mod/lti/launch.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   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.
   8 //
   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.
  13 //
  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/>.
  16 //
  17 // This file is part of BasicLTI4Moodle
  18 //
  19 // BasicLTI4Moodle is an IMS BasicLTI (Basic Learning Tools for Interoperability)
  20 // consumer for Moodle 1.9 and Moodle 2.0. BasicLTI is a IMS Standard that allows web
  21 // based learning tools to be easily integrated in LMS as native ones. The IMS BasicLTI
  22 // specification is part of the IMS standard Common Cartridge 1.1 Sakai and other main LMS
  23 // are already supporting or going to support BasicLTI. This project Implements the consumer
  24 // for Moodle. Moodle is a Free Open source Learning Management System by Martin Dougiamas.
  25 // BasicLTI4Moodle is a project iniciated and leaded by Ludo(Marc Alier) and Jordi Piguillem
  26 // at the GESSI research group at UPC.
  27 // SimpleLTI consumer for Moodle is an implementation of the early specification of LTI
  28 // by Charles Severance (Dr Chuck) htp://dr-chuck.com , developed by Jordi Piguillem in a
  29 // Google Summer of Code 2008 project co-mentored by Charles Severance and Marc Alier.
  30 //
  31 // BasicLTI4Moodle is copyright 2009 by Marc Alier Forment, Jordi Piguillem and Nikolas Galanis
  32 // of the Universitat Politecnica de Catalunya http://www.upc.edu
  33 // Contact info: Marc Alier Forment granludo @ gmail.com or marc.alier @ upc.edu.
  34
  35 /**
  36  * This file contains all necessary code to view a lti activity instance
  37  *
  38  * @package mod_lti
  39  * @copyright  2009 Marc Alier, Jordi Piguillem, Nikolas Galanis
  40  *  marc.alier@upc.edu
  41  * @copyright  2009 Universitat Politecnica de Catalunya http://www.upc.edu
  42  * @author     Marc Alier
  43  * @author     Jordi Piguillem
  44  * @author     Nikolas Galanis
  45  * @author     Chris Scribner
  46  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  47  */
  48
  49 require_once("../../config.php");
  50 require_once($CFG->dirroot.'/mod/lti/lib.php');
  51 require_once($CFG->dirroot.'/mod/lti/locallib.php');
  52
  53 $id = required_param('id', PARAM_INT); // Course Module ID.
  54 $triggerview = optional_param('triggerview', 1, PARAM_BOOL);
  55
  56 $cm = get_coursemodule_from_id('lti', $id, 0, false, MUST_EXIST);
  57 $lti = $DB->get_record('lti', array('id' => $cm->instance), '*', MUST_EXIST);
  58
  59 $typeid = $lti->typeid;
  60 if (empty($typeid) && ($tool = lti_get_tool_by_url_match($lti->toolurl))) {
  61     $typeid = $tool->id;
  62 }
  63 if ($typeid) {
  64     $config = lti_get_type_type_config($typeid);
  65     if ($config->lti_ltiversion === LTI_VERSION_1P3) {
  66         if (!isset($SESSION->lti_initiatelogin_status)) {
  67             echo lti_initiate_login($cm->course, $id, $lti, $config);
  68             exit;
  69         } else {
  70             unset($SESSION->lti_initiatelogin_status);
  71         }
  72     }
  73 }
  74
  75 $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
  76
  77 $context = context_module::instance($cm->id);
  78
  79 require_login($course, true, $cm);
  80 require_capability('mod/lti:view', $context);
  81
  82 // Completion and trigger events.
  83 if ($triggerview) {
  84     lti_view($lti, $course, $cm, $context);
  85 }
  86
  87 $lti->cmid = $cm->id;
  88 lti_launch_tool($lti);
  89