Current File : /home/vacivi36/ava/mod/lti/startltiadvregistration.php
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Redirect the user to registration with token and openid config url as query params.
*
* @package mod_lti
* @copyright 2020 Cengage
* @author Claude Vervoort
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
use Firebase\JWT\JWT;
use mod_lti\local\ltiopenid\jwks_helper;
use mod_lti\local\ltiopenid\registration_helper;
require_once(__DIR__ . '/../../config.php');
require_once($CFG->libdir.'/weblib.php');
require_once($CFG->dirroot . '/mod/lti/locallib.php');
require_login();
$context = context_system::instance();
require_capability('moodle/site:config', $context);
$starturl = required_param('url', PARAM_URL);
$typeid = optional_param('type', -1, PARAM_INT);
$types = lti_get_tools_by_url($starturl, null);
if (!empty($types) && $typeid == -1) {
// There are matching types for the registration domain, let's prompt the user to upgrade.
$pageurl = new moodle_url('/mod/lti/startltiadvregistration.php');
$PAGE->set_context($context);
$PAGE->set_url($pageurl);
$PAGE->set_pagelayout('maintenance');
$output = $PAGE->get_renderer('mod_lti');
$page = new \mod_lti\output\registration_upgrade_choice_page($types, $starturl);
echo $output->header();
echo $output->render($page);
echo $output->footer();
} else {
// Let's actually start the registration process by launching the tool registration
// endpoint with the registration token and the site config url.
require_sesskey();
$sub = registration_helper::get()->new_clientid();
$scope = registration_helper::REG_TOKEN_OP_NEW_REG;
if ($typeid > 0) {
// In the context of an update, the sub is the id of the type.
$sub = strval($typeid);
$scope = registration_helper::REG_TOKEN_OP_UPDATE_REG;
}
$now = time();
$token = [
"sub" => $sub,
"scope" => $scope,
"iat" => $now,
"exp" => $now + HOURSECS
];
$privatekey = jwks_helper::get_private_key();
$regtoken = JWT::encode($token, $privatekey['key'], 'RS256', $privatekey['kid']);
$confurl = new moodle_url('/mod/lti/openid-configuration.php');
$url = new moodle_url($starturl);
$url->param('openid_configuration', $confurl->out(false));
$url->param('registration_token', $regtoken);
header("Location: ".$url->out(false));
}
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