SilexSecurity configuration.

$app->register(new Silex\Provider\SecurityServiceProvider(),
	[
		$app['security.firewalls'] = [
			'secured' => [
				'pattern' => '^/',
				'anonymous' => true,
				'form' => [
					'login_path' => '/login',
					'check_path' => '/admin/login_check',
				],
				'logout' => [
					'logout_path' => '/admin/logout',
					'invalidate_session' => true,
				],
				'users' => function () use ($app) {
					return $app['user_repository'];
				}
			],
		],

		$app['security.role_hierarchy'] = [
			'ROLE_ADMIN' => [
				'ROLE_USER',
				'ROLE_ALLOWED_TO_SWITCH',
			],
		],

		$app['security.access_rules'] = [
			['^/$', 'IS_AUTHENTICATED_ANONYMOUSLY'],
			['^/admin', 'ROLE_ADMIN'],
		],
	]
);