120 lines
3.2 KiB
PHP
120 lines
3.2 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 Arthur Schiwon <blizzz@arthur-schiwon.de>
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* @author Christoph Wurst <christoph@winzerhof-wurst.at>
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* @author Lukas Reschke <lukas@statuscode.ch>
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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\Files;
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use OC\AppFramework\Http\Request;
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use OC_Template;
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use OCP\AppFramework\Http\ContentSecurityPolicy;
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use OCP\IRequest;
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use Sabre\DAV\Exception;
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use Sabre\DAV\Server;
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use Sabre\DAV\ServerPlugin;
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class BrowserErrorPagePlugin extends ServerPlugin {
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/** @var Server */
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private $server;
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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 = $server;
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$server->on('exception', [$this, 'logException'], 1000);
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}
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/**
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* @param IRequest $request
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* @return bool
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*/
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public static function isBrowserRequest(IRequest $request) {
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if ($request->getMethod() !== 'GET') {
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return false;
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}
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return $request->isUserAgent([
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Request::USER_AGENT_IE,
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Request::USER_AGENT_MS_EDGE,
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Request::USER_AGENT_CHROME,
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Request::USER_AGENT_FIREFOX,
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Request::USER_AGENT_SAFARI,
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]);
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}
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/**
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* @param \Exception $ex
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*/
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public function logException(\Exception $ex) {
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if ($ex instanceof Exception) {
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$httpCode = $ex->getHTTPCode();
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$headers = $ex->getHTTPHeaders($this->server);
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} else {
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$httpCode = 500;
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$headers = [];
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}
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$this->server->httpResponse->addHeaders($headers);
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$this->server->httpResponse->setStatus($httpCode);
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$body = $this->generateBody($httpCode);
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$this->server->httpResponse->setBody($body);
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$csp = new ContentSecurityPolicy();
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$this->server->httpResponse->addHeader('Content-Security-Policy', $csp->buildPolicy());
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$this->sendResponse();
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}
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/**
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* @codeCoverageIgnore
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* @return bool|string
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*/
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public function generateBody(int $httpCode) {
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$request = \OC::$server->getRequest();
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$templateName = 'exception';
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if($httpCode === 403 || $httpCode === 404) {
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$templateName = (string)$httpCode;
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}
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$content = new OC_Template('core', $templateName, 'guest');
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$content->assign('title', $this->server->httpResponse->getStatusText());
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$content->assign('remoteAddr', $request->getRemoteAddress());
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$content->assign('requestID', $request->getId());
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return $content->fetchPage();
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}
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/**
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* @codeCoverageIgnore
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*/
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public function sendResponse() {
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$this->server->sapi->sendResponse($this->server->httpResponse);
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exit();
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}
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}
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