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fnmatch.c: Update to version in OpenBSD HEAD

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Upgrade fnmatch.c from OpenBSD version 1.13 to 1.16.
This is needed primarily to address CVE-2011-0419.

This is a straight copy from upstream's version at
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gen/fnmatch.c and
incorporates the following changes:

Revision 1.16:
New fnmatch(3) implementation which is not recursive.
Written and provided under BSD licence by William A. Rowe Jr.
Originally released in Apache APR-1.4.5.
Merged class matching code from r1.14 and PATH_MAX check from r1.15.
ok miod millert

Revision 1.15:
Put a limit on recursion during matching, and reject input of size greater
or equal PATH_MAX. Based on similar fix made in NetBSD.
ok miod@ millert@

Revision 1.14:
POSIX character class support for fnmatch(3) and glob(3).  OK deraadt@

Version 1.14 introduced charclasses.h, which we copy unmodified
from upstream version 1.1.
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gen/charclass.h

Bug: 3435120
Change-Id: I45133468f0c3d439fd10eb087a1c647799f9d25b
This commit is contained in:
Nick Kralevich 2012-03-21 09:46:46 -07:00
parent aac0dc97a9
commit d1860ad8dd
2 changed files with 490 additions and 186 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

29
libc/unistd/charclass.h Normal file
View file

@ -0,0 +1,29 @@
/*
* Public domain, 2008, Todd C. Miller <Todd.Miller@courtesan.com>
*
* $OpenBSD: charclass.h,v 1.1 2008/10/01 23:04:13 millert Exp $
*/
/*
* POSIX character class support for fnmatch() and glob().
*/
static struct cclass {
const char *name;
int (*isctype)(int);
} cclasses[] = {
{ "alnum", isalnum },
{ "alpha", isalpha },
{ "blank", isblank },
{ "cntrl", iscntrl },
{ "digit", isdigit },
{ "graph", isgraph },
{ "lower", islower },
{ "print", isprint },
{ "punct", ispunct },
{ "space", isspace },
{ "upper", isupper },
{ "xdigit", isxdigit },
{ NULL, NULL }
};
#define NCCLASSES (sizeof(cclasses) / sizeof(cclasses[0]) - 1)

647
libc/unistd/fnmatch.c
View file

@ -1,205 +1,480 @@
/* $OpenBSD: fnmatch.c,v 1.13 2006/03/31 05:34:14 deraadt Exp $ */ /* $OpenBSD: fnmatch.c,v 1.16 2011/12/06 11:47:46 stsp Exp $ */
/* /* Copyright (c) 2011, VMware, Inc.
* Copyright (c) 1989, 1993, 1994 * All rights reserved.
* The Regents of the University of California. All rights reserved. *
*
* This code is derived from software contributed to Berkeley by
* Guido van Rossum.
*
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions * modification, are permitted provided that the following conditions are met:
* are met: * * Redistributions of source code must retain the above copyright
* 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer.
* notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright
* 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the
* notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution.
* documentation and/or other materials provided with the distribution. * * Neither the name of the VMware, Inc. nor the names of its contributors
* 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software
* may be used to endorse or promote products derived from this software * without specific prior written permission.
* without specific prior written permission. *
* * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * ARE DISCLAIMED. IN NO EVENT SHALL VMWARE, INC. OR CONTRIBUTORS BE LIABLE FOR
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* SUCH DAMAGE.
*/ */
/* /*
* Function fnmatch() as specified in POSIX 1003.2-1992, section B.6. * Copyright (c) 2008 Todd C. Miller <millert@openbsd.org>
* Compares a filename or pathname to a pattern. *
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* Authored by William A. Rowe Jr. <wrowe; apache.org, vmware.com>, April 2011
*
* Derived from The Open Group Base Specifications Issue 7, IEEE Std 1003.1-2008
* as described in;
* http://pubs.opengroup.org/onlinepubs/9699919799/functions/fnmatch.html
*
* Filename pattern matches defined in section 2.13, "Pattern Matching Notation"
* from chapter 2. "Shell Command Language"
* http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_13
* where; 1. A bracket expression starting with an unquoted <circumflex> '^'
* character CONTINUES to specify a non-matching list; 2. an explicit <period> '.'
* in a bracket expression matching list, e.g. "[.abc]" does NOT match a leading
* <period> in a filename; 3. a <left-square-bracket> '[' which does not introduce
* a valid bracket expression is treated as an ordinary character; 4. a differing
* number of consecutive slashes within pattern and string will NOT match;
* 5. a trailing '\' in FNM_ESCAPE mode is treated as an ordinary '\' character.
*
* Bracket expansion defined in section 9.3.5, "RE Bracket Expression",
* from chapter 9, "Regular Expressions"
* http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_03_05
* with no support for collating symbols, equivalence class expressions or
* character class expressions. A partial range expression with a leading
* hyphen following a valid range expression will match only the ordinary
* <hyphen> and the ending character (e.g. "[a-m-z]" will match characters
* 'a' through 'm', a <hyphen> '-', or a 'z').
*
* Supports BSD extensions FNM_LEADING_DIR to match pattern to the end of one
* path segment of string, and FNM_CASEFOLD to ignore alpha case.
*
* NOTE: Only POSIX/C single byte locales are correctly supported at this time.
* Notably, non-POSIX locales with FNM_CASEFOLD produce undefined results,
* particularly in ranges of mixed case (e.g. "[A-z]") or spanning alpha and
* nonalpha characters within a range.
*
* XXX comments below indicate porting required for multi-byte character sets
* and non-POSIX locale collation orders; requires mbr* APIs to track shift
* state of pattern and string (rewinding pattern and string repeatedly).
*
* Certain parts of the code assume 0x00-0x3F are unique with any MBCS (e.g.
* UTF-8, SHIFT-JIS, etc). Any implementation allowing '\' as an alternate
* path delimiter must be aware that 0x5C is NOT unique within SHIFT-JIS.
*/ */
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <fnmatch.h> #include <fnmatch.h>
#include <string.h>
#include <ctype.h>
#include <limits.h>
#define EOS '\0' #include "charclass.h"
#define RANGE_MATCH 1 #define RANGE_MATCH 1
#define RANGE_NOMATCH 0 #define RANGE_NOMATCH 0
#define RANGE_ERROR (-1) #define RANGE_ERROR (-1)
static int rangematch(const char *, char, int, char **);
int
fnmatch(const char *pattern, const char *string, int flags)
{
const char *stringstart;
char *newp;
char c, test;
for (stringstart = string;;)
switch (c = *pattern++) {
case EOS:
if ((flags & FNM_LEADING_DIR) && *string == '/')
return (0);
return (*string == EOS ? 0 : FNM_NOMATCH);
case '?':
if (*string == EOS)
return (FNM_NOMATCH);
if (*string == '/' && (flags & FNM_PATHNAME))
return (FNM_NOMATCH);
if (*string == '.' && (flags & FNM_PERIOD) &&
(string == stringstart ||
((flags & FNM_PATHNAME) && *(string - 1) == '/')))
return (FNM_NOMATCH);
++string;
break;
case '*':
c = *pattern;
/* Collapse multiple stars. */
while (c == '*')
c = *++pattern;
if (*string == '.' && (flags & FNM_PERIOD) &&
(string == stringstart ||
((flags & FNM_PATHNAME) && *(string - 1) == '/')))
return (FNM_NOMATCH);
/* Optimize for pattern with * at end or before /. */
if (c == EOS) {
if (flags & FNM_PATHNAME)
return ((flags & FNM_LEADING_DIR) ||
strchr(string, '/') == NULL ?
0 : FNM_NOMATCH);
else
return (0);
} else if (c == '/' && (flags & FNM_PATHNAME)) {
if ((string = strchr(string, '/')) == NULL)
return (FNM_NOMATCH);
break;
}
/* General case, use recursion. */
while ((test = *string) != EOS) {
if (!fnmatch(pattern, string, flags & ~FNM_PERIOD))
return (0);
if (test == '/' && (flags & FNM_PATHNAME))
break;
++string;
}
return (FNM_NOMATCH);
case '[':
if (*string == EOS)
return (FNM_NOMATCH);
if (*string == '/' && (flags & FNM_PATHNAME))
return (FNM_NOMATCH);
if (*string == '.' && (flags & FNM_PERIOD) &&
(string == stringstart ||
((flags & FNM_PATHNAME) && *(string - 1) == '/')))
return (FNM_NOMATCH);
switch (rangematch(pattern, *string, flags, &newp)) {
case RANGE_ERROR:
/* not a good range, treat as normal text */
goto normal;
case RANGE_MATCH:
pattern = newp;
break;
case RANGE_NOMATCH:
return (FNM_NOMATCH);
}
++string;
break;
case '\\':
if (!(flags & FNM_NOESCAPE)) {
if ((c = *pattern++) == EOS) {
c = '\\';
--pattern;
}
}
/* FALLTHROUGH */
default:
normal:
if (c != *string && !((flags & FNM_CASEFOLD) &&
(tolower((unsigned char)c) ==
tolower((unsigned char)*string))))
return (FNM_NOMATCH);
++string;
break;
}
/* NOTREACHED */
}
static int static int
rangematch(const char *pattern, char test, int flags, char **newp) classmatch(const char *pattern, char test, int foldcase, const char **ep)
{ {
int negate, ok; struct cclass *cc;
char c, c2; const char *colon;
size_t len;
int rval = RANGE_NOMATCH;
const char * const mismatch = pattern;
/* if (*pattern != '[' || pattern[1] != ':') {
* A bracket expression starting with an unquoted circumflex *ep = mismatch;
* character produces unspecified results (IEEE 1003.2-1992, return(RANGE_ERROR);
* 3.13.2). This implementation treats it like '!', for }
* consistency with the regular expression syntax.
* J.T. Conklin (conklin@ngai.kaleida.com)
*/
if ((negate = (*pattern == '!' || *pattern == '^')))
++pattern;
if (flags & FNM_CASEFOLD) pattern += 2;
test = (char)tolower((unsigned char)test);
/* if ((colon = strchr(pattern, ':')) == NULL || colon[1] != ']') {
* A right bracket shall lose its special meaning and represent *ep = mismatch;
* itself in a bracket expression if it occurs first in the list. return(RANGE_ERROR);
* -- POSIX.2 2.8.3.2 }
*/ *ep = colon + 2;
ok = 0; len = (size_t)(colon - pattern);
c = *pattern++;
do {
if (c == '\\' && !(flags & FNM_NOESCAPE))
c = *pattern++;
if (c == EOS)
return (RANGE_ERROR);
if (c == '/' && (flags & FNM_PATHNAME))
return (RANGE_NOMATCH);
if ((flags & FNM_CASEFOLD))
c = (char)tolower((unsigned char)c);
if (*pattern == '-'
&& (c2 = *(pattern+1)) != EOS && c2 != ']') {
pattern += 2;
if (c2 == '\\' && !(flags & FNM_NOESCAPE))
c2 = *pattern++;
if (c2 == EOS)
return (RANGE_ERROR);
if (flags & FNM_CASEFOLD)
c2 = (char)tolower((unsigned char)c2);
if (c <= test && test <= c2)
ok = 1;
} else if (c == test)
ok = 1;
} while ((c = *pattern++) != ']');
*newp = (char *)pattern; if (foldcase && strncmp(pattern, "upper:]", 7) == 0)
return (ok == negate ? RANGE_NOMATCH : RANGE_MATCH); pattern = "lower:]";
for (cc = cclasses; cc->name != NULL; cc++) {
if (!strncmp(pattern, cc->name, len) && cc->name[len] == '\0') {
if (cc->isctype((unsigned char)test))
rval = RANGE_MATCH;
break;
}
}
if (cc->name == NULL) {
/* invalid character class, treat as normal text */
*ep = mismatch;
rval = RANGE_ERROR;
}
return(rval);
}
/* Most MBCS/collation/case issues handled here. Wildcard '*' is not handled.
* EOS '\0' and the FNM_PATHNAME '/' delimiters are not advanced over,
* however the "\/" sequence is advanced to '/'.
*
* Both pattern and string are **char to support pointer increment of arbitrary
* multibyte characters for the given locale, in a later iteration of this code
*/
static int fnmatch_ch(const char **pattern, const char **string, int flags)
{
const char * const mismatch = *pattern;
const int nocase = !!(flags & FNM_CASEFOLD);
const int escape = !(flags & FNM_NOESCAPE);
const int slash = !!(flags & FNM_PATHNAME);
int result = FNM_NOMATCH;
const char *startch;
int negate;
if (**pattern == '[')
{
++*pattern;
/* Handle negation, either leading ! or ^ operators (never both) */
negate = ((**pattern == '!') || (**pattern == '^'));
if (negate)
++*pattern;
/* ']' is an ordinary character at the start of the range pattern */
if (**pattern == ']')
goto leadingclosebrace;
while (**pattern)
{
if (**pattern == ']') {
++*pattern;
/* XXX: Fix for MBCS character width */
++*string;
return (result ^ negate);
}
if (escape && (**pattern == '\\')) {
++*pattern;
/* Patterns must be terminated with ']', not EOS */
if (!**pattern)
break;
}
/* Patterns must be terminated with ']' not '/' */
if (slash && (**pattern == '/'))
break;
/* Match character classes. */
if (classmatch(*pattern, **string, nocase, pattern)
== RANGE_MATCH) {
result = 0;
continue;
}
leadingclosebrace:
/* Look at only well-formed range patterns;
* "x-]" is not allowed unless escaped ("x-\]")
* XXX: Fix for locale/MBCS character width
*/
if (((*pattern)[1] == '-') && ((*pattern)[2] != ']'))
{
startch = *pattern;
*pattern += (escape && ((*pattern)[2] == '\\')) ? 3 : 2;
/* NOT a properly balanced [expr] pattern, EOS terminated
* or ranges containing a slash in FNM_PATHNAME mode pattern
* fall out to to the rewind and test '[' literal code path
*/
if (!**pattern || (slash && (**pattern == '/')))
break;
/* XXX: handle locale/MBCS comparison, advance by MBCS char width */
if ((**string >= *startch) && (**string <= **pattern))
result = 0;
else if (nocase && (isupper(**string) || isupper(*startch)
|| isupper(**pattern))
&& (tolower(**string) >= tolower(*startch))
&& (tolower(**string) <= tolower(**pattern)))
result = 0;
++*pattern;
continue;
}
/* XXX: handle locale/MBCS comparison, advance by MBCS char width */
if ((**string == **pattern))
result = 0;
else if (nocase && (isupper(**string) || isupper(**pattern))
&& (tolower(**string) == tolower(**pattern)))
result = 0;
++*pattern;
}
/* NOT a properly balanced [expr] pattern; Rewind
* and reset result to test '[' literal
*/
*pattern = mismatch;
result = FNM_NOMATCH;
}
else if (**pattern == '?') {
/* Optimize '?' match before unescaping **pattern */
if (!**string || (slash && (**string == '/')))
return FNM_NOMATCH;
result = 0;
goto fnmatch_ch_success;
}
else if (escape && (**pattern == '\\') && (*pattern)[1]) {
++*pattern;
}
/* XXX: handle locale/MBCS comparison, advance by the MBCS char width */
if (**string == **pattern)
result = 0;
else if (nocase && (isupper(**string) || isupper(**pattern))
&& (tolower(**string) == tolower(**pattern)))
result = 0;
/* Refuse to advance over trailing slash or nulls
*/
if (!**string || !**pattern || (slash && ((**string == '/') || (**pattern == '/'))))
return result;
fnmatch_ch_success:
++*pattern;
++*string;
return result;
}
int fnmatch(const char *pattern, const char *string, int flags)
{
static const char dummystring[2] = {' ', 0};
const int escape = !(flags & FNM_NOESCAPE);
const int slash = !!(flags & FNM_PATHNAME);
const int leading_dir = !!(flags & FNM_LEADING_DIR);
const char *strendseg;
const char *dummyptr;
const char *matchptr;
int wild;
/* For '*' wild processing only; surpress 'used before initialization'
* warnings with dummy initialization values;
*/
const char *strstartseg = NULL;
const char *mismatch = NULL;
int matchlen = 0;
if (strnlen(pattern, PATH_MAX) == PATH_MAX ||
strnlen(string, PATH_MAX) == PATH_MAX)
return (FNM_NOMATCH);
if (*pattern == '*')
goto firstsegment;
while (*pattern && *string)
{
/* Pre-decode "\/" which has no special significance, and
* match balanced slashes, starting a new segment pattern
*/
if (slash && escape && (*pattern == '\\') && (pattern[1] == '/'))
++pattern;
if (slash && (*pattern == '/') && (*string == '/')) {
++pattern;
++string;
}
firstsegment:
/* At the beginning of each segment, validate leading period behavior.
*/
if ((flags & FNM_PERIOD) && (*string == '.'))
{
if (*pattern == '.')
++pattern;
else if (escape && (*pattern == '\\') && (pattern[1] == '.'))
pattern += 2;
else
return FNM_NOMATCH;
++string;
}
/* Determine the end of string segment
*
* Presumes '/' character is unique, not composite in any MBCS encoding
*/
if (slash) {
strendseg = strchr(string, '/');
if (!strendseg)
strendseg = strchr(string, '\0');
}
else {
strendseg = strchr(string, '\0');
}
/* Allow pattern '*' to be consumed even with no remaining string to match
*/
while (*pattern)
{
if ((string > strendseg)
|| ((string == strendseg) && (*pattern != '*')))
break;
if (slash && ((*pattern == '/')
|| (escape && (*pattern == '\\')
&& (pattern[1] == '/'))))
break;
/* Reduce groups of '*' and '?' to n '?' matches
* followed by one '*' test for simplicity
*/
for (wild = 0; ((*pattern == '*') || (*pattern == '?')); ++pattern)
{
if (*pattern == '*') {
wild = 1;
}
else if (string < strendseg) { /* && (*pattern == '?') */
/* XXX: Advance 1 char for MBCS locale */
++string;
}
else { /* (string >= strendseg) && (*pattern == '?') */
return FNM_NOMATCH;
}
}
if (wild)
{
strstartseg = string;
mismatch = pattern;
/* Count fixed (non '*') char matches remaining in pattern
* excluding '/' (or "\/") and '*'
*/
for (matchptr = pattern, matchlen = 0; 1; ++matchlen)
{
if ((*matchptr == '\0')
|| (slash && ((*matchptr == '/')
|| (escape && (*matchptr == '\\')
&& (matchptr[1] == '/')))))
{
/* Compare precisely this many trailing string chars,
* the resulting match needs no wildcard loop
*/
/* XXX: Adjust for MBCS */
if (string + matchlen > strendseg)
return FNM_NOMATCH;
string = strendseg - matchlen;
wild = 0;
break;
}
if (*matchptr == '*')
{
/* Ensure at least this many trailing string chars remain
* for the first comparison
*/
/* XXX: Adjust for MBCS */
if (string + matchlen > strendseg)
return FNM_NOMATCH;
/* Begin first wild comparison at the current position */
break;
}
/* Skip forward in pattern by a single character match
* Use a dummy fnmatch_ch() test to count one "[range]" escape
*/
/* XXX: Adjust for MBCS */
if (escape && (*matchptr == '\\') && matchptr[1]) {
matchptr += 2;
}
else if (*matchptr == '[') {
dummyptr = dummystring;
fnmatch_ch(&matchptr, &dummyptr, flags);
}
else {
++matchptr;
}
}
}
/* Incrementally match string against the pattern
*/
while (*pattern && (string < strendseg))
{
/* Success; begin a new wild pattern search
*/
if (*pattern == '*')
break;
if (slash && ((*string == '/')
|| (*pattern == '/')
|| (escape && (*pattern == '\\')
&& (pattern[1] == '/'))))
break;
/* Compare ch's (the pattern is advanced over "\/" to the '/',
* but slashes will mismatch, and are not consumed)
*/
if (!fnmatch_ch(&pattern, &string, flags))
continue;
/* Failed to match, loop against next char offset of string segment
* until not enough string chars remain to match the fixed pattern
*/
if (wild) {
/* XXX: Advance 1 char for MBCS locale */
string = ++strstartseg;
if (string + matchlen > strendseg)
return FNM_NOMATCH;
pattern = mismatch;
continue;
}
else
return FNM_NOMATCH;
}
}
if (*string && !((slash || leading_dir) && (*string == '/')))
return FNM_NOMATCH;
if (*pattern && !(slash && ((*pattern == '/')
|| (escape && (*pattern == '\\')
&& (pattern[1] == '/')))))
return FNM_NOMATCH;
if (leading_dir && !*pattern && *string == '/')
return 0;
}
/* Where both pattern and string are at EOS, declare success
*/
if (!*string && !*pattern)
return 0;
/* pattern didn't match to the end of string */
return FNM_NOMATCH;
} }