}
$hubChallenge = $_GET['hub_challenge'];
if (!isset($_GET['hub_lease_seconds'])) {
header('HTTP/1.0 400 Bad Request');
echo "Parameter missing: hub.lease_seconds\n";
exit(1);
}
$hubLeaseSeconds = $_GET['hub_lease_seconds'];
//FIXME: store in database
header('HTTP/1.0 200 OK');
header('Content-type: text/plain');
echo $hubChallenge;
exit(0);
} else {
if ($hubMode == 'unsubscribe') {
$sub = $subDb->get($hubTopic);
if ($sub === false) {
//we do not know this subscription
header('HTTP/1.0 404 Not Found');
echo "We are not subscribed to this hub.topic\n";
exit(1);
}
$pos = array_search($hubTopic, $GLOBALS['phinde']['subscriptions']);
if ($pos !== false) {
//we do not want to unsubscribe
header('HTTP/1.0 404 Not Found');
echo "We do not want to unsubscribe from this hub.topic\n";
exit(1);
}
$sub->remove($hubTopic);
header('HTTP/1.0 200 OK');
