1 /*
2 +----------------------------------------------------------------------+
3 | Copyright (c) The PHP Group |
4 +----------------------------------------------------------------------+
5 | This source file is subject to version 3.01 of the PHP license, |
6 | that is bundled with this package in the file LICENSE, and is |
7 | available through the world-wide-web at the following url: |
8 | https://www.php.net/license/3_01.txt |
9 | If you did not receive a copy of the PHP license and are unable to |
10 | obtain it through the world-wide-web, please send a note to |
11 | license@php.net so we can mail you a copy immediately. |
12 +----------------------------------------------------------------------+
13 | Author: Jim Winstead <jimw@php.net> |
14 +----------------------------------------------------------------------+
15 */
16
17 #include "php.h"
18 #include "fopen_wrappers.h"
19 #include "php_globals.h"
20
21 #include <stdlib.h>
22 #include <sys/stat.h>
23 #include <string.h>
24 #include <errno.h>
25 #include <ctype.h>
26 #include <time.h>
27
28 #if HAVE_UNISTD_H
29 # include <unistd.h>
30 #endif
31
32 #if HAVE_SYS_PARAM_H
33 # include <sys/param.h>
34 #endif
35
36 #if HAVE_SYS_VFS_H
37 # include <sys/vfs.h>
38 #endif
39
40 #ifdef OS2
41 # define INCL_DOS
42 # include <os2.h>
43 #endif
44
45 #if defined(__APPLE__)
46 /*
47 Apple statvfs has an interger overflow in libc copying to statvfs.
48 cvt_statfs_to_statvfs(struct statfs *from, struct statvfs *to) {
49 to->f_blocks = (fsblkcnt_t)from->f_blocks;
50 */
51 # undef HAVE_SYS_STATVFS_H
52 # undef HAVE_STATVFS
53 #endif
54
55 #if defined(HAVE_SYS_STATVFS_H) && defined(HAVE_STATVFS)
56 # include <sys/statvfs.h>
57 #elif defined(HAVE_SYS_STATFS_H) && defined(HAVE_STATFS)
58 # include <sys/statfs.h>
59 #elif defined(HAVE_SYS_MOUNT_H) && defined(HAVE_STATFS)
60 # include <sys/mount.h>
61 #endif
62
63 #if HAVE_PWD_H
64 # ifdef PHP_WIN32
65 # include "win32/pwd.h"
66 # else
67 # include <pwd.h>
68 # endif
69 #endif
70
71 #if HAVE_GRP_H
72 # include <grp.h>
73 #endif
74
75 #if HAVE_UTIME
76 # ifdef PHP_WIN32
77 # include <sys/utime.h>
78 # else
79 # include <utime.h>
80 # endif
81 #endif
82
83 #ifdef PHP_WIN32
84 #include "win32/winutil.h"
85 #endif
86
87 #include "basic_functions.h"
88 #include "php_filestat.h"
89
PHP_RINIT_FUNCTION(filestat)90 PHP_RINIT_FUNCTION(filestat) /* {{{ */
91 {
92 BG(CurrentStatFile)=NULL;
93 BG(CurrentLStatFile)=NULL;
94 return SUCCESS;
95 }
96 /* }}} */
97
PHP_RSHUTDOWN_FUNCTION(filestat)98 PHP_RSHUTDOWN_FUNCTION(filestat) /* {{{ */
99 {
100 if (BG(CurrentStatFile)) {
101 zend_string_release(BG(CurrentStatFile));
102 BG(CurrentStatFile) = NULL;
103 }
104 if (BG(CurrentLStatFile)) {
105 zend_string_release(BG(CurrentLStatFile));
106 BG(CurrentLStatFile) = NULL;
107 }
108 return SUCCESS;
109 }
110 /* }}} */
111
php_disk_total_space(char * path,double * space)112 static int php_disk_total_space(char *path, double *space) /* {{{ */
113 #if defined(WINDOWS) /* {{{ */
114 {
115 ULARGE_INTEGER FreeBytesAvailableToCaller;
116 ULARGE_INTEGER TotalNumberOfBytes;
117 ULARGE_INTEGER TotalNumberOfFreeBytes;
118 PHP_WIN32_IOUTIL_INIT_W(path)
119
120 if (GetDiskFreeSpaceExW(pathw, &FreeBytesAvailableToCaller, &TotalNumberOfBytes, &TotalNumberOfFreeBytes) == 0) {
121 char *err = php_win_err();
122 php_error_docref(NULL, E_WARNING, "%s", err);
123 php_win_err_free(err);
124 PHP_WIN32_IOUTIL_CLEANUP_W()
125 return FAILURE;
126 }
127
128 /* i know - this is ugly, but i works <thies@thieso.net> */
129 *space = TotalNumberOfBytes.HighPart * (double) (((zend_ulong)1) << 31) * 2.0 + TotalNumberOfBytes.LowPart;
130
131 PHP_WIN32_IOUTIL_CLEANUP_W()
132
133 return SUCCESS;
134 }
135 /* }}} */
136 #elif defined(OS2) /* {{{ */
137 {
138 double bytestotal = 0;
139 FSALLOCATE fsinfo;
140 char drive = path[0] & 95;
141
142 if (DosQueryFSInfo( drive ? drive - 64 : 0, FSIL_ALLOC, &fsinfo, sizeof( fsinfo ) ) == 0) {
143 bytestotal = (double)fsinfo.cbSector * fsinfo.cSectorUnit * fsinfo.cUnit;
144 *space = bytestotal;
145 return SUCCESS;
146 }
147 return FAILURE;
148 }
149 /* }}} */
150 #else /* {{{ if !defined(OS2) && !defined(WINDOWS) */
151 {
152 double bytestotal = 0;
153 #if defined(HAVE_SYS_STATVFS_H) && defined(HAVE_STATVFS)
154 struct statvfs buf;
155 #elif (defined(HAVE_SYS_STATFS_H) || defined(HAVE_SYS_MOUNT_H)) && defined(HAVE_STATFS)
156 struct statfs buf;
157 #endif
158
159 #if defined(HAVE_SYS_STATVFS_H) && defined(HAVE_STATVFS)
160 if (statvfs(path, &buf)) {
161 php_error_docref(NULL, E_WARNING, "%s", strerror(errno));
162 return FAILURE;
163 }
164 if (buf.f_frsize) {
165 bytestotal = (((double)buf.f_blocks) * ((double)buf.f_frsize));
166 } else {
167 bytestotal = (((double)buf.f_blocks) * ((double)buf.f_bsize));
168 }
169
170 #elif (defined(HAVE_SYS_STATFS_H) || defined(HAVE_SYS_MOUNT_H)) && defined(HAVE_STATFS)
171 if (statfs(path, &buf)) {
172 php_error_docref(NULL, E_WARNING, "%s", strerror(errno));
173 return FAILURE;
174 }
175 bytestotal = (((double)buf.f_bsize) * ((double)buf.f_blocks));
176 #endif
177
178 *space = bytestotal;
179 return SUCCESS;
180 }
181 #endif
182 /* }}} */
183 /* }}} */
184
185 /* {{{ Get total disk space for filesystem that path is on */
PHP_FUNCTION(disk_total_space)186 PHP_FUNCTION(disk_total_space)
187 {
188 double bytestotal;
189 char *path, fullpath[MAXPATHLEN];
190 size_t path_len;
191
192 ZEND_PARSE_PARAMETERS_START(1, 1)
193 Z_PARAM_PATH(path, path_len)
194 ZEND_PARSE_PARAMETERS_END();
195
196 if (!expand_filepath(path, fullpath)) {
197 RETURN_FALSE;
198 }
199
200 if (php_check_open_basedir(fullpath)) {
201 RETURN_FALSE;
202 }
203
204 if (php_disk_total_space(fullpath, &bytestotal) == SUCCESS) {
205 RETURN_DOUBLE(bytestotal);
206 }
207 RETURN_FALSE;
208 }
209 /* }}} */
210
php_disk_free_space(char * path,double * space)211 static int php_disk_free_space(char *path, double *space) /* {{{ */
212 #if defined(WINDOWS) /* {{{ */
213 {
214 ULARGE_INTEGER FreeBytesAvailableToCaller;
215 ULARGE_INTEGER TotalNumberOfBytes;
216 ULARGE_INTEGER TotalNumberOfFreeBytes;
217 PHP_WIN32_IOUTIL_INIT_W(path)
218
219 if (GetDiskFreeSpaceExW(pathw, &FreeBytesAvailableToCaller, &TotalNumberOfBytes, &TotalNumberOfFreeBytes) == 0) {
220 char *err = php_win_err();
221 php_error_docref(NULL, E_WARNING, "%s", err);
222 php_win_err_free(err);
223 PHP_WIN32_IOUTIL_CLEANUP_W()
224 return FAILURE;
225 }
226
227 *space = FreeBytesAvailableToCaller.HighPart * (double) (1ULL << 32) + FreeBytesAvailableToCaller.LowPart;
228
229 PHP_WIN32_IOUTIL_CLEANUP_W()
230
231 return SUCCESS;
232 }
233 /* }}} */
234 #elif defined(OS2) /* {{{ */
235 {
236 double bytesfree = 0;
237 FSALLOCATE fsinfo;
238 char drive = path[0] & 95;
239
240 if (DosQueryFSInfo( drive ? drive - 64 : 0, FSIL_ALLOC, &fsinfo, sizeof( fsinfo ) ) == 0) {
241 bytesfree = (double)fsinfo.cbSector * fsinfo.cSectorUnit * fsinfo.cUnitAvail;
242 *space = bytesfree;
243 return SUCCESS;
244 }
245 return FAILURE;
246 }
247 /* }}} */
248 #else /* {{{ if !defined(OS2) && !defined(WINDOWS) */
249 {
250 double bytesfree = 0;
251 #if defined(HAVE_SYS_STATVFS_H) && defined(HAVE_STATVFS)
252 struct statvfs buf;
253 #elif (defined(HAVE_SYS_STATFS_H) || defined(HAVE_SYS_MOUNT_H)) && defined(HAVE_STATFS)
254 struct statfs buf;
255 #endif
256
257 #if defined(HAVE_SYS_STATVFS_H) && defined(HAVE_STATVFS)
258 if (statvfs(path, &buf)) {
259 php_error_docref(NULL, E_WARNING, "%s", strerror(errno));
260 return FAILURE;
261 }
262 if (buf.f_frsize) {
263 bytesfree = (((double)buf.f_bavail) * ((double)buf.f_frsize));
264 } else {
265 bytesfree = (((double)buf.f_bavail) * ((double)buf.f_bsize));
266 }
267 #elif (defined(HAVE_SYS_STATFS_H) || defined(HAVE_SYS_MOUNT_H)) && defined(HAVE_STATFS)
268 if (statfs(path, &buf)) {
269 php_error_docref(NULL, E_WARNING, "%s", strerror(errno));
270 return FAILURE;
271 }
272 bytesfree = (((double)buf.f_bsize) * ((double)buf.f_bavail));
273 #endif
274
275 *space = bytesfree;
276 return SUCCESS;
277 }
278 #endif
279 /* }}} */
280 /* }}} */
281
282 /* {{{ Get free disk space for filesystem that path is on */
PHP_FUNCTION(disk_free_space)283 PHP_FUNCTION(disk_free_space)
284 {
285 double bytesfree;
286 char *path, fullpath[MAXPATHLEN];
287 size_t path_len;
288
289 ZEND_PARSE_PARAMETERS_START(1, 1)
290 Z_PARAM_PATH(path, path_len)
291 ZEND_PARSE_PARAMETERS_END();
292
293 if (!expand_filepath(path, fullpath)) {
294 RETURN_FALSE;
295 }
296
297 if (php_check_open_basedir(fullpath)) {
298 RETURN_FALSE;
299 }
300
301 if (php_disk_free_space(fullpath, &bytesfree) == SUCCESS) {
302 RETURN_DOUBLE(bytesfree);
303 }
304 RETURN_FALSE;
305 }
306 /* }}} */
307
308 #ifndef PHP_WIN32
php_get_gid_by_name(const char * name,gid_t * gid)309 PHPAPI int php_get_gid_by_name(const char *name, gid_t *gid)
310 {
311 #if defined(ZTS) && defined(HAVE_GETGRNAM_R) && defined(_SC_GETGR_R_SIZE_MAX)
312 struct group gr;
313 struct group *retgrptr;
314 long grbuflen = sysconf(_SC_GETGR_R_SIZE_MAX);
315 char *grbuf;
316
317 if (grbuflen < 1) {
318 return FAILURE;
319 }
320
321 grbuf = emalloc(grbuflen);
322 if (getgrnam_r(name, &gr, grbuf, grbuflen, &retgrptr) != 0 || retgrptr == NULL) {
323 efree(grbuf);
324 return FAILURE;
325 }
326 efree(grbuf);
327 *gid = gr.gr_gid;
328 #else
329 struct group *gr = getgrnam(name);
330
331 if (!gr) {
332 return FAILURE;
333 }
334 *gid = gr->gr_gid;
335 #endif
336 return SUCCESS;
337 }
338 #endif
339
php_do_chgrp(INTERNAL_FUNCTION_PARAMETERS,int do_lchgrp)340 static void php_do_chgrp(INTERNAL_FUNCTION_PARAMETERS, int do_lchgrp) /* {{{ */
341 {
342 char *filename;
343 size_t filename_len;
344 zend_string *group_str;
345 zend_long group_long;
346 #if !defined(WINDOWS)
347 gid_t gid;
348 int ret;
349 #endif
350 php_stream_wrapper *wrapper;
351
352 ZEND_PARSE_PARAMETERS_START(2, 2)
353 Z_PARAM_PATH(filename, filename_len)
354 Z_PARAM_STR_OR_LONG(group_str, group_long)
355 ZEND_PARSE_PARAMETERS_END();
356
357 wrapper = php_stream_locate_url_wrapper(filename, NULL, 0);
358 if(wrapper != &php_plain_files_wrapper || strncasecmp("file://", filename, 7) == 0) {
359 if(wrapper && wrapper->wops->stream_metadata) {
360 int option;
361 void *value;
362 if (group_str) {
363 option = PHP_STREAM_META_GROUP_NAME;
364 value = ZSTR_VAL(group_str);
365 } else {
366 option = PHP_STREAM_META_GROUP;
367 value = &group_long;
368 }
369
370 if(wrapper->wops->stream_metadata(wrapper, filename, option, value, NULL)) {
371 RETURN_TRUE;
372 } else {
373 RETURN_FALSE;
374 }
375 } else {
376 #if !defined(WINDOWS)
377 /* On Windows, we expect regular chgrp to fail silently by default */
378 php_error_docref(NULL, E_WARNING, "Can not call chgrp() for a non-standard stream");
379 #endif
380 RETURN_FALSE;
381 }
382 }
383
384 #if defined(WINDOWS)
385 /* We have no native chgrp on Windows, nothing left to do if stream doesn't have own implementation */
386 RETURN_FALSE;
387 #else
388 if (group_str) {
389 if (php_get_gid_by_name(ZSTR_VAL(group_str), &gid) != SUCCESS) {
390 php_error_docref(NULL, E_WARNING, "Unable to find gid for %s", ZSTR_VAL(group_str));
391 RETURN_FALSE;
392 }
393 } else {
394 gid = (gid_t) group_long;
395 }
396
397 /* Check the basedir */
398 if (php_check_open_basedir(filename)) {
399 RETURN_FALSE;
400 }
401
402 if (do_lchgrp) {
403 #if HAVE_LCHOWN
404 ret = VCWD_LCHOWN(filename, -1, gid);
405 #endif
406 } else {
407 ret = VCWD_CHOWN(filename, -1, gid);
408 }
409 if (ret == -1) {
410 php_error_docref(NULL, E_WARNING, "%s", strerror(errno));
411 RETURN_FALSE;
412 }
413 RETURN_TRUE;
414 #endif
415 }
416 /* }}} */
417
418 /* {{{ Change file group */
PHP_FUNCTION(chgrp)419 PHP_FUNCTION(chgrp)
420 {
421 php_do_chgrp(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
422 }
423 /* }}} */
424
425 /* {{{ Change symlink group */
426 #if HAVE_LCHOWN
PHP_FUNCTION(lchgrp)427 PHP_FUNCTION(lchgrp)
428 {
429 php_do_chgrp(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
430 }
431 #endif
432 /* }}} */
433
434 #ifndef PHP_WIN32
php_get_uid_by_name(const char * name,uid_t * uid)435 PHPAPI uid_t php_get_uid_by_name(const char *name, uid_t *uid)
436 {
437 #if defined(ZTS) && defined(_SC_GETPW_R_SIZE_MAX) && defined(HAVE_GETPWNAM_R)
438 struct passwd pw;
439 struct passwd *retpwptr = NULL;
440 long pwbuflen = sysconf(_SC_GETPW_R_SIZE_MAX);
441 char *pwbuf;
442
443 if (pwbuflen < 1) {
444 return FAILURE;
445 }
446
447 pwbuf = emalloc(pwbuflen);
448 if (getpwnam_r(name, &pw, pwbuf, pwbuflen, &retpwptr) != 0 || retpwptr == NULL) {
449 efree(pwbuf);
450 return FAILURE;
451 }
452 efree(pwbuf);
453 *uid = pw.pw_uid;
454 #else
455 struct passwd *pw = getpwnam(name);
456
457 if (!pw) {
458 return FAILURE;
459 }
460 *uid = pw->pw_uid;
461 #endif
462 return SUCCESS;
463 }
464 #endif
465
php_do_chown(INTERNAL_FUNCTION_PARAMETERS,int do_lchown)466 static void php_do_chown(INTERNAL_FUNCTION_PARAMETERS, int do_lchown) /* {{{ */
467 {
468 char *filename;
469 size_t filename_len;
470 zend_string *user_str;
471 zend_long user_long;
472 #if !defined(WINDOWS)
473 uid_t uid;
474 int ret;
475 #endif
476 php_stream_wrapper *wrapper;
477
478 ZEND_PARSE_PARAMETERS_START(2, 2)
479 Z_PARAM_PATH(filename, filename_len)
480 Z_PARAM_STR_OR_LONG(user_str, user_long)
481 ZEND_PARSE_PARAMETERS_END();
482
483 wrapper = php_stream_locate_url_wrapper(filename, NULL, 0);
484 if(wrapper != &php_plain_files_wrapper || strncasecmp("file://", filename, 7) == 0) {
485 if(wrapper && wrapper->wops->stream_metadata) {
486 int option;
487 void *value;
488 if (user_str) {
489 option = PHP_STREAM_META_OWNER_NAME;
490 value = ZSTR_VAL(user_str);
491 } else {
492 option = PHP_STREAM_META_OWNER;
493 value = &user_long;
494 }
495
496 if(wrapper->wops->stream_metadata(wrapper, filename, option, value, NULL)) {
497 RETURN_TRUE;
498 } else {
499 RETURN_FALSE;
500 }
501 } else {
502 #if !defined(WINDOWS)
503 /* On Windows, we expect regular chown to fail silently by default */
504 php_error_docref(NULL, E_WARNING, "Can not call chown() for a non-standard stream");
505 #endif
506 RETURN_FALSE;
507 }
508 }
509
510 #if defined(WINDOWS)
511 /* We have no native chown on Windows, nothing left to do if stream doesn't have own implementation */
512 RETURN_FALSE;
513 #else
514
515 if (user_str) {
516 if (php_get_uid_by_name(ZSTR_VAL(user_str), &uid) != SUCCESS) {
517 php_error_docref(NULL, E_WARNING, "Unable to find uid for %s", ZSTR_VAL(user_str));
518 RETURN_FALSE;
519 }
520 } else {
521 uid = (uid_t) user_long;
522 }
523
524 /* Check the basedir */
525 if (php_check_open_basedir(filename)) {
526 RETURN_FALSE;
527 }
528
529 if (do_lchown) {
530 #if HAVE_LCHOWN
531 ret = VCWD_LCHOWN(filename, uid, -1);
532 #endif
533 } else {
534 ret = VCWD_CHOWN(filename, uid, -1);
535 }
536 if (ret == -1) {
537 php_error_docref(NULL, E_WARNING, "%s", strerror(errno));
538 RETURN_FALSE;
539 }
540 RETURN_TRUE;
541 #endif
542 }
543 /* }}} */
544
545
546 /* {{{ Change file owner */
PHP_FUNCTION(chown)547 PHP_FUNCTION(chown)
548 {
549 php_do_chown(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
550 }
551 /* }}} */
552
553 /* {{{ Change file owner */
554 #if HAVE_LCHOWN
PHP_FUNCTION(lchown)555 PHP_FUNCTION(lchown)
556 {
557 RETVAL_TRUE;
558 php_do_chown(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
559 }
560 #endif
561 /* }}} */
562
563 /* {{{ Change file mode */
PHP_FUNCTION(chmod)564 PHP_FUNCTION(chmod)
565 {
566 char *filename;
567 size_t filename_len;
568 zend_long mode;
569 int ret;
570 mode_t imode;
571 php_stream_wrapper *wrapper;
572
573 ZEND_PARSE_PARAMETERS_START(2, 2)
574 Z_PARAM_PATH(filename, filename_len)
575 Z_PARAM_LONG(mode)
576 ZEND_PARSE_PARAMETERS_END();
577
578 wrapper = php_stream_locate_url_wrapper(filename, NULL, 0);
579 if(wrapper != &php_plain_files_wrapper || strncasecmp("file://", filename, 7) == 0) {
580 if(wrapper && wrapper->wops->stream_metadata) {
581 if(wrapper->wops->stream_metadata(wrapper, filename, PHP_STREAM_META_ACCESS, &mode, NULL)) {
582 RETURN_TRUE;
583 } else {
584 RETURN_FALSE;
585 }
586 } else {
587 php_error_docref(NULL, E_WARNING, "Can not call chmod() for a non-standard stream");
588 RETURN_FALSE;
589 }
590 }
591
592 /* Check the basedir */
593 if (php_check_open_basedir(filename)) {
594 RETURN_FALSE;
595 }
596
597 imode = (mode_t) mode;
598
599 ret = VCWD_CHMOD(filename, imode);
600 if (ret == -1) {
601 php_error_docref(NULL, E_WARNING, "%s", strerror(errno));
602 RETURN_FALSE;
603 }
604 RETURN_TRUE;
605 }
606 /* }}} */
607
608 #if HAVE_UTIME
609 /* {{{ Set modification time of file */
PHP_FUNCTION(touch)610 PHP_FUNCTION(touch)
611 {
612 char *filename;
613 size_t filename_len;
614 zend_long filetime = 0, fileatime = 0;
615 bool filetime_is_null = 1, fileatime_is_null = 1;
616 int ret;
617 FILE *file;
618 struct utimbuf newtimebuf;
619 struct utimbuf *newtime = &newtimebuf;
620 php_stream_wrapper *wrapper;
621
622 ZEND_PARSE_PARAMETERS_START(1, 3)
623 Z_PARAM_PATH(filename, filename_len)
624 Z_PARAM_OPTIONAL
625 Z_PARAM_LONG_OR_NULL(filetime, filetime_is_null)
626 Z_PARAM_LONG_OR_NULL(fileatime, fileatime_is_null)
627 ZEND_PARSE_PARAMETERS_END();
628
629 if (!filename_len) {
630 RETURN_FALSE;
631 }
632
633 if (filetime_is_null && fileatime_is_null) {
634 newtime = NULL;
635 } else if (!filetime_is_null && fileatime_is_null) {
636 newtime->modtime = newtime->actime = filetime;
637 } else if (filetime_is_null && !fileatime_is_null) {
638 zend_argument_value_error(2, "cannot be null when argument #3 ($atime) is an integer");
639 RETURN_THROWS();
640 } else {
641 newtime->modtime = filetime;
642 newtime->actime = fileatime;
643 }
644
645 wrapper = php_stream_locate_url_wrapper(filename, NULL, 0);
646 if(wrapper != &php_plain_files_wrapper || strncasecmp("file://", filename, 7) == 0) {
647 if(wrapper && wrapper->wops->stream_metadata) {
648 if(wrapper->wops->stream_metadata(wrapper, filename, PHP_STREAM_META_TOUCH, newtime, NULL)) {
649 RETURN_TRUE;
650 } else {
651 RETURN_FALSE;
652 }
653 } else {
654 php_stream *stream;
655 if(!filetime_is_null || !fileatime_is_null) {
656 php_error_docref(NULL, E_WARNING, "Can not call touch() for a non-standard stream");
657 RETURN_FALSE;
658 }
659 stream = php_stream_open_wrapper_ex(filename, "c", REPORT_ERRORS, NULL, NULL);
660 if(stream != NULL) {
661 php_stream_close(stream);
662 RETURN_TRUE;
663 } else {
664 RETURN_FALSE;
665 }
666 }
667 }
668
669 /* Check the basedir */
670 if (php_check_open_basedir(filename)) {
671 RETURN_FALSE;
672 }
673
674 /* create the file if it doesn't exist already */
675 if (VCWD_ACCESS(filename, F_OK) != 0) {
676 file = VCWD_FOPEN(filename, "w");
677 if (file == NULL) {
678 php_error_docref(NULL, E_WARNING, "Unable to create file %s because %s", filename, strerror(errno));
679 RETURN_FALSE;
680 }
681 fclose(file);
682 }
683
684 ret = VCWD_UTIME(filename, newtime);
685 if (ret == -1) {
686 php_error_docref(NULL, E_WARNING, "Utime failed: %s", strerror(errno));
687 RETURN_FALSE;
688 }
689 RETURN_TRUE;
690 }
691 /* }}} */
692 #endif
693
694 /* {{{ php_clear_stat_cache() */
php_clear_stat_cache(bool clear_realpath_cache,const char * filename,size_t filename_len)695 PHPAPI void php_clear_stat_cache(bool clear_realpath_cache, const char *filename, size_t filename_len)
696 {
697 /* always clear CurrentStatFile and CurrentLStatFile even if filename is not NULL
698 * as it may contain outdated data (e.g. "nlink" for a directory when deleting a file
699 * in this directory, as shown by lstat_stat_variation9.phpt) */
700 if (BG(CurrentStatFile)) {
701 zend_string_release(BG(CurrentStatFile));
702 BG(CurrentStatFile) = NULL;
703 }
704 if (BG(CurrentLStatFile)) {
705 zend_string_release(BG(CurrentLStatFile));
706 BG(CurrentLStatFile) = NULL;
707 }
708 if (clear_realpath_cache) {
709 if (filename != NULL) {
710 realpath_cache_del(filename, filename_len);
711 } else {
712 realpath_cache_clean();
713 }
714 }
715 }
716 /* }}} */
717
718 /* {{{ Clear file stat cache */
PHP_FUNCTION(clearstatcache)719 PHP_FUNCTION(clearstatcache)
720 {
721 bool clear_realpath_cache = 0;
722 char *filename = NULL;
723 size_t filename_len = 0;
724
725 ZEND_PARSE_PARAMETERS_START(0, 2)
726 Z_PARAM_OPTIONAL
727 Z_PARAM_BOOL(clear_realpath_cache)
728 Z_PARAM_PATH(filename, filename_len)
729 ZEND_PARSE_PARAMETERS_END();
730
731 php_clear_stat_cache(clear_realpath_cache, filename, filename_len);
732 }
733 /* }}} */
734
735 #define IS_LINK_OPERATION(__t) ((__t) == FS_TYPE || (__t) == FS_IS_LINK || (__t) == FS_LSTAT || (__t) == FS_LPERMS)
736 #define IS_EXISTS_CHECK(__t) ((__t) == FS_EXISTS || (__t) == FS_IS_W || (__t) == FS_IS_R || (__t) == FS_IS_X || (__t) == FS_IS_FILE || (__t) == FS_IS_DIR || (__t) == FS_IS_LINK || (__t) == FS_LPERMS)
737 #define IS_ABLE_CHECK(__t) ((__t) == FS_IS_R || (__t) == FS_IS_W || (__t) == FS_IS_X)
738 #define IS_ACCESS_CHECK(__t) (IS_ABLE_CHECK(type) || (__t) == FS_EXISTS)
739
740 /* {{{ php_stat */
php_stat(zend_string * filename,int type,zval * return_value)741 PHPAPI void php_stat(zend_string *filename, int type, zval *return_value)
742 {
743 zend_stat_t *stat_sb;
744 php_stream_statbuf ssb;
745 int flags = 0, rmask=S_IROTH, wmask=S_IWOTH, xmask=S_IXOTH; /* access rights defaults to other */
746 const char *local = NULL;
747 php_stream_wrapper *wrapper = NULL;
748
749 if (IS_ACCESS_CHECK(type)) {
750 if (!ZSTR_LEN(filename) || CHECK_NULL_PATH(ZSTR_VAL(filename), ZSTR_LEN(filename))) {
751 if (ZSTR_LEN(filename) && !IS_EXISTS_CHECK(type)) {
752 php_error_docref(NULL, E_WARNING, "Filename contains null byte");
753 }
754 RETURN_FALSE;
755 }
756
757 if ((wrapper = php_stream_locate_url_wrapper(ZSTR_VAL(filename), &local, 0)) == &php_plain_files_wrapper
758 && php_check_open_basedir(local)) {
759 RETURN_FALSE;
760 }
761
762 if (wrapper == &php_plain_files_wrapper) {
763
764 switch (type) {
765 #ifdef F_OK
766 case FS_EXISTS:
767 RETURN_BOOL(VCWD_ACCESS(local, F_OK) == 0);
768 break;
769 #endif
770 #ifdef W_OK
771 case FS_IS_W:
772 RETURN_BOOL(VCWD_ACCESS(local, W_OK) == 0);
773 break;
774 #endif
775 #ifdef R_OK
776 case FS_IS_R:
777 RETURN_BOOL(VCWD_ACCESS(local, R_OK) == 0);
778 break;
779 #endif
780 #ifdef X_OK
781 case FS_IS_X:
782 RETURN_BOOL(VCWD_ACCESS(local, X_OK) == 0);
783 break;
784 #endif
785 }
786 }
787 }
788
789 if (IS_LINK_OPERATION(type)) {
790 flags |= PHP_STREAM_URL_STAT_LINK;
791 }
792 if (IS_EXISTS_CHECK(type)) {
793 flags |= PHP_STREAM_URL_STAT_QUIET;
794 }
795
796 do {
797 /* Try to hit the cache first */
798 if (flags & PHP_STREAM_URL_STAT_LINK) {
799 if (filename == BG(CurrentLStatFile)
800 || (BG(CurrentLStatFile)
801 && zend_string_equal_content(filename, BG(CurrentLStatFile)))) {
802 memcpy(&ssb, &BG(lssb), sizeof(php_stream_statbuf));
803 break;
804 }
805 } else {
806 if (filename == BG(CurrentStatFile)
807 || (BG(CurrentStatFile)
808 && zend_string_equal_content(filename, BG(CurrentStatFile)))) {
809 memcpy(&ssb, &BG(ssb), sizeof(php_stream_statbuf));
810 break;
811 }
812 }
813
814 if (!wrapper) {
815 if (!ZSTR_LEN(filename) || CHECK_NULL_PATH(ZSTR_VAL(filename), ZSTR_LEN(filename))) {
816 if (ZSTR_LEN(filename) && !IS_EXISTS_CHECK(type)) {
817 php_error_docref(NULL, E_WARNING, "Filename contains null byte");
818 }
819 RETURN_FALSE;
820 }
821
822 if ((wrapper = php_stream_locate_url_wrapper(ZSTR_VAL(filename), &local, 0)) == &php_plain_files_wrapper
823 && php_check_open_basedir(local)) {
824 RETURN_FALSE;
825 }
826 }
827
828 if (!wrapper
829 || !wrapper->wops->url_stat
830 || wrapper->wops->url_stat(wrapper, local, flags | PHP_STREAM_URL_STAT_IGNORE_OPEN_BASEDIR, &ssb, NULL)) {
831 /* Error Occurred */
832 if (!IS_EXISTS_CHECK(type)) {
833 php_error_docref(NULL, E_WARNING, "%sstat failed for %s", IS_LINK_OPERATION(type) ? "L" : "", ZSTR_VAL(filename));
834 }
835 RETURN_FALSE;
836 }
837
838 /* Drop into cache */
839 if (flags & PHP_STREAM_URL_STAT_LINK) {
840 if (BG(CurrentLStatFile)) {
841 zend_string_release(BG(CurrentLStatFile));
842 }
843 BG(CurrentLStatFile) = zend_string_copy(filename);
844 memcpy(&BG(lssb), &ssb, sizeof(php_stream_statbuf));
845 }
846 if (!(flags & PHP_STREAM_URL_STAT_LINK)
847 || !S_ISLNK(ssb.sb.st_mode)) {
848 if (BG(CurrentStatFile)) {
849 zend_string_release(BG(CurrentStatFile));
850 }
851 BG(CurrentStatFile) = zend_string_copy(filename);
852 memcpy(&BG(ssb), &ssb, sizeof(php_stream_statbuf));
853 }
854 } while (0);
855
856 stat_sb = &ssb.sb;
857
858 if (type >= FS_IS_W && type <= FS_IS_X) {
859 if(ssb.sb.st_uid==getuid()) {
860 rmask=S_IRUSR;
861 wmask=S_IWUSR;
862 xmask=S_IXUSR;
863 } else if(ssb.sb.st_gid==getgid()) {
864 rmask=S_IRGRP;
865 wmask=S_IWGRP;
866 xmask=S_IXGRP;
867 } else {
868 int groups, n, i;
869 gid_t *gids;
870
871 groups = getgroups(0, NULL);
872 if(groups > 0) {
873 gids=(gid_t *)safe_emalloc(groups, sizeof(gid_t), 0);
874 n=getgroups(groups, gids);
875 for(i=0;i<n;i++){
876 if(ssb.sb.st_gid==gids[i]) {
877 rmask=S_IRGRP;
878 wmask=S_IWGRP;
879 xmask=S_IXGRP;
880 break;
881 }
882 }
883 efree(gids);
884 }
885 }
886 }
887
888 if (IS_ABLE_CHECK(type) && getuid() == 0) {
889 /* root has special perms on plain_wrapper */
890 if (wrapper == &php_plain_files_wrapper) {
891 if (type == FS_IS_X) {
892 xmask = S_IXROOT;
893 } else {
894 RETURN_TRUE;
895 }
896 }
897 }
898
899 switch (type) {
900 case FS_PERMS:
901 case FS_LPERMS:
902 RETURN_LONG((zend_long)ssb.sb.st_mode);
903 case FS_INODE:
904 RETURN_LONG((zend_long)ssb.sb.st_ino);
905 case FS_SIZE:
906 RETURN_LONG((zend_long)ssb.sb.st_size);
907 case FS_OWNER:
908 RETURN_LONG((zend_long)ssb.sb.st_uid);
909 case FS_GROUP:
910 RETURN_LONG((zend_long)ssb.sb.st_gid);
911 case FS_ATIME:
912 RETURN_LONG((zend_long)ssb.sb.st_atime);
913 case FS_MTIME:
914 RETURN_LONG((zend_long)ssb.sb.st_mtime);
915 case FS_CTIME:
916 RETURN_LONG((zend_long)ssb.sb.st_ctime);
917 case FS_TYPE:
918 if (S_ISLNK(ssb.sb.st_mode)) {
919 RETURN_STRING("link");
920 }
921 switch(ssb.sb.st_mode & S_IFMT) {
922 case S_IFIFO: RETURN_STRING("fifo");
923 case S_IFCHR: RETURN_STRING("char");
924 case S_IFDIR: RETURN_STRING("dir");
925 case S_IFBLK: RETURN_STRING("block");
926 case S_IFREG: RETURN_STRING("file");
927 #if defined(S_IFSOCK) && !defined(PHP_WIN32)
928 case S_IFSOCK: RETURN_STRING("socket");
929 #endif
930 }
931 php_error_docref(NULL, E_NOTICE, "Unknown file type (%d)", ssb.sb.st_mode&S_IFMT);
932 RETURN_STRING("unknown");
933 case FS_IS_W:
934 RETURN_BOOL((ssb.sb.st_mode & wmask) != 0);
935 case FS_IS_R:
936 RETURN_BOOL((ssb.sb.st_mode&rmask)!=0);
937 case FS_IS_X:
938 RETURN_BOOL((ssb.sb.st_mode&xmask)!=0);
939 case FS_IS_FILE:
940 RETURN_BOOL(S_ISREG(ssb.sb.st_mode));
941 case FS_IS_DIR:
942 RETURN_BOOL(S_ISDIR(ssb.sb.st_mode));
943 case FS_IS_LINK:
944 RETURN_BOOL(S_ISLNK(ssb.sb.st_mode));
945 case FS_EXISTS:
946 RETURN_TRUE; /* the false case was done earlier */
947 case FS_LSTAT:
948 /* FALLTHROUGH */
949 case FS_STAT: {
950 char *stat_sb_names[] = {
951 "dev", "ino", "mode", "nlink", "uid", "gid", "rdev",
952 "size", "atime", "mtime", "ctime", "blksize", "blocks"
953 };
954 zval stat_dev, stat_ino, stat_mode, stat_nlink, stat_uid, stat_gid, stat_rdev,
955 stat_size, stat_atime, stat_mtime, stat_ctime, stat_blksize, stat_blocks;
956 zval *stat_sb_addresses[] = {
957 &stat_dev, &stat_ino, &stat_mode, &stat_nlink, &stat_uid, &stat_gid, &stat_rdev,
958 &stat_size, &stat_atime, &stat_mtime, &stat_ctime, &stat_blksize, &stat_blocks
959 };
960 size_t i, size_stat_sb = sizeof(stat_sb_addresses) / sizeof(*stat_sb_addresses);
961
962 array_init(return_value);
963
964 ZVAL_LONG(&stat_dev, stat_sb->st_dev);
965 ZVAL_LONG(&stat_ino, stat_sb->st_ino);
966 ZVAL_LONG(&stat_mode, stat_sb->st_mode);
967 ZVAL_LONG(&stat_nlink, stat_sb->st_nlink);
968 ZVAL_LONG(&stat_uid, stat_sb->st_uid);
969 ZVAL_LONG(&stat_gid, stat_sb->st_gid);
970 #ifdef HAVE_STRUCT_STAT_ST_RDEV
971 ZVAL_LONG(&stat_rdev, stat_sb->st_rdev);
972 #else
973 ZVAL_LONG(&stat_rdev, -1);
974 #endif
975 ZVAL_LONG(&stat_size, stat_sb->st_size);
976 ZVAL_LONG(&stat_atime, stat_sb->st_atime);
977 ZVAL_LONG(&stat_mtime, stat_sb->st_mtime);
978 ZVAL_LONG(&stat_ctime, stat_sb->st_ctime);
979 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
980 ZVAL_LONG(&stat_blksize, stat_sb->st_blksize);
981 #else
982 ZVAL_LONG(&stat_blksize,-1);
983 #endif
984 #ifdef HAVE_STRUCT_STAT_ST_BLOCKS
985 ZVAL_LONG(&stat_blocks, stat_sb->st_blocks);
986 #else
987 ZVAL_LONG(&stat_blocks,-1);
988 #endif
989 for (i = 0; i < size_stat_sb; i++) {
990 /* Store numeric indexes in proper order */
991 zend_hash_next_index_insert(Z_ARRVAL_P(return_value), stat_sb_addresses[i]);
992 }
993
994 for (i = 0; i < size_stat_sb; i++) {
995 /* Store string indexes referencing the same zval */
996 zend_hash_str_add_new(Z_ARRVAL_P(return_value), stat_sb_names[i], strlen(stat_sb_names[i]), stat_sb_addresses[i]);
997 }
998
999 return;
1000 }
1001 }
1002 php_error_docref(NULL, E_WARNING, "Didn't understand stat call");
1003 RETURN_FALSE;
1004 }
1005 /* }}} */
1006
1007 /* another quickie macro to make defining similar functions easier */
1008 /* {{{ FileFunction(name, funcnum) */
1009 #define FileFunction(name, funcnum) \
1010 ZEND_NAMED_FUNCTION(name) { \
1011 zend_string *filename; \
1012 \
1013 ZEND_PARSE_PARAMETERS_START(1, 1) \
1014 Z_PARAM_STR(filename) \
1015 ZEND_PARSE_PARAMETERS_END(); \
1016 \
1017 php_stat(filename, funcnum, return_value); \
1018 }
1019 /* }}} */
1020
1021 /* {{{ Get file permissions */
FileFunction(PHP_FN (fileperms),FS_PERMS)1022 FileFunction(PHP_FN(fileperms), FS_PERMS)
1023 /* }}} */
1024
1025 /* {{{ Get file inode */
1026 FileFunction(PHP_FN(fileinode), FS_INODE)
1027 /* }}} */
1028
1029 /* {{{ Get file size */
1030 FileFunction(PHP_FN(filesize), FS_SIZE)
1031 /* }}} */
1032
1033 /* {{{ Get file owner */
1034 FileFunction(PHP_FN(fileowner), FS_OWNER)
1035 /* }}} */
1036
1037 /* {{{ Get file group */
1038 FileFunction(PHP_FN(filegroup), FS_GROUP)
1039 /* }}} */
1040
1041 /* {{{ Get last access time of file */
1042 FileFunction(PHP_FN(fileatime), FS_ATIME)
1043 /* }}} */
1044
1045 /* {{{ Get last modification time of file */
1046 FileFunction(PHP_FN(filemtime), FS_MTIME)
1047 /* }}} */
1048
1049 /* {{{ Get inode modification time of file */
1050 FileFunction(PHP_FN(filectime), FS_CTIME)
1051 /* }}} */
1052
1053 /* {{{ Get file type */
1054 FileFunction(PHP_FN(filetype), FS_TYPE)
1055 /* }}} */
1056
1057 /* {{{ Returns true if file can be written */
1058 FileFunction(PHP_FN(is_writable), FS_IS_W)
1059 /* }}} */
1060
1061 /* {{{ Returns true if file can be read */
1062 FileFunction(PHP_FN(is_readable), FS_IS_R)
1063 /* }}} */
1064
1065 /* {{{ Returns true if file is executable */
1066 FileFunction(PHP_FN(is_executable), FS_IS_X)
1067 /* }}} */
1068
1069 /* {{{ Returns true if file is a regular file */
1070 FileFunction(PHP_FN(is_file), FS_IS_FILE)
1071 /* }}} */
1072
1073 /* {{{ Returns true if file is directory */
1074 FileFunction(PHP_FN(is_dir), FS_IS_DIR)
1075 /* }}} */
1076
1077 /* {{{ Returns true if file is symbolic link */
1078 FileFunction(PHP_FN(is_link), FS_IS_LINK)
1079 /* }}} */
1080
1081 /* {{{ Returns true if filename exists */
1082 FileFunction(PHP_FN(file_exists), FS_EXISTS)
1083 /* }}} */
1084
1085 /* {{{ Give information about a file or symbolic link */
1086 FileFunction(PHP_FN(lstat), FS_LSTAT)
1087 /* }}} */
1088
1089 /* {{{ Give information about a file */
1090 FileFunction(PHP_FN(stat), FS_STAT)
1091 /* }}} */
1092
1093 /* {{{ Get current size of realpath cache */
1094 PHP_FUNCTION(realpath_cache_size)
1095 {
1096 ZEND_PARSE_PARAMETERS_NONE();
1097
1098 RETURN_LONG(realpath_cache_size());
1099 }
1100
1101 /* {{{ Get current size of realpath cache */
PHP_FUNCTION(realpath_cache_get)1102 PHP_FUNCTION(realpath_cache_get)
1103 {
1104 realpath_cache_bucket **buckets = realpath_cache_get_buckets(), **end = buckets + realpath_cache_max_buckets();
1105
1106 ZEND_PARSE_PARAMETERS_NONE();
1107
1108 array_init(return_value);
1109 while(buckets < end) {
1110 realpath_cache_bucket *bucket = *buckets;
1111 while(bucket) {
1112 zval entry;
1113
1114 array_init(&entry);
1115
1116 /* bucket->key is unsigned long */
1117 if (ZEND_LONG_MAX >= bucket->key) {
1118 add_assoc_long_ex(&entry, "key", sizeof("key") - 1, bucket->key);
1119 } else {
1120 add_assoc_double_ex(&entry, "key", sizeof("key") - 1, (double)bucket->key);
1121 }
1122 add_assoc_bool_ex(&entry, "is_dir", sizeof("is_dir") - 1, bucket->is_dir);
1123 add_assoc_stringl_ex(&entry, "realpath", sizeof("realpath") - 1, bucket->realpath, bucket->realpath_len);
1124 add_assoc_long_ex(&entry, "expires", sizeof("expires") - 1, bucket->expires);
1125 #ifdef PHP_WIN32
1126 add_assoc_bool_ex(&entry, "is_rvalid", sizeof("is_rvalid") - 1, bucket->is_rvalid);
1127 add_assoc_bool_ex(&entry, "is_wvalid", sizeof("is_wvalid") - 1, bucket->is_wvalid);
1128 add_assoc_bool_ex(&entry, "is_readable", sizeof("is_readable") - 1, bucket->is_readable);
1129 add_assoc_bool_ex(&entry, "is_writable", sizeof("is_writable") - 1, bucket->is_writable);
1130 #endif
1131 zend_hash_str_update(Z_ARRVAL_P(return_value), bucket->path, bucket->path_len, &entry);
1132 bucket = bucket->next;
1133 }
1134 buckets++;
1135 }
1136 }
1137
