Model_Auth_User::login PHP Méthode

    public function login(array &$array, $redirect = FALSE)
    {
        $fieldname = $this->unique_key($array['username']);
        $array = Validate::factory($array)->label('username', $this->_labels[$fieldname])->label('password', $this->_labels['password'])->filter(TRUE, 'trim')->rules('username', $this->_rules[$fieldname])->rules('password', $this->_rules['password']);
        // Get the remember login option
        $remember = isset($array['remember']);
        // Login starts out invalid
        $status = FALSE;
        if ($array->check()) {
            // Attempt to load the user
            $this->where($fieldname, '=', $array['username'])->find();
            if ($this->loaded() and Auth::instance()->login($this, $array['password'], $remember)) {
                if (is_string($redirect)) {
                    // Redirect after a successful login
                    Request::instance()->redirect($redirect);
                }
                // Login is successful
                $status = TRUE;
            } else {
                $array->error('username', 'invalid');
            }
        }
        return $status;
    }

 public function login(array &$array, $redirect = FALSE)
 {
     $status = parent::login($array, $redirect);
     if ($status) {
         if (isset($this->flag)) {
             if ($this->flag > time()) {
                 $status = FALSE;
                 Auth::instance()->logout();
             }
         }
     }
     return $status;
 }