Proyectos de Subversion Moodle

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1 efrain 1
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
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/**
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 * Responsible for handling AJAX requests related to H5P.
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 *
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 * @package    core_h5p
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 * @copyright  2020 Victor Deniz <victor@moodle.com>, based on code by Joubel AS
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 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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use core_h5p\factory;
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use core_h5p\framework;
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use core_h5p\local\library\autoloader;
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use Moodle\H5PCore;
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use Moodle\H5PEditorEndpoints;
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define('AJAX_SCRIPT', true);
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require(__DIR__ . '/../config.php');
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require_once($CFG->libdir . '/filelib.php');
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if (!confirm_sesskey()) {
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    autoloader::register();
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    H5PCore::ajaxError(get_string('invalidsesskey', 'error'));
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    header('HTTP/1.1 403 Forbidden');
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    return;
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}
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require_login();
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$action = required_param('action', PARAM_ALPHA);
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$factory = new factory();
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$editor = $factory->get_editor();
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// Set context to default system context.
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$PAGE->set_context(null);
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switch ($action) {
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    // Load list of libraries or details for library.
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    case 'libraries':
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        // Get parameters.
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        $name = optional_param('machineName', '', PARAM_TEXT);
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        $major = optional_param('majorVersion', 0, PARAM_INT);
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        $minor = optional_param('minorVersion', 0, PARAM_INT);
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        // Normalise Moodle language using underscore, as opposed to H5P which uses dash.
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        $language = optional_param('default-language', '', PARAM_RAW);
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        $language = clean_param(str_replace('-', '_', $language), PARAM_LANG);
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        if (!empty($name)) {
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            $editor->ajax->action(H5PEditorEndpoints::SINGLE_LIBRARY, $name,
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                $major, $minor, framework::get_language(), '', '', $language);
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        } else {
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            $editor->ajax->action(H5PEditorEndpoints::LIBRARIES);
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        }
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        break;
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    // Load content type cache list to display available libraries in hub.
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    case 'contenttypecache':
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        $editor->ajax->action(H5PEditorEndpoints::CONTENT_TYPE_CACHE);
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        break;
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    // Handle file upload through the editor.
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    // This endpoint needs a token that only users with H5P editor access could get.
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    // TODO: MDL-68907 to check capabilities.
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    case 'files':
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        $token = required_param('token', PARAM_RAW);
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        $contentid = required_param('contentId', PARAM_INT);
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        $maxsize = get_max_upload_file_size($CFG->maxbytes);
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        // Check size of each uploaded file and scan for viruses.
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        foreach ($_FILES as $uploadedfile) {
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            $filename = clean_param($uploadedfile['name'], PARAM_FILE);
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            if ($uploadedfile['size'] > $maxsize) {
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                H5PCore::ajaxError(get_string('maxbytesfile', 'error', ['file' => $filename, 'size' => display_size($maxsize, 0)]));
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                return;
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            }
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            \core\antivirus\manager::scan_file($uploadedfile['tmp_name'], $filename, true);
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        }
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        $editor->ajax->action(H5PEditorEndpoints::FILES, $token, $contentid);
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        break;
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    // Get the $language libraries translations.
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    case 'translations':
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        $language = required_param('language', PARAM_RAW);
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        $editor->ajax->action(H5PEditorEndpoints::TRANSLATIONS, $language);
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        break;
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    // Handle filtering of parameters through AJAX.
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    case 'filter':
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        $token = required_param('token', PARAM_RAW);
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        $libraryparameters = required_param('libraryParameters', PARAM_RAW);
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        $editor->ajax->action(H5PEditorEndpoints::FILTER, $token, $libraryparameters);
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        break;
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    // Throw error if AJAX action is not handled.
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    default:
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        throw new coding_exception('Unhandled AJAX');
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        break;
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}