l4filter.php

<?php
// Other methods go here

// Auth filter
Route::filter('auth', function()
{
    if (\League\OAuth2\Server\Util\Request::buildFromGlobals()->header('Authorization')) {
        // TODO DOES NOT WORK!!!
        return Route::filter('oauth', 'LucaDegasperi\OAuth2Server\Filters\OAuthFilter');
    } else {
        if (Auth::guest()) return Redirect::guest('user/login');
    }
});