.
/**
* Handle the return back to Moodle from the tool provider
*
* @package mod
* @subpackage 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 = required_param('instanceid', PARAM_INT);
$errormsg = optional_param('lti_errormsg', '', PARAM_RAW);
$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' => $courseid));
require_login($course);
if (!empty($errormsg)) {
$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 $OUTPUT->header();
echo get_string('lti_launch_error', 'lti');
echo htmlspecialchars($errormsg);
$canaddtools = has_capability('mod/lti:addcoursetool', get_context_instance(CONTEXT_COURSE, $courseid));
if ($unsigned == 1 && $canaddtools) {
echo '
';
$links = new stdClass();
$coursetooleditor = new moodle_url('/mod/lti/instructor_edit_tool_type.php', array('course' => $courseid, 'action' => 'add'));
$links->course_tool_editor = $coursetooleditor->out(false);
$adminrequesturl = new moodle_url('/mod/lti/request_tool.php', array('instanceid' => $instanceid));
$links->admin_request_url = $adminrequesturl->out(false);
echo get_string('lti_launch_error_unsigned_help', 'lti', $links);
echo get_string('lti_launch_error_tool_request', 'lti', $links);
}
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 '';
$script = "
";
$clickhere = get_string('return_to_course', 'lti', (object)array('link' => $url));
$noscript = "
";
echo $script;
echo $noscript;
echo '';
} else {
//If no error, take them back to the course
redirect($url);
}
}