badges/oauth2callback.php

   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  * Verify authorization callback.
  19  *
  20  * @package    core_badges
  21  * @copyright  2020 Tung Thai
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  * @author     Tung Thai <Tung.ThaiDuc@nashtechglobal.com>
  24  */
  25 require_once(__DIR__ . '/../config.php');
  26
  27 $error = optional_param('error', '', PARAM_RAW);
  28
  29 if ($error) {
  30     $message = optional_param('error_description', '', PARAM_RAW);
  31     if ($message) {
  32         print_error($message);
  33     } else {
  34         print_error($error);
  35     }
  36     die();
  37 }
  38
  39 require_login();
  40
  41 // The authorization code generated by the authorization server.
  42 $code = required_param('code', PARAM_RAW);
  43 $scope = required_param('scope', PARAM_RAW);
  44
  45 // The state parameter we've given (used in moodle as a redirect url).
  46 $state = required_param('state', PARAM_LOCALURL);
  47
  48 $redirecturl = new moodle_url($state);
  49 $params = $redirecturl->params();
  50
  51 if (isset($params['sesskey']) and confirm_sesskey($params['sesskey'])) {
  52     $redirecturl->param('oauth2code', $code);
  53     $redirecturl->param('scope', $scope);
  54     redirect($redirecturl);
  55 } else {
  56     print_error('invalidsesskey');
  57 }