1: <?php namespace Laravel; use Closure;
 2: 
 3: class Auth {
 4: 
 5:     /**
 6:      * The currently active authentication drivers.
 7:      *
 8:      * @var array
 9:      */
10:     public static $drivers = array();
11: 
12:     /**
13:      * The third-party driver registrar.
14:      *
15:      * @var array
16:      */
17:     public static $registrar = array();
18: 
19:     /**
20:      * Get an authentication driver instance.
21:      *
22:      * @param  string  $driver
23:      * @return Driver
24:      */
25:     public static function driver($driver = null)
26:     {
27:         if (is_null($driver)) $driver = Config::get('auth.driver');
28: 
29:         if ( ! isset(static::$drivers[$driver]))
30:         {
31:             static::$drivers[$driver] = static::factory($driver);
32:         }
33: 
34:         return static::$drivers[$driver];
35:     }
36: 
37:     /**
38:      * Create a new authentication driver instance.
39:      *
40:      * @param  string  $driver
41:      * @return Driver
42:      */
43:     protected static function factory($driver)
44:     {
45:         if (isset(static::$registrar[$driver]))
46:         {
47:             $resolver = static::$registrar[$driver];
48: 
49:             return $resolver();
50:         }
51: 
52:         switch ($driver)
53:         {
54:             case 'fluent':
55:                 return new Auth\Drivers\Fluent(Config::get('auth.table'));
56: 
57:             case 'eloquent':
58:                 return new Auth\Drivers\Eloquent(Config::get('auth.model'));
59: 
60:             default:
61:                 throw new \Exception("Auth driver {$driver} is not supported.");
62:         }
63:     }
64: 
65:     /**
66:      * Register a third-party authentication driver.
67:      *
68:      * @param  string   $driver
69:      * @param  Closure  $resolver
70:      * @return void
71:      */
72:     public static function extend($driver, Closure $resolver)
73:     {
74:         static::$registrar[$driver] = $resolver;
75:     }
76: 
77:     /**
78:      * Magic Method for calling the methods on the default cache driver.
79:      *
80:      * <code>
81:      *      // Call the "user" method on the default auth driver
82:      *      $user = Auth::user();
83:      *
84:      *      // Call the "check" method on the default auth driver
85:      *      Auth::check();
86:      * </code>
87:      */
88:     public static function __callStatic($method, $parameters)
89:     {
90:         return call_user_func_array(array(static::driver(), $method), $parameters);
91:     }
92: 
93: }