mod/lti/openid-registration.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  * This file receives a registration request along with the registration token and returns a client_id.
  19  *
  20  * @copyright  2020 Claude Vervoort (Cengage), Carlos Costa, Adrian Hutchinson (Macgraw Hill)
  21  * @package    mod_lti
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24 define('NO_DEBUG_DISPLAY', true);
  25 define('NO_MOODLE_COOKIES', true);
  26
  27 use mod_lti\local\ltiopenid\registration_helper;
  28 use mod_lti\local\ltiopenid\registration_exception;
  29
  30 require_once(__DIR__ . '/../../config.php');
  31 require_once($CFG->dirroot . '/mod/lti/locallib.php');
  32
  33 $code = 200;
  34 $message = '';
  35 // Retrieve registration token from Bearer Authorization header.
  36 $authheader = moodle\mod\lti\OAuthUtil::get_headers() ['Authorization'] ?? '';
  37 if (!($authheader && substr($authheader, 0, 7) == 'Bearer ')) {
  38     $message = 'missing_registration_token';
  39     $code = 401;
  40 } else {
  41     $registrationpayload = json_decode(file_get_contents('php://input'), true);
  42
  43     // Registers tool.
  44     $type = new stdClass();
  45     $type->state = LTI_TOOL_STATE_PENDING;
  46     try {
  47         $clientid = registration_helper::validate_registration_token(trim(substr($authheader, 7)));
  48         $config = registration_helper::registration_to_config($registrationpayload, $clientid);
  49         $typeid = lti_add_type($type, clone $config);
  50         $message = json_encode(registration_helper::config_to_registration($config, $typeid));
  51         header('Content-Type: application/json; charset=utf-8');
  52     } catch (registration_exception $e) {
  53         $code = $e->getCode();
  54         $message = $e->getMessage();
  55     }
  56 }
  57 $response = new \mod_lti\local\ltiservice\response();
  58 // Set code.
  59 $response->set_code($code);
  60 // Set body.
  61 $response->set_body($message);
  62 $response->send();