102 lines
2.8 KiB
PHP
102 lines
2.8 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Georg Ehrke <oc.list@georgehrke.com>
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* @author Jaakko Salo <jaakkos@gmail.com>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author Stefan Weil <sw@weilnetz.de>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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*
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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 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\NotFound;
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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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* State of the lock
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*
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* @var bool
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*/
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private $isLocked;
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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->isLocked = false;
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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' || isset($_SERVER['HTTP_OC_CHUNKED'])) {
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return;
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}
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try {
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$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(), $e);
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}
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$this->isLocked = true;
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}
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}
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public function releaseLock(RequestInterface $request) {
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// don't try to release the lock if we never locked one
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if ($this->isLocked === false) {
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return;
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}
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if ($request->getMethod() !== 'PUT' || isset($_SERVER['HTTP_OC_CHUNKED'])) {
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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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$node->releaseLock(ILockingProvider::LOCK_SHARED);
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$this->isLocked = false;
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}
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}
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}
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