-
Notifications
You must be signed in to change notification settings - Fork 2.1k
/
Copy pathManager.php
1572 lines (1382 loc) · 48.5 KB
/
Manager.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
/**
* @author Arthur Schiwon <[email protected]>
* @author Björn Schießle <[email protected]>
* @author Joas Schilling <[email protected]>
* @author Roeland Jago Douma <[email protected]>
* @author Thomas Müller <[email protected]>
* @author Vincent Petry <[email protected]>
*
* @copyright Copyright (c) 2018, ownCloud GmbH
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Share20;
use OC\Cache\CappedMemoryCache;
use OC\Files\Mount\MoveableMount;
use OC\Files\View;
use OCP\Files\File;
use OCP\Files\Folder;
use OCP\Files\IRootFolder;
use OCP\Files\Mount\IMountManager;
use OCP\Files\NotFoundException;
use OCP\IConfig;
use OCP\IDBConnection;
use OCP\IGroupManager;
use OCP\IL10N;
use OCP\ILogger;
use OCP\IUserManager;
use OCP\Security\IHasher;
use OCP\Security\ISecureRandom;
use OCP\Share\Exceptions\GenericShareException;
use OCP\Share\Exceptions\ShareNotFound;
use OCP\Share\Exceptions\TransferSharesException;
use OCP\Share\IAttributes;
use OCP\Share\IManager;
use OCP\Share\IProviderFactory;
use OCP\Share\IShare;
use Symfony\Component\EventDispatcher\EventDispatcher;
use Symfony\Component\EventDispatcher\GenericEvent;
/**
* This class is the communication hub for all sharing related operations.
*/
class Manager implements IManager {
/** @var IProviderFactory */
private $factory;
/** @var ILogger */
private $logger;
/** @var IConfig */
private $config;
/** @var ISecureRandom */
private $secureRandom;
/** @var IHasher */
private $hasher;
/** @var IMountManager */
private $mountManager;
/** @var IGroupManager */
private $groupManager;
/** @var IL10N */
private $l;
/** @var IUserManager */
private $userManager;
/** @var IRootFolder */
private $rootFolder;
/** @var CappedMemoryCache */
private $sharingDisabledForUsersCache;
/** @var EventDispatcher */
private $eventDispatcher;
/** @var View */
private $view;
/** @var IDBConnection */
private $connection;
/**
* Manager constructor.
*
* @param ILogger $logger
* @param IConfig $config
* @param ISecureRandom $secureRandom
* @param IHasher $hasher
* @param IMountManager $mountManager
* @param IGroupManager $groupManager
* @param IL10N $l
* @param IProviderFactory $factory
* @param IUserManager $userManager
* @param IRootFolder $rootFolder
*/
public function __construct(
ILogger $logger,
IConfig $config,
ISecureRandom $secureRandom,
IHasher $hasher,
IMountManager $mountManager,
IGroupManager $groupManager,
IL10N $l,
IProviderFactory $factory,
IUserManager $userManager,
IRootFolder $rootFolder,
EventDispatcher $eventDispatcher,
View $view,
IDBConnection $connection
) {
$this->logger = $logger;
$this->config = $config;
$this->secureRandom = $secureRandom;
$this->hasher = $hasher;
$this->mountManager = $mountManager;
$this->groupManager = $groupManager;
$this->l = $l;
$this->factory = $factory;
$this->userManager = $userManager;
$this->rootFolder = $rootFolder;
$this->sharingDisabledForUsersCache = new CappedMemoryCache();
$this->eventDispatcher = $eventDispatcher;
$this->view = $view;
$this->connection = $connection;
}
/**
* @param int[] $shareTypes - ref \OC\Share\Constants[]
* @return int[] $providerIdMap e.g. { "ocinternal" => { 0, 1 }[2] }[1]
*/
private function shareTypeToProviderMap($shareTypes) {
$providerIdMap = [];
foreach ($shareTypes as $shareType) {
// Get provider and its ID, at this point provider is cached at IProviderFactory instance
$provider = $this->factory->getProviderForType($shareType);
$providerId = $provider->identifier();
// Create a key -> multi value map
$providerIdMap[$providerId][] = $shareType;
}
return $providerIdMap;
}
/**
* Convert from a full share id to a tuple (providerId, shareId)
*
* @param string $id
* @return string[]
*/
private function splitFullId($id) {
return \explode(':', $id, 2);
}
/**
* Verify if a password meets all requirements
*
* @param string $password
* @throws \Exception
*/
protected function verifyPassword($password) {
// Let others verify the password
$accepted = true;
$message = '';
\OCP\Util::emitHook('\OC\Share', 'verifyPassword', [
'password' => $password,
'accepted' => &$accepted,
'message' => &$message
]);
if (!$accepted) {
throw new \Exception($message);
}
$this->eventDispatcher->dispatch(
'OCP\Share::validatePassword',
new GenericEvent(null, ['password' => $password])
);
}
/**
* Check if a password must be enforced if the shared has those permissions
* @param int $permissions \OCP\Constants::PERMISSION_* ("|" can be use for sets of permissions)
* @return bool true if the password must be enforced, false otherwise
*/
protected function passwordMustBeEnforced($permissions) {
$roEnforcement = $permissions === \OCP\Constants::PERMISSION_READ && $this->shareApiLinkEnforcePasswordReadOnly();
$woEnforcement = $permissions === \OCP\Constants::PERMISSION_CREATE && $this->shareApiLinkEnforcePasswordWriteOnly();
// use read & write enforcement for the rest of the cases
$rwEnforcement = ($permissions !== \OCP\Constants::PERMISSION_READ && $permissions !== \OCP\Constants::PERMISSION_CREATE) && $this->shareApiLinkEnforcePasswordReadWrite();
if ($roEnforcement || $woEnforcement || $rwEnforcement) {
return true;
} else {
return false;
}
}
/**
* Check for generic requirements before creating a share
*
* @param \OCP\Share\IShare $share
* @throws \InvalidArgumentException
* @throws GenericShareException
*/
protected function generalCreateChecks(\OCP\Share\IShare $share) {
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER) {
// We expect a valid user as sharedWith for user shares
if (!$this->userManager->userExists($share->getSharedWith())) {
throw new \InvalidArgumentException('SharedWith is not a valid user');
}
} elseif ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
// We expect a valid group as sharedWith for group shares
if (!$this->groupManager->groupExists($share->getSharedWith())) {
throw new \InvalidArgumentException('SharedWith is not a valid group');
}
} elseif ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
if ($share->getSharedWith() !== null) {
throw new \InvalidArgumentException('SharedWith should be empty');
}
} elseif ($share->getShareType() === \OCP\Share::SHARE_TYPE_REMOTE) {
if ($share->getSharedWith() === null) {
throw new \InvalidArgumentException('SharedWith should not be empty');
}
} else {
// We can't handle other types yet
throw new \InvalidArgumentException('unkown share type');
}
// Verify the initiator of the share is set
if ($share->getSharedBy() === null) {
throw new \InvalidArgumentException('SharedBy should be set');
}
// Cannot share with yourself
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER &&
$share->getSharedWith() === $share->getSharedBy()) {
throw new \InvalidArgumentException('Can\'t share with yourself');
}
// The path should be set
if ($share->getNode() === null) {
throw new \InvalidArgumentException('Path should be set');
}
// And it should be a file or a folder
if (!($share->getNode() instanceof \OCP\Files\File) &&
!($share->getNode() instanceof \OCP\Files\Folder)) {
throw new \InvalidArgumentException('Path should be either a file or a folder');
}
// And you can't share your rootfolder
if ($this->userManager->userExists($share->getSharedBy())) {
$sharedPath = $this->rootFolder->getUserFolder($share->getSharedBy())->getPath();
} else {
$sharedPath = $this->rootFolder->getUserFolder($share->getShareOwner())->getPath();
}
if ($sharedPath === $share->getNode()->getPath()) {
throw new \InvalidArgumentException('You can\'t share your root folder');
}
// Check if we actually have share permissions
if (!$share->getNode()->isShareable()) {
$message_t = $this->l->t('You are not allowed to share %s', [$share->getNode()->getPath()]);
throw new GenericShareException($message_t, $message_t, 404);
}
// Permissions should be set
if ($share->getPermissions() === null) {
throw new \InvalidArgumentException('A share requires permissions');
}
/*
* Quick fix for #23536
* Non moveable mount points do not have update and delete permissions
* while we 'most likely' do have that on the storage.
*/
$permissions = $share->getNode()->getPermissions();
$mount = $share->getNode()->getMountPoint();
if (!($mount instanceof MoveableMount)) {
$permissions |= \OCP\Constants::PERMISSION_DELETE | \OCP\Constants::PERMISSION_UPDATE;
}
// Check that we do not share with more permissions than we have
if ($share->getPermissions() & ~$permissions) {
$message_t = $this->l->t('Cannot increase permissions of %s', [$share->getNode()->getPath()]);
throw new GenericShareException($message_t, $message_t, 404);
}
if ($share->getNode() instanceof \OCP\Files\File) {
if ($share->getPermissions() & \OCP\Constants::PERMISSION_DELETE) {
$message_t = $this->l->t('Files can\'t be shared with delete permissions');
throw new GenericShareException($message_t);
}
if ($share->getPermissions() & \OCP\Constants::PERMISSION_CREATE) {
$message_t = $this->l->t('Files can\'t be shared with create permissions');
throw new GenericShareException($message_t);
}
}
}
/**
* Validate if the expiration date fits the system settings
*
* @param \OCP\Share\IShare $share The share to validate the expiration date of
* @return \OCP\Share\IShare The modified share object
* @throws GenericShareException
* @throws \InvalidArgumentException
* @throws \Exception
*/
protected function validateExpirationDate(\OCP\Share\IShare $share) {
$expirationDate = $share->getExpirationDate();
if ($expirationDate !== null) {
//Make sure the expiration date is a date
$expirationDate->setTime(0, 0, 0);
$date = new \DateTime();
$date->setTime(0, 0, 0);
if ($date >= $expirationDate) {
$message = $this->l->t('Expiration date is in the past');
throw new GenericShareException($message, $message, 404);
}
}
// If we enforce the expiration date check that is does not exceed
if ($this->shareApiLinkDefaultExpireDateEnforced()) {
// If expiredate is empty and it is a new share, set a default one if there is a default
if ($this->isNewShare($share) && $expirationDate === null && $this->shareApiLinkDefaultExpireDate()) {
$expirationDate = new \DateTime();
$expirationDate->setTime(0, 0, 0);
$expirationDate->add(new \DateInterval('P'.$this->shareApiLinkDefaultExpireDays().'D'));
}
if ($expirationDate === null) {
throw new \InvalidArgumentException('Expiration date is enforced');
}
$date = new \DateTime();
$date->setTime(0, 0, 0);
$date->add(new \DateInterval('P' . $this->shareApiLinkDefaultExpireDays() . 'D'));
if ($date < $expirationDate) {
$message = $this->l->t('Cannot set expiration date more than %s days in the future', [$this->shareApiLinkDefaultExpireDays()]);
throw new GenericShareException($message, $message, 404);
}
}
$accepted = true;
$message = '';
\OCP\Util::emitHook('\OC\Share', 'verifyExpirationDate', [
'expirationDate' => &$expirationDate,
'accepted' => &$accepted,
'message' => &$message,
'passwordSet' => $share->getPassword() !== null,
]);
if (!$accepted) {
throw new \Exception($message);
}
$share->setExpirationDate($expirationDate);
return $share;
}
/**
* Check for pre share requirements for user shares
*
* @param \OCP\Share\IShare $share
* @throws \Exception
*/
protected function userCreateChecks(\OCP\Share\IShare $share) {
// Check if we can share with group members only
if ($this->shareWithGroupMembersOnly()) {
$sharedBy = $this->userManager->get($share->getSharedBy());
$sharedWith = $this->userManager->get($share->getSharedWith());
// Verify we can share with this user
$groups = \array_intersect(
$this->groupManager->getUserGroupIds($sharedBy),
$this->groupManager->getUserGroupIds($sharedWith)
);
if (empty($groups)) {
throw new \Exception('Only sharing with group members is allowed');
}
}
/*
* TODO: Could be costly, fix
*
* Also this is not what we want in the future.. then we want to squash identical shares.
*/
$provider = $this->factory->getProviderForType(\OCP\Share::SHARE_TYPE_USER);
$existingShares = $provider->getSharesByPath($share->getNode());
foreach ($existingShares as $existingShare) {
// Ignore if it is the same share
try {
if ($existingShare->getFullId() === $share->getFullId()) {
continue;
}
} catch (\UnexpectedValueException $e) {
//Shares are not identical
}
// Identical share already existst
if ($existingShare->getSharedWith() === $share->getSharedWith()) {
throw new \Exception('Path already shared with this user');
}
// The share is already shared with this user via a group share
if ($existingShare->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
$group = $this->groupManager->get($existingShare->getSharedWith());
if ($group !== null) {
$user = $this->userManager->get($share->getSharedWith());
if ($group->inGroup($user) && $existingShare->getShareOwner() !== $share->getShareOwner()) {
throw new \Exception('Path already shared with this user');
}
}
}
}
}
/**
* Check for pre share requirements for group shares
*
* @param \OCP\Share\IShare $share
* @throws \Exception
*/
protected function groupCreateChecks(\OCP\Share\IShare $share) {
// Verify group shares are allowed
if (!$this->allowGroupSharing()) {
throw new \Exception('Group sharing is not allowed');
}
// Verify if the user can share with this group
if ($this->shareWithMembershipGroupOnly()) {
$sharedBy = $this->userManager->get($share->getSharedBy());
$sharedWith = $this->groupManager->get($share->getSharedWith());
if ($sharedWith === null || !$sharedWith->inGroup($sharedBy)) {
throw new \Exception('Only sharing within your own groups is allowed');
}
}
/*
* TODO: Could be costly, fix
*
* Also this is not what we want in the future.. then we want to squash identical shares.
*/
$provider = $this->factory->getProviderForType(\OCP\Share::SHARE_TYPE_GROUP);
$existingShares = $provider->getSharesByPath($share->getNode());
foreach ($existingShares as $existingShare) {
try {
if ($existingShare->getFullId() === $share->getFullId()) {
continue;
}
} catch (\UnexpectedValueException $e) {
//It is a new share so just continue
}
if ($existingShare->getSharedWith() === $share->getSharedWith()) {
throw new \Exception('Path already shared with this group');
}
}
}
/**
* Check for pre share requirements for link shares
*
* @param \OCP\Share\IShare $share
* @throws \Exception
*/
protected function linkCreateChecks(\OCP\Share\IShare $share) {
// Are link shares allowed?
if (!$this->shareApiAllowLinks()) {
throw new \Exception('Link sharing not allowed');
}
// Link shares by definition can't have share permissions
if ($share->getPermissions() & \OCP\Constants::PERMISSION_SHARE) {
throw new \InvalidArgumentException('Link shares can\'t have reshare permissions');
}
// Check if public upload is allowed
if (!$this->shareApiLinkAllowPublicUpload() &&
($share->getPermissions() & (\OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE))) {
throw new \InvalidArgumentException('Public upload not allowed');
}
}
/**
* To make sure we don't get invisible link shares we set the parent
* of a link if it is a reshare. This is a quick word around
* until we can properly display multiple link shares in the UI
*
* See: https://github.com/owncloud/core/issues/22295
*
* FIXME: Remove once multiple link shares can be properly displayed
*
* @param \OCP\Share\IShare $share
*/
protected function setLinkParent(\OCP\Share\IShare $share) {
// No sense in checking if the method is not there.
if (\method_exists($share, 'setParent')) {
$storage = $share->getNode()->getStorage();
if ($storage->instanceOfStorage('\OCA\Files_Sharing\ISharedStorage')) {
$share->setParent($storage->getShareId());
}
};
}
/**
* @param File|Folder $path
*/
protected function pathCreateChecks($path) {
// Make sure that we do not share a path that contains a shared mountpoint
if ($path instanceof \OCP\Files\Folder) {
$mounts = $this->mountManager->findIn($path->getPath());
foreach ($mounts as $mount) {
if ($mount->getStorage()->instanceOfStorage('\OCA\Files_Sharing\ISharedStorage')) {
throw new \InvalidArgumentException('Path contains files shared with you');
}
}
}
}
/**
* Check if the user that is sharing can actually share
*
* @param \OCP\Share\IShare $share
* @throws \Exception
*/
protected function canShare(\OCP\Share\IShare $share) {
if (!$this->shareApiEnabled()) {
throw new \Exception('The share API is disabled');
}
if ($this->sharingDisabledForUser($share->getSharedBy())) {
throw new \Exception('You are not allowed to share');
}
}
/**
* Share a path
*
* @param \OCP\Share\IShare $share
* @return Share The share object
* @throws \Exception
*
* TODO: handle link share permissions or check them
*/
public function createShare(\OCP\Share\IShare $share) {
$this->canShare($share);
$this->generalCreateChecks($share);
// Verify if there are any issues with the path
$this->pathCreateChecks($share->getNode());
/*
* On creation of a share the owner is always the owner of the path
* Except for mounted federated shares.
*/
$storage = $share->getNode()->getStorage();
if ($storage->instanceOfStorage('OCA\Files_Sharing\External\Storage')) {
$parent = $share->getNode()->getParent();
while ($parent->getStorage()->instanceOfStorage('OCA\Files_Sharing\External\Storage')) {
$parent = $parent->getParent();
}
$share->setShareOwner($parent->getOwner()->getUID());
} else {
$share->setShareOwner($share->getNode()->getOwner()->getUID());
}
//Verify share type
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER) {
$this->userCreateChecks($share);
} elseif ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
$this->groupCreateChecks($share);
} elseif ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
$this->linkCreateChecks($share);
$this->setLinkParent($share);
/*
* For now ignore a set token.
*/
$share->setToken(
$this->secureRandom->generate(
\OC\Share\Constants::TOKEN_LENGTH,
\OCP\Security\ISecureRandom::CHAR_LOWER.
\OCP\Security\ISecureRandom::CHAR_UPPER.
\OCP\Security\ISecureRandom::CHAR_DIGITS
)
);
//Verify the expiration date
$this->validateExpirationDate($share);
//Verify the password
if ($this->passwordMustBeEnforced($share->getPermissions()) && $share->getPassword() === null) {
throw new \InvalidArgumentException('Passwords are enforced for link shares');
} else {
$this->verifyPassword($share->getPassword());
}
// If a password is set. Hash it!
if (($share->getPassword() !== null) && ($share->getShouldHashPassword() === true)) {
$share->setPassword($this->hasher->hash($share->getPassword()));
}
}
// Cannot share with the owner
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER &&
$share->getSharedWith() === $share->getShareOwner()) {
throw new \InvalidArgumentException('Can\'t share with the share owner');
}
// Generate the target
$target = $this->config->getSystemValue('share_folder', '/') .'/'. $share->getNode()->getName();
$target = \OC\Files\Filesystem::normalizePath($target);
$share->setTarget($target);
// Pre share hook
$run = true;
$error = '';
$preHookData = [
'itemType' => $share->getNode() instanceof \OCP\Files\File ? 'file' : 'folder',
'itemSource' => $share->getNode()->getId(),
'shareType' => $share->getShareType(),
'uidOwner' => $share->getSharedBy(),
'permissions' => $share->getPermissions(),
'attributes' => $share->getAttributes(),
'fileSource' => $share->getNode()->getId(),
'expiration' => $share->getExpirationDate(),
'token' => $share->getToken(),
'itemTarget' => $share->getTarget(),
'shareWith' => $share->getSharedWith(),
'run' => &$run,
'error' => &$error,
];
\OC_Hook::emit('OCP\Share', 'pre_shared', $preHookData);
$beforeEvent = new GenericEvent(null, ['shareData' => $preHookData, 'shareObject' => $share]);
$this->eventDispatcher->dispatch('share.beforeCreate', $beforeEvent);
if ($run === false) {
throw new \Exception($error);
}
$provider = $this->factory->getProviderForType($share->getShareType());
$share = $provider->create($share);
// Post share hook
$postHookData = [
'itemType' => $share->getNode() instanceof \OCP\Files\File ? 'file' : 'folder',
'itemSource' => $share->getNode()->getId(),
'shareType' => $share->getShareType(),
'uidOwner' => $share->getSharedBy(),
'permissions' => $share->getPermissions(),
'attributes' => $share->getAttributes(),
'fileSource' => $share->getNode()->getId(),
'expiration' => $share->getExpirationDate(),
'token' => $share->getToken(),
'id' => $share->getId(),
'shareWith' => $share->getSharedWith(),
'itemTarget' => $share->getTarget(),
'fileTarget' => $share->getTarget(),
'passwordEnabled' => ($share->getPassword() !== null and ($share->getPassword() !== '')),
];
\OC_Hook::emit('OCP\Share', 'post_shared', $postHookData);
$afterEvent = new GenericEvent(null, ['shareData' => $postHookData, 'shareObject' => $share]);
$this->eventDispatcher->dispatch('share.afterCreate', $afterEvent);
return $share;
}
/**
* Transfer shares from oldOwner to newOwner. Both old and new owners are uid
*
* finalTarget is of the form "user1/files/transferred from admin on 20180509"
*
* TransferShareException would be thrown when:
* - oldOwner, newOwner does not exist.
* - oldOwner and newOwner are same
* NotFoundException would be thrown when finalTarget does not exist in the file
* system
*
* @param IShare $share
* @param string $oldOwner
* @param string $newOwner
* @param string $finalTarget
* @param null|bool $isChild
* @throws TransferSharesException
* @throws NotFoundException
*/
public function transferShare(IShare $share, $oldOwner, $newOwner, $finalTarget, $isChild = null) {
if ($this->userManager->get($oldOwner) === null) {
throw new TransferSharesException("The current owner of the share $oldOwner doesn't exist");
}
if ($this->userManager->get($newOwner) === null) {
throw new TransferSharesException("The future owner $newOwner, where the share has to be moved doesn't exist");
}
if ($oldOwner === $newOwner) {
throw new TransferSharesException("The current owner of the share and the future owner of the share are same");
}
//If the destination location, i.e finalTarget is not present, then
//throw an exception
if (!$this->view->file_exists($finalTarget)) {
throw new NotFoundException("The target location $finalTarget doesn't exist");
}
if ($isChild === true) {
//Set the parent to null so that we don't lose the shares after transfer
$builder = $this->connection->getQueryBuilder();
$builder->update('share')
->set('parent', 'null')
->where($builder->expr()->eq('id', $builder->createNamedParameter($share->getId())))
->execute();
}
/**
* If the share was already shared with new owner, then we can delete it
*/
if ($share->getSharedWith() === $newOwner) {
// Unmount the shares before deleting, so we don't try to get the storage later on.
$shareMountPoint = $this->mountManager->find('/' . $newOwner . '/files' . $share->getTarget());
if ($shareMountPoint) {
$this->mountManager->removeMount($shareMountPoint->getMountPoint());
}
$provider = $this->factory->getProviderForType($share->getShareType());
//Try to get the children transferred and then delete the parent
foreach ($provider->getChildren($share) as $child) {
$this->transferShare($child, $oldOwner, $newOwner, $finalTarget, true);
}
$this->deleteShare($share);
} else {
$sharedWith = $share->getSharedWith();
$targetFile = '/' . \rtrim(\basename($finalTarget), '/') . '/' . \ltrim(\basename($share->getTarget()), '/');
/**
* Scenario where share is made by old owner to a user different
* from new owner
*/
if (($sharedWith !== null) && ($sharedWith !== $oldOwner) && ($sharedWith !== $newOwner)) {
$sharedBy = $share->getSharedBy();
$sharedOwner = $share->getShareOwner();
//The origin of the share now has to be the destination user.
if ($sharedBy === $oldOwner) {
$share->setSharedBy($newOwner);
}
if ($sharedOwner === $oldOwner) {
$share->setShareOwner($newOwner);
}
if (($sharedBy === $oldOwner) || ($sharedOwner === $oldOwner)) {
$share->setTarget($targetFile);
}
} else {
if ($share->getShareOwner() === $oldOwner) {
$share->setShareOwner($newOwner);
}
if ($share->getSharedBy() === $oldOwner) {
$share->setSharedBy($newOwner);
}
}
/**
* Here we update the target when the share is link
*/
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
$share->setTarget($targetFile);
}
$this->updateShare($share);
}
}
/**
* Update a share
*
* @param \OCP\Share\IShare $share
* @return \OCP\Share\IShare The share object
* @throws \InvalidArgumentException
*/
public function updateShare(\OCP\Share\IShare $share) {
$expirationDateUpdated = false;
$this->canShare($share);
try {
$originalShare = $this->getShareById($share->getFullId());
} catch (\UnexpectedValueException $e) {
throw new \InvalidArgumentException('Share does not have a full id');
}
// We can't change the share type!
if ($share->getShareType() !== $originalShare->getShareType()) {
throw new \InvalidArgumentException('Can\'t change share type');
}
// We can only change the recipient on user shares
if ($share->getSharedWith() !== $originalShare->getSharedWith() &&
$share->getShareType() !== \OCP\Share::SHARE_TYPE_USER) {
throw new \InvalidArgumentException('Can only update recipient on user shares');
}
// Cannot share with the owner
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER &&
$share->getSharedWith() === $share->getShareOwner()) {
throw new \InvalidArgumentException('Can\'t share with the share owner');
}
$this->generalCreateChecks($share);
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER) {
$this->userCreateChecks($share);
} elseif ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
$this->groupCreateChecks($share);
} elseif ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
$this->linkCreateChecks($share);
// Password updated.
if ($share->getPassword() !== $originalShare->getPassword() ||
$share->getPermissions() !== $originalShare->getPermissions()) {
//Verify the password. Permissions must be taken into account in case the password must be enforced
if ($this->passwordMustBeEnforced($share->getPermissions()) && $share->getPassword() === null) {
throw new \InvalidArgumentException('Passwords are enforced for link shares');
} else {
$this->verifyPassword($share->getPassword());
}
// If a password is set. Hash it! (only if the password has changed)
if (($share->getPassword() !== null) &&
($share->getPassword() !== $originalShare->getPassword()) &&
($share->getShouldHashPassword() === true)) {
$share->setPassword($this->hasher->hash($share->getPassword()));
}
}
//Verify the expiration date
$this->validateExpirationDate($share);
if ($share->getExpirationDate() != $originalShare->getExpirationDate()) {
$expirationDateUpdated = true;
}
}
$this->pathCreateChecks($share->getNode());
// Now update the share!
$provider = $this->factory->getProviderForType($share->getShareType());
$share = $provider->update($share);
$shareAfterUpdateEvent = new GenericEvent(null);
$shareAfterUpdateEvent->setArgument('shareobject', $share);
$update = false;
if ($expirationDateUpdated === true) {
\OC_Hook::emit('OCP\Share', 'post_set_expiration_date', [
'itemType' => $share->getNode() instanceof \OCP\Files\File ? 'file' : 'folder',
'itemSource' => $share->getNode()->getId(),
'date' => $share->getExpirationDate(),
'uidOwner' => $share->getSharedBy(),
]);
$shareAfterUpdateEvent->setArgument('expirationdateupdated', true);
$shareAfterUpdateEvent->setArgument('oldexpirationdate', $originalShare->getExpirationDate());
$update = true;
}
if ($share->getPassword() !== $originalShare->getPassword()) {
\OC_Hook::emit('OCP\Share', 'post_update_password', [
'itemType' => $share->getNode() instanceof \OCP\Files\File ? 'file' : 'folder',
'itemSource' => $share->getNode()->getId(),
'uidOwner' => $share->getSharedBy(),
'token' => $share->getToken(),
'disabled' => $share->getPassword() === null,
]);
$shareAfterUpdateEvent->setArgument('passwordupdate', true);
$update = true;
}
if ($share->getPermissions() !== $originalShare->getPermissions()) {
if ($this->userManager->userExists($share->getShareOwner())) {
$userFolder = $this->rootFolder->getUserFolder($share->getShareOwner());
} else {
$userFolder = $this->rootFolder->getUserFolder($share->getSharedBy());
}
\OC_Hook::emit('OCP\Share', 'post_update_permissions', [
'itemType' => $share->getNode() instanceof \OCP\Files\File ? 'file' : 'folder',
'itemSource' => $share->getNode()->getId(),
'shareType' => $share->getShareType(),
'shareWith' => $share->getSharedWith(),
'uidOwner' => $share->getSharedBy(),
'permissions' => $share->getPermissions(),
'path' => $userFolder->getRelativePath($share->getNode()->getPath()),
]);
$shareAfterUpdateEvent->setArgument('permissionupdate', true);
$shareAfterUpdateEvent->setArgument('oldpermissions', $originalShare->getPermissions());
$shareAfterUpdateEvent->setArgument('path', $userFolder->getRelativePath($share->getNode()->getPath()));
$update = true;
}
if ($this->hashAttributes($share->getAttributes()) !== $this->hashAttributes($originalShare->getAttributes())) {
$shareAfterUpdateEvent->setArgument('attributesupdate', true);
$update = true;
}
if ($share->getName() !== $originalShare->getName()) {
$shareAfterUpdateEvent->setArgument('sharenameupdated', true);
$shareAfterUpdateEvent->setArgument('oldname', $originalShare->getName());
$update = true;
}
if ($update === true) {
$this->eventDispatcher->dispatch('share.afterupdate', $shareAfterUpdateEvent);
}
return $share;
}
/**
* Delete all the children of this share
* FIXME: remove once https://github.com/owncloud/core/pull/21660 is in
*
* @param \OCP\Share\IShare $share
* @return \OCP\Share\IShare[] List of deleted shares
*/
protected function deleteChildren(\OCP\Share\IShare $share) {
$deletedShares = [];
$provider = $this->factory->getProviderForType($share->getShareType());
foreach ($provider->getChildren($share) as $child) {
$deletedChildren = $this->deleteChildren($child);
$deletedShares = \array_merge($deletedShares, $deletedChildren);
$provider->delete($child);
$deletedShares[] = $child;
}
return $deletedShares;
}
protected static function formatUnshareHookParams(\OCP\Share\IShare $share) {
// Prepare hook
$shareType = $share->getShareType();
$sharedWith = '';
if ($shareType === \OCP\Share::SHARE_TYPE_USER) {
$sharedWith = $share->getSharedWith();
} elseif ($shareType === \OCP\Share::SHARE_TYPE_GROUP) {
$sharedWith = $share->getSharedWith();
} elseif ($shareType === \OCP\Share::SHARE_TYPE_REMOTE) {
$sharedWith = $share->getSharedWith();
}
$hookParams = [
'id' => $share->getId(),
'itemType' => $share->getNodeType(),
'itemSource' => $share->getNodeId(),
'shareType' => $shareType,
'shareWith' => $sharedWith,
'itemparent' => \method_exists($share, 'getParent') ? $share->getParent() : '',
'uidOwner' => $share->getSharedBy(),
'fileSource' => $share->getNodeId(),
'fileTarget' => $share->getTarget()
];
return $hookParams;
}
/**
* Delete a share
*
* @param \OCP\Share\IShare $share
* @throws ShareNotFound
* @throws \InvalidArgumentException
*/
public function deleteShare(\OCP\Share\IShare $share) {
try {
$share->getFullId();
} catch (\UnexpectedValueException $e) {
throw new \InvalidArgumentException('Share does not have a full id');
}
$hookParams = self::formatUnshareHookParams($share);
// Emit pre-hook
\OC_Hook::emit('OCP\Share', 'pre_unshare', $hookParams);
$beforeEvent = new GenericEvent(null, ['shareData' => $hookParams, 'shareObject' => $share]);
$this->eventDispatcher->dispatch('share.beforeDelete', $beforeEvent);
// Get all children and delete them as well
$deletedShares = $this->deleteChildren($share);
// Do the actual delete