How to get firewall name from Request in Symfony 5? - php

Question

The question is simple. I am implmenting AccessDeniedListener and I get an ExceptionEvent object. From this I can get request. I want to apply certain logic ONLY if I am inside one of my firewalls defined in security.yaml.
How can I get the Firewall name from ExceptionEvent or Request instances?
EDIT:
I have found this code "works"
$firewall_context_name = $event->getRequest()->attributes->get('_firewall_context');
However Im not very happy about it. There should be a FirewallContext or FirewallConfig objects retrieveable somehow, no?
Thanks
class AccessDeniedListener implements EventSubscriberInterface
{
public static function getSubscribedEvents(): array
{
return [
// the priority must be greater than the Security HTTP
// ExceptionListener, to make sure it's called before
// the default exception listener
KernelEvents::EXCEPTION => ['onKernelException', 2],
];
}
public function onKernelException(ExceptionEvent $event): void
{
$exception = $event->getThrowable();
if (!$exception instanceof AccessDeniedException) {
return;
}
$request = $event->getRequest();
// HOW TO GET FIREWALL NAME HERE???
security.yaml
firewalls:
dev:
pattern: ^/(_(profiler|wdt)|css|images|js)/
security: false
api:
pattern: ^/api/
security: false
main:
custom_authenticators:
- App\Security\LoginFormAuthenticator
logout:
path: app_logout
lazy: true
provider: app_user_provider

Answer 1

As stated in the docs you linked:
This object can be accessed through the getFirewallConfig(Request $request) method of the
Symfony\Bundle\SecurityBundle\Security\FirewallMap class
This class cannot be injected directly, so you'll have to configure your dependency in services.yaml using the service alias security.firewall.map (or create a service alias if you plan to use it somewhere else).
services:
# ...
App\Listener\AccessDeniedListener:
arguments:
$firewallMap: '#security.firewall.map'
Now modify your listener to receive this parameter:
class AccessDeniedListener implements EventSubscriberInterface
{
private $firewallMap;
public function __construct(FirewallMapInterface $firewallMap)
{
$this->firewallMap = $firewallMap;
}
// Ommited getSubscribedEvents
public function onKernelException(ExceptionEvent $event): void
{
$request = $event->getRequest();
$firewallConfig = $this->firewallMap->getFirewallConfig($request);
if (null === $firewallConfig) {
return;
}
$firewallName = $firewallConfig->getName();
}
}