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<?php
/**
* ownCloud
*
* @copyright (C) 2015 ownCloud, Inc.
*
* @author Bjoern Schiessle <schiessle@owncloud.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library 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 along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
namespace OC\Encryption;
use OC\Files\Storage\Wrapper\Encryption;
use OCP\Encryption\IEncryptionModule;
use OCP\Files\Mount\IMountPoint;
class Manager implements \OCP\Encryption\IManager {
/** @var array */
protected $encryptionModules;
/** @var \OCP\IConfig */
protected $config;
/**
* @param \OCP\IConfig $config
*/
public function __construct(\OCP\IConfig $config) {
$this->encryptionModules = array();
$this->config = $config;
}
/**
* Check if encryption is enabled
*
* @return bool true if enabled, false if not
*/
public function isEnabled() {
$installed = $this->config->getSystemValue('installed', false);
if (!$installed) {
return false;
}
$enabled = $this->config->getAppValue('core', 'encryption_enabled', 'no');
return $enabled === 'yes';
}
/**
* Registers an encryption module
*
* @param IEncryptionModule $module
* @throws Exceptions\ModuleAlreadyExistsException
*/
public function registerEncryptionModule(IEncryptionModule $module) {
$id = $module->getId();
$name = $module->getDisplayName();
if (isset($this->encryptionModules[$id])) {
throw new Exceptions\ModuleAlreadyExistsException($id, $name);
}
$defaultEncryptionModuleId = $this->getDefaultEncryptionModuleId();
if (empty($defaultEncryptionModuleId)) {
$this->setDefaultEncryptionModule($id);
}
$this->encryptionModules[$id] = $module;
}
/**
* Unregisters an encryption module
*
* @param IEncryptionModule $module
*/
public function unregisterEncryptionModule(IEncryptionModule $module) {
unset($this->encryptionModules[$module->getId()]);
}
/**
* get a list of all encryption modules
*
* @return IEncryptionModule[]
*/
public function getEncryptionModules() {
return $this->encryptionModules;
}
/**
* get a specific encryption module
*
* @param string $moduleId
* @return IEncryptionModule
* @throws Exceptions\ModuleDoesNotExistsException
*/
public function getEncryptionModule($moduleId = '') {
if (!empty($moduleId)) {
if (isset($this->encryptionModules[$moduleId])) {
return $this->encryptionModules[$moduleId];
} else {
$message = "Module with id: $moduleId does not exists.";
throw new Exceptions\ModuleDoesNotExistsException($message);
}
} else { // get default module and return this
// For now we simply return the first module until we have a way
// to enable multiple modules and define a default module
$module = reset($this->encryptionModules);
if ($module) {
return $module;
} else {
$message = 'No encryption module registered';
throw new Exceptions\ModuleDoesNotExistsException($message);
}
}
}
/**
* get default encryption module
*
* @return \OCP\Encryption\IEncryptionModule
* @throws Exceptions\ModuleDoesNotExistsException
*/
public function getDefaultEncryptionModule() {
$defaultModuleId = $this->getDefaultEncryptionModuleId();
if (!empty($defaultModuleId)) {
if (isset($this->encryptionModules[$defaultModuleId])) {
return $this->encryptionModules[$defaultModuleId];
} else {
$message = 'Default encryption module not loaded';
throw new Exceptions\ModuleDoesNotExistsException($message);
}
} else {
$message = 'No default encryption module defined';
throw new Exceptions\ModuleDoesNotExistsException($message);
}
}
/**
* set default encryption module Id
*
* @param string $moduleId
* @return bool
*/
public function setDefaultEncryptionModule($moduleId) {
try {
$this->config->setAppValue('core', 'default_encryption_module', $moduleId);
return true;
} catch (\Exception $e) {
return false;
}
}
/**
* get default encryption module Id
*
* @return string
*/
protected function getDefaultEncryptionModuleId() {
try {
return $this->config->getAppValue('core', 'default_encryption_module');
} catch (\Exception $e) {
return '';
}
}
public static function setupStorage() {
\OC\Files\Filesystem::addStorageWrapper('oc_encryption', function ($mountPoint, $storage, IMountPoint $mount) {
$parameters = [
'storage' => $storage,
'mountPoint' => $mountPoint,
'mount' => $mount];
$manager = \OC::$server->getEncryptionManager();
$util = new \OC\Encryption\Util(
new \OC\Files\View(),
\OC::$server->getUserManager(),
\OC::$server->getConfig());
$user = \OC::$server->getUserSession()->getUser();
$logger = \OC::$server->getLogger();
$uid = $user ? $user->getUID() : null;
$fileHelper = \OC::$server->getEncryptionFilesHelper();
return new Encryption($parameters, $manager, $util, $logger, $fileHelper, $uid);
});
}
}
|
