lib/sessionkeepalive_ajax.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * Ensure that session is kept alive.
  19  *
  20  * @copyright 2014 Andrew Nicols
  21  * @package   core
  22  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 define('AJAX_SCRIPT', true);
  26 require_once(dirname(__DIR__) . '/config.php');
  27
  28 // Require the session key - want to make sure that this isn't called
  29 // maliciously to keep a session alive longer than intended.
  30 if (!confirm_sesskey()) {
  31     header('HTTP/1.1 403 Forbidden');
  32     print_error('invalidsesskey');
  33 }
  34
  35 // Update the session.
  36 \core\session\manager::touch_session(session_id());