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/* OPENBSD ORIGINAL: lib/libc/gen/glob.c */
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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* This code is derived from software contributed to Berkeley by
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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#elif defined(HAVE_SYSCONF) && defined(_SC_ARG_MAX)
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return(sysconf(_SC_ARG_MAX));
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return(256); /* XXX: arbitrary */
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#if !defined(HAVE_GLOB) || !defined(GLOB_HAS_ALTDIRFUNC) || \
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!defined(GLOB_HAS_GL_MATCHC)
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)glob.c 8.3 (Berkeley) 10/13/93";
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static char rcsid[] = "$OpenBSD: glob.c,v 1.22 2003/06/25 21:16:47 deraadt Exp $";
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#endif /* LIBC_SCCS and not lint */
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* glob(3) -- a superset of the one defined in POSIX 1003.2.
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* The [!...] convention to negate a range is supported (SysV, Posix, ksh).
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* Optional extra services, controlled by flags not defined by POSIX:
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* Escaping convention: \ inhibits any special meaning the following
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* character might have (except \ at end of string is retained).
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* Set in gl_flags if pattern contained a globbing character.
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* Same as GLOB_NOCHECK, but it will only append pattern if it did
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* not contain any magic characters. [Used in csh style globbing]
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* Use alternately specified directory access functions.
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* expand ~user/foo to the /home/dir/of/user/foo
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* expand {1,2}{a,b} to 1a 1b 2a 2b
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* Number of matches in the current invocation of glob.
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#undef TILDE /* Some platforms may already define it */
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#define UNDERSCORE '_'
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#define M_QUOTE 0x8000
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#define M_PROTECT 0x4000
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#define M_MASK 0xffff
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#define M_ASCII 0x00ff
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typedef u_short Char;
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#define M_PROTECT 0x40
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#define CHAR(c) ((Char)((c)&M_ASCII))
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#define META(c) ((Char)((c)|M_QUOTE))
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#define M_ALL META('*')
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#define M_END META(']')
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#define M_NOT META('!')
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#define M_ONE META('?')
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#define M_RNG META('-')
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#define M_SET META('[')
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#define ismeta(c) (((c)&M_QUOTE) != 0)
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static int compare(const void *, const void *);
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static int g_Ctoc(const Char *, char *, u_int);
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static int g_lstat(Char *, struct stat *, glob_t *);
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static DIR *g_opendir(Char *, glob_t *);
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static Char *g_strchr(Char *, int);
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static int g_stat(Char *, struct stat *, glob_t *);
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static int glob0(const Char *, glob_t *);
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static int glob1(Char *, Char *, glob_t *, size_t *);
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static int glob2(Char *, Char *, Char *, Char *, Char *, Char *,
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static int glob3(Char *, Char *, Char *, Char *, Char *, Char *,
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Char *, Char *, glob_t *, size_t *);
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static int globextend(const Char *, glob_t *, size_t *);
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globtilde(const Char *, Char *, size_t, glob_t *);
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static int globexp1(const Char *, glob_t *);
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static int globexp2(const Char *, const Char *, glob_t *, int *);
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static int match(Char *, Char *, Char *);
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static void qprintf(const char *, Char *);
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glob(pattern, flags, errfunc, pglob)
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int flags, (*errfunc)(const char *, int);
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const u_char *patnext;
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Char *bufnext, *bufend, patbuf[MAXPATHLEN];
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patnext = (u_char *) pattern;
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if (!(flags & GLOB_APPEND)) {
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pglob->gl_pathv = NULL;
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if (!(flags & GLOB_DOOFFS))
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pglob->gl_flags = flags & ~GLOB_MAGCHAR;
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pglob->gl_errfunc = errfunc;
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pglob->gl_matchc = 0;
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bufend = bufnext + MAXPATHLEN - 1;
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if (flags & GLOB_NOESCAPE)
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while (bufnext < bufend && (c = *patnext++) != EOS)
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/* Protect the quoted characters. */
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while (bufnext < bufend && (c = *patnext++) != EOS)
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if ((c = *patnext++) == EOS) {
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*bufnext++ = c | M_PROTECT;
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if (flags & GLOB_BRACE)
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return globexp1(patbuf, pglob);
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return glob0(patbuf, pglob);
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* Expand recursively a glob {} pattern. When there is no more expansion
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* invoke the standard globbing routine to glob the rest of the magic
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globexp1(pattern, pglob)
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const Char* ptr = pattern;
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/* Protect a single {}, for find(1), like csh */
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if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS)
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return glob0(pattern, pglob);
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while ((ptr = (const Char *) g_strchr((Char *) ptr, LBRACE)) != NULL)
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if (!globexp2(ptr, pattern, pglob, &rv))
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return glob0(pattern, pglob);
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* Recursive brace globbing helper. Tries to expand a single brace.
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* If it succeeds then it invokes globexp1 with the new pattern.
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* If it fails then it tries to glob the rest of the pattern and returns.
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globexp2(ptr, pattern, pglob, rv)
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const Char *ptr, *pattern;
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const Char *pe, *pm, *pl;
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Char patbuf[MAXPATHLEN];
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/* copy part up to the brace */
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for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++)
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/* Find the balanced brace */
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for (i = 0, pe = ++ptr; *pe; pe++)
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if (*pe == LBRACKET) {
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/* Ignore everything between [] */
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for (pm = pe++; *pe != RBRACKET && *pe != EOS; pe++)
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* We could not find a matching RBRACKET.
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* Ignore and just look for RBRACE
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} else if (*pe == LBRACE)
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else if (*pe == RBRACE) {
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/* Non matching braces; just glob the pattern */
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if (i != 0 || *pe == EOS) {
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*rv = glob0(patbuf, pglob);
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for (i = 0, pl = pm = ptr; pm <= pe; pm++) {
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/* Ignore everything between [] */
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for (pl = pm++; *pm != RBRACKET && *pm != EOS; pm++)
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* We could not find a matching RBRACKET.
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* Ignore and just look for RBRACE
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if (i && *pm == COMMA)
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/* Append the current string */
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for (lm = ls; (pl < pm); *lm++ = *pl++)
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* Append the rest of the pattern after the
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for (pl = pe + 1; (*lm++ = *pl++) != EOS; )
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/* Expand the current pattern */
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qprintf("globexp2:", patbuf);
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*rv = globexp1(patbuf, pglob);
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/* move after the comma, to the next string */
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* expand tilde from the passwd file.
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globtilde(pattern, patbuf, patbuf_len, pglob)
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if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE))
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/* Copy up to the end of the string or / */
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eb = &patbuf[patbuf_len - 1];
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for (p = pattern + 1, h = (char *) patbuf;
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h < (char *)eb && *p && *p != SLASH; *h++ = *p++)
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if (((char *) patbuf)[0] == EOS) {
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* handle a plain ~ or ~/ by expanding $HOME
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* first and then trying the password file
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if (issetugid() != 0 || (h = getenv("HOME")) == NULL) {
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if ((getuid() != geteuid()) || (h = getenv("HOME")) == NULL) {
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if ((pwd = getpwuid(getuid())) == NULL)
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if ((pwd = getpwnam((char*) patbuf)) == NULL)
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/* Copy the home directory */
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for (b = patbuf; b < eb && *h; *b++ = *h++)
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/* Append the rest of the pattern */
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while (b < eb && (*b++ = *p++) != EOS)
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* The main glob() routine: compiles the pattern (optionally processing
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* quotes), calls glob1() to do the real pattern matching, and finally
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* sorts the list (unless unsorted operation is requested). Returns 0
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* if things went well, nonzero if errors occurred. It is not an error
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* to find no matches.
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glob0(pattern, pglob)
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const Char *qpatnext;
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int c, err, oldpathc;
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Char *bufnext, patbuf[MAXPATHLEN];
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qpatnext = globtilde(pattern, patbuf, MAXPATHLEN, pglob);
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oldpathc = pglob->gl_pathc;
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/* We don't need to check for buffer overflow any more. */
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while ((c = *qpatnext++) != EOS) {
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if (*qpatnext == EOS ||
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g_strchr((Char *) qpatnext+1, RBRACKET) == NULL) {
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*bufnext++ = LBRACKET;
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*bufnext++ = CHAR(c);
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if (*qpatnext == RANGE &&
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(c = qpatnext[1]) != RBRACKET) {
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*bufnext++ = CHAR(c);
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} while ((c = *qpatnext++) != RBRACKET);
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pglob->gl_flags |= GLOB_MAGCHAR;
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pglob->gl_flags |= GLOB_MAGCHAR;
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pglob->gl_flags |= GLOB_MAGCHAR;
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/* collapse adjacent stars to one,
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* to avoid exponential behavior
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if (bufnext == patbuf || bufnext[-1] != M_ALL)
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*bufnext++ = CHAR(c);
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qprintf("glob0:", patbuf);
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if ((err = glob1(patbuf, patbuf+MAXPATHLEN-1, pglob, &limit)) != 0)
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* If there was no match we are going to append the pattern
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* if GLOB_NOCHECK was specified or if GLOB_NOMAGIC was specified
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* and the pattern did not contain any magic characters
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* GLOB_NOMAGIC is there just for compatibility with csh.
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if (pglob->gl_pathc == oldpathc) {
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if ((pglob->gl_flags & GLOB_NOCHECK) ||
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((pglob->gl_flags & GLOB_NOMAGIC) &&
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!(pglob->gl_flags & GLOB_MAGCHAR)))
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return(globextend(pattern, pglob, &limit));
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return(GLOB_NOMATCH);
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if (!(pglob->gl_flags & GLOB_NOSORT))
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qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc,
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pglob->gl_pathc - oldpathc, sizeof(char *), compare);
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return(strcmp(*(char **)p, *(char **)q));
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glob1(pattern, pattern_last, pglob, limitp)
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Char *pattern, *pattern_last;
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Char pathbuf[MAXPATHLEN];
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/* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */
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return(glob2(pathbuf, pathbuf+MAXPATHLEN-1,
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pathbuf, pathbuf+MAXPATHLEN-1,
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pattern, pattern_last, pglob, limitp));
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* The functions glob2 and glob3 are mutually recursive; there is one level
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* of recursion for each segment in the pattern that contains one or more
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glob2(pathbuf, pathbuf_last, pathend, pathend_last, pattern,
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pattern_last, pglob, limitp)
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Char *pathbuf, *pathbuf_last, *pathend, *pathend_last;
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Char *pattern, *pattern_last;
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* Loop over pattern segments until end of pattern or until
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* segment with meta character found.
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for (anymeta = 0;;) {
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if (*pattern == EOS) { /* End of pattern? */
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if (g_lstat(pathbuf, &sb, pglob))
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if (((pglob->gl_flags & GLOB_MARK) &&
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pathend[-1] != SEP) && (S_ISDIR(sb.st_mode) ||
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(S_ISLNK(sb.st_mode) &&
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(g_stat(pathbuf, &sb, pglob) == 0) &&
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S_ISDIR(sb.st_mode)))) {
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if (pathend+1 > pathend_last)
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return(globextend(pathbuf, pglob, limitp));
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/* Find end of next segment, copy tentatively to pathend. */
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while (*p != EOS && *p != SEP) {
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if (q+1 > pathend_last)
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if (!anymeta) { /* No expansion, do next segment. */
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while (*pattern == SEP) {
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if (pathend+1 > pathend_last)
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*pathend++ = *pattern++;
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/* Need expansion, recurse. */
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return(glob3(pathbuf, pathbuf_last, pathend,
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pathend_last, pattern, pattern_last,
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p, pattern_last, pglob, limitp));
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glob3(pathbuf, pathbuf_last, pathend, pathend_last, pattern, pattern_last,
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restpattern, restpattern_last, pglob, limitp)
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Char *pathbuf, *pathbuf_last, *pathend, *pathend_last;
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Char *pattern, *pattern_last, *restpattern, *restpattern_last;
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register struct dirent *dp;
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char buf[MAXPATHLEN];
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* The readdirfunc declaration can't be prototyped, because it is
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* assigned, below, to two functions which are prototyped in glob.h
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* and dirent.h as taking pointers to differently typed opaque
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struct dirent *(*readdirfunc)(void *);
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if (pathend > pathend_last)
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if ((dirp = g_opendir(pathbuf, pglob)) == NULL) {
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/* TODO: don't call for ENOENT or ENOTDIR? */
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if (pglob->gl_errfunc) {
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if (g_Ctoc(pathbuf, buf, sizeof(buf)))
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return(GLOB_ABORTED);
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if (pglob->gl_errfunc(buf, errno) ||
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pglob->gl_flags & GLOB_ERR)
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return(GLOB_ABORTED);
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/* Search directory for matching names. */
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if (pglob->gl_flags & GLOB_ALTDIRFUNC)
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readdirfunc = pglob->gl_readdir;
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readdirfunc = (struct dirent *(*)(void *))readdir;
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while ((dp = (*readdirfunc)(dirp))) {
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/* Initial DOT must be matched literally. */
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if (dp->d_name[0] == DOT && *pattern != DOT)
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sc = (u_char *) dp->d_name;
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while (dc < pathend_last && (*dc++ = *sc++) != EOS)
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if (dc >= pathend_last) {
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if (!match(pathend, pattern, restpattern)) {
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err = glob2(pathbuf, pathbuf_last, --dc, pathend_last,
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restpattern, restpattern_last, pglob, limitp);
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if (pglob->gl_flags & GLOB_ALTDIRFUNC)
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(*pglob->gl_closedir)(dirp);
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* Extend the gl_pathv member of a glob_t structure to accommodate a new item,
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* add the new item, and update gl_pathc.
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* This assumes the BSD realloc, which only copies the block when its size
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* crosses a power-of-two boundary; for v7 realloc, this would cause quadratic
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* Return 0 if new item added, error code if memory couldn't be allocated.
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* Invariant of the glob_t structure:
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* Either gl_pathc is zero and gl_pathv is NULL; or gl_pathc > 0 and
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* gl_pathv points to (gl_offs + gl_pathc + 1) items.
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globextend(path, pglob, limitp)
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register char **pathv;
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newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs);
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pathv = pglob->gl_pathv ? realloc((char *)pglob->gl_pathv, newsize) :
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if (pglob->gl_pathv) {
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free(pglob->gl_pathv);
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pglob->gl_pathv = NULL;
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return(GLOB_NOSPACE);
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if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) {
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/* first time around -- clear initial gl_offs items */
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pathv += pglob->gl_offs;
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for (i = pglob->gl_offs; --i >= 0; )
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pglob->gl_pathv = pathv;
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for (p = path; *p++;)
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len = (size_t)(p - path);
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if ((copy = malloc(len)) != NULL) {
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if (g_Ctoc(path, copy, len)) {
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return(GLOB_NOSPACE);
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pathv[pglob->gl_offs + pglob->gl_pathc++] = copy;
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pathv[pglob->gl_offs + pglob->gl_pathc] = NULL;
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if ((pglob->gl_flags & GLOB_LIMIT) &&
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newsize + *limitp >= (u_int) get_arg_max()) {
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return(GLOB_NOSPACE);
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return(copy == NULL ? GLOB_NOSPACE : 0);
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* pattern matching function for filenames. Each occurrence of the *
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* pattern causes a recursion level.
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match(name, pat, patend)
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register Char *name, *pat, *patend;
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int ok, negate_range;
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while (pat < patend) {
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switch (c & M_MASK) {
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if (match(name, pat, patend))
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while (*name++ != EOS)
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if ((k = *name++) == EOS)
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if ((negate_range = ((*pat & M_MASK) == M_NOT)) != EOS)
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while (((c = *pat++) & M_MASK) != M_END)
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if ((*pat & M_MASK) == M_RNG) {
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if (c <= k && k <= pat[1])
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if (ok == negate_range)
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return(*name == EOS);
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/* Free allocated data belonging to a glob_t structure. */
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if (pglob->gl_pathv != NULL) {
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pp = pglob->gl_pathv + pglob->gl_offs;
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for (i = pglob->gl_pathc; i--; ++pp)
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free(pglob->gl_pathv);
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pglob->gl_pathv = NULL;
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g_opendir(str, pglob)
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char buf[MAXPATHLEN];
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strlcpy(buf, ".", sizeof buf);
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if (g_Ctoc(str, buf, sizeof(buf)))
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if (pglob->gl_flags & GLOB_ALTDIRFUNC)
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return((*pglob->gl_opendir)(buf));
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return(opendir(buf));
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g_lstat(fn, sb, pglob)
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char buf[MAXPATHLEN];
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if (g_Ctoc(fn, buf, sizeof(buf)))
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if (pglob->gl_flags & GLOB_ALTDIRFUNC)
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return((*pglob->gl_lstat)(buf, sb));
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return(lstat(buf, sb));
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g_stat(fn, sb, pglob)
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char buf[MAXPATHLEN];
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if (g_Ctoc(fn, buf, sizeof(buf)))
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if (pglob->gl_flags & GLOB_ALTDIRFUNC)
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return((*pglob->gl_stat)(buf, sb));
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return(stat(buf, sb));
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g_Ctoc(str, buf, len)
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register const Char *str;
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if ((*buf++ = *str++) == EOS)
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(void)printf("%s:\n", str);
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(void)printf("%c", CHAR(*p));
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(void)printf("%c", *p & M_PROTECT ? '"' : ' ');
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(void)printf("%c", ismeta(*p) ? '_' : ' ');
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#endif /* !defined(HAVE_GLOB) || !defined(GLOB_HAS_ALTDIRFUNC) ||
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!defined(GLOB_HAS_GL_MATCHC) */
added
removed
openbsd-compat/glob.c
