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 back to Moodle from the tool provider

 *

 * @package mod_lti

 * @copyright  Copyright (c) 2011 Moodlerooms Inc. (http://www.moodlerooms.com)

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

 * @author     Chris Scribner

 */

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

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

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

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

$instanceid = optional_param('instanceid', 0, PARAM_INT);

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

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

$unsigned = optional_param('unsigned', '0', PARAM_INT);

$launchcontainer = optional_param('launch_container', LTI_LAUNCH_CONTAINER_WINDOW, PARAM_INT);

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

$lti = null;

$context = null;

if (!empty($instanceid)) {

    $lti = $DB->get_record('lti', array('id' => $instanceid), '*', MUST_EXIST);

    $cm = get_coursemodule_from_instance('lti', $lti->id, $lti->course, false, MUST_EXIST);

    $context = context_module::instance($cm->id);

}

require_login($course);

require_sesskey();

if (!empty($errormsg) || !empty($msg)) {

    $url = new moodle_url('/mod/lti/return.php', array('course' => $courseid));

    $PAGE->set_url($url);

    $pagetitle = strip_tags($course->shortname);

    $PAGE->set_title($pagetitle);

    $PAGE->set_heading($course->fullname);

    // Avoid frame-in-frame action.

    if ($launchcontainer == LTI_LAUNCH_CONTAINER_EMBED || $launchcontainer == LTI_LAUNCH_CONTAINER_EMBED_NO_BLOCKS) {

        $PAGE->set_pagelayout('embedded');

    } else {

        $PAGE->set_pagelayout('incourse');

    }

    echo $OUTPUT->header();

    if (!empty($lti) and !empty($context)) {

        echo $OUTPUT->heading(format_string($lti->name, true, array('context' => $context)));

    }

}

if (!empty($errormsg)) {

    echo get_string('lti_launch_error', 'lti');

    p($errormsg);

    if ($unsigned == 1) {

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

        echo '<br /><br />';

        $links = new stdClass();

        if (has_capability('mod/lti:addcoursetool', $contextcourse)) {

            $coursetooleditor = new moodle_url('mod/lti/coursetools.php', ['id' => $courseid]);

            $links->course_tool_editor = $coursetooleditor->out(false);

            echo get_string('lti_launch_error_unsigned_help', 'lti', $links);

        }

        if (!empty($lti) && has_capability('mod/lti:requesttooladd', $contextcourse)) {

            $adminrequesturl = new moodle_url('/mod/lti/request_tool.php', array('instanceid' => $lti->id, 'sesskey' => sesskey()));

            $links->admin_request_url = $adminrequesturl->out(false);

            echo get_string('lti_launch_error_tool_request', 'lti', $links);

        }

    }

    echo $OUTPUT->footer();

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

    p($msg);

    echo $OUTPUT->footer();

} else {

    $courseurl = new moodle_url('/course/view.php', array('id' => $courseid));

    $url = $courseurl->out();

    // Avoid frame-in-frame action.

    if ($launchcontainer == LTI_LAUNCH_CONTAINER_EMBED || $launchcontainer == LTI_LAUNCH_CONTAINER_EMBED_NO_BLOCKS) {

        // Output a page containing some script to break out of frames and redirect them.

        echo '<html><body>';

        $script = "

            <script type=\"text/javascript\">

            //<![CDATA[

                if(window != top){

                    top.location.href = '{$url}';

                } else {

                    window.location.href = '{$url}';

                }

            //]]

            </script>

        ";

        $clickhere = get_string('return_to_course', 'lti', (object)array('link' => $url));

        $noscript = "

            <noscript>

                {$clickhere}

            </noscript>

        ";

        echo $script;

        echo $noscript;

        echo '</body></html>';

    } else {

        // If no error, take them back to the course.

        redirect($url);

    }

}