Swift
summaryrefslogtreecommitdiffstats
path: root/3rdParty/Unbound/src/android/compat/glob.c
diff options
context:
space:
mode:
authorRemko Tronçon <git@el-tramo.be>2013-08-13 20:59:10 (GMT)
committerRemko Tronçon <git@el-tramo.be>2013-08-13 21:00:25 (GMT)
commit2c44d0818bb838e799fe7fc01875583dc75f0766 (patch)
tree056cef340daa57fce8d1b29332c4e07baad7b56a /3rdParty/Unbound/src/android/compat/glob.c
parent437e70ff9d254b11a30a4926010a91543d7f282c (diff)
downloadswift-2c44d0818bb838e799fe7fc01875583dc75f0766.zip
swift-2c44d0818bb838e799fe7fc01875583dc75f0766.tar.bz2
Adding auto-generated Ldns/Unbound files for Android.
Change-Id: I13dd702273dce5560ebaeb3fa4cf0ea3be37afbc
Diffstat (limited to '3rdParty/Unbound/src/android/compat/glob.c')
-rw-r--r--3rdParty/Unbound/src/android/compat/glob.c906
1 files changed, 906 insertions, 0 deletions
diff --git a/3rdParty/Unbound/src/android/compat/glob.c b/3rdParty/Unbound/src/android/compat/glob.c
new file mode 100644
index 0000000..cec80ed
--- /dev/null
+++ b/3rdParty/Unbound/src/android/compat/glob.c
@@ -0,0 +1,906 @@
+/*
+ * Natanael Arndt, 2011: removed collate.h dependencies
+ * (my changes are trivial)
+ *
+ * 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.
+ * 4. 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)glob.c 8.3 (Berkeley) 10/13/93";
+#endif /* LIBC_SCCS and not lint */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * 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.
+ */
+
+/*
+ * Some notes on multibyte character support:
+ * 1. Patterns with illegal byte sequences match nothing - even if
+ * GLOB_NOCHECK is specified.
+ * 2. Illegal byte sequences in filenames are handled by treating them as
+ * single-byte characters with a value of the first byte of the sequence
+ * cast to wchar_t.
+ * 3. State-dependent encodings are not currently supported.
+ */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <ctype.h>
+#include <dirent.h>
+#include <errno.h>
+#include <glob.h>
+#include <limits.h>
+#include <pwd.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <wchar.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 0x8000000000ULL
+#define M_PROTECT 0x4000000000ULL
+#define M_MASK 0xffffffffffULL
+#define M_CHAR 0x00ffffffffULL
+
+typedef uint_fast64_t Char;
+
+#else
+
+#define M_QUOTE 0x80
+#define M_PROTECT 0x40
+#define M_MASK 0xff
+#define M_CHAR 0x7f
+
+typedef char Char;
+
+#endif
+
+
+#define CHAR(c) ((Char)((c)&M_CHAR))
+#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 *, struct stat *, glob_t *);
+static DIR *g_opendir(Char *, glob_t *);
+static const Char *g_strchr(const Char *, wchar_t);
+#ifdef notdef
+static Char *g_strcat(Char *, const Char *);
+#endif
+static int g_stat(Char *, struct stat *, glob_t *);
+static int glob0(const Char *, glob_t *, size_t *);
+static int glob1(Char *, glob_t *, size_t *);
+static int glob2(Char *, Char *, Char *, Char *, glob_t *, size_t *);
+static int glob3(Char *, Char *, Char *, Char *, Char *, glob_t *, size_t *);
+static int globextend(const Char *, glob_t *, size_t *);
+static const Char *
+ globtilde(const Char *, Char *, size_t, glob_t *);
+static int globexp1(const Char *, glob_t *, size_t *);
+static int globexp2(const Char *, const Char *, glob_t *, int *, size_t *);
+static int match(Char *, Char *, Char *);
+#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 char *patnext;
+ size_t limit;
+ Char *bufnext, *bufend, patbuf[MAXPATHLEN], prot;
+ mbstate_t mbs;
+ wchar_t wc;
+ size_t clen;
+
+ patnext = pattern;
+ if (!(flags & GLOB_APPEND)) {
+ pglob->gl_pathc = 0;
+ pglob->gl_pathv = NULL;
+ if (!(flags & GLOB_DOOFFS))
+ pglob->gl_offs = 0;
+ }
+ if (flags & GLOB_LIMIT) {
+ limit = pglob->gl_matchc;
+ if (limit == 0)
+ limit = ARG_MAX;
+ } else
+ limit = 0;
+ pglob->gl_flags = flags & ~GLOB_MAGCHAR;
+ pglob->gl_errfunc = errfunc;
+ pglob->gl_matchc = 0;
+
+ bufnext = patbuf;
+ bufend = bufnext + MAXPATHLEN - 1;
+ if (flags & GLOB_NOESCAPE) {
+ memset(&mbs, 0, sizeof(mbs));
+ while (bufend - bufnext >= MB_CUR_MAX) {
+ clen = mbrtowc(&wc, patnext, MB_LEN_MAX, &mbs);
+ if (clen == (size_t)-1 || clen == (size_t)-2)
+ return (GLOB_NOMATCH);
+ else if (clen == 0)
+ break;
+ *bufnext++ = wc;
+ patnext += clen;
+ }
+ } else {
+ /* Protect the quoted characters. */
+ memset(&mbs, 0, sizeof(mbs));
+ while (bufend - bufnext >= MB_CUR_MAX) {
+ if (*patnext == QUOTE) {
+ if (*++patnext == EOS) {
+ *bufnext++ = QUOTE | M_PROTECT;
+ continue;
+ }
+ prot = M_PROTECT;
+ } else
+ prot = 0;
+ clen = mbrtowc(&wc, patnext, MB_LEN_MAX, &mbs);
+ if (clen == (size_t)-1 || clen == (size_t)-2)
+ return (GLOB_NOMATCH);
+ else if (clen == 0)
+ break;
+ *bufnext++ = wc | prot;
+ patnext += clen;
+ }
+ }
+ *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, size_t *limit)
+{
+ const Char* ptr = pattern;
+ int rv;
+
+ /* Protect a single {}, for find(1), like csh */
+ if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS)
+ return glob0(pattern, pglob, limit);
+
+ while ((ptr = 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, size_t *limit)
+{
+ int i;
+ Char *lm, *ls;
+ const Char *pe, *pm, *pm1, *pl;
+ Char patbuf[MAXPATHLEN];
+
+ /* copy part up to the brace */
+ for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++)
+ continue;
+ *lm = EOS;
+ ls = lm;
+
+ /* Find the balanced brace */
+ for (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) {
+ *rv = glob0(patbuf, pglob, limit);
+ return 0;
+ }
+
+ for (i = 0, pl = pm = ptr; pm <= pe; pm++)
+ switch (*pm) {
+ case LBRACKET:
+ /* Ignore everything between [] */
+ for (pm1 = pm++; *pm != RBRACKET && *pm != EOS; pm++)
+ continue;
+ if (*pm == EOS) {
+ /*
+ * We could not find a matching RBRACKET.
+ * Ignore and just look for RBRACE
+ */
+ pm = pm1;
+ }
+ 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 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++)
+ continue;
+
+ *h = EOS;
+
+ if (((char *) patbuf)[0] == EOS) {
+ /*
+ * handle a plain ~ or ~/ by expanding $HOME first (iff
+ * we're not running setuid or setgid) and then trying
+ * the password file
+ */
+ if (issetugid() != 0 ||
+ (h = getenv("HOME")) == NULL) {
+ if (((h = getlogin()) != NULL &&
+ (pwd = getpwnam(h)) != NULL) ||
+ (pwd = getpwuid(getuid())) != NULL)
+ h = pwd->pw_dir;
+ else
+ return pattern;
+ }
+ }
+ 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++)
+ continue;
+
+ /* Append the rest of the pattern */
+ while (b < eb && (*b++ = *p++) != EOS)
+ continue;
+ *b = EOS;
+
+ 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.
+ */
+static int
+glob0(const Char *pattern, glob_t *pglob, size_t *limit)
+{
+ const Char *qpatnext;
+ int err;
+ size_t oldpathc;
+ Char *bufnext, c, 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 {
+ *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, pglob, limit)) != 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, limit));
+ else
+ return(GLOB_NOMATCH);
+ }
+ if (!(pglob->gl_flags & GLOB_NOSORT))
+ qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc,
+ pglob->gl_pathc - oldpathc, sizeof(char *), compare);
+ return(0);
+}
+
+static int
+compare(const void *p, const void *q)
+{
+ return(strcmp(*(char **)p, *(char **)q));
+}
+
+static int
+glob1(Char *pattern, glob_t *pglob, size_t *limit)
+{
+ Char pathbuf[MAXPATHLEN];
+
+ /* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */
+ if (*pattern == EOS)
+ return(0);
+ return(glob2(pathbuf, pathbuf, pathbuf + MAXPATHLEN - 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 *pathend_last, Char *pattern,
+ glob_t *pglob, size_t *limit)
+{
+ 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_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 (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 + 1 > pathend_last)
+ return (GLOB_ABORTED);
+ *q++ = *p++;
+ }
+
+ if (!anymeta) { /* No expansion, do next segment. */
+ pathend = q;
+ pattern = p;
+ while (*pattern == SEP) {
+ if (pathend + 1 > pathend_last)
+ return (GLOB_ABORTED);
+ *pathend++ = *pattern++;
+ }
+ } else /* Need expansion, recurse. */
+ return(glob3(pathbuf, pathend, pathend_last, pattern, p,
+ pglob, limit));
+ }
+ /* NOTREACHED */
+}
+
+static int
+glob3(Char *pathbuf, Char *pathend, Char *pathend_last,
+ Char *pattern, Char *restpattern,
+ glob_t *pglob, size_t *limit)
+{
+ 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)();
+
+ if (pathend > pathend_last)
+ return (GLOB_ABORTED);
+ *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 = readdir;
+ while ((dp = (*readdirfunc)(dirp))) {
+ char *sc;
+ Char *dc;
+ wchar_t wc;
+ size_t clen;
+ mbstate_t mbs;
+
+ /* Initial DOT must be matched literally. */
+ if (dp->d_name[0] == DOT && *pattern != DOT)
+ continue;
+ memset(&mbs, 0, sizeof(mbs));
+ dc = pathend;
+ sc = dp->d_name;
+ while (dc < pathend_last) {
+ clen = mbrtowc(&wc, sc, MB_LEN_MAX, &mbs);
+ if (clen == (size_t)-1 || clen == (size_t)-2) {
+ wc = *sc;
+ clen = 1;
+ memset(&mbs, 0, sizeof(mbs));
+ }
+ if ((*dc++ = wc) == EOS)
+ break;
+ sc += clen;
+ }
+ if (!match(pathend, pattern, restpattern)) {
+ *pathend = EOS;
+ continue;
+ }
+ err = glob2(pathbuf, --dc, pathend_last, restpattern,
+ pglob, limit);
+ 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 accomodate 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, size_t *limit)
+{
+ char **pathv;
+ size_t i, newsize, len;
+ char *copy;
+ const Char *p;
+
+ if (*limit && pglob->gl_pathc > *limit) {
+ errno = 0;
+ return (GLOB_NOSPACE);
+ }
+
+ newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs);
+ pathv = pglob->gl_pathv ?
+ realloc((char *)pglob->gl_pathv, newsize) :
+ malloc(newsize);
+ if (pathv == NULL) {
+ if (pglob->gl_pathv) {
+ free(pglob->gl_pathv);
+ pglob->gl_pathv = NULL;
+ }
+ return(GLOB_NOSPACE);
+ }
+
+ if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) {
+ /* first time around -- clear initial gl_offs items */
+ pathv += pglob->gl_offs;
+ for (i = pglob->gl_offs + 1; --i > 0; )
+ *--pathv = NULL;
+ }
+ pglob->gl_pathv = pathv;
+
+ for (p = path; *p++;)
+ continue;
+ len = MB_CUR_MAX * (size_t)(p - path); /* XXX overallocation */
+ if ((copy = malloc(len)) != NULL) {
+ if (g_Ctoc(path, copy, len)) {
+ free(copy);
+ return (GLOB_NOSPACE);
+ }
+ pathv[pglob->gl_offs + pglob->gl_pathc++] = copy;
+ }
+ pathv[pglob->gl_offs + pglob->gl_pathc] = NULL;
+ return(copy == NULL ? GLOB_NOSPACE : 0);
+}
+
+/*
+ * pattern matching function for filenames. Each occurrence of the *
+ * pattern causes a recursion level.
+ */
+static int
+match(Char *name, Char *pat, Char *patend)
+{
+ int ok, negate_range;
+ Char c, k;
+
+ while (pat < patend) {
+ c = *pat++;
+ switch (c & M_MASK) {
+ case M_ALL:
+ if (pat == patend)
+ return(1);
+ do
+ if (match(name, pat, patend))
+ 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 ((*pat & M_MASK) == M_RNG) {
+ if (CHAR(c) <= CHAR(k) && CHAR(k) <= CHAR(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;
+
+ 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;
+ }
+}
+
+static DIR *
+g_opendir(Char *str, glob_t *pglob)
+{
+ char buf[MAXPATHLEN];
+
+ if (!*str)
+ strcpy(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))) {
+ errno = ENAMETOOLONG;
+ 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))) {
+ errno = ENAMETOOLONG;
+ return (-1);
+ }
+ if (pglob->gl_flags & GLOB_ALTDIRFUNC)
+ return((*pglob->gl_stat)(buf, sb));
+ return(stat(buf, sb));
+}
+
+static const Char *
+g_strchr(const Char *str, wchar_t ch)
+{
+
+ do {
+ if (*str == ch)
+ return (str);
+ } while (*str++);
+ return (NULL);
+}
+
+static int
+g_Ctoc(const Char *str, char *buf, size_t len)
+{
+ mbstate_t mbs;
+ size_t clen;
+
+ memset(&mbs, 0, sizeof(mbs));
+ while (len >= MB_CUR_MAX) {
+ clen = wcrtomb(buf, *str, &mbs);
+ if (clen == (size_t)-1)
+ return (1);
+ if (*str == L'\0')
+ return (0);
+ str++;
+ buf += clen;
+ len -= clen;
+ }
+ 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