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
|
<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Andreas Fischer <bantu@owncloud.com>
* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
* @author Bart Visscher <bartv@thisnet.nl>
* @author Björn Schießle <bjoern@schiessle.org>
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Frank Karlitschek <frank@karlitschek.de>
* @author Jesús Macias <jmacias@solidgear.es>
* @author Joas Schilling <coding@schilljs.com>
* @author Juan Pablo Villafáñez <jvillafanez@solidgear.es>
* @author Julius Härtl <jus@bitgrid.net>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Michael Gapczynski <GapczynskiM@gmail.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Philipp Kapfer <philipp.kapfer@gmx.at>
* @author Robin Appelman <robin@icewind.nl>
* @author Robin McCorkell <robin@mccorkell.me.uk>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Vincent Petry <vincent@nextcloud.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 OCA\Files_External;
use OCA\Files_External\Config\IConfigHandler;
use OCA\Files_External\Config\UserContext;
use OCA\Files_External\Lib\Backend\Backend;
use OCA\Files_External\Service\BackendService;
use OCA\Files_External\Service\GlobalStoragesService;
use OCA\Files_External\Service\UserGlobalStoragesService;
use OCA\Files_External\Service\UserStoragesService;
use OCP\Files\StorageNotAvailableException;
use OCP\IUser;
use phpseclib\Crypt\AES;
/**
* Class to configure mount.json globally and for users
*/
class MountConfig {
// TODO: make this class non-static and give it a proper namespace
public const MOUNT_TYPE_GLOBAL = 'global';
public const MOUNT_TYPE_GROUP = 'group';
public const MOUNT_TYPE_USER = 'user';
public const MOUNT_TYPE_PERSONAL = 'personal';
// whether to skip backend test (for unit tests, as this static class is not mockable)
public static $skipTest = false;
/** @var UserGlobalStoragesService */
private $userGlobalStorageService;
/** @var UserStoragesService */
private $userStorageService;
/** @var GlobalStoragesService */
private $globalStorageService;
public function __construct(
UserGlobalStoragesService $userGlobalStorageService,
UserStoragesService $userStorageService,
GlobalStoragesService $globalStorageService
) {
$this->userGlobalStorageService = $userGlobalStorageService;
$this->userStorageService = $userStorageService;
$this->globalStorageService = $globalStorageService;
}
/**
* @param mixed $input
* @param string|null $userId
* @return mixed
* @throws \OCP\AppFramework\QueryException
* @since 16.0.0
*/
public static function substitutePlaceholdersInConfig($input, string $userId = null) {
/** @var BackendService $backendService */
$backendService = \OC::$server->get(BackendService::class);
/** @var IConfigHandler[] $handlers */
$handlers = $backendService->getConfigHandlers();
foreach ($handlers as $handler) {
if ($handler instanceof UserContext && $userId !== null) {
$handler->setUserId($userId);
}
$input = $handler->handle($input);
}
return $input;
}
/**
* Test connecting using the given backend configuration
*
* @param string $class backend class name
* @param array $options backend configuration options
* @param boolean $isPersonal
* @return int see self::STATUS_*
* @throws \Exception
*/
public static function getBackendStatus($class, $options, $isPersonal, $testOnly = true) {
if (self::$skipTest) {
return StorageNotAvailableException::STATUS_SUCCESS;
}
foreach ($options as $key => &$option) {
if ($key === 'password') {
// no replacements in passwords
continue;
}
$option = self::substitutePlaceholdersInConfig($option);
}
if (class_exists($class)) {
try {
/** @var \OC\Files\Storage\Common $storage */
$storage = new $class($options);
try {
$result = $storage->test($isPersonal, $testOnly);
$storage->setAvailability($result);
if ($result) {
return StorageNotAvailableException::STATUS_SUCCESS;
}
} catch (\Exception $e) {
$storage->setAvailability(false);
throw $e;
}
} catch (\Exception $exception) {
\OC::$server->getLogger()->logException($exception, ['app' => 'files_external']);
throw $exception;
}
}
return StorageNotAvailableException::STATUS_ERROR;
}
/**
* Get backend dependency message
* TODO: move into AppFramework along with templates
*
* @param Backend[] $backends
* @return string
*/
public static function dependencyMessage($backends) {
$l = \OC::$server->getL10N('files_external');
$message = '';
$dependencyGroups = [];
foreach ($backends as $backend) {
foreach ($backend->checkDependencies() as $dependency) {
if ($message = $dependency->getMessage()) {
$message .= '<p>' . $message . '</p>';
} else {
$dependencyGroups[$dependency->getDependency()][] = $backend;
}
}
}
foreach ($dependencyGroups as $module => $dependants) {
$backends = implode(', ', array_map(function ($backend) {
return '"' . $backend->getText() . '"';
}, $dependants));
$message .= '<p>' . MountConfig::getSingleDependencyMessage($l, $module, $backends) . '</p>';
}
return $message;
}
/**
* Returns a dependency missing message
*
* @param \OCP\IL10N $l
* @param string $module
* @param string $backend
* @return string
*/
private static function getSingleDependencyMessage(\OCP\IL10N $l, $module, $backend) {
switch (strtolower($module)) {
case 'curl':
return $l->t('The cURL support in PHP is not enabled or installed. Mounting of %s is not possible. Please ask your system administrator to install it.', [$backend]);
case 'ftp':
return $l->t('The FTP support in PHP is not enabled or installed. Mounting of %s is not possible. Please ask your system administrator to install it.', [$backend]);
default:
return $l->t('"%1$s" is not installed. Mounting of %2$s is not possible. Please ask your system administrator to install it.', [$module, $backend]);
}
}
/**
* Encrypt passwords in the given config options
*
* @param array $options mount options
* @return array updated options
*/
public static function encryptPasswords($options) {
if (isset($options['password'])) {
$options['password_encrypted'] = self::encryptPassword($options['password']);
// do not unset the password, we want to keep the keys order
// on load... because that's how the UI currently works
$options['password'] = '';
}
return $options;
}
/**
* Decrypt passwords in the given config options
*
* @param array $options mount options
* @return array updated options
*/
public static function decryptPasswords($options) {
// note: legacy options might still have the unencrypted password in the "password" field
if (isset($options['password_encrypted'])) {
$options['password'] = self::decryptPassword($options['password_encrypted']);
unset($options['password_encrypted']);
}
return $options;
}
/**
* Encrypt a single password
*
* @param string $password plain text password
* @return string encrypted password
*/
private static function encryptPassword($password) {
$cipher = self::getCipher();
$iv = \OC::$server->getSecureRandom()->generate(16);
$cipher->setIV($iv);
return base64_encode($iv . $cipher->encrypt($password));
}
/**
* Decrypts a single password
*
* @param string $encryptedPassword encrypted password
* @return string plain text password
*/
private static function decryptPassword($encryptedPassword) {
$cipher = self::getCipher();
$binaryPassword = base64_decode($encryptedPassword);
$iv = substr($binaryPassword, 0, 16);
$cipher->setIV($iv);
$binaryPassword = substr($binaryPassword, 16);
return $cipher->decrypt($binaryPassword);
}
/**
* Returns the encryption cipher
*
* @return AES
*/
private static function getCipher() {
$cipher = new AES(AES::MODE_CBC);
$cipher->setKey(\OC::$server->getConfig()->getSystemValue('passwordsalt', null));
return $cipher;
}
/**
* Computes a hash based on the given configuration.
* This is mostly used to find out whether configurations
* are the same.
*
* @param array $config
* @return string
*/
public static function makeConfigHash($config) {
$data = json_encode(
[
'c' => $config['backend'],
'a' => $config['authMechanism'],
'm' => $config['mountpoint'],
'o' => $config['options'],
'p' => isset($config['priority']) ? $config['priority'] : -1,
'mo' => isset($config['mountOptions']) ? $config['mountOptions'] : [],
]
);
return hash('md5', $data);
}
}
|