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<?php |
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/** |
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* @author Robin Appelman <[email protected]> |
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* @author Roeland Jago Douma <[email protected]> |
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* @author Stefan Weil <[email protected]> |
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* @author Thomas Müller <[email protected]> |
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* |
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* @copyright Copyright (c) 2018, ownCloud GmbH |
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* @license AGPL-3.0 |
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* |
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* This code is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License, version 3, |
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* as published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public License, version 3, |
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* along with this program. If not, see <http://www.gnu.org/licenses/> |
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* |
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*/ |
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namespace OCA\DAV\Connector\Sabre; |
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use OC\Lock\Persistent\LockMapper; |
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use OCA\DAV\Connector\Sabre\Exception\FileLocked; |
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use OCP\Lock\ILockingProvider; |
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use OCP\Lock\LockedException; |
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use Sabre\DAV\Exception\Forbidden; |
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use Sabre\DAV\Exception\NotFound; |
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use Sabre\DAV\Exception\NotImplemented; |
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use Sabre\DAV\Locks\LockInfo; |
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use Sabre\DAV\ServerPlugin; |
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use Sabre\HTTP\RequestInterface; |
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class LockPlugin extends ServerPlugin { |
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/** |
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* Reference to main server object |
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* |
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* @var \Sabre\DAV\Server |
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*/ |
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private $server; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function initialize(\Sabre\DAV\Server $server) { |
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$this->server = $server; |
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$this->server->on('beforeMethod', [$this, 'getLock'], 50); |
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$this->server->on('afterMethod', [$this, 'releaseLock'], 50); |
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$this->server->on('beforeUnlock', [$this, 'beforeUnlock'], 20); |
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} |
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public function getLock(RequestInterface $request) { |
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// we can't listen on 'beforeMethod:PUT' due to order of operations with setting up the tree |
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// so instead we limit ourselves to the PUT method manually |
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if ($request->getMethod() !== 'PUT' || \OC_FileChunking::isWebdavChunk()) { |
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return; |
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} |
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try { |
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$node = $this->server->tree->getNodeForPath($request->getPath()); |
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} catch (NotFound $e) { |
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return; |
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} |
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if ($node instanceof Node) { |
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try { |
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$node->acquireLock(ILockingProvider::LOCK_SHARED); |
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} catch (LockedException $e) { |
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throw new FileLocked($e->getMessage(), $e->getCode(), $e); |
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} |
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} |
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} |
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public function releaseLock(RequestInterface $request) { |
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if ($request->getMethod() !== 'PUT' || \OC_FileChunking::isWebdavChunk()) { |
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return; |
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} |
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try { |
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$node = $this->server->tree->getNodeForPath($request->getPath()); |
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} catch (NotFound $e) { |
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return; |
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} |
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if ($node instanceof Node) { |
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$node->releaseLock(ILockingProvider::LOCK_SHARED); |
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} |
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} |
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/** |
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* @param $uri |
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* @param LockInfo $lock |
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* @throws Forbidden |
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* @throws \OCP\AppFramework\Db\DoesNotExistException |
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* @throws \OCP\AppFramework\Db\MultipleObjectsReturnedException |
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* @throws \OCP\AppFramework\QueryException |
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*/ |
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public function beforeUnlock($uri, LockInfo $lock) { |
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// no injection of LockMapper and UserSession below because this method |
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// is only triggered on UNLOCK which is a no that common operation. |
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/** @var LockMapper $mapper */ |
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$mapper = \OC::$server->query(LockMapper::class); |
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$lock = $mapper->getLockByToken($lock->token); |
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if ($lock === null || $lock->getOwnerAccountId() === null) { |
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return; |
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} |
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$currentUser = \OC::$server->getUserSession()->getUser(); |
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if ($currentUser === null || $lock->getOwnerAccountId() !== $currentUser->getAccountId()) { |
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throw new Forbidden(); |
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} |
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} |
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} |
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owncloud /
core
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