Legacy escape route LegacyAuthenticator.php

LegacyAuthenticator.php

<?php

namespace Acme\Framework\Security;

use Acme\Authentication\AuthenticationSessionInterface;
use Acme\Authentication\User;
use Acme\Authentication\UserManagerInterface;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\Exception\AuthenticationException;
use Symfony\Component\Security\Core\User\UserInterface;
use Symfony\Component\Security\Core\User\UserProviderInterface;
use Symfony\Component\Security\Guard\AbstractGuardAuthenticator;

final class LegacyAuthenticator extends AbstractGuardAuthenticator
{
    /**
     * @var AuthenticationSessionInterface
     */
    private $authenticationSession;

    /**
     * @var UserManagerInterface
     */
    private $userManager;

    /**
     * @param AuthenticationSessionInterface $authenticationSession
     * @param UserManagerInterface $userManager
     */
    public function __construct(
        AuthenticationSessionInterface $authenticationSession,
        UserManagerInterface $userManager
    ) {
        $this->authenticationSession = $authenticationSession;
        $this->userManager = $userManager;
    }

    /**
     * {@inheritdoc}
     */
    public function start(Request $request, AuthenticationException $authException = null)
    {
        return new RedirectResponse('/path/to/login/page');
    }

    /**
     * {@inheritdoc}
     */
    public function getCredentials(Request $request)
    {
        return [
            'username' => $this->authenticationSession->getUsername(),
            'password' => $this->authenticationSession->getPassword()
        ];
    }

    /**
     * {@inheritdoc}
     */
    public function getUser($credentials, UserProviderInterface $userProvider)
    {
        // Legacy app had a method of logging in via an already hashed password which is what relogin() is here.
        if ($this->userManager->relogin($credentials['username'], $credentials['password'])) {
            return new User(
                $this->userManager->getUsername(),
                $this->userManager->getFirstName(),
                $this->userManager->getLastName(),
                $this->userManager->getAvatar(),
                $this->userManager->getRoles()
            );
        }

        return null;
    }

    /**
     * {@inheritdoc}
     */
    public function checkCredentials($credentials, UserInterface $user)
    {
        return true;
    }

    /**
     * {@inheritdoc}
     */
    public function onAuthenticationFailure(Request $request, AuthenticationException $exception)
    {
        return new RedirectResponse('/path/to/login/page');
    }

    /**
     * {@inheritdoc}
     */
    public function onAuthenticationSuccess(Request $request, TokenInterface $token, $providerKey)
    {
        // Just continue with request
        return null;
    }

    /**
     * {@inheritdoc}
     */
    public function supportsRememberMe()
    {
        return false;
    }
}