public static function validateIPN($data, $paypal_url = '')
{
// parse the paypal URL
if (!$paypal_url) {
$paypal_url = plgDigiCom_PayPaypalHelper::buildPaymentSubmitUrl();
}
$url_parsed = parse_url($paypal_url);
// generate the post string from the _POST vars as-well-as load the
// _POST vars into an arry so we can play with them from the calling
// script.
// append ipn command
// open the connection to paypal
$fp = fsockopen($url_parsed["host"], "80", $err_num, $err_str, 30);
// $fp = fsockopen ($this->paypal_url, 80, $errno, $errstr, 30);
if (!$fp) {
// could not open the connection. If loggin is on, the error message
// will be in the log.
self::$last_error = 'fsockopen error no. ' . $err_num . ': ' . $err_str;
plgDigiCom_PayPaypalHelper::log_ipn_results(false);
return false;
} else {
$post_string = '';
foreach ($data as $field => $value) {
self::$ipn_data["{$field}"] = $value;
$post_string .= $field . '=' . urlencode(stripslashes($value)) . '&';
}
$post_string .= "cmd=_notify-validate";
// Post the data back to paypal
fputs($fp, "POST {$url_parsed['path']} HTTP/1.1\r\n");
fputs($fp, "Host: {$url_parsed['host']}\r\n");
fputs($fp, "Content-type: application/x-www-form-urlencoded\r\n");
fputs($fp, "Content-length: " . strlen($post_string) . "\r\n");
fputs($fp, "Connection: close\r\n\r\n");
fputs($fp, $post_string . "\r\n\r\n");
// loop through the response from the server and append to variable
while (!feof($fp)) {
self::$ipn_response .= fgets($fp, 1024);
}
fclose($fp);
// close connection
}
if (preg_match("/verified/", $post_string)) {
// Valid IPN transaction.
plgDigiCom_PayPaypalHelper::log_ipn_results(true);
return true;
} else {
// Invalid IPN transaction. Check the log for details.
self::$last_error = 'IPN Validation Failed.';
plgDigiCom_PayPaypalHelper::log_ipn_results(false);
return false;
}
}
function onTP_Processpayment($data)
{
$params = $this->params;
$secure_post = $params->get('secure_post');
$sandbox = $params->get('sandbox');
$paypal_url = plgDigiCom_PayPaypalHelper::buildPaymentSubmitUrl($secure_post, $sandbox);
$verify = plgDigiCom_PayPaypalHelper::validateIPN($data);
if (!$verify) {
return false;
}
$payment_status = $this->translateResponse($data['payment_status']);
$result = array('order_id' => $data['custom'], 'transaction_id' => $data['txn_id'], 'buyer_email' => $data['payer_email'], 'status' => $payment_status, 'txn_type' => $data['txn_type'], 'total_paid_amt' => $data['mc_gross'], 'raw_data' => $data, 'processor' => 'paypal');
return $result;
}
