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   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   * CAS user sync script.
  19   *
  20   * This script is meant to be called from a cronjob to sync moodle with the LDAP
  21   * backend in those setups where the LDAP backend acts as 'master'.
  22   *
  23   * Sample cron entry:
  24   * # 5 minutes past 4am
  25   * 5 4 * * * $sudo -u www-data /usr/bin/php /var/www/moodle/auth/ldap/cli/sync_users.php
  26   *
  27   * Notes:
  28   *   - it is required to use the web server account when executing PHP CLI scripts
  29   *   - you need to change the "www-data" to match the apache user account
  30   *   - use "su" if "sudo" not available
  31   *   - If you have a large number of users, you may want to raise the memory limits
  32   *     by passing -d momory_limit=256M
  33   *   - For debugging & better logging, you are encouraged to use in the command line:
  34   *     -d log_errors=1 -d error_reporting=E_ALL -d display_errors=0 -d html_errors=0
  35   *   - If you have a large number of users, you may want to raise the memory limits
  36   *     by passing -d momory_limit=256M
  37   *   - For debugging & better logging, you are encouraged to use in the command line:
  38   *     -d log_errors=1 -d error_reporting=E_ALL -d display_errors=0 -d html_errors=0
  39   *
  40   * Performance notes:
  41   * We have optimized it as best as we could for PostgreSQL and MySQL, with 27K students
  42   * we have seen this take 10 minutes.
  43   *
  44   * @package    auth_ldap
  45   * @copyright  2004 Martin Langhoff
  46   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  47   */
  48  
  49  define('CLI_SCRIPT', true);
  50  
  51  require(dirname(dirname(dirname(dirname(__FILE__)))).'/config.php'); // global moodle config file.
  52  require_once($CFG->dirroot.'/course/lib.php');
  53  
  54  // Ensure errors are well explained
  55  set_debugging(DEBUG_DEVELOPER, true);
  56  
  57  if (!is_enabled_auth('ldap')) {
  58      error_log('[AUTH LDAP] '.get_string('pluginnotenabled', 'auth_ldap'));
  59      die;
  60  }
  61  
  62  $ldapauth = get_auth_plugin('ldap');
  63  $ldapauth->sync_users(true);
  64