mod/lti/ajax.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 /**
  18  * AJAX service used when adding an External Tool.
  19  *
  20  * It is used to provide immediate feedback
  21  * of which tool provider is to be used based on the Launch URL.
  22  *
  23  * @package    mod_lti
  24  * @subpackage xml
  25  * @copyright Copyright (c) 2011 Moodlerooms Inc. (http://www.moodlerooms.com)
  26  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  27  * @author     Chris Scribner
  28  */
  29 define('AJAX_SCRIPT', true);
  30
  31 require_once(__DIR__ . "/../../config.php");
  32 require_once($CFG->dirroot . '/mod/lti/locallib.php');
  33
  34 $courseid = required_param('course', PARAM_INT);
  35 $context = context_course::instance($courseid);
  36
  37 require_login($courseid, false);
  38
  39 $action = required_param('action', PARAM_TEXT);
  40
  41 $response = new stdClass();
  42
  43 switch ($action) {
  44     case 'find_tool_config':
  45         $toolurl = required_param('toolurl', PARAM_RAW);
  46         $toolid = optional_param('toolid', 0, PARAM_INT);
  47
  48         require_capability('moodle/course:manageactivities', $context);
  49         require_capability('mod/lti:addinstance', $context);
  50
  51         if (!empty($toolurl) && lti_is_cartridge($toolurl)) {
  52             $response->cartridge = true;
  53         } else {
  54             if (empty($toolid) && !empty($toolurl)) {
  55                 $tool = lti_get_tool_by_url_match($toolurl, $courseid);
  56
  57                 if (!empty($tool)) {
  58                     $toolid = $tool->id;
  59
  60                     $response->toolid = $tool->id;
  61                     $response->toolname = s($tool->name);
  62                     $response->tooldomain = s($tool->tooldomain);
  63                 }
  64             } else {
  65                 $response->toolid = $toolid;
  66             }
  67
  68             if (!empty($toolid)) {
  69                 // Look up privacy settings.
  70                 $query = '
  71                     SELECT name, value
  72                     FROM {lti_types_config}
  73                     WHERE
  74                         typeid = :typeid
  75                     AND name IN (\'sendname\', \'sendemailaddr\', \'acceptgrades\')
  76                 ';
  77
  78                 $privacyconfigs = $DB->get_records_sql($query, array('typeid' => $toolid));
  79                 $success = count($privacyconfigs) > 0;
  80                 foreach ($privacyconfigs as $config) {
  81                     $configname = $config->name;
  82                     $response->$configname = $config->value;
  83                 }
  84                 if (!$success) {
  85                     $response->error = s(get_string('tool_config_not_found', 'mod_lti'));
  86                 }
  87             }
  88         }
  89
  90         break;
  91 }
  92 echo $OUTPUT->header();
  93 echo json_encode($response);
  94
  95 die;