/**
* Validates callback
*
* @param PaymentTransaction $paymentTransaction Payment transaction
* @param CallbackResponse $callbackResponse Callback from PaynetEasy
*
* @throws ValidationException Validation error
*/
protected function validateCallback(PaymentTransaction $paymentTransaction, CallbackResponse $callbackResponse)
{
$this->validateQueryConfig($paymentTransaction);
$this->validateSignature($paymentTransaction, $callbackResponse);
if (!in_array($callbackResponse->getStatus(), static::$allowedStatuses)) {
throw new ValidationException("Invalid callback status: '{$callbackResponse->getStatus()}'");
}
$errorMessage = '';
$missedFields = array();
$unequalValues = array();
foreach (static::$callbackFieldsDefinition as $fieldDefinition) {
list($fieldName, $propertyPath) = $fieldDefinition;
if (empty($callbackResponse[$fieldName])) {
$missedFields[] = $fieldName;
} elseif ($propertyPath) {
$propertyValue = PropertyAccessor::getValue($paymentTransaction, $propertyPath, false);
$callbackValue = $callbackResponse[$fieldName];
if ($propertyValue != $callbackValue) {
$unequalValues[] = "CallbackResponse field '{$fieldName}' value '{$callbackValue}' does not " . "equal PaymentTransaction property '{$propertyPath}' value '{$propertyValue}'";
}
}
}
if (!empty($missedFields)) {
$errorMessage .= "Some required fields missed or empty in CallbackResponse: \n" . implode(', ', $missedFields) . ".\n";
}
if (!empty($unequalValues)) {
$errorMessage .= "Some fields from CallbackResponse unequal properties from PaymentTransaction: \n" . implode("\n", $unequalValues) . " \n";
}
if (!empty($errorMessage)) {
throw new ValidationException($errorMessage);
}
}
/**
* Generates the control code is used to ensure that it is a particular
* Merchant (and not a fraudster) that initiates the transaction.
*
* @param PaymentTransaction $paymentTransaction Payment transaction to generate control code
*
* @return string Generated control code
*/
protected function createSignature(PaymentTransaction $paymentTransaction)
{
$controlCode = '';
foreach (static::$signatureDefinition as $propertyPath) {
$controlCode .= PropertyAccessor::getValue($paymentTransaction, $propertyPath);
}
return sha1($controlCode);
}
