Sindbad~EG File Manager

<?php

/**
 * ---------------------------------------------------------------------
 *
 * GLPI - Gestionnaire Libre de Parc Informatique
 *
 * http://glpi-project.org
 *
 * @copyright 2015-2022 Teclib' and contributors.
 * @copyright 2003-2014 by the INDEPNET Development Team.
 * @licence   https://www.gnu.org/licenses/gpl-3.0.html
 *
 * ---------------------------------------------------------------------
 *
 * LICENSE
 *
 * This file is part of GLPI.
 *
 * 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, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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 this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 * ---------------------------------------------------------------------
 */

use Glpi\Event;

include('../inc/includes.php');

Session::checkLoginUser();

$category = new KnowbaseItem_KnowbaseItemCategory();

if (isset($_POST["add"])) {
    if (!isset($_POST['knowbaseitems_id']) || !isset($_POST['knowbaseitemcategories_id'])) {
        $message = __('Mandatory fields are not filled!');
        Session::addMessageAfterRedirect($message, false, ERROR);
        Html::back();
    }

    if ($category->add($_POST)) {
        Event::log(
            $_POST["knowbaseitems_id"],
            "knowbaseitem",
            4,
            "tracking",
            sprintf(__('%s adds a link with a category'), $_SESSION["glpiname"])
        );
    }
    Html::back();
}

Html::displayErrorAndDie("lost");