/* * 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. */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)glob.c 8.3 (Berkeley) 10/13/93"; /* most changes between the version above and the one below have been ported: static char sscsid[]= "$OpenBSD: glob.c,v 1.8.10.1 2001/04/10 jason Exp $"; */ #endif /* LIBC_SCCS and not lint */ /* * glob(3) -- a superset of the one defined in POSIX 1003.2. * * The [!...] convention to negate a range is supported (SysV, Posix, ksh). * * Optional extra services, controlled by flags not defined by POSIX: * * GLOB_QUOTE: * Escaping convention: \ inhibits any special meaning the following * character might have (except \ at end of string is retained). * GLOB_MAGCHAR: * Set in gl_flags if pattern contained a globbing character. * GLOB_NOMAGIC: * Same as GLOB_NOCHECK, but it will only append pattern if it did * not contain any magic characters. [Used in csh style globbing] * GLOB_ALTDIRFUNC: * Use alternately specified directory access functions. * GLOB_TILDE: * expand ~user/foo to the /home/dir/of/user/foo * GLOB_BRACE: * expand {1,2}{a,b} to 1a 1b 2a 2b * gl_matchc: * Number of matches in the current invocation of glob. * GLOB_ALPHASORT: * sort alphabetically like csh (case doesn't matter) instead of in ASCII * order */ #include #include #include #include "bsd_glob.h" #ifdef I_PWD # include #else #if defined(HAS_PASSWD) && !defined(VMS) struct passwd *getpwnam(char *); struct passwd *getpwuid(Uid_t); #endif #endif #ifndef MAXPATHLEN # ifdef PATH_MAX # define MAXPATHLEN PATH_MAX # ifdef MACOS_TRADITIONAL # define MAXPATHLEN 255 # else # define MAXPATHLEN 1024 # endif # endif #endif #ifdef I_LIMITS #include #endif #ifndef ARG_MAX # ifdef MACOS_TRADITIONAL # define ARG_MAX 65536 /* Mac OS is actually unlimited */ # else # ifdef _SC_ARG_MAX # define ARG_MAX (sysconf(_SC_ARG_MAX)) # else # ifdef _POSIX_ARG_MAX # define ARG_MAX _POSIX_ARG_MAX # else # ifdef WIN32 # define ARG_MAX 14500 /* from VC's limits.h */ # else # define ARG_MAX 4096 /* from POSIX, be conservative */ # endif # endif # endif # endif #endif #define BG_DOLLAR '$' #define BG_DOT '.' #define BG_EOS '\0' #define BG_LBRACKET '[' #define BG_NOT '!' #define BG_QUESTION '?' #define BG_QUOTE '\\' #define BG_RANGE '-' #define BG_RBRACKET ']' #ifdef MACOS_TRADITIONAL # define BG_SEP ':' #else # define BG_SEP '/' #endif #ifdef DOSISH #define BG_SEP2 '\\' #endif #define BG_STAR '*' #define BG_TILDE '~' #define BG_UNDERSCORE '_' #define BG_LBRACE '{' #define BG_RBRACE '}' #define BG_SLASH '/' #define BG_COMMA ',' #ifndef GLOB_DEBUG #define M_QUOTE 0x8000 #define M_PROTECT 0x4000 #define M_MASK 0xffff #define M_ASCII 0x00ff typedef U16 Char; #else #define M_QUOTE 0x80 #define M_PROTECT 0x40 #define M_MASK 0xff #define M_ASCII 0x7f typedef U8 Char; #endif /* !GLOB_DEBUG */ #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 ci_compare(const void *, const void *); static int g_Ctoc(const Char *, char *, STRLEN); static int g_lstat(Char *, Stat_t *, glob_t *); static DIR *g_opendir(Char *, glob_t *); static Char *g_strchr(Char *, int); static int g_stat(Char *, Stat_t *, glob_t *); static int glob0(const Char *, glob_t *); static int glob1(Char *, Char *, glob_t *, size_t *); static int glob2(Char *, Char *, Char *, Char *, Char *, Char *, glob_t *, size_t *); static int glob3(Char *, Char *, Char *, Char *, Char *, Char *, Char *, 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 *); static int globexp2(const Char *, const Char *, glob_t *, int *); static int match(Char *, Char *, Char *, int); #ifdef GLOB_DEBUG static void qprintf(const char *, Char *); #endif /* GLOB_DEBUG */ #ifdef PERL_IMPLICIT_CONTEXT static Direntry_t * my_readdir(DIR*); static Direntry_t * my_readdir(DIR *d) { #ifndef NETWARE return PerlDir_read(d); #else return (DIR *)PerlDir_read(d); #endif } #else #define my_readdir readdir #endif #ifdef MACOS_TRADITIONAL #include #include #include #define NO_UPDIR_ERR 1 /* updir resolving failed */ static Boolean g_matchVol; /* global variable */ static short updir(char *path); static short resolve_updirs(char *new_pattern); static void remove_trColon(char *path); static short glob_mark_Mac(Char *pathbuf, Char *pathend, Char *pathend_last); static OSErr GetVolInfo(short volume, Boolean indexed, FSSpec *spec); static void name_f_FSSpec(StrFileName volname, FSSpec *spec); #endif int bsd_glob(const char *pattern, int flags, int (*errfunc)(const char *, int), glob_t *pglob) { const U8 *patnext; int c; Char *bufnext, *bufend, patbuf[MAXPATHLEN]; #ifdef MACOS_TRADITIONAL char *new_pat, *p, *np; int err; size_t len; #endif #ifndef MACOS_TRADITIONAL patnext = (U8 *) pattern; #endif 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 - 1; #ifdef DOSISH /* Nasty hack to treat patterns like "C:*" correctly. In this * case, the * should match any file in the current directory * on the C: drive. However, the glob code does not treat the * colon specially, so it looks for files beginning "C:" in * the current directory. To fix this, change the pattern to * add an explicit "./" at the start (just after the drive * letter and colon - ie change to "C:./"). */ if (isalpha(pattern[0]) && pattern[1] == ':' && pattern[2] != BG_SEP && pattern[2] != BG_SEP2 && bufend - bufnext > 4) { *bufnext++ = pattern[0]; *bufnext++ = ':'; *bufnext++ = '.'; *bufnext++ = BG_SEP; patnext += 2; } #endif #ifdef MACOS_TRADITIONAL /* Check if we need to match a volume name (e.g. '*HD:*') */ g_matchVol = false; p = (char *) pattern; if (*p != BG_SEP) { p++; while (*p != BG_EOS) { if (*p == BG_SEP) { g_matchVol = true; break; } p++; } } /* Transform the pattern: * (a) Resolve updirs, e.g. * '*:t*p::' -> '*:' * ':a*:tmp::::' -> '::' * ':base::t*p:::' -> '::' * '*HD::' -> return 0 (error, quit silently) * * (b) Remove a single trailing ':', unless it's a "match volume only" * pattern like '*HD:'; e.g. * '*:tmp:' -> '*:tmp' but * '*HD:' -> '*HD:' * (If we don't do that, even filenames will have a trailing ':' in * the result.) */ /* We operate on a copy of the pattern */ len = strlen(pattern); New(0, new_pat, len + 1, char); if (new_pat == NULL) return (GLOB_NOSPACE); p = (char *) pattern; np = new_pat; while (*np++ = *p++) ; /* Resolve updirs ... */ err = resolve_updirs(new_pat); if (err) { Safefree(new_pat); /* The pattern is incorrect: tried to move up above the volume root, see above. We quit silently. */ return 0; } /* remove trailing colon ... */ remove_trColon(new_pat); patnext = (U8 *) new_pat; #endif /* MACOS_TRADITIONAL */ if (flags & GLOB_QUOTE) { /* Protect the quoted characters. */ while (bufnext < bufend && (c = *patnext++) != BG_EOS) if (c == BG_QUOTE) { #ifdef DOSISH /* To avoid backslashitis on Win32, * we only treat \ as a quoting character * if it precedes one of the * metacharacters []-{}~\ */ if ((c = *patnext++) != '[' && c != ']' && c != '-' && c != '{' && c != '}' && c != '~' && c != '\\') { #else if ((c = *patnext++) == BG_EOS) { #endif c = BG_QUOTE; --patnext; } *bufnext++ = c | M_PROTECT; } else *bufnext++ = c; } else while (bufnext < bufend && (c = *patnext++) != BG_EOS) *bufnext++ = c; *bufnext = BG_EOS; #ifdef MACOS_TRADITIONAL if (flags & GLOB_BRACE) err = globexp1(patbuf, pglob); else err = glob0(patbuf, pglob); Safefree(new_pat); return err; #else if (flags & GLOB_BRACE) return globexp1(patbuf, pglob); else return glob0(patbuf, pglob); #endif } /* * 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) { const Char* ptr = pattern; int rv; /* Protect a single {}, for find(1), like csh */ if (pattern[0] == BG_LBRACE && pattern[1] == BG_RBRACE && pattern[2] == BG_EOS) return glob0(pattern, pglob); while ((ptr = (const Char *) g_strchr((Char *) ptr, BG_LBRACE)) != NULL) if (!globexp2(ptr, pattern, pglob, &rv)) return rv; return glob0(pattern, pglob); } /* * 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) { int i; 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 = BG_EOS; ls = lm; /* Find the balanced brace */ for (i = 0, pe = ++ptr; *pe; pe++) if (*pe == BG_LBRACKET) { /* Ignore everything between [] */ for (pm = pe++; *pe != BG_RBRACKET && *pe != BG_EOS; pe++) ; if (*pe == BG_EOS) { /* * We could not find a matching BG_RBRACKET. * Ignore and just look for BG_RBRACE */ pe = pm; } } else if (*pe == BG_LBRACE) i++; else if (*pe == BG_RBRACE) { if (i == 0) break; i--; } /* Non matching braces; just glob the pattern */ if (i != 0 || *pe == BG_EOS) { *rv = glob0(patbuf, pglob); return 0; } for (i = 0, pl = pm = ptr; pm <= pe; pm++) { switch (*pm) { case BG_LBRACKET: /* Ignore everything between [] */ for (pl = pm++; *pm != BG_RBRACKET && *pm != BG_EOS; pm++) ; if (*pm == BG_EOS) { /* * We could not find a matching BG_RBRACKET. * Ignore and just look for BG_RBRACE */ pm = pl; } break; case BG_LBRACE: i++; break; case BG_RBRACE: if (i) { i--; break; } /* FALLTHROUGH */ case BG_COMMA: if (i && *pm == BG_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++) != BG_EOS; ) ; /* Expand the current pattern */ #ifdef GLOB_DEBUG qprintf("globexp2:", patbuf); #endif /* GLOB_DEBUG */ *rv = globexp1(patbuf, pglob); /* 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) { char *h; const Char *p; Char *b, *eb; if (*pattern != BG_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 != BG_SLASH; *h++ = (char)*p++) ; *h = BG_EOS; #if 0 if (h == (char *)eb) return what; #endif if (((char *) patbuf)[0] == BG_EOS) { /* * handle a plain ~ or ~/ by expanding $HOME * first and then trying the password file */ if ((h = getenv("HOME")) == NULL) { #ifdef HAS_PASSWD struct passwd *pwd; if ((pwd = getpwuid(getuid())) == NULL) return pattern; else h = pwd->pw_dir; #else return pattern; #endif } } else { /* * Expand a ~user */ #ifdef HAS_PASSWD struct passwd *pwd; if ((pwd = getpwnam((char*) patbuf)) == NULL) return pattern; else h = pwd->pw_dir; #else return pattern; #endif } /* Copy the home directory */ for (b = patbuf; b < eb && *h; *b++ = *h++) ; /* Append the rest of the pattern */ while (b < eb && (*b++ = *p++) != BG_EOS) ; *b = BG_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. It is not an error * to find no matches. */ static int glob0(const Char *pattern, glob_t *pglob) { const Char *qpat, *qpatnext; int c, err, oldflags, oldpathc; Char *bufnext, patbuf[MAXPATHLEN]; size_t limit = 0; #ifdef MACOS_TRADITIONAL if ( (*pattern == BG_TILDE) && (pglob->gl_flags & GLOB_TILDE) ) { return(globextend(pattern, pglob, &limit)); } #endif qpat = globtilde(pattern, patbuf, MAXPATHLEN, pglob); qpatnext = qpat; oldflags = pglob->gl_flags; oldpathc = pglob->gl_pathc; bufnext = patbuf; /* We don't need to check for buffer overflow any more. */ while ((c = *qpatnext++) != BG_EOS) { switch (c) { case BG_LBRACKET: c = *qpatnext; if (c == BG_NOT) ++qpatnext; if (*qpatnext == BG_EOS || g_strchr((Char *) qpatnext+1, BG_RBRACKET) == NULL) { *bufnext++ = BG_LBRACKET; if (c == BG_NOT) --qpatnext; break; } *bufnext++ = M_SET; if (c == BG_NOT) *bufnext++ = M_NOT; c = *qpatnext++; do { *bufnext++ = CHAR(c); if (*qpatnext == BG_RANGE && (c = qpatnext[1]) != BG_RBRACKET) { *bufnext++ = M_RNG; *bufnext++ = CHAR(c); qpatnext += 2; } } while ((c = *qpatnext++) != BG_RBRACKET); pglob->gl_flags |= GLOB_MAGCHAR; *bufnext++ = M_END; break; case BG_QUESTION: pglob->gl_flags |= GLOB_MAGCHAR; *bufnext++ = M_ONE; break; case BG_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 = BG_EOS; #ifdef GLOB_DEBUG qprintf("glob0:", patbuf); #endif /* GLOB_DEBUG */ if ((err = glob1(patbuf, patbuf+MAXPATHLEN-1, pglob, &limit)) != 0) { pglob->gl_flags = oldflags; 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 && ((pglob->gl_flags & GLOB_NOCHECK) || ((pglob->gl_flags & GLOB_NOMAGIC) && !(pglob->gl_flags & GLOB_MAGCHAR)))) { #ifdef GLOB_DEBUG printf("calling globextend from glob0\n"); #endif /* GLOB_DEBUG */ pglob->gl_flags = oldflags; return(globextend(qpat, pglob, &limit)); } else if (!(pglob->gl_flags & GLOB_NOSORT)) qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc, pglob->gl_pathc - oldpathc, sizeof(char *), (pglob->gl_flags & (GLOB_ALPHASORT|GLOB_NOCASE)) ? ci_compare : compare); pglob->gl_flags = oldflags; return(0); } static int ci_compare(const void *p, const void *q) { const char *pp = *(const char **)p; const char *qq = *(const char **)q; int ci; while (*pp && *qq) { if (toLOWER(*pp) != toLOWER(*qq)) break; ++pp; ++qq; } ci = toLOWER(*pp) - toLOWER(*qq); if (ci == 0) return compare(p, q); return ci; } static int compare(const void *p, const void *q) { return(strcmp(*(char **)p, *(char **)q)); } static int glob1(Char *pattern, Char *pattern_last, glob_t *pglob, size_t *limitp) { Char pathbuf[MAXPATHLEN]; /* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */ if (*pattern == BG_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, size_t *limitp) { Stat_t 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 == BG_EOS) { /* End of pattern? */ *pathend = BG_EOS; if (g_lstat(pathbuf, &sb, pglob)) return(0); if (((pglob->gl_flags & GLOB_MARK) && pathend[-1] != BG_SEP #ifdef DOSISH && pathend[-1] != BG_SEP2 #endif ) && (S_ISDIR(sb.st_mode) || (S_ISLNK(sb.st_mode) && (g_stat(pathbuf, &sb, pglob) == 0) && S_ISDIR(sb.st_mode)))) { #ifdef MACOS_TRADITIONAL short err; err = glob_mark_Mac(pathbuf, pathend, pathend_last); if (err) return (err); #else if (pathend+1 > pathend_last) return (1); *pathend++ = BG_SEP; *pathend = BG_EOS; #endif } ++pglob->gl_matchc; #ifdef GLOB_DEBUG printf("calling globextend from glob2\n"); #endif /* GLOB_DEBUG */ return(globextend(pathbuf, pglob, limitp)); } /* Find end of next segment, copy tentatively to pathend. */ q = pathend; p = pattern; while (*p != BG_EOS && *p != BG_SEP #ifdef DOSISH && *p != BG_SEP2 #endif ) { 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 == BG_SEP #ifdef DOSISH || *pattern == BG_SEP2 #endif ) { if (pathend+1 > pathend_last) return (1); *pathend++ = *pattern++; } } else /* Need expansion, recurse. */ return(glob3(pathbuf, pathbuf_last, pathend, pathend_last, pattern, pattern_last, p, pattern_last, pglob, limitp)); } /* NOTREACHED */ } static int glob3(Char *pathbuf, Char *pathbuf_last, Char *pathend, Char *pathend_last, Char *pattern, Char *pattern_last, Char *restpattern, Char *restpattern_last, glob_t *pglob, size_t *limitp) { register Direntry_t *dp; DIR *dirp; int err; int nocase; 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. */ Direntry_t *(*readdirfunc)(DIR*); if (pathend > pathend_last) return (1); *pathend = BG_EOS; errno = 0; #ifdef VMS { Char *q = pathend; if (q - pathbuf > 5) { q -= 5; if (q[0] == '.' && tolower(q[1]) == 'd' && tolower(q[2]) == 'i' && tolower(q[3]) == 'r' && q[4] == '/') { q[0] = '/'; q[1] = BG_EOS; pathend = q+1; } } } #endif #ifdef MACOS_TRADITIONAL if ((!*pathbuf) && (g_matchVol)) { FSSpec spec; short index; StrFileName vol_name; /* unsigned char[64] on MacOS */ err = 0; nocase = ((pglob->gl_flags & GLOB_NOCASE) != 0); /* Get and match a list of volume names */ for (index = 0; !GetVolInfo(index+1, true, &spec); ++index) { register U8 *sc; register Char *dc; name_f_FSSpec(vol_name, &spec); /* Initial BG_DOT must be matched literally. */ if (*vol_name == BG_DOT && *pattern != BG_DOT) continue; dc = pathend; sc = (U8 *) vol_name; while (dc < pathend_last && (*dc++ = *sc++) != BG_EOS) ; if (dc >= pathend_last) { *dc = BG_EOS; err = 1; break; } if (!match(pathend, pattern, restpattern, nocase)) { *pathend = BG_EOS; continue; } err = glob2(pathbuf, pathbuf_last, --dc, pathend_last, restpattern, restpattern_last, pglob, limitp); if (err) break; } return(err); } else { /* open dir */ #endif /* MACOS_TRADITIONAL */ 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_ABEND); if (pglob->gl_errfunc(buf, errno) || (pglob->gl_flags & GLOB_ERR)) return (GLOB_ABEND); } return(0); } err = 0; nocase = ((pglob->gl_flags & GLOB_NOCASE) != 0); /* Search directory for matching names. */ if (pglob->gl_flags & GLOB_ALTDIRFUNC) readdirfunc = (Direntry_t *(*)(DIR *))pglob->gl_readdir; else readdirfunc = my_readdir; while ((dp = (*readdirfunc)(dirp))) { register U8 *sc; register Char *dc; /* Initial BG_DOT must be matched literally. */ if (dp->d_name[0] == BG_DOT && *pattern != BG_DOT) continue; dc = pathend; sc = (U8 *) dp->d_name; while (dc < pathend_last && (*dc++ = *sc++) != BG_EOS) ; if (dc >= pathend_last) { *dc = BG_EOS; err = 1; break; } if (!match(pathend, pattern, restpattern, nocase)) { *pathend = BG_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 PerlDir_close(dirp); return(err); #ifdef MACOS_TRADITIONAL } #endif } /* * 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 *limitp) { register char **pathv; register int i; STRLEN newsize, len; char *copy; const Char *p; #ifdef GLOB_DEBUG printf("Adding "); for (p = path; *p; p++) (void)printf("%c", CHAR(*p)); printf("\n"); #endif /* GLOB_DEBUG */ newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs); if (pglob->gl_pathv) pathv = Renew(pglob->gl_pathv,newsize,char*); else New(0,pathv,newsize,char*); if (pathv == NULL) { if (pglob->gl_pathv) { Safefree(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; --i >= 0; ) *--pathv = NULL; } pglob->gl_pathv = pathv; for (p = path; *p++;) ; len = (STRLEN)(p - path); *limitp += len; New(0, copy, p-path, char); if (copy != NULL) { if (g_Ctoc(path, copy, len)) { Safefree(copy); return(GLOB_NOSPACE); } pathv[pglob->gl_offs + pglob->gl_pathc++] = copy; } pathv[pglob->gl_offs + pglob->gl_pathc] = NULL; if ((pglob->gl_flags & GLOB_LIMIT) && newsize + *limitp >= ARG_MAX) { errno = 0; return(GLOB_NOSPACE); } return(copy == NULL ? GLOB_NOSPACE : 0); } /* * pattern matching function for filenames. Each occurrence of the * * pattern causes a recursion level. */ static int match(register Char *name, register Char *pat, register Char *patend, int nocase) { 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, nocase)) return(1); while (*name++ != BG_EOS) ; return(0); case M_ONE: if (*name++ == BG_EOS) return(0); break; case M_SET: ok = 0; if ((k = *name++) == BG_EOS) return(0); if ((negate_range = ((*pat & M_MASK) == M_NOT)) != BG_EOS) ++pat; while (((c = *pat++) & M_MASK) != M_END) if ((*pat & M_MASK) == M_RNG) { if (nocase) { if (tolower(c) <= tolower(k) && tolower(k) <= tolower(pat[1])) ok = 1; } else { if (c <= k && k <= pat[1]) ok = 1; } pat += 2; } else if (nocase ? (tolower(c) == tolower(k)) : (c == k)) ok = 1; if (ok == negate_range) return(0); break; default: k = *name++; if (nocase ? (tolower(k) != tolower(c)) : (k != c)) return(0); break; } } return(*name == BG_EOS); } /* Free allocated data belonging to a glob_t structure. */ void bsd_globfree(glob_t *pglob) { register int i; register char **pp; if (pglob->gl_pathv != NULL) { pp = pglob->gl_pathv + pglob->gl_offs; for (i = pglob->gl_pathc; i--; ++pp) if (*pp) Safefree(*pp); Safefree(pglob->gl_pathv); pglob->gl_pathv = NULL; } } static DIR * g_opendir(register Char *str, glob_t *pglob) { char buf[MAXPATHLEN]; if (!*str) { #ifdef MACOS_TRADITIONAL strcpy(buf, ":"); #else strcpy(buf, "."); #endif } else { if (g_Ctoc(str, buf, sizeof(buf))) return(NULL); } if (pglob->gl_flags & GLOB_ALTDIRFUNC) return((*pglob->gl_opendir)(buf)); return(PerlDir_open(buf)); } static int g_lstat(register Char *fn, Stat_t *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)); #ifdef HAS_LSTAT return(PerlLIO_lstat(buf, sb)); #else return(PerlLIO_stat(buf, sb)); #endif /* HAS_LSTAT */ } static int g_stat(register Char *fn, Stat_t *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(PerlLIO_stat(buf, sb)); } static Char * g_strchr(Char *str, int ch) { do { if (*str == ch) return (str); } while (*str++); return (NULL); } static int g_Ctoc(register const Char *str, char *buf, STRLEN len) { while (len--) { if ((*buf++ = (char)*str++) == BG_EOS) return (0); } return (1); } #ifdef GLOB_DEBUG static void qprintf(const char *str, register Char *s) { register 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 /* GLOB_DEBUG */ #ifdef MACOS_TRADITIONAL /* Replace the last occurence of the pattern ":[^:]+::", e.g. ":lib::", with a single ':', if possible. It is not an error, if the pattern doesn't match (we return -1), but if there are two consecutive colons '::', there must be a preceding ':[^:]+'. Hence, a volume path like "HD::" is considered to be an error (we return 1), that is, it can't be resolved. We return 0 on success. */ static short updir(char *path) { char *pb, *pe, *lastchar; char *bgn_mark, *end_mark; char *f, *m, *b; /* front, middle, back */ size_t len; len = strlen(path); lastchar = path + (len-1); b = lastchar; m = lastchar-1; f = lastchar-2; /* find a '[^:]::' (e.g. b::) pattern ... */ while ( !( (*f != BG_SEP) && (*m == BG_SEP) && (*b == BG_SEP) ) && (f >= path)) { f--; m--; b--; } if (f < path) { /* no (more) match */ return -1; } end_mark = b; /* ... and now find its preceding colon ':' */ while ((*f != BG_SEP) && (f >= path)) { f--; } if (f < path) { /* No preceding colon found, must be a volume path. We can't move up the tree and that's an error */ return 1; } bgn_mark = f; /* Shrink path, i.e. exclude all characters between bgn_mark and end_mark */ pb = bgn_mark; pe = end_mark; while (*pb++ = *pe++) ; return 0; } /* Resolve all updirs in pattern. */ static short resolve_updirs(char *new_pattern) { short err; do { err = updir(new_pattern); } while (!err); if (err == 1) { return NO_UPDIR_ERR; } return 0; } /* Remove a trailing colon from the path, but only if it's not a volume path (e.g. HD:) and not a path consisting solely of colons. */ static void remove_trColon(char *path) { char *lastchar, *lc; /* if path matches the pattern /:[^:]+:$/, we can remove the trailing ':' */ lc = lastchar = path + (strlen(path) - 1); if (*lastchar == BG_SEP) { /* there's a trailing ':', there must be at least one preceding char != ':' and a preceding ':' */ lc--; if ((*lc != BG_SEP) && (lc >= path)) { lc--; } else { return; } while ((*lc != BG_SEP) && (lc >= path)) { lc--; } if (lc >= path) { /* ... there's a preceding ':', we remove the trailing colon */ *lastchar = BG_EOS; } } } /* With the GLOB_MARK flag on, we append a colon, if pathbuf is a directory. If the directory name contains no colons, e.g. 'lib', we can't simply append a ':', since this (e.g. 'lib:') is not a valid (relative) path on Mac OS. Instead, we add a leading _and_ trailing ':'. */ static short glob_mark_Mac(Char *pathbuf, Char *pathend, Char *pathend_last) { Char *p, *pe; Boolean is_file = true; /* check if pathbuf contains a ':', i.e. is not a file name */ p = pathbuf; while (*p != BG_EOS) { if (*p == BG_SEP) { is_file = false; break; } p++; } if (is_file) { if (pathend+2 > pathend_last) { return (1); } /* right shift one char */ pe = p = pathend; p--; pathend++; while (p >= pathbuf) { *pe-- = *p--; } /* first char becomes a colon */ *pathbuf = BG_SEP; /* append a colon */ *pathend++ = BG_SEP; *pathend = BG_EOS; } else { if (pathend+1 > pathend_last) { return (1); } *pathend++ = BG_SEP; *pathend = BG_EOS; } return 0; } /* Return a FSSpec record for the specified volume (borrowed from MacPerl.xs). */ static OSErr GetVolInfo(short volume, Boolean indexed, FSSpec* spec) { OSErr err; /* OSErr: 16-bit integer */ HParamBlockRec pb; pb.volumeParam.ioNamePtr = spec->name; pb.volumeParam.ioVRefNum = indexed ? 0 : volume; pb.volumeParam.ioVolIndex = indexed ? volume : 0; if (err = PBHGetVInfoSync(&pb)) return err; spec->vRefNum = pb.volumeParam.ioVRefNum; spec->parID = 1; return noErr; /* 0 */ } /* Extract a C name from a FSSpec. Note that there are no leading or trailing colons. */ static void name_f_FSSpec(StrFileName name, FSSpec *spec) { unsigned char *nc; const short len = spec->name[0]; short i; /* FSSpec.name is a Pascal string, convert it to C ... */ nc = name; for (i=1; i<=len; i++) { *nc++ = spec->name[i]; } *nc = BG_EOS; } #endif /* MACOS_TRADITIONAL */