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
|
<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Bernhard Posselt <dev@bernhard-posselt.com>
* @author Joas Schilling <coding@schilljs.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <robin@icewind.nl>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @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\Files\Node;
use OC\Files\Filesystem;
use OCP\Files\FileInfo;
use OCP\Files\InvalidPathException;
use OCP\Files\NotFoundException;
use OCP\Files\NotPermittedException;
// FIXME: this class really should be abstract
class Node implements \OCP\Files\Node {
/**
* @var \OC\Files\View $view
*/
protected $view;
/**
* @var \OC\Files\Node\Root $root
*/
protected $root;
/**
* @var string $path
*/
protected $path;
/**
* @var \OCP\Files\FileInfo
*/
protected $fileInfo;
/**
* @param \OC\Files\View $view
* @param \OCP\Files\IRootFolder $root
* @param string $path
* @param FileInfo $fileInfo
*/
public function __construct($root, $view, $path, $fileInfo = null) {
$this->view = $view;
$this->root = $root;
$this->path = $path;
$this->fileInfo = $fileInfo;
}
/**
* Creates a Node of the same type that represents a non-existing path
*
* @param string $path path
* @return string non-existing node class
*/
protected function createNonExistingNode($path) {
throw new \Exception('Must be implemented by subclasses');
}
/**
* Returns the matching file info
*
* @return FileInfo
* @throws InvalidPathException
* @throws NotFoundException
*/
public function getFileInfo() {
if (!Filesystem::isValidPath($this->path)) {
throw new InvalidPathException();
}
if (!$this->fileInfo) {
$fileInfo = $this->view->getFileInfo($this->path);
if ($fileInfo instanceof FileInfo) {
$this->fileInfo = $fileInfo;
} else {
throw new NotFoundException();
}
}
return $this->fileInfo;
}
/**
* @param string[] $hooks
*/
protected function sendHooks($hooks) {
foreach ($hooks as $hook) {
$this->root->emit('\OC\Files', $hook, array($this));
}
}
/**
* @param int $permissions
* @return bool
*/
protected function checkPermissions($permissions) {
return ($this->getPermissions() & $permissions) === $permissions;
}
public function delete() {
return;
}
/**
* @param int $mtime
* @throws \OCP\Files\NotPermittedException
*/
public function touch($mtime = null) {
if ($this->checkPermissions(\OCP\Constants::PERMISSION_UPDATE)) {
$this->sendHooks(array('preTouch'));
$this->view->touch($this->path, $mtime);
$this->sendHooks(array('postTouch'));
if ($this->fileInfo) {
if (is_null($mtime)) {
$mtime = time();
}
$this->fileInfo['mtime'] = $mtime;
}
} else {
throw new NotPermittedException();
}
}
/**
* @return \OC\Files\Storage\Storage
* @throws \OCP\Files\NotFoundException
*/
public function getStorage() {
list($storage,) = $this->view->resolvePath($this->path);
return $storage;
}
/**
* @return string
*/
public function getPath() {
return $this->path;
}
/**
* @return string
*/
public function getInternalPath() {
list(, $internalPath) = $this->view->resolvePath($this->path);
return $internalPath;
}
/**
* @return int
* @throws InvalidPathException
* @throws NotFoundException
*/
public function getId() {
return $this->getFileInfo()->getId();
}
/**
* @return array
*/
public function stat() {
return $this->view->stat($this->path);
}
/**
* @return int
* @throws InvalidPathException
* @throws NotFoundException
*/
public function getMTime() {
return $this->getFileInfo()->getMTime();
}
/**
* @return int
* @throws InvalidPathException
* @throws NotFoundException
*/
public function getSize() {
return $this->getFileInfo()->getSize();
}
/**
* @return string
* @throws InvalidPathException
* @throws NotFoundException
*/
public function getEtag() {
return $this->getFileInfo()->getEtag();
}
/**
* @return int
* @throws InvalidPathException
* @throws NotFoundException
*/
public function getPermissions() {
return $this->getFileInfo()->getPermissions();
}
/**
* @return bool
* @throws InvalidPathException
* @throws NotFoundException
*/
public function isReadable() {
return $this->getFileInfo()->isReadable();
}
/**
* @return bool
* @throws InvalidPathException
* @throws NotFoundException
*/
public function isUpdateable() {
return $this->getFileInfo()->isUpdateable();
}
/**
* @return bool
* @throws InvalidPathException
* @throws NotFoundException
*/
public function isDeletable() {
return $this->getFileInfo()->isDeletable();
}
/**
* @return bool
* @throws InvalidPathException
* @throws NotFoundException
*/
public function isShareable() {
return $this->getFileInfo()->isShareable();
}
/**
* @return bool
* @throws InvalidPathException
* @throws NotFoundException
*/
public function isCreatable() {
return $this->getFileInfo()->isCreatable();
}
/**
* @return Node
*/
public function getParent() {
$newPath = dirname($this->path);
if ($newPath === '' || $newPath === '.' || $newPath === '/') {
return $this->root;
}
return $this->root->get($newPath);
}
/**
* @return string
*/
public function getName() {
return basename($this->path);
}
/**
* @param string $path
* @return string
*/
protected function normalizePath($path) {
if ($path === '' or $path === '/') {
return '/';
}
//no windows style slashes
$path = str_replace('\\', '/', $path);
//add leading slash
if ($path[0] !== '/') {
$path = '/' . $path;
}
//remove duplicate slashes
while (strpos($path, '//') !== false) {
$path = str_replace('//', '/', $path);
}
//remove trailing slash
$path = rtrim($path, '/');
return $path;
}
/**
* check if the requested path is valid
*
* @param string $path
* @return bool
*/
public function isValidPath($path) {
if (!$path || $path[0] !== '/') {
$path = '/' . $path;
}
if (strstr($path, '/../') || strrchr($path, '/') === '/..') {
return false;
}
return true;
}
public function isMounted() {
return $this->getFileInfo()->isMounted();
}
public function isShared() {
return $this->getFileInfo()->isShared();
}
public function getMimeType() {
return $this->getFileInfo()->getMimetype();
}
public function getMimePart() {
return $this->getFileInfo()->getMimePart();
}
public function getType() {
return $this->getFileInfo()->getType();
}
public function isEncrypted() {
return $this->getFileInfo()->isEncrypted();
}
public function getMountPoint() {
return $this->getFileInfo()->getMountPoint();
}
public function getOwner() {
return $this->getFileInfo()->getOwner();
}
public function getChecksum() {
return;
}
/**
* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
* @throws \OCP\Lock\LockedException
*/
public function lock($type) {
$this->view->lockFile($this->path, $type);
}
/**
* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
* @throws \OCP\Lock\LockedException
*/
public function changeLock($type) {
$this->view->changeLock($this->path, $type);
}
/**
* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
* @throws \OCP\Lock\LockedException
*/
public function unlock($type) {
$this->view->unlockFile($this->path, $type);
}
/**
* @param string $targetPath
* @throws \OCP\Files\NotPermittedException if copy not allowed or failed
* @return \OC\Files\Node\Node
*/
public function copy($targetPath) {
$targetPath = $this->normalizePath($targetPath);
$parent = $this->root->get(dirname($targetPath));
if ($parent instanceof Folder and $this->isValidPath($targetPath) and $parent->isCreatable()) {
$nonExisting = $this->createNonExistingNode($targetPath);
$this->root->emit('\OC\Files', 'preCopy', [$this, $nonExisting]);
$this->root->emit('\OC\Files', 'preWrite', [$nonExisting]);
if (!$this->view->copy($this->path, $targetPath)) {
throw new NotPermittedException('Could not copy ' . $this->path . ' to ' . $targetPath);
}
$targetNode = $this->root->get($targetPath);
$this->root->emit('\OC\Files', 'postCopy', [$this, $targetNode]);
$this->root->emit('\OC\Files', 'postWrite', [$targetNode]);
return $targetNode;
} else {
throw new NotPermittedException('No permission to copy to path ' . $targetPath);
}
}
/**
* @param string $targetPath
* @throws \OCP\Files\NotPermittedException if move not allowed or failed
* @return \OC\Files\Node\Node
*/
public function move($targetPath) {
$targetPath = $this->normalizePath($targetPath);
$parent = $this->root->get(dirname($targetPath));
if ($parent instanceof Folder and $this->isValidPath($targetPath) and $parent->isCreatable()) {
$nonExisting = $this->createNonExistingNode($targetPath);
$this->root->emit('\OC\Files', 'preRename', [$this, $nonExisting]);
$this->root->emit('\OC\Files', 'preWrite', [$nonExisting]);
if (!$this->view->rename($this->path, $targetPath)) {
throw new NotPermittedException('Could not move ' . $this->path . ' to ' . $targetPath);
}
$targetNode = $this->root->get($targetPath);
$this->root->emit('\OC\Files', 'postRename', [$this, $targetNode]);
$this->root->emit('\OC\Files', 'postWrite', [$targetNode]);
$this->path = $targetPath;
return $targetNode;
} else {
throw new NotPermittedException('No permission to move to path ' . $targetPath);
}
}
}
|