require_once $whmcsdir . '/includes/gatewayfunctions.php';
require_once $whmcsdir . '/includes/invoicefunctions.php';
require_once $whmcsdir . '/modules/gateways/gocardless.php';
# get gateway params using WHMCS getGatewayVariables method
$gateway = getGatewayVariables('gocardless');
# sanity check to ensure module is active
if (!$gateway['type']) {
die("Module Not Activated");
}
# set relevant API information for GoCardless module
gocardless_set_account_details($gateway);
# get the raw contents of the callback and decode JSON
$webhook = file_get_contents('php://input');
$webhook_array = json_decode($webhook, true);
# validate the webhook by verifying the integrity of the payload with GoCardless
if (GoCardless::validate_webhook($webhook_array['payload']) !== true) {
# we could not validate the web hook
header('HTTP/1.1 400 Bad Request');
exit(__LINE__ . ': Payload could not be verified');
}
# store various elements of the webhook array into params
$val = $webhook_array['payload'];
# base what we are doing depending on the resource type
switch ($val['resource_type']) {
case 'pre_authorization':
# handle preauths (possible actions - cancelled, expired)
switch ($val['action']) {
# handle cancelled or expired preauths
case 'cancelled':
case 'expired':
# delete related preauths
/**
* Validate the payload of a webhook
*
* @param array $params The payload of the webhook
*
* @return boolean True if webhook signature is valid
*/
public static function validate_webhook($params)
{
return GoCardless::$client->validate_webhook($params);
}
$pre_auth_url = GoCardless::new_pre_authorization_url($payment_details);
echo ' · <a href="' . $pre_auth_url . '">New pre-authorized payment</a>';
// New bill
$payment_details = array('amount' => '30.00', 'name' => 'Donation', 'user' => array('first_name' => 'Tom', 'last_name' => 'Blomfield', 'email' => '*****@*****.**'));
$bill_url = GoCardless::new_bill_url($payment_details);
echo ' · <a href="' . $bill_url . '">New bill</a></p>';
echo 'NB. The \'new bill\' link is also a demo of pre-populated user data';
echo '<h2>API calls</h2>';
echo 'GoCardless_Merchant::find(\'258584\')';
echo '<blockquote><pre>';
$merchant = GoCardless_Merchant::find('258584');
print_r($merchant);
echo '</pre></blockquote>';
echo 'GoCardless_Merchant::find(\'258584\')->pre_authorizations()';
echo '<blockquote><pre>';
$preauths = GoCardless_Merchant::find('258584')->pre_authorizations();
print_r($preauths);
echo '</pre></blockquote>';
echo 'GoCardless_PreAuthorization::find(\'992869\')->create_bill($bill_details)';
echo '<blockquote><pre>';
$pre_auth = GoCardless_PreAuthorization::find('013M018V0K');
$bill_details = array('amount' => '15.00');
$bill = $pre_auth->create_bill($bill_details);
print_r($bill);
echo '</pre></blockquote>';
echo 'validate webhook:';
echo '<blockquote><pre>';
$webhook_json = '{"payload":{"bills":[{"id":"880807"},{"status":"pending"},{"source_type":"subscription"},{"source_id":"21"},{"uri":"https:\\/\\/sandbox.gocardless.com\\/api\\/v1\\/bills\\/880807"}],"action":"created","resource_type":"bill","signature":"f25a611fb9afbc272ab369ead52109edd8a88cbb29a3a00903ffbce0ec6be5cb"}}';
$webhook = json_decode($webhook_json, true);
var_dump(GoCardless::validate_webhook($webhook['payload']));
echo '</pre></blockquote>';
/**
* Accept the raw json response and validate it
* @param $webhook
* @return bool
*/
public function validateWebhook($webhook)
{
$webhook_array = json_decode($webhook, true);
return \GoCardless::validate_webhook($webhook_array['payload']);
}
<?php
require_once $_SERVER['DOCUMENT_ROOT'] . '/../lib/init.php';
$webhook = file_get_contents('php://input');
$webhook_array = json_decode($webhook, true);
$webhook_valid = GoCardless::validate_webhook($webhook_array['payload']);
if ($webhook_valid == TRUE) {
header('HTTP/1.1 200 OK');
} else {
header('HTTP/1.1 403 Invalid signature');
}
public function processCallback()
{
$webhook = file_get_contents('php://input');
$webhook_array = json_decode($webhook, true);
if (\GoCardless::validate_webhook($webhook_array['payload']) == true) {
header('HTTP/1.1 200 OK');
foreach ($webhook_array['payload']['bills'] as $bill) {
$orders = $this->orderFactory->getByTransactionReference($bill['id']);
if (count($orders) == 1) {
$order = $orders->pop();
if (floatval($order->getTotalCost()) === floatval($bill['amount'])) {
$this->updateOrder($order, $bill['status']);
}
}
}
}
}
