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Differences Between: [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   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  
  27  require_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  $login   = optional_param('loginpage', 0, PARAM_BOOL);
  34  
  35  // can be overridden by auth plugins
  36  if ($login) {
  37      $redirect = get_login_url();
  38  } else {
  39      $redirect = $CFG->wwwroot.'/';
  40  }
  41  
  42  if (!isloggedin()) {
  43      // no confirmation, user has already logged out
  44      require_logout();
  45      redirect($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  $authsequence = get_enabled_auth_plugins(); // auths, in sequence
  57  foreach($authsequence as $authname) {
  58      $authplugin = get_auth_plugin($authname);
  59      $authplugin->logoutpage_hook();
  60  }
  61  
  62  require_logout();
  63  
  64  redirect($redirect);