mirror of
https://github.com/moodle/moodle.git
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100 lines
4.1 KiB
PHP
100 lines
4.1 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Handles LTI 1.3 deep linking launches.
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*
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* There are 2 pathways through this page:
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* 1. When first making a deep linking launch from the platform. The launch data is cached at this point, pending user
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* authentication, and the page is set such that the post-authentication redirect will return here.
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* 2. The post-authentication redirect. The launch data is fetched from the session launch cache, and the resource
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* selection view is rendered.
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*
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* @package enrol_lti
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* @copyright 2021 Jake Dallimore <jrhdallimore@gmail.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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use enrol_lti\local\ltiadvantage\lib\http_client;
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use enrol_lti\local\ltiadvantage\lib\issuer_database;
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use enrol_lti\local\ltiadvantage\lib\launch_cache_session;
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use enrol_lti\local\ltiadvantage\repository\application_registration_repository;
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use enrol_lti\local\ltiadvantage\repository\deployment_repository;
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use enrol_lti\local\ltiadvantage\repository\published_resource_repository;
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use Packback\Lti1p3\ImsStorage\ImsCookie;
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use Packback\Lti1p3\LtiMessageLaunch;
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use Packback\Lti1p3\LtiServiceConnector;
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require_once(__DIR__ . '/../../config.php');
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global $OUTPUT, $PAGE, $CFG;
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require_once($CFG->libdir . '/filelib.php');
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$idtoken = optional_param('id_token', null, PARAM_RAW);
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$launchid = optional_param('launchid', null, PARAM_RAW);
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if (!is_enabled_auth('lti')) {
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throw new moodle_exception('pluginnotenabled', 'auth', '', get_string('pluginname', 'auth_lti'));
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}
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if (!enrol_is_enabled('lti')) {
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throw new moodle_exception('enrolisdisabled', 'enrol_lti');
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}
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if (empty($idtoken) && empty($launchid)) {
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throw new coding_exception('Error: launch requires id_token');
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}
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// First launch from the platform: get launch data and cache it in case the user's not authenticated.
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$sesscache = new launch_cache_session();
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$issdb = new issuer_database(new application_registration_repository(), new deployment_repository());
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$cookie = new ImsCookie();
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$serviceconnector = new LtiServiceConnector($sesscache, new http_client(new curl()));
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if ($idtoken) {
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$messagelaunch = LtiMessageLaunch::new($issdb, $sesscache, $cookie, $serviceconnector)
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->validate();
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}
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if ($launchid) {
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$messagelaunch = LtiMessageLaunch::fromCache($launchid, $issdb, $sesscache, $serviceconnector);
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}
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if (empty($messagelaunch)) {
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throw new moodle_exception('Bad launch. Deep linking launch data could not be found');
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}
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// Authenticate the instructor.
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// Deep linking cannot use resource-specific provisioning modes, so it just uses a sensible 'existing accounts only' mode.
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$auth = get_auth_plugin('lti');
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$auth->complete_login(
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$messagelaunch->getLaunchData(),
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new moodle_url('/enrol/lti/launch_deeplink.php', ['launchid' => $messagelaunch->getLaunchId()]),
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auth_plugin_lti::PROVISIONING_MODE_PROMPT_EXISTING_ONLY
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);
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require_login(null, false);
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global $USER, $CFG;
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$PAGE->set_context(context_system::instance());
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$url = new moodle_url('/enrol/lti/launch_deeplink.php');
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$PAGE->set_url($url);
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$PAGE->set_pagelayout('popup');
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$PAGE->set_title(get_string('opentool', 'enrol_lti'));
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// Get all the published_resource view objects and render them for selection.
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global $USER;
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$resourcerepo = new published_resource_repository();
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$resources = $resourcerepo->find_all_for_user($USER->id);
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$renderer = $PAGE->get_renderer('enrol_lti');
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echo $OUTPUT->header();
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echo $renderer->render_published_resource_selection_view($messagelaunch, $resources);
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echo $OUTPUT->footer();
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