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d614a753 | 1 | /* Copyright (C) 1991-2020 Free Software Foundation, Inc. |
41bdb6e2 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
41bdb6e2 AJ |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
28f540f4 | 8 | |
41bdb6e2 | 9 | The GNU C Library is distributed in the hope that it will be useful, |
47707456 UD |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 | 17 | |
49a0ba27 | 18 | #include <glob.h> |
97aa195c | 19 | |
28f540f4 RM |
20 | #include <errno.h> |
21 | #include <sys/types.h> | |
bf3ccd1a | 22 | #include <sys/stat.h> |
5171f307 | 23 | #include <stdbool.h> |
49a0ba27 | 24 | #include <stddef.h> |
5171f307 | 25 | #include <stdint.h> |
5ae9d168 | 26 | #include <assert.h> |
c66c9082 | 27 | #include <unistd.h> |
5ae9d168 | 28 | |
c66c9082 AZ |
29 | #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__ |
30 | # define WINDOWS32 | |
28f540f4 RM |
31 | #endif |
32 | ||
c66c9082 AZ |
33 | #ifndef WINDOWS32 |
34 | # include <pwd.h> | |
90bb2039 UD |
35 | #endif |
36 | ||
49a0ba27 | 37 | #include <errno.h> |
c66c9082 | 38 | #include <dirent.h> |
49a0ba27 RM |
39 | #include <stdlib.h> |
40 | #include <string.h> | |
49a0ba27 | 41 | #include <alloca.h> |
bf3ccd1a | 42 | |
50304ef0 | 43 | #ifdef _LIBC |
c3966b88 | 44 | # undef strdup |
c9243dac | 45 | # define strdup(str) __strdup (str) |
50304ef0 UD |
46 | # define sysconf(id) __sysconf (id) |
47 | # define closedir(dir) __closedir (dir) | |
48 | # define opendir(name) __opendir (name) | |
2958e6cc | 49 | # define readdir(str) __readdir64 (str) |
ec986e23 | 50 | # define getpwnam_r(name, bufp, buf, len, res) \ |
c66c9082 | 51 | __getpwnam_r (name, bufp, buf, len, res) |
49a0ba27 | 52 | # define struct_stat64 struct stat64 |
c66c9082 | 53 | # define FLEXIBLE_ARRAY_MEMBER |
ccf970c7 | 54 | # include <shlib-compat.h> |
49a0ba27 | 55 | #else /* !_LIBC */ |
ccf970c7 | 56 | # define __glob glob |
c66c9082 | 57 | # define __getlogin_r(buf, len) getlogin_r (buf, len) |
5554304f | 58 | # define __lstat64(fname, buf) lstat (fname, buf) |
c66c9082 | 59 | # define __stat64(fname, buf) stat (fname, buf) |
c66c9082 AZ |
60 | # define struct_stat64 struct stat |
61 | # ifndef __MVS__ | |
62 | # define __alloca alloca | |
63 | # endif | |
64 | # define __readdir readdir | |
65 | # define COMPILE_GLOB64 | |
49a0ba27 | 66 | #endif /* _LIBC */ |
50304ef0 | 67 | |
28f540f4 RM |
68 | #include <fnmatch.h> |
69 | ||
c66c9082 AZ |
70 | #include <flexmember.h> |
71 | #include <glob_internal.h> | |
5a79f975 | 72 | #include <scratch_buffer.h> |
28f540f4 | 73 | \f |
e833b53f | 74 | static const char *next_brace_sub (const char *begin, int flags) __THROWNL; |
60f0e64b | 75 | |
c66c9082 AZ |
76 | typedef uint_fast8_t dirent_type; |
77 | ||
78 | #if !defined _LIBC && !defined HAVE_STRUCT_DIRENT_D_TYPE | |
79 | /* Any distinct values will do here. | |
80 | Undef any existing macros out of the way. */ | |
81 | # undef DT_UNKNOWN | |
82 | # undef DT_DIR | |
83 | # undef DT_LNK | |
84 | # define DT_UNKNOWN 0 | |
85 | # define DT_DIR 1 | |
86 | # define DT_LNK 2 | |
87 | #endif | |
88 | ||
5171f307 FW |
89 | /* A representation of a directory entry which does not depend on the |
90 | layout of struct dirent, or the size of ino_t. */ | |
91 | struct readdir_result | |
92 | { | |
93 | const char *name; | |
c66c9082 AZ |
94 | #if defined _DIRENT_HAVE_D_TYPE || defined HAVE_STRUCT_DIRENT_D_TYPE |
95 | dirent_type type; | |
96 | #endif | |
5171f307 FW |
97 | }; |
98 | ||
c66c9082 AZ |
99 | /* Initialize and return type member of struct readdir_result. */ |
100 | static dirent_type | |
101 | readdir_result_type (struct readdir_result d) | |
5171f307 | 102 | { |
c66c9082 AZ |
103 | #if defined _DIRENT_HAVE_D_TYPE || defined HAVE_STRUCT_DIRENT_D_TYPE |
104 | # define D_TYPE_TO_RESULT(source) (source)->d_type, | |
105 | return d.type; | |
106 | #else | |
107 | # define D_TYPE_TO_RESULT(source) | |
108 | return DT_UNKNOWN; | |
109 | #endif | |
5171f307 FW |
110 | } |
111 | ||
5171f307 FW |
112 | /* Construct an initializer for a struct readdir_result object from a |
113 | struct dirent *. No copy of the name is made. */ | |
114 | #define READDIR_RESULT_INITIALIZER(source) \ | |
115 | { \ | |
116 | source->d_name, \ | |
117 | D_TYPE_TO_RESULT (source) \ | |
5171f307 FW |
118 | } |
119 | ||
5171f307 FW |
120 | /* Call gl_readdir on STREAM. This macro can be overridden to reduce |
121 | type safety if an old interface version needs to be supported. */ | |
122 | #ifndef GL_READDIR | |
123 | # define GL_READDIR(pglob, stream) ((pglob)->gl_readdir (stream)) | |
124 | #endif | |
125 | ||
126 | /* Extract name and type from directory entry. No copy of the name is | |
127 | made. If SOURCE is NULL, result name is NULL. Keep in sync with | |
128 | convert_dirent64 below. */ | |
129 | static struct readdir_result | |
130 | convert_dirent (const struct dirent *source) | |
131 | { | |
132 | if (source == NULL) | |
133 | { | |
134 | struct readdir_result result = { NULL, }; | |
135 | return result; | |
136 | } | |
137 | struct readdir_result result = READDIR_RESULT_INITIALIZER (source); | |
138 | return result; | |
139 | } | |
140 | ||
141 | #ifndef COMPILE_GLOB64 | |
142 | /* Like convert_dirent, but works on struct dirent64 instead. Keep in | |
143 | sync with convert_dirent above. */ | |
144 | static struct readdir_result | |
145 | convert_dirent64 (const struct dirent64 *source) | |
146 | { | |
147 | if (source == NULL) | |
148 | { | |
149 | struct readdir_result result = { NULL, }; | |
150 | return result; | |
151 | } | |
152 | struct readdir_result result = READDIR_RESULT_INITIALIZER (source); | |
153 | return result; | |
154 | } | |
155 | #endif | |
156 | ||
c66c9082 AZ |
157 | #ifndef _LIBC |
158 | /* The results of opendir() in this file are not used with dirfd and fchdir, | |
159 | and we do not leak fds to any single-threaded code that could use stdio, | |
160 | therefore save some unnecessary recursion in fchdir.c and opendir_safer.c. | |
161 | FIXME - if the kernel ever adds support for multi-thread safety for | |
162 | avoiding standard fds, then we should use opendir_safer. */ | |
163 | # ifdef GNULIB_defined_opendir | |
164 | # undef opendir | |
165 | # endif | |
166 | # ifdef GNULIB_defined_closedir | |
167 | # undef closedir | |
168 | # endif | |
5171f307 | 169 | |
c66c9082 AZ |
170 | /* Just use malloc. */ |
171 | # define __libc_use_alloca(n) false | |
172 | # define alloca_account(len, avar) ((void) (len), (void) (avar), (void *) 0) | |
173 | # define extend_alloca_account(buf, len, newlen, avar) \ | |
174 | ((void) (buf), (void) (len), (void) (newlen), (void) (avar), (void *) 0) | |
05f135ba UD |
175 | #endif |
176 | ||
ccf970c7 AZ |
177 | static int |
178 | glob_lstat (glob_t *pglob, int flags, const char *fullname) | |
179 | { | |
180 | /* Use on glob-lstat-compat.c to provide a compat symbol which does not | |
181 | use lstat / gl_lstat. */ | |
182 | #ifdef GLOB_NO_LSTAT | |
183 | # define GL_LSTAT gl_stat | |
184 | # define LSTAT64 __stat64 | |
185 | #else | |
186 | # define GL_LSTAT gl_lstat | |
187 | # define LSTAT64 __lstat64 | |
188 | #endif | |
189 | ||
190 | union | |
191 | { | |
192 | struct stat st; | |
193 | struct_stat64 st64; | |
194 | } ust; | |
195 | return (__glibc_unlikely (flags & GLOB_ALTDIRFUNC) | |
196 | ? pglob->GL_LSTAT (fullname, &ust.st) | |
197 | : LSTAT64 (fullname, &ust.st64)); | |
198 | } | |
199 | ||
c66c9082 AZ |
200 | /* Set *R = A + B. Return true if the answer is mathematically |
201 | incorrect due to overflow; in this case, *R is the low order | |
202 | bits of the correct answer. */ | |
203 | ||
204 | static bool | |
205 | size_add_wrapv (size_t a, size_t b, size_t *r) | |
206 | { | |
207 | #if 5 <= __GNUC__ && !defined __ICC | |
208 | return __builtin_add_overflow (a, b, r); | |
209 | #else | |
210 | *r = a + b; | |
211 | return *r < a; | |
212 | #endif | |
213 | } | |
214 | ||
215 | static bool | |
216 | glob_use_alloca (size_t alloca_used, size_t len) | |
217 | { | |
218 | size_t size; | |
219 | return (!size_add_wrapv (alloca_used, len, &size) | |
220 | && __libc_use_alloca (size)); | |
221 | } | |
222 | ||
79937577 UD |
223 | static int glob_in_dir (const char *pattern, const char *directory, |
224 | int flags, int (*errfunc) (const char *, int), | |
f2962a71 | 225 | glob_t *pglob, size_t alloca_used); |
e833b53f EB |
226 | static int prefix_array (const char *prefix, char **array, size_t n) __THROWNL; |
227 | static int collated_compare (const void *, const void *) __THROWNL; | |
28f540f4 | 228 | |
5ae9d168 | 229 | |
5554304f AZ |
230 | /* Return true if FILENAME is a directory or a symbolic link to a directory. |
231 | Use FLAGS and PGLOB to resolve the filename. */ | |
232 | static bool | |
233 | is_dir (char const *filename, int flags, glob_t const *pglob) | |
234 | { | |
235 | struct stat st; | |
236 | struct_stat64 st64; | |
237 | return (__glibc_unlikely (flags & GLOB_ALTDIRFUNC) | |
238 | ? pglob->gl_stat (filename, &st) == 0 && S_ISDIR (st.st_mode) | |
239 | : __stat64 (filename, &st64) == 0 && S_ISDIR (st64.st_mode)); | |
240 | } | |
241 | ||
98d2ca3d UD |
242 | /* Find the end of the sub-pattern in a brace expression. */ |
243 | static const char * | |
49a0ba27 | 244 | next_brace_sub (const char *cp, int flags) |
5ae9d168 | 245 | { |
b87c4b24 | 246 | size_t depth = 0; |
98d2ca3d UD |
247 | while (*cp != '\0') |
248 | if ((flags & GLOB_NOESCAPE) == 0 && *cp == '\\') | |
249 | { | |
250 | if (*++cp == '\0') | |
251 | break; | |
252 | ++cp; | |
253 | } | |
254 | else | |
255 | { | |
256 | if ((*cp == '}' && depth-- == 0) || (*cp == ',' && depth == 0)) | |
257 | break; | |
258 | ||
259 | if (*cp++ == '{') | |
260 | depth++; | |
261 | } | |
262 | ||
638670cd | 263 | return *cp != '\0' ? cp : NULL; |
5ae9d168 UD |
264 | } |
265 | ||
ccf970c7 AZ |
266 | #ifndef GLOB_ATTRIBUTE |
267 | # define GLOB_ATTRIBUTE | |
268 | #endif | |
60f0e64b | 269 | |
28f540f4 RM |
270 | /* Do glob searching for PATTERN, placing results in PGLOB. |
271 | The bits defined above may be set in FLAGS. | |
272 | If a directory cannot be opened or read and ERRFUNC is not nil, | |
273 | it is called with the pathname that caused the error, and the | |
c66c9082 AZ |
274 | 'errno' value from the failing call; if it returns non-zero |
275 | 'glob' returns GLOB_ABORTED; if it returns zero, the error is ignored. | |
28f540f4 | 276 | If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned. |
c66c9082 | 277 | Otherwise, 'glob' returns zero. */ |
28f540f4 | 278 | int |
4a381a81 | 279 | GLOB_ATTRIBUTE |
ccf970c7 AZ |
280 | __glob (const char *pattern, int flags, int (*errfunc) (const char *, int), |
281 | glob_t *pglob) | |
28f540f4 RM |
282 | { |
283 | const char *filename; | |
f2962a71 | 284 | char *dirname = NULL; |
28f540f4 RM |
285 | size_t dirlen; |
286 | int status; | |
ec6f8477 | 287 | size_t oldcount; |
05f135ba UD |
288 | int meta; |
289 | int dirname_modified; | |
f2962a71 | 290 | int malloc_dirname = 0; |
05f135ba | 291 | glob_t dirs; |
f2962a71 | 292 | int retval = 0; |
f2962a71 | 293 | size_t alloca_used = 0; |
28f540f4 RM |
294 | |
295 | if (pattern == NULL || pglob == NULL || (flags & ~__GLOB_FLAGS) != 0) | |
296 | { | |
c4029823 | 297 | __set_errno (EINVAL); |
28f540f4 RM |
298 | return -1; |
299 | } | |
300 | ||
a471e96a OB |
301 | /* POSIX requires all slashes to be matched. This means that with |
302 | a trailing slash we must match only directories. */ | |
303 | if (pattern[0] && pattern[strlen (pattern) - 1] == '/') | |
304 | flags |= GLOB_ONLYDIR; | |
305 | ||
460adbb8 | 306 | if (!(flags & GLOB_DOOFFS)) |
c66c9082 | 307 | /* Have to do this so 'globfree' knows where to start freeing. It |
460adbb8 UD |
308 | also makes all the code that uses gl_offs simpler. */ |
309 | pglob->gl_offs = 0; | |
310 | ||
44c637ce AS |
311 | if (!(flags & GLOB_APPEND)) |
312 | { | |
313 | pglob->gl_pathc = 0; | |
314 | if (!(flags & GLOB_DOOFFS)) | |
315 | pglob->gl_pathv = NULL; | |
316 | else | |
317 | { | |
318 | size_t i; | |
319 | ||
320 | if (pglob->gl_offs >= ~((size_t) 0) / sizeof (char *)) | |
321 | return GLOB_NOSPACE; | |
322 | ||
323 | pglob->gl_pathv = (char **) malloc ((pglob->gl_offs + 1) | |
324 | * sizeof (char *)); | |
325 | if (pglob->gl_pathv == NULL) | |
326 | return GLOB_NOSPACE; | |
327 | ||
328 | for (i = 0; i <= pglob->gl_offs; ++i) | |
329 | pglob->gl_pathv[i] = NULL; | |
330 | } | |
331 | } | |
332 | ||
787e4db9 RM |
333 | if (flags & GLOB_BRACE) |
334 | { | |
98d2ca3d UD |
335 | const char *begin; |
336 | ||
337 | if (flags & GLOB_NOESCAPE) | |
338 | begin = strchr (pattern, '{'); | |
339 | else | |
340 | { | |
341 | begin = pattern; | |
342 | while (1) | |
343 | { | |
344 | if (*begin == '\0') | |
345 | { | |
346 | begin = NULL; | |
347 | break; | |
348 | } | |
349 | ||
350 | if (*begin == '\\' && begin[1] != '\0') | |
351 | ++begin; | |
352 | else if (*begin == '{') | |
353 | break; | |
354 | ||
355 | ++begin; | |
356 | } | |
357 | } | |
358 | ||
787e4db9 RM |
359 | if (begin != NULL) |
360 | { | |
5ae9d168 UD |
361 | /* Allocate working buffer large enough for our work. Note that |
362 | we have at least an opening and closing brace. */ | |
ec6f8477 | 363 | size_t firstc; |
5ae9d168 UD |
364 | char *alt_start; |
365 | const char *p; | |
366 | const char *next; | |
367 | const char *rest; | |
368 | size_t rest_len; | |
f2962a71 UD |
369 | char *onealt; |
370 | size_t pattern_len = strlen (pattern) - 1; | |
c66c9082 | 371 | int alloca_onealt = glob_use_alloca (alloca_used, pattern_len); |
f2962a71 UD |
372 | if (alloca_onealt) |
373 | onealt = alloca_account (pattern_len, alloca_used); | |
374 | else | |
5ae9d168 | 375 | { |
c66c9082 | 376 | onealt = malloc (pattern_len); |
f2962a71 | 377 | if (onealt == NULL) |
44c637ce | 378 | return GLOB_NOSPACE; |
5ae9d168 | 379 | } |
5ae9d168 UD |
380 | |
381 | /* We know the prefix for all sub-patterns. */ | |
86187531 | 382 | alt_start = mempcpy (onealt, pattern, begin - pattern); |
5ae9d168 UD |
383 | |
384 | /* Find the first sub-pattern and at the same time find the | |
385 | rest after the closing brace. */ | |
98d2ca3d | 386 | next = next_brace_sub (begin + 1, flags); |
5ae9d168 | 387 | if (next == NULL) |
787e4db9 | 388 | { |
c66c9082 | 389 | /* It is an invalid expression. */ |
f2962a71 | 390 | illegal_brace: |
a1ffb40e | 391 | if (__glibc_unlikely (!alloca_onealt)) |
f2962a71 | 392 | free (onealt); |
44c637ce AS |
393 | flags &= ~GLOB_BRACE; |
394 | goto no_brace; | |
5ae9d168 UD |
395 | } |
396 | ||
397 | /* Now find the end of the whole brace expression. */ | |
398 | rest = next; | |
399 | while (*rest != '}') | |
400 | { | |
98d2ca3d | 401 | rest = next_brace_sub (rest + 1, flags); |
5ae9d168 | 402 | if (rest == NULL) |
f2962a71 UD |
403 | /* It is an illegal expression. */ |
404 | goto illegal_brace; | |
6025c399 | 405 | } |
5ae9d168 UD |
406 | /* Please note that we now can be sure the brace expression |
407 | is well-formed. */ | |
408 | rest_len = strlen (++rest) + 1; | |
6025c399 RM |
409 | |
410 | /* We have a brace expression. BEGIN points to the opening {, | |
411 | NEXT points past the terminator of the first element, and END | |
412 | points past the final }. We will accumulate result names from | |
413 | recursive runs for each brace alternative in the buffer using | |
414 | GLOB_APPEND. */ | |
6025c399 RM |
415 | firstc = pglob->gl_pathc; |
416 | ||
6025c399 RM |
417 | p = begin + 1; |
418 | while (1) | |
419 | { | |
6025c399 | 420 | int result; |
5ae9d168 UD |
421 | |
422 | /* Construct the new glob expression. */ | |
dd7d45e8 | 423 | mempcpy (mempcpy (alt_start, p, next - p), rest, rest_len); |
5ae9d168 | 424 | |
ccf970c7 AZ |
425 | result = __glob (onealt, |
426 | ((flags & ~(GLOB_NOCHECK | GLOB_NOMAGIC)) | |
427 | | GLOB_APPEND), | |
428 | errfunc, pglob); | |
6025c399 RM |
429 | |
430 | /* If we got an error, return it. */ | |
431 | if (result && result != GLOB_NOMATCH) | |
787e4db9 | 432 | { |
a1ffb40e | 433 | if (__glibc_unlikely (!alloca_onealt)) |
f2962a71 | 434 | free (onealt); |
6025c399 | 435 | if (!(flags & GLOB_APPEND)) |
03af5793 UD |
436 | { |
437 | globfree (pglob); | |
438 | pglob->gl_pathc = 0; | |
439 | } | |
6025c399 RM |
440 | return result; |
441 | } | |
442 | ||
5ae9d168 UD |
443 | if (*next == '}') |
444 | /* We saw the last entry. */ | |
445 | break; | |
446 | ||
447 | p = next + 1; | |
98d2ca3d | 448 | next = next_brace_sub (p, flags); |
5ae9d168 | 449 | assert (next != NULL); |
787e4db9 | 450 | } |
6025c399 | 451 | |
a1ffb40e | 452 | if (__glibc_unlikely (!alloca_onealt)) |
f2962a71 | 453 | free (onealt); |
5ae9d168 UD |
454 | |
455 | if (pglob->gl_pathc != firstc) | |
456 | /* We found some entries. */ | |
457 | return 0; | |
458 | else if (!(flags & (GLOB_NOCHECK|GLOB_NOMAGIC))) | |
6025c399 | 459 | return GLOB_NOMATCH; |
787e4db9 RM |
460 | } |
461 | } | |
462 | ||
44c637ce | 463 | no_brace: |
a5f3b0f8 UD |
464 | oldcount = pglob->gl_pathc + pglob->gl_offs; |
465 | ||
28f540f4 RM |
466 | /* Find the filename. */ |
467 | filename = strrchr (pattern, '/'); | |
c66c9082 | 468 | |
786a5421 | 469 | #if defined __MSDOS__ || defined WINDOWS32 |
c66c9082 | 470 | /* The case of "d:pattern". Since ':' is not allowed in |
786a5421 UD |
471 | file names, we can safely assume that wherever it |
472 | happens in pattern, it signals the filename part. This | |
473 | is so we could some day support patterns like "[a-z]:foo". */ | |
474 | if (filename == NULL) | |
475 | filename = strchr (pattern, ':'); | |
476 | #endif /* __MSDOS__ || WINDOWS32 */ | |
c66c9082 | 477 | |
05f135ba | 478 | dirname_modified = 0; |
28f540f4 RM |
479 | if (filename == NULL) |
480 | { | |
49c091e5 | 481 | /* This can mean two things: a simple name or "~name". The latter |
6c202c68 | 482 | case is nothing but a notation for a directory. */ |
1bc21e7a | 483 | if ((flags & (GLOB_TILDE|GLOB_TILDE_CHECK)) && pattern[0] == '~') |
6c202c68 | 484 | { |
f2962a71 | 485 | dirname = (char *) pattern; |
6c202c68 UD |
486 | dirlen = strlen (pattern); |
487 | ||
c9243dac | 488 | /* Set FILENAME to NULL as a special flag. This is ugly but |
786a5421 | 489 | other solutions would require much more code. We test for |
c9243dac UD |
490 | this special case below. */ |
491 | filename = NULL; | |
6c202c68 UD |
492 | } |
493 | else | |
494 | { | |
a1ffb40e | 495 | if (__glibc_unlikely (pattern[0] == '\0')) |
8f2e3994 UD |
496 | { |
497 | dirs.gl_pathv = NULL; | |
498 | goto no_matches; | |
499 | } | |
500 | ||
6c202c68 | 501 | filename = pattern; |
f2962a71 | 502 | dirname = (char *) "."; |
6c202c68 UD |
503 | dirlen = 0; |
504 | } | |
28f540f4 | 505 | } |
c8d48fae | 506 | else if (filename == pattern |
64ba41bc UD |
507 | || (filename == pattern + 1 && pattern[0] == '\\' |
508 | && (flags & GLOB_NOESCAPE) == 0)) | |
28f540f4 | 509 | { |
c8d48fae | 510 | /* "/pattern" or "\\/pattern". */ |
f2962a71 | 511 | dirname = (char *) "/"; |
28f540f4 RM |
512 | dirlen = 1; |
513 | ++filename; | |
514 | } | |
515 | else | |
516 | { | |
ec986e23 | 517 | char *newp; |
28f540f4 | 518 | dirlen = filename - pattern; |
786a5421 UD |
519 | #if defined __MSDOS__ || defined WINDOWS32 |
520 | if (*filename == ':' | |
521 | || (filename > pattern + 1 && filename[-1] == ':')) | |
522 | { | |
523 | char *drive_spec; | |
524 | ||
525 | ++dirlen; | |
c66c9082 | 526 | drive_spec = __alloca (dirlen + 1); |
786a5421 | 527 | *((char *) mempcpy (drive_spec, pattern, dirlen)) = '\0'; |
786a5421 UD |
528 | /* For now, disallow wildcards in the drive spec, to |
529 | prevent infinite recursion in glob. */ | |
530 | if (__glob_pattern_p (drive_spec, !(flags & GLOB_NOESCAPE))) | |
531 | return GLOB_NOMATCH; | |
c66c9082 | 532 | /* If this is "d:pattern", we need to copy ':' to DIRNAME |
786a5421 UD |
533 | as well. If it's "d:/pattern", don't remove the slash |
534 | from "d:/", since "d:" and "d:/" are not the same.*/ | |
535 | } | |
536 | #endif | |
c66c9082 AZ |
537 | |
538 | if (glob_use_alloca (alloca_used, dirlen + 1)) | |
f2962a71 UD |
539 | newp = alloca_account (dirlen + 1, alloca_used); |
540 | else | |
f2962a71 UD |
541 | { |
542 | newp = malloc (dirlen + 1); | |
543 | if (newp == NULL) | |
544 | return GLOB_NOSPACE; | |
545 | malloc_dirname = 1; | |
546 | } | |
ec986e23 | 547 | *((char *) mempcpy (newp, pattern, dirlen)) = '\0'; |
ec986e23 | 548 | dirname = newp; |
28f540f4 | 549 | ++filename; |
28f540f4 | 550 | |
786a5421 | 551 | #if defined __MSDOS__ || defined WINDOWS32 |
c66c9082 AZ |
552 | bool drive_root = (dirlen > 1 |
553 | && (dirname[dirlen - 1] == ':' | |
554 | || (dirlen > 2 && dirname[dirlen - 2] == ':' | |
555 | && dirname[dirlen - 1] == '/'))); | |
556 | #else | |
557 | bool drive_root = false; | |
786a5421 | 558 | #endif |
c66c9082 AZ |
559 | |
560 | if (filename[0] == '\0' && dirlen > 1 && !drive_root) | |
561 | /* "pattern/". Expand "pattern", appending slashes. */ | |
6c202c68 | 562 | { |
05f135ba UD |
563 | int orig_flags = flags; |
564 | if (!(flags & GLOB_NOESCAPE) && dirname[dirlen - 1] == '\\') | |
565 | { | |
566 | /* "pattern\\/". Remove the final backslash if it hasn't | |
567 | been quoted. */ | |
568 | char *p = (char *) &dirname[dirlen - 1]; | |
569 | ||
570 | while (p > dirname && p[-1] == '\\') --p; | |
571 | if ((&dirname[dirlen] - p) & 1) | |
572 | { | |
573 | *(char *) &dirname[--dirlen] = '\0'; | |
574 | flags &= ~(GLOB_NOCHECK | GLOB_NOMAGIC); | |
575 | } | |
576 | } | |
ccf970c7 | 577 | int val = __glob (dirname, flags | GLOB_MARK, errfunc, pglob); |
6c202c68 UD |
578 | if (val == 0) |
579 | pglob->gl_flags = ((pglob->gl_flags & ~GLOB_MARK) | |
580 | | (flags & GLOB_MARK)); | |
05f135ba UD |
581 | else if (val == GLOB_NOMATCH && flags != orig_flags) |
582 | { | |
583 | /* Make sure globfree (&dirs); is a nop. */ | |
584 | dirs.gl_pathv = NULL; | |
585 | flags = orig_flags; | |
586 | oldcount = pglob->gl_pathc + pglob->gl_offs; | |
587 | goto no_matches; | |
588 | } | |
f2962a71 UD |
589 | retval = val; |
590 | goto out; | |
6c202c68 | 591 | } |
28f540f4 RM |
592 | } |
593 | ||
1bc21e7a | 594 | if ((flags & (GLOB_TILDE|GLOB_TILDE_CHECK)) && dirname[0] == '~') |
787e4db9 | 595 | { |
05f135ba UD |
596 | if (dirname[1] == '\0' || dirname[1] == '/' |
597 | || (!(flags & GLOB_NOESCAPE) && dirname[1] == '\\' | |
598 | && (dirname[2] == '\0' || dirname[2] == '/'))) | |
787e4db9 RM |
599 | { |
600 | /* Look up home directory. */ | |
f2962a71 UD |
601 | char *home_dir = getenv ("HOME"); |
602 | int malloc_home_dir = 0; | |
5ae9d168 | 603 | if (home_dir == NULL || home_dir[0] == '\0') |
787e4db9 | 604 | { |
c66c9082 AZ |
605 | #ifdef WINDOWS32 |
606 | /* Windows NT defines HOMEDRIVE and HOMEPATH. But give | |
607 | preference to HOME, because the user can change HOME. */ | |
608 | const char *home_drive = getenv ("HOMEDRIVE"); | |
609 | const char *home_path = getenv ("HOMEPATH"); | |
610 | ||
611 | if (home_drive != NULL && home_path != NULL) | |
612 | { | |
613 | size_t home_drive_len = strlen (home_drive); | |
614 | size_t home_path_len = strlen (home_path); | |
615 | char *mem = alloca (home_drive_len + home_path_len + 1); | |
616 | ||
617 | memcpy (mem, home_drive, home_drive_len); | |
618 | memcpy (mem + home_drive_len, home_path, home_path_len + 1); | |
619 | home_dir = mem; | |
620 | } | |
621 | else | |
622 | home_dir = "c:/users/default"; /* poor default */ | |
623 | #else | |
ffca8901 AZ |
624 | int err; |
625 | struct passwd *p; | |
626 | struct passwd pwbuf; | |
627 | struct scratch_buffer s; | |
628 | scratch_buffer_init (&s); | |
629 | while (true) | |
c66c9082 | 630 | { |
ffca8901 AZ |
631 | p = NULL; |
632 | err = __getlogin_r (s.data, s.length); | |
633 | if (err == 0) | |
c66c9082 | 634 | { |
c66c9082 | 635 | # if defined HAVE_GETPWNAM_R || defined _LIBC |
ffca8901 | 636 | size_t ssize = strlen (s.data) + 1; |
e184ac3a AZ |
637 | char *sdata = s.data; |
638 | err = getpwnam_r (sdata, &pwbuf, sdata + ssize, | |
ffca8901 | 639 | s.length - ssize, &p); |
c66c9082 | 640 | # else |
ffca8901 AZ |
641 | p = getpwnam (s.data); |
642 | if (p == NULL) | |
643 | err = errno; | |
c66c9082 | 644 | # endif |
ffca8901 AZ |
645 | } |
646 | if (err != ERANGE) | |
647 | break; | |
648 | if (!scratch_buffer_grow (&s)) | |
f2962a71 | 649 | { |
ffca8901 AZ |
650 | retval = GLOB_NOSPACE; |
651 | goto out; | |
f2962a71 | 652 | } |
787e4db9 | 653 | } |
ffca8901 | 654 | if (err == 0) |
c66c9082 | 655 | { |
ffca8901 AZ |
656 | home_dir = strdup (p->pw_dir); |
657 | malloc_home_dir = 1; | |
658 | } | |
659 | scratch_buffer_free (&s); | |
660 | if (err == 0 && home_dir == NULL) | |
661 | { | |
662 | retval = GLOB_NOSPACE; | |
663 | goto out; | |
c66c9082 AZ |
664 | } |
665 | #endif /* WINDOWS32 */ | |
787e4db9 | 666 | } |
5ae9d168 | 667 | if (home_dir == NULL || home_dir[0] == '\0') |
6e4c40ba | 668 | { |
c66c9082 AZ |
669 | if (__glibc_unlikely (malloc_home_dir)) |
670 | free (home_dir); | |
6e4c40ba | 671 | if (flags & GLOB_TILDE_CHECK) |
f2962a71 | 672 | { |
f2962a71 UD |
673 | retval = GLOB_NOMATCH; |
674 | goto out; | |
675 | } | |
6e4c40ba | 676 | else |
c66c9082 AZ |
677 | { |
678 | home_dir = (char *) "~"; /* No luck. */ | |
679 | malloc_home_dir = 0; | |
680 | } | |
6e4c40ba | 681 | } |
5ae9d168 UD |
682 | /* Now construct the full directory. */ |
683 | if (dirname[1] == '\0') | |
05f135ba | 684 | { |
a1ffb40e | 685 | if (__glibc_unlikely (malloc_dirname)) |
f2962a71 UD |
686 | free (dirname); |
687 | ||
05f135ba UD |
688 | dirname = home_dir; |
689 | dirlen = strlen (dirname); | |
f2962a71 | 690 | malloc_dirname = malloc_home_dir; |
05f135ba | 691 | } |
5ae9d168 UD |
692 | else |
693 | { | |
694 | char *newp; | |
695 | size_t home_len = strlen (home_dir); | |
c66c9082 | 696 | int use_alloca = glob_use_alloca (alloca_used, home_len + dirlen); |
f2962a71 UD |
697 | if (use_alloca) |
698 | newp = alloca_account (home_len + dirlen, alloca_used); | |
699 | else | |
700 | { | |
701 | newp = malloc (home_len + dirlen); | |
702 | if (newp == NULL) | |
703 | { | |
a1ffb40e | 704 | if (__glibc_unlikely (malloc_home_dir)) |
f2962a71 UD |
705 | free (home_dir); |
706 | retval = GLOB_NOSPACE; | |
707 | goto out; | |
708 | } | |
709 | } | |
710 | ||
dd7d45e8 UD |
711 | mempcpy (mempcpy (newp, home_dir, home_len), |
712 | &dirname[1], dirlen); | |
f2962a71 | 713 | |
a1ffb40e | 714 | if (__glibc_unlikely (malloc_dirname)) |
f2962a71 UD |
715 | free (dirname); |
716 | ||
5ae9d168 | 717 | dirname = newp; |
05f135ba | 718 | dirlen += home_len - 1; |
f2962a71 | 719 | malloc_dirname = !use_alloca; |
c66c9082 AZ |
720 | |
721 | if (__glibc_unlikely (malloc_home_dir)) | |
722 | free (home_dir); | |
5ae9d168 | 723 | } |
05f135ba | 724 | dirname_modified = 1; |
787e4db9 RM |
725 | } |
726 | else | |
727 | { | |
c66c9082 | 728 | #ifndef WINDOWS32 |
5ae9d168 | 729 | char *end_name = strchr (dirname, '/'); |
f2962a71 UD |
730 | char *user_name; |
731 | int malloc_user_name = 0; | |
05f135ba | 732 | char *unescape = NULL; |
5ae9d168 | 733 | |
05f135ba UD |
734 | if (!(flags & GLOB_NOESCAPE)) |
735 | { | |
736 | if (end_name == NULL) | |
737 | { | |
738 | unescape = strchr (dirname, '\\'); | |
739 | if (unescape) | |
740 | end_name = strchr (unescape, '\0'); | |
741 | } | |
742 | else | |
743 | unescape = memchr (dirname, '\\', end_name - dirname); | |
744 | } | |
5ae9d168 UD |
745 | if (end_name == NULL) |
746 | user_name = dirname + 1; | |
747 | else | |
748 | { | |
ec986e23 | 749 | char *newp; |
c66c9082 | 750 | if (glob_use_alloca (alloca_used, end_name - dirname)) |
f2962a71 UD |
751 | newp = alloca_account (end_name - dirname, alloca_used); |
752 | else | |
753 | { | |
754 | newp = malloc (end_name - dirname); | |
755 | if (newp == NULL) | |
756 | { | |
757 | retval = GLOB_NOSPACE; | |
758 | goto out; | |
759 | } | |
760 | malloc_user_name = 1; | |
761 | } | |
05f135ba UD |
762 | if (unescape != NULL) |
763 | { | |
764 | char *p = mempcpy (newp, dirname + 1, | |
765 | unescape - dirname - 1); | |
766 | char *q = unescape; | |
a159b53f | 767 | while (q != end_name) |
05f135ba UD |
768 | { |
769 | if (*q == '\\') | |
770 | { | |
a159b53f | 771 | if (q + 1 == end_name) |
05f135ba UD |
772 | { |
773 | /* "~fo\\o\\" unescape to user_name "foo\\", | |
774 | but "~fo\\o\\/" unescape to user_name | |
775 | "foo". */ | |
776 | if (filename == NULL) | |
777 | *p++ = '\\'; | |
778 | break; | |
779 | } | |
780 | ++q; | |
781 | } | |
782 | *p++ = *q++; | |
783 | } | |
784 | *p = '\0'; | |
785 | } | |
786 | else | |
c369d66e | 787 | *((char *) mempcpy (newp, dirname + 1, end_name - dirname - 1)) |
05f135ba | 788 | = '\0'; |
ec986e23 | 789 | user_name = newp; |
5ae9d168 UD |
790 | } |
791 | ||
787e4db9 | 792 | /* Look up specific user's home directory. */ |
5ae9d168 | 793 | { |
ec986e23 | 794 | struct passwd *p; |
5a79f975 AZ |
795 | struct scratch_buffer pwtmpbuf; |
796 | scratch_buffer_init (&pwtmpbuf); | |
797 | ||
61eb22d3 | 798 | # if defined HAVE_GETPWNAM_R || defined _LIBC |
ec986e23 | 799 | struct passwd pwbuf; |
5a79f975 AZ |
800 | |
801 | while (getpwnam_r (user_name, &pwbuf, | |
802 | pwtmpbuf.data, pwtmpbuf.length, &p) | |
803 | == ERANGE) | |
f2962a71 | 804 | { |
5a79f975 | 805 | if (!scratch_buffer_grow (&pwtmpbuf)) |
f2962a71 | 806 | { |
f2962a71 UD |
807 | retval = GLOB_NOSPACE; |
808 | goto out; | |
809 | } | |
f6b56b55 | 810 | } |
61eb22d3 | 811 | # else |
ec986e23 | 812 | p = getpwnam (user_name); |
f6b56b55 | 813 | # endif |
f2962a71 | 814 | |
a1ffb40e | 815 | if (__glibc_unlikely (malloc_user_name)) |
f2962a71 UD |
816 | free (user_name); |
817 | ||
818 | /* If we found a home directory use this. */ | |
5ae9d168 | 819 | if (p != NULL) |
f2962a71 UD |
820 | { |
821 | size_t home_len = strlen (p->pw_dir); | |
822 | size_t rest_len = end_name == NULL ? 0 : strlen (end_name); | |
ddc650e9 AS |
823 | char *d, *newp; |
824 | bool use_alloca = glob_use_alloca (alloca_used, | |
825 | home_len + rest_len + 1); | |
f2962a71 | 826 | |
ddc650e9 AS |
827 | if (use_alloca) |
828 | newp = alloca_account (home_len + rest_len + 1, alloca_used); | |
f2962a71 UD |
829 | else |
830 | { | |
ddc650e9 AS |
831 | newp = malloc (home_len + rest_len + 1); |
832 | if (newp == NULL) | |
f2962a71 | 833 | { |
5a79f975 | 834 | scratch_buffer_free (&pwtmpbuf); |
f2962a71 UD |
835 | retval = GLOB_NOSPACE; |
836 | goto out; | |
837 | } | |
f2962a71 | 838 | } |
ddc650e9 | 839 | d = mempcpy (newp, p->pw_dir, home_len); |
d711a00f AZ |
840 | if (end_name != NULL) |
841 | d = mempcpy (d, end_name, rest_len); | |
842 | *d = '\0'; | |
f2962a71 | 843 | |
ddc650e9 AS |
844 | if (__glibc_unlikely (malloc_dirname)) |
845 | free (dirname); | |
846 | dirname = newp; | |
847 | malloc_dirname = !use_alloca; | |
848 | ||
f2962a71 UD |
849 | dirlen = home_len + rest_len; |
850 | dirname_modified = 1; | |
f2962a71 | 851 | } |
5ae9d168 | 852 | else |
f2962a71 | 853 | { |
f2962a71 | 854 | if (flags & GLOB_TILDE_CHECK) |
c66c9082 AZ |
855 | { |
856 | /* We have to regard it as an error if we cannot find the | |
857 | home directory. */ | |
858 | retval = GLOB_NOMATCH; | |
859 | goto out; | |
860 | } | |
f2962a71 | 861 | } |
5a79f975 | 862 | scratch_buffer_free (&pwtmpbuf); |
5ae9d168 | 863 | } |
c66c9082 | 864 | #endif /* !WINDOWS32 */ |
787e4db9 RM |
865 | } |
866 | } | |
867 | ||
c9243dac UD |
868 | /* Now test whether we looked for "~" or "~NAME". In this case we |
869 | can give the answer now. */ | |
870 | if (filename == NULL) | |
871 | { | |
5554304f AZ |
872 | size_t newcount = pglob->gl_pathc + pglob->gl_offs; |
873 | char **new_gl_pathv; | |
460adbb8 | 874 | |
5554304f AZ |
875 | if (newcount > SIZE_MAX / sizeof (char *) - 2) |
876 | { | |
877 | nospace: | |
878 | free (pglob->gl_pathv); | |
879 | pglob->gl_pathv = NULL; | |
880 | pglob->gl_pathc = 0; | |
881 | retval = GLOB_NOSPACE; | |
882 | goto out; | |
883 | } | |
90bb2039 | 884 | |
5554304f AZ |
885 | new_gl_pathv = realloc (pglob->gl_pathv, |
886 | (newcount + 2) * sizeof (char *)); | |
887 | if (new_gl_pathv == NULL) | |
888 | goto nospace; | |
889 | pglob->gl_pathv = new_gl_pathv; | |
c9243dac | 890 | |
5554304f AZ |
891 | if (flags & GLOB_MARK && is_dir (dirname, flags, pglob)) |
892 | { | |
893 | char *p; | |
894 | pglob->gl_pathv[newcount] = malloc (dirlen + 2); | |
895 | if (pglob->gl_pathv[newcount] == NULL) | |
896 | goto nospace; | |
897 | p = mempcpy (pglob->gl_pathv[newcount], dirname, dirlen); | |
898 | p[0] = '/'; | |
899 | p[1] = '\0'; | |
900 | if (__glibc_unlikely (malloc_dirname)) | |
901 | free (dirname); | |
902 | } | |
903 | else | |
904 | { | |
905 | if (__glibc_unlikely (malloc_dirname)) | |
906 | pglob->gl_pathv[newcount] = dirname; | |
907 | else | |
908 | { | |
909 | pglob->gl_pathv[newcount] = strdup (dirname); | |
910 | if (pglob->gl_pathv[newcount] == NULL) | |
911 | goto nospace; | |
912 | } | |
913 | } | |
914 | pglob->gl_pathv[++newcount] = NULL; | |
915 | ++pglob->gl_pathc; | |
916 | pglob->gl_flags = flags; | |
c9243dac | 917 | |
5554304f | 918 | return 0; |
c9243dac UD |
919 | } |
920 | ||
05f135ba UD |
921 | meta = __glob_pattern_type (dirname, !(flags & GLOB_NOESCAPE)); |
922 | /* meta is 1 if correct glob pattern containing metacharacters. | |
923 | If meta has bit (1 << 2) set, it means there was an unterminated | |
924 | [ which we handle the same, using fnmatch. Broken unterminated | |
925 | pattern bracket expressions ought to be rare enough that it is | |
926 | not worth special casing them, fnmatch will do the right thing. */ | |
07b4f49d | 927 | if (meta & (GLOBPAT_SPECIAL | GLOBPAT_BRACKET)) |
28f540f4 RM |
928 | { |
929 | /* The directory name contains metacharacters, so we | |
930 | have to glob for the directory, and then glob for | |
931 | the pattern in each directory found. */ | |
ec6f8477 | 932 | size_t i; |
28f540f4 | 933 | |
05f135ba UD |
934 | if (!(flags & GLOB_NOESCAPE) && dirlen > 0 && dirname[dirlen - 1] == '\\') |
935 | { | |
936 | /* "foo\\/bar". Remove the final backslash from dirname | |
937 | if it has not been quoted. */ | |
938 | char *p = (char *) &dirname[dirlen - 1]; | |
939 | ||
940 | while (p > dirname && p[-1] == '\\') --p; | |
941 | if ((&dirname[dirlen] - p) & 1) | |
942 | *(char *) &dirname[--dirlen] = '\0'; | |
943 | } | |
944 | ||
a1ffb40e | 945 | if (__glibc_unlikely ((flags & GLOB_ALTDIRFUNC) != 0)) |
29332175 UD |
946 | { |
947 | /* Use the alternative access functions also in the recursive | |
948 | call. */ | |
949 | dirs.gl_opendir = pglob->gl_opendir; | |
950 | dirs.gl_readdir = pglob->gl_readdir; | |
951 | dirs.gl_closedir = pglob->gl_closedir; | |
952 | dirs.gl_stat = pglob->gl_stat; | |
953 | dirs.gl_lstat = pglob->gl_lstat; | |
954 | } | |
955 | ||
ccf970c7 AZ |
956 | status = __glob (dirname, |
957 | ((flags & (GLOB_ERR | GLOB_NOESCAPE | GLOB_ALTDIRFUNC)) | |
958 | | GLOB_NOSORT | GLOB_ONLYDIR), | |
959 | errfunc, &dirs); | |
28f540f4 | 960 | if (status != 0) |
05f135ba UD |
961 | { |
962 | if ((flags & GLOB_NOCHECK) == 0 || status != GLOB_NOMATCH) | |
c66c9082 AZ |
963 | { |
964 | retval = status; | |
965 | goto out; | |
966 | } | |
05f135ba UD |
967 | goto no_matches; |
968 | } | |
28f540f4 RM |
969 | |
970 | /* We have successfully globbed the preceding directory name. | |
971 | For each name we found, call glob_in_dir on it and FILENAME, | |
972 | appending the results to PGLOB. */ | |
973 | for (i = 0; i < dirs.gl_pathc; ++i) | |
974 | { | |
b87c4b24 | 975 | size_t old_pathc; |
28f540f4 | 976 | |
cc60175e | 977 | old_pathc = pglob->gl_pathc; |
28f540f4 | 978 | status = glob_in_dir (filename, dirs.gl_pathv[i], |
add09583 UD |
979 | ((flags | GLOB_APPEND) |
980 | & ~(GLOB_NOCHECK | GLOB_NOMAGIC)), | |
f2962a71 | 981 | errfunc, pglob, alloca_used); |
28f540f4 RM |
982 | if (status == GLOB_NOMATCH) |
983 | /* No matches in this directory. Try the next. */ | |
984 | continue; | |
985 | ||
986 | if (status != 0) | |
987 | { | |
988 | globfree (&dirs); | |
989 | globfree (pglob); | |
03af5793 | 990 | pglob->gl_pathc = 0; |
c66c9082 AZ |
991 | retval = status; |
992 | goto out; | |
28f540f4 RM |
993 | } |
994 | ||
995 | /* Stick the directory on the front of each name. */ | |
996 | if (prefix_array (dirs.gl_pathv[i], | |
460adbb8 | 997 | &pglob->gl_pathv[old_pathc + pglob->gl_offs], |
cc60175e | 998 | pglob->gl_pathc - old_pathc)) |
28f540f4 RM |
999 | { |
1000 | globfree (&dirs); | |
1001 | globfree (pglob); | |
03af5793 | 1002 | pglob->gl_pathc = 0; |
c66c9082 AZ |
1003 | retval = GLOB_NOSPACE; |
1004 | goto out; | |
28f540f4 RM |
1005 | } |
1006 | } | |
1007 | ||
1008 | flags |= GLOB_MAGCHAR; | |
1009 | ||
c66c9082 | 1010 | /* We have ignored the GLOB_NOCHECK flag in the 'glob_in_dir' calls. |
460adbb8 | 1011 | But if we have not found any matching entry and the GLOB_NOCHECK |
d1dddedf | 1012 | flag was set we must return the input pattern itself. */ |
460adbb8 | 1013 | if (pglob->gl_pathc + pglob->gl_offs == oldcount) |
6e4c40ba | 1014 | { |
05f135ba | 1015 | no_matches: |
6e4c40ba UD |
1016 | /* No matches. */ |
1017 | if (flags & GLOB_NOCHECK) | |
1018 | { | |
b87c4b24 | 1019 | size_t newcount = pglob->gl_pathc + pglob->gl_offs; |
d1dddedf | 1020 | char **new_gl_pathv; |
6e4c40ba | 1021 | |
c66c9082 | 1022 | if (newcount > SIZE_MAX / sizeof (char *) - 2) |
6e4c40ba | 1023 | { |
90bb2039 | 1024 | nospace2: |
6e4c40ba | 1025 | globfree (&dirs); |
c66c9082 AZ |
1026 | retval = GLOB_NOSPACE; |
1027 | goto out; | |
6e4c40ba | 1028 | } |
90bb2039 | 1029 | |
c66c9082 AZ |
1030 | new_gl_pathv = realloc (pglob->gl_pathv, |
1031 | (newcount + 2) * sizeof (char *)); | |
90bb2039 UD |
1032 | if (new_gl_pathv == NULL) |
1033 | goto nospace2; | |
d1dddedf | 1034 | pglob->gl_pathv = new_gl_pathv; |
28f540f4 | 1035 | |
c66c9082 | 1036 | pglob->gl_pathv[newcount] = strdup (pattern); |
870a4e12 | 1037 | if (pglob->gl_pathv[newcount] == NULL) |
6e4c40ba | 1038 | { |
870a4e12 UD |
1039 | globfree (&dirs); |
1040 | globfree (pglob); | |
03af5793 | 1041 | pglob->gl_pathc = 0; |
c66c9082 AZ |
1042 | retval = GLOB_NOSPACE; |
1043 | goto out; | |
6e4c40ba | 1044 | } |
e852e889 | 1045 | |
870a4e12 UD |
1046 | ++pglob->gl_pathc; |
1047 | ++newcount; | |
1048 | ||
460adbb8 | 1049 | pglob->gl_pathv[newcount] = NULL; |
6e4c40ba | 1050 | pglob->gl_flags = flags; |
6e4c40ba UD |
1051 | } |
1052 | else | |
1338451b AJ |
1053 | { |
1054 | globfree (&dirs); | |
c66c9082 AZ |
1055 | retval = GLOB_NOMATCH; |
1056 | goto out; | |
1338451b | 1057 | } |
6e4c40ba | 1058 | } |
e852e889 UD |
1059 | |
1060 | globfree (&dirs); | |
28f540f4 RM |
1061 | } |
1062 | else | |
1063 | { | |
b87c4b24 | 1064 | size_t old_pathc = pglob->gl_pathc; |
05f135ba | 1065 | int orig_flags = flags; |
460adbb8 | 1066 | |
07b4f49d | 1067 | if (meta & GLOBPAT_BACKSLASH) |
05f135ba UD |
1068 | { |
1069 | char *p = strchr (dirname, '\\'), *q; | |
1070 | /* We need to unescape the dirname string. It is certainly | |
1071 | allocated by alloca, as otherwise filename would be NULL | |
1072 | or dirname wouldn't contain backslashes. */ | |
1073 | q = p; | |
1074 | do | |
1075 | { | |
1076 | if (*p == '\\') | |
1077 | { | |
1078 | *q = *++p; | |
1079 | --dirlen; | |
1080 | } | |
1081 | else | |
1082 | *q = *p; | |
1083 | ++q; | |
1084 | } | |
1085 | while (*p++ != '\0'); | |
1086 | dirname_modified = 1; | |
1087 | } | |
1088 | if (dirname_modified) | |
1089 | flags &= ~(GLOB_NOCHECK | GLOB_NOMAGIC); | |
f2962a71 UD |
1090 | status = glob_in_dir (filename, dirname, flags, errfunc, pglob, |
1091 | alloca_used); | |
28f540f4 | 1092 | if (status != 0) |
05f135ba UD |
1093 | { |
1094 | if (status == GLOB_NOMATCH && flags != orig_flags | |
1095 | && pglob->gl_pathc + pglob->gl_offs == oldcount) | |
1096 | { | |
1097 | /* Make sure globfree (&dirs); is a nop. */ | |
1098 | dirs.gl_pathv = NULL; | |
1099 | flags = orig_flags; | |
1100 | goto no_matches; | |
1101 | } | |
c66c9082 AZ |
1102 | retval = status; |
1103 | goto out; | |
05f135ba | 1104 | } |
28f540f4 RM |
1105 | |
1106 | if (dirlen > 0) | |
1107 | { | |
1108 | /* Stick the directory on the front of each name. */ | |
1109 | if (prefix_array (dirname, | |
460adbb8 UD |
1110 | &pglob->gl_pathv[old_pathc + pglob->gl_offs], |
1111 | pglob->gl_pathc - old_pathc)) | |
28f540f4 RM |
1112 | { |
1113 | globfree (pglob); | |
03af5793 | 1114 | pglob->gl_pathc = 0; |
c66c9082 AZ |
1115 | retval = GLOB_NOSPACE; |
1116 | goto out; | |
28f540f4 RM |
1117 | } |
1118 | } | |
1119 | } | |
1120 | ||
bf3ccd1a RM |
1121 | if (flags & GLOB_MARK) |
1122 | { | |
c043db7a | 1123 | /* Append slashes to directory names. */ |
ec6f8477 | 1124 | size_t i; |
460adbb8 UD |
1125 | |
1126 | for (i = oldcount; i < pglob->gl_pathc + pglob->gl_offs; ++i) | |
5554304f | 1127 | if (is_dir (pglob->gl_pathv[i], flags, pglob)) |
a993273c | 1128 | { |
0a164fe0 | 1129 | size_t len = strlen (pglob->gl_pathv[i]) + 2; |
a993273c | 1130 | char *new = realloc (pglob->gl_pathv[i], len); |
0a164fe0 | 1131 | if (new == NULL) |
a993273c RM |
1132 | { |
1133 | globfree (pglob); | |
03af5793 | 1134 | pglob->gl_pathc = 0; |
c66c9082 AZ |
1135 | retval = GLOB_NOSPACE; |
1136 | goto out; | |
a993273c RM |
1137 | } |
1138 | strcpy (&new[len - 2], "/"); | |
1139 | pglob->gl_pathv[i] = new; | |
1140 | } | |
bf3ccd1a RM |
1141 | } |
1142 | ||
28f540f4 | 1143 | if (!(flags & GLOB_NOSORT)) |
cc60175e UD |
1144 | { |
1145 | /* Sort the vector. */ | |
49a0ba27 | 1146 | qsort (&pglob->gl_pathv[oldcount], |
460adbb8 | 1147 | pglob->gl_pathc + pglob->gl_offs - oldcount, |
cc60175e UD |
1148 | sizeof (char *), collated_compare); |
1149 | } | |
28f540f4 | 1150 | |
f2962a71 | 1151 | out: |
a1ffb40e | 1152 | if (__glibc_unlikely (malloc_dirname)) |
f2962a71 UD |
1153 | free (dirname); |
1154 | ||
1155 | return retval; | |
28f540f4 | 1156 | } |
ccf970c7 AZ |
1157 | #if defined _LIBC && !defined __glob |
1158 | versioned_symbol (libc, __glob, glob, GLIBC_2_27); | |
1159 | libc_hidden_ver (__glob, glob) | |
c41f555e | 1160 | #endif |
28f540f4 RM |
1161 | |
1162 | ||
28f540f4 RM |
1163 | /* Do a collated comparison of A and B. */ |
1164 | static int | |
49a0ba27 | 1165 | collated_compare (const void *a, const void *b) |
28f540f4 | 1166 | { |
c66c9082 AZ |
1167 | char *const *ps1 = a; char *s1 = *ps1; |
1168 | char *const *ps2 = b; char *s2 = *ps2; | |
28f540f4 RM |
1169 | |
1170 | if (s1 == s2) | |
1171 | return 0; | |
1172 | if (s1 == NULL) | |
1173 | return 1; | |
1174 | if (s2 == NULL) | |
1175 | return -1; | |
1176 | return strcoll (s1, s2); | |
1177 | } | |
1178 | ||
1179 | ||
1180 | /* Prepend DIRNAME to each of N members of ARRAY, replacing ARRAY's | |
1181 | elements in place. Return nonzero if out of memory, zero if successful. | |
1182 | A slash is inserted between DIRNAME and each elt of ARRAY, | |
1183 | unless DIRNAME is just "/". Each old element of ARRAY is freed. */ | |
1184 | static int | |
49a0ba27 | 1185 | prefix_array (const char *dirname, char **array, size_t n) |
28f540f4 | 1186 | { |
2e09a79a | 1187 | size_t i; |
28f540f4 | 1188 | size_t dirlen = strlen (dirname); |
c66c9082 | 1189 | char dirsep_char = '/'; |
28f540f4 RM |
1190 | |
1191 | if (dirlen == 1 && dirname[0] == '/') | |
1192 | /* DIRNAME is just "/", so normal prepending would get us "//foo". | |
1193 | We want "/foo" instead, so don't prepend any chars from DIRNAME. */ | |
1194 | dirlen = 0; | |
c66c9082 | 1195 | |
786a5421 | 1196 | #if defined __MSDOS__ || defined WINDOWS32 |
c66c9082 | 1197 | if (dirlen > 1) |
786a5421 | 1198 | { |
ea1bfb07 | 1199 | if (dirname[dirlen - 1] == '/' && dirname[dirlen - 2] == ':') |
786a5421 UD |
1200 | /* DIRNAME is "d:/". Don't prepend the slash from DIRNAME. */ |
1201 | --dirlen; | |
1202 | else if (dirname[dirlen - 1] == ':') | |
1203 | { | |
c66c9082 | 1204 | /* DIRNAME is "d:". Use ':' instead of '/'. */ |
786a5421 | 1205 | --dirlen; |
c66c9082 | 1206 | dirsep_char = ':'; |
786a5421 UD |
1207 | } |
1208 | } | |
1209 | #endif | |
28f540f4 RM |
1210 | |
1211 | for (i = 0; i < n; ++i) | |
1212 | { | |
1213 | size_t eltlen = strlen (array[i]) + 1; | |
c66c9082 | 1214 | char *new = malloc (dirlen + 1 + eltlen); |
28f540f4 RM |
1215 | if (new == NULL) |
1216 | { | |
1217 | while (i > 0) | |
49a0ba27 | 1218 | free (array[--i]); |
28f540f4 RM |
1219 | return 1; |
1220 | } | |
1221 | ||
dd7d45e8 | 1222 | { |
49a0ba27 | 1223 | char *endp = mempcpy (new, dirname, dirlen); |
c66c9082 | 1224 | *endp++ = dirsep_char; |
dd7d45e8 UD |
1225 | mempcpy (endp, array[i], eltlen); |
1226 | } | |
49a0ba27 | 1227 | free (array[i]); |
28f540f4 RM |
1228 | array[i] = new; |
1229 | } | |
1230 | ||
1231 | return 0; | |
1232 | } | |
1233 | ||
c66c9082 | 1234 | /* Like 'glob', but PATTERN is a final pathname component, |
28f540f4 RM |
1235 | and matches are searched for in DIRECTORY. |
1236 | The GLOB_NOSORT bit in FLAGS is ignored. No sorting is ever done. | |
1237 | The GLOB_APPEND flag is assumed to be set (always appends). */ | |
1238 | static int | |
49a0ba27 RM |
1239 | glob_in_dir (const char *pattern, const char *directory, int flags, |
1240 | int (*errfunc) (const char *, int), | |
f2962a71 | 1241 | glob_t *pglob, size_t alloca_used) |
28f540f4 | 1242 | { |
66b38fc9 | 1243 | size_t dirlen = strlen (directory); |
49a0ba27 | 1244 | void *stream = NULL; |
c66c9082 AZ |
1245 | # define GLOBNAMES_MEMBERS(nnames) \ |
1246 | struct globnames *next; size_t count; char *name[nnames]; | |
1247 | struct globnames { GLOBNAMES_MEMBERS (FLEXIBLE_ARRAY_MEMBER) }; | |
1248 | struct { GLOBNAMES_MEMBERS (64) } init_names_buf; | |
1249 | struct globnames *init_names = (struct globnames *) &init_names_buf; | |
1250 | struct globnames *names = init_names; | |
1251 | struct globnames *names_alloca = init_names; | |
f1122ec3 | 1252 | size_t nfound = 0; |
f1122ec3 | 1253 | size_t cur = 0; |
86187531 UD |
1254 | int meta; |
1255 | int save; | |
c66c9082 | 1256 | int result; |
86187531 | 1257 | |
c66c9082 | 1258 | alloca_used += sizeof init_names_buf; |
f2962a71 | 1259 | |
c66c9082 AZ |
1260 | init_names->next = NULL; |
1261 | init_names->count = ((sizeof init_names_buf | |
1262 | - offsetof (struct globnames, name)) | |
1263 | / sizeof init_names->name[0]); | |
f1122ec3 | 1264 | |
05f135ba | 1265 | meta = __glob_pattern_type (pattern, !(flags & GLOB_NOESCAPE)); |
07b4f49d | 1266 | if (meta == GLOBPAT_NONE && (flags & (GLOB_NOCHECK|GLOB_NOMAGIC))) |
28f540f4 | 1267 | { |
460adbb8 UD |
1268 | /* We need not do any tests. The PATTERN contains no meta |
1269 | characters and we must not return an error therefore the | |
1270 | result will always contain exactly one name. */ | |
1271 | flags |= GLOB_NOCHECK; | |
460adbb8 | 1272 | } |
07b4f49d | 1273 | else if (meta == GLOBPAT_NONE) |
460adbb8 | 1274 | { |
460adbb8 | 1275 | size_t patlen = strlen (pattern); |
c66c9082 AZ |
1276 | size_t fullsize; |
1277 | bool alloca_fullname | |
1278 | = (! size_add_wrapv (dirlen + 1, patlen + 1, &fullsize) | |
1279 | && glob_use_alloca (alloca_used, fullsize)); | |
f2962a71 UD |
1280 | char *fullname; |
1281 | if (alloca_fullname) | |
c66c9082 | 1282 | fullname = alloca_account (fullsize, alloca_used); |
f2962a71 UD |
1283 | else |
1284 | { | |
c66c9082 | 1285 | fullname = malloc (fullsize); |
f2962a71 UD |
1286 | if (fullname == NULL) |
1287 | return GLOB_NOSPACE; | |
1288 | } | |
a9ddb793 | 1289 | |
460adbb8 UD |
1290 | mempcpy (mempcpy (mempcpy (fullname, directory, dirlen), |
1291 | "/", 1), | |
1292 | pattern, patlen + 1); | |
ccf970c7 | 1293 | if (glob_lstat (pglob, flags, fullname) == 0 |
c66c9082 | 1294 | || errno == EOVERFLOW) |
460adbb8 UD |
1295 | /* We found this file to be existing. Now tell the rest |
1296 | of the function to copy this name into the result. */ | |
1297 | flags |= GLOB_NOCHECK; | |
f2962a71 | 1298 | |
a1ffb40e | 1299 | if (__glibc_unlikely (!alloca_fullname)) |
f2962a71 | 1300 | free (fullname); |
28f540f4 RM |
1301 | } |
1302 | else | |
1303 | { | |
1b6aa63f | 1304 | stream = (__builtin_expect (flags & GLOB_ALTDIRFUNC, 0) |
05f135ba UD |
1305 | ? (*pglob->gl_opendir) (directory) |
1306 | : opendir (directory)); | |
1307 | if (stream == NULL) | |
28f540f4 | 1308 | { |
05f135ba UD |
1309 | if (errno != ENOTDIR |
1310 | && ((errfunc != NULL && (*errfunc) (directory, errno)) | |
1311 | || (flags & GLOB_ERR))) | |
1312 | return GLOB_ABORTED; | |
a9ddb793 UD |
1313 | } |
1314 | else | |
1315 | { | |
05f135ba | 1316 | int fnm_flags = ((!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0) |
c66c9082 | 1317 | | ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0)); |
05f135ba | 1318 | flags |= GLOB_MAGCHAR; |
a9ddb793 | 1319 | |
05f135ba UD |
1320 | while (1) |
1321 | { | |
5171f307 FW |
1322 | struct readdir_result d; |
1323 | { | |
1324 | if (__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)) | |
1325 | d = convert_dirent (GL_READDIR (pglob, stream)); | |
1326 | else | |
1327 | { | |
1328 | #ifdef COMPILE_GLOB64 | |
1329 | d = convert_dirent (__readdir (stream)); | |
2958e6cc | 1330 | #else |
5171f307 | 1331 | d = convert_dirent64 (__readdir64 (stream)); |
2958e6cc | 1332 | #endif |
5171f307 FW |
1333 | } |
1334 | } | |
1335 | if (d.name == NULL) | |
05f135ba | 1336 | break; |
787e4db9 | 1337 | |
05f135ba UD |
1338 | /* If we shall match only directories use the information |
1339 | provided by the dirent call if possible. */ | |
c66c9082 AZ |
1340 | if (flags & GLOB_ONLYDIR) |
1341 | switch (readdir_result_type (d)) | |
1342 | { | |
1343 | case DT_DIR: case DT_LNK: case DT_UNKNOWN: break; | |
1344 | default: continue; | |
1345 | } | |
1cab5444 | 1346 | |
5171f307 | 1347 | if (fnmatch (pattern, d.name, fnm_flags) == 0) |
05f135ba | 1348 | { |
5554304f | 1349 | if (cur == names->count) |
a9ddb793 | 1350 | { |
5554304f AZ |
1351 | struct globnames *newnames; |
1352 | size_t count = names->count * 2; | |
1353 | size_t nameoff = offsetof (struct globnames, name); | |
1354 | size_t size = FLEXSIZEOF (struct globnames, name, | |
1355 | count * sizeof (char *)); | |
1356 | if ((SIZE_MAX - nameoff) / 2 / sizeof (char *) | |
1357 | < names->count) | |
05f135ba | 1358 | goto memory_error; |
5554304f AZ |
1359 | if (glob_use_alloca (alloca_used, size)) |
1360 | newnames = names_alloca | |
1361 | = alloca_account (size, alloca_used); | |
1362 | else if ((newnames = malloc (size)) | |
1363 | == NULL) | |
c66c9082 | 1364 | goto memory_error; |
5554304f AZ |
1365 | newnames->count = count; |
1366 | newnames->next = names; | |
1367 | names = newnames; | |
1368 | cur = 0; | |
a9ddb793 | 1369 | } |
5554304f AZ |
1370 | names->name[cur] = strdup (d.name); |
1371 | if (names->name[cur] == NULL) | |
1372 | goto memory_error; | |
1373 | ++cur; | |
1374 | ++nfound; | |
1375 | if (SIZE_MAX - pglob->gl_offs <= nfound) | |
1376 | goto memory_error; | |
a9ddb793 | 1377 | } |
86187531 UD |
1378 | } |
1379 | } | |
28f540f4 RM |
1380 | } |
1381 | ||
1382 | if (nfound == 0 && (flags & GLOB_NOCHECK)) | |
1383 | { | |
1384 | size_t len = strlen (pattern); | |
1385 | nfound = 1; | |
c66c9082 | 1386 | names->name[cur] = malloc (len + 1); |
f1122ec3 | 1387 | if (names->name[cur] == NULL) |
28f540f4 | 1388 | goto memory_error; |
f1122ec3 | 1389 | *((char *) mempcpy (names->name[cur++], pattern, len)) = '\0'; |
28f540f4 RM |
1390 | } |
1391 | ||
c66c9082 | 1392 | result = GLOB_NOMATCH; |
61eb22d3 UD |
1393 | if (nfound != 0) |
1394 | { | |
c66c9082 | 1395 | char **new_gl_pathv; |
f1122ec3 | 1396 | result = 0; |
a334319f | 1397 | |
c66c9082 AZ |
1398 | if (SIZE_MAX / sizeof (char *) - pglob->gl_pathc |
1399 | < pglob->gl_offs + nfound + 1) | |
90bb2039 UD |
1400 | goto memory_error; |
1401 | ||
d1dddedf | 1402 | new_gl_pathv |
c66c9082 AZ |
1403 | = realloc (pglob->gl_pathv, |
1404 | (pglob->gl_pathc + pglob->gl_offs + nfound + 1) | |
1405 | * sizeof (char *)); | |
1406 | ||
d1dddedf | 1407 | if (new_gl_pathv == NULL) |
f1122ec3 UD |
1408 | { |
1409 | memory_error: | |
1410 | while (1) | |
1411 | { | |
1412 | struct globnames *old = names; | |
1413 | for (size_t i = 0; i < cur; ++i) | |
1414 | free (names->name[i]); | |
1415 | names = names->next; | |
f01e4069 UD |
1416 | /* NB: we will not leak memory here if we exit without |
1417 | freeing the current block assigned to OLD. At least | |
1418 | the very first block is always allocated on the stack | |
1419 | and this is the block assigned to OLD here. */ | |
f1122ec3 | 1420 | if (names == NULL) |
f01e4069 | 1421 | { |
c66c9082 | 1422 | assert (old == init_names); |
f01e4069 UD |
1423 | break; |
1424 | } | |
f1122ec3 UD |
1425 | cur = names->count; |
1426 | if (old == names_alloca) | |
1427 | names_alloca = names; | |
1428 | else | |
1429 | free (old); | |
1430 | } | |
1431 | result = GLOB_NOSPACE; | |
1432 | } | |
1433 | else | |
1434 | { | |
1435 | while (1) | |
1436 | { | |
1437 | struct globnames *old = names; | |
1438 | for (size_t i = 0; i < cur; ++i) | |
1439 | new_gl_pathv[pglob->gl_offs + pglob->gl_pathc++] | |
1440 | = names->name[i]; | |
1441 | names = names->next; | |
f01e4069 UD |
1442 | /* NB: we will not leak memory here if we exit without |
1443 | freeing the current block assigned to OLD. At least | |
1444 | the very first block is always allocated on the stack | |
1445 | and this is the block assigned to OLD here. */ | |
f1122ec3 | 1446 | if (names == NULL) |
f01e4069 | 1447 | { |
c66c9082 | 1448 | assert (old == init_names); |
f01e4069 UD |
1449 | break; |
1450 | } | |
f1122ec3 UD |
1451 | cur = names->count; |
1452 | if (old == names_alloca) | |
1453 | names_alloca = names; | |
1454 | else | |
1455 | free (old); | |
1456 | } | |
1457 | ||
1458 | pglob->gl_pathv = new_gl_pathv; | |
28f540f4 | 1459 | |
f1122ec3 | 1460 | pglob->gl_pathv[pglob->gl_offs + pglob->gl_pathc] = NULL; |
28f540f4 | 1461 | |
f1122ec3 UD |
1462 | pglob->gl_flags = flags; |
1463 | } | |
61eb22d3 | 1464 | } |
28f540f4 | 1465 | |
a9ddb793 | 1466 | if (stream != NULL) |
6e4c40ba | 1467 | { |
f1122ec3 | 1468 | save = errno; |
a1ffb40e | 1469 | if (__glibc_unlikely (flags & GLOB_ALTDIRFUNC)) |
6e4c40ba UD |
1470 | (*pglob->gl_closedir) (stream); |
1471 | else | |
49a0ba27 | 1472 | closedir (stream); |
f1122ec3 | 1473 | __set_errno (save); |
6e4c40ba | 1474 | } |
28f540f4 | 1475 | |
f1122ec3 | 1476 | return result; |
28f540f4 | 1477 | } |