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-rw-r--r--openbsd-compat/glob.c1066
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diff --git a/openbsd-compat/glob.c b/openbsd-compat/glob.c
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+++ b/openbsd-compat/glob.c
@@ -0,0 +1,1066 @@
+/* $OpenBSD: glob.c,v 1.38 2011/09/22 06:27:29 djm 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.
+ */
+
+/* OPENBSD ORIGINAL: lib/libc/gen/glob.c */
+
+/*
+ * 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_QUOTE:
+ * Escaping convention: \ inhibits any special meaning the following
+ * character might have (except \ at end of string is retained).
+ * 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
+ * gl_matchc:
+ * Number of matches in the current invocation of glob.
+ */
+
+#include "includes.h"
+#include "glob.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <dirent.h>
+#include <ctype.h>
+#include <errno.h>
+#include <limits.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_STATV) || \
+ !defined(HAVE_DECL_GLOB_NOMATCH) || HAVE_DECL_GLOB_NOMATCH == 0 || \
+ defined(BROKEN_GLOB)
+
+#include "charclass.h"
+
+#define DOLLAR '$'
+#define DOT '.'
+#define EOS '\0'
+#define LBRACKET '['
+#define NOT '!'
+#define QUESTION '?'
+#define QUOTE '\\'
+#define RANGE '-'
+#define RBRACKET ']'
+#define SEP '/'
+#define STAR '*'
+#define TILDE '~'
+#define UNDERSCORE '_'
+#define LBRACE '{'
+#define RBRACE '}'
+#define SLASH '/'
+#define COMMA ','
+
+#ifndef DEBUG
+
+#define M_QUOTE 0x8000
+#define M_PROTECT 0x4000
+#define M_MASK 0xffff
+#define M_ASCII 0x00ff
+
+typedef u_short Char;
+
+#else
+
+#define M_QUOTE 0x80
+#define M_PROTECT 0x40
+#define M_MASK 0xff
+#define M_ASCII 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 M_CLASS META(':')
+#define ismeta(c) (((c)&M_QUOTE) != 0)
+
+#define GLOB_LIMIT_MALLOC 65536
+#define GLOB_LIMIT_STAT 128
+#define GLOB_LIMIT_READDIR 16384
+
+/* Limit of recursion during matching attempts. */
+#define GLOB_LIMIT_RECUR 64
+
+struct glob_lim {
+ size_t glim_malloc;
+ size_t glim_stat;
+ size_t glim_readdir;
+};
+
+struct glob_path_stat {
+ char *gps_path;
+ struct stat *gps_stat;
+};
+
+static int compare(const void *, const void *);
+static int compare_gps(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(const Char *, int);
+static int g_strncmp(const Char *, const char *, size_t);
+static int g_stat(Char *, struct stat *, glob_t *);
+static int glob0(const Char *, glob_t *, struct glob_lim *);
+static int glob1(Char *, Char *, glob_t *, struct glob_lim *);
+static int glob2(Char *, Char *, Char *, Char *, Char *, Char *,
+ glob_t *, struct glob_lim *);
+static int glob3(Char *, Char *, Char *, Char *, Char *,
+ Char *, Char *, glob_t *, struct glob_lim *);
+static int globextend(const Char *, glob_t *, struct glob_lim *,
+ struct stat *);
+static const Char *
+ globtilde(const Char *, Char *, size_t, glob_t *);
+static int globexp1(const Char *, glob_t *, struct glob_lim *);
+static int globexp2(const Char *, const Char *, glob_t *,
+ struct glob_lim *);
+static int match(Char *, Char *, Char *, int);
+#ifdef DEBUG
+static void qprintf(const char *, Char *);
+#endif
+
+int
+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];
+ struct glob_lim limit = { 0, 0, 0 };
+
+ if (strnlen(pattern, PATH_MAX) == PATH_MAX)
+ return(GLOB_NOMATCH);
+
+ patnext = (u_char *) pattern;
+ if (!(flags & GLOB_APPEND)) {
+ pglob->gl_pathc = 0;
+ pglob->gl_pathv = NULL;
+ pglob->gl_statv = NULL;
+ if (!(flags & GLOB_DOOFFS))
+ pglob->gl_offs = 0;
+ }
+ pglob->gl_flags = flags & ~GLOB_MAGCHAR;
+ pglob->gl_errfunc = errfunc;
+ pglob->gl_matchc = 0;
+
+ if (pglob->gl_offs < 0 || pglob->gl_pathc < 0 ||
+ pglob->gl_offs >= INT_MAX || pglob->gl_pathc >= INT_MAX ||
+ pglob->gl_pathc >= INT_MAX - pglob->gl_offs - 1)
+ return GLOB_NOSPACE;
+
+ bufnext = patbuf;
+ bufend = bufnext + MAXPATHLEN - 1;
+ 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_lim *limitp)
+{
+ const Char* ptr = pattern;
+
+ /* Protect a single {}, for find(1), like csh */
+ if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS)
+ return glob0(pattern, pglob, limitp);
+
+ if ((ptr = (const Char *) g_strchr(ptr, LBRACE)) != NULL)
+ return globexp2(ptr, pattern, pglob, limitp);
+
+ return glob0(pattern, pglob, limitp);
+}
+
+
+/*
+ * 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,
+ struct glob_lim *limitp)
+{
+ int i, rv;
+ Char *lm, *ls;
+ const Char *pe, *pm, *pl;
+ Char patbuf[MAXPATHLEN];
+
+ /* copy part up to the brace */
+ for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++)
+ ;
+ *lm = EOS;
+ 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++)
+ ;
+ 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)
+ return glob0(patbuf, pglob, limitp);
+
+ for (i = 0, pl = pm = ptr; pm <= pe; pm++) {
+ switch (*pm) {
+ case LBRACKET:
+ /* Ignore everything between [] */
+ for (pl = pm++; *pm != RBRACKET && *pm != EOS; pm++)
+ ;
+ 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++)
+ ;
+
+ /*
+ * Append the rest of the pattern after the
+ * closing brace
+ */
+ for (pl = pe + 1; (*lm++ = *pl++) != EOS; )
+ ;
+
+ /* Expand the current pattern */
+#ifdef DEBUG
+ qprintf("globexp2:", patbuf);
+#endif
+ rv = globexp1(patbuf, pglob, limitp);
+ if (rv && rv != GLOB_NOMATCH)
+ return rv;
+
+ /* move after the comma, to the next string */
+ pl = pm + 1;
+ }
+ break;
+
+ default:
+ break;
+ }
+ }
+ return 0;
+}
+
+
+
+/*
+ * expand tilde from the passwd file.
+ */
+static const Char *
+globtilde(const Char *pattern, Char *patbuf, size_t patbuf_len, glob_t *pglob)
+{
+ struct passwd *pwd;
+ char *h;
+ const Char *p;
+ Char *b, *eb;
+
+ if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE))
+ return pattern;
+
+ /* Copy up to the end of the string or / */
+ eb = &patbuf[patbuf_len - 1];
+ for (p = pattern + 1, h = (char *) patbuf;
+ h < (char *)eb && *p && *p != SLASH; *h++ = *p++)
+ ;
+
+ *h = EOS;
+
+#if 0
+ if (h == (char *)eb)
+ return what;
+#endif
+
+ if (((char *) patbuf)[0] == EOS) {
+ /*
+ * handle a plain ~ or ~/ by expanding $HOME
+ * first and then trying the password file
+ */
+#if 0
+ if (issetugid() != 0 || (h = getenv("HOME")) == NULL) {
+#endif
+ if ((getuid() != geteuid()) || (h = getenv("HOME")) == NULL) {
+ if ((pwd = getpwuid(getuid())) == NULL)
+ return pattern;
+ else
+ h = pwd->pw_dir;
+ }
+ } else {
+ /*
+ * Expand a ~user
+ */
+ if ((pwd = getpwnam((char*) patbuf)) == NULL)
+ return pattern;
+ else
+ h = pwd->pw_dir;
+ }
+
+ /* Copy the home directory */
+ for (b = patbuf; b < eb && *h; *b++ = *h++)
+ ;
+
+ /* Append the rest of the pattern */
+ while (b < eb && (*b++ = *p++) != EOS)
+ ;
+ *b = EOS;
+
+ return patbuf;
+}
+
+static int
+g_strncmp(const Char *s1, const char *s2, size_t n)
+{
+ int rv = 0;
+
+ while (n--) {
+ rv = *(Char *)s1 - *(const unsigned char *)s2++;
+ if (rv)
+ break;
+ if (*s1++ == '\0')
+ break;
+ }
+ return rv;
+}
+
+static int
+g_charclass(const Char **patternp, Char **bufnextp)
+{
+ const Char *pattern = *patternp + 1;
+ Char *bufnext = *bufnextp;
+ const Char *colon;
+ struct cclass *cc;
+ size_t len;
+
+ if ((colon = g_strchr(pattern, ':')) == NULL || colon[1] != ']')
+ return 1; /* not a character class */
+
+ len = (size_t)(colon - pattern);
+ for (cc = cclasses; cc->name != NULL; cc++) {
+ if (!g_strncmp(pattern, cc->name, len) && cc->name[len] == '\0')
+ break;
+ }
+ if (cc->name == NULL)
+ return -1; /* invalid character class */
+ *bufnext++ = M_CLASS;
+ *bufnext++ = (Char)(cc - &cclasses[0]);
+ *bufnextp = bufnext;
+ *patternp += len + 3;
+
+ return 0;
+}
+
+/*
+ * 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_lim *limitp)
+{
+ const Char *qpatnext;
+ int c, err, oldpathc;
+ Char *bufnext, patbuf[MAXPATHLEN];
+
+ qpatnext = globtilde(pattern, patbuf, MAXPATHLEN, pglob);
+ 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 {
+ if (c == LBRACKET && *qpatnext == ':') {
+ do {
+ err = g_charclass(&qpatnext,
+ &bufnext);
+ if (err)
+ break;
+ c = *qpatnext++;
+ } while (c == LBRACKET && *qpatnext == ':');
+ if (err == -1 &&
+ !(pglob->gl_flags & GLOB_NOCHECK))
+ return GLOB_NOMATCH;
+ if (c == RBRACKET)
+ break;
+ }
+ *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,
+ * to avoid exponential behavior
+ */
+ if (bufnext == patbuf || bufnext[-1] != M_ALL)
+ *bufnext++ = M_ALL;
+ break;
+ default:
+ *bufnext++ = CHAR(c);
+ break;
+ }
+ }
+ *bufnext = EOS;
+#ifdef DEBUG
+ qprintf("glob0:", patbuf);
+#endif
+
+ if ((err = glob1(patbuf, patbuf+MAXPATHLEN-1, pglob, limitp)) != 0)
+ return(err);
+
+ /*
+ * If there was no match we are going to append the pattern
+ * if GLOB_NOCHECK was specified or if GLOB_NOMAGIC was specified
+ * and the pattern did not contain any magic characters
+ * GLOB_NOMAGIC is there just for compatibility with csh.
+ */
+ if (pglob->gl_pathc == oldpathc) {
+ if ((pglob->gl_flags & GLOB_NOCHECK) ||
+ ((pglob->gl_flags & GLOB_NOMAGIC) &&
+ !(pglob->gl_flags & GLOB_MAGCHAR)))
+ return(globextend(pattern, pglob, limitp, NULL));
+ else
+ return(GLOB_NOMATCH);
+ }
+ if (!(pglob->gl_flags & GLOB_NOSORT)) {
+ if ((pglob->gl_flags & GLOB_KEEPSTAT)) {
+ /* Keep the paths and stat info synced during sort */
+ struct glob_path_stat *path_stat;
+ int i;
+ int n = pglob->gl_pathc - oldpathc;
+ int o = pglob->gl_offs + oldpathc;
+
+ if ((path_stat = calloc(n, sizeof(*path_stat))) == NULL)
+ return GLOB_NOSPACE;
+ for (i = 0; i < n; i++) {
+ path_stat[i].gps_path = pglob->gl_pathv[o + i];
+ path_stat[i].gps_stat = pglob->gl_statv[o + i];
+ }
+ qsort(path_stat, n, sizeof(*path_stat), compare_gps);
+ for (i = 0; i < n; i++) {
+ pglob->gl_pathv[o + i] = path_stat[i].gps_path;
+ pglob->gl_statv[o + i] = path_stat[i].gps_stat;
+ }
+ free(path_stat);
+ } else {
+ qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc,
+ pglob->gl_pathc - oldpathc, sizeof(char *),
+ compare);
+ }
+ }
+ return(0);
+}
+
+static int
+compare(const void *p, const void *q)
+{
+ return(strcmp(*(char **)p, *(char **)q));
+}
+
+static int
+compare_gps(const void *_p, const void *_q)
+{
+ const struct glob_path_stat *p = (const struct glob_path_stat *)_p;
+ const struct glob_path_stat *q = (const struct glob_path_stat *)_q;
+
+ return(strcmp(p->gps_path, q->gps_path));
+}
+
+static int
+glob1(Char *pattern, Char *pattern_last, glob_t *pglob, struct glob_lim *limitp)
+{
+ Char pathbuf[MAXPATHLEN];
+
+ /* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */
+ if (*pattern == EOS)
+ return(0);
+ return(glob2(pathbuf, pathbuf+MAXPATHLEN-1,
+ pathbuf, pathbuf+MAXPATHLEN-1,
+ pattern, pattern_last, pglob, limitp));
+}
+
+/*
+ * 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 *pathbuf_last, Char *pathend, Char *pathend_last,
+ Char *pattern, Char *pattern_last, glob_t *pglob, struct glob_lim *limitp)
+{
+ struct stat sb;
+ Char *p, *q;
+ int anymeta;
+
+ /*
+ * 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) &&
+ limitp->glim_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+1 > pathend_last)
+ return (1);
+ *pathend++ = SEP;
+ *pathend = EOS;
+ }
+ ++pglob->gl_matchc;
+ return(globextend(pathbuf, pglob, limitp, &sb));
+ }
+
+ /* 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+1 > pathend_last)
+ return (1);
+ *q++ = *p++;
+ }
+
+ if (!anymeta) { /* No expansion, do next segment. */
+ pathend = q;
+ pattern = p;
+ while (*pattern == SEP) {
+ if (pathend+1 > pathend_last)
+ return (1);
+ *pathend++ = *pattern++;
+ }
+ } else
+ /* Need expansion, recurse. */
+ return(glob3(pathbuf, pathbuf_last, pathend,
+ pathend_last, pattern, p, pattern_last,
+ pglob, limitp));
+ }
+ /* NOTREACHED */
+}
+
+static int
+glob3(Char *pathbuf, Char *pathbuf_last, Char *pathend, Char *pathend_last,
+ Char *pattern, Char *restpattern, Char *restpattern_last, glob_t *pglob,
+ struct glob_lim *limitp)
+{
+ struct dirent *dp;
+ DIR *dirp;
+ int err;
+ char buf[MAXPATHLEN];
+
+ /*
+ * 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 *);
+
+ 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) {
+ if (g_Ctoc(pathbuf, buf, sizeof(buf)))
+ return(GLOB_ABORTED);
+ if (pglob->gl_errfunc(buf, errno) ||
+ pglob->gl_flags & GLOB_ERR)
+ return(GLOB_ABORTED);
+ }
+ return(0);
+ }
+
+ err = 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))) {
+ u_char *sc;
+ Char *dc;
+
+ if ((pglob->gl_flags & GLOB_LIMIT) &&
+ limitp->glim_readdir++ >= GLOB_LIMIT_READDIR) {
+ errno = 0;
+ *pathend++ = SEP;
+ *pathend = EOS;
+ err = GLOB_NOSPACE;
+ break;
+ }
+
+ /* Initial DOT must be matched literally. */
+ if (dp->d_name[0] == DOT && *pattern != DOT)
+ 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, GLOB_LIMIT_RECUR)) {
+ *pathend = EOS;
+ continue;
+ }
+ err = glob2(pathbuf, pathbuf_last, --dc, pathend_last,
+ restpattern, restpattern_last, pglob, limitp);
+ if (err)
+ break;
+ }
+
+ if (pglob->gl_flags & GLOB_ALTDIRFUNC)
+ (*pglob->gl_closedir)(dirp);
+ else
+ closedir(dirp);
+ return(err);
+}
+
+
+/*
+ * 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_lim *limitp,
+ struct stat *sb)
+{
+ char **pathv;
+ ssize_t i;
+ size_t newn, len;
+ char *copy = NULL;
+ const Char *p;
+ struct stat **statv;
+
+ newn = 2 + pglob->gl_pathc + pglob->gl_offs;
+ if (pglob->gl_offs >= INT_MAX ||
+ pglob->gl_pathc >= INT_MAX ||
+ newn >= INT_MAX ||
+ SIZE_MAX / sizeof(*pathv) <= newn ||
+ SIZE_MAX / sizeof(*statv) <= newn) {
+ nospace:
+ for (i = pglob->gl_offs; i < (ssize_t)(newn - 2); i++) {
+ if (pglob->gl_pathv && pglob->gl_pathv[i])
+ free(pglob->gl_pathv[i]);
+ if ((pglob->gl_flags & GLOB_KEEPSTAT) != 0 &&
+ pglob->gl_pathv && pglob->gl_pathv[i])
+ free(pglob->gl_statv[i]);
+ }
+ if (pglob->gl_pathv) {
+ free(pglob->gl_pathv);
+ pglob->gl_pathv = NULL;
+ }
+ if (pglob->gl_statv) {
+ free(pglob->gl_statv);
+ pglob->gl_statv = NULL;
+ }
+ return(GLOB_NOSPACE);
+ }
+
+ pathv = realloc(pglob->gl_pathv, newn * sizeof(*pathv));
+ if (pathv == NULL)
+ goto nospace;
+ if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) {
+ /* first time around -- clear initial gl_offs items */
+ pathv += pglob->gl_offs;
+ for (i = pglob->gl_offs; --i >= 0; )
+ *--pathv = NULL;
+ }
+ pglob->gl_pathv = pathv;
+
+ if ((pglob->gl_flags & GLOB_KEEPSTAT) != 0) {
+ statv = realloc(pglob->gl_statv, newn * sizeof(*statv));
+ if (statv == NULL)
+ goto nospace;
+ if (pglob->gl_statv == NULL && pglob->gl_offs > 0) {
+ /* first time around -- clear initial gl_offs items */
+ statv += pglob->gl_offs;
+ for (i = pglob->gl_offs; --i >= 0; )
+ *--statv = NULL;
+ }
+ pglob->gl_statv = statv;
+ if (sb == NULL)
+ statv[pglob->gl_offs + pglob->gl_pathc] = NULL;
+ else {
+ limitp->glim_malloc += sizeof(**statv);
+ if ((pglob->gl_flags & GLOB_LIMIT) &&
+ limitp->glim_malloc >= GLOB_LIMIT_MALLOC) {
+ errno = 0;
+ return(GLOB_NOSPACE);
+ }
+ if ((statv[pglob->gl_offs + pglob->gl_pathc] =
+ malloc(sizeof(**statv))) == NULL)
+ goto copy_error;
+ memcpy(statv[pglob->gl_offs + pglob->gl_pathc], sb,
+ sizeof(*sb));
+ }
+ statv[pglob->gl_offs + pglob->gl_pathc + 1] = NULL;
+ }
+
+ for (p = path; *p++;)
+ ;
+ len = (size_t)(p - path);
+ limitp->glim_malloc += len;
+ 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;
+
+ if ((pglob->gl_flags & GLOB_LIMIT) &&
+ (newn * sizeof(*pathv)) + limitp->glim_malloc >
+ GLOB_LIMIT_MALLOC) {
+ errno = 0;
+ return(GLOB_NOSPACE);
+ }
+ copy_error:
+ return(copy == NULL ? GLOB_NOSPACE : 0);
+}
+
+
+/*
+ * pattern matching function for filenames. Each occurrence of the *
+ * pattern causes a recursion level.
+ */
+static int
+match(Char *name, Char *pat, Char *patend, int recur)
+{
+ int ok, negate_range;
+ Char c, k;
+
+ if (recur-- == 0)
+ return(GLOB_NOSPACE);
+
+ 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);
+ do {
+ if (match(name, pat, patend, recur))
+ return(1);
+ } while (*name++ != EOS);
+ return(0);
+ case M_ONE:
+ if (*name++ == EOS)
+ return(0);
+ break;
+ case M_SET:
+ ok = 0;
+ if ((k = *name++) == EOS)
+ return(0);
+ if ((negate_range = ((*pat & M_MASK) == M_NOT)) != EOS)
+ ++pat;
+ while (((c = *pat++) & M_MASK) != M_END) {
+ if ((c & M_MASK) == M_CLASS) {
+ Char idx = *pat & M_MASK;
+ if (idx < NCCLASSES &&
+ cclasses[idx].isctype(k))
+ ok = 1;
+ ++pat;
+ }
+ 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)
+{
+ int i;
+ char **pp;
+
+ 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;
+ }
+ if (pglob->gl_statv != NULL) {
+ for (i = 0; i < pglob->gl_pathc; i++) {
+ if (pglob->gl_statv[i] != NULL)
+ free(pglob->gl_statv[i]);
+ }
+ free(pglob->gl_statv);
+ pglob->gl_statv = NULL;
+ }
+}
+
+static DIR *
+g_opendir(Char *str, glob_t *pglob)
+{
+ char buf[MAXPATHLEN];
+
+ if (!*str)
+ 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, struct stat *sb, glob_t *pglob)
+{
+ char buf[MAXPATHLEN];
+
+ 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, struct stat *sb, glob_t *pglob)
+{
+ char buf[MAXPATHLEN];
+
+ 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)
+{
+ do {
+ if (*str == ch)
+ return ((Char *)str);
+ } while (*str++);
+ return (NULL);
+}
+
+static int
+g_Ctoc(const Char *str, char *buf, u_int len)
+{
+
+ while (len--) {
+ if ((*buf++ = *str++) == EOS)
+ return (0);
+ }
+ return (1);
+}
+
+#ifdef DEBUG
+static void
+qprintf(const char *str, Char *s)
+{
+ Char *p;
+
+ (void)printf("%s:\n", str);
+ for (p = s; *p; p++)
+ (void)printf("%c", CHAR(*p));
+ (void)printf("\n");
+ for (p = s; *p; p++)
+ (void)printf("%c", *p & M_PROTECT ? '"' : ' ');
+ (void)printf("\n");
+ for (p = s; *p; p++)
+ (void)printf("%c", ismeta(*p) ? '_' : ' ');
+ (void)printf("\n");
+}
+#endif
+
+#endif /* !defined(HAVE_GLOB) || !defined(GLOB_HAS_ALTDIRFUNC) ||
+ !defined(GLOB_HAS_GL_MATCHC) || !defined(GLOB_HAS_GL_STATV) */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 13:18:45 +0000