2 // This file is part of Moodle - http://moodle.org/
4 // Moodle is free software: you can redistribute it and/or modify
5 // it under the terms of the GNU General Public License as published by
6 // the Free Software Foundation, either version 3 of the License, or
7 // (at your option) any later version.
9 // Moodle is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License
15 // along with Moodle. If not, see <http://www.gnu.org/licenses/>.
18 * Handle the return back to Moodle from the tool provider
22 * @copyright 2011 onwards MRTODO
23 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
26 require_once('../../config.php');
27 require_once($CFG->dirroot.'/mod/lti/lib.php');
29 $courseid = required_param('course', PARAM_INT);
30 $instanceid = required_param('instanceid', PARAM_INT);
32 $errormsg = optional_param('lti_errormsg', '', PARAM_RAW);
33 $unsigned = optional_param('unsigned', '0', PARAM_INT);
35 $launchcontainer = optional_param('launch_container', LTI_LAUNCH_CONTAINER_WINDOW, PARAM_INT);
37 $course = $DB->get_record('course', array('id' => $courseid));
39 require_login($course);
41 if (!empty($errormsg)) {
42 $url = new moodle_url('/mod/lti/return.php', array('course' => $courseid));
45 $pagetitle = strip_tags($course->shortname);
46 $PAGE->set_title($pagetitle);
47 $PAGE->set_heading($course->fullname);
49 //Avoid frame-in-frame action
50 if ($launchcontainer == LTI_LAUNCH_CONTAINER_EMBED || $launchcontainer == LTI_LAUNCH_CONTAINER_EMBED_NO_BLOCKS) {
51 $PAGE->set_pagelayout('embedded');
53 $PAGE->set_pagelayout('incourse');
56 echo $OUTPUT->header();
58 echo get_string('lti_launch_error', 'lti');
60 echo htmlspecialchars($errormsg);
62 $canaddtools = has_capability('mod/lti:addcoursetool', get_context_instance(CONTEXT_COURSE, $courseid));
64 if ($unsigned == 1 && $canaddtools) {
67 $links = new stdClass();
68 $coursetooleditor = new moodle_url('/mod/lti/instructor_edit_tool_type.php', array('course' => $courseid, 'action' => 'add'));
69 $links->course_tool_editor = $coursetooleditor->out(false);
71 $adminrequesturl = new moodle_url('/mod/lti/request_tool.php', array('instanceid' => $instanceid));
72 $links->admin_request_url = $adminrequesturl->out(false);
74 echo get_string('lti_launch_error_unsigned_help', 'lti', $links);
76 echo get_string('lti_launch_error_tool_request', 'lti', $links);
79 echo $OUTPUT->footer();
81 $courseurl = new moodle_url('/course/view.php', array('id' => $courseid));
82 $url = $courseurl->out();
84 //Avoid frame-in-frame action
85 if ($launchcontainer == LTI_LAUNCH_CONTAINER_EMBED || $launchcontainer == LTI_LAUNCH_CONTAINER_EMBED_NO_BLOCKS) {
86 //Output a page containing some script to break out of frames and redirect them
91 <script type=\"text/javascript\">
94 top.location.href = '{$url}';
100 $clickhere = get_string('return_to_course', 'lti', (object)array('link' => $url));
111 echo '</body></html>';
113 //If no error, take them back to the course