From 65f7767a914144ae303f7b9ae81865061793dcb9 Mon Sep 17 00:00:00 2001 From: Andreas Schwab Date: Tue, 16 Sep 2014 11:17:04 +0200 Subject: Fix handling of collating elements in fnmatch (bug 17396, bug 16976) This fixes the same bug in fnmatch that was fixed by commit 7e2f0d2d77 for regexp matching. As a side effect it also removes the use of an unbound VLA. --- posix/Makefile | 4 +- posix/fnmatch.c | 6 +- posix/fnmatch_loop.c | 228 ++++++++++++++++++++------------------------------- posix/tst-fnmatch4.c | 41 +++++++++ posix/tst-fnmatch5.c | 46 +++++++++++ 5 files changed, 182 insertions(+), 143 deletions(-) create mode 100644 posix/tst-fnmatch4.c create mode 100644 posix/tst-fnmatch5.c (limited to 'posix') diff --git a/posix/Makefile b/posix/Makefile index cfd914ff21..873947f72e 100644 --- a/posix/Makefile +++ b/posix/Makefile @@ -93,6 +93,7 @@ tests := test-errno tstgetopt testfnm runtests runptests \ bug-getopt5 tst-getopt_long1 bug-regex34 bug-regex35 \ tst-pathconf tst-rxspencer-no-utf8 \ tst-fnmatch3 bug-regex36 \ + tst-fnmatch4 tst-fnmatch5 \ tst-posix_spawn-fd tst-posix_spawn-setsid \ tst-posix_fadvise tst-posix_fadvise64 \ tst-sysconf-empty-chroot tst-glob_symlinks tst-fexecve \ @@ -168,7 +169,8 @@ $(objpfx)wordexp-tst.out: wordexp-tst.sh $(objpfx)wordexp-test endif LOCALES := cs_CZ.UTF-8 da_DK.ISO-8859-1 de_DE.ISO-8859-1 de_DE.UTF-8 \ - en_US.UTF-8 es_US.ISO-8859-1 es_US.UTF-8 ja_JP.EUC-JP tr_TR.UTF-8 + en_US.UTF-8 es_US.ISO-8859-1 es_US.UTF-8 ja_JP.EUC-JP tr_TR.UTF-8 \ + cs_CZ.ISO-8859-2 include ../gen-locales.mk $(objpfx)bug-regex1.out: $(gen-locales) diff --git a/posix/fnmatch.c b/posix/fnmatch.c index 7b225cf2ba..a58e1743ce 100644 --- a/posix/fnmatch.c +++ b/posix/fnmatch.c @@ -53,7 +53,6 @@ we support a correct implementation only in glibc. */ #ifdef _LIBC # include "../locale/localeinfo.h" -# include "../locale/elem-hash.h" # include "../locale/coll-lookup.h" # include @@ -237,6 +236,11 @@ __wcschrnul (const wchar_t *s, wint_t c) # define MEMPCPY(D, S, N) __wmempcpy (D, S, N) # define MEMCHR(S, C, N) __wmemchr (S, C, N) # define STRCOLL(S1, S2) wcscoll (S1, S2) +# ifdef _LIBC +# define WMEMCMP(S1, S2, N) __wmemcmp (S1, S2, N) +# else +# define WMEMCMP(S1, S2, N) wmemcmp (S1, S2, N) +# endif # define WIDE_CHAR_VERSION 1 /* Change the name the header defines so it doesn't conflict with the version included above. */ diff --git a/posix/fnmatch_loop.c b/posix/fnmatch_loop.c index f888c66dfb..fa39b21395 100644 --- a/posix/fnmatch_loop.c +++ b/posix/fnmatch_loop.c @@ -494,26 +494,12 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end, { int32_t table_size; const int32_t *symb_table; -# if WIDE_CHAR_VERSION - char str[c1]; - unsigned int strcnt; -# else -# define str (startp + 1) -# endif const unsigned char *extra; int32_t idx; int32_t elem; - int32_t second; - int32_t hash; - # if WIDE_CHAR_VERSION - /* We have to convert the name to a single-byte - string. This is possible since the names - consist of ASCII characters and the internal - representation is UCS4. */ - for (strcnt = 0; strcnt < c1; ++strcnt) - str[strcnt] = startp[1 + strcnt]; -#endif + CHAR *wextra; +# endif table_size = _NL_CURRENT_WORD (LC_COLLATE, @@ -525,71 +511,54 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end, _NL_CURRENT (LC_COLLATE, _NL_COLLATE_SYMB_EXTRAMB); - /* Locate the character in the hashing table. */ - hash = elem_hash (str, c1); - - idx = 0; - elem = hash % table_size; - if (symb_table[2 * elem] != 0) - { - second = hash % (table_size - 2) + 1; - - do - { - /* First compare the hashing value. */ - if (symb_table[2 * elem] == hash - && (c1 - == extra[symb_table[2 * elem + 1]]) - && memcmp (str, - &extra[symb_table[2 * elem - + 1] - + 1], c1) == 0) - { - /* Yep, this is the entry. */ - idx = symb_table[2 * elem + 1]; - idx += 1 + extra[idx]; - break; - } - - /* Next entry. */ - elem += second; - } - while (symb_table[2 * elem] != 0); - } + for (elem = 0; elem < table_size; elem++) + if (symb_table[2 * elem] != 0) + { + idx = symb_table[2 * elem + 1]; + /* Skip the name of collating element. */ + idx += 1 + extra[idx]; +# if WIDE_CHAR_VERSION + /* Skip the byte sequence of the + collating element. */ + idx += 1 + extra[idx]; + /* Adjust for the alignment. */ + idx = (idx + 3) & ~3; + + wextra = (CHAR *) &extra[idx + 4]; + + if (/* Compare the length of the sequence. */ + c1 == wextra[0] + /* Compare the wide char sequence. */ + && WMEMCMP (startp + 1, &wextra[1], + c1) == 0) + /* Yep, this is the entry. */ + break; +# else + if (/* Compare the length of the sequence. */ + c1 == extra[idx] + /* Compare the byte sequence. */ + && memcmp (startp + 1, + &extra[idx + 1], c1) == 0) + /* Yep, this is the entry. */ + break; +# endif + } - if (symb_table[2 * elem] != 0) + if (elem < table_size) { /* Compare the byte sequence but only if this is not part of a range. */ -# if WIDE_CHAR_VERSION - int32_t *wextra; + if (! is_range - idx += 1 + extra[idx]; - /* Adjust for the alignment. */ - idx = (idx + 3) & ~3; - - wextra = (int32_t *) &extra[idx + 4]; -# endif - - if (! is_range) - { # if WIDE_CHAR_VERSION - for (c1 = 0; - (int32_t) c1 < wextra[idx]; - ++c1) - if (n[c1] != wextra[1 + c1]) - break; - - if ((int32_t) c1 == wextra[idx]) - goto matched; + && WMEMCMP (n, &wextra[1], c1) == 0 # else - for (c1 = 0; c1 < extra[idx]; ++c1) - if (n[c1] != extra[1 + c1]) - break; - - if (c1 == extra[idx]) - goto matched; + && memcmp (n, &extra[idx + 1], c1) == 0 # endif + ) + { + n += c1 - 1; + goto matched; } /* Get the collation sequence value. */ @@ -597,9 +566,9 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end, # if WIDE_CHAR_VERSION cold = wextra[1 + wextra[idx]]; # else - /* Adjust for the alignment. */ idx += 1 + extra[idx]; - idx = (idx + 3) & ~4; + /* Adjust for the alignment. */ + idx = (idx + 3) & ~3; cold = *((int32_t *) &extra[idx]); # endif @@ -609,10 +578,10 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end, { /* No valid character. Match it as a single byte. */ - if (!is_range && *n == str[0]) + if (!is_range && *n == startp[1]) goto matched; - cold = str[0]; + cold = startp[1]; c = *p++; } else @@ -620,7 +589,6 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end, } } else -# undef str #endif { c = FOLD (c); @@ -712,25 +680,11 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end, { int32_t table_size; const int32_t *symb_table; -# if WIDE_CHAR_VERSION - char str[c1]; - unsigned int strcnt; -# else -# define str (startp + 1) -# endif const unsigned char *extra; int32_t idx; int32_t elem; - int32_t second; - int32_t hash; - # if WIDE_CHAR_VERSION - /* We have to convert the name to a single-byte - string. This is possible since the names - consist of ASCII characters and the internal - representation is UCS4. */ - for (strcnt = 0; strcnt < c1; ++strcnt) - str[strcnt] = startp[1 + strcnt]; + CHAR *wextra; # endif table_size = @@ -743,71 +697,63 @@ FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end, _NL_CURRENT (LC_COLLATE, _NL_COLLATE_SYMB_EXTRAMB); - /* Locate the character in the hashing - table. */ - hash = elem_hash (str, c1); - - idx = 0; - elem = hash % table_size; - if (symb_table[2 * elem] != 0) - { - second = hash % (table_size - 2) + 1; - - do - { - /* First compare the hashing value. */ - if (symb_table[2 * elem] == hash - && (c1 - == extra[symb_table[2 * elem + 1]]) - && memcmp (str, - &extra[symb_table[2 * elem + 1] - + 1], c1) == 0) - { - /* Yep, this is the entry. */ - idx = symb_table[2 * elem + 1]; - idx += 1 + extra[idx]; - break; - } - - /* Next entry. */ - elem += second; - } - while (symb_table[2 * elem] != 0); - } - - if (symb_table[2 * elem] != 0) - { - /* Compare the byte sequence but only if - this is not part of a range. */ + for (elem = 0; elem < table_size; elem++) + if (symb_table[2 * elem] != 0) + { + idx = symb_table[2 * elem + 1]; + /* Skip the name of collating + element. */ + idx += 1 + extra[idx]; # if WIDE_CHAR_VERSION - int32_t *wextra; - - idx += 1 + extra[idx]; - /* Adjust for the alignment. */ - idx = (idx + 3) & ~4; - - wextra = (int32_t *) &extra[idx + 4]; + /* Skip the byte sequence of the + collating element. */ + idx += 1 + extra[idx]; + /* Adjust for the alignment. */ + idx = (idx + 3) & ~3; + + wextra = (CHAR *) &extra[idx + 4]; + + if (/* Compare the length of the + sequence. */ + c1 == wextra[0] + /* Compare the wide char sequence. */ + && WMEMCMP (startp + 1, &wextra[1], + c1) == 0) + /* Yep, this is the entry. */ + break; +# else + if (/* Compare the length of the + sequence. */ + c1 == extra[idx] + /* Compare the byte sequence. */ + && memcmp (startp + 1, + &extra[idx + 1], c1) == 0) + /* Yep, this is the entry. */ + break; # endif + } + + if (elem < table_size) + { /* Get the collation sequence value. */ is_seqval = 1; # if WIDE_CHAR_VERSION cend = wextra[1 + wextra[idx]]; # else - /* Adjust for the alignment. */ idx += 1 + extra[idx]; - idx = (idx + 3) & ~4; + /* Adjust for the alignment. */ + idx = (idx + 3) & ~3; cend = *((int32_t *) &extra[idx]); # endif } - else if (symb_table[2 * elem] != 0 && c1 == 1) + else if (c1 == 1) { - cend = str[0]; + cend = startp[1]; c = *p++; } else return FNM_NOMATCH; } -# undef str } else { diff --git a/posix/tst-fnmatch4.c b/posix/tst-fnmatch4.c new file mode 100644 index 0000000000..370265ddf0 --- /dev/null +++ b/posix/tst-fnmatch4.c @@ -0,0 +1,41 @@ +/* Test for fnmatch handling of collating elements + Copyright (C) 2019 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include +#include +#include + +static void +do_test_locale (const char *locale) +{ + TEST_VERIFY_EXIT (setlocale (LC_ALL, locale) != NULL); + + TEST_VERIFY (fnmatch ("[[.ch.]]", "ch", 0) == 0); +} + +static int +do_test (void) +{ + do_test_locale ("cs_CZ.ISO-8859-2"); + do_test_locale ("cs_CZ.UTF-8"); + + return 0; +} + +#include diff --git a/posix/tst-fnmatch5.c b/posix/tst-fnmatch5.c new file mode 100644 index 0000000000..241371c752 --- /dev/null +++ b/posix/tst-fnmatch5.c @@ -0,0 +1,46 @@ +/* Test for fnmatch handling of collating elements + Copyright (C) 2019 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include +#include +#include +#include + +#define LENGTH 20000000 + +static char pattern[LENGTH + 7]; + +static int +do_test (void) +{ + TEST_VERIFY_EXIT (setlocale (LC_ALL, "en_US.UTF-8") != NULL); + + pattern[0] = '['; + pattern[1] = '['; + pattern[2] = '.'; + memset (pattern + 3, 'a', LENGTH); + pattern[LENGTH + 3] = '.'; + pattern[LENGTH + 4] = ']'; + pattern[LENGTH + 5] = ']'; + TEST_VERIFY (fnmatch (pattern, "a", 0) != 0); + + return 0; +} + +#include -- cgit v1.2.3