--- /dev/null
+/* $NetBSD: glob.c,v 1.35 2013/03/20 23:44:47 lukem Exp $ */
+
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Guido van Rossum.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 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. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+#if defined(LIBC_SCCS) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)glob.c 8.3 (Berkeley) 10/13/93";
+#else
+__RCSID("$NetBSD: glob.c,v 1.35 2013/03/20 23:44:47 lukem Exp $");
+#endif
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * glob(3) -- a superset of the one defined in POSIX 1003.2.
+ *
+ * The [!...] convention to negate a range is supported (SysV, Posix, ksh).
+ *
+ * Optional extra services, controlled by flags not defined by POSIX:
+ *
+ * GLOB_MAGCHAR:
+ * Set in gl_flags if pattern contained a globbing character.
+ * GLOB_NOMAGIC:
+ * Same as GLOB_NOCHECK, but it will only append pattern if it did
+ * not contain any magic characters. [Used in csh style globbing]
+ * GLOB_ALTDIRFUNC:
+ * Use alternately specified directory access functions.
+ * GLOB_TILDE:
+ * expand ~user/foo to the /home/dir/of/user/foo
+ * GLOB_BRACE:
+ * expand {1,2}{a,b} to 1a 1b 2a 2b
+ * GLOB_PERIOD:
+ * allow metacharacters to match leading dots in filenames.
+ * GLOB_NO_DOTDIRS:
+ * . and .. are hidden from wildcards, even if GLOB_PERIOD is set.
+ * gl_matchc:
+ * Number of matches in the current invocation of glob.
+ */
+
+//#include "namespace.h"
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <assert.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <errno.h>
+#include <glob.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#ifdef HAVE_NBTOOL_CONFIG_H
+#define NO_GETPW_R
+#endif
+
+#define GLOB_LIMIT_STRING 65536 /* number of readdirs */
+#define GLOB_LIMIT_STAT 128 /* number of stat system calls */
+#define GLOB_LIMIT_READDIR 16384 /* total buffer size of path strings */
+#define GLOB_LIMIT_PATH 1024 /* number of path elements */
+#define GLOB_LIMIT_BRACE 128 /* Number of brace calls */
+
+struct glob_limit {
+ size_t l_string;
+ size_t l_stat;
+ size_t l_readdir;
+ size_t l_brace;
+};
+
+/*
+ * XXX: For NetBSD 1.4.x compatibility. (kill me l8r)
+ */
+#ifndef _DIAGASSERT
+#define _DIAGASSERT(a)
+#endif
+
+#define DOLLAR '$'
+#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 USE_8BIT_CHARS
+
+#define M_QUOTE 0x8000
+#define M_PROTECT 0x4000
+#define M_MASK 0xffff
+#define M_ASCII 0x00ff
+
+typedef unsigned short Char;
+
+#else
+
+#define M_QUOTE (Char)0x80
+#define M_PROTECT (Char)0x40
+#define M_MASK (Char)0xff
+#define M_ASCII (Char)0x7f
+
+typedef char Char;
+
+#endif
+
+
+#define CHAR(c) ((Char)((c)&M_ASCII))
+#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 ismeta(c) (((c)&M_QUOTE) != 0)
+
+
+static int compare(const void *, const void *);
+static int g_Ctoc(const Char *, char *, size_t);
+static int g_lstat(Char *, __gl_stat_t *, glob_t *);
+static DIR *g_opendir(Char *, glob_t *);
+static Char *g_strchr(const Char *, int);
+static int g_stat(Char *, __gl_stat_t *, glob_t *);
+static int glob0(const Char *, glob_t *, struct glob_limit *);
+static int glob1(Char *, glob_t *, struct glob_limit *);
+static int glob2(Char *, Char *, Char *, const Char *, glob_t *,
+ struct glob_limit *);
+static int glob3(Char *, Char *, Char *, const Char *, const Char *,
+ const Char *, glob_t *, struct glob_limit *);
+static int globextend(const Char *, glob_t *, struct glob_limit *);
+static const Char *globtilde(const Char *, Char *, size_t, glob_t *);
+static int globexp1(const Char *, glob_t *, struct glob_limit *);
+static int globexp2(const Char *, const Char *, glob_t *, int *,
+ struct glob_limit *);
+static int match(const Char *, const Char *, const Char *);
+#ifdef DEBUG
+static void qprintf(const char *, Char *);
+#endif
+
+int
+glob(const char * __restrict pattern, int flags, int (*errfunc)(const char *,
+ int), glob_t * __restrict pglob)
+{
+ const unsigned char *patnext;
+ int c;
+ Char *bufnext, *bufend, patbuf[MAXPATHLEN+1];
+ struct glob_limit limit = { 0, 0, 0, 0 };
+
+ _DIAGASSERT(pattern != NULL);
+
+ patnext = (const unsigned char *) pattern;
+ if (!(flags & GLOB_APPEND)) {
+ pglob->gl_pathc = 0;
+ pglob->gl_pathv = NULL;
+ if (!(flags & GLOB_DOOFFS))
+ pglob->gl_offs = 0;
+ }
+ pglob->gl_flags = flags & ~GLOB_MAGCHAR;
+ pglob->gl_errfunc = errfunc;
+ pglob->gl_matchc = 0;
+
+ bufnext = patbuf;
+ bufend = bufnext + MAXPATHLEN;
+ if (flags & GLOB_NOESCAPE) {
+ while (bufnext < bufend && (c = *patnext++) != EOS)
+ *bufnext++ = c;
+ } else {
+ /* Protect the quoted characters. */
+ while (bufnext < bufend && (c = *patnext++) != EOS)
+ if (c == QUOTE) {
+ if ((c = *patnext++) == EOS) {
+ c = QUOTE;
+ --patnext;
+ }
+ *bufnext++ = c | M_PROTECT;
+ }
+ else
+ *bufnext++ = c;
+ }
+ *bufnext = EOS;
+
+ if (flags & GLOB_BRACE)
+ return globexp1(patbuf, pglob, &limit);
+ else
+ return glob0(patbuf, pglob, &limit);
+}
+
+/*
+ * Expand recursively a glob {} pattern. When there is no more expansion
+ * invoke the standard globbing routine to glob the rest of the magic
+ * characters
+ */
+static int
+globexp1(const Char *pattern, glob_t *pglob, struct glob_limit *limit)
+{
+ const Char* ptr = pattern;
+ int rv;
+
+ _DIAGASSERT(pattern != NULL);
+ _DIAGASSERT(pglob != NULL);
+
+ if ((pglob->gl_flags & GLOB_LIMIT) &&
+ limit->l_brace++ >= GLOB_LIMIT_BRACE) {
+ errno = 0;
+ return GLOB_NOSPACE;
+ }
+
+ /* 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(ptr, LBRACE)) != NULL)
+ if (!globexp2(ptr, pattern, pglob, &rv, limit))
+ return rv;
+
+ return glob0(pattern, pglob, limit);
+}
+
+
+/*
+ * Recursive brace globbing helper. Tries to expand a single brace.
+ * 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(const Char *ptr, const Char *pattern, glob_t *pglob, int *rv,
+ struct glob_limit *limit)
+{
+ int i;
+ Char *lm, *ls;
+ const Char *pe, *pm, *pl;
+ Char patbuf[MAXPATHLEN + 1];
+
+ _DIAGASSERT(ptr != NULL);
+ _DIAGASSERT(pattern != NULL);
+ _DIAGASSERT(pglob != NULL);
+ _DIAGASSERT(rv != NULL);
+
+ /* copy part up to the brace */
+ for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++)
+ continue;
+ ls = lm;
+
+ /* Find the balanced brace */
+ for (i = 0, pe = ++ptr; *pe; pe++)
+ 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.
+ * Ignore and just look for RBRACE
+ */
+ pe = pm;
+ }
+ }
+ else if (*pe == LBRACE)
+ i++;
+ else if (*pe == RBRACE) {
+ if (i == 0)
+ break;
+ i--;
+ }
+
+ /* Non matching braces; just glob the pattern */
+ if (i != 0 || *pe == EOS) {
+ /*
+ * we use `pattern', not `patbuf' here so that that
+ * unbalanced braces are passed to the match
+ */
+ *rv = glob0(pattern, pglob, limit);
+ return 0;
+ }
+
+ 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.
+ * Ignore and just look for RBRACE
+ */
+ pm = pl;
+ }
+ break;
+
+ case LBRACE:
+ i++;
+ break;
+
+ case RBRACE:
+ if (i) {
+ i--;
+ break;
+ }
+ /* FALLTHROUGH */
+ case COMMA:
+ if (i && *pm == COMMA)
+ break;
+ 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;
+
+ /* Expand the current pattern */
+#ifdef DEBUG
+ qprintf("globexp2", patbuf);
+#endif
+ *rv = globexp1(patbuf, pglob, limit);
+
+ /* move after the comma, to the next string */
+ pl = pm + 1;
+ }
+ break;
+
+ default:
+ break;
+ }
+ }
+ *rv = 0;
+ return 0;
+}
+
+
+
+/*
+ * expand tilde from the passwd file.
+ */
+static const Char *
+globtilde(const Char *pattern, Char *patbuf, size_t patsize, glob_t *pglob)
+{
+ struct passwd *pwd;
+ const char *h;
+ const Char *p;
+ Char *b;
+ char *d;
+ Char *pend = &patbuf[patsize / sizeof(Char)];
+#ifndef NO_GETPW_R
+ struct passwd pwres;
+ char pwbuf[1024];
+#endif
+
+ pend--;
+
+ _DIAGASSERT(pattern != NULL);
+ _DIAGASSERT(patbuf != NULL);
+ _DIAGASSERT(pglob != NULL);
+
+ if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE))
+ return pattern;
+
+ /* Copy up to the end of the string or / */
+ for (p = pattern + 1, d = (char *)(void *)patbuf;
+ d < (char *)(void *)pend && *p && *p != SLASH;
+ *d++ = *p++)
+ continue;
+
+ if (d == (char *)(void *)pend)
+ return NULL;
+
+ *d = EOS;
+ d = (char *)(void *)patbuf;
+
+ if (*d == EOS) {
+ /*
+ * handle a plain ~ or ~/ by expanding $HOME
+ * first and then trying the password file
+ */
+ if ((h = getenv("HOME")) == NULL) {
+#ifdef NO_GETPW_R
+ if ((pwd = getpwuid(getuid())) == NULL)
+#else
+ if (getpwuid_r(getuid(), &pwres, pwbuf, sizeof(pwbuf),
+ &pwd) != 0 || pwd == NULL)
+#endif
+ return pattern;
+ else
+ h = pwd->pw_dir;
+ }
+ }
+ else {
+ /*
+ * Expand a ~user
+ */
+#ifdef NO_GETPW_R
+ if ((pwd = getpwnam(d)) == NULL)
+#else
+ if (getpwnam_r(d, &pwres, pwbuf, sizeof(pwbuf), &pwd) != 0 ||
+ pwd == NULL)
+#endif
+ return pattern;
+ else
+ h = pwd->pw_dir;
+ }
+
+ /* Copy the home directory */
+ for (b = patbuf; b < pend && *h; *b++ = *h++)
+ continue;
+
+ if (b == pend)
+ return NULL;
+
+ /* Append the rest of the pattern */
+ while (b < pend && (*b++ = *p++) != EOS)
+ continue;
+
+ if (b == pend)
+ return NULL;
+
+ return patbuf;
+}
+
+
+/*
+ * The main glob() routine: compiles the pattern (optionally processing
+ * quotes), calls glob1() to do the real pattern matching, and finally
+ * sorts the list (unless unsorted operation is requested). Returns 0
+ * if things went well, nonzero if errors occurred. It is not an error
+ * to find no matches.
+ */
+static int
+glob0(const Char *pattern, glob_t *pglob, struct glob_limit *limit)
+{
+ const Char *qpatnext;
+ int c, error;
+ __gl_size_t oldpathc;
+ Char *bufnext, patbuf[MAXPATHLEN+1];
+
+ _DIAGASSERT(pattern != NULL);
+ _DIAGASSERT(pglob != NULL);
+
+ if ((qpatnext = globtilde(pattern, patbuf, sizeof(patbuf),
+ pglob)) == NULL)
+ return GLOB_ABEND;
+ oldpathc = pglob->gl_pathc;
+ bufnext = patbuf;
+
+ /* We don't need to check for buffer overflow any more. */
+ while ((c = *qpatnext++) != EOS) {
+ switch (c) {
+ case LBRACKET:
+ c = *qpatnext;
+ if (c == NOT)
+ ++qpatnext;
+ if (*qpatnext == EOS ||
+ g_strchr(qpatnext+1, RBRACKET) == NULL) {
+ *bufnext++ = LBRACKET;
+ if (c == NOT)
+ --qpatnext;
+ break;
+ }
+ *bufnext++ = M_SET;
+ if (c == NOT)
+ *bufnext++ = M_NOT;
+ c = *qpatnext++;
+ do {
+ *bufnext++ = CHAR(c);
+ if (*qpatnext == RANGE &&
+ (c = qpatnext[1]) != RBRACKET) {
+ *bufnext++ = M_RNG;
+ *bufnext++ = CHAR(c);
+ qpatnext += 2;
+ }
+ } while ((c = *qpatnext++) != RBRACKET);
+ pglob->gl_flags |= GLOB_MAGCHAR;
+ *bufnext++ = M_END;
+ break;
+ case QUESTION:
+ pglob->gl_flags |= GLOB_MAGCHAR;
+ *bufnext++ = M_ONE;
+ break;
+ case STAR:
+ pglob->gl_flags |= GLOB_MAGCHAR;
+ /* collapse adjacent stars to one [or three if globstar]
+ * to avoid exponential behavior
+ */
+ if (bufnext == patbuf || bufnext[-1] != M_ALL ||
+ ((pglob->gl_flags & GLOB_STAR) != 0 &&
+ (bufnext - 1 == patbuf || bufnext[-2] != M_ALL ||
+ bufnext - 2 == patbuf || bufnext[-3] != M_ALL)))
+ *bufnext++ = M_ALL;
+ break;
+ default:
+ *bufnext++ = CHAR(c);
+ break;
+ }
+ }
+ *bufnext = EOS;
+#ifdef DEBUG
+ qprintf("glob0", patbuf);
+#endif
+
+ if ((error = glob1(patbuf, pglob, limit)) != 0)
+ return error;
+
+ if (pglob->gl_pathc == oldpathc) {
+ /*
+ * 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_flags & GLOB_NOCHECK) ||
+ ((pglob->gl_flags & (GLOB_NOMAGIC|GLOB_MAGCHAR))
+ == GLOB_NOMAGIC)) {
+ return globextend(pattern, pglob, limit);
+ } else {
+ return GLOB_NOMATCH;
+ }
+ } else if (!(pglob->gl_flags & GLOB_NOSORT)) {
+ qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc,
+ (size_t)pglob->gl_pathc - oldpathc, sizeof(char *),
+ compare);
+ }
+
+ return 0;
+}
+
+static int
+compare(const void *p, const void *q)
+{
+
+ _DIAGASSERT(p != NULL);
+ _DIAGASSERT(q != NULL);
+
+ return strcoll(*(const char * const *)p, *(const char * const *)q);
+}
+
+static int
+glob1(Char *pattern, glob_t *pglob, struct glob_limit *limit)
+{
+ Char pathbuf[MAXPATHLEN+1];
+
+ _DIAGASSERT(pattern != NULL);
+ _DIAGASSERT(pglob != NULL);
+
+ /* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */
+ if (*pattern == EOS)
+ return 0;
+ /*
+ * we save one character so that we can use ptr >= limit,
+ * in the general case when we are appending non nul chars only.
+ */
+ return glob2(pathbuf, pathbuf,
+ pathbuf + (sizeof(pathbuf) / sizeof(*pathbuf)) - 1, pattern,
+ pglob, limit);
+}
+
+/*
+ * The functions glob2 and glob3 are mutually recursive; there is one level
+ * of recursion for each segment in the pattern that contains one or more
+ * meta characters.
+ */
+static int
+glob2(Char *pathbuf, Char *pathend, Char *pathlim, const Char *pattern,
+ glob_t *pglob, struct glob_limit *limit)
+{
+ __gl_stat_t sb;
+ const Char *p;
+ Char *q;
+ int anymeta;
+
+ _DIAGASSERT(pathbuf != NULL);
+ _DIAGASSERT(pathend != NULL);
+ _DIAGASSERT(pattern != NULL);
+ _DIAGASSERT(pglob != NULL);
+
+#ifdef DEBUG
+ qprintf("glob2", pathbuf);
+#endif
+ /*
+ * Loop over pattern segments until end of pattern or until
+ * segment with meta character found.
+ */
+ for (anymeta = 0;;) {
+ if (*pattern == EOS) { /* End of pattern? */
+ *pathend = EOS;
+ if (g_lstat(pathbuf, &sb, pglob))
+ return 0;
+
+ if ((pglob->gl_flags & GLOB_LIMIT) &&
+ limit->l_stat++ >= GLOB_LIMIT_STAT) {
+ errno = 0;
+ *pathend++ = SEP;
+ *pathend = EOS;
+ return GLOB_NOSPACE;
+ }
+ 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 >= pathlim)
+ return GLOB_ABORTED;
+ *pathend++ = SEP;
+ *pathend = EOS;
+ }
+ ++pglob->gl_matchc;
+ return globextend(pathbuf, pglob, limit);
+ }
+
+ /* Find end of next segment, copy tentatively to pathend. */
+ q = pathend;
+ p = pattern;
+ while (*p != EOS && *p != SEP) {
+ if (ismeta(*p))
+ anymeta = 1;
+ if (q >= pathlim)
+ return GLOB_ABORTED;
+ *q++ = *p++;
+ }
+
+ if (!anymeta) {
+ pathend = q;
+ pattern = p;
+ while (*pattern == SEP) {
+ if (pathend >= pathlim)
+ return GLOB_ABORTED;
+ *pathend++ = *pattern++;
+ }
+ } else /* Need expansion, recurse. */
+ return glob3(pathbuf, pathend, pathlim, pattern, p,
+ pattern, pglob, limit);
+ }
+ /* NOTREACHED */
+}
+
+static int
+glob3(Char *pathbuf, Char *pathend, Char *pathlim, const Char *pattern,
+ const Char *restpattern, const Char *pglobstar, glob_t *pglob,
+ struct glob_limit *limit)
+{
+ struct dirent *dp;
+ DIR *dirp;
+ __gl_stat_t sbuf;
+ int error;
+ char buf[MAXPATHLEN];
+ int globstar = 0;
+ int chase_symlinks = 0;
+ const Char *termstar = NULL;
+
+ /*
+ * The readdirfunc declaration can't be prototyped, because it is
+ * assigned, below, to two functions which are prototyped in glob.h
+ * and dirent.h as taking pointers to differently typed opaque
+ * structures.
+ */
+ struct dirent *(*readdirfunc)(void *);
+
+ _DIAGASSERT(pathbuf != NULL);
+ _DIAGASSERT(pathend != NULL);
+ _DIAGASSERT(pattern != NULL);
+ _DIAGASSERT(restpattern != NULL);
+ _DIAGASSERT(pglob != NULL);
+
+ *pathend = EOS;
+ errno = 0;
+
+ while (pglobstar < restpattern) {
+ if ((pglobstar[0] & M_MASK) == M_ALL &&
+ (pglobstar[1] & M_MASK) == M_ALL) {
+ globstar = 1;
+ chase_symlinks = (pglobstar[2] & M_MASK) == M_ALL;
+ termstar = pglobstar + (2 + chase_symlinks);
+ break;
+ }
+ pglobstar++;
+ }
+
+ if (globstar) {
+ error = pglobstar == pattern && termstar == restpattern ?
+ *restpattern == EOS ?
+ glob2(pathbuf, pathend, pathlim, restpattern - 1, pglob,
+ limit) :
+ glob2(pathbuf, pathend, pathlim, restpattern + 1, pglob,
+ limit) :
+ glob3(pathbuf, pathend, pathlim, pattern, restpattern,
+ termstar, pglob, limit);
+ if (error)
+ return error;
+ *pathend = EOS;
+ }
+
+ if (*pathbuf && (g_lstat(pathbuf, &sbuf, pglob) ||
+ !S_ISDIR(sbuf.st_mode)
+#ifdef S_IFLINK
+ && ((globstar && !chase_symlinks) || !S_ISLNK(sbuf.st_mode))
+#endif
+ ))
+ return 0;
+
+ if ((dirp = g_opendir(pathbuf, pglob)) == NULL) {
+ 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;
+ }
+ /*
+ * Posix/XOpen: glob should return when it encounters a
+ * directory that it cannot open or read
+ * XXX: Should we ignore ENOTDIR and ENOENT though?
+ * I think that Posix had in mind EPERM...
+ */
+ if (pglob->gl_flags & GLOB_ERR)
+ return GLOB_ABORTED;
+
+ return 0;
+ }
+
+ error = 0;
+
+ /* Search directory for matching names. */
+ if (pglob->gl_flags & GLOB_ALTDIRFUNC)
+ readdirfunc = pglob->gl_readdir;
+ else
+ readdirfunc = (struct dirent *(*)(void *)) readdir;
+ while ((dp = (*readdirfunc)(dirp)) != NULL) {
+ unsigned char *sc;
+ Char *dc;
+
+ if ((pglob->gl_flags & GLOB_LIMIT) &&
+ limit->l_readdir++ >= GLOB_LIMIT_READDIR) {
+ errno = 0;
+ *pathend++ = SEP;
+ *pathend = EOS;
+ error = GLOB_NOSPACE;
+ break;
+ }
+
+ /*
+ * Initial DOT must be matched literally, unless we have
+ * GLOB_PERIOD set.
+ */
+ if ((pglob->gl_flags & GLOB_PERIOD) == 0)
+ if (dp->d_name[0] == DOT && *pattern != DOT)
+ continue;
+ /*
+ * If GLOB_NO_DOTDIRS is set, . and .. vanish.
+ */
+ if ((pglob->gl_flags & GLOB_NO_DOTDIRS) &&
+ (dp->d_name[0] == DOT) &&
+ ((dp->d_name[1] == EOS) ||
+ ((dp->d_name[1] == DOT) && (dp->d_name[2] == EOS))))
+ continue;
+ /*
+ * The resulting string contains EOS, so we can
+ * use the pathlim character, if it is the nul
+ */
+ for (sc = (unsigned char *) dp->d_name, dc = pathend;
+ dc <= pathlim && (*dc++ = *sc++) != EOS;)
+ continue;
+
+ /*
+ * Have we filled the buffer without seeing EOS?
+ */
+ if (dc > pathlim && *pathlim != EOS) {
+ /*
+ * Abort when requested by caller, otherwise
+ * reset pathend back to last SEP and continue
+ * with next dir entry.
+ */
+ if (pglob->gl_flags & GLOB_ERR) {
+ error = GLOB_ABORTED;
+ break;
+ }
+ else {
+ *pathend = EOS;
+ continue;
+ }
+ }
+
+ if (globstar) {
+#ifdef S_IFLNK
+ if (!chase_symlinks &&
+ (g_lstat(pathbuf, &sbuf, pglob) ||
+ S_ISLNK(sbuf.st_mode)))
+ continue;
+#endif
+
+ if (!match(pathend, pattern, termstar))
+ continue;
+
+ if (--dc < pathlim - 2)
+ *dc++ = SEP;
+ *dc = EOS;
+ error = glob2(pathbuf, dc, pathlim, pglobstar,
+ pglob, limit);
+ if (error)
+ break;
+ *pathend = EOS;
+ } else {
+ if (!match(pathend, pattern, restpattern)) {
+ *pathend = EOS;
+ continue;
+ }
+ error = glob2(pathbuf, --dc, pathlim, restpattern,
+ pglob, limit);
+ if (error)
+ break;
+ }
+ }
+ if (pglob->gl_flags & GLOB_ALTDIRFUNC)
+ (*pglob->gl_closedir)(dirp);
+ else
+ closedir(dirp);
+
+ /*
+ * Again Posix X/Open issue with regards to error handling.
+ */
+ if ((error || errno) && (pglob->gl_flags & GLOB_ERR))
+ return GLOB_ABORTED;
+
+ return error;
+}
+
+
+/*
+ * 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
+ * crosses a power-of-two boundary; for v7 realloc, this would cause quadratic
+ * behavior.
+ *
+ * Return 0 if new item added, error code if memory couldn't be allocated.
+ *
+ * Invariant of the glob_t structure:
+ * 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(const Char *path, glob_t *pglob, struct glob_limit *limit)
+{
+ char **pathv;
+ size_t i, newsize, len;
+ char *copy;
+ const Char *p;
+
+ _DIAGASSERT(path != NULL);
+ _DIAGASSERT(pglob != NULL);
+
+ newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs);
+ if ((pglob->gl_flags & GLOB_LIMIT) &&
+ newsize > GLOB_LIMIT_PATH * sizeof(*pathv))
+ goto nospace;
+ pathv = pglob->gl_pathv ? realloc(pglob->gl_pathv, newsize) :
+ malloc(newsize);
+ 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 + 1; --i > 0; )
+ *--pathv = NULL;
+ }
+ pglob->gl_pathv = pathv;
+
+ for (p = path; *p++;)
+ continue;
+ len = (size_t)(p - path);
+ limit->l_string += len;
+ if ((copy = malloc(len)) != NULL) {
+ if (g_Ctoc(path, copy, len)) {
+ free(copy);
+ return GLOB_ABORTED;
+ }
+ pathv[pglob->gl_offs + pglob->gl_pathc++] = copy;
+ }
+ pathv[pglob->gl_offs + pglob->gl_pathc] = NULL;
+
+ if ((pglob->gl_flags & GLOB_LIMIT) &&
+ (newsize + limit->l_string) >= GLOB_LIMIT_STRING)
+ goto nospace;
+
+ return copy == NULL ? GLOB_NOSPACE : 0;
+nospace:
+ errno = 0;
+ return GLOB_NOSPACE;
+}
+
+
+/*
+ * pattern matching function for filenames. Each occurrence of the *
+ * pattern causes a recursion level.
+ */
+static int
+match(const Char *name, const Char *pat, const Char *patend)
+{
+ int ok, negate_range;
+ Char c, k;
+
+ _DIAGASSERT(name != NULL);
+ _DIAGASSERT(pat != NULL);
+ _DIAGASSERT(patend != NULL);
+
+ while (pat < patend) {
+ c = *pat++;
+ switch (c & M_MASK) {
+ case M_ALL:
+ while (pat < patend && (*pat & M_MASK) == M_ALL)
+ pat++; /* eat consecutive '*' */
+ if (pat == patend)
+ return 1;
+ for (; !match(name, pat, patend); name++)
+ if (*name == EOS)
+ return 0;
+ return 1;
+ 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 (c <= k && k <= pat[1])
+ ok = 1;
+ pat += 2;
+ } else if (c == k)
+ ok = 1;
+ if (ok == negate_range)
+ return 0;
+ break;
+ default:
+ if (*name++ != c)
+ return 0;
+ break;
+ }
+ }
+ return *name == EOS;
+}
+
+/* Free allocated data belonging to a glob_t structure. */
+void
+globfree(glob_t *pglob)
+{
+ size_t i;
+ char **pp;
+
+ _DIAGASSERT(pglob != NULL);
+
+ if (pglob->gl_pathv != NULL) {
+ pp = pglob->gl_pathv + pglob->gl_offs;
+ for (i = pglob->gl_pathc; i--; ++pp)
+ if (*pp)
+ free(*pp);
+ free(pglob->gl_pathv);
+ pglob->gl_pathv = NULL;
+ pglob->gl_pathc = 0;
+ }
+}
+
+#ifndef __LIBC12_SOURCE__
+int
+glob_pattern_p(const char *pattern, int quote)
+{
+ int range = 0;
+
+ for (; *pattern; pattern++)
+ switch (*pattern) {
+ case QUESTION:
+ case STAR:
+ return 1;
+
+ case QUOTE:
+ if (quote && pattern[1] != EOS)
+ ++pattern;
+ break;
+
+ case LBRACKET:
+ range = 1;
+ break;
+
+ case RBRACKET:
+ if (range)
+ return 1;
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+#endif
+
+static DIR *
+g_opendir(Char *str, glob_t *pglob)
+{
+ char buf[MAXPATHLEN];
+
+ _DIAGASSERT(str != NULL);
+ _DIAGASSERT(pglob != NULL);
+
+ if (!*str)
+ (void)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);
+
+ return opendir(buf);
+}
+
+static int
+g_lstat(Char *fn, __gl_stat_t *sb, glob_t *pglob)
+{
+ char buf[MAXPATHLEN];
+
+ _DIAGASSERT(fn != NULL);
+ _DIAGASSERT(sb != NULL);
+ _DIAGASSERT(pglob != NULL);
+
+ 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(Char *fn, __gl_stat_t *sb, glob_t *pglob)
+{
+ char buf[MAXPATHLEN];
+
+ _DIAGASSERT(fn != NULL);
+ _DIAGASSERT(sb != NULL);
+ _DIAGASSERT(pglob != NULL);
+
+ 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(const Char *str, int ch)
+{
+
+ _DIAGASSERT(str != NULL);
+
+ do {
+ if (*str == ch)
+ return __UNCONST(str);
+ } while (*str++);
+ return NULL;
+}
+
+static int
+g_Ctoc(const Char *str, char *buf, size_t len)
+{
+ char *dc;
+
+ _DIAGASSERT(str != NULL);
+ _DIAGASSERT(buf != NULL);
+
+ if (len == 0)
+ return 1;
+
+ for (dc = buf; len && (*dc++ = *str++) != EOS; len--)
+ continue;
+
+ return len == 0;
+}
+
+#ifdef DEBUG
+static void
+qprintf(const char *str, Char *s)
+{
+ Char *p;
+
+ _DIAGASSERT(str != NULL);
+ _DIAGASSERT(s != NULL);
+
+ (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");
+}
+#endif
projects / contrib / mraa.git / commitdiff