/**
  * (non-PHPdoc)
  * @see IActionController::executeAction()
  */
 public function executeAction($parameters)
 {
     $configKey = trim($this->_websoccer->getConfig("sofortcom_configkey"));
     if (!strlen($configKey)) {
         throw new Exception("Sofort.com configuration key is not configured.");
     }
     // verify user
     $userId = $parameters['u'];
     $result = $this->_db->querySelect("id", $this->_websoccer->getConfig("db_prefix") . "_user", "id = %d", $userId);
     $user = $result->fetch_array();
     $result->free();
     if (!$user) {
         throw new Exception("illegal user id");
     }
     // read the notification from php://input  (http://php.net/manual/en/wrappers.php.php)
     $SofortLib_Notification = new SofortLibNotification();
     $TestNotification = $SofortLib_Notification->getNotification(file_get_contents('php://input'));
     // read data
     $SofortLibTransactionData = new SofortLibTransactionData($configKey);
     $SofortLibTransactionData->addTransaction($TestNotification);
     // verify transaction data
     $SofortLibTransactionData->sendRequest();
     if ($SofortLibTransactionData->isError()) {
         EmailHelper::sendSystemEmail($this->_websoccer, $this->_websoccer->getConfig("systememail"), "Failed Sofort.com payment notification", "Error: " . $SofortLibTransactionData->getError());
         throw new Exception($SofortLibTransactionData->getError());
     } else {
         // verify status
         if ($SofortLibTransactionData->getStatus() != 'received') {
             EmailHelper::sendSystemEmail($this->_websoccer, $this->_websoccer->getConfig("systememail"), "Failed Sofort.com payment notification: invalid status", "Status: " . $SofortLibTransactionData->getStatus());
             throw new Exception("illegal status");
         }
         // credit amount
         $amount = $SofortLibTransactionData->getAmount();
         PremiumDataService::createPaymentAndCreditPremium($this->_websoccer, $this->_db, $userId, $amount, "sofortcom-notify");
     }
     return null;
 }