payment_saferpay.module

<?php

/**
 * @file
 * Bootstrap file of the payment_saferpay module.
 */

define('PAYMENT_SAFERPAY_ECI_NO_LIABILITYSHIFT', 0);
define('PAYMENT_SAFERPAY_ECI_3D_AUTHENTICATION', 1);
define('PAYMENT_SAFERPAY_ECI_3D_NO_AUTHENTICATION', 2);

/**
 * Returns the URL to post the credit card information to.
 *
 * @param array $settings
 *   Array of payment method settings
 * @param $payment
 *
 * @return string
 *   The URL to point the credit card form action to, FALSE in case of an error.
 */
function _payment_saferpay_business_initpay($settings, $payment) {
  $data = array();

  // @todo: Check this:
  // * Für die Verwendung von CARDREFID="new" muss bei Saferpay zunächst ein numerischer Startwert für den
  // Account hinterlegt werden. Kontaktieren Sie hierfür integration@saferpay.com.
  $data['CARDREFID'] = 'new';

  $data['FAILLINK'] = url('saferpay/business/scd/' . $payment->id(), array('absolute' => TRUE));
  $data['SUCCESSLINK'] = $data['FAILLINK'];
  $data['BACKLINK'] = $data['FAILLINK'];

  return payment_saferpay_initpay($settings, $data);
}

/**
 * Returns the initial payment transaction URL to redirect or post to.
 *
 * Deals with the arguments common to both payment methods.
 *
 * @param $settings
 *   Array of payment method settings.
 * @param array $data
 *   Array of additional arguments.
 *
 * @return string
 *   URL to redirect the user to make payment.
 */
function payment_saferpay_initpay($settings, array $data = array()) {

  $data['ACCOUNTID'] = $settings['account_id'];

  if (!empty($settings['password'])) {
    $data['spPassword'] = $settings['password'];
  }

  // Saferpay only supports en, de, it and fr. For everything else, fall back to
  // en.
  $language = \Drupal::languageManager()->getCurrentLanguage()->id;
  $data['LANGID'] = in_array($language, array('en', 'de', 'fr', 'it')) ? $language : 'EN';

  $url = url('https://www.saferpay.com/hosting/CreatePayInit.asp', array('external' => TRUE, 'query' => $data));
  $return = payment_saferpay_process_url($url);
  if (strpos($return, 'ERROR') !== FALSE) {
    drupal_set_message(t('An error occurred during payment: @error.', array('@error' => $return)), 'error');
    return FALSE;
  }
  return $return;
}

/**
 * Proxy for saferpay's requests.
 *
 * @param $url
 *   The webservice prepared url, i.e. initpay, verifypayconfirm, paycomplete
 *
 * @return bool
 *   Webservice response.
 */
function payment_saferpay_process_url($url) {
  $ch = curl_init($url);
  curl_setopt($ch, CURLOPT_PORT, 443);
  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
  curl_setopt($ch, CURLOPT_HEADER, 0);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
  $sReturn = curl_exec($ch);
  curl_close($ch);
  return $sReturn;
}