/**
* Validates a IPN message
*
* @return boolean
*/
public function validate()
{
if (isset($this->isIpnVerified)) {
return $this->isIpnVerified;
} else {
$request = self::IPN_CMD;
if (function_exists('get_magic_quotes_gpc') && get_magic_quotes_gpc() == 1) {
$get_magic_quotes_exists = true;
} else {
$get_magic_quotes_exists = false;
}
foreach ($this->ipnData as $key => $value) {
if ($get_magic_quotes_exists) {
$value = urlencode(stripslashes($value));
} else {
$value = urlencode($value);
}
$request .= "&{$key}={$value}";
}
$httpConfig = new PPHttpConfig($this->setEndpoint());
$httpConfig->addCurlOption(CURLOPT_FORBID_REUSE, 1);
$httpConfig->addCurlOption(CURLOPT_HTTPHEADER, array('Connection: Close'));
$connection = PPConnectionManager::getInstance()->getConnection($httpConfig, $this->config);
$response = $connection->execute($request);
if ($response == 'VERIFIED') {
$this->isIpnVerified = true;
return true;
}
$this->isIpnVerified = false;
return false;
// value is 'INVALID'
}
}
