Move \OC\AppFramework to PSR-4

* Also moved the autoloader setup a bit up since we need it in initpaths

1 files changed, 179 insertions, 0 deletions

diff --git a/lib/private/AppFramework/Http/Dispatcher.php b/lib/private/AppFramework/Http/Dispatcher.php
new file mode 100644
index 00000000000..641339c0d94
--- /dev/null
+++ b/lib/private/AppFramework/Http/Dispatcher.php
@@ -0,0 +1,179 @@
+<?php
+/**
+ * @author Bernhard Posselt <dev@bernhard-posselt.com>
+ * @author Georg Ehrke <georg@owncloud.com>
+ * @author Lukas Reschke <lukas@owncloud.com>
+ * @author Morris Jobke <hey@morrisjobke.de>
+ * @author Thomas Müller <thomas.mueller@tmit.eu>
+ * @author Thomas Tanghus <thomas@tanghus.net>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+namespace OC\AppFramework\Http;
+
+use \OC\AppFramework\Middleware\MiddlewareDispatcher;
+use \OC\AppFramework\Http;
+use \OC\AppFramework\Utility\ControllerMethodReflector;
+
+use OCP\AppFramework\Controller;
+use OCP\AppFramework\Http\Response;
+use OCP\AppFramework\Http\DataResponse;
+use OCP\IRequest;
+
+
+/**
+ * Class to dispatch the request to the middleware dispatcher
+ */
+class Dispatcher {
+
+	private $middlewareDispatcher;
+	private $protocol;
+	private $reflector;
+	private $request;
+
+	/**
+	 * @param Http $protocol the http protocol with contains all status headers
+	 * @param MiddlewareDispatcher $middlewareDispatcher the dispatcher which
+	 * runs the middleware
+	 * @param ControllerMethodReflector $reflector the reflector that is used to inject
+	 * the arguments for the controller
+	 * @param IRequest $request the incoming request
+	 */
+	public function __construct(Http $protocol,
+								MiddlewareDispatcher $middlewareDispatcher,
+								ControllerMethodReflector $reflector,
+								IRequest $request) {
+		$this->protocol = $protocol;
+		$this->middlewareDispatcher = $middlewareDispatcher;
+		$this->reflector = $reflector;
+		$this->request = $request;
+	}
+
+
+	/**
+	 * Handles a request and calls the dispatcher on the controller
+	 * @param Controller $controller the controller which will be called
+	 * @param string $methodName the method name which will be called on
+	 * the controller
+	 * @return array $array[0] contains a string with the http main header,
+	 * $array[1] contains headers in the form: $key => value, $array[2] contains
+	 * the response output
+	 * @throws \Exception
+	 */
+	public function dispatch(Controller $controller, $methodName) {
+		$out = array(null, array(), null);
+
+		try {
+			// prefill reflector with everything thats needed for the
+			// middlewares
+			$this->reflector->reflect($controller, $methodName);
+
+			$this->middlewareDispatcher->beforeController($controller,
+				$methodName);
+			$response = $this->executeController($controller, $methodName);
+
+			// if an exception appears, the middleware checks if it can handle the
+			// exception and creates a response. If no response is created, it is
+			// assumed that theres no middleware who can handle it and the error is
+			// thrown again
+		} catch(\Exception $exception){
+			$response = $this->middlewareDispatcher->afterException(
+				$controller, $methodName, $exception);
+			if (is_null($response)) {
+				throw $exception;
+			}
+		}
+
+		$response = $this->middlewareDispatcher->afterController(
+			$controller, $methodName, $response);
+
+		// depending on the cache object the headers need to be changed
+		$out[0] = $this->protocol->getStatusHeader($response->getStatus(),
+			$response->getLastModified(), $response->getETag());
+		$out[1] = array_merge($response->getHeaders());
+		$out[2] = $response->getCookies();
+		$out[3] = $this->middlewareDispatcher->beforeOutput(
+			$controller, $methodName, $response->render()
+		);
+		$out[4] = $response;
+
+		return $out;
+	}
+
+
+	/**
+	 * Uses the reflected parameters, types and request parameters to execute
+	 * the controller
+	 * @param Controller $controller the controller to be executed
+	 * @param string $methodName the method on the controller that should be executed
+	 * @return Response
+	 */
+	private function executeController($controller, $methodName) {
+		$arguments = array();
+
+		// valid types that will be casted
+		$types = array('int', 'integer', 'bool', 'boolean', 'float');
+
+		foreach($this->reflector->getParameters() as $param => $default) {
+
+			// try to get the parameter from the request object and cast
+			// it to the type annotated in the @param annotation
+			$value = $this->request->getParam($param, $default);
+			$type = $this->reflector->getType($param);
+
+			// if this is submitted using GET or a POST form, 'false' should be
+			// converted to false
+			if(($type === 'bool' || $type === 'boolean') &&
+				$value === 'false' &&
+				(
+					$this->request->method === 'GET' ||
+					strpos($this->request->getHeader('Content-Type'),
+						'application/x-www-form-urlencoded') !== false
+				)
+			) {
+				$value = false;
+
+			} elseif($value !== null && in_array($type, $types)) {
+				settype($value, $type);
+			}
+
+			$arguments[] = $value;
+		}
+
+		$response = call_user_func_array(array($controller, $methodName), $arguments);
+
+		// format response
+		if($response instanceof DataResponse || !($response instanceof Response)) {
+
+			// get format from the url format or request format parameter
+			$format = $this->request->getParam('format');
+
+			// if none is given try the first Accept header
+			if($format === null) {
+				$headers = $this->request->getHeader('Accept');
+				$format = $controller->getResponderByHTTPHeader($headers);
+			}
+
+			$response = $controller->buildResponse($response, $format);
+		}
+
+		return $response;
+	}
+
+}