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Developer Documentation

  • Bug fixes for general core bugs in 3.10.x will end 8 November 2021 (12 months).
  • Bug fixes for security issues in 3.10.x will end 9 May 2022 (18 months).
  • PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.
  •    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   * An oauth2 redirection endpoint which can be used for an application:
      20   * http://tools.ietf.org/html/draft-ietf-oauth-v2-26#section-3.1.2
      21   *
      22   * This is used because some oauth servers will not allow a redirect urls
      23   * with get params (like repository callback) and that needs to be called
      24   * using the state param.
      25   *
      26   * @package    core
      27   * @copyright  2012 Dan Poltawski
      28   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
      29   */
      30  
      31  require_once(__DIR__ . '/../config.php');
      32  
      33  $error = optional_param('error', '', PARAM_RAW);
      34  if ($error) {
      35      $message = optional_param('error_description', '', PARAM_RAW);
      36      if ($message) {
      37          print_error($message);
      38      } else {
      39          print_error($error);
      40      }
      41      die();
      42  }
      43  
      44  // The authorization code generated by the authorization server.
      45  $code = required_param('code', PARAM_RAW);
      46  // The state parameter we've given (used in moodle as a redirect url).
      47  $state = required_param('state', PARAM_LOCALURL);
      48  
      49  $redirecturl = new moodle_url($state);
      50  $params = $redirecturl->params();
      51  
      52  if (isset($params['sesskey']) and confirm_sesskey($params['sesskey'])) {
      53      $redirecturl->param('oauth2code', $code);
      54      redirect($redirecturl);
      55  } else {
      56      print_error('invalidsesskey');
      57  }