xref: /PHP-5.4/ext/phar/dirstream.c (revision c0d060f5)
1 /*
2   +----------------------------------------------------------------------+
3   | phar:// stream wrapper support                                       |
4   +----------------------------------------------------------------------+
5   | Copyright (c) 2005-2014 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_DIRSTREAM 1
21 #include "phar_internal.h"
22 #include "dirstream.h"
23 
24 BEGIN_EXTERN_C()
25 void phar_dostat(phar_archive_data *phar, phar_entry_info *data, php_stream_statbuf *ssb, zend_bool is_dir TSRMLS_DC);
26 END_EXTERN_C()
27 
28 php_stream_ops phar_dir_ops = {
29 	phar_dir_write, /* write */
30 	phar_dir_read,  /* read  */
31 	phar_dir_close, /* close */
32 	phar_dir_flush, /* flush */
33 	"phar dir",
34 	phar_dir_seek,  /* seek */
35 	NULL,           /* cast */
36 	NULL,           /* stat */
37 	NULL, /* set option */
38 };
39 
40 /**
41  * Used for closedir($fp) where $fp is an opendir('phar://...') directory handle
42  */
phar_dir_close(php_stream * stream,int close_handle TSRMLS_DC)43 static int phar_dir_close(php_stream *stream, int close_handle TSRMLS_DC)  /* {{{ */
44 {
45 	HashTable *data = (HashTable *)stream->abstract;
46 
47 	if (data && data->arBuckets) {
48 		zend_hash_destroy(data);
49 		data->arBuckets = 0;
50 		FREE_HASHTABLE(data);
51 		stream->abstract = NULL;
52 	}
53 
54 	return 0;
55 }
56 /* }}} */
57 
58 /**
59  * Used for seeking on a phar directory handle
60  */
phar_dir_seek(php_stream * stream,off_t offset,int whence,off_t * newoffset TSRMLS_DC)61 static int phar_dir_seek(php_stream *stream, off_t offset, int whence, off_t *newoffset TSRMLS_DC) /* {{{ */
62 {
63 	HashTable *data = (HashTable *)stream->abstract;
64 
65 	if (!data) {
66 		return -1;
67 	}
68 
69 	if (whence == SEEK_END) {
70 		whence = SEEK_SET;
71 		offset = zend_hash_num_elements(data) + offset;
72 	}
73 
74 	if (whence == SEEK_SET) {
75 		zend_hash_internal_pointer_reset(data);
76 	}
77 
78 	if (offset < 0) {
79 		return -1;
80 	} else {
81 		*newoffset = 0;
82 		while (*newoffset < offset && zend_hash_move_forward(data) == SUCCESS) {
83 			++(*newoffset);
84 		}
85 		return 0;
86 	}
87 }
88 /* }}} */
89 
90 /**
91  * Used for readdir() on an opendir()ed phar directory handle
92  */
phar_dir_read(php_stream * stream,char * buf,size_t count TSRMLS_DC)93 static size_t phar_dir_read(php_stream *stream, char *buf, size_t count TSRMLS_DC) /* {{{ */
94 {
95 	size_t to_read;
96 	HashTable *data = (HashTable *)stream->abstract;
97 	phar_zstr key;
98 	char *str_key;
99 	uint keylen;
100 	ulong unused;
101 
102 	if (FAILURE == zend_hash_has_more_elements(data)) {
103 		return 0;
104 	}
105 
106 	if (HASH_KEY_NON_EXISTANT == zend_hash_get_current_key_ex(data, &key, &keylen, &unused, 0, NULL)) {
107 		return 0;
108 	}
109 
110 	PHAR_STR(key, str_key);
111 	zend_hash_move_forward(data);
112 	to_read = MIN(keylen, count);
113 
114 	if (to_read == 0 || count < keylen) {
115 		PHAR_STR_FREE(str_key);
116 		return 0;
117 	}
118 
119 	memset(buf, 0, sizeof(php_stream_dirent));
120 	memcpy(((php_stream_dirent *) buf)->d_name, str_key, to_read);
121 	PHAR_STR_FREE(str_key);
122 	((php_stream_dirent *) buf)->d_name[to_read + 1] = '\0';
123 
124 	return sizeof(php_stream_dirent);
125 }
126 /* }}} */
127 
128 /**
129  * Dummy: Used for writing to a phar directory (i.e. not used)
130  */
phar_dir_write(php_stream * stream,const char * buf,size_t count TSRMLS_DC)131 static size_t phar_dir_write(php_stream *stream, const char *buf, size_t count TSRMLS_DC) /* {{{ */
132 {
133 	return 0;
134 }
135 /* }}} */
136 
137 /**
138  * Dummy: Used for flushing writes to a phar directory (i.e. not used)
139  */
phar_dir_flush(php_stream * stream TSRMLS_DC)140 static int phar_dir_flush(php_stream *stream TSRMLS_DC) /* {{{ */
141 {
142 	return EOF;
143 }
144 /* }}} */
145 
146 /**
147  * add an empty element with a char * key to a hash table, avoiding duplicates
148  *
149  * This is used to get a unique listing of virtual directories within a phar,
150  * for iterating over opendir()ed phar directories.
151  */
phar_add_empty(HashTable * ht,char * arKey,uint nKeyLength)152 static int phar_add_empty(HashTable *ht, char *arKey, uint nKeyLength)  /* {{{ */
153 {
154 	void *dummy = (char *) 1;
155 
156 	return zend_hash_update(ht, arKey, nKeyLength, (void *) &dummy, sizeof(void *), NULL);
157 }
158 /* }}} */
159 
160 /**
161  * Used for sorting directories alphabetically
162  */
phar_compare_dir_name(const void * a,const void * b TSRMLS_DC)163 static int phar_compare_dir_name(const void *a, const void *b TSRMLS_DC)  /* {{{ */
164 {
165 	Bucket *f;
166 	Bucket *s;
167 	int result;
168 
169 	f = *((Bucket **) a);
170 	s = *((Bucket **) b);
171 	result = zend_binary_strcmp(f->arKey, f->nKeyLength, s->arKey, s->nKeyLength);
172 
173 	if (result < 0) {
174 		return -1;
175 	} else if (result > 0) {
176 		return 1;
177 	} else {
178 		return 0;
179 	}
180 }
181 /* }}} */
182 
183 /**
184  * Create a opendir() directory stream handle by iterating over each of the
185  * files in a phar and retrieving its relative path.  From this, construct
186  * a list of files/directories that are "in" the directory represented by dir
187  */
phar_make_dirstream(char * dir,HashTable * manifest TSRMLS_DC)188 static php_stream *phar_make_dirstream(char *dir, HashTable *manifest TSRMLS_DC) /* {{{ */
189 {
190 	HashTable *data;
191 	int dirlen = strlen(dir);
192 	phar_zstr key;
193 	char *entry, *found, *save, *str_key;
194 	uint keylen;
195 	ulong unused;
196 
197 	ALLOC_HASHTABLE(data);
198 	zend_hash_init(data, 64, zend_get_hash_value, NULL, 0);
199 
200 	if ((*dir == '/' && dirlen == 1 && (manifest->nNumOfElements == 0)) || (dirlen >= sizeof(".phar")-1 && !memcmp(dir, ".phar", sizeof(".phar")-1))) {
201 		/* make empty root directory for empty phar */
202 		/* make empty directory for .phar magic directory */
203 		efree(dir);
204 		return php_stream_alloc(&phar_dir_ops, data, NULL, "r");
205 	}
206 
207 	zend_hash_internal_pointer_reset(manifest);
208 
209 	while (FAILURE != zend_hash_has_more_elements(manifest)) {
210 		if (HASH_KEY_NON_EXISTANT == zend_hash_get_current_key_ex(manifest, &key, &keylen, &unused, 0, NULL)) {
211 			break;
212 		}
213 
214 		PHAR_STR(key, str_key);
215 
216 		if (keylen <= (uint)dirlen) {
217 			if (keylen < (uint)dirlen || !strncmp(str_key, dir, dirlen)) {
218 				PHAR_STR_FREE(str_key);
219 				if (SUCCESS != zend_hash_move_forward(manifest)) {
220 					break;
221 				}
222 				continue;
223 			}
224 		}
225 
226 		if (*dir == '/') {
227 			/* root directory */
228 			if (keylen >= sizeof(".phar")-1 && !memcmp(str_key, ".phar", sizeof(".phar")-1)) {
229 				PHAR_STR_FREE(str_key);
230 				/* do not add any magic entries to this directory */
231 				if (SUCCESS != zend_hash_move_forward(manifest)) {
232 					break;
233 				}
234 				continue;
235 			}
236 
237 			if (NULL != (found = (char *) memchr(str_key, '/', keylen))) {
238 				/* the entry has a path separator and is a subdirectory */
239 				entry = (char *) safe_emalloc(found - str_key, 1, 1);
240 				memcpy(entry, str_key, found - str_key);
241 				keylen = found - str_key;
242 				entry[keylen] = '\0';
243 			} else {
244 				entry = (char *) safe_emalloc(keylen, 1, 1);
245 				memcpy(entry, str_key, keylen);
246 				entry[keylen] = '\0';
247 			}
248 
249 			PHAR_STR_FREE(str_key);
250 			goto PHAR_ADD_ENTRY;
251 		} else {
252 			if (0 != memcmp(str_key, dir, dirlen)) {
253 				/* entry in directory not found */
254 				PHAR_STR_FREE(str_key);
255 				if (SUCCESS != zend_hash_move_forward(manifest)) {
256 					break;
257 				}
258 				continue;
259 			} else {
260 				if (str_key[dirlen] != '/') {
261 					PHAR_STR_FREE(str_key);
262 					if (SUCCESS != zend_hash_move_forward(manifest)) {
263 						break;
264 					}
265 					continue;
266 				}
267 			}
268 		}
269 
270 		save = str_key;
271 		save += dirlen + 1; /* seek to just past the path separator */
272 
273 		if (NULL != (found = (char *) memchr(save, '/', keylen - dirlen - 1))) {
274 			/* is subdirectory */
275 			save -= dirlen + 1;
276 			entry = (char *) safe_emalloc(found - save + dirlen, 1, 1);
277 			memcpy(entry, save + dirlen + 1, found - save - dirlen - 1);
278 			keylen = found - save - dirlen - 1;
279 			entry[keylen] = '\0';
280 		} else {
281 			/* is file */
282 			save -= dirlen + 1;
283 			entry = (char *) safe_emalloc(keylen - dirlen, 1, 1);
284 			memcpy(entry, save + dirlen + 1, keylen - dirlen - 1);
285 			entry[keylen - dirlen - 1] = '\0';
286 			keylen = keylen - dirlen - 1;
287 		}
288 		PHAR_STR_FREE(str_key);
289 PHAR_ADD_ENTRY:
290 		if (keylen) {
291 			phar_add_empty(data, entry, keylen);
292 		}
293 
294 		efree(entry);
295 
296 		if (SUCCESS != zend_hash_move_forward(manifest)) {
297 			break;
298 		}
299 	}
300 
301 	if (FAILURE != zend_hash_has_more_elements(data)) {
302 		efree(dir);
303 		if (zend_hash_sort(data, zend_qsort, phar_compare_dir_name, 0 TSRMLS_CC) == FAILURE) {
304 			FREE_HASHTABLE(data);
305 			return NULL;
306 		}
307 		return php_stream_alloc(&phar_dir_ops, data, NULL, "r");
308 	} else {
309 		efree(dir);
310 		return php_stream_alloc(&phar_dir_ops, data, NULL, "r");
311 	}
312 }
313 /* }}}*/
314 
315 /**
316  * Open a directory handle within a phar archive
317  */
phar_wrapper_open_dir(php_stream_wrapper * wrapper,char * path,char * mode,int options,char ** opened_path,php_stream_context * context STREAMS_DC TSRMLS_DC)318 php_stream *phar_wrapper_open_dir(php_stream_wrapper *wrapper, char *path, char *mode, int options, char **opened_path, php_stream_context *context STREAMS_DC TSRMLS_DC) /* {{{ */
319 {
320 	php_url *resource = NULL;
321 	php_stream *ret;
322 	char *internal_file, *error, *str_key;
323 	phar_zstr key;
324 	uint keylen;
325 	ulong unused;
326 	phar_archive_data *phar;
327 	phar_entry_info *entry = NULL;
328 	uint host_len;
329 
330 	if ((resource = phar_parse_url(wrapper, path, mode, options TSRMLS_CC)) == NULL) {
331 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar url \"%s\" is unknown", path);
332 		return NULL;
333 	}
334 
335 	/* we must have at the very least phar://alias.phar/ */
336 	if (!resource->scheme || !resource->host || !resource->path) {
337 		if (resource->host && !resource->path) {
338 			php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: no directory in \"%s\", must have at least phar://%s/ for root directory (always use full path to a new phar)", path, resource->host);
339 			php_url_free(resource);
340 			return NULL;
341 		}
342 		php_url_free(resource);
343 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: invalid url \"%s\", must have at least phar://%s/", path, path);
344 		return NULL;
345 	}
346 
347 	if (strcasecmp("phar", resource->scheme)) {
348 		php_url_free(resource);
349 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: not a phar url \"%s\"", path);
350 		return NULL;
351 	}
352 
353 	host_len = strlen(resource->host);
354 	phar_request_initialize(TSRMLS_C);
355 	internal_file = resource->path + 1; /* strip leading "/" */
356 
357 	if (FAILURE == phar_get_archive(&phar, resource->host, host_len, NULL, 0, &error TSRMLS_CC)) {
358 		if (error) {
359 			php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "%s", error);
360 			efree(error);
361 		} else {
362 			php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar file \"%s\" is unknown", resource->host);
363 		}
364 		php_url_free(resource);
365 		return NULL;
366 	}
367 
368 	if (error) {
369 		efree(error);
370 	}
371 
372 	if (*internal_file == '\0') {
373 		/* root directory requested */
374 		internal_file = estrndup(internal_file - 1, 1);
375 		ret = phar_make_dirstream(internal_file, &phar->manifest TSRMLS_CC);
376 		php_url_free(resource);
377 		return ret;
378 	}
379 
380 	if (!phar->manifest.arBuckets) {
381 		php_url_free(resource);
382 		return NULL;
383 	}
384 
385 	if (SUCCESS == zend_hash_find(&phar->manifest, internal_file, strlen(internal_file), (void**)&entry) && !entry->is_dir) {
386 		php_url_free(resource);
387 		return NULL;
388 	} else if (entry && entry->is_dir) {
389 		if (entry->is_mounted) {
390 			php_url_free(resource);
391 			return php_stream_opendir(entry->tmp, options, context);
392 		}
393 		internal_file = estrdup(internal_file);
394 		php_url_free(resource);
395 		return phar_make_dirstream(internal_file, &phar->manifest TSRMLS_CC);
396 	} else {
397 		int i_len = strlen(internal_file);
398 
399 		/* search for directory */
400 		zend_hash_internal_pointer_reset(&phar->manifest);
401 		while (FAILURE != zend_hash_has_more_elements(&phar->manifest)) {
402 			if (HASH_KEY_NON_EXISTANT !=
403 					zend_hash_get_current_key_ex(
404 						&phar->manifest, &key, &keylen, &unused, 0, NULL)) {
405 				PHAR_STR(key, str_key);
406 				if (keylen > (uint)i_len && 0 == memcmp(str_key, internal_file, i_len)) {
407 					PHAR_STR_FREE(str_key);
408 					/* directory found */
409 					internal_file = estrndup(internal_file,
410 							i_len);
411 					php_url_free(resource);
412 					return phar_make_dirstream(internal_file, &phar->manifest TSRMLS_CC);
413 				}
414 				PHAR_STR_FREE(str_key);
415 			}
416 
417 			if (SUCCESS != zend_hash_move_forward(&phar->manifest)) {
418 				break;
419 			}
420 		}
421 	}
422 
423 	php_url_free(resource);
424 	return NULL;
425 }
426 /* }}} */
427 
428 /**
429  * Make a new directory within a phar archive
430  */
phar_wrapper_mkdir(php_stream_wrapper * wrapper,char * url_from,int mode,int options,php_stream_context * context TSRMLS_DC)431 int phar_wrapper_mkdir(php_stream_wrapper *wrapper, char *url_from, int mode, int options, php_stream_context *context TSRMLS_DC) /* {{{ */
432 {
433 	phar_entry_info entry, *e;
434 	phar_archive_data *phar = NULL;
435 	char *error, *arch, *entry2;
436 	int arch_len, entry_len;
437 	php_url *resource = NULL;
438 	uint host_len;
439 
440 	/* pre-readonly check, we need to know if this is a data phar */
441 	if (FAILURE == phar_split_fname(url_from, strlen(url_from), &arch, &arch_len, &entry2, &entry_len, 2, 2 TSRMLS_CC)) {
442 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: cannot create directory \"%s\", no phar archive specified", url_from);
443 		return 0;
444 	}
445 
446 	if (FAILURE == phar_get_archive(&phar, arch, arch_len, NULL, 0, NULL TSRMLS_CC)) {
447 		phar = NULL;
448 	}
449 
450 	efree(arch);
451 	efree(entry2);
452 
453 	if (PHAR_G(readonly) && (!phar || !phar->is_data)) {
454 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: cannot create directory \"%s\", write operations disabled", url_from);
455 		return 0;
456 	}
457 
458 	if ((resource = phar_parse_url(wrapper, url_from, "w", options TSRMLS_CC)) == NULL) {
459 		return 0;
460 	}
461 
462 	/* we must have at the very least phar://alias.phar/internalfile.php */
463 	if (!resource->scheme || !resource->host || !resource->path) {
464 		php_url_free(resource);
465 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: invalid url \"%s\"", url_from);
466 		return 0;
467 	}
468 
469 	if (strcasecmp("phar", resource->scheme)) {
470 		php_url_free(resource);
471 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: not a phar stream url \"%s\"", url_from);
472 		return 0;
473 	}
474 
475 	host_len = strlen(resource->host);
476 
477 	if (FAILURE == phar_get_archive(&phar, resource->host, host_len, NULL, 0, &error TSRMLS_CC)) {
478 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: cannot create directory \"%s\" in phar \"%s\", error retrieving phar information: %s", resource->path+1, resource->host, error);
479 		efree(error);
480 		php_url_free(resource);
481 		return 0;
482 	}
483 
484 	if ((e = phar_get_entry_info_dir(phar, resource->path + 1, strlen(resource->path + 1), 2, &error, 1 TSRMLS_CC))) {
485 		/* directory exists, or is a subdirectory of an existing file */
486 		if (e->is_temp_dir) {
487 			efree(e->filename);
488 			efree(e);
489 		}
490 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: cannot create directory \"%s\" in phar \"%s\", directory already exists", resource->path+1, resource->host);
491 		php_url_free(resource);
492 		return 0;
493 	}
494 
495 	if (error) {
496 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: cannot create directory \"%s\" in phar \"%s\", %s", resource->path+1, resource->host, error);
497 		efree(error);
498 		php_url_free(resource);
499 		return 0;
500 	}
501 
502 	if (phar_get_entry_info_dir(phar, resource->path + 1, strlen(resource->path + 1), 0, &error, 1 TSRMLS_CC)) {
503 		/* entry exists as a file */
504 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: cannot create directory \"%s\" in phar \"%s\", file already exists", resource->path+1, resource->host);
505 		php_url_free(resource);
506 		return 0;
507 	}
508 
509 	if (error) {
510 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: cannot create directory \"%s\" in phar \"%s\", %s", resource->path+1, resource->host, error);
511 		efree(error);
512 		php_url_free(resource);
513 		return 0;
514 	}
515 
516 	memset((void *) &entry, 0, sizeof(phar_entry_info));
517 
518 	/* strip leading "/" */
519 	if (phar->is_zip) {
520 		entry.is_zip = 1;
521 	}
522 
523 	entry.filename = estrdup(resource->path + 1);
524 
525 	if (phar->is_tar) {
526 		entry.is_tar = 1;
527 		entry.tar_type = TAR_DIR;
528 	}
529 
530 	entry.filename_len = strlen(resource->path + 1);
531 	php_url_free(resource);
532 	entry.is_dir = 1;
533 	entry.phar = phar;
534 	entry.is_modified = 1;
535 	entry.is_crc_checked = 1;
536 	entry.flags = PHAR_ENT_PERM_DEF_DIR;
537 	entry.old_flags = PHAR_ENT_PERM_DEF_DIR;
538 
539 	if (SUCCESS != zend_hash_add(&phar->manifest, entry.filename, entry.filename_len, (void*)&entry, sizeof(phar_entry_info), NULL)) {
540 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: cannot create directory \"%s\" in phar \"%s\", adding to manifest failed", entry.filename, phar->fname);
541 		efree(error);
542 		efree(entry.filename);
543 		return 0;
544 	}
545 
546 	phar_flush(phar, 0, 0, 0, &error TSRMLS_CC);
547 
548 	if (error) {
549 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: cannot create directory \"%s\" in phar \"%s\", %s", entry.filename, phar->fname, error);
550 		zend_hash_del(&phar->manifest, entry.filename, entry.filename_len);
551 		efree(error);
552 		return 0;
553 	}
554 
555 	phar_add_virtual_dirs(phar, entry.filename, entry.filename_len TSRMLS_CC);
556 	return 1;
557 }
558 /* }}} */
559 
560 /**
561  * Remove a directory within a phar archive
562  */
phar_wrapper_rmdir(php_stream_wrapper * wrapper,char * url,int options,php_stream_context * context TSRMLS_DC)563 int phar_wrapper_rmdir(php_stream_wrapper *wrapper, char *url, int options, php_stream_context *context TSRMLS_DC) /* {{{ */
564 {
565 	phar_entry_info *entry;
566 	phar_archive_data *phar = NULL;
567 	char *error, *arch, *entry2;
568 	int arch_len, entry_len;
569 	php_url *resource = NULL;
570 	uint host_len;
571 	phar_zstr key;
572 	char *str_key;
573 	uint key_len;
574 	ulong unused;
575 	uint path_len;
576 
577 	/* pre-readonly check, we need to know if this is a data phar */
578 	if (FAILURE == phar_split_fname(url, strlen(url), &arch, &arch_len, &entry2, &entry_len, 2, 2 TSRMLS_CC)) {
579 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: cannot remove directory \"%s\", no phar archive specified, or phar archive does not exist", url);
580 		return 0;
581 	}
582 
583 	if (FAILURE == phar_get_archive(&phar, arch, arch_len, NULL, 0, NULL TSRMLS_CC)) {
584 		phar = NULL;
585 	}
586 
587 	efree(arch);
588 	efree(entry2);
589 
590 	if (PHAR_G(readonly) && (!phar || !phar->is_data)) {
591 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: cannot rmdir directory \"%s\", write operations disabled", url);
592 		return 0;
593 	}
594 
595 	if ((resource = phar_parse_url(wrapper, url, "w", options TSRMLS_CC)) == NULL) {
596 		return 0;
597 	}
598 
599 	/* we must have at the very least phar://alias.phar/internalfile.php */
600 	if (!resource->scheme || !resource->host || !resource->path) {
601 		php_url_free(resource);
602 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: invalid url \"%s\"", url);
603 		return 0;
604 	}
605 
606 	if (strcasecmp("phar", resource->scheme)) {
607 		php_url_free(resource);
608 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: not a phar stream url \"%s\"", url);
609 		return 0;
610 	}
611 
612 	host_len = strlen(resource->host);
613 
614 	if (FAILURE == phar_get_archive(&phar, resource->host, host_len, NULL, 0, &error TSRMLS_CC)) {
615 		php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: cannot remove directory \"%s\" in phar \"%s\", error retrieving phar information: %s", resource->path+1, resource->host, error);
616 		efree(error);
617 		php_url_free(resource);
618 		return 0;
619 	}
620 
621 	path_len = strlen(resource->path+1);
622 
623 	if (!(entry = phar_get_entry_info_dir(phar, resource->path + 1, path_len, 2, &error, 1 TSRMLS_CC))) {
624 		if (error) {
625 			php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: cannot remove directory \"%s\" in phar \"%s\", %s", resource->path+1, resource->host, error);
626 			efree(error);
627 		} else {
628 			php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: cannot remove directory \"%s\" in phar \"%s\", directory does not exist", resource->path+1, resource->host);
629 		}
630 		php_url_free(resource);
631 		return 0;
632 	}
633 
634 	if (!entry->is_deleted) {
635 		for (zend_hash_internal_pointer_reset(&phar->manifest);
636 		HASH_KEY_NON_EXISTANT != zend_hash_get_current_key_ex(&phar->manifest, &key, &key_len, &unused, 0, NULL);
637 		zend_hash_move_forward(&phar->manifest)) {
638 
639 			PHAR_STR(key, str_key);
640 
641 			if (key_len > path_len &&
642 				memcmp(str_key, resource->path+1, path_len) == 0 &&
643 				IS_SLASH(str_key[path_len])) {
644 				PHAR_STR_FREE(str_key);
645 				php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: Directory not empty");
646 				if (entry->is_temp_dir) {
647 					efree(entry->filename);
648 					efree(entry);
649 				}
650 				php_url_free(resource);
651 				return 0;
652 			}
653 			PHAR_STR_FREE(str_key);
654 		}
655 
656 		for (zend_hash_internal_pointer_reset(&phar->virtual_dirs);
657 			HASH_KEY_NON_EXISTANT != zend_hash_get_current_key_ex(&phar->virtual_dirs, &key, &key_len, &unused, 0, NULL);
658 			zend_hash_move_forward(&phar->virtual_dirs)) {
659 
660 			PHAR_STR(key, str_key);
661 
662 			if (key_len > path_len &&
663 				memcmp(str_key, resource->path+1, path_len) == 0 &&
664 				IS_SLASH(str_key[path_len])) {
665 				PHAR_STR_FREE(str_key);
666 				php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: Directory not empty");
667 				if (entry->is_temp_dir) {
668 					efree(entry->filename);
669 					efree(entry);
670 				}
671 				php_url_free(resource);
672 				return 0;
673 			}
674 			PHAR_STR_FREE(str_key);
675 		}
676 	}
677 
678 	if (entry->is_temp_dir) {
679 		zend_hash_del(&phar->virtual_dirs, resource->path+1, path_len);
680 		efree(entry->filename);
681 		efree(entry);
682 	} else {
683 		entry->is_deleted = 1;
684 		entry->is_modified = 1;
685 		phar_flush(phar, 0, 0, 0, &error TSRMLS_CC);
686 
687 		if (error) {
688 			php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "phar error: cannot remove directory \"%s\" in phar \"%s\", %s", entry->filename, phar->fname, error);
689 			php_url_free(resource);
690 			efree(error);
691 			return 0;
692 		}
693 	}
694 
695 	php_url_free(resource);
696 	return 1;
697 }
698 /* }}} */
699 
700 /*
701  * Local variables:
702  * tab-width: 4
703  * c-basic-offset: 4
704  * End:
705  * vim600: noet sw=4 ts=4 fdm=marker
706  * vim<600: noet sw=4 ts=4
707  */
708