Symfony2 ContextErrorException in Custom Authentication Provider - php

Question

I'm trying to make a How to create a custom Authentication Provider, after a full reading and looking into the Symfony code, I thought that just with creating a Factory, Authentication Provider and using the symfony default class will be enough but actually I'm missing something and I'm getting this error
ContextErrorException: Catchable Fatal Error: Argument 1 passed to Acme\DemoBundle\Provider\MyProvider::__construct() must implement interface Symfony\Component\Security\Core\User\UserProviderInterface, string given, called in D:\wamp\www\sf2ldap\app\cache\dev\appDevDebugProjectContainer.php on line 1383 and defined in D:\wamp\www\sf2ldap\src\Acme\DemoBundle\Provider\MyProvider.php line 20
The Factory
namespace Acme\DemoBundle\Factory;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Reference;
use Symfony\Component\DependencyInjection\DefinitionDecorator;
use Symfony\Component\Config\Definition\Builder\NodeDefinition;
use Symfony\Bundle\SecurityBundle\DependencyInjection\Security\Factory\AbstractFactory;
class MyFactory extends AbstractFactory
{
public function getPosition()
{
return 'form';
}
public function getKey()
{
return 'kstr';
}
protected function createAuthProvider(ContainerBuilder $container, $id, $config, $userProviderId)
{
$providerId = 'security.authentication.provider.kstr.' . $id;
$container
->setDefinition($providerId, new DefinitionDecorator('kstr.security.authentication.provider'))
->replaceArgument(0, new Reference($userProviderId));
return $providerId;
}
protected function getListenerId()
{
return 'security.authentication.listener.form';
}
}
My Provider
namespace Acme\DemoBundle\Provider;
use Symfony\Component\Security\Core\Authentication\Provider\AuthenticationProviderInterface;
use Symfony\Component\Security\Core\User\UserProviderInterface;
use Symfony\Component\Security\Core\Exception\AuthenticationException;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
class MyProvider implements AuthenticationProviderInterface
{
private $_userProvider;
public function __construct(UserProviderInterface $userProvider)
{
$this->_userProvider = $userProvider;
}
public function authenticate(TokenInterface $token)
{
try
{
$user = $this->_userProvider->loadUserByUsername($token->getUsername());
//custom auth steps
$token = new UsernamePasswordToken(
$token->getUsername(), null, $token->getProviderKey(), $user->getRoles()
);
return $token;
}
} catch (\Exception $exc)
{
throw new AuthenticationException('Invalid username or password. ', 0, $e);
}
throw new AuthenticationException('Invalid username or password asdfasd');
}
public function supports(TokenInterface $token)
{
return $token instanceof UsernamePasswordToken;
}
}
services.yml
services:
kstr.security.authentication.provider:
class: Acme\DemoBundle\Provider\MyProvider
arguments: [""]
security.yml
security:
encoders:
Acme\DemoBundle\Entity\SecureUser: plaintext
providers:
multiples:
chain:
providers: [entity_provider, ldap]
entity_provider:
entity: { class: AcmeDemoBundle:SecureUser, property: username }
ldap:
id: kstr.security.authentication.provider
firewalls:
dev:
pattern: ^/(_(profiler|wdt)|css|images|js)/
security: false
login:
pattern: ^/demo/secured/login$
security: false
secured_area:
pattern: ^/demo/secured/
kstr:
check_path: _security_check
login_path: _demo_login
provider: ldap
logout:
path: _demo_logout
target: _demo
need some help to figure this out, what I'm missing here? do I need to create a custom listener even if the default "security.authentication.listener.form" fulfil my needs?

Answer 1

You're passing a string arguments: [""] as first argument to the constructor of the service.
That's why the typehint in __construct(UserProviderInterface $userProvider) fails.
Inject a UserProviderInterface properly and the exception will disappear.