/**
* Validate the IPN notification
*y gon
* @param array $update_info like $_REQUEST
* @param EE_Payment|EEI_Payment $payment
* @return boolean
*/
public function validate_ipn($update_info, $payment)
{
//allow us to skip validating IPNs with PayPal (useful for testing)
if (apply_filters('FHEE__EEG_Paypal_Standard__validate_ipn__skip', false)) {
return true;
}
//...otherwise, we actually don't care what the $update_info is, we need to look
//at the request directly because we can't use $update_info because it has issues with quotes
// Reading POSTed data directly from $_POST causes serialization issues with array data in the POST.
// Instead, read raw POST data from the input stream.
// @see https://gist.github.com/xcommerce-gists/3440401
$raw_post_data = file_get_contents('php://input');
$raw_post_array = explode('&', $raw_post_data);
$update_info = array();
foreach ($raw_post_array as $keyval) {
$keyval = explode('=', $keyval);
if (count($keyval) == 2) {
$update_info[$keyval[0]] = urldecode($keyval[1]);
}
}
// read the IPN message sent from PayPal and prepend 'cmd=_notify-validate'
$req = 'cmd=_notify-validate';
$get_magic_quotes_exists = function_exists('get_magic_quotes_gpc') ? true : false;
foreach ($update_info as $key => $value) {
if ($get_magic_quotes_exists && get_magic_quotes_gpc() == 1) {
$value = urlencode(stripslashes($value));
} else {
$value = urlencode($value);
}
$req .= "&{$key}={$value}";
}
// HTTP POST the complete, unaltered IPN back to PayPal
$response = wp_remote_post($this->_gateway_url, array('body' => $req, 'sslverify' => false, 'timeout' => 60, 'user-agent' => 'Event Espresso v' . EVENT_ESPRESSO_VERSION . '; ' . home_url(), 'httpversion' => '1.1'));
// then check the response
if (!is_wp_error($response) && array_key_exists('body', $response) && strcmp($response['body'], "VERIFIED") == 0) {
return true;
} else {
// huh, something's wack... the IPN didn't validate. We must have replied to the IPN incorrectly,
// or their API must have changed: http://www.paypalobjects.com/en_US/ebook/PP_OrderManagement_IntegrationGuide/ipn.html
if (is_wp_error($response)) {
$error_msg = sprintf(__('WP Error. Code: "%1$s", Message: "%2$s", Data: "%3$s"', 'event_espresso'), $response->get_error_code(), $response->get_error_message(), print_r($response->get_error_data, true));
} elseif (is_array($response) && isset($response['body'])) {
$error_msg = $response['body'];
} else {
$error_msg = print_r($response, true);
}
$payment->set_gateway_response(sprintf(__("IPN Validation failed! Paypal responded with '%s'", "event_espresso"), $error_msg));
$payment->set_details(array('REQUEST' => $update_info, 'VALIDATION_RESPONSE' => $response));
$payment->set_status(EEM_Payment::status_id_failed);
// log the results
$this->log(array('url' => $this->_process_response_url(), 'message' => $payment->gateway_response(), 'details' => $payment->details()), $payment);
return false;
}
}