private function setErrorCode($code)
{
$message = Messages::getByCode($code);
if (empty($message)) {
throw new Exception(sprintf('Error code <strong>%s</strong> not defined', $code));
}
$msg = Messages::getByCode($message['msg']);
$this->setError(sprintf('[%s] %s [%s - %s]', $message['code'], $message['message'], $message['msg'], $msg['message']));
}
public function checkTransaction(array $post)
{
$prefix = 'Ds_';
if (empty($post) || empty($post[$prefix . 'Signature'])) {
throw new Exception('_POST data is empty');
}
$error = isset($post[$prefix . 'ErrorCode']) ? $post[$prefix . 'ErrorCode'] : null;
if ($error) {
if ($message = Messages::getByCode($error)) {
throw new Exception(sprintf('TPV returned error code %s: %s', $error, $message['message']));
} else {
throw new Exception(sprintf('TPV returned unknown error code %s', $error));
}
}
$response = isset($post[$prefix . 'Response']) ? $post[$prefix . 'Response'] : null;
if (is_null($response) || strlen($response) === 0) {
throw new Exception('Response code is empty (no length)');
}
if ((int) $response < 0 || (int) $response > 99) {
if ($message = Messages::getByCode($response)) {
throw new Exception(sprintf('Response code is Transaction Denied %s: %s', $response, $message['message']));
} else {
throw new Exception(sprintf('Response code is unknown %s', $response));
}
}
$fields = array('Amount', 'Order', 'MerchantCode', 'Currency', 'Response');
$key = '';
foreach ($fields as $field) {
if (empty($post[$prefix . $field])) {
throw new Exception(sprintf('Field <strong>%s</strong> is empty and is required to verify transaction'));
}
$key .= $post[$prefix . $field];
}
$signature = strtoupper(sha1($key . $this->options['Key']));
if ($signature !== $post[$prefix . 'Signature']) {
throw new Exception(sprintf('Signature not valid (%s != %s)', $signature, $post[$prefix . 'Signature']));
}
$response = (int) $post[$prefix . 'Response'];
if ($response >= 100 && $response !== 900) {
throw new Exception(sprintf('Transaction error. Code: <strong>%s</strong>', $post[$prefix . 'Response']));
}
return $post[$prefix . 'Signature'];
}
private function checkTransactionResponse(array $data, $prefix)
{
$response = isset($data[$prefix . 'Response']) ? $data[$prefix . 'Response'] : null;
if (is_null($response) || strlen($response) === 0) {
throw new Exception('Response code is empty (no length)');
}
if ((int) $response < 0 || (int) $response > 99 && $response !== 900) {
if ($message = Messages::getByCode($response)) {
throw new Exception(sprintf('Response code is Transaction Denied %s: %s', $response, $message['message']));
} else {
throw new Exception(sprintf('Response code is unknown %s', $response));
}
}
}
