BookStack\Http\Middleware\Authenticate::handle PHP Метод

    public function handle($request, Closure $next)
    {
        if ($this->auth->check() && setting('registration-confirmation') && !$this->auth->user()->email_confirmed) {
            return redirect(baseUrl('/register/confirm/awaiting'));
        }
        if ($this->auth->guest() && !setting('app-public')) {
            if ($request->ajax()) {
                return response('Unauthorized.', 401);
            } else {
                return redirect()->guest(baseUrl('/login'));
            }
        }
        return $next($request);
    }