SingleFile/extension/core/bg/util.js

/*
 * Copyright 2010-2019 Gildas Lormeau
 * contact : gildas.lormeau <at> gmail.com
 * 
 * This file is part of SingleFile.
 *
 *   The code in this file is free software: you can redistribute it and/or 
 *   modify it under the terms of the GNU Affero General Public License 
 *   (GNU AGPL) as published by the Free Software Foundation, either version 3
 *   of the License, or (at your option) any later version.
 * 
 *   The code in this file is distributed in the hope that it will be useful, 
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of 
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero 
 *   General Public License for more details.
 *
 *   As additional permission under GNU AGPL version 3 section 7, you may 
 *   distribute UNMODIFIED VERSIONS OF THIS file without the copy of the GNU 
 *   AGPL normally required by section 4, provided you include this license 
 *   notice and a URL through which recipients can access the Corresponding 
 *   Source.
 */

/* global singlefile */

singlefile.util = (() => {

	const FORBIDDEN_DOMAINS = [
		"chrome.google.com/webstore/",
		"addons.mozilla.org"
	];

	return {
		isAllowedProtocol,
		isAllowedURL
	};

	function isAllowedProtocol(url) {
		return url && (url.startsWith("http://") || url.startsWith("https://") || url.startsWith("file://"));
	}

	function isAllowedURL(url) {
		return isAllowedProtocol(url) && !FORBIDDEN_DOMAINS.find(domain => url.startsWith("https://" + domain) || url.startsWith("http://" + domain));
	}

})();