+/* $OpenBSD: glob.c,v 1.26 2005/11/28 17:50:12 deraadt Exp $ */
/*
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
* 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.
*
* SUCH DAMAGE.
*/
+/* OPENBSD ORIGINAL: lib/libc/gen/glob.c */
+
#include "includes.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <dirent.h>
#include <ctype.h>
+#include <errno.h>
+#include <pwd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
#if !defined(HAVE_GLOB) || !defined(GLOB_HAS_ALTDIRFUNC) || \
- !defined(GLOB_HAS_GL_MATCHC)
+ !defined(GLOB_HAS_GL_MATCHC) || \
+ !defined(HAVE_DECL_GLOB_NOMATCH) || HAVE_DECL_GLOB_NOMATCH == 0 || \
+ defined(BROKEN_GLOB)
-#if defined(LIBC_SCCS) && !defined(lint)
-#if 0
-static char sccsid[] = "@(#)glob.c 8.3 (Berkeley) 10/13/93";
+static long
+get_arg_max(void)
+{
+#ifdef ARG_MAX
+ return(ARG_MAX);
+#elif defined(HAVE_SYSCONF) && defined(_SC_ARG_MAX)
+ return(sysconf(_SC_ARG_MAX));
#else
-static char rcsid[] = "$OpenBSD: glob.c,v 1.9 2001/03/18 17:18:58 deraadt Exp $";
+ return(256); /* XXX: arbitrary */
#endif
-#endif /* LIBC_SCCS and not lint */
+}
/*
* glob(3) -- a superset of the one defined in POSIX 1003.2.
#define RBRACKET ']'
#define SEP '/'
#define STAR '*'
+#undef TILDE /* Some platforms may already define it */
#define TILDE '~'
#define UNDERSCORE '_'
#define LBRACE '{'
#define ismeta(c) (((c)&M_QUOTE) != 0)
-static int compare __P((const void *, const void *));
-static void g_Ctoc __P((const Char *, char *));
-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));
-#ifdef notdef
-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 *, size_t *));
-static int glob2 __P((Char *, Char *, Char *, glob_t *, size_t *));
-static int glob3 __P((Char *, Char *, Char *, Char *, glob_t *,
- size_t *));
-static int globextend __P((const Char *, glob_t *, size_t *));
+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 *, int);
+static int g_stat(Char *, struct stat *, glob_t *);
+static int glob0(const Char *, glob_t *);
+static int glob1(Char *, Char *, glob_t *, size_t *);
+static int glob2(Char *, Char *, Char *, Char *, Char *, Char *,
+ glob_t *, size_t *);
+static int glob3(Char *, Char *, Char *, Char *, Char *,
+ Char *, Char *, glob_t *, size_t *);
+static int globextend(const Char *, glob_t *, size_t *);
static const Char *
- globtilde __P((const Char *, Char *, size_t, glob_t *));
-static int globexp1 __P((const Char *, glob_t *));
-static int globexp2 __P((const Char *, const Char *, glob_t *, int *));
-static int match __P((Char *, Char *, Char *));
+ globtilde(const Char *, Char *, size_t, glob_t *);
+static int globexp1(const Char *, glob_t *);
+static int globexp2(const Char *, const Char *, glob_t *, int *);
+static int match(Char *, Char *, Char *);
#ifdef DEBUG
-static void qprintf __P((const char *, Char *));
+static void qprintf(const char *, Char *);
#endif
int
-glob(pattern, flags, errfunc, pglob)
- const char *pattern;
- int flags, (*errfunc) __P((const char *, int));
- glob_t *pglob;
+glob(const char *pattern, int flags, int (*errfunc)(const char *, int),
+ glob_t *pglob)
{
const u_char *patnext;
int c;
- Char *bufnext, *bufend, patbuf[MAXPATHLEN+1];
+ Char *bufnext, *bufend, patbuf[MAXPATHLEN];
patnext = (u_char *) pattern;
if (!(flags & GLOB_APPEND)) {
pglob->gl_matchc = 0;
bufnext = patbuf;
- bufend = bufnext + MAXPATHLEN;
+ bufend = bufnext + MAXPATHLEN - 1;
if (flags & GLOB_NOESCAPE)
- while (bufnext < bufend && (c = *patnext++) != EOS)
- *bufnext++ = c;
+ while (bufnext < bufend && (c = *patnext++) != EOS)
+ *bufnext++ = c;
else {
/* Protect the quoted characters. */
while (bufnext < bufend && (c = *patnext++) != EOS)
--patnext;
}
*bufnext++ = c | M_PROTECT;
- }
- else
+ } else
*bufnext++ = c;
}
*bufnext = EOS;
* invoke the standard globbing routine to glob the rest of the magic
* characters
*/
-static int globexp1(pattern, pglob)
- const Char *pattern;
- glob_t *pglob;
+static int
+globexp1(const Char *pattern, glob_t *pglob)
{
const Char* ptr = pattern;
int rv;
* 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)
- const Char *ptr, *pattern;
- glob_t *pglob;
- int *rv;
+static int
+globexp2(const Char *ptr, const Char *pattern, glob_t *pglob, int *rv)
{
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 */
if (*pe == LBRACKET) {
/* Ignore everything between [] */
for (pm = pe++; *pe != RBRACKET && *pe != EOS; pe++)
- continue;
+ ;
if (*pe == EOS) {
/*
* We could not find a matching RBRACKET.
*/
pe = pm;
}
- }
- else if (*pe == LBRACE)
+ } else if (*pe == LBRACE)
i++;
else if (*pe == RBRACE) {
if (i == 0)
return 0;
}
- for (i = 0, pl = pm = ptr; pm <= pe; pm++)
+ for (i = 0, pl = pm = ptr; pm <= pe; pm++) {
switch (*pm) {
case LBRACKET:
/* Ignore everything between [] */
for (pl = pm++; *pm != RBRACKET && *pm != EOS; pm++)
- continue;
+ ;
if (*pm == EOS) {
/*
* We could not find a matching RBRACKET.
case RBRACE:
if (i) {
- i--;
- break;
+ i--;
+ break;
}
/* FALLTHROUGH */
case COMMA:
else {
/* Append the current string */
for (lm = ls; (pl < pm); *lm++ = *pl++)
- continue;
+ ;
+
/*
* Append the rest of the pattern after the
* closing brace
*/
- for (pl = pe + 1; (*lm++ = *pl++) != EOS;)
- continue;
+ for (pl = pe + 1; (*lm++ = *pl++) != EOS; )
+ ;
/* Expand the current pattern */
#ifdef DEBUG
default:
break;
}
+ }
*rv = 0;
return 0;
}
* 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;
+globtilde(const Char *pattern, Char *patbuf, size_t patbuf_len, glob_t *pglob)
{
struct passwd *pwd;
char *h;
eb = &patbuf[patbuf_len - 1];
for (p = pattern + 1, h = (char *) patbuf;
h < (char *)eb && *p && *p != SLASH; *h++ = *p++)
- continue;
+ ;
*h = EOS;
+#if 0
+ if (h == (char *)eb)
+ return what;
+#endif
+
if (((char *) patbuf)[0] == EOS) {
/*
* handle a plain ~ or ~/ by expanding $HOME
else
h = pwd->pw_dir;
}
- }
- else {
+ } else {
/*
* Expand a ~user
*/
/* Copy the home directory */
for (b = patbuf; b < eb && *h; *b++ = *h++)
- continue;
+ ;
/* Append the rest of the pattern */
while (b < eb && (*b++ = *p++) != EOS)
- continue;
+ ;
*b = EOS;
return patbuf;
* to find no matches.
*/
static int
-glob0(pattern, pglob)
- const Char *pattern;
- glob_t *pglob;
+glob0(const Char *pattern, glob_t *pglob)
{
const Char *qpatnext;
int c, err, oldpathc;
- Char *bufnext, patbuf[MAXPATHLEN+1];
+ Char *bufnext, patbuf[MAXPATHLEN];
size_t limit = 0;
- qpatnext = globtilde(pattern, patbuf, sizeof(patbuf) / sizeof(Char),
- pglob);
+ qpatnext = globtilde(pattern, patbuf, MAXPATHLEN, pglob);
oldpathc = pglob->gl_pathc;
bufnext = patbuf;
* to avoid exponential behavior
*/
if (bufnext == patbuf || bufnext[-1] != M_ALL)
- *bufnext++ = M_ALL;
+ *bufnext++ = M_ALL;
break;
default:
*bufnext++ = CHAR(c);
qprintf("glob0:", patbuf);
#endif
- if ((err = glob1(patbuf, pglob, &limit)) != 0)
+ if ((err = glob1(patbuf, patbuf+MAXPATHLEN-1, pglob, &limit)) != 0)
return(err);
/*
}
static int
-compare(p, q)
- const void *p, *q;
+compare(const void *p, const void *q)
{
return(strcmp(*(char **)p, *(char **)q));
}
static int
-glob1(pattern, pglob, limitp)
- Char *pattern;
- glob_t *pglob;
- size_t *limitp;
+glob1(Char *pattern, Char *pattern_last, glob_t *pglob, size_t *limitp)
{
- 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, limitp));
+ return(glob2(pathbuf, pathbuf+MAXPATHLEN-1,
+ pathbuf, pathbuf+MAXPATHLEN-1,
+ pattern, pattern_last, pglob, limitp));
}
/*
* meta characters.
*/
static int
-glob2(pathbuf, pathend, pattern, pglob, limitp)
- Char *pathbuf, *pathend, *pattern;
- glob_t *pglob;
- size_t *limitp;
+glob2(Char *pathbuf, Char *pathbuf_last, Char *pathend, Char *pathend_last,
+ Char *pattern, Char *pattern_last, glob_t *pglob, size_t *limitp)
{
struct stat sb;
Char *p, *q;
return(0);
if (((pglob->gl_flags & GLOB_MARK) &&
- pathend[-1] != SEP) && (S_ISDIR(sb.st_mode)
- || (S_ISLNK(sb.st_mode) &&
+ 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;
}
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,
- limitp));
+ }
+ } else
+ /* Need expansion, recurse. */
+ return(glob3(pathbuf, pathbuf_last, pathend,
+ pathend_last, pattern, p, pattern_last,
+ pglob, limitp));
}
/* NOTREACHED */
}
static int
-glob3(pathbuf, pathend, pattern, restpattern, pglob, limitp)
- Char *pathbuf, *pathend, *pattern, *restpattern;
- glob_t *pglob;
- size_t *limitp;
+glob3(Char *pathbuf, Char *pathbuf_last, Char *pathend, Char *pathend_last,
+ Char *pattern, Char *restpattern, Char *restpattern_last, glob_t *pglob,
+ size_t *limitp)
{
- register struct dirent *dp;
+ struct dirent *dp;
DIR *dirp;
int err;
char buf[MAXPATHLEN];
* and dirent.h as taking pointers to differently typed opaque
* structures.
*/
- struct dirent *(*readdirfunc)();
+ struct dirent *(*readdirfunc)(void *);
+ 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_ABORTED);
if (pglob->gl_errfunc(buf, errno) ||
pglob->gl_flags & GLOB_ERR)
- return (GLOB_ABORTED);
+ return(GLOB_ABORTED);
}
return(0);
}
if (pglob->gl_flags & GLOB_ALTDIRFUNC)
readdirfunc = pglob->gl_readdir;
else
- readdirfunc = readdir;
+ readdirfunc = (struct dirent *(*)(void *))readdir;
while ((dp = (*readdirfunc)(dirp))) {
- register u_char *sc;
- register Char *dc;
+ u_char *sc;
+ Char *dc;
/* 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 (dc >= pathend_last) {
+ *dc = EOS;
+ err = 1;
+ break;
+ }
+
if (!match(pathend, pattern, restpattern)) {
*pathend = EOS;
continue;
}
- err = glob2(pathbuf, --dc, restpattern, pglob, limitp);
+ err = glob2(pathbuf, pathbuf_last, --dc, pathend_last,
+ restpattern, restpattern_last, pglob, limitp);
if (err)
break;
}
/*
- * 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
* gl_pathv points to (gl_offs + gl_pathc + 1) items.
*/
static int
-globextend(path, pglob, limitp)
- const Char *path;
- glob_t *pglob;
- size_t *limitp;
+globextend(const Char *path, glob_t *pglob, size_t *limitp)
{
- register char **pathv;
- register int i;
+ char **pathv;
+ int i;
u_int newsize, len;
char *copy;
const Char *p;
pathv = pglob->gl_pathv ? realloc((char *)pglob->gl_pathv, newsize) :
malloc(newsize);
if (pathv == NULL) {
- if (pglob->gl_pathv)
+ if (pglob->gl_pathv) {
free(pglob->gl_pathv);
+ pglob->gl_pathv = NULL;
+ }
return(GLOB_NOSPACE);
}
pglob->gl_pathv = pathv;
for (p = path; *p++;)
- continue;
+ ;
len = (size_t)(p - path);
*limitp += len;
if ((copy = malloc(len)) != NULL) {
- g_Ctoc(path, copy);
+ 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;
if ((pglob->gl_flags & GLOB_LIMIT) &&
- newsize + *limitp >= ARG_MAX) {
+ newsize + *limitp >= (u_int) get_arg_max()) {
errno = 0;
return(GLOB_NOSPACE);
}
* pattern causes a recursion level.
*/
static int
-match(name, pat, patend)
- register Char *name, *pat, *patend;
+match(Char *name, Char *pat, Char *patend)
{
int ok, negate_range;
Char c, k;
case M_ALL:
if (pat == patend)
return(1);
- do
+ do {
if (match(name, pat, patend))
return(1);
- while (*name++ != EOS);
+ } while (*name++ != EOS);
return(0);
case M_ONE:
if (*name++ == EOS)
/* Free allocated data belonging to a glob_t structure. */
void
-globfree(pglob)
- glob_t *pglob;
+globfree(glob_t *pglob)
{
- register int i;
- register char **pp;
+ int i;
+ char **pp;
if (pglob->gl_pathv != NULL) {
pp = pglob->gl_pathv + pglob->gl_offs;
if (*pp)
free(*pp);
free(pglob->gl_pathv);
+ pglob->gl_pathv = NULL;
}
}
static DIR *
-g_opendir(str, pglob)
- register Char *str;
- glob_t *pglob;
+g_opendir(Char *str, glob_t *pglob)
{
char buf[MAXPATHLEN];
if (!*str)
- strcpy(buf, ".");
- else
- g_Ctoc(str, buf);
+ strlcpy(buf, ".", sizeof buf);
+ else {
+ if (g_Ctoc(str, buf, sizeof(buf)))
+ return(NULL);
+ }
if (pglob->gl_flags & GLOB_ALTDIRFUNC)
return((*pglob->gl_opendir)(buf));
}
static int
-g_lstat(fn, sb, pglob)
- register Char *fn;
- struct stat *sb;
- glob_t *pglob;
+g_lstat(Char *fn, struct stat *sb, glob_t *pglob)
{
char buf[MAXPATHLEN];
- g_Ctoc(fn, buf);
+ if (g_Ctoc(fn, buf, sizeof(buf)))
+ return(-1);
if (pglob->gl_flags & GLOB_ALTDIRFUNC)
return((*pglob->gl_lstat)(buf, sb));
return(lstat(buf, sb));
}
static int
-g_stat(fn, sb, pglob)
- register Char *fn;
- struct stat *sb;
- glob_t *pglob;
+g_stat(Char *fn, struct stat *sb, glob_t *pglob)
{
char buf[MAXPATHLEN];
- g_Ctoc(fn, buf);
+ if (g_Ctoc(fn, buf, sizeof(buf)))
+ return(-1);
if (pglob->gl_flags & GLOB_ALTDIRFUNC)
return((*pglob->gl_stat)(buf, sb));
return(stat(buf, sb));
}
static Char *
-g_strchr(str, ch)
- Char *str;
- int ch;
+g_strchr(Char *str, int ch)
{
do {
if (*str == ch)
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;
- char *buf;
+static int
+g_Ctoc(const Char *str, char *buf, u_int len)
{
- register char *dc;
- for (dc = buf; (*dc++ = *str++) != EOS;)
- continue;
+ while (len--) {
+ if ((*buf++ = *str++) == EOS)
+ return (0);
+ }
+ return (1);
}
#ifdef DEBUG
static void
-qprintf(str, s)
- const char *str;
- register Char *s;
+qprintf(const char *str, Char *s)
{
- register Char *p;
+ Char *p;
(void)printf("%s:\n", str);
for (p = s; *p; p++)
andersk / openssh.git / blobdiff