h5p/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  * Responsible for handling AJAX requests related to H5P.
  19  *
  20  * @package    core_h5p
  21  * @copyright  2020 Victor Deniz <victor@moodle.com>, based on code by Joubel AS
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 use core_h5p\factory;
  26 use core_h5p\framework;
  27
  28 define('AJAX_SCRIPT', true);
  29
  30 require(__DIR__ . '/../config.php');
  31 require_once($CFG->libdir . '/filelib.php');
  32
  33 require_login();
  34
  35 $action = required_param('action', PARAM_ALPHA);
  36 $contextid = required_param('contextId', PARAM_INT);
  37
  38 $context = context::instance_by_id($contextid);
  39
  40 if (!has_capability('moodle/h5p:updatelibraries', $context)) {
  41     H5PCore::ajaxError(get_string('nopermissiontoedit', 'h5p'));
  42     header('HTTP/1.1 403 Forbidden');
  43     return;
  44 }
  45
  46 $factory = new factory();
  47 $editor = $factory->get_editor();
  48
  49 switch ($action) {
  50     // Load list of libraries or details for library.
  51     case 'libraries':
  52         // Get parameters.
  53         $name = optional_param('machineName', '', PARAM_TEXT);
  54         $major = optional_param('majorVersion', 0, PARAM_INT);
  55         $minor = optional_param('minorVersion', 0, PARAM_INT);
  56
  57         $language = optional_param('default-language', null, PARAM_ALPHA);
  58
  59         if (!empty($name)) {
  60             $editor->ajax->action(H5PEditorEndpoints::SINGLE_LIBRARY, $name,
  61                 $major, $minor, framework::get_language(), '', '', $language);
  62         } else {
  63             $editor->ajax->action(H5PEditorEndpoints::LIBRARIES);
  64         }
  65
  66         break;
  67
  68     // Load content type cache list to display available libraries in hub.
  69     case 'contenttypecache':
  70         $editor->ajax->action(H5PEditorEndpoints::CONTENT_TYPE_CACHE);
  71         break;
  72
  73     // Handle file upload through the editor.
  74     case 'files':
  75         $token = required_param('token', PARAM_RAW);
  76         $contentid = required_param('contentId', PARAM_INT);
  77
  78         $editor->ajax->action(H5PEditorEndpoints::FILES, $token, $contentid);
  79         break;
  80
  81     // Install libraries from H5P and retrieve content json.
  82     case 'libraryinstall':
  83         $token = required_param('token', PARAM_RAW);
  84         $machinename = required_param('id', PARAM_TEXT);
  85         $editor->ajax->action(H5PEditorEndpoints::LIBRARY_INSTALL, $token, $machinename);
  86         break;
  87
  88     // Handle file upload through the editor.
  89     case 'libraryupload':
  90         $token = required_param('token', PARAM_RAW);
  91
  92         $uploadpath = $_FILES['h5p']['tmp_name'];
  93         $contentid = optional_param('contentId', 0, PARAM_INT);
  94         $editor->ajax->action(H5PEditorEndpoints::LIBRARY_UPLOAD, $token, $uploadpath, $contentid);
  95         break;
  96
  97     // Get the $language libraries translations.
  98     case 'translations':
  99         $language = required_param('language', PARAM_RAW);
 100         $editor->ajax->action(H5PEditorEndpoints::TRANSLATIONS, $language);
 101         break;
 102
 103     // Handle filtering of parameters through AJAX.
 104     case 'filter':
 105         $token = required_param('token', PARAM_RAW);
 106         $libraryparameters = required_param('libraryParameters', PARAM_RAW);
 107
 108         $editor->ajax->action(H5PEditorEndpoints::FILTER, $token, $libraryparameters);
 109         break;
 110
 111     // Throw error if AJAX action is not handled.
 112     default:
 113         throw new coding_exception('Unhandled AJAX');
 114         break;
 115 }