function start()
{
$config = $this->f3->get('config');
$limiter = new RateLimiter('webfinger');
if (!$limiter->throttle()) {
header('Retry-After: ' . $limiter->getInterval());
// We never display a log for rate limit errors
$this->f3->status(429);
$this->fatalError($this->t('Client has been blocked from making further requests'));
}
$this->logger->log(LogLevel::INFO, 'SimpleID\\Protocols\\WebFinger->start');
if (!$this->f3->exists('GET.resource') || $this->f3->get('GET.resource') == '') {
$this->logger->log(LogLevel::NOTICE, 'resource parameter missing or empty');
$this->f3->status(400);
$this->fatalError($this->t('resource parameter missing or empty'));
return;
}
$resource = $this->f3->get('GET.resource');
$this->logger->log(LogLevel::INFO, 'Requested resource URI: ' . $resource);
$jrd = $this->getJRD($resource);
if ($jrd == NULL) {
$limiter->penalize();
// Stop $remote_addr from querying again
$this->f3->status(404);
$this->fatalError($this->t('Resource not found'));
return;
}
$jrd = $this->fixJRDAliases($jrd, $resource);
if (isset($_GET['rel'])) {
$jrd = $this->filterJRDRels($jrd, $_GET['rel']);
}
header('Content-Type: application/jrd+json');
header('Content-Disposition: inline; filename=webfinger.json');
header('Access-Control-Allow-Origin: ' . $config['webfinger_access_control_allow_origin']);
if ($this->f3->get('VERB') == 'HEAD') {
return;
}
print json_encode($jrd);
}
