1 /*
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Guido van Rossum.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #if defined(LIBC_SCCS) && !defined(lint)
34 static char sccsid[] = "@(#)glob.c 8.3 (Berkeley) 10/13/93";
35 /* most changes between the version above and the one below have been ported:
36 static char sscsid[]= "$OpenBSD: glob.c,v 1.8.10.1 2001/04/10 jason Exp $";
37 */
38 #endif /* LIBC_SCCS and not lint */
39
40 /*
41 * glob(3) -- a superset of the one defined in POSIX 1003.2.
42 *
43 * The [!...] convention to negate a range is supported (SysV, Posix, ksh).
44 *
45 * Optional extra services, controlled by flags not defined by POSIX:
46 *
47 * GLOB_QUOTE:
48 * Escaping convention: \ inhibits any special meaning the following
49 * character might have (except \ at end of string is retained).
50 * GLOB_MAGCHAR:
51 * Set in gl_flags if pattern contained a globbing character.
52 * GLOB_NOMAGIC:
53 * Same as GLOB_NOCHECK, but it will only append pattern if it did
54 * not contain any magic characters. [Used in csh style globbing]
55 * GLOB_ALTDIRFUNC:
56 * Use alternately specified directory access functions.
57 * GLOB_TILDE:
58 * expand ~user/foo to the /home/dir/of/user/foo
59 * GLOB_BRACE:
60 * expand {1,2}{a,b} to 1a 1b 2a 2b
61 * gl_matchc:
62 * Number of matches in the current invocation of glob.
63 * GLOB_ALPHASORT:
64 * sort alphabetically like csh (case doesn't matter) instead of in ASCII
65 * order
66 */
67
68 #include <EXTERN.h>
69 #include <perl.h>
70 #include <XSUB.h>
71
72 #include "bsd_glob.h"
73 #ifdef I_PWD
74 # include <pwd.h>
75 #else
76 #if defined(HAS_PASSWD) && !defined(VMS)
77 struct passwd *getpwnam(char *);
78 struct passwd *getpwuid(Uid_t);
79 #endif
80 #endif
81
82 #ifndef MAXPATHLEN
83 # ifdef PATH_MAX
84 # define MAXPATHLEN PATH_MAX
85 # ifdef MACOS_TRADITIONAL
86 # define MAXPATHLEN 255
87 # else
88 # define MAXPATHLEN 1024
89 # endif
90 # endif
91 #endif
92
93 #ifdef I_LIMITS
94 #include <limits.h>
95 #endif
96
97 #ifndef ARG_MAX
98 # ifdef MACOS_TRADITIONAL
99 # define ARG_MAX 65536 /* Mac OS is actually unlimited */
100 # else
101 # ifdef _SC_ARG_MAX
102 # define ARG_MAX (sysconf(_SC_ARG_MAX))
103 # else
104 # ifdef _POSIX_ARG_MAX
105 # define ARG_MAX _POSIX_ARG_MAX
106 # else
107 # ifdef WIN32
108 # define ARG_MAX 14500 /* from VC's limits.h */
109 # else
110 # define ARG_MAX 4096 /* from POSIX, be conservative */
111 # endif
112 # endif
113 # endif
114 # endif
115 #endif
116
117 #define BG_DOLLAR '$'
118 #define BG_DOT '.'
119 #define BG_EOS '\0'
120 #define BG_LBRACKET '['
121 #define BG_NOT '!'
122 #define BG_QUESTION '?'
123 #define BG_QUOTE '\\'
124 #define BG_RANGE '-'
125 #define BG_RBRACKET ']'
126 #ifdef MACOS_TRADITIONAL
127 # define BG_SEP ':'
128 #else
129 # define BG_SEP '/'
130 #endif
131 #ifdef DOSISH
132 #define BG_SEP2 '\\'
133 #endif
134 #define BG_STAR '*'
135 #define BG_TILDE '~'
136 #define BG_UNDERSCORE '_'
137 #define BG_LBRACE '{'
138 #define BG_RBRACE '}'
139 #define BG_SLASH '/'
140 #define BG_COMMA ','
141
142 #ifndef GLOB_DEBUG
143
144 #define M_QUOTE 0x8000
145 #define M_PROTECT 0x4000
146 #define M_MASK 0xffff
147 #define M_ASCII 0x00ff
148
149 typedef U16 Char;
150
151 #else
152
153 #define M_QUOTE 0x80
154 #define M_PROTECT 0x40
155 #define M_MASK 0xff
156 #define M_ASCII 0x7f
157
158 typedef U8 Char;
159
160 #endif /* !GLOB_DEBUG */
161
162
163 #define CHAR(c) ((Char)((c)&M_ASCII))
164 #define META(c) ((Char)((c)|M_QUOTE))
165 #define M_ALL META('*')
166 #define M_END META(']')
167 #define M_NOT META('!')
168 #define M_ONE META('?')
169 #define M_RNG META('-')
170 #define M_SET META('[')
171 #define ismeta(c) (((c)&M_QUOTE) != 0)
172
173
174 static int compare(const void *, const void *);
175 static int ci_compare(const void *, const void *);
176 static int g_Ctoc(const Char *, char *, STRLEN);
177 static int g_lstat(Char *, Stat_t *, glob_t *);
178 static DIR *g_opendir(Char *, glob_t *);
179 static Char *g_strchr(Char *, int);
180 static int g_stat(Char *, Stat_t *, glob_t *);
181 static int glob0(const Char *, glob_t *);
182 static int glob1(Char *, Char *, glob_t *, size_t *);
183 static int glob2(Char *, Char *, Char *, Char *, Char *, Char *,
184 glob_t *, size_t *);
185 static int glob3(Char *, Char *, Char *, Char *, Char *, Char *,
186 Char *, Char *, glob_t *, size_t *);
187 static int globextend(const Char *, glob_t *, size_t *);
188 static const Char *
189 globtilde(const Char *, Char *, size_t, glob_t *);
190 static int globexp1(const Char *, glob_t *);
191 static int globexp2(const Char *, const Char *, glob_t *, int *);
192 static int match(Char *, Char *, Char *, int);
193 #ifdef GLOB_DEBUG
194 static void qprintf(const char *, Char *);
195 #endif /* GLOB_DEBUG */
196
197 #ifdef PERL_IMPLICIT_CONTEXT
198 static Direntry_t * my_readdir(DIR*);
199
200 static Direntry_t *
my_readdir(DIR * d)201 my_readdir(DIR *d)
202 {
203 #ifndef NETWARE
204 return PerlDir_read(d);
205 #else
206 return (DIR *)PerlDir_read(d);
207 #endif
208 }
209 #else
210
211 /* ReliantUNIX (OS formerly known as SINIX) defines readdir
212 * in LFS-mode to be a 64-bit version of readdir. */
213
214 # ifdef sinix
215 static Direntry_t * my_readdir(DIR*);
216
217 static Direntry_t *
my_readdir(DIR * d)218 my_readdir(DIR *d)
219 {
220 return readdir(d);
221 }
222 # else
223
224 # define my_readdir readdir
225
226 # endif
227
228 #endif
229
230 #ifdef MACOS_TRADITIONAL
231 #include <Files.h>
232 #include <Types.h>
233 #include <string.h>
234
235 #define NO_UPDIR_ERR 1 /* updir resolving failed */
236
237 static Boolean g_matchVol; /* global variable */
238 static short updir(char *path);
239 static short resolve_updirs(char *new_pattern);
240 static void remove_trColon(char *path);
241 static short glob_mark_Mac(Char *pathbuf, Char *pathend, Char *pathend_last);
242 static OSErr GetVolInfo(short volume, Boolean indexed, FSSpec *spec);
243 static void name_f_FSSpec(StrFileName volname, FSSpec *spec);
244
245 #endif
246
247 int
bsd_glob(const char * pattern,int flags,int (* errfunc)(const char *,int),glob_t * pglob)248 bsd_glob(const char *pattern, int flags,
249 int (*errfunc)(const char *, int), glob_t *pglob)
250 {
251 const U8 *patnext;
252 int c;
253 Char *bufnext, *bufend, patbuf[MAXPATHLEN];
254
255 #ifdef MACOS_TRADITIONAL
256 char *new_pat, *p, *np;
257 int err;
258 size_t len;
259 #endif
260
261 #ifndef MACOS_TRADITIONAL
262 patnext = (U8 *) pattern;
263 #endif
264 /* TODO: GLOB_APPEND / GLOB_DOOFFS aren't supported yet */
265 #if 0
266 if (!(flags & GLOB_APPEND)) {
267 pglob->gl_pathc = 0;
268 pglob->gl_pathv = NULL;
269 if (!(flags & GLOB_DOOFFS))
270 pglob->gl_offs = 0;
271 }
272 #else
273 pglob->gl_pathc = 0;
274 pglob->gl_pathv = NULL;
275 pglob->gl_offs = 0;
276 #endif
277 pglob->gl_flags = flags & ~GLOB_MAGCHAR;
278 pglob->gl_errfunc = errfunc;
279 pglob->gl_matchc = 0;
280
281 bufnext = patbuf;
282 bufend = bufnext + MAXPATHLEN - 1;
283 #ifdef DOSISH
284 /* Nasty hack to treat patterns like "C:*" correctly. In this
285 * case, the * should match any file in the current directory
286 * on the C: drive. However, the glob code does not treat the
287 * colon specially, so it looks for files beginning "C:" in
288 * the current directory. To fix this, change the pattern to
289 * add an explicit "./" at the start (just after the drive
290 * letter and colon - ie change to "C:./").
291 */
292 if (isalpha(pattern[0]) && pattern[1] == ':' &&
293 pattern[2] != BG_SEP && pattern[2] != BG_SEP2 &&
294 bufend - bufnext > 4) {
295 *bufnext++ = pattern[0];
296 *bufnext++ = ':';
297 *bufnext++ = '.';
298 *bufnext++ = BG_SEP;
299 patnext += 2;
300 }
301 #endif
302
303 #ifdef MACOS_TRADITIONAL
304 /* Check if we need to match a volume name (e.g. '*HD:*') */
305 g_matchVol = false;
306 p = (char *) pattern;
307 if (*p != BG_SEP) {
308 p++;
309 while (*p != BG_EOS) {
310 if (*p == BG_SEP) {
311 g_matchVol = true;
312 break;
313 }
314 p++;
315 }
316 }
317
318 /* Transform the pattern:
319 * (a) Resolve updirs, e.g.
320 * '*:t*p::' -> '*:'
321 * ':a*:tmp::::' -> '::'
322 * ':base::t*p:::' -> '::'
323 * '*HD::' -> return 0 (error, quit silently)
324 *
325 * (b) Remove a single trailing ':', unless it's a "match volume only"
326 * pattern like '*HD:'; e.g.
327 * '*:tmp:' -> '*:tmp' but
328 * '*HD:' -> '*HD:'
329 * (If we don't do that, even filenames will have a trailing ':' in
330 * the result.)
331 */
332
333 /* We operate on a copy of the pattern */
334 len = strlen(pattern);
335 New(0, new_pat, len + 1, char);
336 if (new_pat == NULL)
337 return (GLOB_NOSPACE);
338
339 p = (char *) pattern;
340 np = new_pat;
341 while (*np++ = *p++) ;
342
343 /* Resolve updirs ... */
344 err = resolve_updirs(new_pat);
345 if (err) {
346 Safefree(new_pat);
347 /* The pattern is incorrect: tried to move
348 up above the volume root, see above.
349 We quit silently. */
350 return 0;
351 }
352 /* remove trailing colon ... */
353 remove_trColon(new_pat);
354 patnext = (U8 *) new_pat;
355
356 #endif /* MACOS_TRADITIONAL */
357
358 if (flags & GLOB_QUOTE) {
359 /* Protect the quoted characters. */
360 while (bufnext < bufend && (c = *patnext++) != BG_EOS)
361 if (c == BG_QUOTE) {
362 #ifdef DOSISH
363 /* To avoid backslashitis on Win32,
364 * we only treat \ as a quoting character
365 * if it precedes one of the
366 * metacharacters []-{}~\
367 */
368 if ((c = *patnext++) != '[' && c != ']' &&
369 c != '-' && c != '{' && c != '}' &&
370 c != '~' && c != '\\') {
371 #else
372 if ((c = *patnext++) == BG_EOS) {
373 #endif
374 c = BG_QUOTE;
375 --patnext;
376 }
377 *bufnext++ = c | M_PROTECT;
378 } else
379 *bufnext++ = c;
380 } else
381 while (bufnext < bufend && (c = *patnext++) != BG_EOS)
382 *bufnext++ = c;
383 *bufnext = BG_EOS;
384
385 #ifdef MACOS_TRADITIONAL
386 if (flags & GLOB_BRACE)
387 err = globexp1(patbuf, pglob);
388 else
389 err = glob0(patbuf, pglob);
390 Safefree(new_pat);
391 return err;
392 #else
393 if (flags & GLOB_BRACE)
394 return globexp1(patbuf, pglob);
395 else
396 return glob0(patbuf, pglob);
397 #endif
398 }
399
400 /*
401 * Expand recursively a glob {} pattern. When there is no more expansion
402 * invoke the standard globbing routine to glob the rest of the magic
403 * characters
404 */
405 static int
406 globexp1(const Char *pattern, glob_t *pglob)
407 {
408 const Char* ptr = pattern;
409 int rv;
410
411 /* Protect a single {}, for find(1), like csh */
412 if (pattern[0] == BG_LBRACE && pattern[1] == BG_RBRACE && pattern[2] == BG_EOS)
413 return glob0(pattern, pglob);
414
415 while ((ptr = (const Char *) g_strchr((Char *) ptr, BG_LBRACE)) != NULL)
416 if (!globexp2(ptr, pattern, pglob, &rv))
417 return rv;
418
419 return glob0(pattern, pglob);
420 }
421
422
423 /*
424 * Recursive brace globbing helper. Tries to expand a single brace.
425 * If it succeeds then it invokes globexp1 with the new pattern.
426 * If it fails then it tries to glob the rest of the pattern and returns.
427 */
428 static int
429 globexp2(const Char *ptr, const Char *pattern,
430 glob_t *pglob, int *rv)
431 {
432 int i;
433 Char *lm, *ls;
434 const Char *pe, *pm, *pl;
435 Char patbuf[MAXPATHLEN];
436
437 /* copy part up to the brace */
438 for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++)
439 ;
440 *lm = BG_EOS;
441 ls = lm;
442
443 /* Find the balanced brace */
444 for (i = 0, pe = ++ptr; *pe; pe++)
445 if (*pe == BG_LBRACKET) {
446 /* Ignore everything between [] */
447 for (pm = pe++; *pe != BG_RBRACKET && *pe != BG_EOS; pe++)
448 ;
449 if (*pe == BG_EOS) {
450 /*
451 * We could not find a matching BG_RBRACKET.
452 * Ignore and just look for BG_RBRACE
453 */
454 pe = pm;
455 }
456 } else if (*pe == BG_LBRACE)
457 i++;
458 else if (*pe == BG_RBRACE) {
459 if (i == 0)
460 break;
461 i--;
462 }
463
464 /* Non matching braces; just glob the pattern */
465 if (i != 0 || *pe == BG_EOS) {
466 *rv = glob0(patbuf, pglob);
467 return 0;
468 }
469
470 for (i = 0, pl = pm = ptr; pm <= pe; pm++) {
471 switch (*pm) {
472 case BG_LBRACKET:
473 /* Ignore everything between [] */
474 for (pl = pm++; *pm != BG_RBRACKET && *pm != BG_EOS; pm++)
475 ;
476 if (*pm == BG_EOS) {
477 /*
478 * We could not find a matching BG_RBRACKET.
479 * Ignore and just look for BG_RBRACE
480 */
481 pm = pl;
482 }
483 break;
484
485 case BG_LBRACE:
486 i++;
487 break;
488
489 case BG_RBRACE:
490 if (i) {
491 i--;
492 break;
493 }
494 /* FALLTHROUGH */
495 case BG_COMMA:
496 if (i && *pm == BG_COMMA)
497 break;
498 else {
499 /* Append the current string */
500 for (lm = ls; (pl < pm); *lm++ = *pl++)
501 ;
502
503 /*
504 * Append the rest of the pattern after the
505 * closing brace
506 */
507 for (pl = pe + 1; (*lm++ = *pl++) != BG_EOS; )
508 ;
509
510 /* Expand the current pattern */
511 #ifdef GLOB_DEBUG
512 qprintf("globexp2:", patbuf);
513 #endif /* GLOB_DEBUG */
514 *rv = globexp1(patbuf, pglob);
515
516 /* move after the comma, to the next string */
517 pl = pm + 1;
518 }
519 break;
520
521 default:
522 break;
523 }
524 }
525 *rv = 0;
526 return 0;
527 }
528
529
530
531 /*
532 * expand tilde from the passwd file.
533 */
534 static const Char *
535 globtilde(const Char *pattern, Char *patbuf, size_t patbuf_len, glob_t *pglob)
536 {
537 char *h;
538 const Char *p;
539 Char *b, *eb;
540
541 if (*pattern != BG_TILDE || !(pglob->gl_flags & GLOB_TILDE))
542 return pattern;
543
544 /* Copy up to the end of the string or / */
545 eb = &patbuf[patbuf_len - 1];
546 for (p = pattern + 1, h = (char *) patbuf;
547 h < (char*)eb && *p && *p != BG_SLASH; *h++ = (char)*p++)
548 ;
549
550 *h = BG_EOS;
551
552 #if 0
553 if (h == (char *)eb)
554 return what;
555 #endif
556
557 if (((char *) patbuf)[0] == BG_EOS) {
558 /*
559 * handle a plain ~ or ~/ by expanding $HOME
560 * first and then trying the password file
561 */
562 if ((h = getenv("HOME")) == NULL) {
563 #ifdef HAS_PASSWD
564 struct passwd *pwd;
565 if ((pwd = getpwuid(getuid())) == NULL)
566 return pattern;
567 else
568 h = pwd->pw_dir;
569 #else
570 return pattern;
571 #endif
572 }
573 } else {
574 /*
575 * Expand a ~user
576 */
577 #ifdef HAS_PASSWD
578 struct passwd *pwd;
579 if ((pwd = getpwnam((char*) patbuf)) == NULL)
580 return pattern;
581 else
582 h = pwd->pw_dir;
583 #else
584 return pattern;
585 #endif
586 }
587
588 /* Copy the home directory */
589 for (b = patbuf; b < eb && *h; *b++ = *h++)
590 ;
591
592 /* Append the rest of the pattern */
593 while (b < eb && (*b++ = *p++) != BG_EOS)
594 ;
595 *b = BG_EOS;
596
597 return patbuf;
598 }
599
600
601 /*
602 * The main glob() routine: compiles the pattern (optionally processing
603 * quotes), calls glob1() to do the real pattern matching, and finally
604 * sorts the list (unless unsorted operation is requested). Returns 0
605 * if things went well, nonzero if errors occurred. It is not an error
606 * to find no matches.
607 */
608 static int
609 glob0(const Char *pattern, glob_t *pglob)
610 {
611 const Char *qpat, *qpatnext;
612 int c, err, oldflags, oldpathc;
613 Char *bufnext, patbuf[MAXPATHLEN];
614 size_t limit = 0;
615
616 #ifdef MACOS_TRADITIONAL
617 if ( (*pattern == BG_TILDE) && (pglob->gl_flags & GLOB_TILDE) ) {
618 return(globextend(pattern, pglob, &limit));
619 }
620 #endif
621
622 qpat = globtilde(pattern, patbuf, MAXPATHLEN, pglob);
623 qpatnext = qpat;
624 oldflags = pglob->gl_flags;
625 oldpathc = pglob->gl_pathc;
626 bufnext = patbuf;
627
628 /* We don't need to check for buffer overflow any more. */
629 while ((c = *qpatnext++) != BG_EOS) {
630 switch (c) {
631 case BG_LBRACKET:
632 c = *qpatnext;
633 if (c == BG_NOT)
634 ++qpatnext;
635 if (*qpatnext == BG_EOS ||
636 g_strchr((Char *) qpatnext+1, BG_RBRACKET) == NULL) {
637 *bufnext++ = BG_LBRACKET;
638 if (c == BG_NOT)
639 --qpatnext;
640 break;
641 }
642 *bufnext++ = M_SET;
643 if (c == BG_NOT)
644 *bufnext++ = M_NOT;
645 c = *qpatnext++;
646 do {
647 *bufnext++ = CHAR(c);
648 if (*qpatnext == BG_RANGE &&
649 (c = qpatnext[1]) != BG_RBRACKET) {
650 *bufnext++ = M_RNG;
651 *bufnext++ = CHAR(c);
652 qpatnext += 2;
653 }
654 } while ((c = *qpatnext++) != BG_RBRACKET);
655 pglob->gl_flags |= GLOB_MAGCHAR;
656 *bufnext++ = M_END;
657 break;
658 case BG_QUESTION:
659 pglob->gl_flags |= GLOB_MAGCHAR;
660 *bufnext++ = M_ONE;
661 break;
662 case BG_STAR:
663 pglob->gl_flags |= GLOB_MAGCHAR;
664 /* collapse adjacent stars to one,
665 * to avoid exponential behavior
666 */
667 if (bufnext == patbuf || bufnext[-1] != M_ALL)
668 *bufnext++ = M_ALL;
669 break;
670 default:
671 *bufnext++ = CHAR(c);
672 break;
673 }
674 }
675 *bufnext = BG_EOS;
676 #ifdef GLOB_DEBUG
677 qprintf("glob0:", patbuf);
678 #endif /* GLOB_DEBUG */
679
680 if ((err = glob1(patbuf, patbuf+MAXPATHLEN-1, pglob, &limit)) != 0) {
681 pglob->gl_flags = oldflags;
682 return(err);
683 }
684
685 /*
686 * If there was no match we are going to append the pattern
687 * if GLOB_NOCHECK was specified or if GLOB_NOMAGIC was specified
688 * and the pattern did not contain any magic characters
689 * GLOB_NOMAGIC is there just for compatibility with csh.
690 */
691 if (pglob->gl_pathc == oldpathc &&
692 ((pglob->gl_flags & GLOB_NOCHECK) ||
693 ((pglob->gl_flags & GLOB_NOMAGIC) &&
694 !(pglob->gl_flags & GLOB_MAGCHAR))))
695 {
696 #ifdef GLOB_DEBUG
697 printf("calling globextend from glob0\n");
698 #endif /* GLOB_DEBUG */
699 pglob->gl_flags = oldflags;
700 return(globextend(qpat, pglob, &limit));
701 }
702 else if (!(pglob->gl_flags & GLOB_NOSORT))
703 qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc,
704 pglob->gl_pathc - oldpathc, sizeof(char *),
705 (pglob->gl_flags & (GLOB_ALPHASORT|GLOB_NOCASE))
706 ? ci_compare : compare);
707 pglob->gl_flags = oldflags;
708 return(0);
709 }
710
711 static int
712 ci_compare(const void *p, const void *q)
713 {
714 const char *pp = *(const char **)p;
715 const char *qq = *(const char **)q;
716 int ci;
717 while (*pp && *qq) {
718 if (toLOWER(*pp) != toLOWER(*qq))
719 break;
720 ++pp;
721 ++qq;
722 }
723 ci = toLOWER(*pp) - toLOWER(*qq);
724 if (ci == 0)
725 return compare(p, q);
726 return ci;
727 }
728
729 static int
730 compare(const void *p, const void *q)
731 {
732 return(strcmp(*(char **)p, *(char **)q));
733 }
734
735 static int
736 glob1(Char *pattern, Char *pattern_last, glob_t *pglob, size_t *limitp)
737 {
738 Char pathbuf[MAXPATHLEN];
739
740 /* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */
741 if (*pattern == BG_EOS)
742 return(0);
743 return(glob2(pathbuf, pathbuf+MAXPATHLEN-1,
744 pathbuf, pathbuf+MAXPATHLEN-1,
745 pattern, pattern_last, pglob, limitp));
746 }
747
748 /*
749 * The functions glob2 and glob3 are mutually recursive; there is one level
750 * of recursion for each segment in the pattern that contains one or more
751 * meta characters.
752 */
753 static int
754 glob2(Char *pathbuf, Char *pathbuf_last, Char *pathend, Char *pathend_last,
755 Char *pattern, Char *pattern_last, glob_t *pglob, size_t *limitp)
756 {
757 Stat_t sb;
758 Char *p, *q;
759 int anymeta;
760
761 /*
762 * Loop over pattern segments until end of pattern or until
763 * segment with meta character found.
764 */
765 for (anymeta = 0;;) {
766 if (*pattern == BG_EOS) { /* End of pattern? */
767 *pathend = BG_EOS;
768 if (g_lstat(pathbuf, &sb, pglob))
769 return(0);
770
771 if (((pglob->gl_flags & GLOB_MARK) &&
772 pathend[-1] != BG_SEP
773 #ifdef DOSISH
774 && pathend[-1] != BG_SEP2
775 #endif
776 ) && (S_ISDIR(sb.st_mode) ||
777 (S_ISLNK(sb.st_mode) &&
778 (g_stat(pathbuf, &sb, pglob) == 0) &&
779 S_ISDIR(sb.st_mode)))) {
780 #ifdef MACOS_TRADITIONAL
781 short err;
782 err = glob_mark_Mac(pathbuf, pathend, pathend_last);
783 if (err)
784 return (err);
785 #else
786 if (pathend+1 > pathend_last)
787 return (1);
788 *pathend++ = BG_SEP;
789 *pathend = BG_EOS;
790 #endif
791 }
792 ++pglob->gl_matchc;
793 #ifdef GLOB_DEBUG
794 printf("calling globextend from glob2\n");
795 #endif /* GLOB_DEBUG */
796 return(globextend(pathbuf, pglob, limitp));
797 }
798
799 /* Find end of next segment, copy tentatively to pathend. */
800 q = pathend;
801 p = pattern;
802 while (*p != BG_EOS && *p != BG_SEP
803 #ifdef DOSISH
804 && *p != BG_SEP2
805 #endif
806 ) {
807 if (ismeta(*p))
808 anymeta = 1;
809 if (q+1 > pathend_last)
810 return (1);
811 *q++ = *p++;
812 }
813
814 if (!anymeta) { /* No expansion, do next segment. */
815 pathend = q;
816 pattern = p;
817 while (*pattern == BG_SEP
818 #ifdef DOSISH
819 || *pattern == BG_SEP2
820 #endif
821 ) {
822 if (pathend+1 > pathend_last)
823 return (1);
824 *pathend++ = *pattern++;
825 }
826 } else
827 /* Need expansion, recurse. */
828 return(glob3(pathbuf, pathbuf_last, pathend,
829 pathend_last, pattern, pattern_last,
830 p, pattern_last, pglob, limitp));
831 }
832 /* NOTREACHED */
833 }
834
835 static int
836 glob3(Char *pathbuf, Char *pathbuf_last, Char *pathend, Char *pathend_last,
837 Char *pattern, Char *pattern_last,
838 Char *restpattern, Char *restpattern_last, glob_t *pglob, size_t *limitp)
839 {
840 register Direntry_t *dp;
841 DIR *dirp;
842 int err;
843 int nocase;
844 char buf[MAXPATHLEN];
845
846 /*
847 * The readdirfunc declaration can't be prototyped, because it is
848 * assigned, below, to two functions which are prototyped in glob.h
849 * and dirent.h as taking pointers to differently typed opaque
850 * structures.
851 */
852 Direntry_t *(*readdirfunc)(DIR*);
853
854 if (pathend > pathend_last)
855 return (1);
856 *pathend = BG_EOS;
857 errno = 0;
858
859 #ifdef VMS
860 {
861 Char *q = pathend;
862 if (q - pathbuf > 5) {
863 q -= 5;
864 if (q[0] == '.' &&
865 tolower(q[1]) == 'd' && tolower(q[2]) == 'i' &&
866 tolower(q[3]) == 'r' && q[4] == '/')
867 {
868 q[0] = '/';
869 q[1] = BG_EOS;
870 pathend = q+1;
871 }
872 }
873 }
874 #endif
875
876 #ifdef MACOS_TRADITIONAL
877 if ((!*pathbuf) && (g_matchVol)) {
878 FSSpec spec;
879 short index;
880 StrFileName vol_name; /* unsigned char[64] on MacOS */
881
882 err = 0;
883 nocase = ((pglob->gl_flags & GLOB_NOCASE) != 0);
884
885 /* Get and match a list of volume names */
886 for (index = 0; !GetVolInfo(index+1, true, &spec); ++index) {
887 register U8 *sc;
888 register Char *dc;
889
890 name_f_FSSpec(vol_name, &spec);
891
892 /* Initial BG_DOT must be matched literally. */
893 if (*vol_name == BG_DOT && *pattern != BG_DOT)
894 continue;
895 dc = pathend;
896 sc = (U8 *) vol_name;
897 while (dc < pathend_last && (*dc++ = *sc++) != BG_EOS)
898 ;
899 if (dc >= pathend_last) {
900 *dc = BG_EOS;
901 err = 1;
902 break;
903 }
904
905 if (!match(pathend, pattern, restpattern, nocase)) {
906 *pathend = BG_EOS;
907 continue;
908 }
909 err = glob2(pathbuf, pathbuf_last, --dc, pathend_last,
910 restpattern, restpattern_last, pglob, limitp);
911 if (err)
912 break;
913 }
914 return(err);
915
916 } else { /* open dir */
917 #endif /* MACOS_TRADITIONAL */
918
919 if ((dirp = g_opendir(pathbuf, pglob)) == NULL) {
920 /* TODO: don't call for ENOENT or ENOTDIR? */
921 if (pglob->gl_errfunc) {
922 if (g_Ctoc(pathbuf, buf, sizeof(buf)))
923 return (GLOB_ABEND);
924 if (pglob->gl_errfunc(buf, errno) ||
925 (pglob->gl_flags & GLOB_ERR))
926 return (GLOB_ABEND);
927 }
928 return(0);
929 }
930
931 err = 0;
932 nocase = ((pglob->gl_flags & GLOB_NOCASE) != 0);
933
934 /* Search directory for matching names. */
935 if (pglob->gl_flags & GLOB_ALTDIRFUNC)
936 readdirfunc = (Direntry_t *(*)(DIR *))pglob->gl_readdir;
937 else
938 readdirfunc = my_readdir;
939 while ((dp = (*readdirfunc)(dirp))) {
940 register U8 *sc;
941 register Char *dc;
942
943 /* Initial BG_DOT must be matched literally. */
944 if (dp->d_name[0] == BG_DOT && *pattern != BG_DOT)
945 continue;
946 dc = pathend;
947 sc = (U8 *) dp->d_name;
948 while (dc < pathend_last && (*dc++ = *sc++) != BG_EOS)
949 ;
950 if (dc >= pathend_last) {
951 *dc = BG_EOS;
952 err = 1;
953 break;
954 }
955
956 if (!match(pathend, pattern, restpattern, nocase)) {
957 *pathend = BG_EOS;
958 continue;
959 }
960 err = glob2(pathbuf, pathbuf_last, --dc, pathend_last,
961 restpattern, restpattern_last, pglob, limitp);
962 if (err)
963 break;
964 }
965
966 if (pglob->gl_flags & GLOB_ALTDIRFUNC)
967 (*pglob->gl_closedir)(dirp);
968 else
969 PerlDir_close(dirp);
970 return(err);
971
972 #ifdef MACOS_TRADITIONAL
973 }
974 #endif
975 }
976
977
978 /*
979 * Extend the gl_pathv member of a glob_t structure to accomodate a new item,
980 * add the new item, and update gl_pathc.
981 *
982 * This assumes the BSD realloc, which only copies the block when its size
983 * crosses a power-of-two boundary; for v7 realloc, this would cause quadratic
984 * behavior.
985 *
986 * Return 0 if new item added, error code if memory couldn't be allocated.
987 *
988 * Invariant of the glob_t structure:
989 * Either gl_pathc is zero and gl_pathv is NULL; or gl_pathc > 0 and
990 * gl_pathv points to (gl_offs + gl_pathc + 1) items.
991 */
992 static int
993 globextend(const Char *path, glob_t *pglob, size_t *limitp)
994 {
995 register char **pathv;
996 register int i;
997 STRLEN newsize, len;
998 char *copy;
999 const Char *p;
1000
1001 #ifdef GLOB_DEBUG
1002 printf("Adding ");
1003 for (p = path; *p; p++)
1004 (void)printf("%c", CHAR(*p));
1005 printf("\n");
1006 #endif /* GLOB_DEBUG */
1007
1008 newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs);
1009 if (pglob->gl_pathv)
1010 pathv = Renew(pglob->gl_pathv,newsize,char*);
1011 else
1012 New(0,pathv,newsize,char*);
1013 if (pathv == NULL) {
1014 if (pglob->gl_pathv) {
1015 Safefree(pglob->gl_pathv);
1016 pglob->gl_pathv = NULL;
1017 }
1018 return(GLOB_NOSPACE);
1019 }
1020
1021 if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) {
1022 /* first time around -- clear initial gl_offs items */
1023 pathv += pglob->gl_offs;
1024 for (i = pglob->gl_offs; --i >= 0; )
1025 *--pathv = NULL;
1026 }
1027 pglob->gl_pathv = pathv;
1028
1029 for (p = path; *p++;)
1030 ;
1031 len = (STRLEN)(p - path);
1032 *limitp += len;
1033 New(0, copy, p-path, char);
1034 if (copy != NULL) {
1035 if (g_Ctoc(path, copy, len)) {
1036 Safefree(copy);
1037 return(GLOB_NOSPACE);
1038 }
1039 pathv[pglob->gl_offs + pglob->gl_pathc++] = copy;
1040 }
1041 pathv[pglob->gl_offs + pglob->gl_pathc] = NULL;
1042
1043 if ((pglob->gl_flags & GLOB_LIMIT) &&
1044 newsize + *limitp >= ARG_MAX) {
1045 errno = 0;
1046 return(GLOB_NOSPACE);
1047 }
1048
1049 return(copy == NULL ? GLOB_NOSPACE : 0);
1050 }
1051
1052
1053 /*
1054 * pattern matching function for filenames. Each occurrence of the *
1055 * pattern causes a recursion level.
1056 */
1057 static int
1058 match(register Char *name, register Char *pat, register Char *patend, int nocase)
1059 {
1060 int ok, negate_range;
1061 Char c, k;
1062
1063 while (pat < patend) {
1064 c = *pat++;
1065 switch (c & M_MASK) {
1066 case M_ALL:
1067 if (pat == patend)
1068 return(1);
1069 do
1070 if (match(name, pat, patend, nocase))
1071 return(1);
1072 while (*name++ != BG_EOS)
1073 ;
1074 return(0);
1075 case M_ONE:
1076 if (*name++ == BG_EOS)
1077 return(0);
1078 break;
1079 case M_SET:
1080 ok = 0;
1081 if ((k = *name++) == BG_EOS)
1082 return(0);
1083 if ((negate_range = ((*pat & M_MASK) == M_NOT)) != BG_EOS)
1084 ++pat;
1085 while (((c = *pat++) & M_MASK) != M_END)
1086 if ((*pat & M_MASK) == M_RNG) {
1087 if (nocase) {
1088 if (tolower(c) <= tolower(k) && tolower(k) <= tolower(pat[1]))
1089 ok = 1;
1090 } else {
1091 if (c <= k && k <= pat[1])
1092 ok = 1;
1093 }
1094 pat += 2;
1095 } else if (nocase ? (tolower(c) == tolower(k)) : (c == k))
1096 ok = 1;
1097 if (ok == negate_range)
1098 return(0);
1099 break;
1100 default:
1101 k = *name++;
1102 if (nocase ? (tolower(k) != tolower(c)) : (k != c))
1103 return(0);
1104 break;
1105 }
1106 }
1107 return(*name == BG_EOS);
1108 }
1109
1110 /* Free allocated data belonging to a glob_t structure. */
1111 void
1112 bsd_globfree(glob_t *pglob)
1113 {
1114 register int i;
1115 register char **pp;
1116
1117 if (pglob->gl_pathv != NULL) {
1118 pp = pglob->gl_pathv + pglob->gl_offs;
1119 for (i = pglob->gl_pathc; i--; ++pp)
1120 if (*pp)
1121 Safefree(*pp);
1122 Safefree(pglob->gl_pathv);
1123 pglob->gl_pathv = NULL;
1124 }
1125 }
1126
1127 static DIR *
1128 g_opendir(register Char *str, glob_t *pglob)
1129 {
1130 char buf[MAXPATHLEN];
1131
1132 if (!*str) {
1133 #ifdef MACOS_TRADITIONAL
1134 strcpy(buf, ":");
1135 #else
1136 strcpy(buf, ".");
1137 #endif
1138 } else {
1139 if (g_Ctoc(str, buf, sizeof(buf)))
1140 return(NULL);
1141 }
1142
1143 if (pglob->gl_flags & GLOB_ALTDIRFUNC)
1144 return((*pglob->gl_opendir)(buf));
1145
1146 return(PerlDir_open(buf));
1147 }
1148
1149 static int
1150 g_lstat(register Char *fn, Stat_t *sb, glob_t *pglob)
1151 {
1152 char buf[MAXPATHLEN];
1153
1154 if (g_Ctoc(fn, buf, sizeof(buf)))
1155 return(-1);
1156 if (pglob->gl_flags & GLOB_ALTDIRFUNC)
1157 return((*pglob->gl_lstat)(buf, sb));
1158 #ifdef HAS_LSTAT
1159 return(PerlLIO_lstat(buf, sb));
1160 #else
1161 return(PerlLIO_stat(buf, sb));
1162 #endif /* HAS_LSTAT */
1163 }
1164
1165 static int
1166 g_stat(register Char *fn, Stat_t *sb, glob_t *pglob)
1167 {
1168 char buf[MAXPATHLEN];
1169
1170 if (g_Ctoc(fn, buf, sizeof(buf)))
1171 return(-1);
1172 if (pglob->gl_flags & GLOB_ALTDIRFUNC)
1173 return((*pglob->gl_stat)(buf, sb));
1174 return(PerlLIO_stat(buf, sb));
1175 }
1176
1177 static Char *
1178 g_strchr(Char *str, int ch)
1179 {
1180 do {
1181 if (*str == ch)
1182 return (str);
1183 } while (*str++);
1184 return (NULL);
1185 }
1186
1187 static int
1188 g_Ctoc(register const Char *str, char *buf, STRLEN len)
1189 {
1190 while (len--) {
1191 if ((*buf++ = (char)*str++) == BG_EOS)
1192 return (0);
1193 }
1194 return (1);
1195 }
1196
1197 #ifdef GLOB_DEBUG
1198 static void
1199 qprintf(const char *str, register Char *s)
1200 {
1201 register Char *p;
1202
1203 (void)printf("%s:\n", str);
1204 for (p = s; *p; p++)
1205 (void)printf("%c", CHAR(*p));
1206 (void)printf("\n");
1207 for (p = s; *p; p++)
1208 (void)printf("%c", *p & M_PROTECT ? '"' : ' ');
1209 (void)printf("\n");
1210 for (p = s; *p; p++)
1211 (void)printf("%c", ismeta(*p) ? '_' : ' ');
1212 (void)printf("\n");
1213 }
1214 #endif /* GLOB_DEBUG */
1215
1216
1217 #ifdef MACOS_TRADITIONAL
1218
1219 /* Replace the last occurrence of the pattern ":[^:]+::", e.g. ":lib::",
1220 with a single ':', if possible. It is not an error, if the pattern
1221 doesn't match (we return -1), but if there are two consecutive colons
1222 '::', there must be a preceding ':[^:]+'. Hence, a volume path like
1223 "HD::" is considered to be an error (we return 1), that is, it can't
1224 be resolved. We return 0 on success.
1225 */
1226
1227 static short
1228 updir(char *path)
1229 {
1230 char *pb, *pe, *lastchar;
1231 char *bgn_mark, *end_mark;
1232 char *f, *m, *b; /* front, middle, back */
1233 size_t len;
1234
1235 len = strlen(path);
1236 lastchar = path + (len-1);
1237 b = lastchar;
1238 m = lastchar-1;
1239 f = lastchar-2;
1240
1241 /* find a '[^:]::' (e.g. b::) pattern ... */
1242 while ( !( (*f != BG_SEP) && (*m == BG_SEP) && (*b == BG_SEP) )
1243 && (f >= path)) {
1244 f--;
1245 m--;
1246 b--;
1247 }
1248
1249 if (f < path) { /* no (more) match */
1250 return -1;
1251 }
1252
1253 end_mark = b;
1254
1255 /* ... and now find its preceding colon ':' */
1256 while ((*f != BG_SEP) && (f >= path)) {
1257 f--;
1258 }
1259 if (f < path) {
1260 /* No preceding colon found, must be a
1261 volume path. We can't move up the
1262 tree and that's an error */
1263 return 1;
1264 }
1265 bgn_mark = f;
1266
1267 /* Shrink path, i.e. exclude all characters between
1268 bgn_mark and end_mark */
1269
1270 pb = bgn_mark;
1271 pe = end_mark;
1272 while (*pb++ = *pe++) ;
1273 return 0;
1274 }
1275
1276
1277 /* Resolve all updirs in pattern. */
1278
1279 static short
1280 resolve_updirs(char *new_pattern)
1281 {
1282 short err;
1283
1284 do {
1285 err = updir(new_pattern);
1286 } while (!err);
1287 if (err == 1) {
1288 return NO_UPDIR_ERR;
1289 }
1290 return 0;
1291 }
1292
1293
1294 /* Remove a trailing colon from the path, but only if it's
1295 not a volume path (e.g. HD:) and not a path consisting
1296 solely of colons. */
1297
1298 static void
1299 remove_trColon(char *path)
1300 {
1301 char *lastchar, *lc;
1302
1303 /* if path matches the pattern /:[^:]+:$/, we can
1304 remove the trailing ':' */
1305
1306 lc = lastchar = path + (strlen(path) - 1);
1307 if (*lastchar == BG_SEP) {
1308 /* there's a trailing ':', there must be at least
1309 one preceding char != ':' and a preceding ':' */
1310 lc--;
1311 if ((*lc != BG_SEP) && (lc >= path)) {
1312 lc--;
1313 } else {
1314 return;
1315 }
1316 while ((*lc != BG_SEP) && (lc >= path)) {
1317 lc--;
1318 }
1319 if (lc >= path) {
1320 /* ... there's a preceding ':', we remove
1321 the trailing colon */
1322 *lastchar = BG_EOS;
1323 }
1324 }
1325 }
1326
1327
1328 /* With the GLOB_MARK flag on, we append a colon, if pathbuf
1329 is a directory. If the directory name contains no colons,
1330 e.g. 'lib', we can't simply append a ':', since this (e.g.
1331 'lib:') is not a valid (relative) path on Mac OS. Instead,
1332 we add a leading _and_ trailing ':'. */
1333
1334 static short
1335 glob_mark_Mac(Char *pathbuf, Char *pathend, Char *pathend_last)
1336 {
1337 Char *p, *pe;
1338 Boolean is_file = true;
1339
1340 /* check if pathbuf contains a ':',
1341 i.e. is not a file name */
1342 p = pathbuf;
1343 while (*p != BG_EOS) {
1344 if (*p == BG_SEP) {
1345 is_file = false;
1346 break;
1347 }
1348 p++;
1349 }
1350
1351 if (is_file) {
1352 if (pathend+2 > pathend_last) {
1353 return (1);
1354 }
1355 /* right shift one char */
1356 pe = p = pathend;
1357 p--;
1358 pathend++;
1359 while (p >= pathbuf) {
1360 *pe-- = *p--;
1361 }
1362 /* first char becomes a colon */
1363 *pathbuf = BG_SEP;
1364 /* append a colon */
1365 *pathend++ = BG_SEP;
1366 *pathend = BG_EOS;
1367
1368 } else {
1369 if (pathend+1 > pathend_last) {
1370 return (1);
1371 }
1372 *pathend++ = BG_SEP;
1373 *pathend = BG_EOS;
1374 }
1375 return 0;
1376 }
1377
1378
1379 /* Return a FSSpec record for the specified volume
1380 (borrowed from MacPerl.xs). */
1381
1382 static OSErr
1383 GetVolInfo(short volume, Boolean indexed, FSSpec* spec)
1384 {
1385 OSErr err; /* OSErr: 16-bit integer */
1386 HParamBlockRec pb;
1387
1388 pb.volumeParam.ioNamePtr = spec->name;
1389 pb.volumeParam.ioVRefNum = indexed ? 0 : volume;
1390 pb.volumeParam.ioVolIndex = indexed ? volume : 0;
1391
1392 if (err = PBHGetVInfoSync(&pb))
1393 return err;
1394
1395 spec->vRefNum = pb.volumeParam.ioVRefNum;
1396 spec->parID = 1;
1397
1398 return noErr; /* 0 */
1399 }
1400
1401 /* Extract a C name from a FSSpec. Note that there are
1402 no leading or trailing colons. */
1403
1404 static void
1405 name_f_FSSpec(StrFileName name, FSSpec *spec)
1406 {
1407 unsigned char *nc;
1408 const short len = spec->name[0];
1409 short i;
1410
1411 /* FSSpec.name is a Pascal string,
1412 convert it to C ... */
1413 nc = name;
1414 for (i=1; i<=len; i++) {
1415 *nc++ = spec->name[i];
1416 }
1417 *nc = BG_EOS;
1418 }
1419
1420 #endif /* MACOS_TRADITIONAL */
1421