2013-08-17 09:16:48 +00:00
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<?php
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/**
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2015-03-26 10:44:34 +00:00
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* @author Bernhard Posselt <dev@bernhard-posselt.com>
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* @author Georg Ehrke <georg@owncloud.com>
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* @author Lukas Reschke <lukas@owncloud.com>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Thomas Tanghus <thomas@tanghus.net>
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2013-08-17 09:16:48 +00:00
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*
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2015-03-26 10:44:34 +00:00
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* @copyright Copyright (c) 2015, ownCloud, Inc.
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* @license AGPL-3.0
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2013-08-17 09:16:48 +00:00
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*
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2015-03-26 10:44:34 +00:00
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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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2013-08-17 09:16:48 +00:00
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*
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2015-03-26 10:44:34 +00:00
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* This program is distributed in the hope that it will be useful,
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2013-08-17 09:16:48 +00:00
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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2015-03-26 10:44:34 +00:00
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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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2013-08-17 09:16:48 +00:00
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*
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2015-03-26 10:44:34 +00:00
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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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2013-08-17 09:16:48 +00:00
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*
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*/
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2015-02-26 10:37:37 +00:00
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2013-08-17 09:16:48 +00:00
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namespace OC\AppFramework\Http;
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use \OC\AppFramework\Middleware\MiddlewareDispatcher;
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2013-10-23 03:57:34 +00:00
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use \OC\AppFramework\Http;
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2014-05-06 14:29:19 +00:00
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use \OC\AppFramework\Utility\ControllerMethodReflector;
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2013-10-11 08:07:57 +00:00
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use OCP\AppFramework\Controller;
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2014-05-06 14:29:19 +00:00
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use OCP\AppFramework\Http\Response;
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2014-10-28 15:34:04 +00:00
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use OCP\AppFramework\Http\DataResponse;
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2014-05-06 14:29:19 +00:00
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use OCP\IRequest;
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2013-08-17 09:16:48 +00:00
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/**
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2013-08-20 15:20:36 +00:00
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* Class to dispatch the request to the middleware dispatcher
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2013-08-17 09:16:48 +00:00
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*/
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class Dispatcher {
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private $middlewareDispatcher;
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private $protocol;
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2014-05-06 14:29:19 +00:00
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private $reflector;
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private $request;
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2013-08-17 09:16:48 +00:00
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/**
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* @param Http $protocol the http protocol with contains all status headers
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* @param MiddlewareDispatcher $middlewareDispatcher the dispatcher which
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* runs the middleware
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2014-11-27 13:19:00 +00:00
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* @param ControllerMethodReflector $reflector the reflector that is used to inject
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2014-05-06 14:29:19 +00:00
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* the arguments for the controller
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* @param IRequest $request the incoming request
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2013-08-17 09:16:48 +00:00
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*/
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public function __construct(Http $protocol,
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2014-06-10 22:57:00 +00:00
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MiddlewareDispatcher $middlewareDispatcher,
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ControllerMethodReflector $reflector,
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IRequest $request) {
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2013-08-17 09:16:48 +00:00
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$this->protocol = $protocol;
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$this->middlewareDispatcher = $middlewareDispatcher;
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2014-05-06 14:29:19 +00:00
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$this->reflector = $reflector;
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$this->request = $request;
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2013-08-17 09:16:48 +00:00
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}
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/**
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* Handles a request and calls the dispatcher on the controller
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* @param Controller $controller the controller which will be called
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* @param string $methodName the method name which will be called on
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* the controller
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* @return array $array[0] contains a string with the http main header,
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* $array[1] contains headers in the form: $key => value, $array[2] contains
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* the response output
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2014-11-27 13:19:00 +00:00
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* @throws \Exception
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2013-08-17 09:16:48 +00:00
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*/
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public function dispatch(Controller $controller, $methodName) {
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$out = array(null, array(), null);
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try {
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2014-06-10 22:54:25 +00:00
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// prefill reflector with everything thats needed for the
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2014-05-06 14:29:19 +00:00
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// middlewares
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$this->reflector->reflect($controller, $methodName);
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2013-08-17 09:16:48 +00:00
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$this->middlewareDispatcher->beforeController($controller,
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$methodName);
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2014-05-06 14:29:19 +00:00
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$response = $this->executeController($controller, $methodName);
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2013-08-17 09:16:48 +00:00
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2013-08-20 15:20:36 +00:00
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// if an exception appears, the middleware checks if it can handle the
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// exception and creates a response. If no response is created, it is
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// assumed that theres no middleware who can handle it and the error is
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// thrown again
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2013-08-17 09:16:48 +00:00
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} catch(\Exception $exception){
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$response = $this->middlewareDispatcher->afterException(
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$controller, $methodName, $exception);
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2013-08-20 23:00:26 +00:00
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if (is_null($response)) {
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throw $exception;
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}
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2013-08-17 09:16:48 +00:00
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}
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$response = $this->middlewareDispatcher->afterController(
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$controller, $methodName, $response);
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// depending on the cache object the headers need to be changed
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$out[0] = $this->protocol->getStatusHeader($response->getStatus(),
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$response->getLastModified(), $response->getETag());
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2014-11-27 13:19:00 +00:00
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$out[1] = array_merge($response->getHeaders());
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$out[2] = $response->getCookies();
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2015-01-22 19:26:46 +00:00
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$out[3] = $this->middlewareDispatcher->beforeOutput(
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$controller, $methodName, $response->render()
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);
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$out[4] = $response;
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2013-08-17 09:16:48 +00:00
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return $out;
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}
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2014-05-06 14:29:19 +00:00
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/**
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* Uses the reflected parameters, types and request parameters to execute
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* the controller
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2014-05-11 11:59:48 +00:00
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* @param Controller $controller the controller to be executed
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* @param string $methodName the method on the controller that should be executed
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2014-05-06 14:29:19 +00:00
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* @return Response
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*/
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private function executeController($controller, $methodName) {
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$arguments = array();
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// valid types that will be casted
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$types = array('int', 'integer', 'bool', 'boolean', 'float');
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2014-05-13 08:40:49 +00:00
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foreach($this->reflector->getParameters() as $param => $default) {
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2014-05-06 14:29:19 +00:00
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// try to get the parameter from the request object and cast
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// it to the type annotated in the @param annotation
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2014-05-13 08:40:49 +00:00
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$value = $this->request->getParam($param, $default);
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2014-05-06 14:29:19 +00:00
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$type = $this->reflector->getType($param);
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2014-06-10 22:54:25 +00:00
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// if this is submitted using GET or a POST form, 'false' should be
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2014-05-06 14:29:19 +00:00
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// converted to false
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if(($type === 'bool' || $type === 'boolean') &&
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2014-06-10 22:54:25 +00:00
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$value === 'false' &&
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2014-05-06 14:29:19 +00:00
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(
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$this->request->method === 'GET' ||
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2014-06-10 22:54:25 +00:00
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strpos($this->request->getHeader('Content-Type'),
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2014-05-06 17:09:03 +00:00
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'application/x-www-form-urlencoded') !== false
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2014-05-06 14:29:19 +00:00
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)
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) {
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$value = false;
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2014-06-29 20:40:50 +00:00
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} elseif($value !== null && in_array($type, $types)) {
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2014-05-06 14:29:19 +00:00
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settype($value, $type);
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}
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2014-06-10 22:54:25 +00:00
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2014-05-06 14:29:19 +00:00
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$arguments[] = $value;
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}
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$response = call_user_func_array(array($controller, $methodName), $arguments);
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2014-10-28 15:34:04 +00:00
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// format response
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if($response instanceof DataResponse || !($response instanceof Response)) {
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2014-06-10 22:54:25 +00:00
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2014-05-06 14:29:19 +00:00
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// get format from the url format or request format parameter
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$format = $this->request->getParam('format');
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2014-06-10 22:54:25 +00:00
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2014-05-06 14:29:19 +00:00
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// if none is given try the first Accept header
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if($format === null) {
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2014-06-10 22:57:00 +00:00
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$headers = $this->request->getHeader('Accept');
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$format = $controller->getResponderByHTTPHeader($headers);
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}
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2014-05-06 14:29:19 +00:00
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2014-05-06 18:25:41 +00:00
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$response = $controller->buildResponse($response, $format);
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2014-05-06 14:29:19 +00:00
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}
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return $response;
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}
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2013-08-17 09:16:48 +00:00
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}
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