/**
  * Check if logged user has permission to acces required resource
  * 
  * @param \THCFrame\Security\Model\BasicUser $user
  * @param string $requiredRole
  */
 public function isGranted($user, $requiredRole)
 {
     if ($user === null) {
         $actualRole = 'role_guest';
     } elseif ($user instanceof BasicUser) {
         $actualRole = strtolower($user->getRole());
     } else {
         $actualRole = 'role_guest';
     }
     $requiredRole = strtolower(trim($requiredRole));
     if (substr($requiredRole, 0, 5) != 'role_') {
         throw new Exception\Role(sprintf('Role %s is not valid', $requiredRole));
     } elseif (!$this->_roleManager->roleExist($requiredRole)) {
         throw new Exception\Role(sprintf('Role %s is not deffined', $requiredRole));
     } else {
         $actualRoles = $this->_roleManager->getRole($actualRole);
         if (NULL !== $actualRoles) {
             if (in_array($requiredRole, $actualRoles)) {
                 return true;
             } else {
                 return false;
             }
         } else {
             throw new Exception\Role(sprintf('User role %s is not valid role', $actualRole));
         }
     }
 }
 /**
  * Method erases all authentication tokens for logged user and regenerates
  * session
  */
 public function logout()
 {
     $session = Registry::get('session');
     $session->erase('authUser')->erase('lastActive')->erase('csrf');
     BasicUser::deleteAuthenticationToken();
     $this->_user = NULL;
     @session_regenerate_id();
 }