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