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
|
<?php
/**
* @author Björn Schießle <schiessle@owncloud.com>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <icewind@owncloud.com>
* @author Robin McCorkell <robin@mccorkell.me.uk>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @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 OC\Files\Mount;
use \OC\Files\Filesystem;
use OC\Files\Storage\StorageFactory;
use OC\Files\Storage\Storage;
use OCP\Files\Mount\IMountPoint;
class MountPoint implements IMountPoint {
/**
* @var \OC\Files\Storage\Storage $storage
*/
protected $storage = null;
protected $class;
protected $storageId;
/**
* Configuration options for the storage backend
*
* @var array
*/
protected $arguments = array();
protected $mountPoint;
/**
* Mount specific options
*
* @var array
*/
protected $mountOptions = array();
/**
* @var \OC\Files\Storage\StorageFactory $loader
*/
private $loader;
/**
* Specified whether the storage is invalid after failing to
* instantiate it.
*
* @var bool
*/
private $invalidStorage = false;
/**
* @param string|\OC\Files\Storage\Storage $storage
* @param string $mountpoint
* @param array $arguments (optional) configuration for the storage backend
* @param \OCP\Files\Storage\IStorageFactory $loader
* @param array $mountOptions mount specific options
*/
public function __construct($storage, $mountpoint, $arguments = null, $loader = null, $mountOptions = null) {
if (is_null($arguments)) {
$arguments = array();
}
if (is_null($loader)) {
$this->loader = new StorageFactory();
} else {
$this->loader = $loader;
}
if (!is_null($mountOptions)) {
$this->mountOptions = $mountOptions;
}
$mountpoint = $this->formatPath($mountpoint);
$this->mountPoint = $mountpoint;
if ($storage instanceof Storage) {
$this->class = get_class($storage);
$this->storage = $this->loader->wrap($this, $storage);
} else {
// Update old classes to new namespace
if (strpos($storage, 'OC_Filestorage_') !== false) {
$storage = '\OC\Files\Storage\\' . substr($storage, 15);
}
$this->class = $storage;
$this->arguments = $arguments;
}
}
/**
* get complete path to the mount point, relative to data/
*
* @return string
*/
public function getMountPoint() {
return $this->mountPoint;
}
/**
* Sets the mount point path, relative to data/
*
* @param string $mountPoint new mount point
*/
public function setMountPoint($mountPoint) {
$this->mountPoint = $this->formatPath($mountPoint);
}
/**
* create the storage that is mounted
*
* @return \OC\Files\Storage\Storage
*/
private function createStorage() {
if ($this->invalidStorage) {
return null;
}
if (class_exists($this->class)) {
try {
return $this->loader->getInstance($this, $this->class, $this->arguments);
} catch (\Exception $exception) {
$this->invalidStorage = true;
if ($this->mountPoint === '/') {
// the root storage could not be initialized, show the user!
throw new \Exception('The root storage could not be initialized. Please contact your local administrator.', $exception->getCode(), $exception);
} else {
\OCP\Util::writeLog('core', $exception->getMessage(), \OCP\Util::ERROR);
}
return null;
}
} else {
\OCP\Util::writeLog('core', 'storage backend ' . $this->class . ' not found', \OCP\Util::ERROR);
$this->invalidStorage = true;
return null;
}
}
/**
* @return \OC\Files\Storage\Storage
*/
public function getStorage() {
if (is_null($this->storage)) {
$this->storage = $this->createStorage();
}
return $this->storage;
}
/**
* @return string
*/
public function getStorageId() {
if (!$this->storageId) {
if (is_null($this->storage)) {
$storage = $this->createStorage(); //FIXME: start using exceptions
if (is_null($storage)) {
return null;
}
$this->storage = $storage;
}
$this->storageId = $this->storage->getId();
if (strlen($this->storageId) > 64) {
$this->storageId = md5($this->storageId);
}
}
return $this->storageId;
}
/**
* @param string $path
* @return string
*/
public function getInternalPath($path) {
if ($this->mountPoint === $path or $this->mountPoint . '/' === $path) {
$internalPath = '';
} else {
$internalPath = substr($path, strlen($this->mountPoint));
}
// substr returns false instead of an empty string, we always want a string
return (string)$internalPath;
}
/**
* @param string $path
* @return string
*/
private function formatPath($path) {
$path = Filesystem::normalizePath($path);
if (strlen($path) > 1) {
$path .= '/';
}
return $path;
}
/**
* @param callable $wrapper
*/
public function wrapStorage($wrapper) {
$storage = $this->getStorage();
// storage can be null if it couldn't be initialized
if ($storage != null) {
$this->storage = $wrapper($this->mountPoint, $storage, $this);
}
}
/**
* Get a mount option
*
* @param string $name Name of the mount option to get
* @param mixed $default Default value for the mount option
* @return mixed
*/
public function getOption($name, $default) {
return isset($this->mountOptions[$name]) ? $this->mountOptions[$name] : $default;
}
/**
* Get all options for the mount
*
* @return array
*/
public function getOptions() {
return $this->mountOptions;
}
/**
* Get the file id of the root of the storage
*
* @return int
*/
public function getStorageRootId() {
return (int)$this->getStorage()->getCache()->getId('');
}
}
|
