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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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.
//
// Moodle 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 Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* A script to serve files from web service client
*
* @package core_webservice
* @copyright 2011 Dongsheng Cai <dongsheng@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
/**
* AJAX_SCRIPT - exception will be converted into JSON
*/
define('AJAX_SCRIPT', true);
/**
* NO_MOODLE_COOKIES - we don't want any cookie
*/
define('NO_MOODLE_COOKIES', true);
require_once(__DIR__ . '/../config.php');
require_once($CFG->libdir . '/filelib.php');
require_once($CFG->dirroot . '/webservice/lib.php');
// Allow CORS requests.
header('Access-Control-Allow-Origin: *');
// Authenticate the user.
$token = required_param('token', PARAM_ALPHANUM);
// Use preview in order to display the preview of the file (e.g. "thumb" for a thumbnail).
$preview = optional_param('preview', null, PARAM_ALPHANUM);
// Offline means download the file from the repository and serve it, even if it was an external link.
// The repository may have to export the file to an offline format.
$offline = optional_param('offline', 0, PARAM_BOOL);
$webservicelib = new webservice();
$authenticationinfo = $webservicelib->authenticate_user($token);
// Check the service allows file download.
$enabledfiledownload = (int) ($authenticationinfo['service']->downloadfiles);
if (empty($enabledfiledownload)) {
throw new webservice_access_exception('Web service file downloading must be enabled in external service settings');
}
// Finally we can serve the file :).
$relativepath = get_file_argument();
file_pluginfile($relativepath, 0, $preview, $offline);