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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   * Extdb user sync script.
  19   *
  20   * This script is meant to be called from a system cronjob to
  21   * sync moodle user accounts with external database.
  22   * It is required when using internal passwords (== passwords not defined in external database).
  23   *
  24   * Sample cron entry:
  25   * # 5 minutes past 4am
  26   * 5 4 * * * sudo -u www-data /usr/bin/php /var/www/moodle/auth/db/cli/sync_users.php
  27   *
  28   * Notes:
  29   *   - it is required to use the web server account when executing PHP CLI scripts
  30   *   - you need to change the "www-data" to match the apache user account
  31   *   - use "su" if "sudo" not available
  32   *   - If you have a large number of users, you may want to raise the memory limits
  33   *     by passing -d memory_limit=256M
  34   *   - For debugging & better logging, you are encouraged to use in the command line:
  35   *     -d log_errors=1 -d error_reporting=E_ALL -d display_errors=0 -d html_errors=0
  36   *
  37   * Performance notes:
  38   * + The code is simpler, but not as optimized as its LDAP counterpart.
  39   *
  40   * @package    auth_db
  41   * @copyright  2006 Martin Langhoff
  42   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  43   */
  44  
  45  define('CLI_SCRIPT', true);
  46  
  47  require(__DIR__.'/../../../config.php');
  48  require_once("$CFG->libdir/clilib.php");
  49  
  50  // Now get cli options.
  51  list($options, $unrecognized) = cli_get_params(array('noupdate'=>false, 'verbose'=>false, 'help'=>false), array('n'=>'noupdate', 'v'=>'verbose', 'h'=>'help'));
  52  
  53  if ($unrecognized) {
  54      $unrecognized = implode("\n  ", $unrecognized);
  55      cli_error(get_string('cliunknowoption', 'admin', $unrecognized));
  56  }
  57  
  58  if ($options['help']) {
  59      $help =
  60  "Execute user account sync with external database.
  61  The auth_db plugin must be enabled and properly configured.
  62  
  63  Options:
  64  -n, --noupdate        Skip update of existing users
  65  -v, --verbose         Print verbose progress information
  66  -h, --help            Print out this help
  67  
  68  Example:
  69  \$ sudo -u www-data /usr/bin/php auth/db/cli/sync_users.php
  70  
  71  Sample cron entry:
  72  # 5 minutes past 4am
  73  5 4 * * * sudo -u www-data /usr/bin/php /var/www/moodle/auth/db/cli/sync_users.php
  74  ";
  75  
  76      echo $help;
  77      die;
  78  }
  79  
  80  if (!is_enabled_auth('db')) {
  81      cli_error('auth_db plugin is disabled, synchronisation stopped', 2);
  82  }
  83  
  84  if (empty($options['verbose'])) {
  85      $trace = new null_progress_trace();
  86  } else {
  87      $trace = new text_progress_trace();
  88  }
  89  
  90  $update = empty($options['noupdate']);
  91  
  92  /** @var auth_plugin_db $dbauth */
  93  $dbauth = get_auth_plugin('db');
  94  $result = $dbauth->sync_users($trace, $update);
  95  
  96  exit($result);