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 use core_h5p\local\library\autoloader;
  28
  29 define('AJAX_SCRIPT', true);
  30
  31 require(__DIR__ . '/../config.php');
  32 require_once($CFG->libdir . '/filelib.php');
  33
  34 if (!confirm_sesskey()) {
  35     autoloader::register();
  36     H5PCore::ajaxError(get_string('invalidsesskey', 'error'));
  37     header('HTTP/1.1 403 Forbidden');
  38     return;
  39 }
  40 require_login();
  41
  42 $action = required_param('action', PARAM_ALPHA);
  43
  44 $factory = new factory();
  45 $editor = $factory->get_editor();
  46
  47 switch ($action) {
  48     // Load list of libraries or details for library.
  49     case 'libraries':
  50         // Get parameters.
  51         $name = optional_param('machineName', '', PARAM_TEXT);
  52         $major = optional_param('majorVersion', 0, PARAM_INT);
  53         $minor = optional_param('minorVersion', 0, PARAM_INT);
  54
  55         $language = optional_param('default-language', null, PARAM_ALPHA);
  56
  57         if (!empty($name)) {
  58             $editor->ajax->action(H5PEditorEndpoints::SINGLE_LIBRARY, $name,
  59                 $major, $minor, framework::get_language(), '', '', $language);
  60         } else {
  61             $editor->ajax->action(H5PEditorEndpoints::LIBRARIES);
  62         }
  63
  64         break;
  65
  66     // Load content type cache list to display available libraries in hub.
  67     case 'contenttypecache':
  68         $editor->ajax->action(H5PEditorEndpoints::CONTENT_TYPE_CACHE);
  69         break;
  70
  71     // Handle file upload through the editor.
  72     // This endpoint needs a token that only users with H5P editor access could get.
  73     // TODO: MDL-68907 to check capabilities.
  74     case 'files':
  75         $token = required_param('token', PARAM_RAW);
  76         $contentid = required_param('contentId', PARAM_INT);
  77
  78         $maxsize = get_max_upload_file_size($CFG->maxbytes);
  79         // Check size of each uploaded file and scan for viruses.
  80         foreach ($_FILES as $uploadedfile) {
  81             $filename = clean_param($uploadedfile['name'], PARAM_FILE);
  82             if ($uploadedfile['size'] > $maxsize) {
  83                 H5PCore::ajaxError(get_string('maxbytesfile', 'error', ['file' => $filename, 'size' => display_size($maxsize)]));
  84                 return;
  85             }
  86             \core\antivirus\manager::scan_file($uploadedfile['tmp_name'], $filename, true);
  87         }
  88
  89         $editor->ajax->action(H5PEditorEndpoints::FILES, $token, $contentid);
  90         break;
  91
  92     // Get the $language libraries translations.
  93     case 'translations':
  94         $language = required_param('language', PARAM_RAW);
  95         $editor->ajax->action(H5PEditorEndpoints::TRANSLATIONS, $language);
  96         break;
  97
  98     // Handle filtering of parameters through AJAX.
  99     case 'filter':
 100         $token = required_param('token', PARAM_RAW);
 101         $libraryparameters = required_param('libraryParameters', PARAM_RAW);
 102
 103         $editor->ajax->action(H5PEditorEndpoints::FILTER, $token, $libraryparameters);
 104         break;
 105
 106     // Throw error if AJAX action is not handled.
 107     default:
 108         throw new coding_exception('Unhandled AJAX');
 109         break;
 110 }