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This change will help users to recreate masterkey for encryption. Signed-off-by: Sujith H <sharidasan@owncloud.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,261 @@ | ||
| <?php | ||
| /** | ||
| * @author Sujith Haridasan <sharidasan@owncloud.com> | ||
| * | ||
| * @copyright Copyright (c) 2017, ownCloud GmbH | ||
| * @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\Encryption\Controller; | ||
|
|
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| use OC\Encryption\Exceptions\DecryptionFailedException; | ||
| use OC\Encryption\Manager; | ||
| use OC\Files\View; | ||
| use OCA\Encryption\KeyManager; | ||
| use OCA\Encryption\Util; | ||
| use OCP\AppFramework\Controller; | ||
| use OCP\IRequest; | ||
| use OCP\IUserManager; | ||
|
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|
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| class MasterKeyController extends Controller { | ||
|
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| /** @var Manager */ | ||
| private $encryptionManager; | ||
|
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| /** @var IUserManager */ | ||
| private $userManager; | ||
|
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| /** @var View */ | ||
| private $rootView; | ||
|
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| /** @var KeyManager */ | ||
| private $keyManager; | ||
|
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| /** @var Util */ | ||
| private $util; | ||
|
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| /** @var array files which couldn't be decrypted */ | ||
| protected $failed; | ||
|
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|
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| /** | ||
| * MasterKeyController constructor. | ||
| * | ||
| * @param string $appName | ||
| * @param IRequest $request | ||
| * @param Manager $encryptionManager | ||
| * @param IUserManager $userManager | ||
| * @param View $rootView | ||
| * @param KeyManager $keyManager | ||
| * @param Util $util | ||
| */ | ||
| public function __construct( | ||
| $appName, IRequest $request, Manager $encryptionManager, | ||
| IUserManager $userManager, View $rootView, | ||
| KeyManager $keyManager, Util $util) { | ||
| parent::__construct($appName, $request); | ||
| $this->encryptionManager = $encryptionManager; | ||
| $this->userManager = $userManager; | ||
| $this->rootView = $rootView; | ||
| $this->keyManager = $keyManager; | ||
| $this->util = $util; | ||
| } | ||
|
|
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| public function createNewMasterKey() { | ||
| \OC::$server->getLogger()->warning(__METHOD__." so time to create new key!!!", ['app' => __CLASS__]); | ||
| // First decrypt the users files | ||
| $this->decryptAllUsersFiles(); | ||
|
|
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| if (empty($this->failed)) { | ||
| //Now recreate new encryption | ||
| //Delete the encryption app | ||
| \OC::$server->getAppConfig()->deleteApp('encryption'); | ||
| //Delete the files_encryption dir | ||
| $this->rootView->deleteAll('files_encryption'); | ||
| \OC::$server->getConfig()->deleteAppValue('files_encryption','installed_version'); | ||
| \OC::$server->getConfig()->deleteAppValues('encryption'); | ||
|
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| //Re-enable the encryption app | ||
| \OC_App::enable('encryption'); | ||
| //Set masterkey it. | ||
| \OC::$server->getAppConfig()->setValue('encryption','useMasterKey', '1'); | ||
| } | ||
|
|
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| } | ||
|
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| public function reencryptFiles() { | ||
| //Now encrypt FS again | ||
| $this->keyManager->validateMasterKey(); | ||
| $this->encryptAllUsersFiles(); | ||
| } | ||
|
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| public function encryptAllUsersFiles() { | ||
| $this->encryptAllUserFilesWithMasterKey(); | ||
| } | ||
|
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| public function encryptAllUserFilesWithMasterKey() { | ||
| $userNo = 1; | ||
| foreach($this->userManager->getBackends() as $backend) { | ||
| $limit = 500; | ||
| $offset = 0; | ||
| do { | ||
| $users = $backend->getUsers('', $limit, $offset); | ||
| foreach ($users as $user) { | ||
| echo "\n Entering user $user\n"; | ||
| $userCount = "$user ($userNo)"; | ||
| $this->encryptUsersFiles($user, $userCount); | ||
| $userNo++; | ||
| } | ||
| $offset += $limit; | ||
| } while(count($users) >= $limit); | ||
| } | ||
| } | ||
|
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| public function encryptUsersFiles($uid, $userCount) { | ||
|
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| $this->setupUserFS($uid); | ||
| $directories = []; | ||
| $directories[] = '/' . $uid . '/files'; | ||
|
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| while($root = array_pop($directories)) { | ||
| $content = $this->rootView->getDirectoryContent($root); | ||
| foreach ($content as $file) { | ||
| $path = $root . '/' . $file['name']; | ||
| if ($this->rootView->is_dir($path)) { | ||
| $directories[] = $path; | ||
| continue; | ||
| } else { | ||
| if($this->encryptFile($path) === false) { | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| public function encryptFile($path) { | ||
| $source = $path; | ||
| $target = $path . '.encrypted.' . time(); | ||
|
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| try { | ||
| \OC::$server->getSession()->set('encryptAllCmd', true); | ||
| $this->rootView->copy($source, $target); | ||
| $this->rootView->rename($target, $source); | ||
| \OC::$server->getSession()->set('encryptAllCmd', true); | ||
| } catch (DecryptionFailedException $e) { | ||
| if ($this->rootView->file_exists($target)) { | ||
| $this->rootView->unlink($target); | ||
| } | ||
| return false; | ||
| } | ||
|
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| return true; | ||
| } | ||
|
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| public function decryptAllUsersFiles() { | ||
| $userList = []; | ||
|
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| foreach ($this->userManager->getBackends() as $backend) { | ||
| $limit = 500; | ||
| $offset = 0; | ||
| do { | ||
| $users = $backend->getUsers('', $limit, $offset); | ||
| foreach ($users as $user) { | ||
| $userList[] = $user; | ||
| } | ||
| $offset += $limit; | ||
| } while (count($users) >= $limit); | ||
| } | ||
|
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| $numberOfUsers = count($userList); | ||
| $userNo = 1; | ||
| foreach ($userList as $uid) { | ||
| $userCount = "$uid ($userNo of $numberOfUsers)"; | ||
| $this->decryptUsersFiles($uid, $userCount); | ||
| $userNo++; | ||
| } | ||
| } | ||
|
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| public function decryptUsersFiles($uid, $userCount) { | ||
|
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| $this->setupUserFS($uid); | ||
| $directories = []; | ||
| $directories[] = '/' . $uid . '/files'; | ||
|
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| while ($root = array_pop($directories)) { | ||
| $content = $this->rootView->getDirectoryContent($root); | ||
| foreach ($content as $file) { | ||
| // only decrypt files owned by the user | ||
| if($file->getStorage()->instanceOfStorage('OCA\Files_Sharing\SharedStorage')) { | ||
| continue; | ||
| } | ||
| $path = $root . '/' . $file['name']; | ||
| if ($this->rootView->is_dir($path)) { | ||
| $directories[] = $path; | ||
| continue; | ||
| } else { | ||
| try { | ||
| if ($file->isEncrypted() === false) { | ||
| } else { | ||
| if ($this->decryptFile($path) === false) { | ||
| } | ||
| } | ||
| } catch (\Exception $e) { | ||
| if (isset($this->failed[$uid])) { | ||
| $this->failed[$uid][] = $path; | ||
| } else { | ||
| $this->failed[$uid] = [$path]; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| if (empty($this->failed)) { | ||
| $this->rootView->deleteAll("$uid/files_encryption"); | ||
| } | ||
| } | ||
|
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| protected function decryptFile($path) { | ||
|
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| $source = $path; | ||
| $target = $path . '.decrypted.' . $this->getTimestamp(); | ||
|
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| try { | ||
| \OC::$server->getSession()->set('decryptAllCmd', true); | ||
| $this->rootView->copy($source, $target); | ||
| $this->rootView->rename($target, $source); | ||
| \OC::$server->getSession()->remove('decryptAllCmd'); | ||
| } catch (DecryptionFailedException $e) { | ||
| if ($this->rootView->file_exists($target)) { | ||
| $this->rootView->unlink($target); | ||
| } | ||
| return false; | ||
| } | ||
|
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| return true; | ||
| } | ||
|
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| protected function getTimestamp() { | ||
| return time(); | ||
| } | ||
|
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|
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| protected function setupUserFS($uid) { | ||
| \OC_Util::tearDownFS(); | ||
| \OC_Util::setupFS($uid); | ||
| } | ||
| } |
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