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<?php
/**
* 2CheckOut Class
*
* Integrate the 2CheckOut payment gateway in your site using this easy
* to use library. Just see the example code to know how you should
* proceed. Btw, this library does not support the recurring payment
* system. If you need that, drop me a note and I will send to you.
*
* @package Payment Gateway
* @category Library
* @author Md Emran Hasan <phpfour@gmail.com>
* @link http://www.phpfour.com
*/
class TwoCo extends PaymentGateway
{
/**
* Secret word to be used for IPN verification
*
* @var string
*/
public $secret;
/**
* Initialize the 2CheckOut gateway
*
* @param none
* @return void
*/
public function __construct()
{
parent::__construct();
// Some default values of the class
$this->gatewayUrl = 'https://www.2checkout.com/checkout/purchase';
$this->ipnLogFile = '2co.ipn_results.log';
}
/**
* Enables the test mode
*
* @param none
* @return none
*/
public function enableTestMode()
{
$this->testMode = TRUE;
$this->addField('demo', 'Y');
}
/**
* Set the secret word
*
* @param string the scret word
* @return void
*/
public function setSecret($word)
{
if (!empty($word))
{
$this->secret = $word;
}
}
/**
* Validate the IPN notification
*
* @param none
* @return boolean
*/
public function validateIpn()
{
foreach ($_POST as $field=>$value)
{
$this->ipnData["$field"] = $value;
}
$vendorNumber = ($this->ipnData["vendor_number"] != '') ? $this->ipnData["vendor_number"] : $this->ipnData["sid"];
$orderNumber = $this->ipnData["order_number"];
$orderTotal = $this->ipnData["total"];
// If demo mode, the order number must be forced to 1
if($this->demo == "Y" || $this->ipnData['demo'] == 'Y')
{
$orderNumber = "1";
}
// Calculate md5 hash as 2co formula: md5(secret_word + vendor_number + order_number + total)
$key = strtoupper(md5($this->secret . $vendorNumber . $orderNumber . $orderTotal));
// verify if the key is accurate
if($this->ipnData["key"] == $key || $this->ipnData["x_MD5_Hash"] == $key)
{
$this->logResults(true);
return true;
}
else
{
$this->lastError = "Verification failed: MD5 does not match!";
$this->logResults(false);
return false;
}
}
}