diff options
Diffstat (limited to 'winsup/cygwin/libc')
| -rw-r--r-- | winsup/cygwin/libc/getopt.c | 504 | ||||
| -rw-r--r-- | winsup/cygwin/libc/iruserok.c | 270 |
2 files changed, 774 insertions, 0 deletions
diff --git a/winsup/cygwin/libc/getopt.c b/winsup/cygwin/libc/getopt.c new file mode 100644 index 000000000..5d97945fa --- /dev/null +++ b/winsup/cygwin/libc/getopt.c @@ -0,0 +1,504 @@ +/* $NetBSD: getopt_long.c,v 1.15 2002/01/31 22:43:40 tv Exp $ */ + +/*- + * Copyright (c) 2000 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Dieter Baron and Thomas Klausner. + * + * 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 "winsup.h" +#include <assert.h> +#include <errno.h> +#include <stdlib.h> +#include <string.h> +#include <getopt.h> +#include <stdarg.h> +#include <stdio.h> + +#define REPLACE_GETOPT + +#define _DIAGASSERT(x) do {} while (0) + +#ifdef REPLACE_GETOPT +#ifdef __weak_alias +__weak_alias(getopt,_getopt) +#endif +int __declspec(dllexport) opterr; /* if error message should be printed */ +int __declspec(dllexport) optind; /* index into parent argv vector */ +int __declspec(dllexport) optopt; /* character checked for validity */ +int __declspec(dllexport) optreset; /* reset getopt */ +char __declspec(dllexport) *optarg; /* argument associated with option */ +#endif + +#ifdef __weak_alias +__weak_alias(getopt_long,_getopt_long) +#endif + +#ifndef __CYGWIN__ +#define __progname __argv[0] +#else +extern char *__progname; +#endif + +#define IGNORE_FIRST (*options == '-' || *options == '+') +#define PRINT_ERROR ((opterr) && ((*options != ':') \ + || (IGNORE_FIRST && options[1] != ':'))) + +#define IS_POSIXLY_CORRECT (getenv("POSIXLY_INCORRECT_GETOPT") == NULL) + +#define PERMUTE (!IS_POSIXLY_CORRECT && !IGNORE_FIRST) +/* XXX: GNU ignores PC if *options == '-' */ +#define IN_ORDER (!IS_POSIXLY_CORRECT && *options == '-') + +/* return values */ +#define BADCH (int)'?' +#define BADARG ((IGNORE_FIRST && options[1] == ':') \ + || (*options == ':') ? (int)':' : (int)'?') +#define INORDER (int)1 + +static char EMSG[1]; + +static int getopt_internal (int, char * const *, const char *); +static int gcd (int, int); +static void permute_args (int, int, int, char * const *); + +static char *place = EMSG; /* option letter processing */ + +/* XXX: set optreset to 1 rather than these two */ +static int nonopt_start = -1; /* first non option argument (for permute) */ +static int nonopt_end = -1; /* first option after non options (for permute) */ + +/* Error messages */ +static const char recargchar[] = "option requires an argument -- %c"; +static const char recargstring[] = "option requires an argument -- %s"; +static const char ambig[] = "ambiguous option -- %.*s"; +static const char noarg[] = "option doesn't take an argument -- %.*s"; +static const char illoptchar[] = "unknown option -- %c"; +static const char illoptstring[] = "unknown option -- %s"; + +static void +_vwarnx(const char *fmt, va_list ap) +{ + (void)fprintf(stderr, "%s: ", __progname); + if (fmt != NULL) + (void)vfprintf(stderr, fmt, ap); + (void)fprintf(stderr, "\n"); +} + +static void +warnx(const char *fmt, ...) +{ + va_list ap; + va_start(ap, fmt); + _vwarnx(fmt, ap); + va_end(ap); +} + +/* + * Compute the greatest common divisor of a and b. + */ +static int +gcd(a, b) + int a; + int b; +{ + int c; + + c = a % b; + while (c != 0) { + a = b; + b = c; + c = a % b; + } + + return b; +} + +/* + * Exchange the block from nonopt_start to nonopt_end with the block + * from nonopt_end to opt_end (keeping the same order of arguments + * in each block). + */ +static void +permute_args(panonopt_start, panonopt_end, opt_end, nargv) + int panonopt_start; + int panonopt_end; + int opt_end; + char * const *nargv; +{ + int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos; + char *swap; + + _DIAGASSERT(nargv != NULL); + + /* + * compute lengths of blocks and number and size of cycles + */ + nnonopts = panonopt_end - panonopt_start; + nopts = opt_end - panonopt_end; + ncycle = gcd(nnonopts, nopts); + cyclelen = (opt_end - panonopt_start) / ncycle; + + for (i = 0; i < ncycle; i++) { + cstart = panonopt_end+i; + pos = cstart; + for (j = 0; j < cyclelen; j++) { + if (pos >= panonopt_end) + pos -= nnonopts; + else + pos += nopts; + swap = nargv[pos]; + /* LINTED const cast */ + ((char **) nargv)[pos] = nargv[cstart]; + /* LINTED const cast */ + ((char **)nargv)[cstart] = swap; + } + } +} + +/* + * getopt_internal -- + * Parse argc/argv argument vector. Called by user level routines. + * Returns -2 if -- is found (can be long option or end of options marker). + */ +static int +getopt_internal(nargc, nargv, options) + int nargc; + char * const *nargv; + const char *options; +{ + char *oli; /* option letter list index */ + int optchar; + + _DIAGASSERT(nargv != NULL); + _DIAGASSERT(options != NULL); + + optarg = NULL; + + /* + * XXX Some programs (like rsyncd) expect to be able to + * XXX re-initialize optind to 0 and have getopt_long(3) + * XXX properly function again. Work around this braindamage. + */ + if (optind == 0) + optind = 1; + + if (optreset) + nonopt_start = nonopt_end = -1; +start: + if (optreset || !*place) { /* update scanning pointer */ + optreset = 0; + if (optind >= nargc) { /* end of argument vector */ + place = EMSG; + if (nonopt_end != -1) { + /* do permutation, if we have to */ + permute_args(nonopt_start, nonopt_end, + optind, nargv); + optind -= nonopt_end - nonopt_start; + } + else if (nonopt_start != -1) { + /* + * If we skipped non-options, set optind + * to the first of them. + */ + optind = nonopt_start; + } + nonopt_start = nonopt_end = -1; + return -1; + } + if ((*(place = nargv[optind]) != '-') + || (place[1] == '\0')) { /* found non-option */ + place = EMSG; + if (IN_ORDER) { + /* + * GNU extension: + * return non-option as argument to option 1 + */ + optarg = nargv[optind++]; + return INORDER; + } + if (!PERMUTE) { + /* + * if no permutation wanted, stop parsing + * at first non-option + */ + return -1; + } + /* do permutation */ + if (nonopt_start == -1) + nonopt_start = optind; + else if (nonopt_end != -1) { + permute_args(nonopt_start, nonopt_end, + optind, nargv); + nonopt_start = optind - + (nonopt_end - nonopt_start); + nonopt_end = -1; + } + optind++; + /* process next argument */ + goto start; + } + if (nonopt_start != -1 && nonopt_end == -1) + nonopt_end = optind; + if (place[1] && *++place == '-') { /* found "--" */ + place++; + return -2; + } + } + if ((optchar = (int)*place++) == (int)':' || + (oli = strchr(options + (IGNORE_FIRST ? 1 : 0), optchar)) == NULL) { + /* option letter unknown or ':' */ + if (!*place) + ++optind; + if (PRINT_ERROR) + warnx(illoptchar, optchar); + optopt = optchar; + return BADCH; + } + if (optchar == 'W' && oli[1] == ';') { /* -W long-option */ + /* XXX: what if no long options provided (called by getopt)? */ + if (*place) + return -2; + + if (++optind >= nargc) { /* no arg */ + place = EMSG; + if (PRINT_ERROR) + warnx(recargchar, optchar); + optopt = optchar; + return BADARG; + } else /* white space */ + place = nargv[optind]; + /* + * Handle -W arg the same as --arg (which causes getopt to + * stop parsing). + */ + return -2; + } + if (*++oli != ':') { /* doesn't take argument */ + if (!*place) + ++optind; + } else { /* takes (optional) argument */ + optarg = NULL; + if (*place) /* no white space */ + optarg = place; + /* XXX: disable test for :: if PC? (GNU doesn't) */ + else if (oli[1] != ':') { /* arg not optional */ + if (++optind >= nargc) { /* no arg */ + place = EMSG; + if (PRINT_ERROR) + warnx(recargchar, optchar); + optopt = optchar; + return BADARG; + } else + optarg = nargv[optind]; + } + place = EMSG; + ++optind; + } + /* dump back option letter */ + return optchar; +} + +#ifdef REPLACE_GETOPT +/* + * getopt -- + * Parse argc/argv argument vector. + * + * [eventually this will replace the real getopt] + */ +int +getopt(nargc, nargv, options) + int nargc; + char * const *nargv; + const char *options; +{ + int retval; + + _DIAGASSERT(nargv != NULL); + _DIAGASSERT(options != NULL); + + if ((retval = getopt_internal(nargc, nargv, options)) == -2) { + ++optind; + /* + * We found an option (--), so if we skipped non-options, + * we have to permute. + */ + if (nonopt_end != -1) { + permute_args(nonopt_start, nonopt_end, optind, + nargv); + optind -= nonopt_end - nonopt_start; + } + nonopt_start = nonopt_end = -1; + retval = -1; + } + return retval; +} +#endif + +/* + * getopt_long -- + * Parse argc/argv argument vector. + */ +int +getopt_long(nargc, nargv, options, long_options, idx) + int nargc; + char * const *nargv; + const char *options; + const struct option *long_options; + int *idx; +{ + int retval; + + _DIAGASSERT(nargv != NULL); + _DIAGASSERT(options != NULL); + _DIAGASSERT(long_options != NULL); + /* idx may be NULL */ + + if ((retval = getopt_internal(nargc, nargv, options)) == -2) { + char *current_argv, *has_equal; + size_t current_argv_len; + int i, match; + + current_argv = place; + match = -1; + + optind++; + place = EMSG; + + if (*current_argv == '\0') { /* found "--" */ + /* + * We found an option (--), so if we skipped + * non-options, we have to permute. + */ + if (nonopt_end != -1) { + permute_args(nonopt_start, nonopt_end, + optind, nargv); + optind -= nonopt_end - nonopt_start; + } + nonopt_start = nonopt_end = -1; + return -1; + } + if ((has_equal = strchr(current_argv, '=')) != NULL) { + /* argument found (--option=arg) */ + current_argv_len = has_equal - current_argv; + has_equal++; + } else + current_argv_len = strlen(current_argv); + + for (i = 0; long_options[i].name; i++) { + /* find matching long option */ + if (strncmp(current_argv, long_options[i].name, + current_argv_len)) + continue; + + if (strlen(long_options[i].name) == + (unsigned)current_argv_len) { + /* exact match */ + match = i; + break; + } + if (match == -1) /* partial match */ + match = i; + else { + /* ambiguous abbreviation */ + if (PRINT_ERROR) + warnx(ambig, (int)current_argv_len, + current_argv); + optopt = 0; + return BADCH; + } + } + if (match != -1) { /* option found */ + if (long_options[match].has_arg == no_argument + && has_equal) { + if (PRINT_ERROR) + warnx(noarg, (int)current_argv_len, + current_argv); + /* + * XXX: GNU sets optopt to val regardless of + * flag + */ + if (long_options[match].flag == NULL) + optopt = long_options[match].val; + else + optopt = 0; + return BADARG; + } + if (long_options[match].has_arg == required_argument || + long_options[match].has_arg == optional_argument) { + if (has_equal) + optarg = has_equal; + else if (long_options[match].has_arg == + required_argument) { + /* + * optional argument doesn't use + * next nargv + */ + optarg = nargv[optind++]; + } + } + if ((long_options[match].has_arg == required_argument) + && (optarg == NULL)) { + /* + * Missing argument; leading ':' + * indicates no error should be generated + */ + if (PRINT_ERROR) + warnx(recargstring, current_argv); + /* + * XXX: GNU sets optopt to val regardless + * of flag + */ + if (long_options[match].flag == NULL) + optopt = long_options[match].val; + else + optopt = 0; + --optind; + return BADARG; + } + } else { /* unknown option */ + if (PRINT_ERROR) + warnx(illoptstring, current_argv); + optopt = 0; + return BADCH; + } + if (long_options[match].flag) { + *long_options[match].flag = long_options[match].val; + retval = 0; + } else + retval = long_options[match].val; + if (idx) + *idx = match; + } + return retval; +} diff --git a/winsup/cygwin/libc/iruserok.c b/winsup/cygwin/libc/iruserok.c new file mode 100644 index 000000000..8326dd0a5 --- /dev/null +++ b/winsup/cygwin/libc/iruserok.c @@ -0,0 +1,270 @@ +/* Based on the rcmd.c.new file distributed with linux libc 5.4.19 + Adapted to inetutils by Bernhard Rosenkraenzer <bero@startrek.in-trier.de> + + Note that a lot in this file is superfluous; hopefully it won't be a + problem for systems that need it for iruserok &c.... */ +/* + * 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. + */ + +#include "winsup.h" +#include <pwd.h> +#include <sys/stat.h> +#include <malloc.h> +#include <string.h> +#include <netdb.h> +#include <ctype.h> +#include <stdio.h> +#include <errno.h> +#include <sys/time.h> +#include <time.h> + +#ifndef PATH_HEQUIV +# define PATH_HEQUIV "/etc/hosts.equiv" +#endif + +int __check_rhosts_file = 1; +const char *__rcmd_errstr; + +/* + * Returns "true" if match, 0 if no match. + */ +static int +__icheckhost(raddr, lhost) + u_long raddr; + register char *lhost; +{ + register struct hostent *hp; + register u_long laddr; + register char **pp; + + /* Try for raw ip address first. */ + if (isdigit(*lhost) && (long)(laddr = cygwin_inet_addr(lhost)) != -1) + return (raddr == laddr); + + /* Better be a hostname. */ + if ((hp = cygwin_gethostbyname(lhost)) == NULL) + return (0); + + /* Spin through ip addresses. */ + for (pp = hp->h_addr_list; *pp; ++pp) + if (!bcmp(&raddr, *pp, sizeof(u_long))) + return (1); + + /* No match. */ + return (0); +} + +/* + * XXX + * Don't make static, used by lpd(8). + * + * Returns 0 if ok, -1 if not ok. + */ +static int +__ivaliduser(hostf, raddr, luser, ruser) + struct __sFILE64 *hostf; + u_long raddr; + const char *luser; + const char *ruser; +{ + size_t buf_offs = 0; + size_t buf_len = 256; + char *buf = malloc (buf_len); + + if (! buf) + return -1; + + while (fgets(buf + buf_offs, buf_len - buf_offs, hostf)) { + /*int ch;*/ + register char *user, *p; + + if (strchr(buf + buf_offs, '\n') == NULL) { + /* No newline yet, read some more. */ + buf_offs += strlen (buf + buf_offs); + + if (buf_offs >= buf_len - 1) { + /* Make more room in BUF. */ + char *new_buf; + + buf_len += buf_len; + new_buf = realloc (buf, buf_len); + + if (! new_buf) { + free (buf); + return -1; + } + + buf = new_buf; + } + + continue; + } + + buf_offs = 0; /* Start at beginning next time around. */ + + p = buf; + while (*p != '\n' && *p != ' ' && *p != '\t' && *p != '\0') { + /* *p = isupper(*p) ? tolower(*p) : *p; -- Uli */ + *p = tolower(*p); /* works for linux libc */ + 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'; + + if (__icheckhost(raddr, buf) && !strcmp(ruser, *user ? user : luser)) { + free (buf); + return (0); + } + } + + free (buf); + + 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) + u_long raddr; + int superuser; + const char *ruser; + const char *luser; +{ + register const char *cp; + struct __stat64 sbuf; + struct passwd *pwd; + struct __sFILE64 *hostf; + + uid_t uid; + int first = 1; + char *pbuf; + + first = 1; + hostf = superuser ? NULL : fopen64(PATH_HEQUIV, "rt"); +again: + if (hostf) { + if (__ivaliduser(hostf, raddr, 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); + + pbuf = malloc (strlen (pwd->pw_dir) + sizeof "/.rhosts"); + if (! pbuf) + { + errno = ENOMEM; + return -1; + } + strcpy (pbuf, pwd->pw_dir); + 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 = geteuid32(); + (void)seteuid32(pwd->pw_uid); + hostf = fopen64(pbuf, "rt"); + (void)seteuid32(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 (lstat64(pbuf, &sbuf) < 0) + cp = ".rhosts not regular file"; + else if (!S_ISREG(sbuf.st_mode)) + cp = ".rhosts not regular file"; + else if (fstat64(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 = (char *) cp; + fclose(hostf); + return(-1); + } + goto again; + } + return (-1); +} + +int +ruserok(rhost, superuser, ruser, luser) + const char *rhost; + int superuser; + const char *ruser; + const char *luser; +{ + struct hostent *hp; + u_long addr; + char **ap; + + if ((hp = cygwin_gethostbyname(rhost)) == NULL) + return (-1); + for (ap = hp->h_addr_list; *ap; ++ap) { + bcopy(*ap, &addr, sizeof(addr)); + if (iruserok(addr, superuser, ruser, luser) == 0) + return (0); + } + return (-1); +} |