Prestashop module Ogone - validation.php

<?php
/*
* 2007-2011 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Academic Free License (AFL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/afl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2011 PrestaShop SA
*  @version  Release: $Revision: 1.4 $
*  @license    http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

include(dirname(__FILE__).'/../../config/config.inc.php');
include(dirname(__FILE__).'/ogone.php');

$ogone = new Ogone();

/* First we need to check var presence */
$neededVars = array('orderID', 'amount', 'currency', 'PM', 'ACCEPTANCE', 'STATUS', 'CARDNO', 'PAYID', 'NCERROR', 'BRAND', 'SHASIGN');
$params = '<br /><br />'.$ogone->l('Received parameters:').'<br /><br />';

foreach ($neededVars AS $k)
    if (!isset($_GET[$k]))
        die($ogone->l('Missing parameter:').' '.$k);
    else
        $params .= $k.' : '.$_GET[$k].'<br />';

/* Then, load the customer cart and perform some checks */
$cart = new Cart((int)($_GET['orderID']));
if (Validate::isLoadedObject($cart))
{
    /* Fist, check for a valid SHA-1 signature */
    $ogoneParams = array();
    $ignoreKeyList = $ogone->getIgnoreKeyList();

    foreach ($_GET as $key => $value)
        if (strtoupper($key) != 'SHASIGN' AND $value != '' AND !in_array($key, $ignoreKeyList))
            $ogoneParams[strtoupper($key)] = $value;

    ksort($ogoneParams);
    $shasign = '';
    foreach ($ogoneParams as $key => $value)
        $shasign .= strtoupper($key).'='.$value.Configuration::get('OGONE_SHA_OUT');
    $sha1 = strtoupper(sha1($shasign));

    if ($sha1 == $_GET['SHASIGN'])
    {
        switch ($_GET['STATUS'])
        {
            case 1:
                /* Real error or payment canceled */
                $ogone->validate((int)$_GET['orderID'], _PS_OS_ERROR_, 0, $_GET['NCERROR'].$params, $_GET['secure_key']);
                break;
            case 2:
                /* Real error - authorization refused */
                $ogone->validate((int)$_GET['orderID'], _PS_OS_ERROR_, 0, $ogone->l('Error (auth. refused)').'<br />'.$_GET['NCERROR'].$params, $_GET['secure_key']);
                break;
            case 5:
            case 9:
                /* Payment OK */
                $ogone->validate((int)$_GET['orderID'], _PS_OS_PAYMENT_, (float)($_GET['amount']), $ogone->l('Payment authorized / OK').$params, $_GET['secure_key']);
                break;
            case 6:
            case 7:
            case 8:
                // Payment canceled later
                if ($id_order = (int)(Order::getOrderByCartId((int)($_GET['orderID']))))
                {
                    // Update the amount really paid
                    $order = new Order($id_order);
                    $order->total_paid_real = 0;
                    $order->update();

                    // Send a new message and change the state
                    $history = new OrderHistory();
                    $history->id_order = $id_order;
                    $history->changeIdOrderState(_PS_OS_ERROR_, $id_order);
                    $history->addWithemail(true, array());
                }
                break;
            default:
                $ogone->validate((int)$_GET['orderID'], _PS_OS_ERROR_, (float)($_GET['amount']), $ogone->l('Unknown status:').' '.$_GET['STATUS'].$params, $_GET['secure_key']);
        }
        exit;
    }
    else
    {
        $message = $ogone->l('Invalid SHA-1 signature').'<br />'.$ogone->l('SHA-1 given:').' '.$_GET['SHASIGN'].'<br />'.$ogone->l('SHA-1 calculated:').' '.$sha1.'<br />'.$ogone->l('Plain key:').' '.$shasign;
        $ogone->validate((int)$_GET['orderID'], _PS_OS_ERROR_, 0, $message.'<br />'.$params, $_GET['secure_key']);
    }
}