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<?php |
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/** |
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* @author Bernhard Posselt <[email protected]> |
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* @author Christoph Wurst <[email protected]> |
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* @author Lukas Reschke <[email protected]> |
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* @author Morris Jobke <[email protected]> |
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* @author Stefan Weil <[email protected]> |
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* |
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* @copyright Copyright (c) 2018, ownCloud GmbH |
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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 OC\AppFramework\Middleware\Security; |
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use OC\AppFramework\Middleware\Security\Exceptions\SecurityException; |
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use OC\AppFramework\Utility\ControllerMethodReflector; |
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use OCP\AppFramework\Controller; |
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use OCP\AppFramework\Http; |
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use OCP\AppFramework\Http\JSONResponse; |
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use OCP\AppFramework\Http\Response; |
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use OCP\AppFramework\Middleware; |
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use OCP\IRequest; |
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use OCP\IUserSession; |
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use OCP\IConfig; |
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/** |
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* This middleware sets the correct CORS headers on a response if the |
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* controller has the @CORS annotation. This is needed for webapps that want |
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* to access an API and don't run on the same domain, see |
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* https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS |
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*/ |
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class CORSMiddleware extends Middleware { |
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/** |
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* @var IRequest |
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*/ |
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private $request; |
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/** |
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* @var ControllerMethodReflector |
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*/ |
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private $reflector; |
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/** |
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* @var IUserSession |
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*/ |
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private $session; |
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/** |
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* @var IConfig |
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*/ |
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private $config; |
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/** |
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* @param IRequest $request |
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* @param ControllerMethodReflector $reflector |
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* @param IUserSession $session |
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* @param IConfig $config |
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*/ |
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View Code Duplication |
public function __construct(IRequest $request, |
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ControllerMethodReflector $reflector, |
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IUserSession $session, |
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IConfig $config) { |
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$this->request = $request; |
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$this->reflector = $reflector; |
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$this->session = $session; |
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$this->config = $config; |
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} |
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/** |
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* This is being run after a successful controllermethod call and allows |
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* the manipulation of a Response object. The middleware is run in reverse order |
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* |
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* @param Controller $controller the controller that is being called |
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* @param string $methodName the name of the method that will be called on |
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* the controller |
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* @param Response $response the generated response from the controller |
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* @return Response a Response object |
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* @throws SecurityException |
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*/ |
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public function afterController($controller, $methodName, Response $response){ |
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// only react if its a CORS request and if the request sends origin and |
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$userId = null; |
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if (!is_null($this->session->getUser())) { |
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$userId = $this->session->getUser()->getUID(); |
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} |
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if($this->request->getHeader("Origin") !== null && |
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$this->reflector->hasAnnotation('CORS') && !is_null($userId)) { |
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$requesterDomain = $this->request->getHeader("Origin"); |
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$headers = \OC_Response::setCorsHeaders($userId, $requesterDomain, $this->config); |
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foreach ($headers as $key => $value) { |
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$response->addHeader($key, implode(',', $value)); |
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} |
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// allow credentials headers must not be true or CSRF is possible |
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// otherwise |
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foreach($response->getHeaders() as $header => $value) { |
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if(strtolower($header) === 'access-control-allow-credentials' && |
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strtolower(trim($value)) === 'true') { |
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$msg = 'Access-Control-Allow-Credentials must not be '. |
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'set to true in order to prevent CSRF'; |
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throw new SecurityException($msg); |
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} |
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} |
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} |
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return $response; |
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} |
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/** |
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* If an SecurityException is being caught return a JSON error response |
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* |
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* @param Controller $controller the controller that is being called |
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* @param string $methodName the name of the method that will be called on |
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* the controller |
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* @param \Exception $exception the thrown exception |
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* @throws \Exception the passed in exception if it can't handle it |
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* @return Response a Response object or null in case that the exception could not be handled |
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*/ |
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public function afterException($controller, $methodName, \Exception $exception){ |
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if($exception instanceof SecurityException){ |
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$response = new JSONResponse(['message' => $exception->getMessage()]); |
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if($exception->getCode() !== 0) { |
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$response->setStatus($exception->getCode()); |
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} else { |
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$response->setStatus(Http::STATUS_INTERNAL_SERVER_ERROR); |
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} |
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return $response; |
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} |
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throw $exception; |
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} |
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} |
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owncloud /
core
