1<?php 2 3// This file is part of Moodle - http://moodle.org/ 4// 5// Moodle is free software: you can redistribute it and/or modify 6// it under the terms of the GNU General Public License as published by 7// the Free Software Foundation, either version 3 of the License, or 8// (at your option) any later version. 9// 10// Moodle is distributed in the hope that it will be useful, 11// but WITHOUT ANY WARRANTY; without even the implied warranty of 12// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13// GNU General Public License for more details. 14// 15// You should have received a copy of the GNU General Public License 16// along with Moodle. If not, see <http://www.gnu.org/licenses/>. 17 18/** 19 * Logs the user out and sends them to the home page 20 * 21 * @package core 22 * @subpackage auth 23 * @copyright 1999 onwards Martin Dougiamas http://dougiamas.com 24 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 25 */ 26 27require_once('../config.php'); 28 29$PAGE->set_url('/login/logout.php'); 30$PAGE->set_context(context_system::instance()); 31 32$sesskey = optional_param('sesskey', '__notpresent__', PARAM_RAW); // we want not null default to prevent required sesskey warning 33$login = optional_param('loginpage', 0, PARAM_BOOL); 34 35// can be overridden by auth plugins 36if ($login) { 37 $redirect = get_login_url(); 38} else { 39 $redirect = $CFG->wwwroot.'/'; 40} 41 42if (!isloggedin()) { 43 // no confirmation, user has already logged out 44 require_logout(); 45 redirect($redirect); 46 47} else if (!confirm_sesskey($sesskey)) { 48 $PAGE->set_title($SITE->fullname); 49 $PAGE->set_heading($SITE->fullname); 50 echo $OUTPUT->header(); 51 echo $OUTPUT->confirm(get_string('logoutconfirm'), new moodle_url($PAGE->url, array('sesskey'=>sesskey())), $CFG->wwwroot.'/'); 52 echo $OUTPUT->footer(); 53 die; 54} 55 56$authsequence = get_enabled_auth_plugins(); // auths, in sequence 57foreach($authsequence as $authname) { 58 $authplugin = get_auth_plugin($authname); 59 $authplugin->logoutpage_hook(); 60} 61 62require_logout(); 63 64redirect($redirect);