", +}; + +const char *_res_resultcodes[] = { + "NOERROR", + "FORMERR", + "SERVFAIL", + "NXDOMAIN", + "NOTIMP", + "REFUSED", + "YXDOMAIN", + "YXRRSET", + "NXRRSET", + "NOTAUTH", + "ZONEERR", + "11", + "12", + "13", + "14", + "NOCHANGE", +}; + +#ifdef BIND_UPDATE +const char *_res_sectioncodes[] = { + "ZONE", + "PREREQUISITES", + "UPDATE", + "ADDITIONAL", +}; +#endif diff --git a/newlib/libc/sys/linux/net/res_debug.c b/newlib/libc/sys/linux/net/res_debug.c new file mode 100644 index 000000000..786f633f4 --- /dev/null +++ b/newlib/libc/sys/linux/net/res_debug.c @@ -0,0 +1,1003 @@ +/* + * Copyright (c) 1985 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +/* + * Portions Copyright (c) 1995 by International Business Machines, Inc. + * + * International Business Machines, Inc. (hereinafter called IBM) grants + * permission under its copyrights to use, copy, modify, and distribute this + * Software with or without fee, provided that the above copyright notice and + * all paragraphs of this notice appear in all copies, and that the name of IBM + * not be used in connection with the marketing of any product incorporating + * the Software or modifications thereof, without specific, written prior + * permission. + * + * To the extent it has a right to do so, IBM grants an immunity from suit + * under its patents, if any, for the use, sale or manufacture of products to + * the extent that such products are used for performing Domain Name System + * dynamic updates in TCP/IP networks by means of the Software. No immunity is + * granted for any product per se or for any other function of any product. + * + * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL, + * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN + * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES. + */ + +/* + * Portions Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <sys/param.h> +#include <sys/socket.h> + +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> + +#include <ctype.h> +#include <errno.h> +#include <math.h> +#include <netdb.h> +#include <resolv.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> + +#define SPRINTF(x) sprintf x + +extern const char *_res_opcodes[]; +extern const char *_res_resultcodes[]; +extern const char *_res_sectioncodes[]; + +/* + * Print the current options. + */ +void +fp_resstat(struct __res_state *statp, FILE *file) { + u_long mask; + + fprintf(file, ";; res options:"); + if (!statp) + statp = &_res; + for (mask = 1; mask != 0; mask <<= 1) + if (statp->options & mask) + fprintf(file, " %s", p_option(mask)); + putc('\n', file); +} + +static void +do_section(ns_msg *handle, ns_sect section, int pflag, FILE *file) { + int n, sflag, rrnum; + char buf[2048]; /* XXX need to malloc */ + ns_opcode opcode; + ns_rr rr; + + /* + * Print answer records. + */ + sflag = (_res.pfcode & pflag); + if (_res.pfcode && !sflag) + return; + + opcode = ns_msg_getflag(*handle, ns_f_opcode); + rrnum = 0; + for (;;) { + if (ns_parserr(handle, section, rrnum, &rr)) { + if (errno != ENODEV) + fprintf(file, ";; ns_parserr: %s\n", + strerror(errno)); + else if (rrnum > 0 && sflag != 0 && + (_res.pfcode & RES_PRF_HEAD1)) + putc('\n', file); + return; + } + if (rrnum == 0 && sflag != 0 && (_res.pfcode & RES_PRF_HEAD1)) + fprintf(file, ";; %s SECTION:\n", + p_section(section, opcode)); + if (section == ns_s_qd) + fprintf(file, ";;\t%s, type = %s, class = %s\n", + ns_rr_name(rr), + p_type(ns_rr_type(rr)), + p_class(ns_rr_class(rr))); + else { + n = ns_sprintrr(handle, &rr, NULL, NULL, + buf, sizeof buf); + if (n < 0) { + fprintf(file, ";; ns_sprintrr: %s\n", + strerror(errno)); + return; + } + fputs(buf, file); + fputc('\n', file); + } + rrnum++; + } +} + +void +p_query(const u_char *msg) { + fp_query(msg, stdout); +} + +void +fp_query(const u_char *msg, FILE *file) { + fp_nquery(msg, PACKETSZ, file); +} + +/* + * Print the contents of a query. + * This is intended to be primarily a debugging routine. + */ +void +fp_nquery(const u_char *msg, int len, FILE *file) { + ns_msg handle; + int qdcount, ancount, nscount, arcount; + u_int opcode, rcode, id; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) + return; + + if (ns_initparse(msg, len, &handle) < 0) { + fprintf(file, ";; ns_initparse: %s\n", strerror(errno)); + return; + } + opcode = ns_msg_getflag(handle, ns_f_opcode); + rcode = ns_msg_getflag(handle, ns_f_rcode); + id = ns_msg_id(handle); + qdcount = ns_msg_count(handle, ns_s_qd); + ancount = ns_msg_count(handle, ns_s_an); + nscount = ns_msg_count(handle, ns_s_ns); + arcount = ns_msg_count(handle, ns_s_ar); + + /* + * Print header fields. + */ + if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX) || rcode) + fprintf(file, + ";; ->>HEADER<<- opcode: %s, status: %s, id: %d\n", + _res_opcodes[opcode], _res_resultcodes[rcode], id); + if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX)) + putc(';', file); + if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD2)) { + fprintf(file, "; flags:"); + if (ns_msg_getflag(handle, ns_f_qr)) + fprintf(file, " qr"); + if (ns_msg_getflag(handle, ns_f_aa)) + fprintf(file, " aa"); + if (ns_msg_getflag(handle, ns_f_tc)) + fprintf(file, " tc"); + if (ns_msg_getflag(handle, ns_f_rd)) + fprintf(file, " rd"); + if (ns_msg_getflag(handle, ns_f_ra)) + fprintf(file, " ra"); + if (ns_msg_getflag(handle, ns_f_z)) + fprintf(file, " ??"); + if (ns_msg_getflag(handle, ns_f_ad)) + fprintf(file, " ad"); + if (ns_msg_getflag(handle, ns_f_cd)) + fprintf(file, " cd"); + } + if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD1)) { + fprintf(file, "; %s: %d", + p_section(ns_s_qd, opcode), qdcount); + fprintf(file, ", %s: %d", + p_section(ns_s_an, opcode), ancount); + fprintf(file, ", %s: %d", + p_section(ns_s_ns, opcode), nscount); + fprintf(file, ", %s: %d", + p_section(ns_s_ar, opcode), arcount); + } + if ((!_res.pfcode) || (_res.pfcode & + (RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) { + putc('\n',file); + } + /* + * Print the various sections. + */ + do_section(&handle, ns_s_qd, RES_PRF_QUES, file); + do_section(&handle, ns_s_an, RES_PRF_ANS, file); + do_section(&handle, ns_s_ns, RES_PRF_AUTH, file); + do_section(&handle, ns_s_ar, RES_PRF_ADD, file); + if (qdcount == 0 && ancount == 0 && + nscount == 0 && arcount == 0) + putc('\n', file); +} + +const u_char * +p_cdnname(const u_char *cp, const u_char *msg, int len, FILE *file) { + char name[MAXDNAME]; + int n; + + if ((n = dn_expand(msg, msg + len, cp, name, sizeof name)) < 0) + return (NULL); + if (name[0] == '\0') + putc('.', file); + else + fputs(name, file); + return (cp + n); +} + +const u_char * +p_cdname(const u_char *cp, const u_char *msg, FILE *file) { + return (p_cdnname(cp, msg, PACKETSZ, file)); +} + +/* Return a fully-qualified domain name from a compressed name (with + length supplied). */ + +const u_char * +p_fqnname(cp, msg, msglen, name, namelen) + const u_char *cp, *msg; + int msglen; + char *name; + int namelen; +{ + int n, newlen; + + if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0) + return (NULL); + newlen = strlen(name); + if (newlen == 0 || name[newlen - 1] != '.') { + if (newlen + 1 >= namelen) /* Lack space for final dot */ + return (NULL); + else + strcpy(name + newlen, "."); + } + return (cp + n); +} + +/* XXX: the rest of these functions need to become length-limited, too. */ + +const u_char * +p_fqname(const u_char *cp, const u_char *msg, FILE *file) { + char name[MAXDNAME]; + const u_char *n; + + n = p_fqnname(cp, msg, MAXCDNAME, name, sizeof name); + if (n == NULL) + return (NULL); + fputs(name, file); + return (n); +} + +/* + * Names of RR classes and qclasses. Classes and qclasses are the same, except + * that C_ANY is a qclass but not a class. (You can ask for records of class + * C_ANY, but you can't have any records of that class in the database.) + */ +const struct res_sym __p_class_syms[] = { + {C_IN, "IN"}, + {C_CHAOS, "CHAOS"}, + {C_HS, "HS"}, + {C_HS, "HESIOD"}, + {C_ANY, "ANY"}, + {C_NONE, "NONE"}, + {C_IN, (char *)0} +}; + +/* + * Names of message sections. + */ +const struct res_sym __p_default_section_syms[] = { + {ns_s_qd, "QUERY"}, + {ns_s_an, "ANSWER"}, + {ns_s_ns, "AUTHORITY"}, + {ns_s_ar, "ADDITIONAL"}, + {0, (char *)0} +}; + +const struct res_sym __p_update_section_syms[] = { + {S_ZONE, "ZONE"}, + {S_PREREQ, "PREREQUISITE"}, + {S_UPDATE, "UPDATE"}, + {S_ADDT, "ADDITIONAL"}, + {0, (char *)0} +}; + +/* + * Names of RR types and qtypes. Types and qtypes are the same, except + * that T_ANY is a qtype but not a type. (You can ask for records of type + * T_ANY, but you can't have any records of that type in the database.) + */ +const struct res_sym __p_type_syms[] = { + {T_A, "A", "address"}, + {T_NS, "NS", "name server"}, + {T_MD, "MD", "mail destination (deprecated)"}, + {T_MF, "MF", "mail forwarder (deprecated)"}, + {T_CNAME, "CNAME", "canonical name"}, + {T_SOA, "SOA", "start of authority"}, + {T_MB, "MB", "mailbox"}, + {T_MG, "MG", "mail group member"}, + {T_MR, "MR", "mail rename"}, + {T_NULL, "NULL", "null"}, + {T_WKS, "WKS", "well-known service (deprecated)"}, + {T_PTR, "PTR", "domain name pointer"}, + {T_HINFO, "HINFO", "host information"}, + {T_MINFO, "MINFO", "mailbox information"}, + {T_MX, "MX", "mail exchanger"}, + {T_TXT, "TXT", "text"}, + {T_RP, "RP", "responsible person"}, + {T_AFSDB, "AFSDB", "DCE or AFS server"}, + {T_X25, "X25", "X25 address"}, + {T_ISDN, "ISDN", "ISDN address"}, + {T_RT, "RT", "router"}, + {T_NSAP, "NSAP", "nsap address"}, + {T_NSAP_PTR, "NSAP_PTR", "domain name pointer"}, + {T_SIG, "SIG", "signature"}, + {T_KEY, "KEY", "key"}, + {T_PX, "PX", "mapping information"}, + {T_GPOS, "GPOS", "geographical position (withdrawn)"}, + {T_AAAA, "AAAA", "IPv6 address"}, + {T_LOC, "LOC", "location"}, + {T_NXT, "NXT", "next valid name (unimplemented)"}, + {T_EID, "EID", "endpoint identifier (unimplemented)"}, + {T_NIMLOC, "NIMLOC", "NIMROD locator (unimplemented)"}, + {T_SRV, "SRV", "server selection"}, + {T_ATMA, "ATMA", "ATM address (unimplemented)"}, + {T_IXFR, "IXFR", "incremental zone transfer"}, + {T_AXFR, "AXFR", "zone transfer"}, + {T_MAILB, "MAILB", "mailbox-related data (deprecated)"}, + {T_MAILA, "MAILA", "mail agent (deprecated)"}, + {T_NAPTR, "NAPTR", "URN Naming Authority"}, + {T_ANY, "ANY", "\"any\""}, + {0, NULL, NULL} +}; + +int +sym_ston(const struct res_sym *syms, const char *name, int *success) { + for ((void)NULL; syms->name != 0; syms++) { + if (strcasecmp (name, syms->name) == 0) { + if (success) + *success = 1; + return (syms->number); + } + } + if (success) + *success = 0; + return (syms->number); /* The default value. */ +} + +const char * +sym_ntos(const struct res_sym *syms, int number, int *success) { + static char unname[20]; + + for ((void)NULL; syms->name != 0; syms++) { + if (number == syms->number) { + if (success) + *success = 1; + return (syms->name); + } + } + + sprintf(unname, "%d", number); + if (success) + *success = 0; + return (unname); +} + +const char * +sym_ntop(const struct res_sym *syms, int number, int *success) { + static char unname[20]; + + for ((void)NULL; syms->name != 0; syms++) { + if (number == syms->number) { + if (success) + *success = 1; + return (syms->humanname); + } + } + sprintf(unname, "%d", number); + if (success) + *success = 0; + return (unname); +} + +/* + * Return a string for the type. + */ +const char * +p_type(int type) { + return (sym_ntos(__p_type_syms, type, (int *)0)); +} + +/* + * Return a string for the type. + */ +const char * +p_section(int section, int opcode) { + const struct res_sym *symbols; + + switch (opcode) { + case ns_o_update: + symbols = __p_update_section_syms; + break; + default: + symbols = __p_default_section_syms; + break; + } + return (sym_ntos(symbols, section, (int *)0)); +} + +/* + * Return a mnemonic for class. + */ +const char * +p_class(int class) { + return (sym_ntos(__p_class_syms, class, (int *)0)); +} + +/* + * Return a mnemonic for an option + */ +const char * +p_option(u_long option) { + static char nbuf[40]; + + switch (option) { + case RES_INIT: return "init"; + case RES_DEBUG: return "debug"; + case RES_AAONLY: return "aaonly(unimpl)"; + case RES_USEVC: return "usevc"; + case RES_PRIMARY: return "primry(unimpl)"; + case RES_IGNTC: return "igntc"; + case RES_RECURSE: return "recurs"; + case RES_DEFNAMES: return "defnam"; + case RES_STAYOPEN: return "styopn"; + case RES_DNSRCH: return "dnsrch"; + case RES_INSECURE1: return "insecure1"; + case RES_INSECURE2: return "insecure2"; + case RES_NOALIASES: return "noaliases"; + case RES_USE_INET6: return "inet6"; + case RES_NOTLDQUERY: return "no-tld-query"; + case RES_USE_EDNS0: return "edns0"; + default: sprintf(nbuf, "?0x%lx?", (u_long)option); + return (nbuf); + } +} + +/* + * Return a mnemonic for a time to live. + */ +const char * +p_time(u_int32_t value) { + static char nbuf[40]; + + if (ns_format_ttl(value, nbuf, sizeof nbuf) < 0) + sprintf(nbuf, "%u", value); + return (nbuf); +} + + +/* + * routines to convert between on-the-wire RR format and zone file format. + * Does not contain conversion to/from decimal degrees; divide or multiply + * by 60*60*1000 for that. + */ + +static unsigned int poweroften[10] = {1, 10, 100, 1000, 10000, 100000, + 1000000,10000000,100000000,1000000000}; + +/* takes an XeY precision/size value, returns a string representation. */ +static const char * +precsize_ntoa(prec) + u_int8_t prec; +{ + static char retbuf[sizeof "90000000.00"]; + unsigned long val; + int mantissa, exponent; + + mantissa = (int)((prec >> 4) & 0x0f) % 10; + exponent = (int)((prec >> 0) & 0x0f) % 10; + + val = mantissa * poweroften[exponent]; + + (void) sprintf(retbuf, "%ld.%.2ld", val/100, val%100); + return (retbuf); +} + +/* converts ascii size/precision X * 10**Y(cm) to 0xXY. moves pointer. */ +static u_int8_t +precsize_aton(strptr) + char **strptr; +{ + unsigned int mval = 0, cmval = 0; + u_int8_t retval = 0; + char *cp; + int exponent; + int mantissa; + + cp = *strptr; + + while (isdigit((unsigned char)*cp)) + mval = mval * 10 + (*cp++ - '0'); + + if (*cp == '.') { /* centimeters */ + cp++; + if (isdigit((unsigned char)*cp)) { + cmval = (*cp++ - '0') * 10; + if (isdigit((unsigned char)*cp)) { + cmval += (*cp++ - '0'); + } + } + } + cmval = (mval * 100) + cmval; + + for (exponent = 0; exponent < 9; exponent++) + if (cmval < poweroften[exponent+1]) + break; + + mantissa = cmval / poweroften[exponent]; + if (mantissa > 9) + mantissa = 9; + + retval = (mantissa << 4) | exponent; + + *strptr = cp; + + return (retval); +} + +/* converts ascii lat/lon to unsigned encoded 32-bit number. moves pointer. */ +static u_int32_t +latlon2ul(latlonstrptr,which) + char **latlonstrptr; + int *which; +{ + char *cp; + u_int32_t retval; + int deg = 0, min = 0, secs = 0, secsfrac = 0; + + cp = *latlonstrptr; + + while (isdigit((unsigned char)*cp)) + deg = deg * 10 + (*cp++ - '0'); + + while (isspace((unsigned char)*cp)) + cp++; + + if (!(isdigit((unsigned char)*cp))) + goto fndhemi; + + while (isdigit((unsigned char)*cp)) + min = min * 10 + (*cp++ - '0'); + + while (isspace((unsigned char)*cp)) + cp++; + + if (!(isdigit((unsigned char)*cp))) + goto fndhemi; + + while (isdigit((unsigned char)*cp)) + secs = secs * 10 + (*cp++ - '0'); + + if (*cp == '.') { /* decimal seconds */ + cp++; + if (isdigit((unsigned char)*cp)) { + secsfrac = (*cp++ - '0') * 100; + if (isdigit((unsigned char)*cp)) { + secsfrac += (*cp++ - '0') * 10; + if (isdigit((unsigned char)*cp)) { + secsfrac += (*cp++ - '0'); + } + } + } + } + + while (!isspace((unsigned char)*cp)) /* if any trailing garbage */ + cp++; + + while (isspace((unsigned char)*cp)) + cp++; + + fndhemi: + switch (*cp) { + case 'N': case 'n': + case 'E': case 'e': + retval = ((unsigned)1<<31) + + (((((deg * 60) + min) * 60) + secs) * 1000) + + secsfrac; + break; + case 'S': case 's': + case 'W': case 'w': + retval = ((unsigned)1<<31) + - (((((deg * 60) + min) * 60) + secs) * 1000) + - secsfrac; + break; + default: + retval = 0; /* invalid value -- indicates error */ + break; + } + + switch (*cp) { + case 'N': case 'n': + case 'S': case 's': + *which = 1; /* latitude */ + break; + case 'E': case 'e': + case 'W': case 'w': + *which = 2; /* longitude */ + break; + default: + *which = 0; /* error */ + break; + } + + cp++; /* skip the hemisphere */ + + while (!isspace((unsigned char)*cp)) /* if any trailing garbage */ + cp++; + + while (isspace((unsigned char)*cp)) /* move to next field */ + cp++; + + *latlonstrptr = cp; + + return (retval); +} + +/* converts a zone file representation in a string to an RDATA on-the-wire + * representation. */ +int +loc_aton(ascii, binary) + const char *ascii; + u_char *binary; +{ + const char *cp, *maxcp; + u_char *bcp; + + u_int32_t latit = 0, longit = 0, alt = 0; + u_int32_t lltemp1 = 0, lltemp2 = 0; + int altmeters = 0, altfrac = 0, altsign = 1; + u_int8_t hp = 0x16; /* default = 1e6 cm = 10000.00m = 10km */ + u_int8_t vp = 0x13; /* default = 1e3 cm = 10.00m */ + u_int8_t siz = 0x12; /* default = 1e2 cm = 1.00m */ + int which1 = 0, which2 = 0; + + cp = ascii; + maxcp = cp + strlen(ascii); + + lltemp1 = latlon2ul(&cp, &which1); + + lltemp2 = latlon2ul(&cp, &which2); + + switch (which1 + which2) { + case 3: /* 1 + 2, the only valid combination */ + if ((which1 == 1) && (which2 == 2)) { /* normal case */ + latit = lltemp1; + longit = lltemp2; + } else if ((which1 == 2) && (which2 == 1)) { /* reversed */ + longit = lltemp1; + latit = lltemp2; + } else { /* some kind of brokenness */ + return (0); + } + break; + default: /* we didn't get one of each */ + return (0); + } + + /* altitude */ + if (*cp == '-') { + altsign = -1; + cp++; + } + + if (*cp == '+') + cp++; + + while (isdigit((unsigned char)*cp)) + altmeters = altmeters * 10 + (*cp++ - '0'); + + if (*cp == '.') { /* decimal meters */ + cp++; + if (isdigit((unsigned char)*cp)) { + altfrac = (*cp++ - '0') * 10; + if (isdigit((unsigned char)*cp)) { + altfrac += (*cp++ - '0'); + } + } + } + + alt = (10000000 + (altsign * (altmeters * 100 + altfrac))); + + while (!isspace((unsigned char)*cp) && (cp < maxcp)) /* if trailing garbage or m */ + cp++; + + while (isspace((unsigned char)*cp) && (cp < maxcp)) + cp++; + + if (cp >= maxcp) + goto defaults; + + siz = precsize_aton(&cp); + + while (!isspace((unsigned char)*cp) && (cp < maxcp)) /* if trailing garbage or m */ + cp++; + + while (isspace((unsigned char)*cp) && (cp < maxcp)) + cp++; + + if (cp >= maxcp) + goto defaults; + + hp = precsize_aton(&cp); + + while (!isspace((unsigned char)*cp) && (cp < maxcp)) /* if trailing garbage or m */ + cp++; + + while (isspace((unsigned char)*cp) && (cp < maxcp)) + cp++; + + if (cp >= maxcp) + goto defaults; + + vp = precsize_aton(&cp); + + defaults: + + bcp = binary; + *bcp++ = (u_int8_t) 0; /* version byte */ + *bcp++ = siz; + *bcp++ = hp; + *bcp++ = vp; + PUTLONG(latit,bcp); + PUTLONG(longit,bcp); + PUTLONG(alt,bcp); + + return (16); /* size of RR in octets */ +} + +/* takes an on-the-wire LOC RR and formats it in a human readable format. */ +const char * +loc_ntoa(binary, ascii) + const u_char *binary; + char *ascii; +{ + static char *error = "?"; + const u_char *cp = binary; + + int latdeg, latmin, latsec, latsecfrac; + int longdeg, longmin, longsec, longsecfrac; + char northsouth, eastwest; + int altmeters, altfrac, altsign; + + const u_int32_t referencealt = 100000 * 100; + + int32_t latval, longval, altval; + u_int32_t templ; + u_int8_t sizeval, hpval, vpval, versionval; + + char *sizestr, *hpstr, *vpstr; + + size_t len; + + versionval = *cp++; + + if (versionval) { + (void) sprintf(ascii, "; error: unknown LOC RR version"); + return (ascii); + } + + sizeval = *cp++; + + hpval = *cp++; + vpval = *cp++; + + GETLONG(templ, cp); + latval = (templ - ((unsigned)1<<31)); + + GETLONG(templ, cp); + longval = (templ - ((unsigned)1<<31)); + + GETLONG(templ, cp); + if (templ < referencealt) { /* below WGS 84 spheroid */ + altval = referencealt - templ; + altsign = -1; + } else { + altval = templ - referencealt; + altsign = 1; + } + + if (latval < 0) { + northsouth = 'S'; + latval = -latval; + } else + northsouth = 'N'; + + latsecfrac = latval % 1000; + latval = latval / 1000; + latsec = latval % 60; + latval = latval / 60; + latmin = latval % 60; + latval = latval / 60; + latdeg = latval; + + if (longval < 0) { + eastwest = 'W'; + longval = -longval; + } else + eastwest = 'E'; + + longsecfrac = longval % 1000; + longval = longval / 1000; + longsec = longval % 60; + longval = longval / 60; + longmin = longval % 60; + longval = longval / 60; + longdeg = longval; + + altfrac = altval % 100; + altmeters = (altval / 100) * altsign; + + len = strlen (precsize_ntoa(sizeval)) + 1; + if ((sizestr = malloc(len)) == NULL) + sizestr = error; + else + memcpy (sizestr, precsize_ntoa(sizeval), len); + len = strlen (precsize_ntoa(hpval)) + 1; + if ((hpstr = malloc (len)) == NULL) + hpstr = error; + else + memcpy (hpstr, precsize_ntoa(hpval), len); + len = strlen (precsize_ntoa(vpval)) + 1; + if ((vpstr = malloc (len)) == NULL) + vpstr = error; + else + memcpy (vpstr, precsize_ntoa(vpval), len); + + sprintf(ascii, + "%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %d.%.2dm %sm %sm %sm", + latdeg, latmin, latsec, latsecfrac, northsouth, + longdeg, longmin, longsec, longsecfrac, eastwest, + altmeters, altfrac, sizestr, hpstr, vpstr); + + if (sizestr != error) + free(sizestr); + if (hpstr != error) + free(hpstr); + if (vpstr != error) + free(vpstr); + + return (ascii); +} + + +/* Return the number of DNS hierarchy levels in the name. */ +int +dn_count_labels(const char *name) { + int i, len, count; + + len = strlen(name); + for (i = 0, count = 0; i < len; i++) { + /* XXX need to check for \. or use named's nlabels(). */ + if (name[i] == '.') + count++; + } + + /* don't count initial wildcard */ + if (name[0] == '*') + if (count) + count--; + + /* don't count the null label for root. */ + /* if terminating '.' not found, must adjust */ + /* count to include last label */ + if (len > 0 && name[len-1] != '.') + count++; + return (count); +} + + +/* + * Make dates expressed in seconds-since-Jan-1-1970 easy to read. + * SIG records are required to be printed like this, by the Secure DNS RFC. + */ +char * +p_secstodate (u_long secs) { + static char output[15]; /* YYYYMMDDHHMMSS and null */ + time_t clock = secs; + struct tm *time; + + time = gmtime(&clock); + time->tm_year += 1900; + time->tm_mon += 1; + sprintf(output, "%04d%02d%02d%02d%02d%02d", + time->tm_year, time->tm_mon, time->tm_mday, + time->tm_hour, time->tm_min, time->tm_sec); + return (output); +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <resolv.h>. + */ +#undef fp_resstat +__weak_reference(__fp_resstat, fp_resstat); +#undef p_query +__weak_reference(__p_query, p_query); +#undef p_fqnname +__weak_reference(__p_fqnname, p_fqnname); +#undef sym_ston +__weak_reference(__sym_ston, sym_ston); +#undef sym_ntos +__weak_reference(__sym_ntos, sym_ntos); +#undef sym_ntop +__weak_reference(__sym_ntop, sym_ntop); +#undef dn_count_labels +__weak_reference(__dn_count_labels, dn_count_labels); +#undef p_secstodate +__weak_reference(__p_secstodate, p_secstodate); diff --git a/newlib/libc/sys/linux/net/res_init.c b/newlib/libc/sys/linux/net/res_init.c new file mode 100644 index 000000000..21f2696cd --- /dev/null +++ b/newlib/libc/sys/linux/net/res_init.c @@ -0,0 +1,585 @@ +/* + * Copyright (c) 1985, 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +/* + * Portions Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)res_init.c 8.1 (Berkeley) 6/7/93"; +static char orig_rcsid[] = "From: Id: res_init.c,v 8.7 1996/11/18 09:10:04 vixie Exp $"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> +#include <machine/endian.h> + +#include <sys/param.h> +#include <sys/socket.h> +#include <sys/time.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> +#include <ctype.h> +#include <resolv.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <netdb.h> + +#include "res_config.h" + +static void res_setoptions(char *, char *); + +#ifdef RESOLVSORT +static const char sort_mask[] = "/&"; +#define ISSORTMASK(ch) (strchr(sort_mask, ch) != NULL) +static u_int32_t net_mask(struct in_addr); +#endif + +#if !defined(isascii) /* XXX - could be a function */ +# define isascii(c) (!(c & 0200)) +#endif + +/* + * Resolver state default settings. + */ + +struct __res_state _res +# if defined(__BIND_RES_TEXT) + = { RES_TIMEOUT, } /* Motorola, et al. */ +# endif + ; + +struct __res_state_ext _res_ext; + +/* + * Set up default settings. If the configuration file exist, the values + * there will have precedence. Otherwise, the server address is set to + * INADDR_ANY and the default domain name comes from the gethostname(). + * + * An interrim version of this code (BIND 4.9, pre-4.4BSD) used 127.0.0.1 + * rather than INADDR_ANY ("0.0.0.0") as the default name server address + * since it was noted that INADDR_ANY actually meant ``the first interface + * you "ifconfig"'d at boot time'' and if this was a SLIP or PPP interface, + * it had to be "up" in order for you to reach your own name server. It + * was later decided that since the recommended practice is to always + * install local static routes through 127.0.0.1 for all your network + * interfaces, that we could solve this problem without a code change. + * + * The configuration file should always be used, since it is the only way + * to specify a default domain. If you are running a server on your local + * machine, you should say "nameserver 0.0.0.0" or "nameserver 127.0.0.1" + * in the configuration file. + * + * Return 0 if completes successfully, -1 on error + */ +int +res_init() +{ + FILE *fp; + char *cp, **pp; + int n; + char buf[MAXDNAME]; + int nserv = 0; /* number of nameserver records read from file */ + int haveenv = 0; + int havesearch = 0; +#ifdef RESOLVSORT + int nsort = 0; + char *net; +#endif +#ifndef RFC1535 + int dots; +#endif + int sin_len; + + /* + * These three fields used to be statically initialized. This made + * it hard to use this code in a shared library. It is necessary, + * now that we're doing dynamic initialization here, that we preserve + * the old semantics: if an application modifies one of these three + * fields of _res before res_init() is called, res_init() will not + * alter them. Of course, if an application is setting them to + * _zero_ before calling res_init(), hoping to override what used + * to be the static default, we can't detect it and unexpected results + * will follow. Zero for any of these fields would make no sense, + * so one can safely assume that the applications were already getting + * unexpected results. + * + * _res.options is tricky since some apps were known to diddle the bits + * before res_init() was first called. We can't replicate that semantic + * with dynamic initialization (they may have turned bits off that are + * set in RES_DEFAULT). Our solution is to declare such applications + * "broken". They could fool us by setting RES_INIT but none do (yet). + */ + if (!_res.retrans) + _res.retrans = RES_TIMEOUT; + if (!_res.retry) + _res.retry = 4; + if (!(_res.options & RES_INIT)) + _res.options = RES_DEFAULT; + + /* + * This one used to initialize implicitly to zero, so unless the app + * has set it to something in particular, we can randomize it now. + */ + if (!_res.id) + _res.id = res_randomid(); + +#ifdef USELOOPBACK + _res.nsaddr.sin_addr = inet_makeaddr(IN_LOOPBACKNET, 1); +#else + _res.nsaddr.sin_addr.s_addr = INADDR_ANY; +#endif + _res.nsaddr.sin_family = AF_INET; + _res.nsaddr.sin_port = htons(NAMESERVER_PORT); + sin_len = sizeof(struct sockaddr_in); + if (sizeof(_res_ext.nsaddr) >= sin_len) + memcpy(&_res_ext.nsaddr, &_res.nsaddr, sin_len); + _res.nscount = 1; + _res.ndots = 1; + _res.pfcode = 0; + + /* Allow user to override the local domain definition */ + if (issetugid() == 0 && (cp = getenv("LOCALDOMAIN")) != NULL) { + (void)strncpy(_res.defdname, cp, sizeof(_res.defdname) - 1); + _res.defdname[sizeof(_res.defdname) - 1] = '\0'; + haveenv++; + + /* + * Set search list to be blank-separated strings + * from rest of env value. Permits users of LOCALDOMAIN + * to still have a search list, and anyone to set the + * one that they want to use as an individual (even more + * important now that the rfc1535 stuff restricts searches) + */ + cp = _res.defdname; + pp = _res.dnsrch; + *pp++ = cp; + for (n = 0; *cp && pp < _res.dnsrch + MAXDNSRCH; cp++) { + if (*cp == '\n') /* silly backwards compat */ + break; + else if (*cp == ' ' || *cp == '\t') { + *cp = 0; + n = 1; + } else if (n) { + *pp++ = cp; + n = 0; + havesearch = 1; + } + } + /* null terminate last domain if there are excess */ + while (*cp != '\0' && *cp != ' ' && *cp != '\t' && *cp != '\n') + cp++; + *cp = '\0'; + *pp++ = 0; + } + +#define MATCH(line, name) \ + (!strncmp(line, name, sizeof(name) - 1) && \ + (line[sizeof(name) - 1] == ' ' || \ + line[sizeof(name) - 1] == '\t')) + + if ((fp = fopen(_PATH_RESCONF, "r")) != NULL) { + /* read the config file */ + while (fgets(buf, sizeof(buf), fp) != NULL) { + /* skip comments */ + if (*buf == ';' || *buf == '#') + continue; + /* read default domain name */ + if (MATCH(buf, "domain")) { + if (haveenv) /* skip if have from environ */ + continue; + cp = buf + sizeof("domain") - 1; + while (*cp == ' ' || *cp == '\t') + cp++; + if ((*cp == '\0') || (*cp == '\n')) + continue; + strncpy(_res.defdname, cp, sizeof(_res.defdname) - 1); + _res.defdname[sizeof(_res.defdname) - 1] = '\0'; + if ((cp = strpbrk(_res.defdname, " \t\n")) != NULL) + *cp = '\0'; + havesearch = 0; + continue; + } + /* set search list */ + if (MATCH(buf, "search")) { + if (haveenv) /* skip if have from environ */ + continue; + cp = buf + sizeof("search") - 1; + while (*cp == ' ' || *cp == '\t') + cp++; + if ((*cp == '\0') || (*cp == '\n')) + continue; + strncpy(_res.defdname, cp, sizeof(_res.defdname) - 1); + _res.defdname[sizeof(_res.defdname) - 1] = '\0'; + if ((cp = strchr(_res.defdname, '\n')) != NULL) + *cp = '\0'; + /* + * Set search list to be blank-separated strings + * on rest of line. + */ + cp = _res.defdname; + pp = _res.dnsrch; + *pp++ = cp; + for (n = 0; *cp && pp < _res.dnsrch + MAXDNSRCH; cp++) { + if (*cp == ' ' || *cp == '\t') { + *cp = 0; + n = 1; + } else if (n) { + *pp++ = cp; + n = 0; + } + } + /* null terminate last domain if there are excess */ + while (*cp != '\0' && *cp != ' ' && *cp != '\t') + cp++; + *cp = '\0'; + *pp++ = 0; + havesearch = 1; + continue; + } + /* read nameservers to query */ + if (MATCH(buf, "nameserver") && nserv < MAXNS) { + char *q; + struct addrinfo hints, *res; + char pbuf[NI_MAXSERV]; + + cp = buf + sizeof("nameserver") - 1; + while (*cp == ' ' || *cp == '\t') + cp++; + if ((*cp == '\0') || (*cp == '\n')) + continue; + for (q = cp; *q; q++) { + if (isspace(*q)) { + *q = '\0'; + break; + } + } + memset(&hints, 0, sizeof(hints)); + hints.ai_flags = AI_NUMERICHOST; + hints.ai_socktype = SOCK_DGRAM; + snprintf(pbuf, sizeof(pbuf), "%d", NAMESERVER_PORT); + if (getaddrinfo(cp, pbuf, &hints, &res) == 0 && + res->ai_next == NULL) { + if (res->ai_addrlen <= sizeof(_res_ext.nsaddr_list[nserv])) { + memcpy(&_res_ext.nsaddr_list[nserv], res->ai_addr, + res->ai_addrlen); + } else { + memset(&_res_ext.nsaddr_list[nserv], 0, + sizeof(_res_ext.nsaddr_list[nserv])); + } + if (res->ai_addrlen <= sizeof(_res.nsaddr_list[nserv])) { + memcpy(&_res.nsaddr_list[nserv], res->ai_addr, + res->ai_addrlen); + } else { + memset(&_res.nsaddr_list[nserv], 0, + sizeof(_res.nsaddr_list[nserv])); + } + nserv++; + } + if (res) + freeaddrinfo(res); + continue; + } +#ifdef RESOLVSORT + if (MATCH(buf, "sortlist")) { + struct in_addr a; + struct in6_addr a6; + int m, i; + u_char *u; + + cp = buf + sizeof("sortlist") - 1; + while (nsort < MAXRESOLVSORT) { + while (*cp == ' ' || *cp == '\t') + cp++; + if (*cp == '\0' || *cp == '\n' || *cp == ';') + break; + net = cp; + while (*cp && !ISSORTMASK(*cp) && *cp != ';' && + isascii(*cp) && !isspace(*cp)) + cp++; + n = *cp; + *cp = 0; + if (inet_aton(net, &a)) { + _res.sort_list[nsort].addr = a; + if (ISSORTMASK(n)) { + *cp++ = n; + net = cp; + while (*cp && *cp != ';' && + isascii(*cp) && !isspace(*cp)) + cp++; + n = *cp; + *cp = 0; + if (inet_aton(net, &a)) { + _res.sort_list[nsort].mask = a.s_addr; + } else { + _res.sort_list[nsort].mask = + net_mask(_res.sort_list[nsort].addr); + } + } else { + _res.sort_list[nsort].mask = + net_mask(_res.sort_list[nsort].addr); + } + _res_ext.sort_list[nsort].af = AF_INET; + _res_ext.sort_list[nsort].addr.ina = + _res.sort_list[nsort].addr; + _res_ext.sort_list[nsort].mask.ina.s_addr = + _res.sort_list[nsort].mask; + nsort++; + } + else if (inet_pton(AF_INET6, net, &a6) == 1) { + + _res_ext.sort_list[nsort].af = AF_INET6; + _res_ext.sort_list[nsort].addr.in6a = a6; + u = (u_char *)&_res_ext.sort_list[nsort].mask.in6a; + *cp++ = n; + net = cp; + while (*cp && *cp != ';' && + isascii(*cp) && !isspace(*cp)) + cp++; + m = n; + n = *cp; + *cp = 0; + switch (m) { + case '/': + m = atoi(net); + break; + case '&': + if (inet_pton(AF_INET6, net, u) == 1) { + m = -1; + break; + } + /*FALLTHROUGH*/ + default: + m = sizeof(struct in6_addr) * NBBY; + break; + } + if (m >= 0) { + for (i = 0; i < sizeof(struct in6_addr); i++) { + if (m <= 0) { + *u = 0; + } else { + m -= NBBY; + *u = (u_char)~0; + if (m < 0) + *u <<= -m; + } + u++; + } + } + _res.sort_list[nsort].addr.s_addr = + (u_int32_t)0xffffffff; + _res.sort_list[nsort].mask = (u_int32_t)0xffffffff; + nsort++; + } + *cp = n; + } + continue; + } +#endif + if (MATCH(buf, "options")) { + res_setoptions(buf + sizeof("options") - 1, "conf"); + continue; + } + } + if (nserv > 1) + _res.nscount = nserv; +#ifdef RESOLVSORT + _res.nsort = nsort; +#endif + (void) fclose(fp); + } + if (_res.defdname[0] == 0 && + gethostname(buf, sizeof(_res.defdname) - 1) == 0 && + (cp = strchr(buf, '.')) != NULL) + strcpy(_res.defdname, cp + 1); + + /* find components of local domain that might be searched */ + if (havesearch == 0) { + pp = _res.dnsrch; + *pp++ = _res.defdname; + *pp = NULL; + +#ifndef RFC1535 + dots = 0; + for (cp = _res.defdname; *cp; cp++) + dots += (*cp == '.'); + + cp = _res.defdname; + while (pp < _res.dnsrch + MAXDFLSRCH) { + if (dots < LOCALDOMAINPARTS) + break; + cp = strchr(cp, '.') + 1; /* we know there is one */ + *pp++ = cp; + dots--; + } + *pp = NULL; +#ifdef DEBUG + if (_res.options & RES_DEBUG) { + printf(";; res_init()... default dnsrch list:\n"); + for (pp = _res.dnsrch; *pp; pp++) + printf(";;\t%s\n", *pp); + printf(";;\t..END..\n"); + } +#endif +#endif /* !RFC1535 */ + } + + if (issetugid()) + _res.options |= RES_NOALIASES; + else if ((cp = getenv("RES_OPTIONS")) != NULL) + res_setoptions(cp, "env"); + _res.options |= RES_INIT; + return (0); +} + +static void +res_setoptions(options, source) + char *options, *source; +{ + char *cp = options; + int i; + +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf(";; res_setoptions(\"%s\", \"%s\")...\n", + options, source); +#endif + while (*cp) { + /* skip leading and inner runs of spaces */ + while (*cp == ' ' || *cp == '\t') + cp++; + /* search for and process individual options */ + if (!strncmp(cp, "ndots:", sizeof("ndots:") - 1)) { + i = atoi(cp + sizeof("ndots:") - 1); + if (i <= RES_MAXNDOTS) + _res.ndots = i; + else + _res.ndots = RES_MAXNDOTS; +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf(";;\tndots=%d\n", _res.ndots); +#endif + } else if (!strncmp(cp, "debug", sizeof("debug") - 1)) { +#ifdef DEBUG + if (!(_res.options & RES_DEBUG)) { + printf(";; res_setoptions(\"%s\", \"%s\")..\n", + options, source); + _res.options |= RES_DEBUG; + } + printf(";;\tdebug\n"); +#endif + } else if (!strncmp(cp, "inet6", sizeof("inet6") - 1)) { + _res.options |= RES_USE_INET6; + } else if (!strncmp(cp, "insecure1", sizeof("insecure1") - 1)) { + _res.options |= RES_INSECURE1; + } else if (!strncmp(cp, "insecure2", sizeof("insecure2") - 1)) { + _res.options |= RES_INSECURE2; + } else if (!strncmp(cp, "no_tld_query", sizeof("no_tld_query") - 1)) { + _res.options |= RES_NOTLDQUERY; + } else if (!strncmp(cp, "edns0", sizeof("edns0") - 1)) { + _res.options |= RES_USE_EDNS0; + } else { + /* XXX - print a warning here? */ + } + /* skip to next run of spaces */ + while (*cp && *cp != ' ' && *cp != '\t') + cp++; + } +} + +#ifdef RESOLVSORT +/* XXX - should really support CIDR which means explicit masks always. */ +static u_int32_t +net_mask(in) /* XXX - should really use system's version of this */ + struct in_addr in; +{ + u_int32_t i = ntohl(in.s_addr); + + if (IN_CLASSA(i)) + return (htonl(IN_CLASSA_NET)); + else if (IN_CLASSB(i)) + return (htonl(IN_CLASSB_NET)); + return (htonl(IN_CLASSC_NET)); +} +#endif + +u_int +res_randomid() +{ + struct timeval now; + + gettimeofday(&now, NULL); + return (0xffff & (now.tv_sec ^ now.tv_usec ^ getpid())); +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <resolv.h>. + */ +#undef res_init +__weak_reference(__res_init, res_init); diff --git a/newlib/libc/sys/linux/net/res_mkquery.c b/newlib/libc/sys/linux/net/res_mkquery.c new file mode 100644 index 000000000..0c6cca9c4 --- /dev/null +++ b/newlib/libc/sys/linux/net/res_mkquery.c @@ -0,0 +1,245 @@ +/* + * Copyright (c) 1985, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +/* + * Portions Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)res_mkquery.c 8.1 (Berkeley) 6/4/93"; +static char orig_rcsid[] = "From: Id: res_mkquery.c,v 8.9 1997/04/24 22:22:36 vixie Exp $"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> +#include <machine/endian.h> + +#include <sys/types.h> +#include <sys/param.h> +#include <netinet/in.h> +#include <arpa/nameser.h> +#include <netdb.h> +#include <resolv.h> +#include <stdio.h> +#include <string.h> + +#include "res_config.h" + +/* + * Form all types of queries. + * Returns the size of the result or -1. + */ +int +res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen) + int op; /* opcode of query */ + const char *dname; /* domain name */ + int class, type; /* class and type of query */ + const u_char *data; /* resource record data */ + int datalen; /* length of data */ + const u_char *newrr_in; /* new rr for modify or append */ + u_char *buf; /* buffer to put query */ + int buflen; /* size of buffer */ +{ + HEADER *hp; + u_char *cp; + int n; + u_char *dnptrs[20], **dpp, **lastdnptr; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + h_errno = NETDB_INTERNAL; + return (-1); + } +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf(";; res_mkquery(%d, %s, %d, %d)\n", + op, dname, class, type); +#endif + /* + * Initialize header fields. + */ + if ((buf == NULL) || (buflen < HFIXEDSZ)) + return (-1); + memset(buf, 0, HFIXEDSZ); + hp = (HEADER *) buf; + hp->id = htons(++_res.id); + hp->opcode = op; + hp->rd = (_res.options & RES_RECURSE) != 0; + hp->rcode = NOERROR; + cp = buf + HFIXEDSZ; + buflen -= HFIXEDSZ; + dpp = dnptrs; + *dpp++ = buf; + *dpp++ = NULL; + lastdnptr = dnptrs + sizeof dnptrs / sizeof dnptrs[0]; + /* + * perform opcode specific processing + */ + switch (op) { + case QUERY: /*FALLTHROUGH*/ + case NS_NOTIFY_OP: + if ((buflen -= QFIXEDSZ) < 0) + return (-1); + if ((n = dn_comp(dname, cp, buflen, dnptrs, lastdnptr)) < 0) + return (-1); + cp += n; + buflen -= n; + __putshort(type, cp); + cp += INT16SZ; + __putshort(class, cp); + cp += INT16SZ; + hp->qdcount = htons(1); + if (op == QUERY || data == NULL) + break; + /* + * Make an additional record for completion domain. + */ + buflen -= RRFIXEDSZ; + n = dn_comp((char *)data, cp, buflen, dnptrs, lastdnptr); + if (n < 0) + return (-1); + cp += n; + buflen -= n; + __putshort(T_NULL, cp); + cp += INT16SZ; + __putshort(class, cp); + cp += INT16SZ; + __putlong(0, cp); + cp += INT32SZ; + __putshort(0, cp); + cp += INT16SZ; + hp->arcount = htons(1); + break; + + case IQUERY: + /* + * Initialize answer section + */ + if (buflen < 1 + RRFIXEDSZ + datalen) + return (-1); + *cp++ = '\0'; /* no domain name */ + __putshort(type, cp); + cp += INT16SZ; + __putshort(class, cp); + cp += INT16SZ; + __putlong(0, cp); + cp += INT32SZ; + __putshort(datalen, cp); + cp += INT16SZ; + if (datalen) { + memcpy(cp, data, datalen); + cp += datalen; + } + hp->ancount = htons(1); + break; + + default: + return (-1); + } + return (cp - buf); +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <resolv.h>. + */ +#undef res_mkquery +__weak_reference(__res_mkquery, res_mkquery); + +/* attach OPT pseudo-RR, as documented in RFC2671 (EDNS0). */ +int +res_opt(n0, buf, buflen, anslen) + int n0; + u_char *buf; /* buffer to put query */ + int buflen; /* size of buffer */ + int anslen; /* answer buffer length */ +{ + HEADER *hp; + u_char *cp; + + hp = (HEADER *) buf; + cp = buf + n0; + buflen -= n0; + + if (buflen < 1 + RRFIXEDSZ) + return -1; + + *cp++ = 0; /* "." */ + buflen--; + + __putshort(T_OPT, cp); /* TYPE */ + cp += INT16SZ; + __putshort(anslen & 0xffff, cp); /* CLASS = UDP payload size */ + cp += INT16SZ; + *cp++ = NOERROR; /* extended RCODE */ + *cp++ = 0; /* EDNS version */ + __putshort(0, cp); /* MBZ */ + cp += INT16SZ; + __putshort(0, cp); /* RDLEN */ + cp += INT16SZ; + hp->arcount = htons(ntohs(hp->arcount) + 1); + buflen -= RRFIXEDSZ; + + return cp - buf; +} diff --git a/newlib/libc/sys/linux/net/res_mkupdate.c b/newlib/libc/sys/linux/net/res_mkupdate.c new file mode 100644 index 000000000..4e21fe8cf --- /dev/null +++ b/newlib/libc/sys/linux/net/res_mkupdate.c @@ -0,0 +1,412 @@ +/* + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +/* + * Based on the Dynamic DNS reference implementation by Viraj Bais + * <viraj_bais@ccm.fm.intel.com> + */ + +#include <sys/cdefs.h> +#include <sys/types.h> +#include <machine/endian.h> + +#include <sys/types.h> +#include <sys/param.h> + +#include <netinet/in.h> +#include <arpa/nameser.h> +#include <arpa/inet.h> + +#include <limits.h> +#include <netdb.h> +#include <resolv.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <ctype.h> + +#include "res_config.h" + +static int getnum_str(u_char **, u_char *); +static int getword_str(char *, int, u_char **, u_char *); + +#define ShrinkBuffer(x) if ((buflen -= x) < 0) return (-2); + +/* + * Form update packets. + * Returns the size of the resulting packet if no error + * On error, + * returns -1 if error in reading a word/number in rdata + * portion for update packets + * -2 if length of buffer passed is insufficient + * -3 if zone section is not the first section in + * the linked list, or section order has a problem + * -4 on a number overflow + * -5 unknown operation or no records + */ +int +res_mkupdate(ns_updrec *rrecp_in, u_char *buf, int buflen) { + ns_updrec *rrecp_start = rrecp_in; + HEADER *hp; + u_char *cp, *sp1, *sp2, *startp, *endp; + int n, i, soanum, multiline; + ns_updrec *rrecp; + struct in_addr ina; + char buf2[MAXDNAME]; + int section, numrrs = 0, counts[ns_s_max]; + u_int16_t rtype, rclass; + u_int32_t n1, rttl; + u_char *dnptrs[20], **dpp, **lastdnptr; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + h_errno = NETDB_INTERNAL; + return (-1); + } + + /* + * Initialize header fields. + */ + if ((buf == NULL) || (buflen < HFIXEDSZ)) + return (-1); + memset(buf, 0, HFIXEDSZ); + hp = (HEADER *) buf; + hp->id = htons(++_res.id); + hp->opcode = ns_o_update; + hp->rcode = NOERROR; + sp1 = buf + 2*INT16SZ; /* save pointer to zocount */ + cp = buf + HFIXEDSZ; + buflen -= HFIXEDSZ; + dpp = dnptrs; + *dpp++ = buf; + *dpp++ = NULL; + lastdnptr = dnptrs + sizeof dnptrs / sizeof dnptrs[0]; + + if (rrecp_start == NULL) + return (-5); + else if (rrecp_start->r_section != S_ZONE) + return (-3); + + memset(counts, 0, sizeof counts); + for (rrecp = rrecp_start; rrecp; rrecp = rrecp->r_grpnext) { + numrrs++; + section = rrecp->r_section; + if (section < 0 || section >= ns_s_max) + return (-1); + counts[section]++; + for (i = section + 1; i < ns_s_max; i++) + if (counts[i]) + return (-3); + rtype = rrecp->r_type; + rclass = rrecp->r_class; + rttl = rrecp->r_ttl; + /* overload class and type */ + if (section == S_PREREQ) { + rttl = 0; + switch (rrecp->r_opcode) { + case YXDOMAIN: + rclass = C_ANY; + rtype = T_ANY; + rrecp->r_size = 0; + break; + case NXDOMAIN: + rclass = C_NONE; + rtype = T_ANY; + rrecp->r_size = 0; + break; + case NXRRSET: + rclass = C_NONE; + rrecp->r_size = 0; + break; + case YXRRSET: + if (rrecp->r_size == 0) + rclass = C_ANY; + break; + default: + fprintf(stderr, + "res_mkupdate: incorrect opcode: %d\n", + rrecp->r_opcode); + fflush(stderr); + return (-1); + } + } else if (section == S_UPDATE) { + switch (rrecp->r_opcode) { + case DELETE: + rclass = rrecp->r_size == 0 ? C_ANY : C_NONE; + break; + case ADD: + break; + default: + fprintf(stderr, + "res_mkupdate: incorrect opcode: %d\n", + rrecp->r_opcode); + fflush(stderr); + return (-1); + } + } + + /* + * XXX appending default domain to owner name is omitted, + * fqdn must be provided + */ + if ((n = dn_comp(rrecp->r_dname, cp, buflen, dnptrs, + lastdnptr)) < 0) + return (-1); + cp += n; + ShrinkBuffer(n + 2*INT16SZ); + PUTSHORT(rtype, cp); + PUTSHORT(rclass, cp); + if (section == S_ZONE) { + if (numrrs != 1 || rrecp->r_type != T_SOA) + return (-3); + continue; + } + ShrinkBuffer(INT32SZ + INT16SZ); + PUTLONG(rttl, cp); + sp2 = cp; /* save pointer to length byte */ + cp += INT16SZ; + if (rrecp->r_size == 0) { + if (section == S_UPDATE && rclass != C_ANY) + return (-1); + else { + PUTSHORT(0, sp2); + continue; + } + } + startp = rrecp->r_data; + endp = startp + rrecp->r_size - 1; + /* XXX this should be done centrally. */ + switch (rrecp->r_type) { + case T_A: + if (!getword_str(buf2, sizeof buf2, &startp, endp)) + return (-1); + if (!inet_aton(buf2, &ina)) + return (-1); + n1 = ntohl(ina.s_addr); + ShrinkBuffer(INT32SZ); + PUTLONG(n1, cp); + break; + case T_CNAME: + case T_MB: + case T_MG: + case T_MR: + case T_NS: + case T_PTR: + if (!getword_str(buf2, sizeof buf2, &startp, endp)) + return (-1); + n = dn_comp(buf2, cp, buflen, dnptrs, lastdnptr); + if (n < 0) + return (-1); + cp += n; + ShrinkBuffer(n); + break; + case T_MINFO: + case T_SOA: + case T_RP: + for (i = 0; i < 2; i++) { + if (!getword_str(buf2, sizeof buf2, &startp, + endp)) + return (-1); + n = dn_comp(buf2, cp, buflen, + dnptrs, lastdnptr); + if (n < 0) + return (-1); + cp += n; + ShrinkBuffer(n); + } + if (rrecp->r_type == T_SOA) { + ShrinkBuffer(5 * INT32SZ); + while (isspace(*startp) || !*startp) + startp++; + if (*startp == '(') { + multiline = 1; + startp++; + } else + multiline = 0; + /* serial, refresh, retry, expire, minimum */ + for (i = 0; i < 5; i++) { + soanum = getnum_str(&startp, endp); + if (soanum < 0) + return (-1); + PUTLONG(soanum, cp); + } + if (multiline) { + while (isspace(*startp) || !*startp) + startp++; + if (*startp != ')') + return (-1); + } + } + break; + case T_MX: + case T_AFSDB: + case T_RT: + n = getnum_str(&startp, endp); + if (n < 0) + return (-1); + PUTSHORT(n, cp); + ShrinkBuffer(INT16SZ); + if (!getword_str(buf2, sizeof buf2, &startp, endp)) + return (-1); + n = dn_comp(buf2, cp, buflen, dnptrs, lastdnptr); + if (n < 0) + return (-1); + cp += n; + ShrinkBuffer(n); + break; + case T_PX: + n = getnum_str(&startp, endp); + if (n < 0) + return (-1); + PUTSHORT(n, cp); + ShrinkBuffer(INT16SZ); + for (i = 0; i < 2; i++) { + if (!getword_str(buf2, sizeof buf2, &startp, + endp)) + return (-1); + n = dn_comp(buf2, cp, buflen, dnptrs, + lastdnptr); + if (n < 0) + return (-1); + cp += n; + ShrinkBuffer(n); + } + break; + case T_WKS: + case T_HINFO: + case T_TXT: + case T_X25: + case T_ISDN: + case T_NSAP: + case T_LOC: + /* XXX - more fine tuning needed here */ + ShrinkBuffer(rrecp->r_size); + memcpy(cp, rrecp->r_data, rrecp->r_size); + cp += rrecp->r_size; + break; + default: + return (-1); + } /*switch*/ + n = (u_int16_t)((cp - sp2) - INT16SZ); + PUTSHORT(n, sp2); + } /*for*/ + + hp->qdcount = htons(counts[0]); + hp->ancount = htons(counts[1]); + hp->nscount = htons(counts[2]); + hp->arcount = htons(counts[3]); + return (cp - buf); +} + +/* + * Get a whitespace delimited word from a string (not file) + * into buf. modify the start pointer to point after the + * word in the string. + */ +static int +getword_str(char *buf, int size, u_char **startpp, u_char *endp) { + char *cp; + int c; + + for (cp = buf; *startpp <= endp; ) { + c = **startpp; + if (isspace(c) || c == '\0') { + if (cp != buf) /* trailing whitespace */ + break; + else { /* leading whitespace */ + (*startpp)++; + continue; + } + } + (*startpp)++; + if (cp >= buf+size-1) + break; + *cp++ = (u_char)c; + } + *cp = '\0'; + return (cp != buf); +} + +/* + * Get a whitespace delimited number from a string (not file) into buf + * update the start pointer to point after the number in the string. + */ +static int +getnum_str(u_char **startpp, u_char *endp) { + int c, n; + int seendigit = 0; + int m = 0; + + for (n = 0; *startpp <= endp; ) { + c = **startpp; + if (isspace(c) || c == '\0') { + if (seendigit) /* trailing whitespace */ + break; + else { /* leading whitespace */ + (*startpp)++; + continue; + } + } + if (c == ';') { + while ((*startpp <= endp) && + ((c = **startpp) != '\n')) + (*startpp)++; + if (seendigit) + break; + continue; + } + if (!isdigit(c)) { + if (c == ')' && seendigit) { + (*startpp)--; + break; + } + return (-1); + } + (*startpp)++; + n = n * 10 + (c - '0'); + seendigit = 1; + } + return (n + m); +} + +/* + * Allocate a resource record buffer & save rr info. + */ +ns_updrec * +res_mkupdrec(int section, const char *dname, + u_int class, u_int type, u_long ttl) { + ns_updrec *rrecp = (ns_updrec *)calloc(1, sizeof(ns_updrec)); + + if (!rrecp || !(rrecp->r_dname = strdup(dname))) + return (NULL); + rrecp->r_class = class; + rrecp->r_type = type; + rrecp->r_ttl = ttl; + rrecp->r_section = section; + return (rrecp); +} + +/* + * Free a resource record buffer created by res_mkupdrec. + */ +void +res_freeupdrec(ns_updrec *rrecp) { + /* Note: freeing r_dp is the caller's responsibility. */ + if (rrecp->r_dname != NULL) + free(rrecp->r_dname); + free(rrecp); +} diff --git a/newlib/libc/sys/linux/net/res_query.c b/newlib/libc/sys/linux/net/res_query.c new file mode 100644 index 000000000..ee6775d99 --- /dev/null +++ b/newlib/libc/sys/linux/net/res_query.c @@ -0,0 +1,424 @@ +/* + * Copyright (c) 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +/* + * Portions Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)res_query.c 8.1 (Berkeley) 6/4/93"; +static char orig_rcsid = "From: Id: res_query.c,v 8.14 1997/06/09 17:47:05 halley Exp $"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <sys/param.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> +#include <ctype.h> +#include <errno.h> +#include <netdb.h> +#include <resolv.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "res_config.h" + +#if PACKETSZ > 1024 +#define MAXPACKET PACKETSZ +#else +#define MAXPACKET 1024 +#endif + +/* + * Formulate a normal query, send, and await answer. + * Returned answer is placed in supplied buffer "answer". + * Perform preliminary check of answer, returning success only + * if no error is indicated and the answer count is nonzero. + * Return the size of the response on success, -1 on error. + * Error number is left in h_errno. + * + * Caller must parse answer and determine whether it answers the question. + */ +int +res_query(name, class, type, answer, anslen) + const char *name; /* domain name */ + int class, type; /* class and type of query */ + u_char *answer; /* buffer to put answer */ + int anslen; /* size of answer buffer */ +{ + u_char buf[MAXPACKET]; + HEADER *hp = (HEADER *) answer; + int n; + + hp->rcode = NOERROR; /* default */ + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + h_errno = NETDB_INTERNAL; + return (-1); + } +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf(";; res_query(%s, %d, %d)\n", name, class, type); +#endif + + n = res_mkquery(QUERY, name, class, type, NULL, 0, NULL, + buf, sizeof(buf)); + if (n > 0 && (_res.options & RES_USE_EDNS0) != 0) + n = res_opt(n, buf, sizeof(buf), anslen); + if (n <= 0) { +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf(";; res_query: mkquery failed\n"); +#endif + h_errno = NO_RECOVERY; + return (n); + } + n = res_send(buf, n, answer, anslen); + if (n < 0) { +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf(";; res_query: send error\n"); +#endif + h_errno = TRY_AGAIN; + return (n); + } + + if (hp->rcode != NOERROR || ntohs(hp->ancount) == 0) { +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf(";; rcode = %d, ancount=%d\n", hp->rcode, + ntohs(hp->ancount)); +#endif + switch (hp->rcode) { + case NXDOMAIN: + h_errno = HOST_NOT_FOUND; + break; + case SERVFAIL: + h_errno = TRY_AGAIN; + break; + case NOERROR: + h_errno = NO_DATA; + break; + case FORMERR: + case NOTIMP: + case REFUSED: + default: + h_errno = NO_RECOVERY; + break; + } + return (-1); + } + return (n); +} + +/* + * Formulate a normal query, send, and retrieve answer in supplied buffer. + * Return the size of the response on success, -1 on error. + * If enabled, implement search rules until answer or unrecoverable failure + * is detected. Error code, if any, is left in h_errno. + */ +int +res_search(name, class, type, answer, anslen) + const char *name; /* domain name */ + int class, type; /* class and type of query */ + u_char *answer; /* buffer to put answer */ + int anslen; /* size of answer */ +{ + const char *cp, * const *domain; + HEADER *hp = (HEADER *) answer; + u_int dots; + int trailing_dot, ret, saved_herrno; + int got_nodata = 0, got_servfail = 0, tried_as_is = 0; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + h_errno = NETDB_INTERNAL; + return (-1); + } + errno = 0; + h_errno = HOST_NOT_FOUND; /* default, if we never query */ + dots = 0; + for (cp = name; *cp; cp++) + dots += (*cp == '.'); + trailing_dot = 0; + if (cp > name && *--cp == '.') + trailing_dot++; + + /* If there aren't any dots, it could be a user-level alias */ + if (!dots && (cp = hostalias(name)) != NULL) + return (res_query(cp, class, type, answer, anslen)); + + /* + * If there are dots in the name already, let's just give it a try + * 'as is'. The threshold can be set with the "ndots" option. + */ + saved_herrno = -1; + if (dots >= _res.ndots) { + ret = res_querydomain(name, NULL, class, type, answer, anslen); + if (ret > 0) + return (ret); + saved_herrno = h_errno; + tried_as_is++; + } + + /* + * We do at least one level of search if + * - there is no dot and RES_DEFNAME is set, or + * - there is at least one dot, there is no trailing dot, + * and RES_DNSRCH is set. + */ + if ((!dots && (_res.options & RES_DEFNAMES)) || + (dots && !trailing_dot && (_res.options & RES_DNSRCH))) { + int done = 0; + + for (domain = (const char * const *)_res.dnsrch; + *domain && !done; + domain++) { + + ret = res_querydomain(name, *domain, class, type, + answer, anslen); + if (ret > 0) + return (ret); + + /* + * If no server present, give up. + * If name isn't found in this domain, + * keep trying higher domains in the search list + * (if that's enabled). + * On a NO_DATA error, keep trying, otherwise + * a wildcard entry of another type could keep us + * from finding this entry higher in the domain. + * If we get some other error (negative answer or + * server failure), then stop searching up, + * but try the input name below in case it's + * fully-qualified. + */ + if (errno == ECONNREFUSED) { + h_errno = TRY_AGAIN; + return (-1); + } + + switch (h_errno) { + case NO_DATA: + got_nodata++; + /* FALLTHROUGH */ + case HOST_NOT_FOUND: + /* keep trying */ + break; + case TRY_AGAIN: + if (hp->rcode == SERVFAIL) { + /* try next search element, if any */ + got_servfail++; + break; + } + /* FALLTHROUGH */ + default: + /* anything else implies that we're done */ + done++; + } + + /* if we got here for some reason other than DNSRCH, + * we only wanted one iteration of the loop, so stop. + */ + if (!(_res.options & RES_DNSRCH)) + done++; + } + } + + /* + * If we have not already tried the name "as is", do that now. + * note that we do this regardless of how many dots were in the + * name or whether it ends with a dot unless NOTLDQUERY is set. + */ + if (!tried_as_is && (dots || !(_res.options & RES_NOTLDQUERY))) { + ret = res_querydomain(name, NULL, class, type, answer, anslen); + if (ret > 0) + return (ret); + } + + /* if we got here, we didn't satisfy the search. + * if we did an initial full query, return that query's h_errno + * (note that we wouldn't be here if that query had succeeded). + * else if we ever got a nodata, send that back as the reason. + * else send back meaningless h_errno, that being the one from + * the last DNSRCH we did. + */ + if (saved_herrno != -1) + h_errno = saved_herrno; + else if (got_nodata) + h_errno = NO_DATA; + else if (got_servfail) + h_errno = TRY_AGAIN; + return (-1); +} + +/* + * Perform a call on res_query on the concatenation of name and domain, + * removing a trailing dot from name if domain is NULL. + */ +int +res_querydomain(name, domain, class, type, answer, anslen) + const char *name, *domain; + int class, type; /* class and type of query */ + u_char *answer; /* buffer to put answer */ + int anslen; /* size of answer */ +{ + char nbuf[MAXDNAME]; + const char *longname = nbuf; + int n, d; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + h_errno = NETDB_INTERNAL; + return (-1); + } +#ifdef DEBUG + if (_res.options & RES_DEBUG) + printf(";; res_querydomain(%s, %s, %d, %d)\n", + name, domain?domain:"<Nil>", class, type); +#endif + if (domain == NULL) { + /* + * Check for trailing '.'; + * copy without '.' if present. + */ + n = strlen(name); + if (n >= MAXDNAME) { + h_errno = NO_RECOVERY; + return (-1); + } + n--; + if (n >= 0 && name[n] == '.') { + strncpy(nbuf, name, n); + nbuf[n] = '\0'; + } else + longname = name; + } else { + n = strlen(name); + d = strlen(domain); + if (n + d + 1 >= MAXDNAME) { + h_errno = NO_RECOVERY; + return (-1); + } + sprintf(nbuf, "%s.%s", name, domain); + } + return (res_query(longname, class, type, answer, anslen)); +} + +const char * +hostalias(name) + const char *name; +{ + char *cp1, *cp2; + FILE *fp; + char *file; + char buf[BUFSIZ]; + static char abuf[MAXDNAME]; + + if (_res.options & RES_NOALIASES) + return (NULL); + if (issetugid()) + return (NULL); + file = getenv("HOSTALIASES"); + if (file == NULL || (fp = fopen(file, "r")) == NULL) + return (NULL); + setbuf(fp, NULL); + buf[sizeof(buf) - 1] = '\0'; + while (fgets(buf, sizeof(buf), fp)) { + for (cp1 = buf; *cp1 && !isspace((unsigned char)*cp1); ++cp1) + ; + if (!*cp1) + break; + *cp1 = '\0'; + if (!strcasecmp(buf, name)) { + while (isspace((unsigned char)*++cp1)) + ; + if (!*cp1) + break; + for (cp2 = cp1 + 1; *cp2 && !isspace((unsigned char)*cp2); ++cp2) + ; + abuf[sizeof(abuf) - 1] = *cp2 = '\0'; + strncpy(abuf, cp1, sizeof(abuf) - 1); + fclose(fp); + return (abuf); + } + } + fclose(fp); + return (NULL); +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <resolv.h>. + */ +#undef res_query +__weak_reference(__res_query, res_query); +#undef res_search +__weak_reference(__res_search, res_search); +#undef res_querydomain +__weak_reference(__res_querydomain, res_querydomain); diff --git a/newlib/libc/sys/linux/net/res_send.c b/newlib/libc/sys/linux/net/res_send.c new file mode 100644 index 000000000..153d2f5d9 --- /dev/null +++ b/newlib/libc/sys/linux/net/res_send.c @@ -0,0 +1,954 @@ +/* + * Copyright (c) 1985, 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +/* + * Portions Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)res_send.c 8.1 (Berkeley) 6/4/93"; +static char orig_rcsid[] = "From: Id: res_send.c,v 8.20 1998/04/06 23:27:51 halley Exp $"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> +#include <machine/endian.h> + +/* + * Send query to name server and wait for reply. + */ + +#include <sys/types.h> +#include <sys/event.h> +#include <sys/poll.h> +#include <sys/param.h> +#include <sys/time.h> +#include <sys/socket.h> +#include <sys/uio.h> + +#include <netinet/in.h> +#include <arpa/nameser.h> +#include <arpa/inet.h> + +#include <errno.h> +#include <netdb.h> +#include <resolv.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "res_config.h" + +static int s = -1; /* socket used for communications */ +static int connected = 0; /* is the socket connected */ +static int vc = 0; /* is the socket a virtual circuit? */ +static int af = 0; /* address family of socket */ +static res_send_qhook Qhook = NULL; +static res_send_rhook Rhook = NULL; + + +#define CAN_RECONNECT 1 + +#ifndef DEBUG +# define Dprint(cond, args) /*empty*/ +# define DprintQ(cond, args, query, size) /*empty*/ +# define Aerror(file, string, error, address) /*empty*/ +# define Perror(file, string, error) /*empty*/ +#else +# define Dprint(cond, args) if (cond) {fprintf args;} else {} +# define DprintQ(cond, args, query, size) if (cond) {\ + fprintf args;\ + __fp_nquery(query, size, stdout);\ + } else {} +static char abuf[NI_MAXHOST]; +static char pbuf[NI_MAXSERV]; +static void Aerror(FILE *, char *, int, struct sockaddr *); +static void Perror(FILE *, char *, int); + + static void + Aerror(file, string, error, address) + FILE *file; + char *string; + int error; + struct sockaddr *address; + { + int save = errno; + + if (_res.options & RES_DEBUG) { + if (getnameinfo(address, 0, abuf, sizeof(abuf), + pbuf, sizeof(pbuf), + NI_NUMERICHOST|NI_NUMERICSERV|NI_WITHSCOPEID) != 0) { + strncpy(abuf, "?", sizeof(abuf)); + strncpy(pbuf, "?", sizeof(pbuf)); + } + fprintf(file, "res_send: %s ([%s].%s): %s\n", + string, abuf, pbuf, strerror(error)); + } + errno = save; + } + static void + Perror(file, string, error) + FILE *file; + char *string; + int error; + { + int save = errno; + + if (_res.options & RES_DEBUG) { + fprintf(file, "res_send: %s: %s\n", + string, strerror(error)); + } + errno = save; + } +#endif + +void +res_send_setqhook(hook) + res_send_qhook hook; +{ + + Qhook = hook; +} + +void +res_send_setrhook(hook) + res_send_rhook hook; +{ + + Rhook = hook; +} + +static struct sockaddr * get_nsaddr(size_t); + +/* + * pick appropriate nsaddr_list for use. see res_init() for initialization. + */ +static struct sockaddr * +get_nsaddr(n) + size_t n; +{ + + if (!_res.nsaddr_list[n].sin_family) { + /* + * - _res_ext.nsaddr_list[n] holds an address that is larger + * than struct sockaddr, and + * - user code did not update _res.nsaddr_list[n]. + */ + return (struct sockaddr *)&_res_ext.nsaddr_list[n]; + } else { + /* + * - user code updated _res.nsaddr_list[n], or + * - _res.nsaddr_list[n] has the same content as + * _res_ext.nsaddr_list[n]. + */ + return (struct sockaddr *)&_res.nsaddr_list[n]; + } +} + +/* int + * res_isourserver(ina) + * looks up "ina" in _res.ns_addr_list[] + * returns: + * 0 : not found + * >0 : found + * author: + * paul vixie, 29may94 + */ +int +res_isourserver(inp) + const struct sockaddr_in *inp; +{ + const struct sockaddr_in6 *in6p = (const struct sockaddr_in6 *)inp; + const struct sockaddr_in6 *srv6; + const struct sockaddr_in *srv; + int ns, ret; + + ret = 0; + switch (inp->sin_family) { + case AF_INET6: + for (ns = 0; ns < _res.nscount; ns++) { + srv6 = (struct sockaddr_in6 *)get_nsaddr(ns); + if (srv6->sin6_family == in6p->sin6_family && + srv6->sin6_port == in6p->sin6_port && + srv6->sin6_scope_id == in6p->sin6_scope_id && + (IN6_IS_ADDR_UNSPECIFIED(&srv6->sin6_addr) || + IN6_ARE_ADDR_EQUAL(&srv6->sin6_addr, + &in6p->sin6_addr))) { + ret++; + break; + } + } + break; + case AF_INET: + for (ns = 0; ns < _res.nscount; ns++) { + srv = (struct sockaddr_in *)get_nsaddr(ns); + if (srv->sin_family == inp->sin_family && + srv->sin_port == inp->sin_port && + (srv->sin_addr.s_addr == INADDR_ANY || + srv->sin_addr.s_addr == inp->sin_addr.s_addr)) { + ret++; + break; + } + } + break; + } + return (ret); +} + +/* int + * res_nameinquery(name, type, class, buf, eom) + * look for (name,type,class) in the query section of packet (buf,eom) + * requires: + * buf + HFIXEDSZ <= eom + * returns: + * -1 : format error + * 0 : not found + * >0 : found + * author: + * paul vixie, 29may94 + */ +int +res_nameinquery(name, type, class, buf, eom) + const char *name; + int type, class; + const u_char *buf, *eom; +{ + const u_char *cp = buf + HFIXEDSZ; + int qdcount = ntohs(((HEADER*)buf)->qdcount); + + while (qdcount-- > 0) { + char tname[MAXDNAME+1]; + int n, ttype, tclass; + + n = dn_expand(buf, eom, cp, tname, sizeof tname); + if (n < 0) + return (-1); + cp += n; + if (cp + 2 * INT16SZ > eom) + return (-1); + ttype = ns_get16(cp); cp += INT16SZ; + tclass = ns_get16(cp); cp += INT16SZ; + if (ttype == type && + tclass == class && + strcasecmp(tname, name) == 0) + return (1); + } + return (0); +} + +/* int + * res_queriesmatch(buf1, eom1, buf2, eom2) + * is there a 1:1 mapping of (name,type,class) + * in (buf1,eom1) and (buf2,eom2)? + * returns: + * -1 : format error + * 0 : not a 1:1 mapping + * >0 : is a 1:1 mapping + * author: + * paul vixie, 29may94 + */ +int +res_queriesmatch(buf1, eom1, buf2, eom2) + const u_char *buf1, *eom1; + const u_char *buf2, *eom2; +{ + const u_char *cp = buf1 + HFIXEDSZ; + int qdcount = ntohs(((HEADER*)buf1)->qdcount); + + if (buf1 + HFIXEDSZ > eom1 || buf2 + HFIXEDSZ > eom2) + return (-1); + + /* + * Only header section present in replies to + * dynamic update packets. + */ + if ( (((HEADER *)buf1)->opcode == ns_o_update) && + (((HEADER *)buf2)->opcode == ns_o_update) ) + return (1); + + if (qdcount != ntohs(((HEADER*)buf2)->qdcount)) + return (0); + while (qdcount-- > 0) { + char tname[MAXDNAME+1]; + int n, ttype, tclass; + + n = dn_expand(buf1, eom1, cp, tname, sizeof tname); + if (n < 0) + return (-1); + cp += n; + if (cp + 2 * INT16SZ > eom1) + return (-1); + ttype = ns_get16(cp); cp += INT16SZ; + tclass = ns_get16(cp); cp += INT16SZ; + if (!res_nameinquery(tname, ttype, tclass, buf2, eom2)) + return (0); + } + return (1); +} + +int +res_send(buf, buflen, ans, anssiz) + const u_char *buf; + int buflen; + u_char *ans; + int anssiz; +{ + HEADER *hp = (HEADER *) buf; + HEADER *anhp = (HEADER *) ans; + int gotsomewhere, connreset, terrno, try, v_circuit, resplen, ns, n; + int kq; + u_int badns; /* XXX NSMAX can't exceed #/bits in this variable */ + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + /* errno should have been set by res_init() in this case. */ + return (-1); + } + if (anssiz < HFIXEDSZ) { + errno = EINVAL; + return (-1); + } + DprintQ((_res.options & RES_DEBUG) || (_res.pfcode & RES_PRF_QUERY), + (stdout, ";; res_send()\n"), buf, buflen); + v_circuit = (_res.options & RES_USEVC) || buflen > PACKETSZ; + gotsomewhere = 0; + connreset = 0; + terrno = ETIMEDOUT; + badns = 0; + + /* + * Send request, RETRY times, or until successful + */ + for (try = 0; try < _res.retry; try++) { + for (ns = 0; ns < _res.nscount; ns++) { + struct sockaddr *nsap = get_nsaddr(ns); + socklen_t salen; + + if (nsap->sa_family == AF_INET6) + salen = sizeof(struct sockaddr_in6); + else if (nsap->sa_family == AF_INET) + salen = sizeof(struct sockaddr_in); + else + salen = 0; /*unknown, die on connect*/ + + same_ns: + if (badns & (1 << ns)) { + res_close(); + goto next_ns; + } + + if (Qhook) { + int done = 0, loops = 0; + + do { + res_sendhookact act; + + act = (*Qhook)((struct sockaddr_in **)&nsap, + &buf, &buflen, + ans, anssiz, &resplen); + switch (act) { + case res_goahead: + done = 1; + break; + case res_nextns: + res_close(); + goto next_ns; + case res_done: + close(kq); + return (resplen); + case res_modified: + /* give the hook another try */ + if (++loops < 42) /*doug adams*/ + break; + /*FALLTHROUGH*/ + case res_error: + /*FALLTHROUGH*/ + default: + close(kq); + return (-1); + } + } while (!done); + } + + Dprint((_res.options & RES_DEBUG) && + getnameinfo(nsap, salen, abuf, sizeof(abuf), + NULL, 0, NI_NUMERICHOST | NI_WITHSCOPEID) == 0, + (stdout, ";; Querying server (# %d) address = %s\n", + ns + 1, abuf)); + + if (v_circuit) { + int truncated; + u_short len; + u_char *cp; + ssize_t rc; + + /* + * Use virtual circuit; + * at most one attempt per server. + */ + try = _res.retry; + truncated = 0; + if (s < 0 || !vc || hp->opcode == ns_o_update || + af != nsap->sa_family) { + if (s >= 0) + res_close(); + + af = nsap->sa_family; + s = socket(af, SOCK_STREAM, 0); + if (s < 0) { + terrno = errno; + Perror(stderr, "socket(vc)", errno); + badns |= (1 << ns); + res_close(); + goto next_ns; + } + errno = 0; + if (connect(s, nsap, salen) < 0) { + terrno = errno; + Aerror(stderr, "connect/vc", + errno, nsap); + badns |= (1 << ns); + res_close(); + goto next_ns; + } + vc = 1; + } + /* + * Send length & message + */ + putshort((u_short)buflen, (u_char*)&len); +#if !defined(_ELIX_LEVEL) || _ELIX_LEVEL >= 2 + { + struct iovec iov[2]; + iov[0].iov_base = (caddr_t)&len; + iov[0].iov_len = INT16SZ; + iov[1].iov_base = (caddr_t)buf; + iov[1].iov_len = buflen; + rc = writev(s, iov, 2); + } +#else /* EL/IX level 1 */ + { + char *tmpbuf; + tmpbuf = malloc (INT16SZ + buflen); + memcpy (tmpbuf, &len, INT16SZ); + memcpy (tmpbuf + INT16SZ, buf, buflen); + rc = write (s, tmpbuf, INT16SZ + buflen); + } +#endif /* EL/IX level 1 */ + if (rc != (INT16SZ + buflen)) { + terrno = errno; + Perror(stderr, "write failed", errno); + badns |= (1 << ns); + res_close(); + goto next_ns; + } + /* + * Receive length & response + */ + read_len: + cp = ans; + len = INT16SZ; + while ((n = read(s, (char *)cp, (int)len)) > 0) { + cp += n; + if ((len -= n) <= 0) + break; + } + if (n <= 0) { + terrno = errno; + Perror(stderr, "read failed", errno); + res_close(); + /* + * A long running process might get its TCP + * connection reset if the remote server was + * restarted. Requery the server instead of + * trying a new one. When there is only one + * server, this means that a query might work + * instead of failing. We only allow one reset + * per query to prevent looping. + */ + if (terrno == ECONNRESET && !connreset) { + connreset = 1; + res_close(); + goto same_ns; + } + res_close(); + goto next_ns; + } + resplen = ns_get16(ans); + if (resplen > anssiz) { + Dprint(_res.options & RES_DEBUG, + (stdout, ";; response truncated\n") + ); + truncated = 1; + len = anssiz; + } else + len = resplen; + if (len < HFIXEDSZ) { + /* + * Undersized message. + */ + Dprint(_res.options & RES_DEBUG, + (stdout, ";; undersized: %d\n", len)); + terrno = EMSGSIZE; + badns |= (1 << ns); + res_close(); + goto next_ns; + } + cp = ans; + while (len != 0 && + (n = read(s, (char *)cp, (int)len)) > 0) { + cp += n; + len -= n; + } + if (n <= 0) { + terrno = errno; + Perror(stderr, "read(vc)", errno); + res_close(); + goto next_ns; + } + if (truncated) { + /* + * Flush rest of answer + * so connection stays in synch. + */ + anhp->tc = 1; + len = resplen - anssiz; + while (len != 0) { + char junk[PACKETSZ]; + + n = (len > sizeof(junk) + ? sizeof(junk) + : len); + if ((n = read(s, junk, n)) > 0) + len -= n; + else + break; + } + } + /* + * The calling applicating has bailed out of + * a previous call and failed to arrange to have + * the circuit closed or the server has got + * itself confused. Anyway drop the packet and + * wait for the correct one. + */ + if (hp->id != anhp->id) { + DprintQ((_res.options & RES_DEBUG) || + (_res.pfcode & RES_PRF_REPLY), + (stdout, ";; old answer (unexpected):\n"), + ans, (resplen>anssiz)?anssiz:resplen); + goto read_len; + } + } else { + /* + * Use datagrams. + */ + struct pollfd pfd[1]; + int ptimeout; + struct timespec ts; + struct timeval timeout, ctv; + struct sockaddr_storage from; + int fromlen; + + if (s < 0 || vc || af != nsap->sa_family) { + if (vc) + res_close(); + af = nsap->sa_family; + s = socket(af, SOCK_DGRAM, 0); + if (s < 0) { +#ifndef CAN_RECONNECT + bad_dg_sock: +#endif + terrno = errno; + Perror(stderr, "socket(dg)", errno); + badns |= (1 << ns); + res_close(); + goto next_ns; + } + connected = 0; + } +#ifndef CANNOT_CONNECT_DGRAM + /* + * On a 4.3BSD+ machine (client and server, + * actually), sending to a nameserver datagram + * port with no nameserver will cause an + * ICMP port unreachable message to be returned. + * If our datagram socket is "connected" to the + * server, we get an ECONNREFUSED error on the next + * socket operation, and select returns if the + * error message is received. We can thus detect + * the absence of a nameserver without timing out. + * If we have sent queries to at least two servers, + * however, we don't want to remain connected, + * as we wish to receive answers from the first + * server to respond. + * + * When the option "insecure1" is specified, we'd + * rather expect to see responses from an "unknown" + * address. In order to let the kernel accept such + * responses, do not connect the socket here. + * XXX: or do we need an explicit option to disable + * connecting? + */ + if (!(_res.options & RES_INSECURE1) && + (_res.nscount == 1 || (try == 0 && ns == 0))) { + /* + * Connect only if we are sure we won't + * receive a response from another server. + */ + if (!connected) { + if (connect(s, nsap, salen) < 0) { + Aerror(stderr, + "connect(dg)", + errno, nsap); + badns |= (1 << ns); + res_close(); + goto next_ns; + } + connected = 1; + } + + if (send(s, (char*)buf, buflen, 0) != buflen) { + Perror(stderr, "send", errno); + badns |= (1 << ns); + res_close(); + goto next_ns; + } + } else { + /* + * Disconnect if we want to listen + * for responses from more than one server. + */ + if (connected) { +#ifdef CAN_RECONNECT + /* XXX: any errornous address */ + struct sockaddr_in no_addr; + + no_addr.sin_family = AF_INET; + no_addr.sin_addr.s_addr = INADDR_ANY; + no_addr.sin_port = 0; + (void) connect(s, + (struct sockaddr *) + &no_addr, + sizeof no_addr); +#else + int s1 = socket(af, SOCK_DGRAM,0); + if (s1 < 0) + goto bad_dg_sock; + (void)_dup2(s1, s); + (void)close(s1); + Dprint(_res.options & RES_DEBUG, + (stdout, ";; new DG socket\n")) +#endif /* CAN_RECONNECT */ + connected = 0; + errno = 0; + } +#endif /* !CANNOT_CONNECT_DGRAM */ + if (sendto(s, (char*)buf, buflen, 0, + nsap, salen) != buflen) { + Aerror(stderr, "sendto", errno, nsap); + badns |= (1 << ns); + res_close(); + goto next_ns; + } +#ifndef CANNOT_CONNECT_DGRAM + } +#endif /* !CANNOT_CONNECT_DGRAM */ + + /* + * Wait for reply + */ + + timeout.tv_sec = (_res.retrans << try); + if (try > 0) + timeout.tv_sec /= _res.nscount; + if ((long) timeout.tv_sec <= 0) + timeout.tv_sec = 1; + timeout.tv_usec = 0; + TIMEVAL_TO_TIMESPEC(&timeout, &ts); + (void) gettimeofday(&ctv, NULL); + timeradd(&timeout, &ctv, &timeout); + + /* Convert struct timespec in milliseconds. */ + ptimeout = timeout.tv_sec * 1000 + timeout.tv_usec / 1000; + wait: + pfd[0].fd = s; + pfd[0].events = POLLIN; + n = poll (pfd, 1, ptimeout); + + if (s < 0) { + Perror(stderr, "s out-of-bounds", EMFILE); + res_close(); + goto next_ns; + } + + if (n < 0) { + if (errno == EINTR) { + (void) gettimeofday(&ctv, NULL); + if (timercmp(&ctv, &timeout, <)) { + timersub(&timeout, &ctv, &ctv); + TIMEVAL_TO_TIMESPEC(&ctv, &ts); + goto wait; + } + } + Perror(stderr, "poll", errno); + res_close(); + goto next_ns; + } + + if (n == 0) { + /* + * timeout + */ + Dprint(_res.options & RES_DEBUG, + (stdout, ";; timeout\n")); + gotsomewhere = 1; + res_close(); + goto next_ns; + } + errno = 0; + fromlen = sizeof(from); + resplen = recvfrom(s, (char*)ans, anssiz, 0, + (struct sockaddr *)&from, &fromlen); + if (resplen <= 0) { + Perror(stderr, "recvfrom", errno); + res_close(); + goto next_ns; + } + gotsomewhere = 1; + if (resplen < HFIXEDSZ) { + /* + * Undersized message. + */ + Dprint(_res.options & RES_DEBUG, + (stdout, ";; undersized: %d\n", + resplen)); + terrno = EMSGSIZE; + badns |= (1 << ns); + res_close(); + goto next_ns; + } + if (hp->id != anhp->id) { + /* + * response from old query, ignore it. + * XXX - potential security hazard could + * be detected here. + */ + DprintQ((_res.options & RES_DEBUG) || + (_res.pfcode & RES_PRF_REPLY), + (stdout, ";; old answer:\n"), + ans, (resplen>anssiz)?anssiz:resplen); + goto wait; + } +#ifdef CHECK_SRVR_ADDR + if (!(_res.options & RES_INSECURE1) && + !res_isourserver((struct sockaddr_in *)&from)) { + /* + * response from wrong server? ignore it. + * XXX - potential security hazard could + * be detected here. + */ + DprintQ((_res.options & RES_DEBUG) || + (_res.pfcode & RES_PRF_REPLY), + (stdout, ";; not our server:\n"), + ans, (resplen>anssiz)?anssiz:resplen); + goto wait; + } +#endif + if (!(_res.options & RES_INSECURE2) && + !res_queriesmatch(buf, buf + buflen, + ans, ans + anssiz)) { + /* + * response contains wrong query? ignore it. + * XXX - potential security hazard could + * be detected here. + */ + DprintQ((_res.options & RES_DEBUG) || + (_res.pfcode & RES_PRF_REPLY), + (stdout, ";; wrong query name:\n"), + ans, (resplen>anssiz)?anssiz:resplen); + goto wait; + } + if (anhp->rcode == SERVFAIL || + anhp->rcode == NOTIMP || + anhp->rcode == REFUSED) { + DprintQ(_res.options & RES_DEBUG, + (stdout, "server rejected query:\n"), + ans, (resplen>anssiz)?anssiz:resplen); + badns |= (1 << ns); + res_close(); + /* don't retry if called from dig */ + if (!_res.pfcode) + goto next_ns; + } + if (!(_res.options & RES_IGNTC) && anhp->tc) { + /* + * get rest of answer; + * use TCP with same server. + */ + Dprint(_res.options & RES_DEBUG, + (stdout, ";; truncated answer\n")); + v_circuit = 1; + res_close(); + goto same_ns; + } + } /*if vc/dg*/ + Dprint((_res.options & RES_DEBUG) || + ((_res.pfcode & RES_PRF_REPLY) && + (_res.pfcode & RES_PRF_HEAD1)), + (stdout, ";; got answer:\n")); +#if 0 + DprintQ((_res.options & RES_DEBUG) || + (_res.pfcode & RES_PRF_REPLY), + (stdout, ""), + ans, (resplen>anssiz)?anssiz:resplen); +#endif + /* + * If using virtual circuits, we assume that the first server + * is preferred over the rest (i.e. it is on the local + * machine) and only keep that one open. + * If we have temporarily opened a virtual circuit, + * or if we haven't been asked to keep a socket open, + * close the socket. + */ + if ((v_circuit && (!(_res.options & RES_USEVC) || ns != 0)) || + !(_res.options & RES_STAYOPEN)) { + res_close(); + } + if (Rhook) { + int done = 0, loops = 0; + + do { + res_sendhookact act; + + act = (*Rhook)((struct sockaddr_in *)nsap, + buf, buflen, + ans, anssiz, &resplen); + switch (act) { + case res_goahead: + case res_done: + done = 1; + break; + case res_nextns: + res_close(); + goto next_ns; + case res_modified: + /* give the hook another try */ + if (++loops < 42) /*doug adams*/ + break; + /*FALLTHROUGH*/ + case res_error: + /*FALLTHROUGH*/ + default: + close(kq); + return (-1); + } + } while (!done); + + } + close(kq); + return (resplen); + next_ns: ; + } /*foreach ns*/ + } /*foreach retry*/ + res_close(); + close(kq); + if (!v_circuit) { + if (!gotsomewhere) + errno = ECONNREFUSED; /* no nameservers found */ + else + errno = ETIMEDOUT; /* no answer obtained */ + } else + errno = terrno; + return (-1); +} + +/* + * This routine is for closing the socket if a virtual circuit is used and + * the program wants to close it. This provides support for endhostent() + * which expects to close the socket. + * + * This routine is not expected to be user visible. + */ +void +res_close() +{ + if (s >= 0) { + (void)close(s); + s = -1; + connected = 0; + vc = 0; + af = 0; + } +} + +/* + * Weak aliases for applications that use certain private entry points, + * and fail to include <resolv.h>. + */ +#undef res_close +__weak_reference(__res_close, _res_close); +#undef res_send +__weak_reference(__res_send, res_send); diff --git a/newlib/libc/sys/linux/net/res_update.c b/newlib/libc/sys/linux/net/res_update.c new file mode 100644 index 000000000..b427bf819 --- /dev/null +++ b/newlib/libc/sys/linux/net/res_update.c @@ -0,0 +1,515 @@ +/* + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +/* + * Based on the Dynamic DNS reference implementation by Viraj Bais + * <viraj_bais@ccm.fm.intel.com> + */ + +#include <sys/cdefs.h> +#include <sys/types.h> +#include <machine/endian.h> + +#include <sys/param.h> +#include <sys/socket.h> +#include <sys/time.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <arpa/nameser.h> +#include <limits.h> +#include <netdb.h> +#include <resolv.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +/* + * Separate a linked list of records into groups so that all records + * in a group will belong to a single zone on the nameserver. + * Create a dynamic update packet for each zone and send it to the + * nameservers for that zone, and await answer. + * Abort if error occurs in updating any zone. + * Return the number of zones updated on success, < 0 on error. + * + * On error, caller must deal with the unsynchronized zones + * eg. an A record might have been successfully added to the forward + * zone but the corresponding PTR record would be missing if error + * was encountered while updating the reverse zone. + */ + +#define NSMAX 16 + +struct ns1 { + char nsname[MAXDNAME]; + struct in_addr nsaddr1; +}; + +struct zonegrp { + char z_origin[MAXDNAME]; + int16_t z_class; + char z_soardata[MAXDNAME + 5 * INT32SZ]; + struct ns1 z_ns[NSMAX]; + int z_nscount; + ns_updrec * z_rr; + struct zonegrp *z_next; +}; + + +int +res_update(ns_updrec *rrecp_in) { + ns_updrec *rrecp, *tmprrecp; + u_char buf[PACKETSZ], answer[PACKETSZ], packet[2*PACKETSZ]; + char name[MAXDNAME], zname[MAXDNAME], primary[MAXDNAME], + mailaddr[MAXDNAME]; + u_char soardata[2*MAXCDNAME+5*INT32SZ]; + char *dname, *svdname, *cp1, *target; + u_char *cp, *eom; + HEADER *hp = (HEADER *) answer; + struct zonegrp *zptr = NULL, *tmpzptr, *prevzptr, *zgrp_start = NULL; + int i, j, k = 0, n, ancount, nscount, arcount, rcode, rdatasize, + newgroup, done, myzone, seen_before, numzones = 0; + u_int16_t dlen, class, qclass, type, qtype; + u_int32_t ttl; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + h_errno = NETDB_INTERNAL; + return (-1); + } + + for (rrecp = rrecp_in; rrecp; rrecp = rrecp->r_next) { + dname = rrecp->r_dname; + n = strlen(dname); + if (dname[n-1] == '.') + dname[n-1] = '\0'; + qtype = T_SOA; + qclass = rrecp->r_class; + done = 0; + seen_before = 0; + + while (!done && dname) { + if (qtype == T_SOA) { + for (tmpzptr = zgrp_start; + tmpzptr && !seen_before; + tmpzptr = tmpzptr->z_next) { + if (strcasecmp(dname, + tmpzptr->z_origin) == 0 && + tmpzptr->z_class == qclass) + seen_before++; + for (tmprrecp = tmpzptr->z_rr; + tmprrecp && !seen_before; + tmprrecp = tmprrecp->r_grpnext) + if (strcasecmp(dname, tmprrecp->r_dname) == 0 + && tmprrecp->r_class == qclass) { + seen_before++; + break; + } + if (seen_before) { + /* + * Append to the end of + * current group. + */ + for (tmprrecp = tmpzptr->z_rr; + tmprrecp->r_grpnext; + tmprrecp = tmprrecp->r_grpnext) + (void)NULL; + tmprrecp->r_grpnext = rrecp; + rrecp->r_grpnext = NULL; + done = 1; + break; + } + } + } else if (qtype == T_A) { + for (tmpzptr = zgrp_start; + tmpzptr && !done; + tmpzptr = tmpzptr->z_next) + for (i = 0; i < tmpzptr->z_nscount; i++) + if (tmpzptr->z_class == qclass && + strcasecmp(tmpzptr->z_ns[i].nsname, + dname) == 0 && + tmpzptr->z_ns[i].nsaddr1.s_addr != 0) { + zptr->z_ns[k].nsaddr1.s_addr = + tmpzptr->z_ns[i].nsaddr1.s_addr; + done = 1; + break; + } + } + if (done) + break; + n = res_mkquery(QUERY, dname, qclass, qtype, NULL, + 0, NULL, buf, sizeof buf); + if (n <= 0) { + fprintf(stderr, "res_update: mkquery failed\n"); + return (n); + } + n = res_send(buf, n, answer, sizeof answer); + if (n < 0) { + fprintf(stderr, "res_update: send error for %s\n", + rrecp->r_dname); + return (n); + } + if (n < HFIXEDSZ) + return (-1); + ancount = ntohs(hp->ancount); + nscount = ntohs(hp->nscount); + arcount = ntohs(hp->arcount); + rcode = hp->rcode; + cp = answer + HFIXEDSZ; + eom = answer + n; + /* skip the question section */ + n = dn_skipname(cp, eom); + if (n < 0 || cp + n + 2 * INT16SZ > eom) + return (-1); + cp += n + 2 * INT16SZ; + + if (qtype == T_SOA) { + if (ancount == 0 && nscount == 0 && arcount == 0) { + /* + * if (rcode == NOERROR) then the dname exists but + * has no soa record associated with it. + * if (rcode == NXDOMAIN) then the dname does not + * exist and the server is replying out of NCACHE. + * in either case, proceed with the next try + */ + dname = strchr(dname, '.'); + if (dname != NULL) + dname++; + continue; + } else if ((rcode == NOERROR || rcode == NXDOMAIN) && + ancount == 0 && + nscount == 1 && arcount == 0) { + /* + * name/data does not exist, soa record supplied in the + * authority section + */ + /* authority section must contain the soa record */ + if ((n = dn_expand(answer, eom, cp, zname, + sizeof zname)) < 0) + return (n); + cp += n; + if (cp + 2 * INT16SZ > eom) + return (-1); + GETSHORT(type, cp); + GETSHORT(class, cp); + if (type != T_SOA || class != qclass) { + fprintf(stderr, "unknown answer\n"); + return (-1); + } + myzone = 0; + svdname = dname; + while (dname) + if (strcasecmp(dname, zname) == 0) { + myzone = 1; + break; + } else if ((dname = strchr(dname, '.')) != NULL) + dname++; + if (!myzone) { + dname = strchr(svdname, '.'); + if (dname != NULL) + dname++; + continue; + } + nscount = 0; + /* fallthrough */ + } else if (rcode == NOERROR && ancount == 1) { + /* + * found the zone name + * new servers will supply NS records for the zone + * in authority section and A records for those + * nameservers in the additional section + * older servers have to be explicitly queried for + * NS records for the zone + */ + /* answer section must contain the soa record */ + if ((n = dn_expand(answer, eom, cp, zname, + sizeof zname)) < 0) + return (n); + else + cp += n; + if (cp + 2 * INT16SZ > eom) + return (-1); + GETSHORT(type, cp); + GETSHORT(class, cp); + if (type == T_CNAME) { + dname = strchr(dname, '.'); + if (dname != NULL) + dname++; + continue; + } + if (strcasecmp(dname, zname) != 0 || + type != T_SOA || + class != rrecp->r_class) { + fprintf(stderr, "unknown answer\n"); + return (-1); + } + /* FALLTHROUGH */ + } else { + fprintf(stderr, + "unknown response: ans=%d, auth=%d, add=%d, rcode=%d\n", + ancount, nscount, arcount, hp->rcode); + return (-1); + } + if (cp + INT32SZ + INT16SZ > eom) + return (-1); + /* continue processing the soa record */ + GETLONG(ttl, cp); + GETSHORT(dlen, cp); + if (cp + dlen > eom) + return (-1); + newgroup = 1; + zptr = zgrp_start; + prevzptr = NULL; + while (zptr) { + if (strcasecmp(zname, zptr->z_origin) == 0 && + type == T_SOA && class == qclass) { + newgroup = 0; + break; + } + prevzptr = zptr; + zptr = zptr->z_next; + } + if (!newgroup) { + for (tmprrecp = zptr->z_rr; + tmprrecp->r_grpnext; + tmprrecp = tmprrecp->r_grpnext) + ; + tmprrecp->r_grpnext = rrecp; + rrecp->r_grpnext = NULL; + done = 1; + cp += dlen; + break; + } else { + if ((n = dn_expand(answer, eom, cp, primary, + sizeof primary)) < 0) + return (n); + cp += n; + /* + * We don't have to bounds check here because the + * next use of 'cp' is in dn_expand(). + */ + cp1 = (char *)soardata; + strcpy(cp1, primary); + cp1 += strlen(cp1) + 1; + if ((n = dn_expand(answer, eom, cp, mailaddr, + sizeof mailaddr)) < 0) + return (n); + cp += n; + strcpy(cp1, mailaddr); + cp1 += strlen(cp1) + 1; + if (cp + 5*INT32SZ > eom) + return (-1); + memcpy(cp1, cp, 5*INT32SZ); + cp += 5*INT32SZ; + cp1 += 5*INT32SZ; + rdatasize = (u_char *)cp1 - soardata; + zptr = calloc(1, sizeof(struct zonegrp)); + if (zptr == NULL) + return (-1); + if (zgrp_start == NULL) + zgrp_start = zptr; + else + prevzptr->z_next = zptr; + zptr->z_rr = rrecp; + rrecp->r_grpnext = NULL; + strcpy(zptr->z_origin, zname); + zptr->z_class = class; + memcpy(zptr->z_soardata, soardata, rdatasize); + /* fallthrough to process NS and A records */ + } + } else if (qtype == T_NS) { + if (rcode == NOERROR && ancount > 0) { + strcpy(zname, dname); + for (zptr = zgrp_start; zptr; zptr = zptr->z_next) { + if (strcasecmp(zname, zptr->z_origin) == 0) + break; + } + if (zptr == NULL) + /* should not happen */ + return (-1); + if (nscount > 0) { + /* + * answer and authority sections contain + * the same information, skip answer section + */ + for (j = 0; j < ancount; j++) { + n = dn_skipname(cp, eom); + if (n < 0) + return (-1); + n += 2*INT16SZ + INT32SZ; + if (cp + n + INT16SZ > eom) + return (-1); + cp += n; + GETSHORT(dlen, cp); + cp += dlen; + } + } else + nscount = ancount; + /* fallthrough to process NS and A records */ + } else { + fprintf(stderr, "cannot determine nameservers for %s:\ +ans=%d, auth=%d, add=%d, rcode=%d\n", + dname, ancount, nscount, arcount, hp->rcode); + return (-1); + } + } else if (qtype == T_A) { + if (rcode == NOERROR && ancount > 0) { + arcount = ancount; + ancount = nscount = 0; + /* fallthrough to process A records */ + } else { + fprintf(stderr, "cannot determine address for %s:\ +ans=%d, auth=%d, add=%d, rcode=%d\n", + dname, ancount, nscount, arcount, hp->rcode); + return (-1); + } + } + /* process NS records for the zone */ + j = 0; + for (i = 0; i < nscount; i++) { + if ((n = dn_expand(answer, eom, cp, name, + sizeof name)) < 0) + return (n); + cp += n; + if (cp + 3 * INT16SZ + INT32SZ > eom) + return (-1); + GETSHORT(type, cp); + GETSHORT(class, cp); + GETLONG(ttl, cp); + GETSHORT(dlen, cp); + if (cp + dlen > eom) + return (-1); + if (strcasecmp(name, zname) == 0 && + type == T_NS && class == qclass) { + if ((n = dn_expand(answer, eom, cp, + name, sizeof name)) < 0) + return (n); + target = zptr->z_ns[j++].nsname; + strcpy(target, name); + } + cp += dlen; + } + if (zptr->z_nscount == 0) + zptr->z_nscount = j; + /* get addresses for the nameservers */ + for (i = 0; i < arcount; i++) { + if ((n = dn_expand(answer, eom, cp, name, + sizeof name)) < 0) + return (n); + cp += n; + if (cp + 3 * INT16SZ + INT32SZ > eom) + return (-1); + GETSHORT(type, cp); + GETSHORT(class, cp); + GETLONG(ttl, cp); + GETSHORT(dlen, cp); + if (cp + dlen > eom) + return (-1); + if (type == T_A && dlen == INT32SZ && class == qclass) { + for (j = 0; j < zptr->z_nscount; j++) + if (strcasecmp(name, zptr->z_ns[j].nsname) == 0) { + memcpy(&zptr->z_ns[j].nsaddr1.s_addr, cp, + INT32SZ); + break; + } + } + cp += dlen; + } + if (zptr->z_nscount == 0) { + dname = zname; + qtype = T_NS; + continue; + } + done = 1; + for (k = 0; k < zptr->z_nscount; k++) + if (zptr->z_ns[k].nsaddr1.s_addr == 0) { + done = 0; + dname = zptr->z_ns[k].nsname; + qtype = T_A; + } + + } /* while */ + } + + _res.options |= RES_DEBUG; + for (zptr = zgrp_start; zptr; zptr = zptr->z_next) { + + /* append zone section */ + rrecp = res_mkupdrec(ns_s_zn, zptr->z_origin, + zptr->z_class, ns_t_soa, 0); + if (rrecp == NULL) { + fprintf(stderr, "saverrec error\n"); + fflush(stderr); + return (-1); + } + rrecp->r_grpnext = zptr->z_rr; + zptr->z_rr = rrecp; + + n = res_mkupdate(zptr->z_rr, packet, sizeof packet); + if (n < 0) { + fprintf(stderr, "res_mkupdate error\n"); + fflush(stderr); + return (-1); + } else + fprintf(stdout, "res_mkupdate: packet size = %d\n", n); + + /* + * Override the list of NS records from res_init() with + * the authoritative nameservers for the zone being updated. + * Sort primary to be the first in the list of nameservers. + */ + for (i = 0; i < zptr->z_nscount; i++) { + if (strcasecmp(zptr->z_ns[i].nsname, + zptr->z_soardata) == 0) { + struct in_addr tmpaddr; + + if (i != 0) { + strcpy(zptr->z_ns[i].nsname, + zptr->z_ns[0].nsname); + strcpy(zptr->z_ns[0].nsname, + zptr->z_soardata); + tmpaddr = zptr->z_ns[i].nsaddr1; + zptr->z_ns[i].nsaddr1 = + zptr->z_ns[0].nsaddr1; + zptr->z_ns[0].nsaddr1 = tmpaddr; + } + break; + } + } + for (i = 0; i < MAXNS; i++) { + _res.nsaddr_list[i].sin_addr = zptr->z_ns[i].nsaddr1; + _res.nsaddr_list[i].sin_family = AF_INET; + _res.nsaddr_list[i].sin_port = htons(NAMESERVER_PORT); + } + _res.nscount = (zptr->z_nscount < MAXNS) ? + zptr->z_nscount : MAXNS; + n = res_send(packet, n, answer, sizeof(answer)); + if (n < 0) { + fprintf(stderr, "res_send: send error, n=%d\n", n); + break; + } else + numzones++; + } + + /* free malloc'ed memory */ + while(zgrp_start) { + zptr = zgrp_start; + zgrp_start = zgrp_start->z_next; + res_freeupdrec(zptr->z_rr); /* Zone section we allocated. */ + free((char *)zptr); + } + + return (numzones); +} diff --git a/newlib/libc/sys/linux/net/resolver.3 b/newlib/libc/sys/linux/net/resolver.3 new file mode 100644 index 000000000..141759855 --- /dev/null +++ b/newlib/libc/sys/linux/net/resolver.3 @@ -0,0 +1,422 @@ +.\" Copyright (c) 1985, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)resolver.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD: src/lib/libc/net/resolver.3,v 1.21 2001/10/01 16:08:56 ru Exp $ +.\" +.Dd June 4, 1993 +.Dt RESOLVER 3 +.Os +.Sh NAME +.Nm res_query , +.Nm res_search , +.Nm res_mkquery , +.Nm res_send , +.Nm res_init , +.Nm dn_comp , +.Nm dn_expand , +.Nm dn_skipname , +.Nm ns_get16 , +.Nm ns_get32 , +.Nm ns_put16 , +.Nm ns_put32 +.Nd resolver routines +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In netinet/in.h +.In arpa/nameser.h +.In resolv.h +.Ft int +.Fo res_query +.Fa "const char *dname" +.Fa "int class" +.Fa "int type" +.Fa "u_char *answer" +.Fa "int anslen" +.Fc +.Ft int +.Fo res_search +.Fa "const char *dname" +.Fa "int class" +.Fa "int type" +.Fa "u_char *answer" +.Fa "int anslen" +.Fc +.Ft int +.Fo res_mkquery +.Fa "int op" +.Fa "const char *dname" +.Fa "int class" +.Fa "int type" +.Fa "const u_char *data" +.Fa "int datalen" +.Fa "const u_char *newrr_in" +.Fa "u_char *buf" +.Fa "int buflen" +.Fc +.Ft int +.Fo res_send +.Fa "const u_char *msg" +.Fa "int msglen" +.Fa "u_char *answer" +.Fa "int anslen" +.Fc +.Ft int +.Fn res_init +.Ft int +.Fo dn_comp +.Fa "const char *exp_dn" +.Fa "u_char *comp_dn" +.Fa "int length" +.Fa "u_char **dnptrs" +.Fa "u_char **lastdnptr" +.Fc +.Ft int +.Fo dn_expand +.Fa "const u_char *msg" +.Fa "const u_char *eomorig" +.Fa "const u_char *comp_dn" +.Fa "char *exp_dn" +.Fa "int length" +.Fc +.Ft int +.Fn dn_skipname "const u_char *comp_dn" "const u_char *eom" +.Ft u_int +.Fn ns_get16 "const u_char *src" +.Ft u_long +.Fn ns_get32 "const u_char *src" +.Ft void +.Fn ns_put16 "u_int src" "u_char *dst" +.Ft void +.Fn ns_put32 "u_long src" "u_char *dst" +.Sh DESCRIPTION +These routines are used for making, sending and interpreting +query and reply messages with Internet domain name servers. +.Pp +Global configuration and state information that is used by the +resolver routines is kept in the structure +.Em _res . +Most of the values have reasonable defaults and can be ignored. +Options +stored in +.Em _res.options +are defined in +.Pa resolv.h +and are as follows. +Options are stored as a simple bit mask containing the bitwise ``or'' +of the options enabled. +.Bl -tag -width RES_USE_INET6 +.It Dv RES_INIT +True if the initial name server address and default domain name are +initialized (i.e., +.Fn res_init +has been called). +.It Dv RES_DEBUG +Print debugging messages. +.It Dv RES_AAONLY +Accept authoritative answers only. +With this option, +.Fn res_send +should continue until it finds an authoritative answer or finds an error. +Currently this is not implemented. +.It Dv RES_USEVC +Use +.Tn TCP +connections for queries instead of +.Tn UDP +datagrams. +.It Dv RES_STAYOPEN +Used with +.Dv RES_USEVC +to keep the +.Tn TCP +connection open between +queries. +This is useful only in programs that regularly do many queries. +.Tn UDP +should be the normal mode used. +.It Dv RES_IGNTC +Unused currently (ignore truncation errors, i.e., don't retry with +.Tn TCP ) . +.It Dv RES_RECURSE +Set the recursion-desired bit in queries. +This is the default. +.Pf ( Fn res_send +does not do iterative queries and expects the name server +to handle recursion.) +.It Dv RES_DEFNAMES +If set, +.Fn res_search +will append the default domain name to single-component names +(those that do not contain a dot). +This option is enabled by default. +.It Dv RES_DNSRCH +If this option is set, +.Fn res_search +will search for host names in the current domain and in parent domains; see +.Xr hostname 7 . +This is used by the standard host lookup routine +.Xr gethostbyname 3 . +This option is enabled by default. +.It Dv RES_NOALIASES +This option turns off the user level aliasing feature controlled by the +.Dq Ev HOSTALIASES +environment variable. Network daemons should set this option. +.It Dv RES_USE_INET6 +Enables support for IPv6-only applications. +This causes IPv4 addresses to be returned as an IPv4 mapped address. +For example, +.Li 10.1.1.1 +will be returned as +.Li ::ffff:10.1.1.1 . +The option is meaningful with certain kernel configuration only. +.It Dv RES_USE_EDNS0 +Enables support for OPT pseudo-RR for EDNS0 extension. +With the option, resolver code will attach OPT pseudo-RR into DNS queries, +to inform of our receive buffer size. +The option will allow DNS servers to take advantage of non-default receive +buffer size, and to send larger replies. +DNS query packets with EDNS0 extension is not compatible with +non-EDNS0 DNS servers. +.El +.Pp +The +.Fn res_init +routine +reads the configuration file (if any; see +.Xr resolver 5 ) +to get the default domain name, +search list and +the Internet address of the local name server(s). +If no server is configured, the host running +the resolver is tried. +The current domain name is defined by the hostname +if not specified in the configuration file; +it can be overridden by the environment variable +.Ev LOCALDOMAIN . +This environment variable may contain several blank-separated +tokens if you wish to override the +.Em "search list" +on a per-process basis. This is similar to the +.Em search +command in the configuration file. +Another environment variable +.Dq Ev RES_OPTIONS +can be set to +override certain internal resolver options which are otherwise +set by changing fields in the +.Em _res +structure or are inherited from the configuration file's +.Em options +command. The syntax of the +.Dq Ev RES_OPTIONS +environment variable is explained in +.Xr resolver 5 . +Initialization normally occurs on the first call +to one of the following routines. +.Pp +The +.Fn res_query +function provides an interface to the server query mechanism. +It constructs a query, sends it to the local server, +awaits a response, and makes preliminary checks on the reply. +The query requests information of the specified +.Fa type +and +.Fa class +for the specified fully-qualified domain name +.Fa dname . +The reply message is left in the +.Fa answer +buffer with length +.Fa anslen +supplied by the caller. +.Pp +The +.Fn res_search +routine makes a query and awaits a response like +.Fn res_query , +but in addition, it implements the default and search rules +controlled by the +.Dv RES_DEFNAMES +and +.Dv RES_DNSRCH +options. +It returns the first successful reply. +.Pp +The remaining routines are lower-level routines used by +.Fn res_query . +The +.Fn res_mkquery +function +constructs a standard query message and places it in +.Fa buf . +It returns the size of the query, or \-1 if the query is +larger than +.Fa buflen . +The query type +.Fa op +is usually +.Dv QUERY , +but can be any of the query types defined in +.Aq Pa arpa/nameser.h . +The domain name for the query is given by +.Fa dname . +.Fa Newrr +is currently unused but is intended for making update messages. +.Pp +The +.Fn res_send +routine +sends a pre-formatted query and returns an answer. +It will call +.Fn res_init +if +.Dv RES_INIT +is not set, send the query to the local name server, and +handle timeouts and retries. +The length of the reply message is returned, or +\-1 if there were errors. +.Pp +The +.Fn dn_comp +function +compresses the domain name +.Fa exp_dn +and stores it in +.Fa comp_dn . +The size of the compressed name is returned or \-1 if there were errors. +The size of the array pointed to by +.Fa comp_dn +is given by +.Fa length . +The compression uses +an array of pointers +.Fa dnptrs +to previously-compressed names in the current message. +The first pointer points to +the beginning of the message and the list ends with +.Dv NULL . +The limit to the array is specified by +.Fa lastdnptr . +A side effect of +.Fn dn_comp +is to update the list of pointers for +labels inserted into the message +as the name is compressed. +If +.Em dnptr +is +.Dv NULL , +names are not compressed. +If +.Fa lastdnptr +is +.Dv NULL , +the list of labels is not updated. +.Pp +The +.Fn dn_expand +entry +expands the compressed domain name +.Fa comp_dn +to a full domain name +The compressed name is contained in a query or reply message; +.Fa msg +is a pointer to the beginning of the message. +The uncompressed name is placed in the buffer indicated by +.Fa exp_dn +which is of size +.Fa length . +The size of compressed name is returned or \-1 if there was an error. +.Pp +The +.Fn dn_skipname +function skips over a compressed domain name, which starts at a location +pointed to by +.Fa comp_dn . +The compressed name is contained in a query or reply message; +.Fa eom +is a pointer to the end of the message. +The size of compressed name is returned or \-1 if there was +an error. +.Pp +The +.Fn ns_get16 +function gets a 16-bit quantity from a buffer pointed to by +.Fa src . +.Pp +The +.Fn ns_get32 +function gets a 32-bit quantity from a buffer pointed to by +.Fa src . +.Pp +The +.Fn ns_put16 +function puts a 16-bit quantity +.Fa src +to a buffer pointed to by +.Fa dst . +.Pp +The +.Fn ns_put32 +function puts a 32-bit quantity +.Fa src +to a buffer pointed to by +.Fa dst . +.Sh FILES +.Bl -tag -width /etc/resolv.conf +.It Pa /etc/resolv.conf +The configuration file, +see +.Xr resolver 5 . +.El +.Sh SEE ALSO +.Xr gethostbyname 3 , +.Xr resolver 5 , +.Xr hostname 7 , +.Xr named 8 +.Pp +.%T RFC1032 , +.%T RFC1033 , +.%T RFC1034 , +.%T RFC1035 , +.%T RFC974 +.Rs +.%T "Name Server Operations Guide for BIND" +.Re +.Sh HISTORY +The +.Nm +function appeared in +.Bx 4.3 . diff --git a/newlib/libc/sys/linux/net/rthdr.c b/newlib/libc/sys/linux/net/rthdr.c new file mode 100644 index 000000000..e5f7814b1 --- /dev/null +++ b/newlib/libc/sys/linux/net/rthdr.c @@ -0,0 +1,319 @@ +/* $KAME: rthdr.c,v 1.8 2001/08/20 02:32:40 itojun Exp $ */ + +/* + * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/param.h> +#include <sys/types.h> +#include <sys/socket.h> + +#include <netinet/in.h> +#include <netinet/ip6.h> + +#include <string.h> +#include <stdio.h> + +/* to define items, should talk with KAME guys first, for *BSD compatibility */ + +#define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */ +#define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */ +#define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */ + +size_t +inet6_rthdr_space(type, seg) + int type, seg; +{ + switch(type) { + case IPV6_RTHDR_TYPE_0: + if (seg < 1 || seg > 23) + return(0); + return(CMSG_SPACE(sizeof(struct in6_addr) * (seg - 1) + + sizeof(struct ip6_rthdr0))); + default: +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_space: unknown type(%d)\n", type); +#endif + return(0); + } +} + +struct cmsghdr * +inet6_rthdr_init(bp, type) + void *bp; + int type; +{ + struct cmsghdr *ch = (struct cmsghdr *)bp; + struct ip6_rthdr *rthdr; + + rthdr = (struct ip6_rthdr *)CMSG_DATA(ch); + + ch->cmsg_level = IPPROTO_IPV6; + ch->cmsg_type = IPV6_RTHDR; + + switch(type) { + case IPV6_RTHDR_TYPE_0: + ch->cmsg_len = CMSG_LEN(sizeof(struct ip6_rthdr0) - sizeof(struct in6_addr)); + bzero(rthdr, sizeof(struct ip6_rthdr0)); + rthdr->ip6r_type = IPV6_RTHDR_TYPE_0; + return(ch); + default: +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_init: unknown type(%d)\n", type); +#endif + return(NULL); + } +} + +int +inet6_rthdr_add(cmsg, addr, flags) + struct cmsghdr *cmsg; + const struct in6_addr *addr; + u_int flags; +{ + struct ip6_rthdr *rthdr; + + rthdr = (struct ip6_rthdr *)CMSG_DATA(cmsg); + + switch(rthdr->ip6r_type) { + case IPV6_RTHDR_TYPE_0: + { + struct ip6_rthdr0 *rt0 = (struct ip6_rthdr0 *)rthdr; + if (flags != IPV6_RTHDR_LOOSE && flags != IPV6_RTHDR_STRICT) { +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_add: unsupported flag(%d)\n", flags); +#endif + return(-1); + } + if (rt0->ip6r0_segleft == 23) { +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_add: segment overflow\n"); +#endif + return(-1); + } + if (flags == IPV6_RTHDR_STRICT) { + int c, b; + c = rt0->ip6r0_segleft / 8; + b = rt0->ip6r0_segleft % 8; + rt0->ip6r0_slmap[c] |= (1 << (7 - b)); + } + rt0->ip6r0_segleft++; + bcopy(addr, (caddr_t)rt0 + ((rt0->ip6r0_len + 1) << 3), + sizeof(struct in6_addr)); + rt0->ip6r0_len += sizeof(struct in6_addr) >> 3; + cmsg->cmsg_len = CMSG_LEN((rt0->ip6r0_len + 1) << 3); + break; + } + default: +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_add: unknown type(%d)\n", + rthdr->ip6r_type); +#endif + return(-1); + } + + return(0); +} + +int +inet6_rthdr_lasthop(cmsg, flags) + struct cmsghdr *cmsg; + unsigned int flags; +{ + struct ip6_rthdr *rthdr; + + rthdr = (struct ip6_rthdr *)CMSG_DATA(cmsg); + + switch(rthdr->ip6r_type) { + case IPV6_RTHDR_TYPE_0: + { + struct ip6_rthdr0 *rt0 = (struct ip6_rthdr0 *)rthdr; + if (flags != IPV6_RTHDR_LOOSE && flags != IPV6_RTHDR_STRICT) { +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_lasthop: unsupported flag(%d)\n", flags); +#endif + return(-1); + } + if (rt0->ip6r0_segleft > 23) { +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_add: segment overflow\n"); +#endif + return(-1); + } + if (flags == IPV6_RTHDR_STRICT) { + int c, b; + c = rt0->ip6r0_segleft / 8; + b = rt0->ip6r0_segleft % 8; + rt0->ip6r0_slmap[c] |= (1 << (7 - b)); + } + break; + } + default: +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_lasthop: unknown type(%d)\n", + rthdr->ip6r_type); +#endif + return(-1); + } + + return(0); +} + +#if 0 +int +inet6_rthdr_reverse(in, out) + const struct cmsghdr *in; + struct cmsghdr *out; +{ +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_reverse: not implemented yet\n"); +#endif + return -1; +} +#endif + +int +inet6_rthdr_segments(cmsg) + const struct cmsghdr *cmsg; +{ + struct ip6_rthdr *rthdr; + + rthdr = (struct ip6_rthdr *)CMSG_DATA(cmsg); + + switch(rthdr->ip6r_type) { + case IPV6_RTHDR_TYPE_0: + { + struct ip6_rthdr0 *rt0 = (struct ip6_rthdr0 *)rthdr; + + if (rt0->ip6r0_len % 2 || 46 < rt0->ip6r0_len) { +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_segments: invalid size(%d)\n", + rt0->ip6r0_len); +#endif + return -1; + } + + return (rt0->ip6r0_len * 8) / sizeof(struct in6_addr); + } + + default: +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_segments: unknown type(%d)\n", + rthdr->ip6r_type); +#endif + return -1; + } +} + +struct in6_addr * +inet6_rthdr_getaddr(cmsg, idx) + struct cmsghdr *cmsg; + int idx; +{ + struct ip6_rthdr *rthdr; + + rthdr = (struct ip6_rthdr *)CMSG_DATA(cmsg); + + switch(rthdr->ip6r_type) { + case IPV6_RTHDR_TYPE_0: + { + struct ip6_rthdr0 *rt0 = (struct ip6_rthdr0 *)rthdr; + int naddr; + + if (rt0->ip6r0_len % 2 || 46 < rt0->ip6r0_len) { +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_getaddr: invalid size(%d)\n", + rt0->ip6r0_len); +#endif + return NULL; + } + naddr = (rt0->ip6r0_len * 8) / sizeof(struct in6_addr); + if (idx <= 0 || naddr < idx) { +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_getaddr: invalid idx(%d)\n", idx); +#endif + return NULL; + } + return &rt0->ip6r0_addr[idx - 1]; + } + + default: +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_getaddr: unknown type(%d)\n", + rthdr->ip6r_type); +#endif + return NULL; + } +} + +int +inet6_rthdr_getflags(cmsg, idx) + const struct cmsghdr *cmsg; + int idx; +{ + struct ip6_rthdr *rthdr; + + rthdr = (struct ip6_rthdr *)CMSG_DATA(cmsg); + + switch(rthdr->ip6r_type) { + case IPV6_RTHDR_TYPE_0: + { + struct ip6_rthdr0 *rt0 = (struct ip6_rthdr0 *)rthdr; + int naddr; + + if (rt0->ip6r0_len % 2 || 46 < rt0->ip6r0_len) { +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_getflags: invalid size(%d)\n", + rt0->ip6r0_len); +#endif + return -1; + } + naddr = (rt0->ip6r0_len * 8) / sizeof(struct in6_addr); + if (idx < 0 || naddr < idx) { +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_getflags: invalid idx(%d)\n", idx); +#endif + return -1; + } + if (rt0->ip6r0_slmap[idx / 8] & (0x80 >> (idx % 8))) + return IPV6_RTHDR_STRICT; + else + return IPV6_RTHDR_LOOSE; + } + + default: +#ifdef DEBUG + fprintf(stderr, "inet6_rthdr_getflags: unknown type(%d)\n", + rthdr->ip6r_type); +#endif + return -1; + } +} diff --git a/newlib/libc/sys/linux/net/send.c b/newlib/libc/sys/linux/net/send.c new file mode 100644 index 000000000..8ff65d015 --- /dev/null +++ b/newlib/libc/sys/linux/net/send.c @@ -0,0 +1,54 @@ +/* + * Copyright (c) 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)send.c 8.2 (Berkeley) 2/21/94"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include "namespace.h" +#include <sys/types.h> +#include <sys/socket.h> + +#include <stddef.h> +#include "un-namespace.h" + +ssize_t +send(s, msg, len, flags) + int s, flags; + size_t len; + const void *msg; +{ + return (sendto(s, msg, len, flags, NULL, 0)); +} diff --git a/newlib/libc/sys/linux/net/un-namespace.h b/newlib/libc/sys/linux/net/un-namespace.h new file mode 100644 index 000000000..912109a0e --- /dev/null +++ b/newlib/libc/sys/linux/net/un-namespace.h @@ -0,0 +1,134 @@ +/* + * Copyright (c) 2001 Daniel Eischen <deischen@FreeBSD.org>. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD: src/lib/libc/include/un-namespace.h,v 1.7 2002/03/29 22:43:42 markm Exp $ + */ + +#ifndef _UN_NAMESPACE_H_ +#define _UN_NAMESPACE_H_ + +#undef accept +#undef __acl_aclcheck_fd +#undef __acl_delete_fd +#undef __acl_get_fd +#undef __acl_set_fd +#undef bind +#undef __cap_get_fd +#undef __cap_set_fd +#undef close +#undef connect +#undef dup +#undef dup2 +#undef execve +#undef fcntl +#undef flock +#undef fstat +#undef fstatfs +#undef fsync +#undef getdirentries +#undef getlogin +#undef getpeername +#undef getprogname +#undef getsockname +#undef getsockopt +#undef ioctl +#undef listen +#undef nanosleep +#undef open +#undef pthread_getspecific +#undef pthread_key_create +#undef pthread_key_delete +#undef pthread_mutex_destroy +#undef pthread_mutex_init +#undef pthread_mutex_lock +#undef pthread_mutex_trylock +#undef pthread_mutex_unlock +#undef pthread_mutexattr_init +#undef pthread_mutexattr_destroy +#undef pthread_mutexattr_settype +#undef pthread_once +#undef pthread_self +#undef pthread_setspecific +#undef read +#undef readv +#undef recvfrom +#undef recvmsg +#undef select +#undef sendmsg +#undef sendto +#undef setsockopt +#undef sigaction +#undef sigprocmask +#undef sigsuspend +#undef socket +#undef socketpair +#undef wait4 +#undef write +#undef writev + +#if 0 +#undef creat +#undef fchflags +#undef fchmod +#undef fpathconf +#undef msync +#undef nfssvc +#undef pause +#undef poll +#undef pthread_rwlock_destroy +#undef pthread_rwlock_init +#undef pthread_rwlock_rdlock +#undef pthread_rwlock_tryrdlock +#undef pthread_rwlock_trywrlock +#undef pthread_rwlock_unlock +#undef pthread_rwlock_wrlock +#undef pthread_rwlockattr_init +#undef pthread_rwlockattr_destroy +#undef sched_yield +#undef sendfile +#undef shutdown +#undef sigaltstack +#undef sigpending +#undef sigreturn +#undef sigsetmask +#undef sleep +#undef system +#undef tcdrain +#undef wait +#undef waitpid +#endif /* 0 */ + +#ifdef _SIGNAL_H_ +int _sigaction(int, const struct sigaction *, struct sigaction *); +#endif + +#ifdef _SYS_FCNTL_H_ +int _flock(int, int); +#endif + +#undef err +#undef warn + +#endif /* _UN_NAMESPACE_H_ */ diff --git a/newlib/libc/sys/linux/net/vars.c b/newlib/libc/sys/linux/net/vars.c new file mode 100644 index 000000000..c91a04bd1 --- /dev/null +++ b/newlib/libc/sys/linux/net/vars.c @@ -0,0 +1,45 @@ +/* $KAME: vars.c,v 1.2 2001/08/20 02:32:41 itojun Exp $ */ + +/* + * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <sys/types.h> +#include <netinet/in.h> + +/* + * Definitions of some costant IPv6 addresses. + */ +const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT; +const struct in6_addr in6addr_loopback = IN6ADDR_LOOPBACK_INIT; +const struct in6_addr in6addr_nodelocal_allnodes = IN6ADDR_NODELOCAL_ALLNODES_INIT; +const struct in6_addr in6addr_linklocal_allnodes = IN6ADDR_LINKLOCAL_ALLNODES_INIT; + |