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app/controllers/IntermediateController.inc

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+<?php
+
+	/**
+	 * The Legend of Z
+	 *
+	 * @author	Oliver Hanraths <oliver.hanraths@uni-duesseldorf.de>
+	 * @copyright	2014 Heinrich-Heine-Universität Düsseldorf
+	 * @license	http://www.gnu.org/licenses/gpl.html
+	 * @link	https://bitbucket.org/coderkun/the-legend-of-z
+	 */
+	
+	namespace hhu\z\controllers;
+	
+	
+	/**
+	 * Abstract class for implementing a Controller of an IntermediateAgent.
+	 * 
+	 * @author	Oliver Hanraths <oliver.hanraths@uni-duesseldorf.de>
+	 */
+	abstract class IntermediateController extends \hhu\z\Controller
+	{
+		/**
+		 * Required models
+		 * 
+		 * @var array
+		 */
+		public $models = array('users', 'userroles', 'seminaries', 'characters');
+		/**
+		 * Current user
+		 * 
+		 * @var array
+		 */
+		public static $user = null;
+		
+		
+		
+		
+		/**
+		 * Construct a new IntermediateController.
+		 * 
+		 * @throws	DriverNotFoundException
+		 * @throws	DriverNotValidException
+		 * @throws	ModelNotValidException
+		 * @throws	ModelNotFoundException
+		 * @throws	ViewNotFoundException
+		 * @param	string	$layoutName	Name of the current Layout
+		 * @param	string	$action		Current Action
+		 * @param	Agent	$agent		Corresponding Agent
+		 */
+		public function __construct($layoutName, $action, $agent)
+		{
+			parent::__construct($layoutName, $action, $agent);
+		}
+		
+		
+		
+		/**
+		 * Prefilter that is executed before running the Controller.
+		 * 
+		 * @param	Request		$request	Current request
+		 * @param	Response	$response	Current response
+		 */
+		public function preFilter(\nre\core\Request $request, \nre\core\Response $response)
+		{
+			parent::preFilter($request, $response);
+			
+			// Get userdata
+			try {
+				self::$user = $this->Users->getUserById($this->Auth->getUserId());
+				self::$user['roles'] = array_map(function($r) { return $r['name']; }, $this->Userroles->getUserrolesForUserById(self::$user['id']));
+			}
+			catch(\nre\exceptions\IdNotFoundException $e) {
+			}
+			
+			// Check permissions
+			$this->checkPermission($request, $response);
+			
+			// Set userdata
+			$this->set('loggedUser', self::$user);
+		}
+		
+		
+		/**
+		 * Postfilter that is executed after running the Controller.
+		 * 
+		 * @param	Request		$request	Current request
+		 * @param	Response	$response	Current response
+		 */
+		public function postFilter(\nre\core\Request $request, \nre\core\Response $response)
+		{
+			parent::postFilter($request, $response);
+		}
+		
+		
+		
+		
+		/**
+		 * Check user permissions.
+		 * 
+		 * @throws AccessDeniedException
+		 */
+		private function checkPermission(\nre\core\Request $request, \nre\core\Response $response)
+		{
+			// Determine user
+			$userRoles = array('guest');
+			if(!is_null(self::$user)) {
+				$userRoles = self::$user['roles'];
+			}
+			
+			
+			// Do not check error pages
+			if($response->getParam(0, 'toplevel') == \nre\core\Config::getDefault('toplevel-error')) {
+				return;
+			}
+			if($response->getParam(1, 'intermediate') == \nre\core\Config::getDefault('intermediate-error')) {
+				return;
+			}
+			
+			// Determine permissions of Intermediate Controller for current action
+			$controller = $this->agent->controller;
+			$action = $this->request->getParam(2, 'action');
+			if(!property_exists($controller, 'permissions')) {
+				return;	// Allow if nothing is specified
+			}
+			if(!array_key_exists($action, $controller->permissions)) {
+				return;	// Allow if Action is not specified
+			}
+			$permissions = $controller->permissions[$action];
+			
+			
+			// Check permissions
+			if(count(array_intersect($userRoles, $permissions)) == 0) {
+				throw new \nre\exceptions\AccessDeniedException();
+			}
+		}
+		
+	}
+
+?>