public function all()
    {
        $props = $this->prop;

        foreach ($props as $prop_name => $prop_value) {
            $props[$prop_name] = $this->getenv_default('ROUNDCUBE_' . strtoupper($prop_name), $prop_value);
        }

        $rcube  = rcube::get_instance();
        $plugin = $rcube->plugins->exec_hook('config_get', array(
            'name' => '*', 'result' => $props));

        return $plugin['result'];
    }