Proyectos de Subversion Moodle

<?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/>.

/**

 * Handles LTI 1.3 deep linking launches.

 *

 * There are 2 pathways through this page:

 * 1. When first making a deep linking launch from the platform. The launch data is cached at this point, pending user

 * authentication, and the page is set such that the post-authentication redirect will return here.

 * 2. The post-authentication redirect. The launch data is fetched from the session launch cache, and the resource

 * selection view is rendered.

 *

 * @package    enrol_lti

 * @copyright  2021 Jake Dallimore <jrhdallimore@gmail.com>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

use core\http_client;

use enrol_lti\local\ltiadvantage\lib\lti_cookie;

use enrol_lti\local\ltiadvantage\lib\issuer_database;

use enrol_lti\local\ltiadvantage\lib\launch_cache_session;

use enrol_lti\local\ltiadvantage\repository\application_registration_repository;

use enrol_lti\local\ltiadvantage\repository\deployment_repository;

use enrol_lti\local\ltiadvantage\repository\published_resource_repository;

use Packback\Lti1p3\LtiMessageLaunch;

use Packback\Lti1p3\LtiServiceConnector;

require_once(__DIR__ . '/../../config.php');

global $OUTPUT, $PAGE, $CFG;

require_once($CFG->libdir . '/filelib.php');

$idtoken = optional_param('id_token', null, PARAM_RAW);

$launchid = optional_param('launchid', null, PARAM_RAW);

if (!is_enabled_auth('lti')) {

    throw new moodle_exception('pluginnotenabled', 'auth', '', get_string('pluginname', 'auth_lti'));

}

if (!enrol_is_enabled('lti')) {

    throw new moodle_exception('enrolisdisabled', 'enrol_lti');

}

if (empty($idtoken) && empty($launchid)) {

    throw new coding_exception('Error: launch requires id_token');

}

// First launch from the platform: get launch data and cache it in case the user's not authenticated.

$sesscache = new launch_cache_session();

$issdb = new issuer_database(new application_registration_repository(), new deployment_repository());

$cookie = new lti_cookie();

$serviceconnector = new LtiServiceConnector($sesscache, new http_client());

if ($idtoken) {

    $messagelaunch = LtiMessageLaunch::new($issdb, $sesscache, $cookie, $serviceconnector)

        ->initialize($_POST);

}

if ($launchid) {

    $messagelaunch = LtiMessageLaunch::fromCache($launchid, $issdb, $sesscache, $cookie, $serviceconnector);

}

if (empty($messagelaunch)) {

    throw new moodle_exception('Bad launch. Deep linking launch data could not be found');

}

// Authenticate the instructor.

// Deep linking cannot use resource-specific provisioning modes, so it just uses a sensible 'existing accounts only' mode.

$auth = get_auth_plugin('lti');

$auth->complete_login(

    $messagelaunch->getLaunchData(),

    new moodle_url('/enrol/lti/launch_deeplink.php', ['launchid' => $messagelaunch->getLaunchId()]),

    auth_plugin_lti::PROVISIONING_MODE_PROMPT_EXISTING_ONLY

);

require_login(null, false);

global $USER, $CFG;

$PAGE->set_context(context_system::instance());

$url = new moodle_url('/enrol/lti/launch_deeplink.php');

$PAGE->set_url($url);

$PAGE->set_pagelayout('popup');

$PAGE->set_title(get_string('opentool', 'enrol_lti'));

// Get all the published_resource view objects and render them for selection.

global $USER;

$resourcerepo = new published_resource_repository();

$resources = $resourcerepo->find_all_for_user($USER->id);

$renderer = $PAGE->get_renderer('enrol_lti');

echo $OUTPUT->header();

echo $renderer->render_published_resource_selection_view($messagelaunch, $resources);

echo $OUTPUT->footer();