admin/oauth2callback.php

   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 }