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* close-lazy-streams: test.Kaz Kylheku2022-08-301-0/+3
| | | | * tests/018/close-lazy.tl: New file.
* txr: test for new @(next) behaviors.Kaz Kylheku2022-08-302-0/+17
| | | | | | * tests/018/noclose.txr: New file. * tests/018.noclose.expected: New file.
* path-components-safe: tighten /proc checkKaz Kylheku2022-07-301-30/+21
| | | | | | | | | | | | | | Attacks are possible via /proc/<pid>/fd/<n> involving a deleted file, whereby the link target changes from "/path/to/file" to "/path/to/file (deleted)", which can be perpetrated by a different user, not related to process <pid>, who has access to perform unlink("/path/to/file"). * stdlib/path-test.tl (safe-abs-path): Perform the pattern check regardless of effective user ID. * tests/018/path-safe.tl: Test cases adjusted.
* path-components-safe: repel /proc symlink attacksKaz Kylheku2022-07-291-0/+25
| | | | | | | | | | | | | | | | | | | | | | In a Linux system, it's possible for an unprivileged user to create a root symlink pointing to any directory, simply by changing to that directory and running a setuid executable like "su". That executable will get a process whose /proc/<pid> directory is root owned, and contains a symlink named cwd pointing to the current directory. Other symlinks under /proc look exploitable in this way. * stdlib/path-test.tl (safe-abs-path): New function. Here is where we are going to check for unsafe paths. We use some pattern matching to recognize various unsafe symlinks under /proc. (path-components-safe): Simplify code around recognition of absolute paths. When an absolute path is read from a symlink, remove the first empty component. Pass every absolute path through safe-abs-path to check for known unsafe paths. * tests/018/path-safe.tl: New tests.
* New function: path-components-safe.Kaz Kylheku2022-07-251-0/+89
| | | | | | | | | | | | | | | | * autoload.c (path_test_set_entries): Autoload on path-components-safe symbol. * stdlib/path-test.tl (if-windows, if-native-windows): New system macros. (path-safe-sticky-dir): New system function. (path-components-safe): New function. * tests/018/path-safe.tl: New file.' * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* bugfix: missing gzip support in open-command.Kaz Kylheku2022-06-211-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * stream.c (pipe_close_status_helper): New function, factored out of pipe_close and used by it, and also by gzio_close. (pipe_close): Call pipe_close, which now contains the classification of process wait status codes. (open_fileno): Now takes optional pid argument. If this specified, then make_pipevp_stream is used. (open_subprocess): Use the open_fileno function, rather than fopen. This simplifies things too, except that we have to catch exception. Pass pid to the newly added parameter of open_fileno so that we obtain a proper pipe stream that will wait for the process to terminate when closed. (mkstemp_wrap): Pass nil for pid argument of open_fileno. (stream_init): Update registration of open-fileno. * gzio.c (struct gzio_handle): New member, pid. (gzio_close): If there is a nonzero pid, wait for the process to terminate. (make_gzio_stream): Initialize h->pid to zero. (make_gzio_pipe_stream): New function. * parser.c (lino_fdopen): Pass nil for pid argument of open_fileno. * gzio.h (make_gzio_pipe_stream): Declared. * tests/018/gzip.tl: New test.
* cygwin: bug: sh always uses cmd.exe.Kaz Kylheku2022-05-311-9/+3
| | | | | | | | | | * stream.c (sh): Use a single definition for this function, which uses the shell and shell_arg variables to use either /bin/sh -c or cmd.exe /c. We only want to use cmd.exe when running as a Windows native program on Cygnal. * tests/018/process.tl: Remove workaround from test case. This is what was causing the weirdness.
* gzio: some tests.Kaz Kylheku2022-05-301-0/+53
| | | | * tests/018/gzip.tl: New file.
* New function: trim-path-sepsKaz Kylheku2022-05-201-0/+38
| | | | | | | | | | | | | * stream.c (trim_path_seps): New function. (stream_init): trim-path-seps intrinsic registered. * stream.c (trim_path_seps): Declared. * tests/018/path.tl: New tests. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* tests: Cygwin fixes.Kaz Kylheku2022-05-101-4/+9
| | | | | | | | | | | * tests/017/str-s.tl: Use (libc) not nil in with-dyn-lib. * tests/018/forkflush.tl: On Cygwin, produce canned output for first test case, because the real test case produces some DOS line endings that cause a mismatch. * tests/019/load-search.tl: Skip test case involving a directory with bad permissions being in the load search path.
* fork/streams: new failing test.Kaz Kylheku2022-04-232-0/+43
| | | | | | | | | | | | | | | | This test case exemplifies code that will work as expected when *stdout* is a TTY device, such that line buffering is in effect, but then break when standard output is redirected to a file. The issue is that the controlling process is not flushing its standard output when calling the external script, so the script's output gets placed ahead of the process' own earlier output. * tests/018/forkflush.tl: New file. * tests/018/forkflush.expected: New file.
* tests: test case for combining .tlo files.Kaz Kylheku2022-02-141-0/+27
| | | | * tests/018/combine-tlo.tl: New file.
* path-equal: enable and fix failing tests.Kaz Kylheku2021-10-201-3/+2
| | | | | | | | | * stdlib/copy-file.tl (path-simplify): If the incoming path's first component is "", it is absolute; in that case swallow any components that go above. * tests/018/path-equal.tl: Uncomment two previously failing tests.
* pic: support parenthesis negative notation.Kaz Kylheku2021-10-191-3/+19
| | | | | | | | | | * pic.tl (add-neg-parens): New system function. (expand-neg-parens): New macro. (expand-pic): New numeric pattern with parentheses. Also suport escaping of parentheses. (pic): Recognize parenthesized numeric pattern here also. * tests/018/format.tl: New tests.
* pic: digit separator tests.Kaz Kylheku2021-10-181-0/+24
| | | | * tests/018/format.tl: New test cases.
* pic: preserve decimal period in ### overflow fill.Kaz Kylheku2021-10-181-4/+4
| | | | | | | | | | | | | | | | | | * pic.tl (expand-pic-num): If the overflowing field specifies a decimal point other than in the rightmost position, then stick one into the fill pattern. The motivation for this is that it harmonizes with the digit separators. The new digit separator insertion logic will treat the # characters like digits, and requires the embedded decimal in order to work properly. Allowing digit separation to work in the fill pattern will make for better looking output in column displays. That's the same reason why we insert digit separators among leading zeros. * tests/018/format.tl: Overflow test cases updated in light of this requirement change. * txr.1: Documented.
* New path-equal function.Kaz Kylheku2021-10-101-0/+18
| | | | | | | | | | * lisplib.c (copy_file_set_entries): Add path-equal to autoload symbols. * stdlib/copy-file.tl (path-equal): New function. * tests/018/path-equal.tl: New file. * txr.1: Documented.
* cygwin: environment-related fixes.Kaz Kylheku2021-10-051-13/+14
| | | | | | | * stream.c (run): replace_env takes only one argument. * tests/018/process.tl: *child-env* tests are reporting some extra environment variables on Windows; let's just disable them.
* New variable: *child-env*.Kaz Kylheku2021-09-261-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | This specifies the environment to be used for executing programs. * stream.c (open_subprocess, run): Check *child-env* variable and if other than t, then install the environment before execvp. In the spawn-based version of run, we save and restore the environment around the spawn call, if *child-env* is in effect. * sysif.c (child_env_s): New symbol variable. (exec_wrap): If *child-env* is other than t, then save the environment in a list, and install the specified environment before calling execvp. If that function returns, restore the environbment. * sysif.h (child_env_s): Declared. (child_env): New macro. * tests/018/process.tl: New tests. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* path-search: rewrite in C with saner semantics.Kaz Kylheku2021-09-251-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | The new function: - just returns the name if it contains path name components. - returns nil if the name is "." or "..". - tests for existence only, not permission to execute. * lisplib.c (path_test_set_entries): Do not auto-load path-test module on the path-search symbol, since it is no longer implemented there. * stdlib/path-test.tl (path-search): Function removed. * stream.c (path_var_sep_char): New global variable. (path_search): New function. (detect_path_separators): Also set path_var_sep_char to semicolon on Cygnal. (stream-init): Register path-search intrinsic here now. * stream.h (path_var_sep_char, path_search): Declared. * tests/018/path-test.tl: New tests. * txr.1: Documentation revised for path-search.
* exceptions: hack to store errno in string object.Kaz Kylheku2021-09-071-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Basic idea: when we throw an exception that pertains to a system error which has an errno code, we can stick the errno into the memory area of the character string, into the wchar_t that immediately follows the null terminator. We can do this because strings track their actual allocation size. A pair of setter/getter functions to set and retrieve this value are provided, and all functions in the code which can set such a code are updated to do so, simply by calling the newly added uw_ethrowf that drop-in replaces for uw_throwf. * lib.[ch] (string_set_code, string_get_code): New functions. * unwind.[ch] (uw_ethrowf): New function. * eval.c (eval_init): Register string-set-code and string-get-code intrinsics. * ftw.c (ftw_wrap): Switch to uw_ethrowf. * parser.c (open_txr_file): Likewise. * socket.c (dgram_overflow): Store the ENOBUFS error in errno, and use uw_ethrowf instead uw_throwf. (dgram_get_byte_callback, dgram_flush, sock_bind, to_connect, open_sockfd, sock_connect, sock_listen, sock_accept, sock_shutdown, sock_timeout, socketpair_wrap): Switch to uw_ethrowf. * stream.c (dev_null_get_fd, stdio_maybe_read_error, stdio_maybe_error, stdio_close, pipe_close, open_directory, open_file, open_fileno, open_tail, fds_subst, open_subprocess, open_command, remove_path, rename_path, tmpfile_wrap, mkdtemp_wrap, mkstemp_wrap): Switch to uw_ethrowf. * sysif.c (mkdir_wrap, ensure_dir, chdir_wrap, getcwd_wrap, rmdir_wrap, mknod_wrap, mkfifo_wrap, chmod_wrap, do_chown, symlink_wrap, link_wrap, readlink_wrap, close_wrap, val exec_wrap, stat_impl, do_utimes, pipe_wrap, poll_wrap, getgroups_wrap, setuid_wrap, seteuid_wrap, setgid_wrap, setegid_wrap, setgroups_wrap, getresuid_wrap, setresuid_wrap, setresgid_wrap, crypt_wrap, uname_wrap, opendir_wrap, getrlimit_wrap, setrlimit_wrap): Likewise. * termios.c (tcgetattr_wrap, tcsetattr_wrap, tcsendbreak_wrap, tcdrain_wrap, tcflush_wrap, tcflow_wrap): Likewise. * tests/018/errno.tl: New file. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* format: bug: sign not reset before each conversion.Kaz Kylheku2021-08-161-0/+4
| | | | | | | | | | | | | | | | | | For instance, this bad output is produced: (pic "+0####.## <<<<<" 123 1) -> "+00123.00 +1 " The second argument should not have any leading + sign. * stream.c (formatv): For each new conversion specifier introduced by ~, reset the sign variable to zero also. That's the semantic change here, occluded by the fact that I'm rearranging the declaration of the variables, adding comments, and condensing the assignments while also getting them into the same order as the declarations, in order that this sort of bug does not creep in in the future, should another such variable be added. * tests/018/format.tl: Adding correct version of above test case.
* tests: support BSD flavors loosely, not just OpenBSD.Kaz Kylheku2021-08-131-1/+1
| | | | | | | | | | | | * tests/common.tl (os-symbol): Look for the substring BSD in the system name, and map to symbol :bsd. Do not produce the :openbsd symbol. * tests/014/socket-basic.tl: Refer to :bsd, not :openbsd. * tests/017/glob-carray.tl: Likewise. * tests/018/chmod.tl: Likewise.
* pure-rel-path-p: add tests.Kaz Kylheku2021-07-221-0/+23
| | | | * tests/018/path.tl: New tests.
* paths: new tests.Kaz Kylheku2021-07-151-0/+46
| | | | | * tests/018/path.tl: test coverage for abs-path-p and portable-abs-path-p.
* tests: guix fixes.Kaz Kylheku2021-07-132-1/+7
| | | | | | | | | | | | | | | | * tests/002/query-1.txr: Skip test if an executable /bin/sh doesn't exist, rather than the bogus reasons. * tests/010/json.tl: Change the condition for the command-put-json tests: not whether cat is found in the search path but whether /bin/sh exists and is executable. * tests/017/realpath.tl: Also quit if /usr/bin doesn't exist. * tests/018/path-test.tl: Exit succesfully if /bin/sh does not exist. Revert the earlier change. * tests/018/process.tl: Quit if no executable /bin/sh exists.
* tests: weaken condition in path search for sh.Kaz Kylheku2021-07-121-1/+1
| | | | | | | * tests/018/path-test.tl: In the Guix build environment, the shell might be found at a path not ending in bin. Let's ust test for ending in /bin. Reported and investigated by Paul A. Patience.
* New function: add-suffix.Kaz Kylheku2021-07-101-0/+19
| | | | | | | | | | | * stream.c, stream.h (add_suffix): New function. (stream_init): add-suffix intrinsic registered. * tests/018/path.tl: Tests. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* New functions: trim-short-suffix, trim-long-suffix.Kaz Kylheku2021-07-101-0/+48
| | | | | | | | | | | | | | | * lib.c, lib.h (chk_substrdup): New function. * stream.c, stream.h (trim_short_suffix, trim_long_suffix): New functions. (stream_init): trim-short-suffix and trim-long-suffix intrinsics registered. * tests/018/path.tl: New tests. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* suffix functions: new test cases.Kaz Kylheku2021-07-101-1/+3
| | | | | * tests/018/path.tl: New cases covering dotted name situation, which is not a suffix, but can have a suffix.
* tests: fix malformed chmod.tl.Paul A. Patience2021-07-051-11/+11
| | | | | | * tests/018/chmod.tl (os): Fix final parentheses of defvarl form accidentally encompassing the rest of the source file. Replace tabs with spaces.
* path-search: fix test for sh not being in /bin.Kaz Kylheku2021-07-041-1/+1
| | | | | * tests/018/path-test.tl: Check that the result of a path-search for "sh" only ends in "/bin/sh", not that it is precisely "/bin/sh".
* suffix functions: ignore trailing slashes.Kaz Kylheku2021-07-031-2/+16
| | | | | | | | | | | | | | | | Another requirements tweak to short-suffix and long-suffix: ignore one or more trailing slashes, instead of just one. This harmonizes with base-name, which does same, that requirement being copies from the POSIX basename utility. * stream.c (short_suffix, long_suffix): If sl points to a trailing slash which is the start of a suffix that consists of nothing but trailing slashes, then we pretend it isn't there. * tests/018/path.tl: Adjusted two existing test cases, and added more. * txr.1: Documented.
* path-cat: becomes variadic.Kaz Kylheku2021-06-291-0/+32
| | | | | | | | | | | | | * stream.c (path_vcat): New static function. (stream_init): Register path-cat instrinsic to path_vcat rather than path_cat. * tests/018/path.tl: path-cat tests: all examples from documentation, plus others. * txr.1: Documented existing behaviors that were not clear, like when inputs are empty. Documented new variadic semantics. Examples added.
* New function: path-search.Kaz Kylheku2021-06-291-0/+15
| | | | | | | | | | | | * lisplib.c (path_test_set_entries): Autoload on path-search. * stdlib/path-test.tl (path-search): New function. * tests/018/path-test.tl: New file. * txr.1: Documented. * stdlib/doc-lookup.tl: Updated.
* base-name: bug with empty string suffix.Kaz Kylheku2021-06-261-0/+28
| | | | | | | | * stream.c (base_name): We must check for a zero length suffix, otherwise sub(base, zero, neg(length(suff))) produces an empty string. * tests/018/path.tl: Test cases for base-name.
* suffix functions: requirements change.Kaz Kylheku2021-06-261-22/+22
| | | | | | | | | | | | | | | | | The short-suffix and long-suffix functions will now return the suffix including the leading period. This was a suggestion from user Paul A. Patience, which is a good requirement. Since these functions were newly introduced just the last release, I'm not going to provide backwards compatibility switching for them. * stream.c (short_suffix, long_suffix): Duplicate the suffix starting at the dot, not dot + 1. * tests/018/path.tl: Test cases updated. * txr.1: Documentation updated.
* suffix functions: leading dot is not delimiterKaz Kylheku2021-06-261-13/+23
| | | | | | | | | | * stream.c (short_suffix, long_suffix): Do not treat the starting dot of the last componet as a suffix delimiter. * tests/018/path.tl: Test cases edited to reflect requirements change; new tests added. * txr.1: Updated.
* short-suffix, long-suffix: no match across slash.Kaz Kylheku2021-06-221-0/+26
| | | | | | | | | | | * stream.c (short_suffix, long_suffix): Take path separator characters into account; the suffix must not span across separators. The trailing separator must also not appear in the suffix. * tests/018/path.tl: Test cases added. * txr.1: Redocumented.
* New functions: long-suffix, short-suffix.Kaz Kylheku2021-06-221-0/+34
| | | | | | | | | | | | | | * stream.c (short_suffix, long_suffix): New functions. (stream_init): short-suffix and long-suffix intrinsics registered. * stream.c (short_suffix, long_suffix): Declared. * tests/018/path.tl: New file. * txr.1: Documented. * share/txr/stdlib/doc-syms.tl: Updated.
* subprocesses: cygwin fixes.Kaz Kylheku2021-06-201-3/+9
| | | | | | | | | | | | | | * stream.c (fds_subst, fds_swizzle, fds_restore): These functions are used on Cygwin by some functions that are based on spawn, and so must be avaiable. * tests/018/process.tl: Two fixes here. Firstly, the 1>&1 redirection in one of the tests should be 1>&2 on all platforms. That a temporary edit left behind from massaging the tests and the code. Secondly, some weird results are observed on Cygwin. The communication with the child sees an extra carriage return and space sneak in. I'm just codifying this as Cygwin's way of passing the test case; it's likely unfixable at the application level.
* subprocesses: a few test cases.Kaz Kylheku2021-06-201-0/+18
| | | | * tests/018/process.tl: New file.
* format: revise numeric handling.Kaz Kylheku2021-06-141-5/+96
| | | | | | | | | | | | | | | | | | | | | | | There are a number of issues, such as left adjustment not working and such. This needs a better treatment from the requirements level, through to a set of test cases. * stream.c (max, min): Macros macros added, in their usual form. (vformat_num): Implement new rules which suppress the zero and space characters used in place of a sign if they overflow the field width. (formatv): Clamp integer precision field to width - 1 for integers, for consistency with floating-point handling. For floating-point values under ~a and ~s, do not force the second stage precision to width - 1; only clamp it if it is greater. * format.tl: Numerous new tests. * txr.1: Significant redocumenting of this area. The handling of numbers is described as a two stage process, clarifying the changing role of "precision" in the two stages.
* format: new precision - character for zero.Kaz Kylheku2021-06-141-0/+5
| | | | | | | | | | | * stream.c (formatv): The - precision option character produces a "sign" that is a zero. If this is used with leading zeros, it will avoid generating a space. The requirements can use improvement here, but one step at a time. * tests/018/format.tl: Some tests. * txr.1: Documented.
* pic: support quasiliteral as format string.Kaz Kylheku2021-06-111-0/+5
| | | | | | | | | | | | * share/txr/stdlib/pic.tl (pic): Refactor string compilation code into local function which has access to the overall argument list. Recognize the quasiliteral case and translate by compiling all the string parts, then forming a recombined quasiliteral where the compiled parts are substituted. * tests/018/format.tl: test case for this. * txr.1: Documented.
* pic: allow trailing exclamation.Kaz Kylheku2021-06-111-0/+5
| | | | | | | | | | * share/txr/stdlib/pic.tl (expand-pic-num, expand-pic, pic): Allow ### to be followed by a single !. This is not counted toward the field width. * tests/018/format.tl: Cover with some tests. * txr.1: Doc updated.
* pic: clarification and tests.Kaz Kylheku2021-06-111-0/+6
| | | | | | | | * tests/018/format.tl: Add tests which combine overflow flagging with +/-. The space generated by - contributes to overflow. * txr.1: Clarify overflow issue in documentation.
* pic: test cases and fixes.Kaz Kylheku2021-06-111-0/+88
| | | | | | | | | | | | | | | | | | * share/txr/stdlib/pic.tl (expand-pic-num): Bug: when a field overflows, the (rest ...) call truncates the leftmost digit. A failing test case is (pic "#.#" 12) which produces "2.0" instead of "12.0". Firstly, we only need that logic at all in the zero padding case. When the number is positive, we stick in the + request, so we are sure to get a + character. The rest call then predictably chops off the + rather than a digit. (pic-join-opt): Fix two bugs here in the string-string combine case: using s2 instead of s1, and not splicing in rest. (expand-pic, pic): Implement tightening for escape sequences. If ~ is not followed by anything, or not followed by the documented characters for escaping, it is erroneous. * format.tl: Battery of new tests.
* format: ~x/~X specifiers support buffers.Kaz Kylheku2021-05-041-0/+29
| | | | | | | | | | | | | * buf.c (buf_hex): New function. * buf.h (buf_hex): Declared. * stream.c (formatv): Support printing of buffers in hex via temporary buffer containing hex characters, similarly to how bignums are handled. * tests/018/format.tl: New file, providing some coverage over new and affected code.
* rel-path: bugfixes.Kaz Kylheku2021-05-031-1/+6
| | | | | | | | | | | | | | | * share/txr/stdlib/copy-file.tl: When removing .. components, a dotdot must only cancel preceding non-dotdot. We must check not only that the out stack is not empty but that the top element isn't dotdot. Also, eliminate empty components, like the documentation says. Lastly, we must check for the impossible cases, when the from path uses .. components that are impossible to navigate backwards to form a relative path. * tests/018/rel-path.tl: Test cases added. * txr.1: Updated with additional descriptions, fixes and examples.
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