util.php

<?php
/* vim:set softtabstop=4 shiftwidth=4 expandtab: */
/**
 *
 * LICENSE: GNU Affero General Public License, version 3 (AGPLv3)
 * Copyright 2001 - 2016 Ampache.org
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

require_once 'lib/init.php';

header("Expires: Tuesday, 27 Mar 1984 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Pragma: no-cache");

// This is a little bit of a special file, it takes the
// content of $_SESSION['iframe']['target'] and does a header
// redirect to that spot!
if (isset($_SESSION['iframe']['target'])) {
    $target = $_SESSION['iframe']['target'];
    unset($_SESSION['iframe']['target']);
    header("Location: " . $target);
} else {
    // Prevent the update query as it's pointless
    define('NO_SESSION_UPDATE', '1');
}