Custom authentication provider in silex application

I try to write custom authentication provider for LDAP-authentication using silex documentation - Defining a custom Authentication Provider.

But if I look into $app['security.authentication_providers'] there are two providers. One that I defined App\LdapAuthenticationProvider and one Symfony\Component\Security\Core\Authentication\Provider\DaoAuthenticationProvider

And when I try to authorize user I get error because there is call of a App\LdapUserProvider::loadUserByUsername() from class DaoAuthenticationProvider.

If I would have only one provider in $app['security.authentication_providers'] I think I should not get error because my LDAP-provider do not call loadUserByUsername.

Here is dump of $app['security.authentication_providers']

array (size=2)
  0 => object(App\LdapAuthenticationProvider)[194]
    private 'userProvider' => 
      object(App\LdapUserProvider)[176]
        private 'ldap' => resource(57, ldap link)
        private 'defaultRoles' => 
          array (size=1)
          ...
    private 'providerKey' => string 'default' (length=7)
  1 => object(Symfony\Component\Security\Core\Authentication\Provider\DaoAuthenticationProvider)[195]
    private 'encoderFactory' => 
      object(Symfony\Component\Security\Core\Encoder\EncoderFactory)[197]
        private 'encoders' => 
          array (size=1)
          ...
    private 'userProvider' => 
      object(App\LdapUserProvider)[176]
        private 'ldap' => resource(57, ldap link)
        private 'defaultRoles' => 
          array (size=1)
          ...
    private 'hideUserNotFoundExceptions' (Symfony\Component\Security\Core\Authentication\Provider\UserAuthenticationProvider) => boolean true
    private 'userChecker' (Symfony\Component\Security\Core\Authentication\Provider\UserAuthenticationProvider) => object(Symfony\Component\Security\Core\User\UserChecker)[196]
    private 'providerKey' (Symfony\Component\Security\Core\Authentication\Provider\UserAuthenticationProvider) => string 'default' (length=7)

So, does anybody know why there are extra provider and how can I get rid of it?

There are code for bootstraping application, LdapAuthenticationListener and LdapAuthenticationProvider.

Solution

Problem is solved.

I've just extended my LdapAuthenticationListener class with symfony2 UsernamePasswordFormAuthenticationListener and change bootstarp like this:

$app['security.authentication_listener.factory.ldap'] = $app->protect(
    function ($name, $options) use ($app) {
        $app['security.authentication_provider.'.$name.'.ldap'] = $app->share(
            function () use ($app) {
                return new LdapAuthenticationProvider(
                    $app['security.user_provider.default'],
                    'ldap'
                );
            }
        );

        $app['security.authentication_listener.'.$name.'.ldap'] = $app->share(
            function () use ($app, $name, $options) {
                $app['security.authentication.success_handler.'.$name] =
                    $app['security.authentication.success_handler._proto']($name, $options);
                $app['security.authentication.failure_handler.'.$name] =
                    $app['security.authentication.failure_handler._proto']($name, $options);

                return new LdapAuthenticationListener(
                    $app['security'],
                    $app['security.authentication_manager'],
                    $app['security.session_strategy'],
                    $app['security.http_utils'],
                    $name,
                    $app['security.authentication.success_handler.'.$name],
                    $app['security.authentication.failure_handler.'.$name],
                    array_merge(
                        array(
                            'check_path' => '/admin/login_check',
                            'login_path' => '/login',
                        ),
                        $options
                    ),
                    $app['logger'],
                    $app['dispatcher'],
                    null
                );
            }
        );

        return array(
            'security.authentication_provider.'.$name.'.ldap',
            'security.authentication_listener.'.$name.'.ldap',
            null,
            'pre_auth'
        );
    }

I need custom authentication listener to overwrite token in authentication method and authentication provider retrieve user from user provider by username and password $this->userProvider->loadUserByUsernameAndPassword($usernam, $password)