1 /*
2 +----------------------------------------------------------------------+
3 | phar:// stream wrapper support |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 2005-2018 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.php.net/license/3_01.txt. |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Authors: Gregory Beaver <cellog@php.net> |
16 | Marcus Boerger <helly@php.net> |
17 +----------------------------------------------------------------------+
18 */
19
20 #define PHAR_STREAM 1
21 #include "phar_internal.h"
22 #include "stream.h"
23 #include "dirstream.h"
24
25 php_stream_ops phar_ops = {
26 phar_stream_write, /* write */
27 phar_stream_read, /* read */
28 phar_stream_close, /* close */
29 phar_stream_flush, /* flush */
30 "phar stream",
31 phar_stream_seek, /* seek */
32 NULL, /* cast */
33 phar_stream_stat, /* stat */
34 NULL, /* set option */
35 };
36
37 php_stream_wrapper_ops phar_stream_wops = {
38 phar_wrapper_open_url,
39 NULL, /* phar_wrapper_close */
40 NULL, /* phar_wrapper_stat, */
41 phar_wrapper_stat, /* stat_url */
42 phar_wrapper_open_dir, /* opendir */
43 "phar",
44 phar_wrapper_unlink, /* unlink */
45 phar_wrapper_rename, /* rename */
46 phar_wrapper_mkdir, /* create directory */
47 phar_wrapper_rmdir, /* remove directory */
48 NULL
49 };
50
51 php_stream_wrapper php_stream_phar_wrapper = {
52 &phar_stream_wops,
53 NULL,
54 0 /* is_url */
55 };
56
57 /**
58 * Open a phar file for streams API
59 */
phar_parse_url(php_stream_wrapper * wrapper,const char * filename,const char * mode,int options)60 php_url* phar_parse_url(php_stream_wrapper *wrapper, const char *filename, const char *mode, int options) /* {{{ */
61 {
62 php_url *resource;
63 char *arch = NULL, *entry = NULL, *error;
64 int arch_len, entry_len;
65
66 if (strlen(filename) < 7 || strncasecmp(filename, "phar://", 7)) {
67 return NULL;
68 }
69 if (mode[0] == 'a') {
70 if (!(options & PHP_STREAM_URL_STAT_QUIET)) {
71 php_stream_wrapper_log_error(wrapper, options, "phar error: open mode append not supported");
72 }
73 return NULL;
74 }
75 if (phar_split_fname(filename, strlen(filename), &arch, &arch_len, &entry, &entry_len, 2, (mode[0] == 'w' ? 2 : 0)) == FAILURE) {
76 if (!(options & PHP_STREAM_URL_STAT_QUIET)) {
77 if (arch && !entry) {
78 php_stream_wrapper_log_error(wrapper, options, "phar error: no directory in \"%s\", must have at least phar://%s/ for root directory (always use full path to a new phar)", filename, arch);
79 arch = NULL;
80 } else {
81 php_stream_wrapper_log_error(wrapper, options, "phar error: invalid url or non-existent phar \"%s\"", filename);
82 }
83 }
84 return NULL;
85 }
86 resource = ecalloc(1, sizeof(php_url));
87 resource->scheme = estrndup("phar", 4);
88 resource->host = arch;
89
90 resource->path = entry;
91 #if MBO_0
92 if (resource) {
93 fprintf(stderr, "Alias: %s\n", alias);
94 fprintf(stderr, "Scheme: %s\n", resource->scheme);
95 /* fprintf(stderr, "User: %s\n", resource->user);*/
96 /* fprintf(stderr, "Pass: %s\n", resource->pass ? "***" : NULL);*/
97 fprintf(stderr, "Host: %s\n", resource->host);
98 /* fprintf(stderr, "Port: %d\n", resource->port);*/
99 fprintf(stderr, "Path: %s\n", resource->path);
100 /* fprintf(stderr, "Query: %s\n", resource->query);*/
101 /* fprintf(stderr, "Fragment: %s\n", resource->fragment);*/
102 }
103 #endif
104 if (mode[0] == 'w' || (mode[0] == 'r' && mode[1] == '+')) {
105 phar_archive_data *pphar = NULL, *phar;
106
107 if (PHAR_G(request_init) && PHAR_G(phar_fname_map.u.flags) && NULL == (pphar = zend_hash_str_find_ptr(&(PHAR_G(phar_fname_map)), arch, arch_len))) {
108 pphar = NULL;
109 }
110 if (PHAR_G(readonly) && (!pphar || !pphar->is_data)) {
111 if (!(options & PHP_STREAM_URL_STAT_QUIET)) {
112 php_stream_wrapper_log_error(wrapper, options, "phar error: write operations disabled by the php.ini setting phar.readonly");
113 }
114 php_url_free(resource);
115 return NULL;
116 }
117 if (phar_open_or_create_filename(resource->host, arch_len, NULL, 0, 0, options, &phar, &error) == FAILURE)
118 {
119 if (error) {
120 if (!(options & PHP_STREAM_URL_STAT_QUIET)) {
121 php_stream_wrapper_log_error(wrapper, options, "%s", error);
122 }
123 efree(error);
124 }
125 php_url_free(resource);
126 return NULL;
127 }
128 if (phar->is_persistent && FAILURE == phar_copy_on_write(&phar)) {
129 if (error) {
130 spprintf(&error, 0, "Cannot open cached phar '%s' as writeable, copy on write failed", resource->host);
131 if (!(options & PHP_STREAM_URL_STAT_QUIET)) {
132 php_stream_wrapper_log_error(wrapper, options, "%s", error);
133 }
134 efree(error);
135 }
136 php_url_free(resource);
137 return NULL;
138 }
139 } else {
140 if (phar_open_from_filename(resource->host, arch_len, NULL, 0, options, NULL, &error) == FAILURE)
141 {
142 if (error) {
143 if (!(options & PHP_STREAM_URL_STAT_QUIET)) {
144 php_stream_wrapper_log_error(wrapper, options, "%s", error);
145 }
146 efree(error);
147 }
148 php_url_free(resource);
149 return NULL;
150 }
151 }
152 return resource;
153 }
154 /* }}} */
155
156 /**
157 * used for fopen('phar://...') and company
158 */
phar_wrapper_open_url(php_stream_wrapper * wrapper,const char * path,const char * mode,int options,zend_string ** opened_path,php_stream_context * context STREAMS_DC)159 static php_stream * phar_wrapper_open_url(php_stream_wrapper *wrapper, const char *path, const char *mode, int options, zend_string **opened_path, php_stream_context *context STREAMS_DC) /* {{{ */
160 {
161 phar_archive_data *phar;
162 phar_entry_data *idata;
163 char *internal_file;
164 char *error;
165 HashTable *pharcontext;
166 php_url *resource = NULL;
167 php_stream *fpf;
168 zval *pzoption, *metadata;
169 uint32_t host_len;
170
171 if ((resource = phar_parse_url(wrapper, path, mode, options)) == NULL) {
172 return NULL;
173 }
174
175 /* we must have at the very least phar://alias.phar/internalfile.php */
176 if (!resource->scheme || !resource->host || !resource->path) {
177 php_url_free(resource);
178 php_stream_wrapper_log_error(wrapper, options, "phar error: invalid url \"%s\"", path);
179 return NULL;
180 }
181
182 if (strcasecmp("phar", resource->scheme)) {
183 php_url_free(resource);
184 php_stream_wrapper_log_error(wrapper, options, "phar error: not a phar stream url \"%s\"", path);
185 return NULL;
186 }
187
188 host_len = strlen(resource->host);
189 phar_request_initialize();
190
191 /* strip leading "/" */
192 internal_file = estrdup(resource->path + 1);
193 if (mode[0] == 'w' || (mode[0] == 'r' && mode[1] == '+')) {
194 if (NULL == (idata = phar_get_or_create_entry_data(resource->host, host_len, internal_file, strlen(internal_file), mode, 0, &error, 1))) {
195 if (error) {
196 php_stream_wrapper_log_error(wrapper, options, "%s", error);
197 efree(error);
198 } else {
199 php_stream_wrapper_log_error(wrapper, options, "phar error: file \"%s\" could not be created in phar \"%s\"", internal_file, resource->host);
200 }
201 efree(internal_file);
202 php_url_free(resource);
203 return NULL;
204 }
205 if (error) {
206 efree(error);
207 }
208 fpf = php_stream_alloc(&phar_ops, idata, NULL, mode);
209 php_url_free(resource);
210 efree(internal_file);
211
212 if (context && Z_TYPE(context->options) != IS_UNDEF && (pzoption = zend_hash_str_find(HASH_OF(&context->options), "phar", sizeof("phar")-1)) != NULL) {
213 pharcontext = HASH_OF(pzoption);
214 if (idata->internal_file->uncompressed_filesize == 0
215 && idata->internal_file->compressed_filesize == 0
216 && (pzoption = zend_hash_str_find(pharcontext, "compress", sizeof("compress")-1)) != NULL
217 && Z_TYPE_P(pzoption) == IS_LONG
218 && (Z_LVAL_P(pzoption) & ~PHAR_ENT_COMPRESSION_MASK) == 0
219 ) {
220 idata->internal_file->flags &= ~PHAR_ENT_COMPRESSION_MASK;
221 idata->internal_file->flags |= Z_LVAL_P(pzoption);
222 }
223 if ((pzoption = zend_hash_str_find(pharcontext, "metadata", sizeof("metadata")-1)) != NULL) {
224 if (Z_TYPE(idata->internal_file->metadata) != IS_UNDEF) {
225 zval_ptr_dtor(&idata->internal_file->metadata);
226 ZVAL_UNDEF(&idata->internal_file->metadata);
227 }
228
229 metadata = pzoption;
230 ZVAL_DEREF(metadata);
231 ZVAL_COPY(&idata->internal_file->metadata, metadata);
232 idata->phar->is_modified = 1;
233 }
234 }
235 if (opened_path) {
236 *opened_path = strpprintf(MAXPATHLEN, "phar://%s/%s", idata->phar->fname, idata->internal_file->filename);
237 }
238 return fpf;
239 } else {
240 if (!*internal_file && (options & STREAM_OPEN_FOR_INCLUDE)) {
241 /* retrieve the stub */
242 if (FAILURE == phar_get_archive(&phar, resource->host, host_len, NULL, 0, NULL)) {
243 php_stream_wrapper_log_error(wrapper, options, "file %s is not a valid phar archive", resource->host);
244 efree(internal_file);
245 php_url_free(resource);
246 return NULL;
247 }
248 if (phar->is_tar || phar->is_zip) {
249 if ((FAILURE == phar_get_entry_data(&idata, resource->host, host_len, ".phar/stub.php", sizeof(".phar/stub.php")-1, "r", 0, &error, 0)) || !idata) {
250 goto idata_error;
251 }
252 efree(internal_file);
253 if (opened_path) {
254 *opened_path = strpprintf(MAXPATHLEN, "%s", phar->fname);
255 }
256 php_url_free(resource);
257 goto phar_stub;
258 } else {
259 phar_entry_info *entry;
260
261 entry = (phar_entry_info *) ecalloc(1, sizeof(phar_entry_info));
262 entry->is_temp_dir = 1;
263 entry->filename = estrndup("", 0);
264 entry->filename_len = 0;
265 entry->phar = phar;
266 entry->offset = entry->offset_abs = 0;
267 entry->compressed_filesize = entry->uncompressed_filesize = phar->halt_offset;
268 entry->is_crc_checked = 1;
269
270 idata = (phar_entry_data *) ecalloc(1, sizeof(phar_entry_data));
271 idata->fp = phar_get_pharfp(phar);
272 idata->phar = phar;
273 idata->internal_file = entry;
274 if (!phar->is_persistent) {
275 ++(entry->phar->refcount);
276 }
277 ++(entry->fp_refcount);
278 php_url_free(resource);
279 if (opened_path) {
280 *opened_path = strpprintf(MAXPATHLEN, "%s", phar->fname);
281 }
282 efree(internal_file);
283 goto phar_stub;
284 }
285 }
286 /* read-only access is allowed to magic files in .phar directory */
287 if ((FAILURE == phar_get_entry_data(&idata, resource->host, host_len, internal_file, strlen(internal_file), "r", 0, &error, 0)) || !idata) {
288 idata_error:
289 if (error) {
290 php_stream_wrapper_log_error(wrapper, options, "%s", error);
291 efree(error);
292 } else {
293 php_stream_wrapper_log_error(wrapper, options, "phar error: \"%s\" is not a file in phar \"%s\"", internal_file, resource->host);
294 }
295 efree(internal_file);
296 php_url_free(resource);
297 return NULL;
298 }
299 }
300 php_url_free(resource);
301 #if MBO_0
302 fprintf(stderr, "Pharname: %s\n", idata->phar->filename);
303 fprintf(stderr, "Filename: %s\n", internal_file);
304 fprintf(stderr, "Entry: %s\n", idata->internal_file->filename);
305 fprintf(stderr, "Size: %u\n", idata->internal_file->uncompressed_filesize);
306 fprintf(stderr, "Compressed: %u\n", idata->internal_file->flags);
307 fprintf(stderr, "Offset: %u\n", idata->internal_file->offset_within_phar);
308 fprintf(stderr, "Cached: %s\n", idata->internal_file->filedata ? "yes" : "no");
309 #endif
310
311 /* check length, crc32 */
312 if (!idata->internal_file->is_crc_checked && phar_postprocess_file(idata, idata->internal_file->crc32, &error, 2) != SUCCESS) {
313 php_stream_wrapper_log_error(wrapper, options, "%s", error);
314 efree(error);
315 phar_entry_delref(idata);
316 efree(internal_file);
317 return NULL;
318 }
319
320 if (!PHAR_G(cwd_init) && options & STREAM_OPEN_FOR_INCLUDE) {
321 char *entry = idata->internal_file->filename, *cwd;
322
323 PHAR_G(cwd_init) = 1;
324 if ((idata->phar->is_tar || idata->phar->is_zip) && idata->internal_file->filename_len == sizeof(".phar/stub.php")-1 && !strncmp(idata->internal_file->filename, ".phar/stub.php", sizeof(".phar/stub.php")-1)) {
325 /* we're executing the stub, which doesn't count as a file */
326 PHAR_G(cwd_init) = 0;
327 } else if ((cwd = strrchr(entry, '/'))) {
328 PHAR_G(cwd_len) = cwd - entry;
329 PHAR_G(cwd) = estrndup(entry, PHAR_G(cwd_len));
330 } else {
331 /* root directory */
332 PHAR_G(cwd_len) = 0;
333 PHAR_G(cwd) = NULL;
334 }
335 }
336 if (opened_path) {
337 *opened_path = strpprintf(MAXPATHLEN, "phar://%s/%s", idata->phar->fname, idata->internal_file->filename);
338 }
339 efree(internal_file);
340 phar_stub:
341 fpf = php_stream_alloc(&phar_ops, idata, NULL, mode);
342 return fpf;
343 }
344 /* }}} */
345
346 /**
347 * Used for fclose($fp) where $fp is a phar archive
348 */
phar_stream_close(php_stream * stream,int close_handle)349 static int phar_stream_close(php_stream *stream, int close_handle) /* {{{ */
350 {
351 /* for some reasons phar needs to be flushed even if there is no write going on */
352 phar_stream_flush(stream);
353
354 phar_entry_delref((phar_entry_data *)stream->abstract);
355
356 return 0;
357 }
358 /* }}} */
359
360 /**
361 * used for fread($fp) and company on a fopen()ed phar file handle
362 */
phar_stream_read(php_stream * stream,char * buf,size_t count)363 static size_t phar_stream_read(php_stream *stream, char *buf, size_t count) /* {{{ */
364 {
365 phar_entry_data *data = (phar_entry_data *)stream->abstract;
366 size_t got;
367 phar_entry_info *entry;
368
369 if (data->internal_file->link) {
370 entry = phar_get_link_source(data->internal_file);
371 } else {
372 entry = data->internal_file;
373 }
374
375 if (entry->is_deleted) {
376 stream->eof = 1;
377 return 0;
378 }
379
380 /* use our proxy position */
381 php_stream_seek(data->fp, data->position + data->zero, SEEK_SET);
382
383 got = php_stream_read(data->fp, buf, MIN(count, entry->uncompressed_filesize - data->position));
384 data->position = php_stream_tell(data->fp) - data->zero;
385 stream->eof = (data->position == (zend_off_t) entry->uncompressed_filesize);
386
387 return got;
388 }
389 /* }}} */
390
391 /**
392 * Used for fseek($fp) on a phar file handle
393 */
phar_stream_seek(php_stream * stream,zend_off_t offset,int whence,zend_off_t * newoffset)394 static int phar_stream_seek(php_stream *stream, zend_off_t offset, int whence, zend_off_t *newoffset) /* {{{ */
395 {
396 phar_entry_data *data = (phar_entry_data *)stream->abstract;
397 phar_entry_info *entry;
398 int res;
399 zend_off_t temp;
400
401 if (data->internal_file->link) {
402 entry = phar_get_link_source(data->internal_file);
403 } else {
404 entry = data->internal_file;
405 }
406
407 switch (whence) {
408 case SEEK_END :
409 temp = data->zero + entry->uncompressed_filesize + offset;
410 break;
411 case SEEK_CUR :
412 temp = data->zero + data->position + offset;
413 break;
414 case SEEK_SET :
415 temp = data->zero + offset;
416 break;
417 default:
418 temp = 0;
419 }
420 if (temp > data->zero + (zend_off_t) entry->uncompressed_filesize) {
421 *newoffset = -1;
422 return -1;
423 }
424 if (temp < data->zero) {
425 *newoffset = -1;
426 return -1;
427 }
428 res = php_stream_seek(data->fp, temp, SEEK_SET);
429 *newoffset = php_stream_tell(data->fp) - data->zero;
430 data->position = *newoffset;
431 return res;
432 }
433 /* }}} */
434
435 /**
436 * Used for writing to a phar file
437 */
phar_stream_write(php_stream * stream,const char * buf,size_t count)438 static size_t phar_stream_write(php_stream *stream, const char *buf, size_t count) /* {{{ */
439 {
440 phar_entry_data *data = (phar_entry_data *) stream->abstract;
441
442 php_stream_seek(data->fp, data->position, SEEK_SET);
443 if (count != php_stream_write(data->fp, buf, count)) {
444 php_stream_wrapper_log_error(stream->wrapper, stream->flags, "phar error: Could not write %d characters to \"%s\" in phar \"%s\"", (int) count, data->internal_file->filename, data->phar->fname);
445 return 0;
446 }
447 data->position = php_stream_tell(data->fp);
448 if (data->position > (zend_off_t)data->internal_file->uncompressed_filesize) {
449 data->internal_file->uncompressed_filesize = data->position;
450 }
451 data->internal_file->compressed_filesize = data->internal_file->uncompressed_filesize;
452 data->internal_file->old_flags = data->internal_file->flags;
453 data->internal_file->is_modified = 1;
454 return count;
455 }
456 /* }}} */
457
458 /**
459 * Used to save work done on a writeable phar
460 */
phar_stream_flush(php_stream * stream)461 static int phar_stream_flush(php_stream *stream) /* {{{ */
462 {
463 char *error;
464 int ret;
465 phar_entry_data *data = (phar_entry_data *) stream->abstract;
466
467 if (data->internal_file->is_modified) {
468 data->internal_file->timestamp = time(0);
469 ret = phar_flush(data->phar, 0, 0, 0, &error);
470 if (error) {
471 php_stream_wrapper_log_error(stream->wrapper, REPORT_ERRORS, "%s", error);
472 efree(error);
473 }
474 return ret;
475 } else {
476 return EOF;
477 }
478 }
479 /* }}} */
480
481 /* {{{ phar_dostat */
482 /**
483 * stat an opened phar file handle stream, used by phar_stat()
484 */
phar_dostat(phar_archive_data * phar,phar_entry_info * data,php_stream_statbuf * ssb,zend_bool is_temp_dir)485 void phar_dostat(phar_archive_data *phar, phar_entry_info *data, php_stream_statbuf *ssb, zend_bool is_temp_dir)
486 {
487 memset(ssb, 0, sizeof(php_stream_statbuf));
488
489 if (!is_temp_dir && !data->is_dir) {
490 ssb->sb.st_size = data->uncompressed_filesize;
491 ssb->sb.st_mode = data->flags & PHAR_ENT_PERM_MASK;
492 ssb->sb.st_mode |= S_IFREG; /* regular file */
493 /* timestamp is just the timestamp when this was added to the phar */
494 ssb->sb.st_mtime = data->timestamp;
495 ssb->sb.st_atime = data->timestamp;
496 ssb->sb.st_ctime = data->timestamp;
497 } else if (!is_temp_dir && data->is_dir) {
498 ssb->sb.st_size = 0;
499 ssb->sb.st_mode = data->flags & PHAR_ENT_PERM_MASK;
500 ssb->sb.st_mode |= S_IFDIR; /* regular directory */
501 /* timestamp is just the timestamp when this was added to the phar */
502 ssb->sb.st_mtime = data->timestamp;
503 ssb->sb.st_atime = data->timestamp;
504 ssb->sb.st_ctime = data->timestamp;
505 } else {
506 ssb->sb.st_size = 0;
507 ssb->sb.st_mode = 0777;
508 ssb->sb.st_mode |= S_IFDIR; /* regular directory */
509 ssb->sb.st_mtime = phar->max_timestamp;
510 ssb->sb.st_atime = phar->max_timestamp;
511 ssb->sb.st_ctime = phar->max_timestamp;
512 }
513 if (!phar->is_writeable) {
514 ssb->sb.st_mode = (ssb->sb.st_mode & 0555) | (ssb->sb.st_mode & ~0777);
515 }
516
517 ssb->sb.st_nlink = 1;
518 ssb->sb.st_rdev = -1;
519 /* this is only for APC, so use /dev/null device - no chance of conflict there! */
520 ssb->sb.st_dev = 0xc;
521 /* generate unique inode number for alias/filename, so no phars will conflict */
522 if (!is_temp_dir) {
523 ssb->sb.st_ino = data->inode;
524 }
525 #ifndef PHP_WIN32
526 ssb->sb.st_blksize = -1;
527 ssb->sb.st_blocks = -1;
528 #endif
529 }
530 /* }}}*/
531
532 /**
533 * Stat an opened phar file handle
534 */
phar_stream_stat(php_stream * stream,php_stream_statbuf * ssb)535 static int phar_stream_stat(php_stream *stream, php_stream_statbuf *ssb) /* {{{ */
536 {
537 phar_entry_data *data = (phar_entry_data *)stream->abstract;
538
539 /* If ssb is NULL then someone is misbehaving */
540 if (!ssb) {
541 return -1;
542 }
543
544 phar_dostat(data->phar, data->internal_file, ssb, 0);
545 return 0;
546 }
547 /* }}} */
548
549 /**
550 * Stream wrapper stat implementation of stat()
551 */
phar_wrapper_stat(php_stream_wrapper * wrapper,const char * url,int flags,php_stream_statbuf * ssb,php_stream_context * context)552 static int phar_wrapper_stat(php_stream_wrapper *wrapper, const char *url, int flags,
553 php_stream_statbuf *ssb, php_stream_context *context) /* {{{ */
554 {
555 php_url *resource = NULL;
556 char *internal_file, *error;
557 phar_archive_data *phar;
558 phar_entry_info *entry;
559 uint32_t host_len;
560 int internal_file_len;
561
562 if ((resource = phar_parse_url(wrapper, url, "r", flags|PHP_STREAM_URL_STAT_QUIET)) == NULL) {
563 return FAILURE;
564 }
565
566 /* we must have at the very least phar://alias.phar/internalfile.php */
567 if (!resource->scheme || !resource->host || !resource->path) {
568 php_url_free(resource);
569 return FAILURE;
570 }
571
572 if (strcasecmp("phar", resource->scheme)) {
573 php_url_free(resource);
574 return FAILURE;
575 }
576
577 host_len = strlen(resource->host);
578 phar_request_initialize();
579
580 internal_file = resource->path + 1; /* strip leading "/" */
581 /* find the phar in our trusty global hash indexed by alias (host of phar://blah.phar/file.whatever) */
582 if (FAILURE == phar_get_archive(&phar, resource->host, host_len, NULL, 0, &error)) {
583 php_url_free(resource);
584 if (error) {
585 efree(error);
586 }
587 return FAILURE;
588 }
589 if (error) {
590 efree(error);
591 }
592 if (*internal_file == '\0') {
593 /* root directory requested */
594 phar_dostat(phar, NULL, ssb, 1);
595 php_url_free(resource);
596 return SUCCESS;
597 }
598 if (!phar->manifest.u.flags) {
599 php_url_free(resource);
600 return FAILURE;
601 }
602 internal_file_len = strlen(internal_file);
603 /* search through the manifest of files, and if we have an exact match, it's a file */
604 if (NULL != (entry = zend_hash_str_find_ptr(&phar->manifest, internal_file, internal_file_len))) {
605 phar_dostat(phar, entry, ssb, 0);
606 php_url_free(resource);
607 return SUCCESS;
608 }
609 if (zend_hash_str_exists(&(phar->virtual_dirs), internal_file, internal_file_len)) {
610 phar_dostat(phar, NULL, ssb, 1);
611 php_url_free(resource);
612 return SUCCESS;
613 }
614 /* check for mounted directories */
615 if (phar->mounted_dirs.u.flags && zend_hash_num_elements(&phar->mounted_dirs)) {
616 zend_string *str_key;
617
618 ZEND_HASH_FOREACH_STR_KEY(&phar->mounted_dirs, str_key) {
619 if ((int)ZSTR_LEN(str_key) >= internal_file_len || strncmp(ZSTR_VAL(str_key), internal_file, ZSTR_LEN(str_key))) {
620 continue;
621 } else {
622 char *test;
623 int test_len;
624 php_stream_statbuf ssbi;
625
626 if (NULL == (entry = zend_hash_find_ptr(&phar->manifest, str_key))) {
627 goto free_resource;
628 }
629 if (!entry->tmp || !entry->is_mounted) {
630 goto free_resource;
631 }
632 test_len = spprintf(&test, MAXPATHLEN, "%s%s", entry->tmp, internal_file + ZSTR_LEN(str_key));
633 if (SUCCESS != php_stream_stat_path(test, &ssbi)) {
634 efree(test);
635 continue;
636 }
637 /* mount the file/directory just in time */
638 if (SUCCESS != phar_mount_entry(phar, test, test_len, internal_file, internal_file_len)) {
639 efree(test);
640 goto free_resource;
641 }
642 efree(test);
643 if (NULL == (entry = zend_hash_str_find_ptr(&phar->manifest, internal_file, internal_file_len))) {
644 goto free_resource;
645 }
646 phar_dostat(phar, entry, ssb, 0);
647 php_url_free(resource);
648 return SUCCESS;
649 }
650 } ZEND_HASH_FOREACH_END();
651 }
652 free_resource:
653 php_url_free(resource);
654 return FAILURE;
655 }
656 /* }}} */
657
658 /**
659 * Unlink a file within a phar archive
660 */
phar_wrapper_unlink(php_stream_wrapper * wrapper,const char * url,int options,php_stream_context * context)661 static int phar_wrapper_unlink(php_stream_wrapper *wrapper, const char *url, int options, php_stream_context *context) /* {{{ */
662 {
663 php_url *resource;
664 char *internal_file, *error;
665 int internal_file_len;
666 phar_entry_data *idata;
667 phar_archive_data *pphar;
668 uint32_t host_len;
669
670 if ((resource = phar_parse_url(wrapper, url, "rb", options)) == NULL) {
671 php_stream_wrapper_log_error(wrapper, options, "phar error: unlink failed");
672 return 0;
673 }
674
675 /* we must have at the very least phar://alias.phar/internalfile.php */
676 if (!resource->scheme || !resource->host || !resource->path) {
677 php_url_free(resource);
678 php_stream_wrapper_log_error(wrapper, options, "phar error: invalid url \"%s\"", url);
679 return 0;
680 }
681
682 if (strcasecmp("phar", resource->scheme)) {
683 php_url_free(resource);
684 php_stream_wrapper_log_error(wrapper, options, "phar error: not a phar stream url \"%s\"", url);
685 return 0;
686 }
687
688 host_len = strlen(resource->host);
689 phar_request_initialize();
690
691 pphar = zend_hash_str_find_ptr(&(PHAR_G(phar_fname_map)), resource->host, host_len);
692 if (PHAR_G(readonly) && (!pphar || !pphar->is_data)) {
693 php_url_free(resource);
694 php_stream_wrapper_log_error(wrapper, options, "phar error: write operations disabled by the php.ini setting phar.readonly");
695 return 0;
696 }
697
698 /* need to copy to strip leading "/", will get touched again */
699 internal_file = estrdup(resource->path + 1);
700 internal_file_len = strlen(internal_file);
701 if (FAILURE == phar_get_entry_data(&idata, resource->host, host_len, internal_file, internal_file_len, "r", 0, &error, 1)) {
702 /* constraints of fp refcount were not met */
703 if (error) {
704 php_stream_wrapper_log_error(wrapper, options, "unlink of \"%s\" failed: %s", url, error);
705 efree(error);
706 } else {
707 php_stream_wrapper_log_error(wrapper, options, "unlink of \"%s\" failed, file does not exist", url);
708 }
709 efree(internal_file);
710 php_url_free(resource);
711 return 0;
712 }
713 if (error) {
714 efree(error);
715 }
716 if (idata->internal_file->fp_refcount > 1) {
717 /* more than just our fp resource is open for this file */
718 php_stream_wrapper_log_error(wrapper, options, "phar error: \"%s\" in phar \"%s\", has open file pointers, cannot unlink", internal_file, resource->host);
719 efree(internal_file);
720 php_url_free(resource);
721 phar_entry_delref(idata);
722 return 0;
723 }
724 php_url_free(resource);
725 efree(internal_file);
726 phar_entry_remove(idata, &error);
727 if (error) {
728 php_stream_wrapper_log_error(wrapper, options, "%s", error);
729 efree(error);
730 }
731 return 1;
732 }
733 /* }}} */
734
phar_wrapper_rename(php_stream_wrapper * wrapper,const char * url_from,const char * url_to,int options,php_stream_context * context)735 static int phar_wrapper_rename(php_stream_wrapper *wrapper, const char *url_from, const char *url_to, int options, php_stream_context *context) /* {{{ */
736 {
737 php_url *resource_from, *resource_to;
738 char *error;
739 phar_archive_data *phar, *pfrom, *pto;
740 phar_entry_info *entry;
741 uint32_t host_len;
742 int is_dir = 0;
743 int is_modified = 0;
744
745 error = NULL;
746
747 if ((resource_from = phar_parse_url(wrapper, url_from, "wb", options|PHP_STREAM_URL_STAT_QUIET)) == NULL) {
748 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\": invalid or non-writable url \"%s\"", url_from, url_to, url_from);
749 return 0;
750 }
751 if (SUCCESS != phar_get_archive(&pfrom, resource_from->host, strlen(resource_from->host), NULL, 0, &error)) {
752 pfrom = NULL;
753 if (error) {
754 efree(error);
755 }
756 }
757 if (PHAR_G(readonly) && (!pfrom || !pfrom->is_data)) {
758 php_url_free(resource_from);
759 php_error_docref(NULL, E_WARNING, "phar error: Write operations disabled by the php.ini setting phar.readonly");
760 return 0;
761 }
762
763 if ((resource_to = phar_parse_url(wrapper, url_to, "wb", options|PHP_STREAM_URL_STAT_QUIET)) == NULL) {
764 php_url_free(resource_from);
765 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\": invalid or non-writable url \"%s\"", url_from, url_to, url_to);
766 return 0;
767 }
768 if (SUCCESS != phar_get_archive(&pto, resource_to->host, strlen(resource_to->host), NULL, 0, &error)) {
769 if (error) {
770 efree(error);
771 }
772 pto = NULL;
773 }
774 if (PHAR_G(readonly) && (!pto || !pto->is_data)) {
775 php_url_free(resource_from);
776 php_error_docref(NULL, E_WARNING, "phar error: Write operations disabled by the php.ini setting phar.readonly");
777 return 0;
778 }
779
780 if (strcmp(resource_from->host, resource_to->host)) {
781 php_url_free(resource_from);
782 php_url_free(resource_to);
783 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\", not within the same phar archive", url_from, url_to);
784 return 0;
785 }
786
787 /* we must have at the very least phar://alias.phar/internalfile.php */
788 if (!resource_from->scheme || !resource_from->host || !resource_from->path) {
789 php_url_free(resource_from);
790 php_url_free(resource_to);
791 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\": invalid url \"%s\"", url_from, url_to, url_from);
792 return 0;
793 }
794
795 if (!resource_to->scheme || !resource_to->host || !resource_to->path) {
796 php_url_free(resource_from);
797 php_url_free(resource_to);
798 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\": invalid url \"%s\"", url_from, url_to, url_to);
799 return 0;
800 }
801
802 if (strcasecmp("phar", resource_from->scheme)) {
803 php_url_free(resource_from);
804 php_url_free(resource_to);
805 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\": not a phar stream url \"%s\"", url_from, url_to, url_from);
806 return 0;
807 }
808
809 if (strcasecmp("phar", resource_to->scheme)) {
810 php_url_free(resource_from);
811 php_url_free(resource_to);
812 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\": not a phar stream url \"%s\"", url_from, url_to, url_to);
813 return 0;
814 }
815
816 host_len = strlen(resource_from->host);
817
818 if (SUCCESS != phar_get_archive(&phar, resource_from->host, host_len, NULL, 0, &error)) {
819 php_url_free(resource_from);
820 php_url_free(resource_to);
821 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\": %s", url_from, url_to, error);
822 efree(error);
823 return 0;
824 }
825
826 if (phar->is_persistent && FAILURE == phar_copy_on_write(&phar)) {
827 php_url_free(resource_from);
828 php_url_free(resource_to);
829 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\": could not make cached phar writeable", url_from, url_to);
830 return 0;
831 }
832
833 if (NULL != (entry = zend_hash_str_find_ptr(&(phar->manifest), resource_from->path+1, strlen(resource_from->path)-1))) {
834 phar_entry_info new, *source;
835
836 /* perform rename magic */
837 if (entry->is_deleted) {
838 php_url_free(resource_from);
839 php_url_free(resource_to);
840 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\" from extracted phar archive, source has been deleted", url_from, url_to);
841 return 0;
842 }
843 /* transfer all data over to the new entry */
844 memcpy((void *) &new, (void *) entry, sizeof(phar_entry_info));
845 /* mark the old one for deletion */
846 entry->is_deleted = 1;
847 entry->fp = NULL;
848 ZVAL_UNDEF(&entry->metadata);
849 entry->link = entry->tmp = NULL;
850 source = entry;
851
852 /* add to the manifest, and then store the pointer to the new guy in entry */
853 entry = zend_hash_str_add_mem(&(phar->manifest), resource_to->path+1, strlen(resource_to->path)-1, (void **)&new, sizeof(phar_entry_info));
854
855 entry->filename = estrdup(resource_to->path+1);
856 if (FAILURE == phar_copy_entry_fp(source, entry, &error)) {
857 php_url_free(resource_from);
858 php_url_free(resource_to);
859 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\": %s", url_from, url_to, error);
860 efree(error);
861 zend_hash_str_del(&(phar->manifest), entry->filename, strlen(entry->filename));
862 return 0;
863 }
864 is_modified = 1;
865 entry->is_modified = 1;
866 entry->filename_len = strlen(entry->filename);
867 is_dir = entry->is_dir;
868 } else {
869 is_dir = zend_hash_str_exists(&(phar->virtual_dirs), resource_from->path+1, strlen(resource_from->path)-1);
870 if (!is_dir) {
871 /* file does not exist */
872 php_url_free(resource_from);
873 php_url_free(resource_to);
874 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\" from extracted phar archive, source does not exist", url_from, url_to);
875 return 0;
876
877 }
878 }
879
880 /* Rename directory. Update all nested paths */
881 if (is_dir) {
882 Bucket *b;
883 zend_string *str_key;
884 zend_string *new_str_key;
885 uint32_t from_len = strlen(resource_from->path+1);
886 uint32_t to_len = strlen(resource_to->path+1);
887
888 ZEND_HASH_FOREACH_BUCKET(&phar->manifest, b) {
889 str_key = b->key;
890 entry = Z_PTR(b->val);
891 if (!entry->is_deleted &&
892 ZSTR_LEN(str_key) > from_len &&
893 memcmp(ZSTR_VAL(str_key), resource_from->path+1, from_len) == 0 &&
894 IS_SLASH(ZSTR_VAL(str_key)[from_len])) {
895
896 new_str_key = zend_string_alloc(ZSTR_LEN(str_key) + to_len - from_len, 0);
897 memcpy(ZSTR_VAL(new_str_key), resource_to->path + 1, to_len);
898 memcpy(ZSTR_VAL(new_str_key) + to_len, ZSTR_VAL(str_key) + from_len, ZSTR_LEN(str_key) - from_len);
899 ZSTR_VAL(new_str_key)[ZSTR_LEN(new_str_key)] = 0;
900
901 is_modified = 1;
902 entry->is_modified = 1;
903 efree(entry->filename);
904 // TODO: avoid reallocation (make entry->filename zend_string*)
905 entry->filename = estrndup(ZSTR_VAL(new_str_key), ZSTR_LEN(new_str_key));
906 entry->filename_len = ZSTR_LEN(new_str_key);
907
908 zend_string_release(str_key);
909 b->h = zend_string_hash_val(new_str_key);
910 b->key = new_str_key;
911 }
912 } ZEND_HASH_FOREACH_END();
913 zend_hash_rehash(&phar->manifest);
914
915 ZEND_HASH_FOREACH_BUCKET(&phar->virtual_dirs, b) {
916 str_key = b->key;
917 if (ZSTR_LEN(str_key) >= from_len &&
918 memcmp(ZSTR_VAL(str_key), resource_from->path+1, from_len) == 0 &&
919 (ZSTR_LEN(str_key) == from_len || IS_SLASH(ZSTR_VAL(str_key)[from_len]))) {
920
921 new_str_key = zend_string_alloc(ZSTR_LEN(str_key) + to_len - from_len, 0);
922 memcpy(ZSTR_VAL(new_str_key), resource_to->path + 1, to_len);
923 memcpy(ZSTR_VAL(new_str_key) + to_len, ZSTR_VAL(str_key) + from_len, ZSTR_LEN(str_key) - from_len);
924 ZSTR_VAL(new_str_key)[ZSTR_LEN(new_str_key)] = 0;
925
926 zend_string_release(str_key);
927 b->h = zend_string_hash_val(new_str_key);
928 b->key = new_str_key;
929 }
930 } ZEND_HASH_FOREACH_END();
931 zend_hash_rehash(&phar->virtual_dirs);
932
933 ZEND_HASH_FOREACH_BUCKET(&phar->mounted_dirs, b) {
934 str_key = b->key;
935 if (ZSTR_LEN(str_key) >= from_len &&
936 memcmp(ZSTR_VAL(str_key), resource_from->path+1, from_len) == 0 &&
937 (ZSTR_LEN(str_key) == from_len || IS_SLASH(ZSTR_VAL(str_key)[from_len]))) {
938
939 new_str_key = zend_string_alloc(ZSTR_LEN(str_key) + to_len - from_len, 0);
940 memcpy(ZSTR_VAL(new_str_key), resource_to->path + 1, to_len);
941 memcpy(ZSTR_VAL(new_str_key) + to_len, ZSTR_VAL(str_key) + from_len, ZSTR_LEN(str_key) - from_len);
942 ZSTR_VAL(new_str_key)[ZSTR_LEN(new_str_key)] = 0;
943
944 zend_string_release(str_key);
945 b->h = zend_string_hash_val(new_str_key);
946 b->key = new_str_key;
947 }
948 } ZEND_HASH_FOREACH_END();
949 zend_hash_rehash(&phar->mounted_dirs);
950 }
951
952 if (is_modified) {
953 phar_flush(phar, 0, 0, 0, &error);
954 if (error) {
955 php_url_free(resource_from);
956 php_url_free(resource_to);
957 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\": %s", url_from, url_to, error);
958 efree(error);
959 return 0;
960 }
961 }
962
963 php_url_free(resource_from);
964 php_url_free(resource_to);
965
966 return 1;
967 }
968 /* }}} */
969
970 /*
971 * Local variables:
972 * tab-width: 4
973 * c-basic-offset: 4
974 * End:
975 * vim600: noet sw=4 ts=4 fdm=marker
976 * vim<600: noet sw=4 ts=4
977 */
978
