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1212 lines
45 KiB
C
1212 lines
45 KiB
C
/* Copyright (C) 1991-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifdef _LIBC
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# include <stdint.h>
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#endif
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struct STRUCT
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{
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const CHAR *pattern;
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const CHAR *string;
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bool no_leading_period;
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};
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/* Match STRING against the file name pattern PATTERN, returning zero if
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it matches, nonzero if not. */
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static int FCT (const CHAR *pattern, const CHAR *string,
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const CHAR *string_end, bool no_leading_period, int flags,
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struct STRUCT *ends, size_t alloca_used);
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static int EXT (INT opt, const CHAR *pattern, const CHAR *string,
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const CHAR *string_end, bool no_leading_period, int flags,
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size_t alloca_used);
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static const CHAR *END (const CHAR *patternp);
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static int
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FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end,
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bool no_leading_period, int flags, struct STRUCT *ends, size_t alloca_used)
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{
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const CHAR *p = pattern, *n = string;
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UCHAR c;
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#ifdef _LIBC
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# if WIDE_CHAR_VERSION
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const char *collseq = (const char *)
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_NL_CURRENT(LC_COLLATE, _NL_COLLATE_COLLSEQWC);
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# else
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const UCHAR *collseq = (const UCHAR *)
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_NL_CURRENT(LC_COLLATE, _NL_COLLATE_COLLSEQMB);
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# endif
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#endif
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while ((c = *p++) != L_('\0'))
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{
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bool new_no_leading_period = false;
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c = FOLD (c);
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switch (c)
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{
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case L_('?'):
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if (__glibc_unlikely (flags & FNM_EXTMATCH) && *p == '(')
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{
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int res = EXT (c, p, n, string_end, no_leading_period,
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flags, alloca_used);
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if (res != -1)
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return res;
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}
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if (n == string_end)
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return FNM_NOMATCH;
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else if (*n == L_('/') && (flags & FNM_FILE_NAME))
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return FNM_NOMATCH;
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else if (*n == L_('.') && no_leading_period)
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return FNM_NOMATCH;
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break;
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case L_('\\'):
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if (!(flags & FNM_NOESCAPE))
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{
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c = *p++;
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if (c == L_('\0'))
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/* Trailing \ loses. */
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return FNM_NOMATCH;
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c = FOLD (c);
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}
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if (n == string_end || FOLD ((UCHAR) *n) != c)
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return FNM_NOMATCH;
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break;
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case L_('*'):
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if (__glibc_unlikely (flags & FNM_EXTMATCH) && *p == '(')
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{
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int res = EXT (c, p, n, string_end, no_leading_period,
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flags, alloca_used);
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if (res != -1)
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return res;
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}
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else if (ends != NULL)
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{
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ends->pattern = p - 1;
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ends->string = n;
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ends->no_leading_period = no_leading_period;
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return 0;
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}
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if (n != string_end && *n == L_('.') && no_leading_period)
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return FNM_NOMATCH;
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for (c = *p++; c == L_('?') || c == L_('*'); c = *p++)
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{
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if (*p == L_('(') && (flags & FNM_EXTMATCH) != 0)
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{
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const CHAR *endp = END (p);
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if (endp != p)
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{
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/* This is a pattern. Skip over it. */
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p = endp;
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continue;
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}
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}
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if (c == L_('?'))
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{
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/* A ? needs to match one character. */
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if (n == string_end)
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/* There isn't another character; no match. */
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return FNM_NOMATCH;
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else if (*n == L_('/')
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&& __glibc_unlikely (flags & FNM_FILE_NAME))
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/* A slash does not match a wildcard under
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FNM_FILE_NAME. */
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return FNM_NOMATCH;
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else
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/* One character of the string is consumed in matching
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this ? wildcard, so *??? won't match if there are
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less than three characters. */
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++n;
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}
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}
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if (c == L_('\0'))
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/* The wildcard(s) is/are the last element of the pattern.
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If the name is a file name and contains another slash
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this means it cannot match, unless the FNM_LEADING_DIR
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flag is set. */
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{
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int result = (flags & FNM_FILE_NAME) == 0 ? 0 : FNM_NOMATCH;
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if (flags & FNM_FILE_NAME)
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{
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if (flags & FNM_LEADING_DIR)
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result = 0;
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else
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{
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if (MEMCHR (n, L_('/'), string_end - n) == NULL)
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result = 0;
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}
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}
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return result;
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}
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else
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{
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const CHAR *endp;
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struct STRUCT end;
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end.pattern = NULL;
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endp = MEMCHR (n, (flags & FNM_FILE_NAME) ? L_('/') : L_('\0'),
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string_end - n);
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if (endp == NULL)
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endp = string_end;
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if (c == L_('[')
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|| (__glibc_unlikely (flags & FNM_EXTMATCH)
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&& (c == L_('@') || c == L_('+') || c == L_('!'))
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&& *p == L_('(')))
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{
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int flags2 = ((flags & FNM_FILE_NAME)
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? flags : (flags & ~FNM_PERIOD));
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for (--p; n < endp; ++n, no_leading_period = false)
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if (FCT (p, n, string_end, no_leading_period, flags2,
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&end, alloca_used) == 0)
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goto found;
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}
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else if (c == L_('/') && (flags & FNM_FILE_NAME))
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{
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while (n < string_end && *n != L_('/'))
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++n;
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if (n < string_end && *n == L_('/')
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&& (FCT (p, n + 1, string_end, flags & FNM_PERIOD, flags,
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NULL, alloca_used) == 0))
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return 0;
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}
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else
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{
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int flags2 = ((flags & FNM_FILE_NAME)
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? flags : (flags & ~FNM_PERIOD));
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if (c == L_('\\') && !(flags & FNM_NOESCAPE))
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c = *p;
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c = FOLD (c);
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for (--p; n < endp; ++n, no_leading_period = false)
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if (FOLD ((UCHAR) *n) == c
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&& (FCT (p, n, string_end, no_leading_period, flags2,
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&end, alloca_used) == 0))
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{
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found:
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if (end.pattern == NULL)
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return 0;
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break;
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}
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if (end.pattern != NULL)
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{
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p = end.pattern;
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n = end.string;
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no_leading_period = end.no_leading_period;
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continue;
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}
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}
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}
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/* If we come here no match is possible with the wildcard. */
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return FNM_NOMATCH;
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case L_('['):
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{
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/* Nonzero if the sense of the character class is inverted. */
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const CHAR *p_init = p;
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const CHAR *n_init = n;
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bool not;
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CHAR cold;
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UCHAR fn;
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if (posixly_correct == 0)
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posixly_correct = getenv ("POSIXLY_CORRECT") != NULL ? 1 : -1;
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if (n == string_end)
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return FNM_NOMATCH;
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if (*n == L_('.') && no_leading_period)
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return FNM_NOMATCH;
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if (*n == L_('/') && (flags & FNM_FILE_NAME))
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/* '/' cannot be matched. */
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return FNM_NOMATCH;
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not = (*p == L_('!') || (posixly_correct < 0 && *p == L_('^')));
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if (not)
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++p;
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fn = FOLD ((UCHAR) *n);
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c = *p++;
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for (;;)
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{
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if (!(flags & FNM_NOESCAPE) && c == L_('\\'))
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{
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if (*p == L_('\0'))
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return FNM_NOMATCH;
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c = FOLD ((UCHAR) *p);
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++p;
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goto normal_bracket;
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}
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else if (c == L_('[') && *p == L_(':'))
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{
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/* Leave room for the null. */
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CHAR str[CHAR_CLASS_MAX_LENGTH + 1];
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size_t c1 = 0;
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wctype_t wt;
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const CHAR *startp = p;
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for (;;)
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{
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if (c1 == CHAR_CLASS_MAX_LENGTH)
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/* The name is too long and therefore the pattern
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is ill-formed. */
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return FNM_NOMATCH;
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c = *++p;
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if (c == L_(':') && p[1] == L_(']'))
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{
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p += 2;
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break;
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}
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if (c < L_('a') || c >= L_('z'))
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{
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/* This cannot possibly be a character class name.
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Match it as a normal range. */
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p = startp;
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c = L_('[');
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goto normal_bracket;
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}
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str[c1++] = c;
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}
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str[c1] = L_('\0');
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wt = IS_CHAR_CLASS (str);
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if (wt == 0)
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/* Invalid character class name. */
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return FNM_NOMATCH;
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#if defined _LIBC && ! WIDE_CHAR_VERSION
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/* The following code is glibc specific but does
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there a good job in speeding up the code since
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we can avoid the btowc() call. */
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if (_ISCTYPE ((UCHAR) *n, wt))
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goto matched;
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#else
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if (iswctype (BTOWC ((UCHAR) *n), wt))
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goto matched;
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#endif
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c = *p++;
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}
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#ifdef _LIBC
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else if (c == L_('[') && *p == L_('='))
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{
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/* It's important that STR be a scalar variable rather
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than a one-element array, because GCC (at least 4.9.2
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-O2 on x86-64) can be confused by the array and
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diagnose a "used initialized" in a dead branch in the
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findidx function. */
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UCHAR str;
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uint32_t nrules =
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_NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
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const CHAR *startp = p;
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c = *++p;
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if (c == L_('\0'))
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{
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p = startp;
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c = L_('[');
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goto normal_bracket;
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}
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str = c;
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c = *++p;
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if (c != L_('=') || p[1] != L_(']'))
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{
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p = startp;
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c = L_('[');
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goto normal_bracket;
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}
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p += 2;
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if (nrules == 0)
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{
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if ((UCHAR) *n == str)
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goto matched;
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}
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else
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{
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const int32_t *table;
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# if WIDE_CHAR_VERSION
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const int32_t *weights;
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const wint_t *extra;
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# else
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const unsigned char *weights;
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const unsigned char *extra;
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# endif
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const int32_t *indirect;
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int32_t idx;
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const UCHAR *cp = (const UCHAR *) &str;
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# if WIDE_CHAR_VERSION
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table = (const int32_t *)
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_NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEWC);
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weights = (const int32_t *)
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_NL_CURRENT (LC_COLLATE, _NL_COLLATE_WEIGHTWC);
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extra = (const wint_t *)
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_NL_CURRENT (LC_COLLATE, _NL_COLLATE_EXTRAWC);
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indirect = (const int32_t *)
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_NL_CURRENT (LC_COLLATE, _NL_COLLATE_INDIRECTWC);
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# else
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table = (const int32_t *)
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_NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
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|
weights = (const unsigned char *)
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_NL_CURRENT (LC_COLLATE, _NL_COLLATE_WEIGHTMB);
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|
extra = (const unsigned char *)
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_NL_CURRENT (LC_COLLATE, _NL_COLLATE_EXTRAMB);
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|
indirect = (const int32_t *)
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|
_NL_CURRENT (LC_COLLATE, _NL_COLLATE_INDIRECTMB);
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|
# endif
|
|
|
|
idx = FINDIDX (table, indirect, extra, &cp, 1);
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if (idx != 0)
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{
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/* We found a table entry. Now see whether the
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|
character we are currently at has the same
|
|
equivalence class value. */
|
|
int len = weights[idx & 0xffffff];
|
|
int32_t idx2;
|
|
const UCHAR *np = (const UCHAR *) n;
|
|
|
|
idx2 = FINDIDX (table, indirect, extra,
|
|
&np, string_end - n);
|
|
if (idx2 != 0
|
|
&& (idx >> 24) == (idx2 >> 24)
|
|
&& len == weights[idx2 & 0xffffff])
|
|
{
|
|
int cnt = 0;
|
|
|
|
idx &= 0xffffff;
|
|
idx2 &= 0xffffff;
|
|
|
|
while (cnt < len
|
|
&& (weights[idx + 1 + cnt]
|
|
== weights[idx2 + 1 + cnt]))
|
|
++cnt;
|
|
|
|
if (cnt == len)
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|
goto matched;
|
|
}
|
|
}
|
|
}
|
|
|
|
c = *p++;
|
|
}
|
|
#endif
|
|
else if (c == L_('\0'))
|
|
{
|
|
/* [ unterminated, treat as normal character. */
|
|
p = p_init;
|
|
n = n_init;
|
|
c = L_('[');
|
|
goto normal_match;
|
|
}
|
|
else
|
|
{
|
|
bool is_range = false;
|
|
|
|
#ifdef _LIBC
|
|
bool is_seqval = false;
|
|
|
|
if (c == L_('[') && *p == L_('.'))
|
|
{
|
|
uint32_t nrules =
|
|
_NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
|
|
const CHAR *startp = p;
|
|
size_t c1 = 0;
|
|
|
|
while (1)
|
|
{
|
|
c = *++p;
|
|
if (c == L_('.') && p[1] == L_(']'))
|
|
{
|
|
p += 2;
|
|
break;
|
|
}
|
|
if (c == '\0')
|
|
return FNM_NOMATCH;
|
|
++c1;
|
|
}
|
|
|
|
/* We have to handling the symbols differently in
|
|
ranges since then the collation sequence is
|
|
important. */
|
|
is_range = *p == L_('-') && p[1] != L_('\0');
|
|
|
|
if (nrules == 0)
|
|
{
|
|
/* There are no names defined in the collation
|
|
data. Therefore we only accept the trivial
|
|
names consisting of the character itself. */
|
|
if (c1 != 1)
|
|
return FNM_NOMATCH;
|
|
|
|
if (!is_range && *n == startp[1])
|
|
goto matched;
|
|
|
|
cold = startp[1];
|
|
c = *p++;
|
|
}
|
|
else
|
|
{
|
|
int32_t table_size;
|
|
const int32_t *symb_table;
|
|
const unsigned char *extra;
|
|
int32_t idx;
|
|
int32_t elem;
|
|
# if WIDE_CHAR_VERSION
|
|
CHAR *wextra;
|
|
# endif
|
|
|
|
table_size =
|
|
_NL_CURRENT_WORD (LC_COLLATE,
|
|
_NL_COLLATE_SYMB_HASH_SIZEMB);
|
|
symb_table = (const int32_t *)
|
|
_NL_CURRENT (LC_COLLATE,
|
|
_NL_COLLATE_SYMB_TABLEMB);
|
|
extra = (const unsigned char *)
|
|
_NL_CURRENT (LC_COLLATE,
|
|
_NL_COLLATE_SYMB_EXTRAMB);
|
|
|
|
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 (elem < table_size)
|
|
{
|
|
/* Compare the byte sequence but only if
|
|
this is not part of a range. */
|
|
if (! is_range
|
|
|
|
# if WIDE_CHAR_VERSION
|
|
&& __wmemcmp (n, &wextra[1], c1) == 0
|
|
# else
|
|
&& memcmp (n, &extra[idx + 1], c1) == 0
|
|
# endif
|
|
)
|
|
{
|
|
n += c1 - 1;
|
|
goto matched;
|
|
}
|
|
|
|
/* Get the collation sequence value. */
|
|
is_seqval = true;
|
|
# if WIDE_CHAR_VERSION
|
|
cold = wextra[1 + wextra[0]];
|
|
# else
|
|
idx += 1 + extra[idx];
|
|
/* Adjust for the alignment. */
|
|
idx = (idx + 3) & ~3;
|
|
cold = *((int32_t *) &extra[idx]);
|
|
# endif
|
|
|
|
c = *p++;
|
|
}
|
|
else if (c1 == 1)
|
|
{
|
|
/* No valid character. Match it as a
|
|
single byte. */
|
|
if (!is_range && *n == startp[1])
|
|
goto matched;
|
|
|
|
cold = startp[1];
|
|
c = *p++;
|
|
}
|
|
else
|
|
return FNM_NOMATCH;
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
c = FOLD (c);
|
|
normal_bracket:
|
|
|
|
/* We have to handling the symbols differently in
|
|
ranges since then the collation sequence is
|
|
important. */
|
|
is_range = (*p == L_('-') && p[1] != L_('\0')
|
|
&& p[1] != L_(']'));
|
|
|
|
if (!is_range && c == fn)
|
|
goto matched;
|
|
|
|
#if _LIBC
|
|
/* This is needed if we goto normal_bracket; from
|
|
outside of is_seqval's scope. */
|
|
is_seqval = false;
|
|
#endif
|
|
cold = c;
|
|
c = *p++;
|
|
}
|
|
|
|
if (c == L_('-') && *p != L_(']'))
|
|
{
|
|
#if _LIBC
|
|
/* We have to find the collation sequence
|
|
value for C. Collation sequence is nothing
|
|
we can regularly access. The sequence
|
|
value is defined by the order in which the
|
|
definitions of the collation values for the
|
|
various characters appear in the source
|
|
file. A strange concept, nowhere
|
|
documented. */
|
|
uint32_t fcollseq;
|
|
uint32_t lcollseq;
|
|
UCHAR cend = *p++;
|
|
|
|
# if WIDE_CHAR_VERSION
|
|
/* Search in the 'names' array for the characters. */
|
|
fcollseq = __collseq_table_lookup (collseq, fn);
|
|
if (fcollseq == ~((uint32_t) 0))
|
|
/* XXX We don't know anything about the character
|
|
we are supposed to match. This means we are
|
|
failing. */
|
|
goto range_not_matched;
|
|
|
|
if (is_seqval)
|
|
lcollseq = cold;
|
|
else
|
|
lcollseq = __collseq_table_lookup (collseq, cold);
|
|
# else
|
|
fcollseq = collseq[fn];
|
|
lcollseq = is_seqval ? cold : collseq[(UCHAR) cold];
|
|
# endif
|
|
|
|
is_seqval = false;
|
|
if (cend == L_('[') && *p == L_('.'))
|
|
{
|
|
uint32_t nrules =
|
|
_NL_CURRENT_WORD (LC_COLLATE,
|
|
_NL_COLLATE_NRULES);
|
|
const CHAR *startp = p;
|
|
size_t c1 = 0;
|
|
|
|
while (1)
|
|
{
|
|
c = *++p;
|
|
if (c == L_('.') && p[1] == L_(']'))
|
|
{
|
|
p += 2;
|
|
break;
|
|
}
|
|
if (c == '\0')
|
|
return FNM_NOMATCH;
|
|
++c1;
|
|
}
|
|
|
|
if (nrules == 0)
|
|
{
|
|
/* There are no names defined in the
|
|
collation data. Therefore we only
|
|
accept the trivial names consisting
|
|
of the character itself. */
|
|
if (c1 != 1)
|
|
return FNM_NOMATCH;
|
|
|
|
cend = startp[1];
|
|
}
|
|
else
|
|
{
|
|
int32_t table_size;
|
|
const int32_t *symb_table;
|
|
const unsigned char *extra;
|
|
int32_t idx;
|
|
int32_t elem;
|
|
# if WIDE_CHAR_VERSION
|
|
CHAR *wextra;
|
|
# endif
|
|
|
|
table_size =
|
|
_NL_CURRENT_WORD (LC_COLLATE,
|
|
_NL_COLLATE_SYMB_HASH_SIZEMB);
|
|
symb_table = (const int32_t *)
|
|
_NL_CURRENT (LC_COLLATE,
|
|
_NL_COLLATE_SYMB_TABLEMB);
|
|
extra = (const unsigned char *)
|
|
_NL_CURRENT (LC_COLLATE,
|
|
_NL_COLLATE_SYMB_EXTRAMB);
|
|
|
|
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 (elem < table_size)
|
|
{
|
|
/* Get the collation sequence value. */
|
|
is_seqval = true;
|
|
# if WIDE_CHAR_VERSION
|
|
cend = wextra[1 + wextra[0]];
|
|
# else
|
|
idx += 1 + extra[idx];
|
|
/* Adjust for the alignment. */
|
|
idx = (idx + 3) & ~3;
|
|
cend = *((int32_t *) &extra[idx]);
|
|
# endif
|
|
}
|
|
else if (c1 == 1)
|
|
{
|
|
cend = startp[1];
|
|
c = *p++;
|
|
}
|
|
else
|
|
return FNM_NOMATCH;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!(flags & FNM_NOESCAPE) && cend == L_('\\'))
|
|
cend = *p++;
|
|
if (cend == L_('\0'))
|
|
return FNM_NOMATCH;
|
|
cend = FOLD (cend);
|
|
}
|
|
|
|
/* XXX It is not entirely clear to me how to handle
|
|
characters which are not mentioned in the
|
|
collation specification. */
|
|
if (
|
|
# if WIDE_CHAR_VERSION
|
|
lcollseq == 0xffffffff ||
|
|
# endif
|
|
lcollseq <= fcollseq)
|
|
{
|
|
/* We have to look at the upper bound. */
|
|
uint32_t hcollseq;
|
|
|
|
if (is_seqval)
|
|
hcollseq = cend;
|
|
else
|
|
{
|
|
# if WIDE_CHAR_VERSION
|
|
hcollseq =
|
|
__collseq_table_lookup (collseq, cend);
|
|
if (hcollseq == ~((uint32_t) 0))
|
|
{
|
|
/* Hum, no information about the upper
|
|
bound. The matching succeeds if the
|
|
lower bound is matched exactly. */
|
|
if (lcollseq != fcollseq)
|
|
goto range_not_matched;
|
|
|
|
goto matched;
|
|
}
|
|
# else
|
|
hcollseq = collseq[cend];
|
|
# endif
|
|
}
|
|
|
|
if (lcollseq <= hcollseq && fcollseq <= hcollseq)
|
|
goto matched;
|
|
}
|
|
# if WIDE_CHAR_VERSION
|
|
range_not_matched:
|
|
# endif
|
|
#else
|
|
/* We use a boring value comparison of the character
|
|
values. This is better than comparing using
|
|
'strcoll' since the latter would have surprising
|
|
and sometimes fatal consequences. */
|
|
UCHAR cend = *p++;
|
|
|
|
if (!(flags & FNM_NOESCAPE) && cend == L_('\\'))
|
|
cend = *p++;
|
|
if (cend == L_('\0'))
|
|
return FNM_NOMATCH;
|
|
|
|
/* It is a range. */
|
|
if ((UCHAR) cold <= fn && fn <= cend)
|
|
goto matched;
|
|
#endif
|
|
|
|
c = *p++;
|
|
}
|
|
}
|
|
|
|
if (c == L_(']'))
|
|
break;
|
|
}
|
|
|
|
if (!not)
|
|
return FNM_NOMATCH;
|
|
break;
|
|
|
|
matched:
|
|
/* Skip the rest of the [...] that already matched. */
|
|
while ((c = *p++) != L_(']'))
|
|
{
|
|
if (c == L_('\0'))
|
|
/* [... (unterminated) loses. */
|
|
return FNM_NOMATCH;
|
|
|
|
if (!(flags & FNM_NOESCAPE) && c == L_('\\'))
|
|
{
|
|
if (*p == L_('\0'))
|
|
return FNM_NOMATCH;
|
|
/* XXX 1003.2d11 is unclear if this is right. */
|
|
++p;
|
|
}
|
|
else if (c == L_('[') && *p == L_(':'))
|
|
{
|
|
int c1 = 0;
|
|
const CHAR *startp = p;
|
|
|
|
while (1)
|
|
{
|
|
c = *++p;
|
|
if (++c1 == CHAR_CLASS_MAX_LENGTH)
|
|
return FNM_NOMATCH;
|
|
|
|
if (*p == L_(':') && p[1] == L_(']'))
|
|
break;
|
|
|
|
if (c < L_('a') || c >= L_('z'))
|
|
{
|
|
p = startp - 2;
|
|
break;
|
|
}
|
|
}
|
|
p += 2;
|
|
}
|
|
else if (c == L_('[') && *p == L_('='))
|
|
{
|
|
c = *++p;
|
|
if (c == L_('\0'))
|
|
return FNM_NOMATCH;
|
|
c = *++p;
|
|
if (c != L_('=') || p[1] != L_(']'))
|
|
return FNM_NOMATCH;
|
|
p += 2;
|
|
}
|
|
else if (c == L_('[') && *p == L_('.'))
|
|
{
|
|
while (1)
|
|
{
|
|
c = *++p;
|
|
if (c == L_('\0'))
|
|
return FNM_NOMATCH;
|
|
|
|
if (c == L_('.') && p[1] == L_(']'))
|
|
break;
|
|
}
|
|
p += 2;
|
|
}
|
|
}
|
|
if (not)
|
|
return FNM_NOMATCH;
|
|
}
|
|
break;
|
|
|
|
case L_('+'):
|
|
case L_('@'):
|
|
case L_('!'):
|
|
if (__glibc_unlikely (flags & FNM_EXTMATCH) && *p == '(')
|
|
{
|
|
int res = EXT (c, p, n, string_end, no_leading_period, flags,
|
|
alloca_used);
|
|
if (res != -1)
|
|
return res;
|
|
}
|
|
goto normal_match;
|
|
|
|
case L_('/'):
|
|
if (NO_LEADING_PERIOD (flags))
|
|
{
|
|
if (n == string_end || c != (UCHAR) *n)
|
|
return FNM_NOMATCH;
|
|
|
|
new_no_leading_period = true;
|
|
break;
|
|
}
|
|
FALLTHROUGH;
|
|
default:
|
|
normal_match:
|
|
if (n == string_end || c != FOLD ((UCHAR) *n))
|
|
return FNM_NOMATCH;
|
|
}
|
|
|
|
no_leading_period = new_no_leading_period;
|
|
++n;
|
|
}
|
|
|
|
if (n == string_end)
|
|
return 0;
|
|
|
|
if ((flags & FNM_LEADING_DIR) && n != string_end && *n == L_('/'))
|
|
/* The FNM_LEADING_DIR flag says that "foo*" matches "foobar/frobozz". */
|
|
return 0;
|
|
|
|
return FNM_NOMATCH;
|
|
}
|
|
|
|
|
|
static const CHAR *
|
|
END (const CHAR *pattern)
|
|
{
|
|
const CHAR *p = pattern;
|
|
|
|
while (1)
|
|
if (*++p == L_('\0'))
|
|
/* This is an invalid pattern. */
|
|
return pattern;
|
|
else if (*p == L_('['))
|
|
{
|
|
/* Handle brackets special. */
|
|
if (posixly_correct == 0)
|
|
posixly_correct = getenv ("POSIXLY_CORRECT") != NULL ? 1 : -1;
|
|
|
|
/* Skip the not sign. We have to recognize it because of a possibly
|
|
following ']'. */
|
|
if (*++p == L_('!') || (posixly_correct < 0 && *p == L_('^')))
|
|
++p;
|
|
/* A leading ']' is recognized as such. */
|
|
if (*p == L_(']'))
|
|
++p;
|
|
/* Skip over all characters of the list. */
|
|
while (*p != L_(']'))
|
|
if (*p++ == L_('\0'))
|
|
/* This is no valid pattern. */
|
|
return pattern;
|
|
}
|
|
else if ((*p == L_('?') || *p == L_('*') || *p == L_('+') || *p == L_('@')
|
|
|| *p == L_('!')) && p[1] == L_('('))
|
|
{
|
|
p = END (p + 1);
|
|
if (*p == L_('\0'))
|
|
/* This is an invalid pattern. */
|
|
return pattern;
|
|
}
|
|
else if (*p == L_(')'))
|
|
break;
|
|
|
|
return p + 1;
|
|
}
|
|
|
|
|
|
static int
|
|
EXT (INT opt, const CHAR *pattern, const CHAR *string, const CHAR *string_end,
|
|
bool no_leading_period, int flags, size_t alloca_used)
|
|
{
|
|
const CHAR *startp;
|
|
ptrdiff_t level;
|
|
struct patternlist
|
|
{
|
|
struct patternlist *next;
|
|
CHAR malloced;
|
|
CHAR str __flexarr;
|
|
} *list = NULL;
|
|
struct patternlist **lastp = &list;
|
|
size_t pattern_len = STRLEN (pattern);
|
|
bool any_malloced = false;
|
|
const CHAR *p;
|
|
const CHAR *rs;
|
|
int retval = 0;
|
|
|
|
/* Parse the pattern. Store the individual parts in the list. */
|
|
level = 0;
|
|
for (startp = p = pattern + 1; level >= 0; ++p)
|
|
if (*p == L_('\0'))
|
|
{
|
|
/* This is an invalid pattern. */
|
|
retval = -1;
|
|
goto out;
|
|
}
|
|
else if (*p == L_('['))
|
|
{
|
|
/* Handle brackets special. */
|
|
if (posixly_correct == 0)
|
|
posixly_correct = getenv ("POSIXLY_CORRECT") != NULL ? 1 : -1;
|
|
|
|
/* Skip the not sign. We have to recognize it because of a possibly
|
|
following ']'. */
|
|
if (*++p == L_('!') || (posixly_correct < 0 && *p == L_('^')))
|
|
++p;
|
|
/* A leading ']' is recognized as such. */
|
|
if (*p == L_(']'))
|
|
++p;
|
|
/* Skip over all characters of the list. */
|
|
while (*p != L_(']'))
|
|
if (*p++ == L_('\0'))
|
|
{
|
|
/* This is no valid pattern. */
|
|
retval = -1;
|
|
goto out;
|
|
}
|
|
}
|
|
else if ((*p == L_('?') || *p == L_('*') || *p == L_('+') || *p == L_('@')
|
|
|| *p == L_('!')) && p[1] == L_('('))
|
|
/* Remember the nesting level. */
|
|
++level;
|
|
else if (*p == L_(')'))
|
|
{
|
|
if (level-- == 0)
|
|
{
|
|
/* This means we found the end of the pattern. */
|
|
#define NEW_PATTERN \
|
|
struct patternlist *newp; \
|
|
size_t plen = (opt == L_('?') || opt == L_('@') \
|
|
? pattern_len : (p - startp + 1UL)); \
|
|
idx_t slen = FLEXSIZEOF (struct patternlist, str, 0); \
|
|
idx_t new_used = alloca_used + slen; \
|
|
idx_t plensize; \
|
|
if (INT_MULTIPLY_WRAPV (plen, sizeof (CHAR), &plensize) \
|
|
|| INT_ADD_WRAPV (new_used, plensize, &new_used)) \
|
|
{ \
|
|
retval = -2; \
|
|
goto out; \
|
|
} \
|
|
slen += plensize; \
|
|
bool malloced = ! __libc_use_alloca (new_used); \
|
|
if (__glibc_unlikely (malloced)) \
|
|
{ \
|
|
newp = malloc (slen); \
|
|
if (newp == NULL) \
|
|
{ \
|
|
retval = -2; \
|
|
goto out; \
|
|
} \
|
|
any_malloced = true; \
|
|
} \
|
|
else \
|
|
newp = alloca_account (slen, alloca_used); \
|
|
newp->next = NULL; \
|
|
newp->malloced = malloced; \
|
|
*((CHAR *) MEMPCPY (newp->str, startp, p - startp)) = L_('\0'); \
|
|
*lastp = newp; \
|
|
lastp = &newp->next
|
|
NEW_PATTERN;
|
|
}
|
|
}
|
|
else if (*p == L_('|'))
|
|
{
|
|
if (level == 0)
|
|
{
|
|
NEW_PATTERN;
|
|
startp = p + 1;
|
|
}
|
|
}
|
|
assert (list != NULL);
|
|
assert (p[-1] == L_(')'));
|
|
#undef NEW_PATTERN
|
|
|
|
switch (opt)
|
|
{
|
|
case L_('*'):
|
|
if (FCT (p, string, string_end, no_leading_period, flags, NULL,
|
|
alloca_used) == 0)
|
|
goto success;
|
|
FALLTHROUGH;
|
|
case L_('+'):
|
|
do
|
|
{
|
|
for (rs = string; rs <= string_end; ++rs)
|
|
/* First match the prefix with the current pattern with the
|
|
current pattern. */
|
|
if (FCT (list->str, string, rs, no_leading_period,
|
|
flags & FNM_FILE_NAME ? flags : flags & ~FNM_PERIOD,
|
|
NULL, alloca_used) == 0
|
|
/* This was successful. Now match the rest with the rest
|
|
of the pattern. */
|
|
&& (FCT (p, rs, string_end,
|
|
rs == string
|
|
? no_leading_period
|
|
: rs[-1] == '/' && NO_LEADING_PERIOD (flags),
|
|
flags & FNM_FILE_NAME
|
|
? flags : flags & ~FNM_PERIOD, NULL, alloca_used) == 0
|
|
/* This didn't work. Try the whole pattern. */
|
|
|| (rs != string
|
|
&& FCT (pattern - 1, rs, string_end,
|
|
rs == string
|
|
? no_leading_period
|
|
: rs[-1] == '/' && NO_LEADING_PERIOD (flags),
|
|
flags & FNM_FILE_NAME
|
|
? flags : flags & ~FNM_PERIOD, NULL,
|
|
alloca_used) == 0)))
|
|
/* It worked. Signal success. */
|
|
goto success;
|
|
}
|
|
while ((list = list->next) != NULL);
|
|
|
|
/* None of the patterns lead to a match. */
|
|
retval = FNM_NOMATCH;
|
|
break;
|
|
|
|
case L_('?'):
|
|
if (FCT (p, string, string_end, no_leading_period, flags, NULL,
|
|
alloca_used) == 0)
|
|
goto success;
|
|
FALLTHROUGH;
|
|
case L_('@'):
|
|
do
|
|
/* I cannot believe it but 'strcat' is actually acceptable
|
|
here. Match the entire string with the prefix from the
|
|
pattern list and the rest of the pattern following the
|
|
pattern list. */
|
|
if (FCT (STRCAT (list->str, p), string, string_end,
|
|
no_leading_period,
|
|
flags & FNM_FILE_NAME ? flags : flags & ~FNM_PERIOD,
|
|
NULL, alloca_used) == 0)
|
|
/* It worked. Signal success. */
|
|
goto success;
|
|
while ((list = list->next) != NULL);
|
|
|
|
/* None of the patterns lead to a match. */
|
|
retval = FNM_NOMATCH;
|
|
break;
|
|
|
|
case L_('!'):
|
|
for (rs = string; rs <= string_end; ++rs)
|
|
{
|
|
struct patternlist *runp;
|
|
|
|
for (runp = list; runp != NULL; runp = runp->next)
|
|
if (FCT (runp->str, string, rs, no_leading_period,
|
|
flags & FNM_FILE_NAME ? flags : flags & ~FNM_PERIOD,
|
|
NULL, alloca_used) == 0)
|
|
break;
|
|
|
|
/* If none of the patterns matched see whether the rest does. */
|
|
if (runp == NULL
|
|
&& (FCT (p, rs, string_end,
|
|
rs == string
|
|
? no_leading_period
|
|
: rs[-1] == '/' && NO_LEADING_PERIOD (flags),
|
|
flags & FNM_FILE_NAME ? flags : flags & ~FNM_PERIOD,
|
|
NULL, alloca_used) == 0))
|
|
/* This is successful. */
|
|
goto success;
|
|
}
|
|
|
|
/* None of the patterns together with the rest of the pattern
|
|
lead to a match. */
|
|
retval = FNM_NOMATCH;
|
|
break;
|
|
|
|
default:
|
|
assert (! "Invalid extended matching operator");
|
|
retval = -1;
|
|
break;
|
|
}
|
|
|
|
success:
|
|
out:
|
|
if (any_malloced)
|
|
while (list != NULL)
|
|
{
|
|
struct patternlist *old = list;
|
|
list = list->next;
|
|
if (old->malloced)
|
|
free (old);
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
|
|
#undef FOLD
|
|
#undef CHAR
|
|
#undef UCHAR
|
|
#undef INT
|
|
#undef FCT
|
|
#undef EXT
|
|
#undef END
|
|
#undef STRUCT
|
|
#undef MEMPCPY
|
|
#undef MEMCHR
|
|
#undef STRLEN
|
|
#undef STRCAT
|
|
#undef L_
|
|
#undef BTOWC
|
|
#undef WIDE_CHAR_VERSION
|
|
#undef FINDIDX
|