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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Robin Appelman <robin@icewind.nl>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @author Stefan Weil <sw@weilnetz.de>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @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\DAV\Connector\Sabre;
use OCA\DAV\Connector\Sabre\Exception\FileLocked;
use OCP\Lock\ILockingProvider;
use OCP\Lock\LockedException;
use Sabre\DAV\Exception\NotFound;
use Sabre\DAV\ServerPlugin;
use Sabre\HTTP\RequestInterface;
class LockPlugin extends ServerPlugin {
/**
* Reference to main server object
*
* @var \Sabre\DAV\Server
*/
private $server;
/**
* {@inheritdoc}
*/
public function initialize(\Sabre\DAV\Server $server) {
$this->server = $server;
$this->server->on('beforeMethod', [$this, 'getLock'], 50);
$this->server->on('afterMethod', [$this, 'releaseLock'], 50);
}
public function getLock(RequestInterface $request) {
// we can't listen on 'beforeMethod:PUT' due to order of operations with setting up the tree
// so instead we limit ourselves to the PUT method manually
if ($request->getMethod() !== 'PUT' || isset($_SERVER['HTTP_OC_CHUNKED'])) {
return;
}
try {
$node = $this->server->tree->getNodeForPath($request->getPath());
} catch (NotFound $e) {
return;
}
if ($node instanceof Node) {
try {
$node->acquireLock(ILockingProvider::LOCK_SHARED);
} catch (LockedException $e) {
throw new FileLocked($e->getMessage(), $e->getCode(), $e);
}
}
}
public function releaseLock(RequestInterface $request) {
if ($request->getMethod() !== 'PUT' || isset($_SERVER['HTTP_OC_CHUNKED'])) {
return;
}
try {
$node = $this->server->tree->getNodeForPath($request->getPath());
} catch (NotFound $e) {
return;
}
if ($node instanceof Node) {
$node->releaseLock(ILockingProvider::LOCK_SHARED);
}
}
}