* This code is derived from software contributed to Berkeley by
* Guido van Rossum.
*
+ * Copyright (c) 2011 The FreeBSD Foundation
+ * All rights reserved.
+ * Portions of this software were developed by David Chisnall
+ * under sponsorship from the FreeBSD Foundation.
+ *
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 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
* without specific prior written permission.
*
static char sccsid[] = "@(#)glob.c 8.3 (Berkeley) 10/13/93";
#endif /* LIBC_SCCS and not lint */
#include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/gen/glob.c,v 1.22 2004/07/29 03:48:52 tjr Exp $");
+__FBSDID("$FreeBSD$");
+
+#include "xlocale_private.h"
/*
* glob(3) -- a superset of the one defined in POSIX 1003.2.
* 1. Patterns with illegal byte sequences match nothing - even if
* GLOB_NOCHECK is specified.
* 2. Illegal byte sequences in filenames are handled by treating them as
- * single-byte characters with a value of the first byte of the sequence
+ * single-byte characters with a values of such bytes of the sequence
* cast to wchar_t.
* 3. State-dependent encodings are not currently supported.
*/
#include <string.h>
#include <unistd.h>
#include <wchar.h>
+#include <malloc_private.h>
#include "collate.h"
-#define DOLLAR '$'
-#define DOT '.'
-#define EOS '\0'
-#define LBRACKET '['
-#define NOT '!'
-#define QUESTION '?'
-#define QUOTE '\\'
-#define RANGE '-'
-#define RBRACKET ']'
-#define SEP '/'
-#define STAR '*'
-#define TILDE '~'
-#define UNDERSCORE '_'
-#define LBRACE '{'
-#define RBRACE '}'
-#define SLASH '/'
-#define COMMA ','
-
-#ifndef DEBUG
+/*
+ * glob(3) expansion limits. Stop the expansion if any of these limits
+ * is reached. This caps the runtime in the face of DoS attacks. See
+ * also CVE-2010-2632
+ */
+#define GLOB_LIMIT_BRACE 128 /* number of brace calls */
+#define GLOB_LIMIT_PATH 1024 /* number of path elements */
+#define GLOB_LIMIT_READDIR 16384 /* number of readdirs */
+#define GLOB_LIMIT_STAT 128 /* number of stat system calls */
+#define GLOB_LIMIT_STRING 65536 /* maximum total size for paths */
+
+struct glob_limit {
+ size_t l_brace_cnt;
+ size_t l_path_lim;
+ size_t l_readdir_cnt;
+ size_t l_stat_cnt;
+ size_t l_string_cnt;
+};
+
+#define DOT L'.'
+#define EOS L'\0'
+#define LBRACKET L'['
+#define NOT L'!'
+#define QUESTION L'?'
+#define QUOTE L'\\'
+#define RANGE L'-'
+#define RBRACKET L']'
+#define SEP L'/'
+#define STAR L'*'
+#define TILDE L'~'
+#define LBRACE L'{'
+#define RBRACE L'}'
+#define COMMA L','
#define M_QUOTE 0x8000000000ULL
#define M_PROTECT 0x4000000000ULL
typedef uint_fast64_t Char;
-#else
-
-#define M_QUOTE 0x80
-#define M_PROTECT 0x40
-#define M_MASK 0xff
-#define M_CHAR 0x7f
-
-typedef char Char;
-
-#endif
-
-
#define CHAR(c) ((Char)((c)&M_CHAR))
#define META(c) ((Char)((c)|M_QUOTE))
-#define M_ALL META('*')
-#define M_END META(']')
-#define M_NOT META('!')
-#define M_ONE META('?')
-#define M_RNG META('-')
-#define M_SET META('[')
+#define UNPROT(c) ((c) & ~M_PROTECT)
+#define M_ALL META(L'*')
+#define M_END META(L']')
+#define M_NOT META(L'!')
+#define M_ONE META(L'?')
+#define M_RNG META(L'-')
+#define M_SET META(L'[')
#define ismeta(c) (((c)&M_QUOTE) != 0)
+#ifdef DEBUG
+#define isprot(c) (((c)&M_PROTECT) != 0)
+#endif
+
+#define compare __gl_compare
+#define g_Ctoc __gl_g_Ctoc
+#define g_strchr __gl_g_strchr
+#define globextend __gl_globextend
+#define globtilde __gl_globtilde
+#define match __gl_match
-static int compare(const void *, const void *);
-static int g_Ctoc(const Char *, char *, u_int);
-static int g_lstat(Char *, struct stat *, glob_t *);
-static DIR *g_opendir(Char *, glob_t *);
-static Char *g_strchr(Char *, wchar_t);
+__private_extern__ int compare(const void *, const void *);
+__private_extern__ int g_Ctoc(const Char *, char *, size_t, locale_t);
+static int g_lstat(Char *, struct stat *, glob_t *, locale_t);
+static DIR *g_opendir(Char *, glob_t *, locale_t);
+__private_extern__ const Char *g_strchr(const Char *, wchar_t);
#ifdef notdef
static Char *g_strcat(Char *, const Char *);
#endif
-static int g_stat(Char *, struct stat *, glob_t *);
-static int glob0(const Char *, glob_t *, int *);
-static int glob1(Char *, glob_t *, int *);
-static int glob2(Char *, Char *, Char *, Char *, glob_t *, int *);
-static int glob3(Char *, Char *, Char *, Char *, Char *, glob_t *, int *);
-static int globextend(const Char *, glob_t *, int *);
-static const Char *
- globtilde(const Char *, Char *, size_t, glob_t *);
-static int globexp1(const Char *, glob_t *, int *);
-static int globexp2(const Char *, const Char *, glob_t *, int *, int *);
-static int match(Char *, Char *, Char *);
+static int g_stat(Char *, struct stat *, glob_t *, locale_t);
+static int glob0(const Char *, glob_t *, struct glob_limit *,
+ const char *,locale_t);
+static int glob1(Char *, glob_t *, struct glob_limit *, locale_t);
+static int glob2(Char *, Char *, Char *, Char *, glob_t *,
+ struct glob_limit *, locale_t);
+static int glob3(Char *, Char *, Char *, Char *, Char *, glob_t *,
+ struct glob_limit *, locale_t);
+__private_extern__ int globextend(const Char *, glob_t *, struct glob_limit *,
+ const char *, locale_t);
+__private_extern__ const Char * globtilde(const Char *, Char *, size_t, glob_t *,
+ locale_t);
+static int globexp0(const Char *, glob_t *, struct glob_limit *,
+ const char *, locale_t);
+static int globexp1(const Char *, glob_t *, struct glob_limit *, locale_t);
+static int globexp2(const Char *, const Char *, glob_t *,
+ struct glob_limit *, locale_t);
+static int globfinal(glob_t *, struct glob_limit *, size_t,
+ const char *, locale_t);
+__private_extern__ int match(Char *, Char *, Char *, locale_t);
+static int err_nomatch(glob_t *, struct glob_limit *, const char *, locale_t loc);
+static int err_aborted(glob_t *, int, char *);
#ifdef DEBUG
static void qprintf(const char *, Char *);
#endif
-int
-glob(pattern, flags, errfunc, pglob)
- const char *pattern;
- int flags, (*errfunc)(const char *, int);
- glob_t *pglob;
+static int
+__glob(const char *pattern, glob_t *pglob)
{
- const u_char *patnext;
- int limit;
+ struct glob_limit limit = { 0, 0, 0, 0, 0 };
+ const char *patnext;
Char *bufnext, *bufend, patbuf[MAXPATHLEN], prot;
mbstate_t mbs;
wchar_t wc;
size_t clen;
+ int too_long;
+ locale_t loc = __current_locale();
+ int mb_cur_max = MB_CUR_MAX_L(loc);
- patnext = (u_char *) pattern;
- if (!(flags & GLOB_APPEND)) {
+ patnext = pattern;
+ if (!(pglob->gl_flags & GLOB_APPEND)) {
pglob->gl_pathc = 0;
pglob->gl_pathv = NULL;
- if (!(flags & GLOB_DOOFFS))
+ if (!(pglob->gl_flags & GLOB_DOOFFS))
pglob->gl_offs = 0;
}
- if (flags & GLOB_LIMIT) {
- limit = pglob->gl_matchc;
- if (limit == 0)
- limit = ARG_MAX;
- } else
- limit = 0;
- pglob->gl_flags = flags & ~GLOB_MAGCHAR;
- pglob->gl_errfunc = errfunc;
+ if (pglob->gl_flags & GLOB_LIMIT) {
+ limit.l_path_lim = pglob->gl_matchc;
+ if (limit.l_path_lim == 0)
+ limit.l_path_lim = GLOB_LIMIT_PATH;
+ }
pglob->gl_matchc = 0;
bufnext = patbuf;
bufend = bufnext + MAXPATHLEN - 1;
- if (flags & GLOB_NOESCAPE) {
+ too_long = 1;
+ if (pglob->gl_flags & GLOB_NOESCAPE) {
memset(&mbs, 0, sizeof(mbs));
- while (bufend - bufnext >= MB_CUR_MAX) {
- clen = mbrtowc(&wc, patnext, MB_LEN_MAX, &mbs);
+ while (bufend - bufnext >= mb_cur_max) {
+ clen = mbrtowc_l(&wc, patnext, MB_LEN_MAX, &mbs, loc);
if (clen == (size_t)-1 || clen == (size_t)-2)
- return (GLOB_NOMATCH);
- else if (clen == 0)
+ return (err_nomatch(pglob, &limit, pattern, loc));
+ else if (clen == 0) {
+ too_long = 0;
break;
+ }
*bufnext++ = wc;
patnext += clen;
}
} else {
/* Protect the quoted characters. */
memset(&mbs, 0, sizeof(mbs));
- while (bufend - bufnext >= MB_CUR_MAX) {
- if (*patnext == QUOTE) {
- if (*++patnext == EOS) {
- *bufnext++ = QUOTE | M_PROTECT;
+ while (bufend - bufnext >= mb_cur_max) {
+ if (*patnext == '\\') {
+ if (*++patnext == '\0') {
+ *bufnext++ = QUOTE;
continue;
}
prot = M_PROTECT;
} else
prot = 0;
- clen = mbrtowc(&wc, patnext, MB_LEN_MAX, &mbs);
+ clen = mbrtowc_l(&wc, patnext, MB_LEN_MAX, &mbs, loc);
if (clen == (size_t)-1 || clen == (size_t)-2)
- return (GLOB_NOMATCH);
- else if (clen == 0)
+ return (err_nomatch(pglob, &limit, pattern, loc));
+ else if (clen == 0) {
+ too_long = 0;
break;
+ }
*bufnext++ = wc | prot;
patnext += clen;
}
}
+ if (too_long)
+ return (err_nomatch(pglob, &limit, pattern, loc));
*bufnext = EOS;
- if (flags & GLOB_BRACE)
- return globexp1(patbuf, pglob, &limit);
+ if (pglob->gl_flags & GLOB_BRACE)
+ return globexp0(patbuf, pglob, &limit, pattern, loc);
else
- return glob0(patbuf, pglob, &limit);
+ return glob0(patbuf, pglob, &limit, pattern, loc);
+}
+
+int
+glob(const char *pattern, int flags, int (*errfunc)(const char *, int), glob_t *pglob)
+{
+#ifdef __BLOCKS__
+ pglob->gl_flags = flags & ~(GLOB_MAGCHAR | _GLOB_ERR_BLOCK);
+#else /* !__BLOCKS__ */
+ pglob->gl_flags = flags & ~GLOB_MAGCHAR;
+#endif /* __BLOCKS__ */
+ pglob->gl_errfunc = errfunc;
+ return __glob(pattern, pglob);
+}
+
+#ifdef __BLOCKS__
+int
+glob_b(const char *pattern, int flags, int (^errblk)(const char *, int), glob_t *pglob)
+{
+ pglob->gl_flags = flags & ~GLOB_MAGCHAR;
+ pglob->gl_flags |= _GLOB_ERR_BLOCK;
+ pglob->gl_errblk = errblk;
+ return __glob(pattern, pglob);
+}
+#endif /* __BLOCKS__ */
+
+static int
+globexp0(const Char *pattern, glob_t *pglob, struct glob_limit *limit,
+ const char *origpat, locale_t loc) {
+ int rv;
+ size_t oldpathc;
+
+ /* Protect a single {}, for find(1), like csh */
+ if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS) {
+ if ((pglob->gl_flags & GLOB_LIMIT) &&
+ limit->l_brace_cnt++ >= GLOB_LIMIT_BRACE) {
+ errno = E2BIG;
+ return (GLOB_NOSPACE);
+ }
+ return (glob0(pattern, pglob, limit, origpat, loc));
+ }
+
+ oldpathc = pglob->gl_pathc;
+
+ if ((rv = globexp1(pattern, pglob, limit, loc)) != 0)
+ return rv;
+
+ return (globfinal(pglob, limit, oldpathc, origpat, loc));
}
/*
* characters
*/
static int
-globexp1(pattern, pglob, limit)
- const Char *pattern;
- glob_t *pglob;
- int *limit;
+globexp1(const Char *pattern, glob_t *pglob, struct glob_limit *limit, locale_t loc)
{
- const Char* ptr = pattern;
- int rv;
+ const Char* ptr;
- /* Protect a single {}, for find(1), like csh */
- if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS)
- return glob0(pattern, pglob, limit);
-
- while ((ptr = (const Char *) g_strchr((Char *) ptr, LBRACE)) != NULL)
- if (!globexp2(ptr, pattern, pglob, &rv, limit))
- return rv;
+ if ((ptr = g_strchr(pattern, LBRACE)) != NULL) {
+ if ((pglob->gl_flags & GLOB_LIMIT) &&
+ limit->l_brace_cnt++ >= GLOB_LIMIT_BRACE) {
+ errno = E2BIG;
+ return (GLOB_NOSPACE);
+ }
+ return (globexp2(ptr, pattern, pglob, limit, loc));
+ }
- return glob0(pattern, pglob, limit);
+ return (glob0(pattern, pglob, limit, NULL, loc));
}
* If it fails then it tries to glob the rest of the pattern and returns.
*/
static int
-globexp2(ptr, pattern, pglob, rv, limit)
- const Char *ptr, *pattern;
- glob_t *pglob;
- int *rv, *limit;
+globexp2(const Char *ptr, const Char *pattern, glob_t *pglob,
+ struct glob_limit *limit, locale_t loc)
{
- int i;
+ int i, rv;
Char *lm, *ls;
- const Char *pe, *pm, *pl;
+ const Char *pe, *pm, *pm1, *pl;
Char patbuf[MAXPATHLEN];
/* copy part up to the brace */
ls = lm;
/* Find the balanced brace */
- for (i = 0, pe = ++ptr; *pe; pe++)
+ for (i = 0, pe = ++ptr; *pe != EOS; pe++)
if (*pe == LBRACKET) {
/* Ignore everything between [] */
for (pm = pe++; *pe != RBRACKET && *pe != EOS; pe++)
}
/* Non matching braces; just glob the pattern */
- if (i != 0 || *pe == EOS) {
- *rv = glob0(patbuf, pglob, limit);
- return 0;
- }
+ if (i != 0 || *pe == EOS)
+ return (glob0(pattern, pglob, limit, NULL, loc));
for (i = 0, pl = pm = ptr; pm <= pe; pm++)
switch (*pm) {
case LBRACKET:
/* Ignore everything between [] */
- for (pl = pm++; *pm != RBRACKET && *pm != EOS; pm++)
+ for (pm1 = pm++; *pm != RBRACKET && *pm != EOS; pm++)
continue;
if (*pm == EOS) {
/*
* We could not find a matching RBRACKET.
* Ignore and just look for RBRACE
*/
- pm = pl;
+ pm = pm1;
}
break;
#ifdef DEBUG
qprintf("globexp2:", patbuf);
#endif
- *rv = globexp1(patbuf, pglob, limit);
+ rv = globexp1(patbuf, pglob, limit, loc);
+ if (rv)
+ return (rv);
/* move after the comma, to the next string */
pl = pm + 1;
default:
break;
}
- *rv = 0;
- return 0;
+ return (0);
}
+#ifndef BUILDING_VARIANT
/*
* expand tilde from the passwd file.
*/
-static const Char *
-globtilde(pattern, patbuf, patbuf_len, pglob)
- const Char *pattern;
- Char *patbuf;
- size_t patbuf_len;
- glob_t *pglob;
+__private_extern__ const Char *
+globtilde(const Char *pattern, Char *patbuf, size_t patbuf_len, glob_t *pglob, locale_t loc)
{
struct passwd *pwd;
- char *h;
+ char *h, *sc;
const Char *p;
Char *b, *eb;
+ wchar_t wc;
+ wchar_t wbuf[MAXPATHLEN];
+ wchar_t *wbufend, *dc;
+ size_t clen;
+ mbstate_t mbs;
+ int too_long;
if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE))
- return pattern;
+ return (pattern);
/*
* Copy up to the end of the string or /
*/
eb = &patbuf[patbuf_len - 1];
- for (p = pattern + 1, h = (char *) patbuf;
- h < (char *)eb && *p && *p != SLASH; *h++ = *p++)
+ for (p = pattern + 1, b = patbuf;
+ b < eb && *p != EOS && UNPROT(*p) != SEP; *b++ = *p++)
continue;
- *h = EOS;
+ if (*p != EOS && UNPROT(*p) != SEP)
+ return (NULL);
+
+ *b = EOS;
+ h = NULL;
- if (((char *) patbuf)[0] == EOS) {
+ if (patbuf[0] == EOS) {
/*
* handle a plain ~ or ~/ by expanding $HOME first (iff
* we're not running setuid or setgid) and then trying
(pwd = getpwuid(getuid())) != NULL)
h = pwd->pw_dir;
else
- return pattern;
+ return (pattern);
}
}
else {
/*
* Expand a ~user
*/
- if ((pwd = getpwnam((char*) patbuf)) == NULL)
- return pattern;
+ if (g_Ctoc(patbuf, (char *)wbuf, sizeof(wbuf), loc))
+ return (NULL);
+ if ((pwd = getpwnam((char *)wbuf)) == NULL)
+ return (pattern);
else
h = pwd->pw_dir;
}
/* Copy the home directory */
- for (b = patbuf; b < eb && *h; *b++ = *h++)
+ dc = wbuf;
+ sc = h;
+ wbufend = wbuf + MAXPATHLEN - 1;
+ too_long = 1;
+ memset(&mbs, 0, sizeof(mbs));
+ while (dc <= wbufend) {
+ clen = mbrtowc(&wc, sc, MB_LEN_MAX, &mbs);
+ if (clen == (size_t)-1 || clen == (size_t)-2) {
+ /* XXX See initial comment #2. */
+ wc = (unsigned char)*sc;
+ clen = 1;
+ memset(&mbs, 0, sizeof(mbs));
+ }
+ if ((*dc++ = wc) == EOS) {
+ too_long = 0;
+ break;
+ }
+ sc += clen;
+ }
+ if (too_long)
+ return (NULL);
+
+ dc = wbuf;
+ for (b = patbuf; b < eb && *dc != EOS; *b++ = *dc++ | M_PROTECT)
continue;
+ if (*dc != EOS)
+ return (NULL);
/* Append the rest of the pattern */
- while (b < eb && (*b++ = *p++) != EOS)
- continue;
- *b = EOS;
+ if (*p != EOS) {
+ too_long = 1;
+ while (b <= eb) {
+ if ((*b++ = *p++) == EOS) {
+ too_long = 0;
+ break;
+ }
+ }
+ if (too_long)
+ return (NULL);
+ } else
+ *b = EOS;
- return patbuf;
+ return (patbuf);
}
+#endif /* BUILDING_VARIANT */
/*
* if things went well, nonzero if errors occurred.
*/
static int
-glob0(pattern, pglob, limit)
- const Char *pattern;
- glob_t *pglob;
- int *limit;
+glob0(const Char *pattern, glob_t *pglob, struct glob_limit *limit,
+ const char *origpat, locale_t loc)
{
const Char *qpatnext;
- int c, err, oldpathc;
- Char *bufnext, patbuf[MAXPATHLEN];
+ int err;
+ size_t oldpathc;
+ Char *bufnext, c, patbuf[MAXPATHLEN];
- qpatnext = globtilde(pattern, patbuf, MAXPATHLEN, pglob);
+ qpatnext = globtilde(pattern, patbuf, MAXPATHLEN, pglob, loc);
+ if (qpatnext == NULL) {
+ errno = E2BIG;
+ return (GLOB_NOSPACE);
+ }
oldpathc = pglob->gl_pathc;
bufnext = patbuf;
if (c == NOT)
++qpatnext;
if (*qpatnext == EOS ||
- g_strchr((Char *) qpatnext+1, RBRACKET) == NULL) {
+ g_strchr(qpatnext+1, RBRACKET) == NULL) {
*bufnext++ = LBRACKET;
if (c == NOT)
--qpatnext;
case STAR:
pglob->gl_flags |= GLOB_MAGCHAR;
/* collapse adjacent stars to one,
- * to avoid exponential behavior
+ * to ensure "**" at the end continues to match the
+ * empty string
*/
if (bufnext == patbuf || bufnext[-1] != M_ALL)
*bufnext++ = M_ALL;
qprintf("glob0:", patbuf);
#endif
- if ((err = glob1(patbuf, pglob, limit)) != 0)
+ if ((err = glob1(patbuf, pglob, limit, loc)) != 0)
return(err);
- /*
- * If there was no match we are going to append the pattern
- * if GLOB_NOCHECK was specified or if GLOB_NOMAGIC was specified
- * and the pattern did not contain any magic characters
- * GLOB_NOMAGIC is there just for compatibility with csh.
- */
- if (pglob->gl_pathc == oldpathc) {
- if (((pglob->gl_flags & GLOB_NOCHECK) ||
- ((pglob->gl_flags & GLOB_NOMAGIC) &&
- !(pglob->gl_flags & GLOB_MAGCHAR))))
- return(globextend(pattern, pglob, limit));
- else
- return(GLOB_NOMATCH);
- }
+ if (origpat != NULL)
+ return (globfinal(pglob, limit, oldpathc, origpat, loc));
+
+ return (0);
+}
+
+static int
+globfinal(glob_t *pglob, struct glob_limit *limit, size_t oldpathc,
+ const char *origpat, locale_t loc) {
+ if (pglob->gl_pathc == oldpathc)
+ return (err_nomatch(pglob, limit, origpat, loc));
+
if (!(pglob->gl_flags & GLOB_NOSORT))
qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc,
pglob->gl_pathc - oldpathc, sizeof(char *), compare);
- return(0);
+
+ return (0);
}
-static int
-compare(p, q)
- const void *p, *q;
+#ifndef BUILDING_VARIANT
+__private_extern__ int
+compare(const void *p, const void *q)
{
- return(strcmp(*(char **)p, *(char **)q));
+ return(strcoll(*(char **)p, *(char **)q));
}
+#endif /* BUILDING_VARIANT */
static int
-glob1(pattern, pglob, limit)
- Char *pattern;
- glob_t *pglob;
- int *limit;
+glob1(Char *pattern, glob_t *pglob, struct glob_limit *limit, locale_t loc)
{
Char pathbuf[MAXPATHLEN];
/* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */
if (*pattern == EOS)
- return(0);
- return(glob2(pathbuf, pathbuf, pathbuf + MAXPATHLEN - 1,
- pattern, pglob, limit));
+ return (0);
+ return (glob2(pathbuf, pathbuf, pathbuf + MAXPATHLEN - 1,
+ pattern, pglob, limit, loc));
}
/*
* meta characters.
*/
static int
-glob2(pathbuf, pathend, pathend_last, pattern, pglob, limit)
- Char *pathbuf, *pathend, *pathend_last, *pattern;
- glob_t *pglob;
- int *limit;
+glob2(Char *pathbuf, Char *pathend, Char *pathend_last, Char *pattern,
+ glob_t *pglob, struct glob_limit *limit, locale_t loc)
{
struct stat sb;
Char *p, *q;
for (anymeta = 0;;) {
if (*pattern == EOS) { /* End of pattern? */
*pathend = EOS;
- if (g_lstat(pathbuf, &sb, pglob))
- return(0);
-
- if (((pglob->gl_flags & GLOB_MARK) &&
- pathend[-1] != SEP) && (S_ISDIR(sb.st_mode)
- || (S_ISLNK(sb.st_mode) &&
- (g_stat(pathbuf, &sb, pglob) == 0) &&
- S_ISDIR(sb.st_mode)))) {
- if (pathend + 1 > pathend_last)
- return (GLOB_ABORTED);
+ if (g_lstat(pathbuf, &sb, pglob, loc))
+ return (0);
+
+ if ((pglob->gl_flags & GLOB_LIMIT) &&
+ limit->l_stat_cnt++ >= GLOB_LIMIT_STAT) {
+ errno = E2BIG;
+ return (GLOB_NOSPACE);
+ }
+ if ((pglob->gl_flags & GLOB_MARK) &&
+ UNPROT(pathend[-1]) != SEP &&
+ (S_ISDIR(sb.st_mode) ||
+ (S_ISLNK(sb.st_mode) &&
+ g_stat(pathbuf, &sb, pglob, loc) == 0 &&
+ S_ISDIR(sb.st_mode)))) {
+ if (pathend + 1 > pathend_last) {
+ errno = E2BIG;
+ return (GLOB_NOSPACE);
+ }
*pathend++ = SEP;
*pathend = EOS;
}
++pglob->gl_matchc;
- return(globextend(pathbuf, pglob, limit));
+ return (globextend(pathbuf, pglob, limit, NULL, loc));
}
/* Find end of next segment, copy tentatively to pathend. */
q = pathend;
p = pattern;
- while (*p != EOS && *p != SEP) {
+ while (*p != EOS && UNPROT(*p) != SEP) {
if (ismeta(*p))
anymeta = 1;
- if (q + 1 > pathend_last)
- return (GLOB_ABORTED);
+ if (q + 1 > pathend_last) {
+ errno = E2BIG;
+ return (GLOB_NOSPACE);
+ }
*q++ = *p++;
}
if (!anymeta) { /* No expansion, do next segment. */
pathend = q;
pattern = p;
- while (*pattern == SEP) {
- if (pathend + 1 > pathend_last)
- return (GLOB_ABORTED);
+ while (UNPROT(*pattern) == SEP) {
+ if (pathend + 1 > pathend_last) {
+ errno = E2BIG;
+ return (GLOB_NOSPACE);
+ }
*pathend++ = *pattern++;
}
} else /* Need expansion, recurse. */
- return(glob3(pathbuf, pathend, pathend_last, pattern, p,
- pglob, limit));
+ return(glob3(pathbuf, pathend, pathend_last, pattern,
+ p, pglob, limit, loc));
}
/* NOTREACHED */
}
static int
-glob3(pathbuf, pathend, pathend_last, pattern, restpattern, pglob, limit)
- Char *pathbuf, *pathend, *pathend_last, *pattern, *restpattern;
- glob_t *pglob;
- int *limit;
+glob3(Char *pathbuf, Char *pathend, Char *pathend_last,
+ Char *pattern, Char *restpattern,
+ glob_t *pglob, struct glob_limit *limit, locale_t loc)
{
struct dirent *dp;
DIR *dirp;
- int err;
- char buf[MAXPATHLEN];
+ int err, too_long, saverrno, saverrno2;
+ char buf[MAXPATHLEN + MB_LEN_MAX - 1];
/*
* The readdirfunc declaration can't be prototyped, because it is
*/
struct dirent *(*readdirfunc)();
- if (pathend > pathend_last)
- return (GLOB_ABORTED);
+ if (pathend > pathend_last) {
+ errno = E2BIG;
+ return (GLOB_NOSPACE);
+ }
*pathend = EOS;
+ if ((pglob->gl_errfunc != NULL || pglob->gl_errblk != NULL) &&
+ g_Ctoc(pathbuf, buf, sizeof(buf), loc)) {
+ errno = E2BIG;
+ return (GLOB_NOSPACE);
+ }
+
+ saverrno = errno;
errno = 0;
- if ((dirp = g_opendir(pathbuf, pglob)) == NULL) {
- /* TODO: don't call for ENOENT or ENOTDIR? */
- if (pglob->gl_errfunc) {
- if (g_Ctoc(pathbuf, buf, sizeof(buf)))
- return (GLOB_ABORTED);
- if (pglob->gl_errfunc(buf, errno) ||
- pglob->gl_flags & GLOB_ERR)
- return (GLOB_ABORTED);
- }
- return(0);
+ if ((dirp = g_opendir(pathbuf, pglob, loc)) == NULL) {
+ if (errno == ENOENT || errno == ENOTDIR)
+ return (0);
+
+ err = err_aborted(pglob, errno, buf);
+ if (errno == 0)
+ errno = saverrno;
+ return (err);
}
err = 0;
- /* Search directory for matching names. */
if (pglob->gl_flags & GLOB_ALTDIRFUNC)
readdirfunc = pglob->gl_readdir;
else
readdirfunc = readdir;
- while ((dp = (*readdirfunc)(dirp))) {
- u_char *sc;
+
+ errno = 0;
+ /* Search directory for matching names. */
+ while ((dp = (*readdirfunc)(dirp)) != NULL) {
+ char *sc;
Char *dc;
wchar_t wc;
size_t clen;
mbstate_t mbs;
+ if ((pglob->gl_flags & GLOB_LIMIT) &&
+ limit->l_readdir_cnt++ >= GLOB_LIMIT_READDIR) {
+ errno = E2BIG;
+ err = GLOB_NOSPACE;
+ break;
+ }
+
/* Initial DOT must be matched literally. */
- if (dp->d_name[0] == DOT && *pattern != DOT)
+ if (dp->d_name[0] == '.' && UNPROT(*pattern) != DOT) {
+ errno = 0;
continue;
+ }
memset(&mbs, 0, sizeof(mbs));
dc = pathend;
- sc = (u_char *) dp->d_name;
- while (dc < pathend_last) {
- clen = mbrtowc(&wc, sc, MB_LEN_MAX, &mbs);
+ sc = dp->d_name;
+ too_long = 1;
+ while (dc <= pathend_last) {
+ clen = mbrtowc_l(&wc, sc, MB_LEN_MAX, &mbs, loc);
if (clen == (size_t)-1 || clen == (size_t)-2) {
- wc = *sc;
+ /* XXX See initial comment #2. */
+ wc = (unsigned char)*sc;
clen = 1;
memset(&mbs, 0, sizeof(mbs));
}
- if ((*dc++ = wc) == EOS)
+ if ((*dc++ = wc) == EOS) {
+ too_long = 0;
break;
+ }
sc += clen;
}
- if (!match(pathend, pattern, restpattern)) {
+ if (too_long && (err = err_aborted(pglob, ENAMETOOLONG,
+ buf))) {
+ errno = ENAMETOOLONG;
+ break;
+ }
+ if (too_long || !match(pathend, pattern, restpattern, loc)) {
*pathend = EOS;
+ errno = 0;
continue;
}
+ if (errno == 0)
+ errno = saverrno;
err = glob2(pathbuf, --dc, pathend_last, restpattern,
- pglob, limit);
+ pglob, limit, loc);
if (err)
break;
+ errno = 0;
}
+ saverrno2 = errno;
if (pglob->gl_flags & GLOB_ALTDIRFUNC)
(*pglob->gl_closedir)(dirp);
else
closedir(dirp);
- return(err);
+ errno = saverrno2;
+
+ if (err)
+ return (err);
+
+ if (dp == NULL && errno != 0 &&
+ (err = err_aborted(pglob, errno, buf)))
+ return (err);
+
+ if (errno == 0)
+ errno = saverrno;
+ return (0);
}
+#ifndef BUILDING_VARIANT
/*
- * Extend the gl_pathv member of a glob_t structure to accomodate a new item,
+ * Extend the gl_pathv member of a glob_t structure to accommodate a new item,
* add the new item, and update gl_pathc.
*
* This assumes the BSD realloc, which only copies the block when its size
* Either gl_pathc is zero and gl_pathv is NULL; or gl_pathc > 0 and
* gl_pathv points to (gl_offs + gl_pathc + 1) items.
*/
-static int
-globextend(path, pglob, limit)
- const Char *path;
- glob_t *pglob;
- int *limit;
+__private_extern__ int
+globextend(const Char *path, glob_t *pglob, struct glob_limit *limit,
+ const char *origpat, locale_t loc)
{
char **pathv;
- int i;
- u_int newsize, len;
+ size_t i, newn, len;
char *copy;
const Char *p;
- if (*limit && pglob->gl_pathc > *limit) {
- errno = 0;
+ if ((pglob->gl_flags & GLOB_LIMIT) &&
+ pglob->gl_matchc > limit->l_path_lim) {
+ errno = E2BIG;
return (GLOB_NOSPACE);
}
- newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs);
- pathv = pglob->gl_pathv ?
- realloc((char *)pglob->gl_pathv, newsize) :
- malloc(newsize);
- if (pathv == NULL) {
- if (pglob->gl_pathv) {
- free(pglob->gl_pathv);
- pglob->gl_pathv = NULL;
- }
- return(GLOB_NOSPACE);
- }
+ newn = 2 + pglob->gl_pathc + pglob->gl_offs;
+ /* reallocarray(NULL, newn, size) is equivalent to malloc(newn*size). */
+ pathv = reallocarray(pglob->gl_pathv, newn, sizeof(*pathv));
+ if (pathv == NULL)
+ return (GLOB_NOSPACE);
if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) {
/* first time around -- clear initial gl_offs items */
pathv += pglob->gl_offs;
- for (i = pglob->gl_offs; --i >= 0; )
+ for (i = pglob->gl_offs + 1; --i > 0; )
*--pathv = NULL;
}
pglob->gl_pathv = pathv;
- for (p = path; *p++;)
- continue;
- len = MB_CUR_MAX * (size_t)(p - path); /* XXX overallocation */
- if ((copy = malloc(len)) != NULL) {
- if (g_Ctoc(path, copy, len)) {
+ if (origpat != NULL)
+ copy = strdup(origpat);
+ else {
+ for (p = path; *p++ != EOS;)
+ continue;
+ len = MB_CUR_MAX_L(loc) * (size_t)(p - path); /* XXX overallocation */
+ if ((copy = malloc(len)) != NULL) {
+ if (g_Ctoc(path, copy, len, loc)) {
+ free(copy);
+ errno = E2BIG;
+ return (GLOB_NOSPACE);
+ }
+ }
+ }
+ if (copy != NULL) {
+ limit->l_string_cnt += strlen(copy) + 1;
+ if ((pglob->gl_flags & GLOB_LIMIT) &&
+ limit->l_string_cnt >= GLOB_LIMIT_STRING) {
free(copy);
+ errno = E2BIG;
return (GLOB_NOSPACE);
}
pathv[pglob->gl_offs + pglob->gl_pathc++] = copy;
}
pathv[pglob->gl_offs + pglob->gl_pathc] = NULL;
- return(copy == NULL ? GLOB_NOSPACE : 0);
+ return (copy == NULL ? GLOB_NOSPACE : 0);
}
/*
- * pattern matching function for filenames. Each occurrence of the *
- * pattern causes a recursion level.
+ * pattern matching function for filenames.
*/
-static int
-match(name, pat, patend)
- Char *name, *pat, *patend;
+__private_extern__ int
+match(Char *name, Char *pat, Char *patend, locale_t loc)
{
int ok, negate_range;
- Char c, k;
-
- while (pat < patend) {
- c = *pat++;
- switch (c & M_MASK) {
- case M_ALL:
- if (pat == patend)
- return(1);
- do
- if (match(name, pat, patend))
- return(1);
- while (*name++ != EOS);
- return(0);
- case M_ONE:
- if (*name++ == EOS)
- return(0);
- break;
- case M_SET:
- ok = 0;
- if ((k = *name++) == EOS)
- return(0);
- if ((negate_range = ((*pat & M_MASK) == M_NOT)) != EOS)
- ++pat;
- while (((c = *pat++) & M_MASK) != M_END)
- if ((*pat & M_MASK) == M_RNG) {
- if (__collate_load_error ?
- CHAR(c) <= CHAR(k) && CHAR(k) <= CHAR(pat[1]) :
- __collate_range_cmp(CHAR(c), CHAR(k)) <= 0
- && __collate_range_cmp(CHAR(k), CHAR(pat[1])) <= 0
- )
+ Char c, k, *nextp, *nextn;
+
+ nextn = NULL;
+ nextp = NULL;
+
+ while (1) {
+ while (pat < patend) {
+ c = *pat++;
+ switch (c & M_MASK) {
+ case M_ALL:
+ if (pat == patend)
+ return (1);
+ if (*name == EOS)
+ return (0);
+ nextn = name + 1;
+ nextp = pat - 1;
+ break;
+ case M_ONE:
+ if (*name++ == EOS)
+ goto fail;
+ break;
+ case M_SET:
+ ok = 0;
+ if ((k = *name++) == EOS)
+ goto fail;
+ negate_range = ((*pat & M_MASK) == M_NOT);
+ if (negate_range != 0)
+ ++pat;
+ while (((c = *pat++) & M_MASK) != M_END)
+ if ((*pat & M_MASK) == M_RNG) {
+ if (loc->__collate_load_error ?
+ CHAR(c) <= CHAR(k) && CHAR(k) <= CHAR(pat[1]) :
+ __collate_range_cmp(CHAR(c), CHAR(k), loc) <= 0
+ && __collate_range_cmp(CHAR(k), CHAR(pat[1]), loc) <= 0
+ ) {
+ ok = 1;
+ }
+ pat += 2;
+ } else if (c == k)
ok = 1;
- pat += 2;
- } else if (c == k)
- ok = 1;
- if (ok == negate_range)
- return(0);
- break;
- default:
- if (*name++ != c)
- return(0);
- break;
+ if (ok == negate_range)
+ goto fail;
+ break;
+ default:
+ if (*name++ != c)
+ goto fail;
+ break;
+ }
}
+ if (*name == EOS)
+ return (1);
+
+ fail:
+ if (nextn == NULL)
+ break;
+ pat = nextp;
+ name = nextn;
}
- return(*name == EOS);
+ return (0);
}
/* Free allocated data belonging to a glob_t structure. */
void
-globfree(pglob)
- glob_t *pglob;
+globfree(glob_t *pglob)
{
- int i;
+ size_t i;
char **pp;
if (pglob->gl_pathv != NULL) {
pglob->gl_pathv = NULL;
}
}
+#endif /* !BUILDING_VARIANT */
static DIR *
-g_opendir(str, pglob)
- Char *str;
- glob_t *pglob;
+g_opendir(Char *str, glob_t *pglob, locale_t loc)
{
- char buf[MAXPATHLEN];
+ char buf[MAXPATHLEN + MB_LEN_MAX - 1];
- if (!*str)
+ if (*str == EOS)
strcpy(buf, ".");
else {
- if (g_Ctoc(str, buf, sizeof(buf)))
+ if (g_Ctoc(str, buf, sizeof(buf), loc)) {
+ errno = ENAMETOOLONG;
return (NULL);
+ }
}
if (pglob->gl_flags & GLOB_ALTDIRFUNC)
- return((*pglob->gl_opendir)(buf));
+ return ((*pglob->gl_opendir)(buf));
- return(opendir(buf));
+ return (opendir(buf));
}
static int
-g_lstat(fn, sb, pglob)
- Char *fn;
- struct stat *sb;
- glob_t *pglob;
+g_lstat(Char *fn, struct stat *sb, glob_t *pglob, locale_t loc)
{
- char buf[MAXPATHLEN];
+ char buf[MAXPATHLEN + MB_LEN_MAX - 1];
- if (g_Ctoc(fn, buf, sizeof(buf))) {
+ if (g_Ctoc(fn, buf, sizeof(buf), loc)) {
errno = ENAMETOOLONG;
return (-1);
}
if (pglob->gl_flags & GLOB_ALTDIRFUNC)
return((*pglob->gl_lstat)(buf, sb));
- return(lstat(buf, sb));
+ return (lstat(buf, sb));
}
static int
-g_stat(fn, sb, pglob)
- Char *fn;
- struct stat *sb;
- glob_t *pglob;
+g_stat(Char *fn, struct stat *sb, glob_t *pglob, locale_t loc)
{
- char buf[MAXPATHLEN];
+ char buf[MAXPATHLEN + MB_LEN_MAX - 1];
- if (g_Ctoc(fn, buf, sizeof(buf))) {
+ if (g_Ctoc(fn, buf, sizeof(buf), loc)) {
errno = ENAMETOOLONG;
return (-1);
}
if (pglob->gl_flags & GLOB_ALTDIRFUNC)
- return((*pglob->gl_stat)(buf, sb));
- return(stat(buf, sb));
+ return ((*pglob->gl_stat)(buf, sb));
+ return (stat(buf, sb));
}
-static Char *
-g_strchr(str, ch)
- Char *str;
- wchar_t ch;
+#ifndef BUILDING_VARIANT
+__private_extern__ const Char *
+g_strchr(const Char *str, wchar_t ch)
{
+
do {
if (*str == ch)
return (str);
return (NULL);
}
-static int
-g_Ctoc(str, buf, len)
- const Char *str;
- char *buf;
- u_int len;
+__private_extern__ int
+g_Ctoc(const Char *str, char *buf, size_t len, locale_t loc)
{
mbstate_t mbs;
size_t clen;
+ int mb_cur_max = MB_CUR_MAX_L(loc);
memset(&mbs, 0, sizeof(mbs));
- while (len >= MB_CUR_MAX) {
- clen = wcrtomb(buf, *str, &mbs);
- if (clen == (size_t)-1)
- return (1);
- if (*str == L'\0')
+ while (len >= mb_cur_max) {
+ clen = wcrtomb_l(buf, *str, &mbs, loc);
+ if (clen == (size_t)-1) {
+ /* XXX See initial comment #2. */
+ *buf = (char)CHAR(*str);
+ clen = 1;
+ memset(&mbs, 0, sizeof(mbs));
+ }
+ if (CHAR(*str) == EOS)
return (0);
str++;
buf += clen;
}
return (1);
}
+#endif /* !BUILDING_VARIANT */
+
+static int
+err_nomatch(glob_t *pglob, struct glob_limit *limit, const char *origpat, locale_t loc) {
+ /*
+ * If there was no match we are going to append the origpat
+ * if GLOB_NOCHECK was specified or if GLOB_NOMAGIC was specified
+ * and the origpat did not contain any magic characters
+ * GLOB_NOMAGIC is there just for compatibility with csh.
+ */
+ if ((pglob->gl_flags & GLOB_NOCHECK) ||
+ ((pglob->gl_flags & GLOB_NOMAGIC) &&
+ !(pglob->gl_flags & GLOB_MAGCHAR)))
+ return (globextend(NULL, pglob, limit, origpat, loc));
+ return (GLOB_NOMATCH);
+}
+
+static int
+err_aborted(glob_t *pglob, int err, char *buf) {
+#ifdef __BLOCKS__
+ if (pglob->gl_flags & _GLOB_ERR_BLOCK && pglob->gl_errblk(buf, errno)) {
+ return (GLOB_ABORTED);
+ } else
+#endif /* __BLOCKS__ */
+ if (pglob->gl_errfunc != NULL && pglob->gl_errfunc(buf, errno)) {
+ return (GLOB_ABORTED);
+ } else if (pglob->gl_flags & GLOB_ERR) {
+ return (GLOB_ABORTED);
+ }
+ return (0);
+}
#ifdef DEBUG
static void
-qprintf(str, s)
- const char *str;
- Char *s;
+qprintf(const char *str, Char *s)
{
Char *p;
- (void)printf("%s:\n", str);
- for (p = s; *p; p++)
- (void)printf("%c", CHAR(*p));
- (void)printf("\n");
- for (p = s; *p; p++)
- (void)printf("%c", *p & M_PROTECT ? '"' : ' ');
- (void)printf("\n");
- for (p = s; *p; p++)
- (void)printf("%c", ismeta(*p) ? '_' : ' ');
- (void)printf("\n");
+ (void)printf("%s\n", str);
+ if (s != NULL) {
+ for (p = s; *p != EOS; p++)
+ (void)printf("%c", (char)CHAR(*p));
+ (void)printf("\n");
+ for (p = s; *p != EOS; p++)
+ (void)printf("%c", (isprot(*p) ? '\\' : ' '));
+ (void)printf("\n");
+ for (p = s; *p != EOS; p++)
+ (void)printf("%c", (ismeta(*p) ? '_' : ' '));
+ (void)printf("\n");
+ }
}
#endif
projects / apple / libc.git / blobdiff