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 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 #if 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_FLAGS(&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 if (Z_TYPE(idata->internal_file->metadata) != IS_UNDEF) {
227 zval_ptr_dtor(&idata->internal_file->metadata);
228 ZVAL_UNDEF(&idata->internal_file->metadata);
229 }
230
231 metadata = pzoption;
232 ZVAL_COPY_DEREF(&idata->internal_file->metadata, metadata);
233 idata->phar->is_modified = 1;
234 }
235 }
236 if (opened_path) {
237 *opened_path = strpprintf(MAXPATHLEN, "phar://%s/%s", idata->phar->fname, idata->internal_file->filename);
238 }
239 return fpf;
240 } else {
241 if (!*internal_file && (options & STREAM_OPEN_FOR_INCLUDE)) {
242 /* retrieve the stub */
243 if (FAILURE == phar_get_archive(&phar, ZSTR_VAL(resource->host), host_len, NULL, 0, NULL)) {
244 php_stream_wrapper_log_error(wrapper, options, "file %s is not a valid phar archive", ZSTR_VAL(resource->host));
245 efree(internal_file);
246 php_url_free(resource);
247 return NULL;
248 }
249 if (phar->is_tar || phar->is_zip) {
250 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) {
251 goto idata_error;
252 }
253 efree(internal_file);
254 if (opened_path) {
255 *opened_path = strpprintf(MAXPATHLEN, "%s", phar->fname);
256 }
257 php_url_free(resource);
258 goto phar_stub;
259 } else {
260 phar_entry_info *entry;
261
262 entry = (phar_entry_info *) ecalloc(1, sizeof(phar_entry_info));
263 entry->is_temp_dir = 1;
264 entry->filename = estrndup("", 0);
265 entry->filename_len = 0;
266 entry->phar = phar;
267 entry->offset = entry->offset_abs = 0;
268 entry->compressed_filesize = entry->uncompressed_filesize = phar->halt_offset;
269 entry->is_crc_checked = 1;
270
271 idata = (phar_entry_data *) ecalloc(1, sizeof(phar_entry_data));
272 idata->fp = phar_get_pharfp(phar);
273 idata->phar = phar;
274 idata->internal_file = entry;
275 if (!phar->is_persistent) {
276 ++(entry->phar->refcount);
277 }
278 ++(entry->fp_refcount);
279 php_url_free(resource);
280 if (opened_path) {
281 *opened_path = strpprintf(MAXPATHLEN, "%s", phar->fname);
282 }
283 efree(internal_file);
284 goto phar_stub;
285 }
286 }
287 /* read-only access is allowed to magic files in .phar directory */
288 if ((FAILURE == phar_get_entry_data(&idata, ZSTR_VAL(resource->host), host_len, internal_file, strlen(internal_file), "r", 0, &error, 0)) || !idata) {
289 idata_error:
290 if (error) {
291 php_stream_wrapper_log_error(wrapper, options, "%s", error);
292 efree(error);
293 } else {
294 php_stream_wrapper_log_error(wrapper, options, "phar error: \"%s\" is not a file in phar \"%s\"", internal_file, ZSTR_VAL(resource->host));
295 }
296 efree(internal_file);
297 php_url_free(resource);
298 return NULL;
299 }
300 }
301 php_url_free(resource);
302 #if MBO_0
303 fprintf(stderr, "Pharname: %s\n", idata->phar->filename);
304 fprintf(stderr, "Filename: %s\n", internal_file);
305 fprintf(stderr, "Entry: %s\n", idata->internal_file->filename);
306 fprintf(stderr, "Size: %u\n", idata->internal_file->uncompressed_filesize);
307 fprintf(stderr, "Compressed: %u\n", idata->internal_file->flags);
308 fprintf(stderr, "Offset: %u\n", idata->internal_file->offset_within_phar);
309 fprintf(stderr, "Cached: %s\n", idata->internal_file->filedata ? "yes" : "no");
310 #endif
311
312 /* check length, crc32 */
313 if (!idata->internal_file->is_crc_checked && phar_postprocess_file(idata, idata->internal_file->crc32, &error, 2) != SUCCESS) {
314 php_stream_wrapper_log_error(wrapper, options, "%s", error);
315 efree(error);
316 phar_entry_delref(idata);
317 efree(internal_file);
318 return NULL;
319 }
320
321 if (!PHAR_G(cwd_init) && options & STREAM_OPEN_FOR_INCLUDE) {
322 char *entry = idata->internal_file->filename, *cwd;
323
324 PHAR_G(cwd_init) = 1;
325 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)) {
326 /* we're executing the stub, which doesn't count as a file */
327 PHAR_G(cwd_init) = 0;
328 } else if ((cwd = strrchr(entry, '/'))) {
329 PHAR_G(cwd_len) = cwd - entry;
330 PHAR_G(cwd) = estrndup(entry, PHAR_G(cwd_len));
331 } else {
332 /* root directory */
333 PHAR_G(cwd_len) = 0;
334 PHAR_G(cwd) = NULL;
335 }
336 }
337 if (opened_path) {
338 *opened_path = strpprintf(MAXPATHLEN, "phar://%s/%s", idata->phar->fname, idata->internal_file->filename);
339 }
340 efree(internal_file);
341 phar_stub:
342 fpf = php_stream_alloc(&phar_ops, idata, NULL, mode);
343 return fpf;
344 }
345 /* }}} */
346
347 /**
348 * Used for fclose($fp) where $fp is a phar archive
349 */
phar_stream_close(php_stream * stream,int close_handle)350 static int phar_stream_close(php_stream *stream, int close_handle) /* {{{ */
351 {
352 /* for some reasons phar needs to be flushed even if there is no write going on */
353 phar_stream_flush(stream);
354
355 phar_entry_delref((phar_entry_data *)stream->abstract);
356
357 return 0;
358 }
359 /* }}} */
360
361 /**
362 * used for fread($fp) and company on a fopen()ed phar file handle
363 */
phar_stream_read(php_stream * stream,char * buf,size_t count)364 static size_t phar_stream_read(php_stream *stream, char *buf, size_t count) /* {{{ */
365 {
366 phar_entry_data *data = (phar_entry_data *)stream->abstract;
367 size_t got;
368 phar_entry_info *entry;
369
370 if (data->internal_file->link) {
371 entry = phar_get_link_source(data->internal_file);
372 } else {
373 entry = data->internal_file;
374 }
375
376 if (entry->is_deleted) {
377 stream->eof = 1;
378 return 0;
379 }
380
381 /* use our proxy position */
382 php_stream_seek(data->fp, data->position + data->zero, SEEK_SET);
383
384 got = php_stream_read(data->fp, buf, MIN(count, (size_t)(entry->uncompressed_filesize - data->position)));
385 data->position = php_stream_tell(data->fp) - data->zero;
386 stream->eof = (data->position == (zend_off_t) entry->uncompressed_filesize);
387
388 return got;
389 }
390 /* }}} */
391
392 /**
393 * Used for fseek($fp) on a phar file handle
394 */
phar_stream_seek(php_stream * stream,zend_off_t offset,int whence,zend_off_t * newoffset)395 static int phar_stream_seek(php_stream *stream, zend_off_t offset, int whence, zend_off_t *newoffset) /* {{{ */
396 {
397 phar_entry_data *data = (phar_entry_data *)stream->abstract;
398 phar_entry_info *entry;
399 int res;
400 zend_off_t temp;
401
402 if (data->internal_file->link) {
403 entry = phar_get_link_source(data->internal_file);
404 } else {
405 entry = data->internal_file;
406 }
407
408 switch (whence) {
409 case SEEK_END :
410 temp = data->zero + entry->uncompressed_filesize + offset;
411 break;
412 case SEEK_CUR :
413 temp = data->zero + data->position + offset;
414 break;
415 case SEEK_SET :
416 temp = data->zero + offset;
417 break;
418 default:
419 temp = 0;
420 }
421 if (temp > data->zero + (zend_off_t) entry->uncompressed_filesize) {
422 *newoffset = -1;
423 return -1;
424 }
425 if (temp < data->zero) {
426 *newoffset = -1;
427 return -1;
428 }
429 res = php_stream_seek(data->fp, temp, SEEK_SET);
430 *newoffset = php_stream_tell(data->fp) - data->zero;
431 data->position = *newoffset;
432 return res;
433 }
434 /* }}} */
435
436 /**
437 * Used for writing to a phar file
438 */
phar_stream_write(php_stream * stream,const char * buf,size_t count)439 static size_t phar_stream_write(php_stream *stream, const char *buf, size_t count) /* {{{ */
440 {
441 phar_entry_data *data = (phar_entry_data *) stream->abstract;
442
443 php_stream_seek(data->fp, data->position, SEEK_SET);
444 if (count != php_stream_write(data->fp, buf, count)) {
445 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);
446 return 0;
447 }
448 data->position = php_stream_tell(data->fp);
449 if (data->position > (zend_off_t)data->internal_file->uncompressed_filesize) {
450 data->internal_file->uncompressed_filesize = data->position;
451 }
452 data->internal_file->compressed_filesize = data->internal_file->uncompressed_filesize;
453 data->internal_file->old_flags = data->internal_file->flags;
454 data->internal_file->is_modified = 1;
455 return count;
456 }
457 /* }}} */
458
459 /**
460 * Used to save work done on a writeable phar
461 */
phar_stream_flush(php_stream * stream)462 static int phar_stream_flush(php_stream *stream) /* {{{ */
463 {
464 char *error;
465 int ret;
466 phar_entry_data *data = (phar_entry_data *) stream->abstract;
467
468 if (data->internal_file->is_modified) {
469 data->internal_file->timestamp = time(0);
470 ret = phar_flush(data->phar, 0, 0, 0, &error);
471 if (error) {
472 php_stream_wrapper_log_error(stream->wrapper, REPORT_ERRORS, "%s", error);
473 efree(error);
474 }
475 return ret;
476 } else {
477 return EOF;
478 }
479 }
480 /* }}} */
481
482 /* {{{ phar_dostat */
483 /**
484 * stat an opened phar file handle stream, used by phar_stat()
485 */
phar_dostat(phar_archive_data * phar,phar_entry_info * data,php_stream_statbuf * ssb,zend_bool is_temp_dir)486 void phar_dostat(phar_archive_data *phar, phar_entry_info *data, php_stream_statbuf *ssb, zend_bool is_temp_dir)
487 {
488 memset(ssb, 0, sizeof(php_stream_statbuf));
489
490 if (!is_temp_dir && !data->is_dir) {
491 ssb->sb.st_size = data->uncompressed_filesize;
492 ssb->sb.st_mode = data->flags & PHAR_ENT_PERM_MASK;
493 ssb->sb.st_mode |= S_IFREG; /* regular file */
494 /* timestamp is just the timestamp when this was added to the phar */
495 ssb->sb.st_mtime = data->timestamp;
496 ssb->sb.st_atime = data->timestamp;
497 ssb->sb.st_ctime = data->timestamp;
498 } else if (!is_temp_dir && data->is_dir) {
499 ssb->sb.st_size = 0;
500 ssb->sb.st_mode = data->flags & PHAR_ENT_PERM_MASK;
501 ssb->sb.st_mode |= S_IFDIR; /* regular directory */
502 /* timestamp is just the timestamp when this was added to the phar */
503 ssb->sb.st_mtime = data->timestamp;
504 ssb->sb.st_atime = data->timestamp;
505 ssb->sb.st_ctime = data->timestamp;
506 } else {
507 ssb->sb.st_size = 0;
508 ssb->sb.st_mode = 0777;
509 ssb->sb.st_mode |= S_IFDIR; /* regular directory */
510 ssb->sb.st_mtime = phar->max_timestamp;
511 ssb->sb.st_atime = phar->max_timestamp;
512 ssb->sb.st_ctime = phar->max_timestamp;
513 }
514 if (!phar->is_writeable) {
515 ssb->sb.st_mode = (ssb->sb.st_mode & 0555) | (ssb->sb.st_mode & ~0777);
516 }
517
518 ssb->sb.st_nlink = 1;
519 ssb->sb.st_rdev = -1;
520 /* this is only for APC, so use /dev/null device - no chance of conflict there! */
521 ssb->sb.st_dev = 0xc;
522 /* generate unique inode number for alias/filename, so no phars will conflict */
523 if (!is_temp_dir) {
524 ssb->sb.st_ino = data->inode;
525 }
526 #ifndef PHP_WIN32
527 ssb->sb.st_blksize = -1;
528 ssb->sb.st_blocks = -1;
529 #endif
530 }
531 /* }}}*/
532
533 /**
534 * Stat an opened phar file handle
535 */
phar_stream_stat(php_stream * stream,php_stream_statbuf * ssb)536 static int phar_stream_stat(php_stream *stream, php_stream_statbuf *ssb) /* {{{ */
537 {
538 phar_entry_data *data = (phar_entry_data *)stream->abstract;
539
540 /* If ssb is NULL then someone is misbehaving */
541 if (!ssb) {
542 return -1;
543 }
544
545 phar_dostat(data->phar, data->internal_file, ssb, 0);
546 return 0;
547 }
548 /* }}} */
549
550 /**
551 * Stream wrapper stat implementation of stat()
552 */
phar_wrapper_stat(php_stream_wrapper * wrapper,const char * url,int flags,php_stream_statbuf * ssb,php_stream_context * context)553 static int phar_wrapper_stat(php_stream_wrapper *wrapper, const char *url, int flags,
554 php_stream_statbuf *ssb, php_stream_context *context) /* {{{ */
555 {
556 php_url *resource = NULL;
557 char *internal_file, *error;
558 phar_archive_data *phar;
559 phar_entry_info *entry;
560 uint32_t host_len;
561 size_t internal_file_len;
562
563 if ((resource = phar_parse_url(wrapper, url, "r", flags|PHP_STREAM_URL_STAT_QUIET)) == NULL) {
564 return FAILURE;
565 }
566
567 /* we must have at the very least phar://alias.phar/internalfile.php */
568 if (!resource->scheme || !resource->host || !resource->path) {
569 php_url_free(resource);
570 return FAILURE;
571 }
572
573 if (!zend_string_equals_literal_ci(resource->scheme, "phar")) {
574 php_url_free(resource);
575 return FAILURE;
576 }
577
578 host_len = ZSTR_LEN(resource->host);
579 phar_request_initialize();
580
581 internal_file = ZSTR_VAL(resource->path) + 1; /* strip leading "/" */
582 /* find the phar in our trusty global hash indexed by alias (host of phar://blah.phar/file.whatever) */
583 if (FAILURE == phar_get_archive(&phar, ZSTR_VAL(resource->host), host_len, NULL, 0, &error)) {
584 php_url_free(resource);
585 if (error) {
586 efree(error);
587 }
588 return FAILURE;
589 }
590 if (error) {
591 efree(error);
592 }
593 if (*internal_file == '\0') {
594 /* root directory requested */
595 phar_dostat(phar, NULL, ssb, 1);
596 php_url_free(resource);
597 return SUCCESS;
598 }
599 if (!HT_FLAGS(&phar->manifest)) {
600 php_url_free(resource);
601 return FAILURE;
602 }
603 internal_file_len = strlen(internal_file);
604 /* search through the manifest of files, and if we have an exact match, it's a file */
605 if (NULL != (entry = zend_hash_str_find_ptr(&phar->manifest, internal_file, internal_file_len))) {
606 phar_dostat(phar, entry, ssb, 0);
607 php_url_free(resource);
608 return SUCCESS;
609 }
610 if (zend_hash_str_exists(&(phar->virtual_dirs), internal_file, internal_file_len)) {
611 phar_dostat(phar, NULL, ssb, 1);
612 php_url_free(resource);
613 return SUCCESS;
614 }
615 /* check for mounted directories */
616 if (HT_FLAGS(&phar->mounted_dirs) && zend_hash_num_elements(&phar->mounted_dirs)) {
617 zend_string *str_key;
618
619 ZEND_HASH_FOREACH_STR_KEY(&phar->mounted_dirs, str_key) {
620 if (ZSTR_LEN(str_key) >= internal_file_len || strncmp(ZSTR_VAL(str_key), internal_file, ZSTR_LEN(str_key))) {
621 continue;
622 } else {
623 char *test;
624 size_t test_len;
625 php_stream_statbuf ssbi;
626
627 if (NULL == (entry = zend_hash_find_ptr(&phar->manifest, str_key))) {
628 goto free_resource;
629 }
630 if (!entry->tmp || !entry->is_mounted) {
631 goto free_resource;
632 }
633 test_len = spprintf(&test, MAXPATHLEN, "%s%s", entry->tmp, internal_file + ZSTR_LEN(str_key));
634 if (SUCCESS != php_stream_stat_path(test, &ssbi)) {
635 efree(test);
636 continue;
637 }
638 /* mount the file/directory just in time */
639 if (SUCCESS != phar_mount_entry(phar, test, test_len, internal_file, internal_file_len)) {
640 efree(test);
641 goto free_resource;
642 }
643 efree(test);
644 if (NULL == (entry = zend_hash_str_find_ptr(&phar->manifest, internal_file, internal_file_len))) {
645 goto free_resource;
646 }
647 phar_dostat(phar, entry, ssb, 0);
648 php_url_free(resource);
649 return SUCCESS;
650 }
651 } ZEND_HASH_FOREACH_END();
652 }
653 free_resource:
654 php_url_free(resource);
655 return FAILURE;
656 }
657 /* }}} */
658
659 /**
660 * Unlink a file within a phar archive
661 */
phar_wrapper_unlink(php_stream_wrapper * wrapper,const char * url,int options,php_stream_context * context)662 static int phar_wrapper_unlink(php_stream_wrapper *wrapper, const char *url, int options, php_stream_context *context) /* {{{ */
663 {
664 php_url *resource;
665 char *internal_file, *error;
666 int internal_file_len;
667 phar_entry_data *idata;
668 phar_archive_data *pphar;
669 uint32_t host_len;
670
671 if ((resource = phar_parse_url(wrapper, url, "rb", options)) == NULL) {
672 php_stream_wrapper_log_error(wrapper, options, "phar error: unlink failed");
673 return 0;
674 }
675
676 /* we must have at the very least phar://alias.phar/internalfile.php */
677 if (!resource->scheme || !resource->host || !resource->path) {
678 php_url_free(resource);
679 php_stream_wrapper_log_error(wrapper, options, "phar error: invalid url \"%s\"", url);
680 return 0;
681 }
682
683 if (!zend_string_equals_literal_ci(resource->scheme, "phar")) {
684 php_url_free(resource);
685 php_stream_wrapper_log_error(wrapper, options, "phar error: not a phar stream url \"%s\"", url);
686 return 0;
687 }
688
689 host_len = ZSTR_LEN(resource->host);
690 phar_request_initialize();
691
692 pphar = zend_hash_find_ptr(&(PHAR_G(phar_fname_map)), resource->host);
693 if (PHAR_G(readonly) && (!pphar || !pphar->is_data)) {
694 php_url_free(resource);
695 php_stream_wrapper_log_error(wrapper, options, "phar error: write operations disabled by the php.ini setting phar.readonly");
696 return 0;
697 }
698
699 /* need to copy to strip leading "/", will get touched again */
700 internal_file = estrndup(ZSTR_VAL(resource->path) + 1, ZSTR_LEN(resource->path) - 1);
701 internal_file_len = ZSTR_LEN(resource->path) - 1;
702 if (FAILURE == phar_get_entry_data(&idata, ZSTR_VAL(resource->host), host_len, internal_file, internal_file_len, "r", 0, &error, 1)) {
703 /* constraints of fp refcount were not met */
704 if (error) {
705 php_stream_wrapper_log_error(wrapper, options, "unlink of \"%s\" failed: %s", url, error);
706 efree(error);
707 } else {
708 php_stream_wrapper_log_error(wrapper, options, "unlink of \"%s\" failed, file does not exist", url);
709 }
710 efree(internal_file);
711 php_url_free(resource);
712 return 0;
713 }
714 if (error) {
715 efree(error);
716 }
717 if (idata->internal_file->fp_refcount > 1) {
718 /* more than just our fp resource is open for this file */
719 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));
720 efree(internal_file);
721 php_url_free(resource);
722 phar_entry_delref(idata);
723 return 0;
724 }
725 php_url_free(resource);
726 efree(internal_file);
727 phar_entry_remove(idata, &error);
728 if (error) {
729 php_stream_wrapper_log_error(wrapper, options, "%s", error);
730 efree(error);
731 }
732 return 1;
733 }
734 /* }}} */
735
phar_wrapper_rename(php_stream_wrapper * wrapper,const char * url_from,const char * url_to,int options,php_stream_context * context)736 static int phar_wrapper_rename(php_stream_wrapper *wrapper, const char *url_from, const char *url_to, int options, php_stream_context *context) /* {{{ */
737 {
738 php_url *resource_from, *resource_to;
739 char *error;
740 phar_archive_data *phar, *pfrom, *pto;
741 phar_entry_info *entry;
742 uint32_t host_len;
743 int is_dir = 0;
744 int is_modified = 0;
745
746 error = NULL;
747
748 if ((resource_from = phar_parse_url(wrapper, url_from, "wb", options|PHP_STREAM_URL_STAT_QUIET)) == NULL) {
749 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);
750 return 0;
751 }
752 if (SUCCESS != phar_get_archive(&pfrom, ZSTR_VAL(resource_from->host), ZSTR_LEN(resource_from->host), NULL, 0, &error)) {
753 pfrom = NULL;
754 if (error) {
755 efree(error);
756 }
757 }
758 if (PHAR_G(readonly) && (!pfrom || !pfrom->is_data)) {
759 php_url_free(resource_from);
760 php_error_docref(NULL, E_WARNING, "phar error: Write operations disabled by the php.ini setting phar.readonly");
761 return 0;
762 }
763
764 if ((resource_to = phar_parse_url(wrapper, url_to, "wb", options|PHP_STREAM_URL_STAT_QUIET)) == NULL) {
765 php_url_free(resource_from);
766 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);
767 return 0;
768 }
769 if (SUCCESS != phar_get_archive(&pto, ZSTR_VAL(resource_to->host), ZSTR_LEN(resource_to->host), NULL, 0, &error)) {
770 if (error) {
771 efree(error);
772 }
773 pto = NULL;
774 }
775 if (PHAR_G(readonly) && (!pto || !pto->is_data)) {
776 php_url_free(resource_from);
777 php_error_docref(NULL, E_WARNING, "phar error: Write operations disabled by the php.ini setting phar.readonly");
778 return 0;
779 }
780
781 if (!zend_string_equals(resource_from->host, resource_to->host)) {
782 php_url_free(resource_from);
783 php_url_free(resource_to);
784 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\", not within the same phar archive", url_from, url_to);
785 return 0;
786 }
787
788 /* we must have at the very least phar://alias.phar/internalfile.php */
789 if (!resource_from->scheme || !resource_from->host || !resource_from->path) {
790 php_url_free(resource_from);
791 php_url_free(resource_to);
792 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\": invalid url \"%s\"", url_from, url_to, url_from);
793 return 0;
794 }
795
796 if (!resource_to->scheme || !resource_to->host || !resource_to->path) {
797 php_url_free(resource_from);
798 php_url_free(resource_to);
799 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\": invalid url \"%s\"", url_from, url_to, url_to);
800 return 0;
801 }
802
803 if (!zend_string_equals_literal_ci(resource_from->scheme, "phar")) {
804 php_url_free(resource_from);
805 php_url_free(resource_to);
806 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);
807 return 0;
808 }
809
810 if (!zend_string_equals_literal_ci(resource_to->scheme, "phar")) {
811 php_url_free(resource_from);
812 php_url_free(resource_to);
813 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);
814 return 0;
815 }
816
817 host_len = ZSTR_LEN(resource_from->host);
818
819 if (SUCCESS != phar_get_archive(&phar, ZSTR_VAL(resource_from->host), host_len, NULL, 0, &error)) {
820 php_url_free(resource_from);
821 php_url_free(resource_to);
822 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\": %s", url_from, url_to, error);
823 efree(error);
824 return 0;
825 }
826
827 if (phar->is_persistent && FAILURE == phar_copy_on_write(&phar)) {
828 php_url_free(resource_from);
829 php_url_free(resource_to);
830 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\": could not make cached phar writeable", url_from, url_to);
831 return 0;
832 }
833
834 if (NULL != (entry = zend_hash_str_find_ptr(&(phar->manifest), ZSTR_VAL(resource_from->path)+1, ZSTR_LEN(resource_from->path)-1))) {
835 phar_entry_info new, *source;
836
837 /* perform rename magic */
838 if (entry->is_deleted) {
839 php_url_free(resource_from);
840 php_url_free(resource_to);
841 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);
842 return 0;
843 }
844 /* transfer all data over to the new entry */
845 memcpy((void *) &new, (void *) entry, sizeof(phar_entry_info));
846 /* mark the old one for deletion */
847 entry->is_deleted = 1;
848 entry->fp = NULL;
849 ZVAL_UNDEF(&entry->metadata);
850 entry->link = entry->tmp = NULL;
851 source = entry;
852
853 /* add to the manifest, and then store the pointer to the new guy in entry */
854 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));
855
856 entry->filename = estrndup(ZSTR_VAL(resource_to->path)+1, ZSTR_LEN(resource_to->path)-1);
857 if (FAILURE == phar_copy_entry_fp(source, entry, &error)) {
858 php_url_free(resource_from);
859 php_url_free(resource_to);
860 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\": %s", url_from, url_to, error);
861 efree(error);
862 zend_hash_str_del(&(phar->manifest), entry->filename, strlen(entry->filename));
863 return 0;
864 }
865 is_modified = 1;
866 entry->is_modified = 1;
867 entry->filename_len = strlen(entry->filename);
868 is_dir = entry->is_dir;
869 } else {
870 is_dir = zend_hash_str_exists(&(phar->virtual_dirs), ZSTR_VAL(resource_from->path)+1, ZSTR_LEN(resource_from->path)-1);
871 if (!is_dir) {
872 /* file does not exist */
873 php_url_free(resource_from);
874 php_url_free(resource_to);
875 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);
876 return 0;
877
878 }
879 }
880
881 /* Rename directory. Update all nested paths */
882 if (is_dir) {
883 Bucket *b;
884 zend_string *str_key;
885 zend_string *new_str_key;
886 uint32_t from_len = ZSTR_LEN(resource_from->path) - 1;
887 uint32_t to_len = ZSTR_LEN(resource_to->path) - 1;
888
889 ZEND_HASH_FOREACH_BUCKET(&phar->manifest, b) {
890 str_key = b->key;
891 entry = Z_PTR(b->val);
892 if (!entry->is_deleted &&
893 ZSTR_LEN(str_key) > from_len &&
894 memcmp(ZSTR_VAL(str_key), ZSTR_VAL(resource_from->path)+1, from_len) == 0 &&
895 IS_SLASH(ZSTR_VAL(str_key)[from_len])) {
896
897 new_str_key = zend_string_alloc(ZSTR_LEN(str_key) + to_len - from_len, 0);
898 memcpy(ZSTR_VAL(new_str_key), ZSTR_VAL(resource_to->path) + 1, to_len);
899 memcpy(ZSTR_VAL(new_str_key) + to_len, ZSTR_VAL(str_key) + from_len, ZSTR_LEN(str_key) - from_len);
900 ZSTR_VAL(new_str_key)[ZSTR_LEN(new_str_key)] = 0;
901
902 is_modified = 1;
903 entry->is_modified = 1;
904 efree(entry->filename);
905 // TODO: avoid reallocation (make entry->filename zend_string*)
906 entry->filename = estrndup(ZSTR_VAL(new_str_key), ZSTR_LEN(new_str_key));
907 entry->filename_len = ZSTR_LEN(new_str_key);
908
909 zend_string_release_ex(str_key, 0);
910 b->h = zend_string_hash_val(new_str_key);
911 b->key = new_str_key;
912 }
913 } ZEND_HASH_FOREACH_END();
914 zend_hash_rehash(&phar->manifest);
915
916 ZEND_HASH_FOREACH_BUCKET(&phar->virtual_dirs, b) {
917 str_key = b->key;
918 if (ZSTR_LEN(str_key) >= from_len &&
919 memcmp(ZSTR_VAL(str_key), ZSTR_VAL(resource_from->path)+1, from_len) == 0 &&
920 (ZSTR_LEN(str_key) == from_len || IS_SLASH(ZSTR_VAL(str_key)[from_len]))) {
921
922 new_str_key = zend_string_alloc(ZSTR_LEN(str_key) + to_len - from_len, 0);
923 memcpy(ZSTR_VAL(new_str_key), ZSTR_VAL(resource_to->path) + 1, to_len);
924 memcpy(ZSTR_VAL(new_str_key) + to_len, ZSTR_VAL(str_key) + from_len, ZSTR_LEN(str_key) - from_len);
925 ZSTR_VAL(new_str_key)[ZSTR_LEN(new_str_key)] = 0;
926
927 zend_string_release_ex(str_key, 0);
928 b->h = zend_string_hash_val(new_str_key);
929 b->key = new_str_key;
930 }
931 } ZEND_HASH_FOREACH_END();
932 zend_hash_rehash(&phar->virtual_dirs);
933
934 ZEND_HASH_FOREACH_BUCKET(&phar->mounted_dirs, b) {
935 str_key = b->key;
936 if (ZSTR_LEN(str_key) >= from_len &&
937 memcmp(ZSTR_VAL(str_key), ZSTR_VAL(resource_from->path)+1, from_len) == 0 &&
938 (ZSTR_LEN(str_key) == from_len || IS_SLASH(ZSTR_VAL(str_key)[from_len]))) {
939
940 new_str_key = zend_string_alloc(ZSTR_LEN(str_key) + to_len - from_len, 0);
941 memcpy(ZSTR_VAL(new_str_key), ZSTR_VAL(resource_to->path) + 1, to_len);
942 memcpy(ZSTR_VAL(new_str_key) + to_len, ZSTR_VAL(str_key) + from_len, ZSTR_LEN(str_key) - from_len);
943 ZSTR_VAL(new_str_key)[ZSTR_LEN(new_str_key)] = 0;
944
945 zend_string_release_ex(str_key, 0);
946 b->h = zend_string_hash_val(new_str_key);
947 b->key = new_str_key;
948 }
949 } ZEND_HASH_FOREACH_END();
950 zend_hash_rehash(&phar->mounted_dirs);
951 }
952
953 if (is_modified) {
954 phar_flush(phar, 0, 0, 0, &error);
955 if (error) {
956 php_url_free(resource_from);
957 php_url_free(resource_to);
958 php_error_docref(NULL, E_WARNING, "phar error: cannot rename \"%s\" to \"%s\": %s", url_from, url_to, error);
959 efree(error);
960 return 0;
961 }
962 }
963
964 php_url_free(resource_from);
965 php_url_free(resource_to);
966
967 return 1;
968 }
969 /* }}} */
970
971 /*
972 * Local variables:
973 * tab-width: 4
974 * c-basic-offset: 4
975 * End:
976 * vim600: noet sw=4 ts=4 fdm=marker
977 * vim<600: noet sw=4 ts=4
978 */
979
