Exposes Symfony2 Security Context

example.php

<?php

use ZZZ\Component\Security;


if (Security::factory()->isGranted('ROLE_ADMIN')) {
  // ...   
}

Security.php

<?php

namespace ZZZ\Component;

use Symfony\Component\Security\Core\SecurityContextInterface;
use Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken;

/**
 * Classe que expõe o contexto de segurança para uso fora de Controllers
 */
class Security
{
    /**
     * @var SecurityContextInterface
     */
    protected static $context;
    
    /**
     * Factory Method
     * 
     * @return Security
     */
    public static function factory()
    {
        return new static();
    }
    
    /**
     * Constructor
     * 
     * @throws \LogicException quando o contexto de segurança não está iniciado
     * 
     * @param SecurityContextInterface $context
     */
    public function __construct(SecurityContextInterface $context = null)
    {
        if (static::$context === null) {
            static::$context = $context;
        }
        
        if ( ! static::$context) {
            throw new \LogicException('Security Context is not initialized.');
        }
    }
    
    /**
     * Retorna o Token de Autenticação
     * 
     * @return UsernamePasswordToken
     */
    public function getToken()
    {
        return static::$context->getToken();
    }
    
    /**
     * Retorna o Usuário logado
     * 
     * @return User
     */
    public function getUser()
    {
        return $this->getToken()->getUser();
    }
    
    /**
     * Checa permissão no Token atual
     * 
     * @param mixed $attributes
     * @param mixed|null $object
     * @return Boolean
     */
    public function isGranted($attributes, $object = null)
    {
        return static::$context->isGranted($attributes, $object);
    }
}

services.yml

services:
    zzz.security:
        class: ZZZ\Component\Security
        arguments: [@security.context]