mirrored from git://git.moodle.org/moodle.git
/
stored_file.php
1053 lines (955 loc) · 35.3 KB
/
stored_file.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Definition of a class stored_file.
*
* @package core_files
* @copyright 2008 Petr Skoda {@link http://skodak.org}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
require_once($CFG->dirroot . '/lib/filestorage/file_progress.php');
/**
* Class representing local files stored in a sha1 file pool.
*
* Since Moodle 2.0 file contents are stored in sha1 pool and
* all other file information is stored in new "files" database table.
*
* @package core_files
* @category files
* @copyright 2008 Petr Skoda {@link http://skodak.org}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
*/
class stored_file {
/** @var file_storage file storage pool instance */
private $fs;
/** @var stdClass record from the files table left join files_reference table */
private $file_record;
/** @var string location of content files */
private $filedir;
/** @var repository repository plugin instance */
private $repository;
/**
* @var int Indicates a file handle of the type returned by fopen.
*/
const FILE_HANDLE_FOPEN = 0;
/**
* @var int Indicates a file handle of the type returned by gzopen.
*/
const FILE_HANDLE_GZOPEN = 1;
/**
* Constructor, this constructor should be called ONLY from the file_storage class!
*
* @param file_storage $fs file storage instance
* @param stdClass $file_record description of file
* @param string $filedir location of file directory with sh1 named content files
*/
public function __construct(file_storage $fs, stdClass $file_record, $filedir) {
global $DB, $CFG;
$this->fs = $fs;
$this->file_record = clone($file_record); // prevent modifications
$this->filedir = $filedir; // keep secret, do not expose!
if (!empty($file_record->repositoryid)) {
require_once("$CFG->dirroot/repository/lib.php");
$this->repository = repository::get_repository_by_id($file_record->repositoryid, SYSCONTEXTID);
if ($this->repository->supported_returntypes() & FILE_REFERENCE != FILE_REFERENCE) {
// Repository cannot do file reference.
throw new moodle_exception('error');
}
} else {
$this->repository = null;
}
// make sure all reference fields exist in file_record even when it is not a reference
foreach (array('referencelastsync', 'referencefileid', 'reference', 'repositoryid') as $key) {
if (empty($this->file_record->$key)) {
$this->file_record->$key = null;
}
}
}
/**
* Whether or not this is a external resource
*
* @return bool
*/
public function is_external_file() {
return !empty($this->repository);
}
/**
* Update some file record fields
* NOTE: Must remain protected
*
* @param stdClass $dataobject
*/
protected function update($dataobject) {
global $DB;
$updatereferencesneeded = false;
$keys = array_keys((array)$this->file_record);
foreach ($dataobject as $field => $value) {
if (in_array($field, $keys)) {
if ($field == 'contextid' and (!is_number($value) or $value < 1)) {
throw new file_exception('storedfileproblem', 'Invalid contextid');
}
if ($field == 'component') {
$value = clean_param($value, PARAM_COMPONENT);
if (empty($value)) {
throw new file_exception('storedfileproblem', 'Invalid component');
}
}
if ($field == 'filearea') {
$value = clean_param($value, PARAM_AREA);
if (empty($value)) {
throw new file_exception('storedfileproblem', 'Invalid filearea');
}
}
if ($field == 'itemid' and (!is_number($value) or $value < 0)) {
throw new file_exception('storedfileproblem', 'Invalid itemid');
}
if ($field == 'filepath') {
$value = clean_param($value, PARAM_PATH);
if (strpos($value, '/') !== 0 or strrpos($value, '/') !== strlen($value)-1) {
// path must start and end with '/'
throw new file_exception('storedfileproblem', 'Invalid file path');
}
}
if ($field == 'filename') {
// folder has filename == '.', so we pass this
if ($value != '.') {
$value = clean_param($value, PARAM_FILE);
}
if ($value === '') {
throw new file_exception('storedfileproblem', 'Invalid file name');
}
}
if ($field === 'timecreated' or $field === 'timemodified') {
if (!is_number($value)) {
throw new file_exception('storedfileproblem', 'Invalid timestamp');
}
if ($value < 0) {
$value = 0;
}
}
if ($field === 'referencefileid') {
if (!is_null($value) and !is_number($value)) {
throw new file_exception('storedfileproblem', 'Invalid reference info');
}
}
if (($field == 'contenthash' || $field == 'filesize') && $this->file_record->$field != $value) {
$updatereferencesneeded = true;
}
// adding the field
$this->file_record->$field = $value;
} else {
throw new coding_exception("Invalid field name, $field doesn't exist in file record");
}
}
// Validate mimetype field
// we don't use {@link stored_file::get_content_file_location()} here becaues it will try to update file_record
$pathname = $this->get_pathname_by_contenthash();
// try to recover the content from trash
if (!is_readable($pathname)) {
if (!$this->fs->try_content_recovery($this) or !is_readable($pathname)) {
throw new file_exception('storedfilecannotread', '', $pathname);
}
}
$mimetype = $this->fs->mimetype($pathname, $this->file_record->filename);
$this->file_record->mimetype = $mimetype;
$DB->update_record('files', $this->file_record);
if ($updatereferencesneeded) {
// Either filesize or contenthash of this file have changed. Update all files that reference to it.
$this->fs->update_references_to_storedfile($this);
}
}
/**
* Rename filename
*
* @param string $filepath file path
* @param string $filename file name
*/
public function rename($filepath, $filename) {
if ($this->fs->file_exists($this->get_contextid(), $this->get_component(), $this->get_filearea(), $this->get_itemid(), $filepath, $filename)) {
$a = new stdClass();
$a->contextid = $this->get_contextid();
$a->component = $this->get_component();
$a->filearea = $this->get_filearea();
$a->itemid = $this->get_itemid();
$a->filepath = $filepath;
$a->filename = $filename;
throw new file_exception('storedfilenotcreated', $a, 'file exists, cannot rename');
}
$filerecord = new stdClass;
$filerecord->filepath = $filepath;
$filerecord->filename = $filename;
// populate the pathname hash
$filerecord->pathnamehash = $this->fs->get_pathname_hash($this->file_record->contextid, $this->file_record->component, $this->file_record->filearea, $this->file_record->itemid, $filepath, $filename);
$this->update($filerecord);
}
/**
* Replace the content by providing another stored_file instance
*
* @deprecated since 2.6
* @see stored_file::replace_file_with()
* @param stored_file $storedfile
*/
public function replace_content_with(stored_file $storedfile) {
debugging('Function stored_file::replace_content_with() is deprecated. Please use stored_file::replace_file_with()', DEBUG_DEVELOPER);
$filerecord = new stdClass;
$contenthash = $storedfile->get_contenthash();
if ($this->fs->content_exists($contenthash)) {
$filerecord->contenthash = $contenthash;
} else {
throw new file_exception('storedfileproblem', 'Invalid contenthash, content must be already in filepool', $contenthash);
}
$filerecord->filesize = $storedfile->get_filesize();
$this->update($filerecord);
}
/**
* Replaces the fields that might have changed when file was overriden in filepicker:
* reference, contenthash, filesize, userid
*
* Note that field 'source' must be updated separately because
* it has different format for draft and non-draft areas and
* this function will usually be used to replace non-draft area
* file with draft area file.
*
* @param stored_file $newfile
* @throws coding_exception
*/
public function replace_file_with(stored_file $newfile) {
if ($newfile->get_referencefileid() &&
$this->fs->get_references_count_by_storedfile($this)) {
// The new file is a reference.
// The current file has other local files referencing to it.
// Double reference is not allowed.
throw new moodle_exception('errordoublereference', 'repository');
}
$filerecord = new stdClass;
$contenthash = $newfile->get_contenthash();
if ($this->fs->content_exists($contenthash)) {
$filerecord->contenthash = $contenthash;
} else {
throw new file_exception('storedfileproblem', 'Invalid contenthash, content must be already in filepool', $contenthash);
}
$filerecord->filesize = $newfile->get_filesize();
$filerecord->referencefileid = $newfile->get_referencefileid();
$filerecord->userid = $newfile->get_userid();
$this->update($filerecord);
}
/**
* Unlink the stored file from the referenced file
*
* This methods destroys the link to the record in files_reference table. This effectively
* turns the stored file from being an alias to a plain copy. However, the caller has
* to make sure that the actual file's content has beed synced prior to calling this method.
*/
public function delete_reference() {
global $DB;
if (!$this->is_external_file()) {
throw new coding_exception('An attempt to unlink a non-reference file.');
}
$transaction = $DB->start_delegated_transaction();
// Are we the only one referring to the original file? If so, delete the
// referenced file record. Note we do not use file_storage::search_references_count()
// here because we want to count draft files too and we are at a bit lower access level here.
$countlinks = $DB->count_records('files',
array('referencefileid' => $this->file_record->referencefileid));
if ($countlinks == 1) {
$DB->delete_records('files_reference', array('id' => $this->file_record->referencefileid));
}
// Update the underlying record in the database.
$update = new stdClass();
$update->referencefileid = null;
$this->update($update);
$transaction->allow_commit();
// Update our properties and the record in the memory.
$this->repository = null;
$this->file_record->repositoryid = null;
$this->file_record->reference = null;
$this->file_record->referencefileid = null;
$this->file_record->referencelastsync = null;
}
/**
* Is this a directory?
*
* Directories are only emulated, internally they are stored as empty
* files with a "." instead of name - this means empty directory contains
* exactly one empty file with name dot.
*
* @return bool true means directory, false means file
*/
public function is_directory() {
return ($this->file_record->filename === '.');
}
/**
* Delete file from files table.
*
* The content of files stored in sha1 pool is reclaimed
* later - the occupied disk space is reclaimed much later.
*
* @return bool always true or exception if error occurred
*/
public function delete() {
global $DB;
if ($this->is_directory()) {
// Directories can not be referenced, just delete the record.
$DB->delete_records('files', array('id'=>$this->file_record->id));
} else {
$transaction = $DB->start_delegated_transaction();
// If there are other files referring to this file, convert them to copies.
if ($files = $this->fs->get_references_by_storedfile($this)) {
foreach ($files as $file) {
$this->fs->import_external_file($file);
}
}
// If this file is a reference (alias) to another file, unlink it first.
if ($this->is_external_file()) {
$this->delete_reference();
}
// Now delete the file record.
$DB->delete_records('files', array('id'=>$this->file_record->id));
$transaction->allow_commit();
}
// Move pool file to trash if content not needed any more.
$this->fs->deleted_file_cleanup($this->file_record->contenthash);
return true; // BC only
}
/**
* Get file pathname by contenthash
*
* NOTE, this function is not calling sync_external_file, it assume the contenthash is current
* Protected - developers must not gain direct access to this function.
*
* @return string full path to pool file with file content
*/
protected function get_pathname_by_contenthash() {
// Detect is local file or not.
$contenthash = $this->file_record->contenthash;
$l1 = $contenthash[0].$contenthash[1];
$l2 = $contenthash[2].$contenthash[3];
return "$this->filedir/$l1/$l2/$contenthash";
}
/**
* Get file pathname by given contenthash, this method will try to sync files
*
* Protected - developers must not gain direct access to this function.
*
* NOTE: do not make this public, we must not modify or delete the pool files directly! ;-)
*
* @return string full path to pool file with file content
**/
protected function get_content_file_location() {
$this->sync_external_file();
return $this->get_pathname_by_contenthash();
}
/**
* adds this file path to a curl request (POST only)
*
* @param curl $curlrequest the curl request object
* @param string $key what key to use in the POST request
* @return void
*/
public function add_to_curl_request(&$curlrequest, $key) {
if (function_exists('curl_file_create')) {
// As of PHP 5.5, the usage of the @filename API for file uploading is deprecated.
$value = curl_file_create($this->get_content_file_location());
} else {
$value = '@' . $this->get_content_file_location();
}
$curlrequest->_tmp_file_post_params[$key] = $value;
}
/**
* Returns file handle - read only mode, no writing allowed into pool files!
*
* When you want to modify a file, create a new file and delete the old one.
*
* @param int $type Type of file handle (FILE_HANDLE_xx constant)
* @return resource file handle
*/
public function get_content_file_handle($type = self::FILE_HANDLE_FOPEN) {
$path = $this->get_content_file_location();
if (!is_readable($path)) {
if (!$this->fs->try_content_recovery($this) or !is_readable($path)) {
throw new file_exception('storedfilecannotread', '', $path);
}
}
switch ($type) {
case self::FILE_HANDLE_FOPEN:
// Binary reading.
return fopen($path, 'rb');
case self::FILE_HANDLE_GZOPEN:
// Binary reading of file in gz format.
return gzopen($path, 'rb');
default:
throw new coding_exception('Unexpected file handle type');
}
}
/**
* Dumps file content to page.
*/
public function readfile() {
$path = $this->get_content_file_location();
if (!is_readable($path)) {
if (!$this->fs->try_content_recovery($this) or !is_readable($path)) {
throw new file_exception('storedfilecannotread', '', $path);
}
}
readfile_allow_large($path, $this->get_filesize());
}
/**
* Returns file content as string.
*
* @return string content
*/
public function get_content() {
$path = $this->get_content_file_location();
if (!is_readable($path)) {
if (!$this->fs->try_content_recovery($this) or !is_readable($path)) {
throw new file_exception('storedfilecannotread', '', $path);
}
}
return file_get_contents($this->get_content_file_location());
}
/**
* Copy content of file to given pathname.
*
* @param string $pathname real path to the new file
* @return bool success
*/
public function copy_content_to($pathname) {
$path = $this->get_content_file_location();
if (!is_readable($path)) {
if (!$this->fs->try_content_recovery($this) or !is_readable($path)) {
throw new file_exception('storedfilecannotread', '', $path);
}
}
return copy($path, $pathname);
}
/**
* Copy content of file to temporary folder and returns file path
*
* @param string $dir name of the temporary directory
* @param string $fileprefix prefix of temporary file.
* @return string|bool path of temporary file or false.
*/
public function copy_content_to_temp($dir = 'files', $fileprefix = 'tempup_') {
$tempfile = false;
if (!$dir = make_temp_directory($dir)) {
return false;
}
if (!$tempfile = tempnam($dir, $fileprefix)) {
return false;
}
if (!$this->copy_content_to($tempfile)) {
// something went wrong
@unlink($tempfile);
return false;
}
return $tempfile;
}
/**
* List contents of archive.
*
* @param file_packer $packer file packer instance
* @return array of file infos
*/
public function list_files(file_packer $packer) {
$archivefile = $this->get_content_file_location();
return $packer->list_files($archivefile);
}
/**
* Extract file to given file path (real OS filesystem), existing files are overwritten.
*
* @param file_packer $packer file packer instance
* @param string $pathname target directory
* @param file_progress $progress Progress indicator callback or null if not required
* @return array|bool list of processed files; false if error
*/
public function extract_to_pathname(file_packer $packer, $pathname,
file_progress $progress = null) {
$archivefile = $this->get_content_file_location();
return $packer->extract_to_pathname($archivefile, $pathname, null, $progress);
}
/**
* Extract file to given file path (real OS filesystem), existing files are overwritten.
*
* @param file_packer $packer file packer instance
* @param int $contextid context ID
* @param string $component component
* @param string $filearea file area
* @param int $itemid item ID
* @param string $pathbase path base
* @param int $userid user ID
* @param file_progress $progress Progress indicator callback or null if not required
* @return array|bool list of processed files; false if error
*/
public function extract_to_storage(file_packer $packer, $contextid,
$component, $filearea, $itemid, $pathbase, $userid = null, file_progress $progress = null) {
$archivefile = $this->get_content_file_location();
return $packer->extract_to_storage($archivefile, $contextid,
$component, $filearea, $itemid, $pathbase, $userid, $progress);
}
/**
* Add file/directory into archive.
*
* @param file_archive $filearch file archive instance
* @param string $archivepath pathname in archive
* @return bool success
*/
public function archive_file(file_archive $filearch, $archivepath) {
if ($this->is_directory()) {
return $filearch->add_directory($archivepath);
} else {
$path = $this->get_content_file_location();
if (!is_readable($path)) {
return false;
}
return $filearch->add_file_from_pathname($archivepath, $path);
}
}
/**
* Returns information about image,
* information is determined from the file content
*
* @return mixed array with width, height and mimetype; false if not an image
*/
public function get_imageinfo() {
$path = $this->get_content_file_location();
if (!is_readable($path)) {
if (!$this->fs->try_content_recovery($this) or !is_readable($path)) {
throw new file_exception('storedfilecannotread', '', $path);
}
}
$mimetype = $this->get_mimetype();
if (!preg_match('|^image/|', $mimetype) || !filesize($path) || !($imageinfo = getimagesize($path))) {
return false;
}
$image = array('width'=>$imageinfo[0], 'height'=>$imageinfo[1], 'mimetype'=>image_type_to_mime_type($imageinfo[2]));
if (empty($image['width']) or empty($image['height']) or empty($image['mimetype'])) {
// gd can not parse it, sorry
return false;
}
return $image;
}
/**
* Verifies the file is a valid web image - gif, png and jpeg only.
*
* It should be ok to serve this image from server without any other security workarounds.
*
* @return bool true if file ok
*/
public function is_valid_image() {
$mimetype = $this->get_mimetype();
if (!file_mimetype_in_typegroup($mimetype, 'web_image')) {
return false;
}
if (!$info = $this->get_imageinfo()) {
return false;
}
if ($info['mimetype'] !== $mimetype) {
return false;
}
// ok, GD likes this image
return true;
}
/**
* Returns parent directory, creates missing parents if needed.
*
* @return stored_file
*/
public function get_parent_directory() {
if ($this->file_record->filepath === '/' and $this->file_record->filename === '.') {
//root dir does not have parent
return null;
}
if ($this->file_record->filename !== '.') {
return $this->fs->create_directory($this->file_record->contextid, $this->file_record->component, $this->file_record->filearea, $this->file_record->itemid, $this->file_record->filepath);
}
$filepath = $this->file_record->filepath;
$filepath = trim($filepath, '/');
$dirs = explode('/', $filepath);
array_pop($dirs);
$filepath = implode('/', $dirs);
$filepath = ($filepath === '') ? '/' : "/$filepath/";
return $this->fs->create_directory($this->file_record->contextid, $this->file_record->component, $this->file_record->filearea, $this->file_record->itemid, $filepath);
}
/**
* Synchronize file if it is a reference and needs synchronizing
*
* Updates contenthash and filesize
*/
public function sync_external_file() {
if (!empty($this->repository)) {
$this->repository->sync_reference($this);
}
}
/**
* Returns context id of the file
*
* @return int context id
*/
public function get_contextid() {
return $this->file_record->contextid;
}
/**
* Returns component name - this is the owner of the areas,
* nothing else is allowed to read or modify the files directly!!
*
* @return string
*/
public function get_component() {
return $this->file_record->component;
}
/**
* Returns file area name, this divides files of one component into groups with different access control.
* All files in one area have the same access control.
*
* @return string
*/
public function get_filearea() {
return $this->file_record->filearea;
}
/**
* Returns returns item id of file.
*
* @return int
*/
public function get_itemid() {
return $this->file_record->itemid;
}
/**
* Returns file path - starts and ends with /, \ are not allowed.
*
* @return string
*/
public function get_filepath() {
return $this->file_record->filepath;
}
/**
* Returns file name or '.' in case of directories.
*
* @return string
*/
public function get_filename() {
return $this->file_record->filename;
}
/**
* Returns id of user who created the file.
*
* @return int
*/
public function get_userid() {
return $this->file_record->userid;
}
/**
* Returns the size of file in bytes.
*
* @return int bytes
*/
public function get_filesize() {
$this->sync_external_file();
return $this->file_record->filesize;
}
/**
* Returns the size of file in bytes.
*
* @param int $filesize bytes
*/
public function set_filesize($filesize) {
debugging('Function stored_file::set_filesize() is deprecated. Please use stored_file::replace_file_with()', DEBUG_DEVELOPER);
$filerecord = new stdClass;
$filerecord->filesize = $filesize;
$this->update($filerecord);
}
/**
* Returns mime type of file.
*
* @return string
*/
public function get_mimetype() {
return $this->file_record->mimetype;
}
/**
* Returns unix timestamp of file creation date.
*
* @return int
*/
public function get_timecreated() {
return $this->file_record->timecreated;
}
/**
* Returns unix timestamp of last file modification.
*
* @return int
*/
public function get_timemodified() {
$this->sync_external_file();
return $this->file_record->timemodified;
}
/**
* set timemodified
*
* @param int $timemodified
*/
public function set_timemodified($timemodified) {
$filerecord = new stdClass;
$filerecord->timemodified = $timemodified;
$this->update($filerecord);
}
/**
* Returns file status flag.
*
* @return int 0 means file OK, anything else is a problem and file can not be used
*/
public function get_status() {
return $this->file_record->status;
}
/**
* Returns file id.
*
* @return int
*/
public function get_id() {
return $this->file_record->id;
}
/**
* Returns sha1 hash of file content.
*
* @return string
*/
public function get_contenthash() {
$this->sync_external_file();
return $this->file_record->contenthash;
}
/**
* Returns sha1 hash of all file path components sha1("contextid/component/filearea/itemid/dir/dir/filename.ext").
*
* @return string
*/
public function get_pathnamehash() {
return $this->file_record->pathnamehash;
}
/**
* Returns the license type of the file, it is a short name referred from license table.
*
* @return string
*/
public function get_license() {
return $this->file_record->license;
}
/**
* Set license
*
* @param string $license license
*/
public function set_license($license) {
$filerecord = new stdClass;
$filerecord->license = $license;
$this->update($filerecord);
}
/**
* Returns the author name of the file.
*
* @return string
*/
public function get_author() {
return $this->file_record->author;
}
/**
* Set author
*
* @param string $author
*/
public function set_author($author) {
$filerecord = new stdClass;
$filerecord->author = $author;
$this->update($filerecord);
}
/**
* Returns the source of the file, usually it is a url.
*
* @return string
*/
public function get_source() {
return $this->file_record->source;
}
/**
* Set license
*
* @param string $license license
*/
public function set_source($source) {
$filerecord = new stdClass;
$filerecord->source = $source;
$this->update($filerecord);
}
/**
* Returns the sort order of file
*
* @return int
*/
public function get_sortorder() {
return $this->file_record->sortorder;
}
/**
* Set file sort order
*
* @param int $sortorder
* @return int
*/
public function set_sortorder($sortorder) {
$filerecord = new stdClass;
$filerecord->sortorder = $sortorder;
$this->update($filerecord);
}
/**
* Returns repository id
*
* @return int|null
*/
public function get_repository_id() {
if (!empty($this->repository)) {
return $this->repository->id;
} else {
return null;
}
}
/**
* get reference file id
* @return int
*/
public function get_referencefileid() {
return $this->file_record->referencefileid;
}
/**
* Get reference last sync time
* @return int
*/
public function get_referencelastsync() {
return $this->file_record->referencelastsync;
}
/**
* Get reference life time (in seconds) after which sync is required
*
* This data is no longer stored in DB or returned by repository. Each
* repository should decide by itself when to synchronise the references.
*
* @deprecated since 2.6
* @see repository::sync_reference()
* @return int
*/
public function get_referencelifetime() {
debugging('Function stored_file::get_referencelifetime() is deprecated.', DEBUG_DEVELOPER);
if ($this->repository) {
if (method_exists($this->repository, 'get_reference_file_lifetime')) {
return $this->repository->get_reference_file_lifetime($this->get_reference());
} else {
return 24 * 60 * 60;
}
} else {
return 0;
}
}
/**
* Returns file reference
*
* @return string
*/
public function get_reference() {
return $this->file_record->reference;
}
/**
* Get human readable file reference information
*
* @return string
*/
public function get_reference_details() {
return $this->repository->get_reference_details($this->get_reference(), $this->get_status());
}
/**
* Called after reference-file has been synchronized with the repository
*
* We update contenthash, filesize and status in files table if changed
* and we always update lastsync in files_reference table
*
* @param null|string $contenthash if set to null contenthash is not changed
* @param int $filesize new size of the file
* @param int $status new status of the file (0 means OK, 666 - source missing)
*/
public function set_synchronized($contenthash, $filesize, $status = 0) {
if (!$this->is_external_file()) {
return;
}
$now = time();
if ($contenthash === null) {
$contenthash = $this->file_record->contenthash;
}
if ($contenthash != $this->file_record->contenthash) {
$oldcontenthash = $this->file_record->contenthash;
}
// this will update all entries in {files} that have the same filereference id
$this->fs->update_references($this->file_record->referencefileid, $now, null, $contenthash, $filesize, $status);
// we don't need to call update() for this object, just set the values of changed fields
$this->file_record->contenthash = $contenthash;
$this->file_record->filesize = $filesize;