161 lines
4.2 KiB
PHP
161 lines
4.2 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 Joas Schilling <coding@schilljs.com>
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* @author Lukas Reschke <lukas@statuscode.ch>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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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 Sabre\DAV\INode;
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use Sabre\DAV\Locks\LockInfo;
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use Sabre\DAV\PropFind;
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use Sabre\DAV\ServerPlugin;
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use Sabre\DAV\Xml\Property\LockDiscovery;
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use Sabre\DAV\Xml\Property\SupportedLock;
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use Sabre\HTTP\RequestInterface;
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use Sabre\HTTP\ResponseInterface;
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/**
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* Class FakeLockerPlugin is a plugin only used when connections come in from
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* OS X via Finder. The fake locking plugin does emulate Class 2 WebDAV support
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* (locking of files) which allows Finder to access the storage in write mode as
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* well.
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*
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* No real locking is performed, instead the plugin just returns always positive
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* responses.
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*
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* @see https://github.com/owncloud/core/issues/17732
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* @package OCA\DAV\Connector\Sabre
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*/
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class FakeLockerPlugin extends ServerPlugin {
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/** @var \Sabre\DAV\Server */
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private $server;
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/** {@inheritDoc} */
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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('method:LOCK', [$this, 'fakeLockProvider'], 1);
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$this->server->on('method:UNLOCK', [$this, 'fakeUnlockProvider'], 1);
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$server->on('propFind', [$this, 'propFind']);
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$server->on('validateTokens', [$this, 'validateTokens']);
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}
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/**
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* Indicate that we support LOCK and UNLOCK
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*
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* @param string $path
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* @return string[]
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*/
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public function getHTTPMethods($path) {
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return [
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'LOCK',
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'UNLOCK',
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];
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}
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/**
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* Indicate that we support locking
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*
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* @return integer[]
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*/
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function getFeatures() {
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return [2];
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}
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/**
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* Return some dummy response for PROPFIND requests with regard to locking
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*
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* @param PropFind $propFind
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* @param INode $node
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* @return void
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*/
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function propFind(PropFind $propFind, INode $node) {
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$propFind->handle('{DAV:}supportedlock', function () {
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return new SupportedLock(true);
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});
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$propFind->handle('{DAV:}lockdiscovery', function () use ($propFind) {
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return new LockDiscovery([]);
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});
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}
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/**
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* Mark a locking token always as valid
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*
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* @param RequestInterface $request
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* @param array $conditions
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*/
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public function validateTokens(RequestInterface $request, &$conditions) {
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foreach($conditions as &$fileCondition) {
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if(isset($fileCondition['tokens'])) {
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foreach($fileCondition['tokens'] as &$token) {
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if(isset($token['token'])) {
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if(substr($token['token'], 0, 16) === 'opaquelocktoken:') {
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$token['validToken'] = true;
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}
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}
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}
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}
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}
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}
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/**
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* Fakes a successful LOCK
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*
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* @param RequestInterface $request
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* @param ResponseInterface $response
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* @return bool
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*/
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public function fakeLockProvider(RequestInterface $request,
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ResponseInterface $response) {
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$lockInfo = new LockInfo();
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$lockInfo->token = md5($request->getPath());
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$lockInfo->uri = $request->getPath();
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$lockInfo->depth = \Sabre\DAV\Server::DEPTH_INFINITY;
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$lockInfo->timeout = 1800;
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$body = $this->server->xml->write('{DAV:}prop', [
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'{DAV:}lockdiscovery' =>
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new LockDiscovery([$lockInfo])
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]);
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$response->setStatus(200);
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$response->setBody($body);
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return false;
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}
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/**
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* Fakes a successful LOCK
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*
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* @param RequestInterface $request
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* @param ResponseInterface $response
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* @return bool
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*/
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public function fakeUnlockProvider(RequestInterface $request,
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ResponseInterface $response) {
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$response->setStatus(204);
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$response->setHeader('Content-Length', '0');
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return false;
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}
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}
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