wallabag/src/Wallabag/ApiBundle/Security/Firewall/WsseListener.php

<?php

namespace Wallabag\ApiBundle\Security\Firewall;

use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\Security\Http\Firewall\ListenerInterface;
use Symfony\Component\Security\Core\Exception\AuthenticationException;
use Symfony\Component\Security\Core\SecurityContextInterface;
use Symfony\Component\Security\Core\Authentication\AuthenticationManagerInterface;
use Wallabag\ApiBundle\Security\Authentication\Token\WsseUserToken;
use Psr\Log\LoggerInterface;

class WsseListener implements ListenerInterface
{
    protected $securityContext;
    protected $authenticationManager;
    protected $logger;

    public function __construct(SecurityContextInterface $securityContext, AuthenticationManagerInterface $authenticationManager, LoggerInterface $logger)
    {
        $this->securityContext = $securityContext;
        $this->authenticationManager = $authenticationManager;
        $this->logger = $logger;
    }

    public function handle(GetResponseEvent $event)
    {
        $request = $event->getRequest();

        $wsseRegex = '/UsernameToken Username="([^"]+)", PasswordDigest="([^"]+)", Nonce="([^"]+)", Created="([^"]+)"/';
        if (!$request->headers->has('x-wsse') || 1 !== preg_match($wsseRegex, $request->headers->get('x-wsse'), $matches)) {
            return;
        }

        $token = new WsseUserToken();
        $token->setUser($matches[1]);

        $token->digest = $matches[2];
        $token->nonce = $matches[3];
        $token->created = $matches[4];

        try {
            $authToken = $this->authenticationManager->authenticate($token);

            $this->securityContext->setToken($authToken);

            return;
        } catch (AuthenticationException $failed) {
            $failedMessage = 'WSSE Login failed for '.$token->getUsername().'. Why ? '.$failed->getMessage();
            $this->logger->err($failedMessage);

            // Deny authentication with a '403 Forbidden' HTTP response
            $response = new Response();
            $response->setStatusCode(403);
            $response->setContent($failedMessage);
            $event->setResponse($response);

            return;
        }
    }
}