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
|
<?php
/**
* @author Björn Schießle <schiessle@owncloud.com>
* @author Roeland Jago Douma <rullzer@owncloud.com>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @copyright Copyright (c) 2016, ownCloud, Inc.
* @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 OCA\FederatedFileSharing;
use OC\Share20\Share;
use OCP\Files\IRootFolder;
use OCP\IConfig;
use OCP\IL10N;
use OCP\ILogger;
use OCP\IUserManager;
use OCP\Share\IShare;
use OCP\Share\IShareProvider;
use OC\Share20\Exception\InvalidShare;
use OCP\Share\Exceptions\ShareNotFound;
use OCP\Files\NotFoundException;
use OCP\IDBConnection;
use OCP\Files\Node;
/**
* Class FederatedShareProvider
*
* @package OCA\FederatedFileSharing
*/
class FederatedShareProvider implements IShareProvider {
const SHARE_TYPE_REMOTE = 6;
/** @var IDBConnection */
private $dbConnection;
/** @var AddressHandler */
private $addressHandler;
/** @var Notifications */
private $notifications;
/** @var TokenHandler */
private $tokenHandler;
/** @var IL10N */
private $l;
/** @var ILogger */
private $logger;
/** @var IRootFolder */
private $rootFolder;
/** @var IConfig */
private $config;
/** @var string */
private $externalShareTable = 'share_external';
/** @var IUserManager */
private $userManager;
/**
* DefaultShareProvider constructor.
*
* @param IDBConnection $connection
* @param AddressHandler $addressHandler
* @param Notifications $notifications
* @param TokenHandler $tokenHandler
* @param IL10N $l10n
* @param ILogger $logger
* @param IRootFolder $rootFolder
* @param IConfig $config
* @param IUserManager $userManager
*/
public function __construct(
IDBConnection $connection,
AddressHandler $addressHandler,
Notifications $notifications,
TokenHandler $tokenHandler,
IL10N $l10n,
ILogger $logger,
IRootFolder $rootFolder,
IConfig $config,
IUserManager $userManager
) {
$this->dbConnection = $connection;
$this->addressHandler = $addressHandler;
$this->notifications = $notifications;
$this->tokenHandler = $tokenHandler;
$this->l = $l10n;
$this->logger = $logger;
$this->rootFolder = $rootFolder;
$this->config = $config;
$this->userManager = $userManager;
}
/**
* Return the identifier of this provider.
*
* @return string Containing only [a-zA-Z0-9]
*/
public function identifier() {
return 'ocFederatedSharing';
}
/**
* Share a path
*
* @param IShare $share
* @return IShare The share object
* @throws ShareNotFound
* @throws \Exception
*/
public function create(IShare $share) {
$shareWith = $share->getSharedWith();
$itemSource = $share->getNodeId();
$itemType = $share->getNodeType();
$permissions = $share->getPermissions();
$sharedBy = $share->getSharedBy();
/*
* Check if file is not already shared with the remote user
*/
$alreadyShared = $this->getSharedWith($shareWith, self::SHARE_TYPE_REMOTE, $share->getNode(), 1, 0);
if (!empty($alreadyShared)) {
$message = 'Sharing %s failed, because this item is already shared with %s';
$message_t = $this->l->t('Sharing %s failed, because this item is already shared with %s', array($share->getNode()->getName(), $shareWith));
$this->logger->debug(sprintf($message, $share->getNode()->getName(), $shareWith), ['app' => 'Federated File Sharing']);
throw new \Exception($message_t);
}
// don't allow federated shares if source and target server are the same
list($user, $remote) = $this->addressHandler->splitUserRemote($shareWith);
$currentServer = $this->addressHandler->generateRemoteURL();
$currentUser = $sharedBy;
if ($this->addressHandler->compareAddresses($user, $remote, $currentUser, $currentServer)) {
$message = 'Not allowed to create a federated share with the same user.';
$message_t = $this->l->t('Not allowed to create a federated share with the same user');
$this->logger->debug($message, ['app' => 'Federated File Sharing']);
throw new \Exception($message_t);
}
$share->setSharedWith($user . '@' . $remote);
try {
$remoteShare = $this->getShareFromExternalShareTable($share);
} catch (ShareNotFound $e) {
$remoteShare = null;
}
if ($remoteShare) {
try {
$uidOwner = $remoteShare['owner'] . '@' . $remoteShare['remote'];
$shareId = $this->addShareToDB($itemSource, $itemType, $shareWith, $sharedBy, $uidOwner, $permissions, 'tmp_token_' . time());
$share->setId($shareId);
list($token, $remoteId) = $this->askOwnerToReShare($shareWith, $share, $shareId);
// remote share was create successfully if we get a valid token as return
$send = is_string($token) && $token !== '';
} catch (\Exception $e) {
// fall back to old re-share behavior if the remote server
// doesn't support flat re-shares (was introduced with ownCloud 9.1)
$this->removeShareFromTable($share);
$shareId = $this->createFederatedShare($share);
}
if ($send) {
$this->updateSuccessfulReshare($shareId, $token);
$this->storeRemoteId($shareId, $remoteId);
} else {
$this->removeShareFromTable($share);
$message_t = $this->l->t('File is already shared with %s', [$shareWith]);
throw new \Exception($message_t);
}
} else {
$shareId = $this->createFederatedShare($share);
}
$data = $this->getRawShare($shareId);
return $this->createShareObject($data);
}
/**
* create federated share and inform the recipient
*
* @param IShare $share
* @return int
* @throws ShareNotFound
* @throws \Exception
*/
protected function createFederatedShare(IShare $share) {
$token = $this->tokenHandler->generateToken();
$shareId = $this->addShareToDB(
$share->getNodeId(),
$share->getNodeType(),
$share->getSharedWith(),
$share->getSharedBy(),
$share->getShareOwner(),
$share->getPermissions(),
$token
);
$sharedByFederatedId = $share->getSharedBy();
if ($this->userManager->userExists($sharedByFederatedId)) {
$sharedByFederatedId = $sharedByFederatedId . '@' . $this->addressHandler->generateRemoteURL();
}
$send = $this->notifications->sendRemoteShare(
$token,
$share->getSharedWith(),
$share->getNode()->getName(),
$shareId,
$share->getShareOwner(),
$share->getShareOwner() . '@' . $this->addressHandler->generateRemoteURL(),
$share->getSharedBy(),
$sharedByFederatedId
);
if ($send === false) {
$data = $this->getRawShare($shareId);
$share = $this->createShareObject($data);
$this->removeShareFromTable($share);
$message_t = $this->l->t('Sharing %s failed, could not find %s, maybe the server is currently unreachable.',
[$share->getNode()->getName(), $share->getSharedWith()]);
throw new \Exception($message_t);
}
return $shareId;
}
/**
* @param string $shareWith
* @param IShare $share
* @param string $shareId internal share Id
* @return array
* @throws \Exception
*/
protected function askOwnerToReShare($shareWith, IShare $share, $shareId) {
$remoteShare = $this->getShareFromExternalShareTable($share);
$token = $remoteShare['share_token'];
$remoteId = $remoteShare['remote_id'];
$remote = $remoteShare['remote'];
list($token, $remoteId) = $this->notifications->requestReShare(
$token,
$remoteId,
$shareId,
$remote,
$shareWith,
$share->getPermissions()
);
return [$token, $remoteId];
}
/**
* get federated share from the share_external table but exclude mounted link shares
*
* @param IShare $share
* @return array
* @throws ShareNotFound
*/
protected function getShareFromExternalShareTable(IShare $share) {
$query = $this->dbConnection->getQueryBuilder();
$query->select('*')->from($this->externalShareTable)
->where($query->expr()->eq('user', $query->createNamedParameter($share->getShareOwner())))
->andWhere($query->expr()->eq('mountpoint', $query->createNamedParameter($share->getTarget())));
$result = $query->execute()->fetchAll();
if (isset($result[0]) && (int)$result[0]['remote_id'] > 0) {
return $result[0];
}
throw new ShareNotFound('share not found in share_external table');
}
/**
* add share to the database and return the ID
*
* @param int $itemSource
* @param string $itemType
* @param string $shareWith
* @param string $sharedBy
* @param string $uidOwner
* @param int $permissions
* @param string $token
* @return int
*/
private function addShareToDB($itemSource, $itemType, $shareWith, $sharedBy, $uidOwner, $permissions, $token) {
$qb = $this->dbConnection->getQueryBuilder();
$qb->insert('share')
->setValue('share_type', $qb->createNamedParameter(self::SHARE_TYPE_REMOTE))
->setValue('item_type', $qb->createNamedParameter($itemType))
->setValue('item_source', $qb->createNamedParameter($itemSource))
->setValue('file_source', $qb->createNamedParameter($itemSource))
->setValue('share_with', $qb->createNamedParameter($shareWith))
->setValue('uid_owner', $qb->createNamedParameter($uidOwner))
->setValue('uid_initiator', $qb->createNamedParameter($sharedBy))
->setValue('permissions', $qb->createNamedParameter($permissions))
->setValue('token', $qb->createNamedParameter($token))
->setValue('stime', $qb->createNamedParameter(time()));
/*
* Added to fix https://github.com/owncloud/core/issues/22215
* Can be removed once we get rid of ajax/share.php
*/
$qb->setValue('file_target', $qb->createNamedParameter(''));
$qb->execute();
$id = $qb->getLastInsertId();
return (int)$id;
}
/**
* Update a share
*
* @param IShare $share
* @return IShare The share object
*/
public function update(IShare $share) {
/*
* We allow updating the permissions of federated shares
*/
$qb = $this->dbConnection->getQueryBuilder();
$qb->update('share')
->where($qb->expr()->eq('id', $qb->createNamedParameter($share->getId())))
->set('permissions', $qb->createNamedParameter($share->getPermissions()))
->set('uid_owner', $qb->createNamedParameter($share->getShareOwner()))
->set('uid_initiator', $qb->createNamedParameter($share->getSharedBy()))
->execute();
// send the updated permission to the owner/initiator, if they are not the same
if ($share->getShareOwner() !== $share->getSharedBy()) {
$this->sendPermissionUpdate($share);
}
return $share;
}
/**
* send the updated permission to the owner/initiator, if they are not the same
*
* @param IShare $share
* @throws ShareNotFound
* @throws \OC\HintException
*/
protected function sendPermissionUpdate(IShare $share) {
$remoteId = $this->getRemoteId($share);
// if the local user is the owner we send the permission change to the initiator
if ($this->userManager->userExists($share->getShareOwner())) {
list(, $remote) = $this->addressHandler->splitUserRemote($share->getSharedBy());
} else { // ... if not we send the permission change to the owner
list(, $remote) = $this->addressHandler->splitUserRemote($share->getShareOwner());
}
$this->notifications->sendPermissionChange($remote, $remoteId, $share->getToken(), $share->getPermissions());
}
/**
* update successful reShare with the correct token
*
* @param int $shareId
* @param string $token
*/
protected function updateSuccessfulReShare($shareId, $token) {
$query = $this->dbConnection->getQueryBuilder();
$query->update('share')
->where($query->expr()->eq('id', $query->createNamedParameter($shareId)))
->set('token', $query->createNamedParameter($token))
->execute();
}
/**
* store remote ID in federated reShare table
*
* @param $shareId
* @param $remoteId
*/
public function storeRemoteId($shareId, $remoteId) {
$query = $this->dbConnection->getQueryBuilder();
$query->insert('federated_reshares')
->values(
[
'share_id' => $query->createNamedParameter($shareId),
'remote_id' => $query->createNamedParameter($remoteId),
]
);
$query->execute();
}
/**
* get share ID on remote server for federated re-shares
*
* @param IShare $share
* @return int
* @throws ShareNotFound
*/
public function getRemoteId(IShare $share) {
$query = $this->dbConnection->getQueryBuilder();
$query->select('remote_id')->from('federated_reshares')
->where($query->expr()->eq('share_id', $query->createNamedParameter((int)$share->getId())));
$data = $query->execute()->fetch();
if (!is_array($data) || !isset($data['remote_id'])) {
throw new ShareNotFound();
}
return (int)$data['remote_id'];
}
/**
* @inheritdoc
*/
public function move(IShare $share, $recipient) {
/*
* This function does nothing yet as it is just for outgoing
* federated shares.
*/
return $share;
}
/**
* Get all children of this share
*
* @param IShare $parent
* @return IShare[]
*/
public function getChildren(IShare $parent) {
$children = [];
$qb = $this->dbConnection->getQueryBuilder();
$qb->select('*')
->from('share')
->where($qb->expr()->eq('parent', $qb->createNamedParameter($parent->getId())))
->andWhere($qb->expr()->eq('share_type', $qb->createNamedParameter(self::SHARE_TYPE_REMOTE)))
->orderBy('id');
$cursor = $qb->execute();
while($data = $cursor->fetch()) {
$children[] = $this->createShareObject($data);
}
$cursor->closeCursor();
return $children;
}
/**
* Delete a share (owner unShares the file)
*
* @param IShare $share
*/
public function delete(IShare $share) {
list(, $remote) = $this->addressHandler->splitUserRemote($share->getSharedWith());
$isOwner = false;
// if the local user is the owner we can send the unShare request directly...
if ($this->userManager->userExists($share->getShareOwner())) {
$this->notifications->sendRemoteUnShare($remote, $share->getId(), $share->getToken());
$this->revokeShare($share, true);
$isOwner = true;
} else { // ... if not we need to correct ID for the unShare request
$remoteId = $this->getRemoteId($share);
$this->notifications->sendRemoteUnShare($remote, $remoteId, $share->getToken());
$this->revokeShare($share, false);
}
// send revoke notification to the other user, if initiator and owner are not the same user
if ($share->getShareOwner() !== $share->getSharedBy()) {
$remoteId = $this->getRemoteId($share);
if ($isOwner) {
list(, $remote) = $this->addressHandler->splitUserRemote($share->getSharedBy());
} else {
list(, $remote) = $this->addressHandler->splitUserRemote($share->getShareOwner());
}
$this->notifications->sendRevokeShare($remote, $remoteId, $share->getToken());
}
$this->removeShareFromTable($share);
}
/**
* in case of a re-share we need to send the other use (initiator or owner)
* a message that the file was unshared
*
* @param IShare $share
* @param bool $isOwner the user can either be the owner or the user who re-sahred it
* @throws ShareNotFound
* @throws \OC\HintException
*/
protected function revokeShare($share, $isOwner) {
// also send a unShare request to the initiator, if this is a different user than the owner
if ($share->getShareOwner() !== $share->getSharedBy()) {
if ($isOwner) {
list(, $remote) = $this->addressHandler->splitUserRemote($share->getSharedBy());
} else {
list(, $remote) = $this->addressHandler->splitUserRemote($share->getShareOwner());
}
$remoteId = $this->getRemoteId($share);
$this->notifications->sendRevokeShare($remote, $remoteId, $share->getToken());
}
}
/**
* remove share from table
*
* @param IShare $share
*/
public function removeShareFromTable(IShare $share) {
$qb = $this->dbConnection->getQueryBuilder();
$qb->delete('share')
->where($qb->expr()->eq('id', $qb->createNamedParameter($share->getId())));
$qb->execute();
$qb->delete('federated_reshares')
->where($qb->expr()->eq('share_id', $qb->createNamedParameter($share->getId())));
$qb->execute();
}
/**
* @inheritdoc
*/
public function deleteFromSelf(IShare $share, $recipient) {
// nothing to do here. Technically deleteFromSelf in the context of federated
// shares is a umount of a external storage. This is handled here
// apps/files_sharing/lib/external/manager.php
// TODO move this code over to this app
return;
}
/**
* @inheritdoc
*/
public function getSharesBy($userId, $shareType, $node, $reshares, $limit, $offset) {
$qb = $this->dbConnection->getQueryBuilder();
$qb->select('*')
->from('share');
$qb->andWhere($qb->expr()->eq('share_type', $qb->createNamedParameter(self::SHARE_TYPE_REMOTE)));
/**
* Reshares for this user are shares where they are the owner.
*/
if ($reshares === false) {
//Special case for old shares created via the web UI
$or1 = $qb->expr()->andX(
$qb->expr()->eq('uid_owner', $qb->createNamedParameter($userId)),
$qb->expr()->isNull('uid_initiator')
);
$qb->andWhere(
$qb->expr()->orX(
$qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId)),
$or1
)
);
} else {
$qb->andWhere(
$qb->expr()->orX(
$qb->expr()->eq('uid_owner', $qb->createNamedParameter($userId)),
$qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId))
)
);
}
if ($node !== null) {
$qb->andWhere($qb->expr()->eq('file_source', $qb->createNamedParameter($node->getId())));
}
if ($limit !== -1) {
$qb->setMaxResults($limit);
}
$qb->setFirstResult($offset);
$qb->orderBy('id');
$cursor = $qb->execute();
$shares = [];
while($data = $cursor->fetch()) {
$shares[] = $this->createShareObject($data);
}
$cursor->closeCursor();
return $shares;
}
/**
* @inheritdoc
*/
public function getShareById($id, $recipientId = null) {
$qb = $this->dbConnection->getQueryBuilder();
$qb->select('*')
->from('share')
->where($qb->expr()->eq('id', $qb->createNamedParameter($id)))
->andWhere($qb->expr()->eq('share_type', $qb->createNamedParameter(self::SHARE_TYPE_REMOTE)));
$cursor = $qb->execute();
$data = $cursor->fetch();
$cursor->closeCursor();
if ($data === false) {
throw new ShareNotFound();
}
try {
$share = $this->createShareObject($data);
} catch (InvalidShare $e) {
throw new ShareNotFound();
}
return $share;
}
/**
* Get shares for a given path
*
* @param \OCP\Files\Node $path
* @return IShare[]
*/
public function getSharesByPath(Node $path) {
$qb = $this->dbConnection->getQueryBuilder();
$cursor = $qb->select('*')
->from('share')
->andWhere($qb->expr()->eq('file_source', $qb->createNamedParameter($path->getId())))
->andWhere($qb->expr()->eq('share_type', $qb->createNamedParameter(self::SHARE_TYPE_REMOTE)))
->execute();
$shares = [];
while($data = $cursor->fetch()) {
$shares[] = $this->createShareObject($data);
}
$cursor->closeCursor();
return $shares;
}
/**
* @inheritdoc
*/
public function getSharedWith($userId, $shareType, $node, $limit, $offset) {
/** @var IShare[] $shares */
$shares = [];
//Get shares directly with this user
$qb = $this->dbConnection->getQueryBuilder();
$qb->select('*')
->from('share');
// Order by id
$qb->orderBy('id');
// Set limit and offset
if ($limit !== -1) {
$qb->setMaxResults($limit);
}
$qb->setFirstResult($offset);
$qb->where($qb->expr()->eq('share_type', $qb->createNamedParameter(self::SHARE_TYPE_REMOTE)));
$qb->andWhere($qb->expr()->eq('share_with', $qb->createNamedParameter($userId)));
// Filter by node if provided
if ($node !== null) {
$qb->andWhere($qb->expr()->eq('file_source', $qb->createNamedParameter($node->getId())));
}
$cursor = $qb->execute();
while($data = $cursor->fetch()) {
$shares[] = $this->createShareObject($data);
}
$cursor->closeCursor();
return $shares;
}
/**
* Get a share by token
*
* @param string $token
* @return IShare
* @throws ShareNotFound
*/
public function getShareByToken($token) {
$qb = $this->dbConnection->getQueryBuilder();
$cursor = $qb->select('*')
->from('share')
->where($qb->expr()->eq('share_type', $qb->createNamedParameter(self::SHARE_TYPE_REMOTE)))
->andWhere($qb->expr()->eq('token', $qb->createNamedParameter($token)))
->execute();
$data = $cursor->fetch();
if ($data === false) {
throw new ShareNotFound();
}
try {
$share = $this->createShareObject($data);
} catch (InvalidShare $e) {
throw new ShareNotFound();
}
return $share;
}
/**
* get database row of a give share
*
* @param $id
* @return array
* @throws ShareNotFound
*/
private function getRawShare($id) {
// Now fetch the inserted share and create a complete share object
$qb = $this->dbConnection->getQueryBuilder();
$qb->select('*')
->from('share')
->where($qb->expr()->eq('id', $qb->createNamedParameter($id)));
$cursor = $qb->execute();
$data = $cursor->fetch();
$cursor->closeCursor();
if ($data === false) {
throw new ShareNotFound;
}
return $data;
}
/**
* Create a share object from an database row
*
* @param array $data
* @return IShare
* @throws InvalidShare
* @throws ShareNotFound
*/
private function createShareObject($data) {
$share = new Share($this->rootFolder, $this->userManager);
$share->setId((int)$data['id'])
->setShareType((int)$data['share_type'])
->setPermissions((int)$data['permissions'])
->setTarget($data['file_target'])
->setMailSend((bool)$data['mail_send'])
->setToken($data['token']);
$shareTime = new \DateTime();
$shareTime->setTimestamp((int)$data['stime']);
$share->setShareTime($shareTime);
$share->setSharedWith($data['share_with']);
if ($data['uid_initiator'] !== null) {
$share->setShareOwner($data['uid_owner']);
$share->setSharedBy($data['uid_initiator']);
} else {
//OLD SHARE
$share->setSharedBy($data['uid_owner']);
$path = $this->getNode($share->getSharedBy(), (int)$data['file_source']);
$owner = $path->getOwner();
$share->setShareOwner($owner->getUID());
}
$share->setNodeId((int)$data['file_source']);
$share->setNodeType($data['item_type']);
$share->setProviderId($this->identifier());
return $share;
}
/**
* Get the node with file $id for $user
*
* @param string $userId
* @param int $id
* @return \OCP\Files\File|\OCP\Files\Folder
* @throws InvalidShare
*/
private function getNode($userId, $id) {
try {
$userFolder = $this->rootFolder->getUserFolder($userId);
} catch (NotFoundException $e) {
throw new InvalidShare();
}
$nodes = $userFolder->getById($id);
if (empty($nodes)) {
throw new InvalidShare();
}
return $nodes[0];
}
/**
* A user is deleted from the system
* So clean up the relevant shares.
*
* @param string $uid
* @param int $shareType
*/
public function userDeleted($uid, $shareType) {
//TODO: probabaly a good idea to send unshare info to remote servers
$qb = $this->dbConnection->getQueryBuilder();
$qb->delete('share')
->where($qb->expr()->eq('share_type', $qb->createNamedParameter(\OCP\Share::SHARE_TYPE_REMOTE)))
->andWhere($qb->expr()->eq('uid_owner', $qb->createNamedParameter($uid)))
->execute();
}
/**
* This provider does not handle groups
*
* @param string $gid
*/
public function groupDeleted($gid) {
// We don't handle groups here
return;
}
/**
* This provider does not handle groups
*
* @param string $uid
* @param string $gid
*/
public function userDeletedFromGroup($uid, $gid) {
// We don't handle groups here
return;
}
/**
* check if users from other ownCloud instances are allowed to mount public links share by this instance
*
* @return bool
*/
public function isOutgoingServer2serverShareEnabled() {
$result = $this->config->getAppValue('files_sharing', 'outgoing_server2server_share_enabled', 'yes');
return ($result === 'yes') ? true : false;
}
/**
* check if users are allowed to mount public links from other ownClouds
*
* @return bool
*/
public function isIncomingServer2serverShareEnabled() {
$result = $this->config->getAppValue('files_sharing', 'incoming_server2server_share_enabled', 'yes');
return ($result === 'yes') ? true : false;
}
}
|