* Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
- *
+ *
* Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
* Reserved. This file contains Original Code and/or Modifications of
* Original Code as defined in and that are subject to the Apple Public
* except in compliance with the License. Please obtain a copy of the
* License at http://www.apple.com/publicsource and read it before using
* this file.
- *
+ *
* The Original Code and all software distributed under the License are
* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the
* License for the specific language governing rights and limitations
* under the License.
- *
+ *
* @APPLE_LICENSE_HEADER_END@
*/
/*
* @(#)glob.c 8.3 (Berkeley) 10/13/93
*/
-
/*
* glob(3) -- a superset of the one defined in POSIX 1003.2.
*
* GLOB_TILDE:
* expand ~user/foo to the /home/dir/of/user/foo
* GLOB_BRACE:
- * expand {1,2}{a,b} to 1a 1b 2a 2b
+ * expand {1,2}{a,b} to 1a 1b 2a 2b
* gl_matchc:
* Number of matches in the current invocation of glob.
*/
static int compare __P((const void *, const void *));
-static void g_Ctoc __P((const Char *, char *));
+static int g_Ctoc __P((const Char *, char *, u_int));
static int g_lstat __P((Char *, struct stat *, glob_t *));
static DIR *g_opendir __P((Char *, glob_t *));
static Char *g_strchr __P((Char *, int));
static Char *g_strcat __P((Char *, const Char *));
#endif
static int g_stat __P((Char *, struct stat *, glob_t *));
-static int glob0 __P((const Char *, glob_t *));
-static int glob1 __P((Char *, glob_t *));
-static int glob2 __P((Char *, Char *, Char *, glob_t *));
-static int glob3 __P((Char *, Char *, Char *, Char *, glob_t *));
-static int globextend __P((const Char *, glob_t *));
-static const Char * globtilde __P((const Char *, Char *, glob_t *));
-static int globexp1 __P((const Char *, glob_t *));
-static int globexp2 __P((const Char *, const Char *, glob_t *, int *));
+static int glob0 __P((const Char *, glob_t *, int *));
+static int glob1 __P((Char *, glob_t *, int *));
+static int glob2 __P((Char *, Char *, Char *, Char *, glob_t *, int *));
+static int glob3 __P((Char *, Char *, Char *, Char *, Char *, glob_t *, int *));
+static int globextend __P((const Char *, glob_t *, int *));
+static const Char *
+ globtilde __P((const Char *, Char *, size_t, glob_t *));
+static int globexp1 __P((const Char *, glob_t *, int *));
+static int globexp2 __P((const Char *, const Char *, glob_t *, int *, int *));
static int match __P((Char *, Char *, Char *));
#ifdef DEBUG
static void qprintf __P((const char *, Char *));
glob_t *pglob;
{
const u_char *patnext;
- int c;
- Char *bufnext, *bufend, patbuf[MAXPATHLEN+1];
+ int c, limit;
+ Char *bufnext, *bufend, patbuf[MAXPATHLEN];
patnext = (u_char *) pattern;
if (!(flags & GLOB_APPEND)) {
if (!(flags & GLOB_DOOFFS))
pglob->gl_offs = 0;
}
+#if !defined(GLOB_MAXPATH)
+#define GLOB_MAXPATH 0x1000
+#endif
+ if (flags & GLOB_MAXPATH)
+ limit = pglob->gl_matchc;
+ else
+ limit = 0;
pglob->gl_flags = flags & ~GLOB_MAGCHAR;
pglob->gl_errfunc = errfunc;
pglob->gl_matchc = 0;
bufnext = patbuf;
- bufend = bufnext + MAXPATHLEN;
+ bufend = bufnext + MAXPATHLEN - 1;
if (flags & GLOB_QUOTE) {
/* Protect the quoted characters. */
- while (bufnext < bufend && (c = *patnext++) != EOS)
+ while (bufnext < bufend && (c = *patnext++) != EOS)
if (c == QUOTE) {
if ((c = *patnext++) == EOS) {
c = QUOTE;
else
*bufnext++ = c;
}
- else
- while (bufnext < bufend && (c = *patnext++) != EOS)
+ else
+ while (bufnext < bufend && (c = *patnext++) != EOS)
*bufnext++ = c;
*bufnext = EOS;
if (flags & GLOB_BRACE)
- return globexp1(patbuf, pglob);
+ return globexp1(patbuf, pglob, &limit);
else
- return glob0(patbuf, pglob);
+ return glob0(patbuf, pglob, &limit);
}
/*
* invoke the standard globbing routine to glob the rest of the magic
* characters
*/
-static int globexp1(pattern, pglob)
+static int
+globexp1(pattern, pglob, limit)
const Char *pattern;
glob_t *pglob;
+ int *limit;
{
const Char* ptr = pattern;
int rv;
/* Protect a single {}, for find(1), like csh */
if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS)
- return glob0(pattern, pglob);
+ return glob0(pattern, pglob, limit);
while ((ptr = (const Char *) g_strchr((Char *) ptr, LBRACE)) != NULL)
- if (!globexp2(ptr, pattern, pglob, &rv))
+ if (!globexp2(ptr, pattern, pglob, &rv, limit))
return rv;
- return glob0(pattern, pglob);
+ return glob0(pattern, pglob, limit);
}
* If it succeeds then it invokes globexp1 with the new pattern.
* If it fails then it tries to glob the rest of the pattern and returns.
*/
-static int globexp2(ptr, pattern, pglob, rv)
+static int
+globexp2(ptr, pattern, pglob, rv, limit)
const Char *ptr, *pattern;
glob_t *pglob;
- int *rv;
+ int *rv, *limit;
{
int i;
Char *lm, *ls;
const Char *pe, *pm, *pl;
- Char patbuf[MAXPATHLEN + 1];
+ Char patbuf[MAXPATHLEN];
/* copy part up to the brace */
for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++)
continue;
+ *lm = EOS;
ls = lm;
/* Find the balanced brace */
for (pm = pe++; *pe != RBRACKET && *pe != EOS; pe++)
continue;
if (*pe == EOS) {
- /*
+ /*
* We could not find a matching RBRACKET.
* Ignore and just look for RBRACE
*/
/* Non matching braces; just glob the pattern */
if (i != 0 || *pe == EOS) {
- *rv = glob0(patbuf, pglob);
+ *rv = glob0(patbuf, pglob, limit);
return 0;
}
for (pl = pm++; *pm != RBRACKET && *pm != EOS; pm++)
continue;
if (*pm == EOS) {
- /*
+ /*
* We could not find a matching RBRACKET.
* Ignore and just look for RBRACE
*/
/* Append the current string */
for (lm = ls; (pl < pm); *lm++ = *pl++)
continue;
- /*
+ /*
* Append the rest of the pattern after the
* closing brace
*/
#ifdef DEBUG
qprintf("globexp2:", patbuf);
#endif
- *rv = globexp1(patbuf, pglob);
+ *rv = globexp1(patbuf, pglob, limit);
/* move after the comma, to the next string */
pl = pm + 1;
* expand tilde from the passwd file.
*/
static const Char *
-globtilde(pattern, patbuf, pglob)
+globtilde(pattern, patbuf, patbuf_len, pglob)
const Char *pattern;
Char *patbuf;
+ size_t patbuf_len;
glob_t *pglob;
{
struct passwd *pwd;
char *h;
const Char *p;
- Char *b;
+ Char *b, *eb;
if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE))
return pattern;
- /* Copy up to the end of the string or / */
- for (p = pattern + 1, h = (char *) patbuf; *p && *p != SLASH;
- *h++ = *p++)
+ /*
+ * 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++)
continue;
*h = EOS;
if (((char *) patbuf)[0] == EOS) {
- /*
- * handle a plain ~ or ~/ by expanding $HOME
- * first and then trying the password file
+ /*
+ * handle a plain ~ or ~/ by expanding $HOME first (iff
+ * we're not running setuid or setgid) and then trying
+ * the password file
*/
- if ((h = getenv("HOME")) == NULL) {
- if ((pwd = getpwuid(getuid())) == NULL)
- return pattern;
- else
+ if (
+#if 0
+#ifndef __NETBSD_SYSCALLS
+ issetugid() != 0 ||
+#endif
+#endif
+ (h = getenv("HOME")) == NULL) {
+ if (((h = getlogin()) != NULL &&
+ (pwd = getpwnam(h)) != NULL) ||
+ (pwd = getpwuid(getuid())) != NULL)
h = pwd->pw_dir;
+ else
+ return pattern;
}
}
else {
}
/* Copy the home directory */
- for (b = patbuf; *h; *b++ = *h++)
+ for (b = patbuf; b < eb && *h; *b++ = *h++)
continue;
-
+
/* Append the rest of the pattern */
- while ((*b++ = *p++) != EOS)
+ while (b < eb && (*b++ = *p++) != EOS)
continue;
+ *b = EOS;
return patbuf;
}
-
+
/*
* The main glob() routine: compiles the pattern (optionally processing
* to find no matches.
*/
static int
-glob0(pattern, pglob)
+glob0(pattern, pglob, limit)
const Char *pattern;
glob_t *pglob;
+ int *limit;
{
const Char *qpatnext;
int c, err, oldpathc;
- Char *bufnext, patbuf[MAXPATHLEN+1];
+ Char *bufnext, patbuf[MAXPATHLEN];
- qpatnext = globtilde(pattern, patbuf, pglob);
+ qpatnext = globtilde(pattern, patbuf, MAXPATHLEN, pglob);
oldpathc = pglob->gl_pathc;
bufnext = patbuf;
break;
case STAR:
pglob->gl_flags |= GLOB_MAGCHAR;
- /* collapse adjacent stars to one,
+ /* collapse adjacent stars to one,
* to avoid exponential behavior
*/
if (bufnext == patbuf || bufnext[-1] != M_ALL)
qprintf("glob0:", patbuf);
#endif
- if ((err = glob1(patbuf, pglob)) != 0)
+ if ((err = glob1(patbuf, pglob, limit)) != 0)
return(err);
/*
- * If there was no match we are going to append the pattern
+ * 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 &&
- ((pglob->gl_flags & GLOB_NOCHECK) ||
+ if (pglob->gl_pathc == oldpathc &&
+ ((pglob->gl_flags & GLOB_NOCHECK) ||
((pglob->gl_flags & GLOB_NOMAGIC) &&
!(pglob->gl_flags & GLOB_MAGCHAR))))
- return(globextend(pattern, pglob));
- else if (!(pglob->gl_flags & GLOB_NOSORT))
+ return(globextend(pattern, pglob, limit));
+ else if (!(pglob->gl_flags & GLOB_NOSORT))
qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc,
pglob->gl_pathc - oldpathc, sizeof(char *), compare);
return(0);
}
static int
-glob1(pattern, pglob)
+glob1(pattern, pglob, limit)
Char *pattern;
glob_t *pglob;
+ int *limit;
{
- Char pathbuf[MAXPATHLEN+1];
+ Char pathbuf[MAXPATHLEN];
/* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */
if (*pattern == EOS)
return(0);
- return(glob2(pathbuf, pathbuf, pattern, pglob));
+ return(glob2(pathbuf, pathbuf, pathbuf + MAXPATHLEN - 1,
+ pattern, pglob, limit));
}
/*
* meta characters.
*/
static int
-glob2(pathbuf, pathend, pattern, pglob)
- Char *pathbuf, *pathend, *pattern;
+glob2(pathbuf, pathend, pathend_last, pattern, pglob, limit)
+ Char *pathbuf, *pathend, *pathend_last, *pattern;
glob_t *pglob;
+ int *limit;
{
struct stat sb;
Char *p, *q;
*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 (1);
*pathend++ = SEP;
*pathend = EOS;
}
++pglob->gl_matchc;
- return(globextend(pathbuf, pglob));
+ return(globextend(pathbuf, pglob, limit));
}
/* Find end of next segment, copy tentatively to pathend. */
while (*p != EOS && *p != SEP) {
if (ismeta(*p))
anymeta = 1;
+ if (q + 1 > pathend_last)
+ return (1);
*q++ = *p++;
}
if (!anymeta) { /* No expansion, do next segment. */
pathend = q;
pattern = p;
- while (*pattern == SEP)
+ while (*pattern == SEP) {
+ if (pathend + 1 > pathend_last)
+ return (1);
*pathend++ = *pattern++;
+ }
} else /* Need expansion, recurse. */
- return(glob3(pathbuf, pathend, pattern, p, pglob));
+ return(glob3(pathbuf, pathend, pathend_last, pattern, p,
+ pglob, limit));
}
/* NOTREACHED */
}
static int
-glob3(pathbuf, pathend, pattern, restpattern, pglob)
- Char *pathbuf, *pathend, *pattern, *restpattern;
+glob3(pathbuf, pathend, pathend_last, pattern, restpattern, pglob, limit)
+ Char *pathbuf, *pathend, *pathend_last, *pattern, *restpattern;
glob_t *pglob;
+ int *limit;
{
register struct dirent *dp;
DIR *dirp;
*/
struct dirent *(*readdirfunc)();
+ if (pathend > pathend_last)
+ return (1);
*pathend = EOS;
errno = 0;
-
+
if ((dirp = g_opendir(pathbuf, pglob)) == NULL) {
/* TODO: don't call for ENOENT or ENOTDIR? */
if (pglob->gl_errfunc) {
- g_Ctoc(pathbuf, buf);
+ if (g_Ctoc(pathbuf, buf, sizeof(buf)))
+ return (GLOB_ABEND);
if (pglob->gl_errfunc(buf, errno) ||
pglob->gl_flags & GLOB_ERR)
return (GLOB_ABEND);
/* Initial DOT must be matched literally. */
if (dp->d_name[0] == DOT && *pattern != DOT)
continue;
- for (sc = (u_char *) dp->d_name, dc = pathend;
- (*dc++ = *sc++) != EOS;)
- continue;
+ dc = pathend;
+ sc = (u_char *) dp->d_name;
+ while (dc < pathend_last && (*dc++ = *sc++) != EOS)
+ ;
if (!match(pathend, pattern, restpattern)) {
*pathend = EOS;
continue;
}
- err = glob2(pathbuf, --dc, restpattern, pglob);
+ err = glob2(pathbuf, --dc, pathend_last, restpattern,
+ pglob, limit);
if (err)
break;
}
* gl_pathv points to (gl_offs + gl_pathc + 1) items.
*/
static int
-globextend(path, pglob)
+globextend(path, pglob, limit)
const Char *path;
glob_t *pglob;
+ int *limit;
{
register char **pathv;
register int i;
- u_int newsize;
+ u_int newsize, len;
char *copy;
const Char *p;
+ if (*limit && pglob->gl_pathc > *limit)
+#if !defined(GLOB_LIMIT)
+#define GLOB_LIMIT (-3)
+#endif
+ return (GLOB_LIMIT);
+
newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs);
- pathv = pglob->gl_pathv ?
+ pathv = pglob->gl_pathv ?
realloc((char *)pglob->gl_pathv, newsize) :
malloc(newsize);
- if (pathv == NULL)
+ if (pathv == NULL) {
+ if (pglob->gl_pathv) {
+ free(pglob->gl_pathv);
+ pglob->gl_pathv = NULL;
+ }
return(GLOB_NOSPACE);
+ }
if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) {
/* first time around -- clear initial gl_offs items */
for (p = path; *p++;)
continue;
- if ((copy = malloc(p - path)) != NULL) {
- g_Ctoc(path, copy);
+ len = (size_t)(p - path);
+ if ((copy = malloc(len)) != NULL) {
+ if (g_Ctoc(path, copy, len)) {
+ free(copy);
+ 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);
}
-
/*
* pattern matching function for filenames. Each occurrence of the *
* pattern causes a recursion level.
case M_ALL:
if (pat == patend)
return(1);
- do
+ do
if (match(name, pat, patend))
return(1);
while (*name++ != EOS);
++pat;
while (((c = *pat++) & M_MASK) != M_END)
if ((*pat & M_MASK) == M_RNG) {
- if (c <= k && k <= pat[1])
- ok = 1;
- pat += 2;
+ if (c <= k && k <= pat[1])
+ ok = 1;
+ pat += 2;
} else if (c == k)
ok = 1;
if (ok == negate_range)
if (*pp)
free(*pp);
free(pglob->gl_pathv);
+ pglob->gl_pathv = NULL;
}
}
if (!*str)
strcpy(buf, ".");
- else
- g_Ctoc(str, buf);
+ else {
+ if (g_Ctoc(str, buf, sizeof(buf)))
+ return (NULL);
+ }
if (pglob->gl_flags & GLOB_ALTDIRFUNC)
return((*pglob->gl_opendir)(buf));
{
char buf[MAXPATHLEN];
- g_Ctoc(fn, buf);
+ if (g_Ctoc(fn, buf, sizeof(buf))) {
+ errno = ENAMETOOLONG;
+ return (-1);
+ }
if (pglob->gl_flags & GLOB_ALTDIRFUNC)
return((*pglob->gl_lstat)(buf, sb));
return(lstat(buf, sb));
{
char buf[MAXPATHLEN];
- g_Ctoc(fn, buf);
+ if (g_Ctoc(fn, buf, sizeof(buf))) {
+ errno = ENAMETOOLONG;
+ return (-1);
+ }
if (pglob->gl_flags & GLOB_ALTDIRFUNC)
return((*pglob->gl_stat)(buf, sb));
return(stat(buf, sb));
return (NULL);
}
-#ifdef notdef
-static Char *
-g_strcat(dst, src)
- Char *dst;
- const Char* src;
-{
- Char *sdst = dst;
-
- while (*dst++)
- continue;
- --dst;
- while((*dst++ = *src++) != EOS)
- continue;
-
- return (sdst);
-}
-#endif
-
-static void
-g_Ctoc(str, buf)
- register const Char *str;
+static int
+g_Ctoc(str, buf, len)
+ const Char *str;
char *buf;
+ u_int len;
{
- register char *dc;
- for (dc = buf; (*dc++ = *str++) != EOS;)
- continue;
+ while (len--) {
+ if ((*buf++ = *str++) == '\0')
+ return (0);
+ }
+ return (1);
}
#ifdef DEBUG
-static void
+static void
qprintf(str, s)
const char *str;
register Char *s;
projects / apple / libinfo.git / commitdiff
