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<?php

/**
 * ownCloud - News
 *
 * @author Bernhard Posselt
 * @copyright 2012 Bernhard Posselt dev@bernhard-posselt.com
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or any later version.
 *
 * This library 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 along with this library.  If not, see <http://www.gnu.org/licenses/>.
 *
 */


namespace OCA\News\Middleware;

use OCA\AppFramework\Http\Request;
use OCA\AppFramework\Http\Response;
use OCA\AppFramework\Middleware\Middleware;
use OCA\AppFramework\Utility\MethodAnnotationReader;


class CORSMiddleware extends Middleware {

	private $request;

	public function __construct(Request $request) {
		$this->request = $request;
	}


	/**
	 * This is being run after a successful controllermethod call and allows
	 * the manipulation of a Response object. The middleware is run in reverse order
	 *
	 * @param Controller $controller the controller that is being called
	 * @param string $methodName the name of the method that will be called on
	 *                           the controller
	 * @param Response $response the generated response from the controller
	 * @return Response a Response object
	 */
	public function afterController($controller, $methodName, Response $response){
		$annotationReader = new MethodAnnotationReader($controller, $methodName);

		// only react if its an API request and if the request sends origin
		if(isset($this->request->server['HTTP_ORIGIN']) &&
			$annotationReader->hasAnnotation('API')) {

			$origin = $this->request->server['HTTP_ORIGIN'];
			$response->addHeader('Access-Control-Allow-Origin', $origin);
			$response->addHeader('Access-Control-Allow-Credentials', 'true');

		}
		return $response;
	}


}