tinymce-editor/Application/Core/config.php

<?php

/**
 * This file is part of O3-Shop TinyMCE editor module.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 3.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with O3-Shop.  If not, see <http://www.gnu.org/licenses/>
 *
 * @copyright  Copyright (c) 2022 Marat Bedoev, bestlife AG
 * @copyright  Copyright (c) 2023 O3-Shop (https://www.o3-shop.com)
 * @license    https://www.gnu.org/licenses/gpl-3.0  GNU General Public License 3 (GPLv3)
 */

declare(strict_types=1);

function checkAccess(string $action): void
{
    if ($_COOKIE['filemanagerkey'] !== md5($_SERVER['DOCUMENT_ROOT'].$_COOKIE['admin_sid'])) {
        die('Access Denied!!');
    }
}