256 lines
7.3 KiB
PHP
256 lines
7.3 KiB
PHP
<?php
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/**
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* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
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* @author Joas Schilling <nickvergessen@owncloud.com>
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* @author Vincent Petry <pvince81@owncloud.com>
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*
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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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\Comments;
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use OCP\Comments\IComment;
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use OCP\Comments\ICommentsManager;
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use OCP\IUserSession;
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use Sabre\DAV\Exception\BadRequest;
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use Sabre\DAV\Exception\ReportNotSupported;
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use Sabre\DAV\Exception\UnsupportedMediaType;
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use Sabre\DAV\Exception\NotFound;
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use Sabre\DAV\Server;
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use Sabre\DAV\ServerPlugin;
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use Sabre\DAV\Xml\Element\Response;
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use Sabre\DAV\Xml\Response\MultiStatus;
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use Sabre\HTTP\RequestInterface;
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use Sabre\HTTP\ResponseInterface;
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use Sabre\Xml\Writer;
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/**
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* Sabre plugin to handle comments:
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*/
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class CommentsPlugin extends ServerPlugin {
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// namespace
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const NS_OWNCLOUD = 'http://owncloud.org/ns';
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const REPORT_NAME = '{http://owncloud.org/ns}filter-comments';
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const REPORT_PARAM_LIMIT = '{http://owncloud.org/ns}limit';
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const REPORT_PARAM_OFFSET = '{http://owncloud.org/ns}offset';
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const REPORT_PARAM_TIMESTAMP = '{http://owncloud.org/ns}datetime';
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/** @var ICommentsManager */
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protected $commentsManager;
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/** @var \Sabre\DAV\Server $server */
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private $server;
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/** @var \OCP\IUserSession */
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protected $userSession;
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/**
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* Comments plugin
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*
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* @param ICommentsManager $commentsManager
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* @param IUserSession $userSession
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*/
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public function __construct(ICommentsManager $commentsManager, IUserSession $userSession) {
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$this->commentsManager = $commentsManager;
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$this->userSession = $userSession;
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}
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/**
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* This initializes the plugin.
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*
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* This function is called by Sabre\DAV\Server, after
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* addPlugin is called.
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*
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* This method should set up the required event subscriptions.
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*
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* @param Server $server
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* @return void
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*/
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function initialize(Server $server) {
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$this->server = $server;
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if(strpos($this->server->getRequestUri(), 'comments/') !== 0) {
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return;
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}
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$this->server->xml->namespaceMap[self::NS_OWNCLOUD] = 'oc';
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$this->server->xml->classMap['DateTime'] = function(Writer $writer, \DateTime $value) {
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$writer->write(\Sabre\HTTP\toDate($value));
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};
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$this->server->on('report', [$this, 'onReport']);
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$this->server->on('method:POST', [$this, 'httpPost']);
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}
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/**
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* POST operation on Comments collections
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*
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* @param RequestInterface $request request object
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* @param ResponseInterface $response response object
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* @return null|false
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*/
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public function httpPost(RequestInterface $request, ResponseInterface $response) {
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$path = $request->getPath();
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$node = $this->server->tree->getNodeForPath($path);
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if (!$node instanceof EntityCollection) {
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return null;
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}
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$data = $request->getBodyAsString();
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$comment = $this->createComment(
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$node->getName(),
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$node->getId(),
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$data,
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$request->getHeader('Content-Type')
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);
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// update read marker for the current user/poster to avoid
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// having their own comments marked as unread
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$node->setReadMarker(null);
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$url = rtrim($request->getUrl(), '/') . '/' . urlencode($comment->getId());
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$response->setHeader('Content-Location', $url);
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// created
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$response->setStatus(201);
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return false;
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}
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/**
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* Returns a list of reports this plugin supports.
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*
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* This will be used in the {DAV:}supported-report-set property.
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*
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* @param string $uri
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* @return array
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*/
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public function getSupportedReportSet($uri) {
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return [self::REPORT_NAME];
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}
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/**
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* REPORT operations to look for comments
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*
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* @param string $reportName
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* @param [] $report
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* @param string $uri
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* @return bool
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* @throws NotFound
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* @throws ReportNotSupported
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*/
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public function onReport($reportName, $report, $uri) {
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$node = $this->server->tree->getNodeForPath($uri);
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if(!$node instanceof EntityCollection || $reportName !== self::REPORT_NAME) {
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throw new ReportNotSupported();
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}
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$args = ['limit' => 0, 'offset' => 0, 'datetime' => null];
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$acceptableParameters = [
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$this::REPORT_PARAM_LIMIT,
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$this::REPORT_PARAM_OFFSET,
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$this::REPORT_PARAM_TIMESTAMP
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];
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$ns = '{' . $this::NS_OWNCLOUD . '}';
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foreach($report as $parameter) {
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if(!in_array($parameter['name'], $acceptableParameters) || empty($parameter['value'])) {
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continue;
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}
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$args[str_replace($ns, '', $parameter['name'])] = $parameter['value'];
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}
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if(!is_null($args['datetime'])) {
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$args['datetime'] = new \DateTime($args['datetime']);
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}
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$results = $node->findChildren($args['limit'], $args['offset'], $args['datetime']);
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$responses = [];
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foreach($results as $node) {
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$nodePath = $this->server->getRequestUri() . '/' . $node->comment->getId();
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$resultSet = $this->server->getPropertiesForPath($nodePath, CommentNode::getPropertyNames());
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if(isset($resultSet[0]) && isset($resultSet[0][200])) {
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$responses[] = new Response(
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$this->server->getBaseUri() . $nodePath,
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[200 => $resultSet[0][200]],
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200
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);
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}
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}
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$xml = $this->server->xml->write(
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'{DAV:}multistatus',
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new MultiStatus($responses)
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);
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$this->server->httpResponse->setStatus(207);
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$this->server->httpResponse->setHeader('Content-Type', 'application/xml; charset=utf-8');
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$this->server->httpResponse->setBody($xml);
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return false;
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}
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/**
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* Creates a new comment
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*
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* @param string $objectType e.g. "files"
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* @param string $objectId e.g. the file id
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* @param string $data JSON encoded string containing the properties of the tag to create
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* @param string $contentType content type of the data
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* @return IComment newly created comment
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*
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* @throws BadRequest if a field was missing
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* @throws UnsupportedMediaType if the content type is not supported
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*/
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private function createComment($objectType, $objectId, $data, $contentType = 'application/json') {
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if (explode(';', $contentType)[0] === 'application/json') {
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$data = json_decode($data, true);
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} else {
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throw new UnsupportedMediaType();
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}
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$actorType = $data['actorType'];
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$actorId = null;
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if($actorType === 'users') {
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$user = $this->userSession->getUser();
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if(!is_null($user)) {
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$actorId = $user->getUID();
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}
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}
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if(is_null($actorId)) {
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throw new BadRequest('Invalid actor "' . $actorType .'"');
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}
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try {
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$comment = $this->commentsManager->create($actorType, $actorId, $objectType, $objectId);
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$comment->setMessage($data['message']);
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$comment->setVerb($data['verb']);
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$this->commentsManager->save($comment);
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return $comment;
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} catch (\InvalidArgumentException $e) {
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throw new BadRequest('Invalid input values', 0, $e);
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} catch (\OCP\Comments\MessageTooLongException $e) {
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$msg = 'Message exceeds allowed character limit of ';
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throw new BadRequest($msg . \OCP\Comments\IComment::MAX_MESSAGE_LENGTH, 0, $e);
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}
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}
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}
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