calendarimporter/php/upload.php

<?php
/**
 * upload.php, Kopano calender to ics im/exporter
 *
 * Author: Christoph Haas <christoph.h@sprinternet.at>
 * 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
 *
 */

require_once(__DIR__ . "/../config.php");
require_once(__DIR__ . "/helper.php");

require_once(__DIR__ . '/../../../init.php');
require_once(__DIR__ . "/../../../server/includes/core/class.webappauthentication.php"); // for checking the session

use calendarimporter\Helper;

/* disable error printing - otherwise json communication might break... */
ini_set('display_errors', '0');

// check session
// otherwise a DOS attack might be possible
if (!WebAppAuthentication::getUserName() || WebAppAuthentication::getUserName() == "") {
    Helper::respondJSON(array('success' => false, 'error' => dgettext("plugin_calendarimporter", "Not authenticated!")));
    die();
}

if (isset($_FILES['icsdata']['tmp_name']) && is_readable($_FILES['icsdata']['tmp_name'])) {
    $destpath = PLUGIN_CALENDARIMPORTER_TMP_UPLOAD;
    $destpath .= $_FILES['icsdata']['name'] . Helper::randomstring();

    $result = move_uploaded_file($_FILES['icsdata']['tmp_name'], $destpath);

    if ($result) {
        Helper::respondJSON(array('success' => true, 'ics_file' => $destpath));
    } else {
        Helper::respondJSON(array('success' => false, 'error' => dgettext("plugin_calendarimporter", "File could not be moved to TMP path! Check plugin config and folder permissions!")));
    }
} else {
    Helper::respondJSON(array('success' => false, 'error' => dgettext("plugin_calendarimporter", "File could not be read by server, upload error!")));
}