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/>.

/**

 * Handle the return from the Tool Provider after selecting a content item.

 *

 * @package mod_lti

 * @copyright  2015 Vital Source Technologies http://vitalsource.com

 * @author     Stephen Vickers

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

 */

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

require_once($CFG->dirroot . '/mod/lti/locallib.php');

$id = required_param('id', PARAM_INT);

$courseid = required_param('course', PARAM_INT);

$jwt = optional_param('JWT', '', PARAM_RAW);

$context = context_course::instance($courseid);

$pageurl = new moodle_url('/mod/lti/contentitem_return.php');

$PAGE->set_url($pageurl);

$PAGE->set_pagelayout('popup');

$PAGE->set_context($context);

// Cross-Site causes the cookie to be lost if not POSTed from same site.

global $_POST;

if (!empty($_POST["repost"])) {

    // Unset the param so that LTI 1.1 signature validation passes.

    unset($_POST["repost"]);

} else if (!isloggedin()) {

    header_remove("Set-Cookie");

    $output = $PAGE->get_renderer('mod_lti');

    $page = new \mod_lti\output\repost_crosssite_page($_SERVER['REQUEST_URI'], $_POST);

    echo $output->header();

    echo $output->render($page);

    echo $output->footer();

    return;

}

if (!empty($jwt)) {

    $params = lti_convert_from_jwt($id, $jwt);

    $consumerkey = $params['oauth_consumer_key'] ?? '';

    $messagetype = $params['lti_message_type'] ?? '';

    $version = $params['lti_version'] ?? '';

    $items = $params['content_items'] ?? '';

    $errormsg = $params['lti_errormsg'] ?? '';

    $msg = $params['lti_msg'] ?? '';

} else {

    $consumerkey = required_param('oauth_consumer_key', PARAM_RAW);

    $messagetype = required_param('lti_message_type', PARAM_TEXT);

    $version = required_param('lti_version', PARAM_TEXT);

    $items = optional_param('content_items', '', PARAM_RAW);

    $errormsg = optional_param('lti_errormsg', '', PARAM_TEXT);

    $msg = optional_param('lti_msg', '', PARAM_TEXT);

    lti_verify_oauth_signature($id, $consumerkey);

}

$course = $DB->get_record('course', array('id' => $courseid), '*', MUST_EXIST);

require_login($course);

require_sesskey();

require_capability('moodle/course:manageactivities', $context);

require_capability('mod/lti:addcoursetool', $context);

$redirecturl = null;

$returndata = null;

if (empty($errormsg) && !empty($items)) {

    try {

        $returndata = lti_tool_configuration_from_content_item($id, $messagetype, $version, $consumerkey, $items);

    } catch (moodle_exception $e) {

        $errormsg = $e->getMessage();

    }

}

echo $OUTPUT->header();

// Call JS module to redirect the user to the course page or close the dialogue on error/cancel.

$PAGE->requires->js_call_amd('mod_lti/contentitem_return', 'init', [$returndata]);

echo $OUTPUT->footer();

// Add messages to notification stack for rendering later.

if ($errormsg) {

    // Content item selection has encountered an error.

    \core\notification::error($errormsg);

} else if (!empty($returndata)) {

    // Means success.

    if (!$msg) {

        $msg = get_string('successfullyfetchedtoolconfigurationfromcontent', 'lti');

    }

    \core\notification::success($msg);

}