/**
* Handles security related exceptions.
*
* @param Event $event An Event instance
*/
public function handleException(Event $event)
{
$exception = $event->getParameter('exception');
$request = $event->getParameter('request');
if ($exception instanceof AuthenticationException) {
if (null !== $this->logger) {
$this->logger->info(sprintf('Authentication exception occurred; redirecting to authentication entry point (%s)', $exception->getMessage()));
}
try {
$response = $this->startAuthentication($request, $exception);
} catch (\Exception $e) {
$event->setParameter('exception', $e);
return;
}
} elseif ($exception instanceof AccessDeniedException) {
$token = $this->context->getToken();
if (null === $token || $token instanceof AnonymousToken) {
if (null !== $this->logger) {
$this->logger->info('Access denied (user is anonymous); redirecting to authentication entry point');
}
try {
$response = $this->startAuthentication($request, new InsufficientAuthenticationException('Full authentication is required to access this resource.', $token, 0, $exception));
} catch (\Exception $e) {
$event->setParameter('exception', $e);
return;
}
} else {
if (null !== $this->logger) {
$this->logger->info('Access is denied (and user is not anonymous)');
}
if (null === $this->errorPage) {
return;
}
$subRequest = Request::create($this->errorPage);
$subRequest->attributes->set(SecurityContext::ACCESS_DENIED_ERROR, $exception->getMessage());
try {
$response = $event->getSubject()->handle($subRequest, HttpKernelInterface::SUB_REQUEST, true);
} catch (\Exception $e) {
if (null !== $this->logger) {
$this->logger->err(sprintf('Exception thrown when handling an exception (%s: %s)', get_class($e), $e->getMessage()));
}
$event->setParameter('exception', new \RuntimeException('Exception thrown when handling an exception.', 0, $e));
return;
}
$response->setStatusCode(403);
}
} else {
return;
}
$event->setReturnValue($response);
return true;
}