This source file includes following definitions.
- finfo_objects_free
- finfo_objects_new
- finfo_resource_destructor
- PHP_MINIT_FUNCTION
- ZEND_GET_MODULE
- PHP_FUNCTION
- PHP_FUNCTION
- PHP_FUNCTION
- _php_finfo_get_type
- PHP_FUNCTION
- PHP_FUNCTION
- PHP_FUNCTION
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21 #ifdef HAVE_CONFIG_H
22 #include "config.h"
23 #endif
24 #include "php.h"
25
26 #include <magic.h>
27
28
29
30
31 #ifndef HOWMANY
32 #define HOWMANY 65536
33 #endif
34
35 #include "php_ini.h"
36 #include "ext/standard/info.h"
37 #include "ext/standard/file.h"
38 #include "php_fileinfo.h"
39 #include "fopen_wrappers.h"
40
41 #ifndef _S_IFDIR
42 # define _S_IFDIR S_IFDIR
43 #endif
44
45
46 struct php_fileinfo {
47 long options;
48 struct magic_set *magic;
49 };
50
51 static zend_object_handlers finfo_object_handlers;
52 zend_class_entry *finfo_class_entry;
53
54 struct finfo_object {
55 zend_object zo;
56 struct php_fileinfo *ptr;
57 };
58
59 #define FILEINFO_DECLARE_INIT_OBJECT(object) \
60 zval *object = getThis();
61
62 #define FILEINFO_REGISTER_OBJECT(_object, _ptr) \
63 { \
64 struct finfo_object *obj; \
65 obj = (struct finfo_object*)zend_object_store_get_object(_object TSRMLS_CC); \
66 obj->ptr = _ptr; \
67 }
68
69 #define FILEINFO_FROM_OBJECT(finfo, object) \
70 { \
71 struct finfo_object *obj = zend_object_store_get_object(object TSRMLS_CC); \
72 finfo = obj->ptr; \
73 if (!finfo) { \
74 php_error_docref(NULL TSRMLS_CC, E_WARNING, "The invalid fileinfo object."); \
75 RETURN_FALSE; \
76 } \
77 }
78
79
80
81 static void finfo_objects_free(void *object TSRMLS_DC)
82 {
83 struct finfo_object *intern = (struct finfo_object *) object;
84
85 if (intern->ptr) {
86 magic_close(intern->ptr->magic);
87 efree(intern->ptr);
88 }
89
90 zend_object_std_dtor(&intern->zo TSRMLS_CC);
91 efree(intern);
92 }
93
94
95
96
97 PHP_FILEINFO_API zend_object_value finfo_objects_new(zend_class_entry *class_type TSRMLS_DC)
98 {
99 zend_object_value retval;
100 struct finfo_object *intern;
101
102 intern = emalloc(sizeof(struct finfo_object));
103 memset(intern, 0, sizeof(struct finfo_object));
104
105 zend_object_std_init(&intern->zo, class_type TSRMLS_CC);
106 object_properties_init(&intern->zo, class_type);
107
108 intern->ptr = NULL;
109
110 retval.handle = zend_objects_store_put(intern, NULL,
111 finfo_objects_free, NULL TSRMLS_CC);
112 retval.handlers = (zend_object_handlers *) &finfo_object_handlers;
113
114 return retval;
115 }
116
117
118
119 ZEND_BEGIN_ARG_INFO_EX(arginfo_finfo_open, 0, 0, 0)
120 ZEND_ARG_INFO(0, options)
121 ZEND_ARG_INFO(0, arg)
122 ZEND_END_ARG_INFO()
123
124 ZEND_BEGIN_ARG_INFO_EX(arginfo_finfo_close, 0, 0, 1)
125 ZEND_ARG_INFO(0, finfo)
126 ZEND_END_ARG_INFO()
127
128 ZEND_BEGIN_ARG_INFO_EX(arginfo_finfo_set_flags, 0, 0, 2)
129 ZEND_ARG_INFO(0, finfo)
130 ZEND_ARG_INFO(0, options)
131 ZEND_END_ARG_INFO()
132
133 ZEND_BEGIN_ARG_INFO_EX(arginfo_finfo_method_set_flags, 0, 0, 1)
134 ZEND_ARG_INFO(0, options)
135 ZEND_END_ARG_INFO()
136
137 ZEND_BEGIN_ARG_INFO_EX(arginfo_finfo_file, 0, 0, 2)
138 ZEND_ARG_INFO(0, finfo)
139 ZEND_ARG_INFO(0, filename)
140 ZEND_ARG_INFO(0, options)
141 ZEND_ARG_INFO(0, context)
142 ZEND_END_ARG_INFO()
143
144 ZEND_BEGIN_ARG_INFO_EX(arginfo_finfo_method_file, 0, 0, 1)
145 ZEND_ARG_INFO(0, filename)
146 ZEND_ARG_INFO(0, options)
147 ZEND_ARG_INFO(0, context)
148 ZEND_END_ARG_INFO()
149
150 ZEND_BEGIN_ARG_INFO_EX(arginfo_finfo_buffer, 0, 0, 2)
151 ZEND_ARG_INFO(0, finfo)
152 ZEND_ARG_INFO(0, string)
153 ZEND_ARG_INFO(0, options)
154 ZEND_ARG_INFO(0, context)
155 ZEND_END_ARG_INFO()
156
157 ZEND_BEGIN_ARG_INFO_EX(arginfo_finfo_method_buffer, 0, 0, 1)
158 ZEND_ARG_INFO(0, string)
159 ZEND_ARG_INFO(0, options)
160 ZEND_ARG_INFO(0, context)
161 ZEND_END_ARG_INFO()
162
163 ZEND_BEGIN_ARG_INFO_EX(arginfo_mime_content_type, 0, 0, 1)
164 ZEND_ARG_INFO(0, string)
165 ZEND_END_ARG_INFO()
166
167
168
169
170 zend_function_entry finfo_class_functions[] = {
171 ZEND_ME_MAPPING(finfo, finfo_open, arginfo_finfo_open, ZEND_ACC_PUBLIC)
172 ZEND_ME_MAPPING(set_flags, finfo_set_flags,arginfo_finfo_method_set_flags, ZEND_ACC_PUBLIC)
173 ZEND_ME_MAPPING(file, finfo_file, arginfo_finfo_method_file, ZEND_ACC_PUBLIC)
174 ZEND_ME_MAPPING(buffer, finfo_buffer, arginfo_finfo_method_buffer, ZEND_ACC_PUBLIC)
175 PHP_FE_END
176 };
177
178
179 #define FINFO_SET_OPTION(magic, options) \
180 if (magic_setflags(magic, options) == -1) { \
181 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to set option '%ld' %d:%s", \
182 options, magic_errno(magic), magic_error(magic)); \
183 RETURN_FALSE; \
184 }
185
186
187 static int le_fileinfo;
188
189
190 void finfo_resource_destructor(zend_rsrc_list_entry *rsrc TSRMLS_DC)
191 {
192 if (rsrc->ptr) {
193 struct php_fileinfo *finfo = (struct php_fileinfo *) rsrc->ptr;
194 magic_close(finfo->magic);
195 efree(rsrc->ptr);
196 rsrc->ptr = NULL;
197 }
198 }
199
200
201
202
203
204 zend_function_entry fileinfo_functions[] = {
205 PHP_FE(finfo_open, arginfo_finfo_open)
206 PHP_FE(finfo_close, arginfo_finfo_close)
207 PHP_FE(finfo_set_flags, arginfo_finfo_set_flags)
208 PHP_FE(finfo_file, arginfo_finfo_file)
209 PHP_FE(finfo_buffer, arginfo_finfo_buffer)
210 PHP_FE(mime_content_type, arginfo_mime_content_type)
211 {NULL, NULL, NULL}
212 };
213
214
215
216
217 PHP_MINIT_FUNCTION(finfo)
218 {
219 zend_class_entry _finfo_class_entry;
220 INIT_CLASS_ENTRY(_finfo_class_entry, "finfo", finfo_class_functions);
221 _finfo_class_entry.create_object = finfo_objects_new;
222 finfo_class_entry = zend_register_internal_class(&_finfo_class_entry TSRMLS_CC);
223
224
225 memcpy(&finfo_object_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers));
226
227 le_fileinfo = zend_register_list_destructors_ex(finfo_resource_destructor, NULL, "file_info", module_number);
228
229 REGISTER_LONG_CONSTANT("FILEINFO_NONE", MAGIC_NONE, CONST_CS|CONST_PERSISTENT);
230 REGISTER_LONG_CONSTANT("FILEINFO_SYMLINK", MAGIC_SYMLINK, CONST_CS|CONST_PERSISTENT);
231 REGISTER_LONG_CONSTANT("FILEINFO_MIME", MAGIC_MIME, CONST_CS|CONST_PERSISTENT);
232 REGISTER_LONG_CONSTANT("FILEINFO_MIME_TYPE", MAGIC_MIME_TYPE, CONST_CS|CONST_PERSISTENT);
233 REGISTER_LONG_CONSTANT("FILEINFO_MIME_ENCODING",MAGIC_MIME_ENCODING, CONST_CS|CONST_PERSISTENT);
234
235 REGISTER_LONG_CONSTANT("FILEINFO_DEVICES", MAGIC_DEVICES, CONST_CS|CONST_PERSISTENT);
236 REGISTER_LONG_CONSTANT("FILEINFO_CONTINUE", MAGIC_CONTINUE, CONST_CS|CONST_PERSISTENT);
237 #ifdef MAGIC_PRESERVE_ATIME
238 REGISTER_LONG_CONSTANT("FILEINFO_PRESERVE_ATIME", MAGIC_PRESERVE_ATIME, CONST_CS|CONST_PERSISTENT);
239 #endif
240 #ifdef MAGIC_RAW
241 REGISTER_LONG_CONSTANT("FILEINFO_RAW", MAGIC_RAW, CONST_CS|CONST_PERSISTENT);
242 #endif
243
244 return SUCCESS;
245 }
246
247
248
249
250 zend_module_entry fileinfo_module_entry = {
251 STANDARD_MODULE_HEADER,
252 "fileinfo",
253 fileinfo_functions,
254 PHP_MINIT(finfo),
255 NULL,
256 NULL,
257 NULL,
258 PHP_MINFO(fileinfo),
259 PHP_FILEINFO_VERSION,
260 STANDARD_MODULE_PROPERTIES
261 };
262
263
264 #ifdef COMPILE_DL_FILEINFO
265 ZEND_GET_MODULE(fileinfo)
266 #endif
267
268
269
270 PHP_MINFO_FUNCTION(fileinfo)
271 {
272 char magic_ver[5];
273
274 (void)snprintf(magic_ver, 4, "%d", magic_version());
275 magic_ver[4] = '\0';
276
277 php_info_print_table_start();
278 php_info_print_table_row(2, "fileinfo support", "enabled");
279 php_info_print_table_row(2, "version", PHP_FILEINFO_VERSION);
280 php_info_print_table_row(2, "libmagic", magic_ver);
281 php_info_print_table_end();
282 }
283
284
285 #define FILEINFO_DESTROY_OBJECT(object) \
286 do { \
287 if (object) { \
288 zend_object_store_ctor_failed(object TSRMLS_CC); \
289 zval_dtor(object); \
290 ZVAL_NULL(object); \
291 } \
292 } while (0)
293
294
295
296 PHP_FUNCTION(finfo_open)
297 {
298 long options = MAGIC_NONE;
299 char *file = NULL;
300 int file_len = 0;
301 struct php_fileinfo *finfo;
302 FILEINFO_DECLARE_INIT_OBJECT(object)
303 char resolved_path[MAXPATHLEN];
304
305 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|lp", &options, &file, &file_len) == FAILURE) {
306 FILEINFO_DESTROY_OBJECT(object);
307 RETURN_FALSE;
308 }
309
310 if (object) {
311 struct finfo_object *finfo_obj = (struct finfo_object*)zend_object_store_get_object(object TSRMLS_CC);
312
313 if (finfo_obj->ptr) {
314 magic_close(finfo_obj->ptr->magic);
315 efree(finfo_obj->ptr);
316 finfo_obj->ptr = NULL;
317 }
318 }
319
320 if (file_len == 0) {
321 file = NULL;
322 } else if (file && *file) {
323
324 if (php_check_open_basedir(file TSRMLS_CC)) {
325 FILEINFO_DESTROY_OBJECT(object);
326 RETURN_FALSE;
327 }
328 if (!expand_filepath_with_mode(file, resolved_path, NULL, 0, CWD_EXPAND TSRMLS_CC)) {
329 FILEINFO_DESTROY_OBJECT(object);
330 RETURN_FALSE;
331 }
332 file = resolved_path;
333 }
334
335 finfo = emalloc(sizeof(struct php_fileinfo));
336
337 finfo->options = options;
338 finfo->magic = magic_open(options);
339
340 if (finfo->magic == NULL) {
341 efree(finfo);
342 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid mode '%ld'.", options);
343 FILEINFO_DESTROY_OBJECT(object);
344 RETURN_FALSE;
345 }
346
347 if (magic_load(finfo->magic, file) == -1) {
348 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to load magic database at '%s'.", file);
349 magic_close(finfo->magic);
350 efree(finfo);
351 FILEINFO_DESTROY_OBJECT(object);
352 RETURN_FALSE;
353 }
354
355 if (object) {
356 FILEINFO_REGISTER_OBJECT(object, finfo);
357 } else {
358 ZEND_REGISTER_RESOURCE(return_value, finfo, le_fileinfo);
359 }
360 }
361
362
363
364
365 PHP_FUNCTION(finfo_close)
366 {
367 struct php_fileinfo *finfo;
368 zval *zfinfo;
369
370 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &zfinfo) == FAILURE) {
371 RETURN_FALSE;
372 }
373 ZEND_FETCH_RESOURCE(finfo, struct php_fileinfo *, &zfinfo, -1, "file_info", le_fileinfo);
374
375 zend_list_delete(Z_RESVAL_P(zfinfo));
376
377 RETURN_TRUE;
378 }
379
380
381
382
383 PHP_FUNCTION(finfo_set_flags)
384 {
385 long options;
386 struct php_fileinfo *finfo;
387 zval *zfinfo;
388 FILEINFO_DECLARE_INIT_OBJECT(object)
389
390 if (object) {
391 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &options) == FAILURE) {
392 RETURN_FALSE;
393 }
394 FILEINFO_FROM_OBJECT(finfo, object);
395 } else {
396 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rl", &zfinfo, &options) == FAILURE) {
397 RETURN_FALSE;
398 }
399 ZEND_FETCH_RESOURCE(finfo, struct php_fileinfo *, &zfinfo, -1, "file_info", le_fileinfo);
400 }
401
402 FINFO_SET_OPTION(finfo->magic, options)
403 finfo->options = options;
404
405 RETURN_TRUE;
406 }
407
408
409 #define FILEINFO_MODE_BUFFER 0
410 #define FILEINFO_MODE_STREAM 1
411 #define FILEINFO_MODE_FILE 2
412
413 static void _php_finfo_get_type(INTERNAL_FUNCTION_PARAMETERS, int mode, int mimetype_emu)
414 {
415 long options = 0;
416 char *ret_val = NULL, *buffer = NULL;
417 int buffer_len;
418 struct php_fileinfo *finfo = NULL;
419 zval *zfinfo, *zcontext = NULL;
420 zval *what;
421 char mime_directory[] = "directory";
422
423 struct magic_set *magic = NULL;
424 FILEINFO_DECLARE_INIT_OBJECT(object)
425
426 if (mimetype_emu) {
427
428
429 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &what) == FAILURE) {
430 return;
431 }
432
433 switch (Z_TYPE_P(what)) {
434 case IS_STRING:
435 buffer = Z_STRVAL_P(what);
436 buffer_len = Z_STRLEN_P(what);
437 mode = FILEINFO_MODE_FILE;
438 break;
439
440 case IS_RESOURCE:
441 mode = FILEINFO_MODE_STREAM;
442 break;
443
444 default:
445 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Can only process string or stream arguments");
446 RETURN_FALSE;
447 }
448
449 magic = magic_open(MAGIC_MIME_TYPE);
450 if (magic_load(magic, NULL) == -1) {
451 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to load magic database.");
452 goto common;
453 }
454 } else if (object) {
455 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|lr", &buffer, &buffer_len, &options, &zcontext) == FAILURE) {
456 RETURN_FALSE;
457 }
458 FILEINFO_FROM_OBJECT(finfo, object);
459 magic = finfo->magic;
460 } else {
461 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rs|lr", &zfinfo, &buffer, &buffer_len, &options, &zcontext) == FAILURE) {
462 RETURN_FALSE;
463 }
464 ZEND_FETCH_RESOURCE(finfo, struct php_fileinfo *, &zfinfo, -1, "file_info", le_fileinfo);
465 magic = finfo->magic;
466 }
467
468
469 if (options) {
470 FINFO_SET_OPTION(magic, options)
471 }
472
473 switch (mode) {
474 case FILEINFO_MODE_BUFFER:
475 {
476 ret_val = (char *) magic_buffer(magic, buffer, buffer_len);
477 break;
478 }
479
480 case FILEINFO_MODE_STREAM:
481 {
482 php_stream *stream;
483 off_t streampos;
484
485 php_stream_from_zval_no_verify(stream, &what);
486 if (!stream) {
487 goto common;
488 }
489
490 streampos = php_stream_tell(stream);
491 php_stream_seek(stream, 0, SEEK_SET);
492
493 ret_val = (char *) magic_stream(magic, stream);
494
495 php_stream_seek(stream, streampos, SEEK_SET);
496 break;
497 }
498
499 case FILEINFO_MODE_FILE:
500 {
501
502 const char *tmp2;
503 php_stream_wrapper *wrap;
504 php_stream_statbuf ssb;
505
506 if (buffer == NULL || !*buffer) {
507 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Empty filename or path");
508 RETVAL_FALSE;
509 goto clean;
510 }
511 if (CHECK_NULL_PATH(buffer, buffer_len)) {
512 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid path");
513 RETVAL_FALSE;
514 goto clean;
515 }
516
517 wrap = php_stream_locate_url_wrapper(buffer, &tmp2, 0 TSRMLS_CC);
518
519 if (wrap) {
520 php_stream *stream;
521 php_stream_context *context = php_stream_context_from_zval(zcontext, 0);
522
523 #ifdef PHP_WIN32
524 if (php_stream_stat_path_ex(buffer, 0, &ssb, context) == SUCCESS) {
525 if (ssb.sb.st_mode & S_IFDIR) {
526 ret_val = mime_directory;
527 goto common;
528 }
529 }
530 #endif
531
532 #if PHP_API_VERSION < 20100412
533 stream = php_stream_open_wrapper_ex(buffer, "rb", ENFORCE_SAFE_MODE | REPORT_ERRORS, NULL, context);
534 #else
535 stream = php_stream_open_wrapper_ex(buffer, "rb", REPORT_ERRORS, NULL, context);
536 #endif
537
538 if (!stream) {
539 RETVAL_FALSE;
540 goto clean;
541 }
542
543 if (php_stream_stat(stream, &ssb) == SUCCESS) {
544 if (ssb.sb.st_mode & S_IFDIR) {
545 ret_val = mime_directory;
546 } else {
547 ret_val = (char *)magic_stream(magic, stream);
548 }
549 }
550
551 php_stream_close(stream);
552 }
553 break;
554 }
555
556 default:
557 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Can only process string or stream arguments");
558 }
559
560 common:
561 if (ret_val) {
562 RETVAL_STRING(ret_val, 1);
563 } else {
564 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed identify data %d:%s", magic_errno(magic), magic_error(magic));
565 RETVAL_FALSE;
566 }
567
568 clean:
569 if (mimetype_emu) {
570 magic_close(magic);
571 }
572
573
574 if (options) {
575 FINFO_SET_OPTION(magic, finfo->options)
576 }
577 return;
578 }
579
580
581
582
583 PHP_FUNCTION(finfo_file)
584 {
585 _php_finfo_get_type(INTERNAL_FUNCTION_PARAM_PASSTHRU, FILEINFO_MODE_FILE, 0);
586 }
587
588
589
590
591 PHP_FUNCTION(finfo_buffer)
592 {
593 _php_finfo_get_type(INTERNAL_FUNCTION_PARAM_PASSTHRU, FILEINFO_MODE_BUFFER, 0);
594 }
595
596
597
598
599 PHP_FUNCTION(mime_content_type)
600 {
601 _php_finfo_get_type(INTERNAL_FUNCTION_PARAM_PASSTHRU, -1, 1);
602 }
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