* Copyright (C) 2012-2018 Christoph Haas * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ namespace calendarimporter; class DownloadHandler { /** * Download the given vcf file. * @return boolean */ public static function doDownload() { if (isset($_GET["token"])) { $token = $_GET["token"]; } else { return false; } if (isset($_GET["filename"])) { $filename = $_GET["filename"]; } else { return false; } // validate token if (!preg_match('/^[a-zA-Z0-9]+$/', $token)) { // token is a md5 hash return false; } $file = PLUGIN_CALENDARIMPORTER_TMP_UPLOAD . "ics_" . $token . ".ics"; if (!file_exists($file)) { // invalid token return false; } // set headers here header('Content-Disposition: attachment; filename="' . $filename . '"'); // no caching header('Expires: 0'); // set expiration time header('Content-Description: File Transfer'); header('Cache-Control: must-revalidate, post-check=0, pre-check=0'); header('Content-Length: ' . filesize($file)); header('Content-Type: application/octet-stream'); header('Pragma: public'); flush(); // print the downloaded file readfile($file); ignore_user_abort(true); unlink($file); return true; } }