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Diffstat (limited to 'data/extensions/jsr@javascriptrestrictor/wrappingS-NP.js')
| -rw-r--r-- | data/extensions/jsr@javascriptrestrictor/wrappingS-NP.js | 383 |
1 files changed, 0 insertions, 383 deletions
diff --git a/data/extensions/jsr@javascriptrestrictor/wrappingS-NP.js b/data/extensions/jsr@javascriptrestrictor/wrappingS-NP.js deleted file mode 100644 index 4bcd333..0000000 --- a/data/extensions/jsr@javascriptrestrictor/wrappingS-NP.js +++ /dev/null @@ -1,383 +0,0 @@ -/** \file - * \brief Wrappers for NavigatorPlugins - * - * \author Copyright (C) 2021 Matus Svancar - * \author Copyright (C) 2022 Martin Bednar - * - * \license SPDX-License-Identifier: GPL-3.0-or-later - * \license SPDX-License-Identifier: MPL-2.0 - */ -// -// This program is free software: you can redistribute it and/or modify -// it under the terms of the GNU General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// This program 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 General Public License for more details. -// -// You should have received a copy of the GNU General Public License -// along with this program. If not, see <https://www.gnu.org/licenses/>. -// -// Alternatively, the contents of this file may be used under the terms -// of the Mozilla Public License, v. 2.0, as described below: -// -// This Source Code Form is subject to the terms of the Mozilla Public -// License, v. 2.0. If a copy of the MPL was not distributed with this file, -// You can obtain one at http://mozilla.org/MPL/2.0/. -// -// \copyright Copyright (c) 2020 The Brave Authors. - -/** \file - * This file contains wrappers for NavigatorPlugins. See the MDN docs on the [plugins](https://developer.mozilla.org/en-US/docs/Web/API/NavigatorPlugins/plugins) - * and [MIME types](https://developer.mozilla.org/en-US/docs/Web/API/NavigatorPlugins/mimeTypes). - * - * \ingroup wrappers - * - * The goal is to prevent fingerprinting by modifying value returned by getters navigator.plugins and navigator.mimeTypes - * - * This wrapper operates with three levels of protection: - * - * * (0) - replace by shuffled edited PluginArray with two added fake plugins, edited MimeTypeArray - * * (1) - replace by shuffled PluginArray with two fake plugins, empty MimeTypeArray - * * (2) - replace by empty PluginArray and MimeTypeArray - * - * These approaches are inspired by the algorithms created by [Brave Software](https://brave.com) - * available [here](https://github.com/brave/brave-core/blob/master/chromium_src/third_party/blink/renderer/modules/plugins/dom_plugin_array.cc). - * - * The purpose of the wrappers is solely to prevent fingerprinting. However, - * browsers modyfing the array stand out of the crowd, which makes them more - * fingerprintable. Consequently, JShelter does not modify an empty list. So - * no matter the configuration, an empty list is not populated by the wrappers. - * - * If PDF inline viewing is supported, Firefox returns 5 plugins: - * * "PDF Viewer" - * * "Chrome PDF Viewer" - * * "Chromium PDF Viewer" - * * "Microsoft Edge PDF Viewer" - * * "WebKit built-in PDF" - * - * A list containing exactly these plugins is treated as the empty list and it is not modified. - */ - -/* - * Create private namespace - */ -(function() { - /** - * \brief create and return fake MimeType object - * - */ - function fakeMime(){ - var ret = Object.create(MimeType.prototype); - Object.defineProperties(ret, { - type:{ - value: "" - }, - suffixes:{ - value: "" - }, - description:{ - value: randomString(32, 0, fp_prng) - }, - enabledPlugin:{ - value: null - } - }); - return ret; - } - /** - * \brief create and return fake MimeType object created from given mime and plugin - * - * \param mime original MimeType object https://developer.mozilla.org/en-US/docs/Web/API/MimeType - * \param plugin original Plugin object https://developer.mozilla.org/en-US/docs/Web/API/Plugin - */ - function farbleMime(mime, plugin){ - var ret = Object.create(MimeType.prototype); - Object.defineProperties(ret, { - type:{ - value: mime.type - }, - suffixes:{ - value: mime.suffixes - }, - description:{ - value: mime.description - }, - enabledPlugin:{ - value: plugin - } - }); - return ret; - } - /** - * \brief create and return fake Plugin object - * - * \param descLength enum specifying browser 0 - Chrome 1 - Firefox - * \param filenameLength enum specifying browser 0 - Chrome 1 - Firefox - * \param nameLength enum specifying browser 0 - Chrome 1 - Firefox - */ - function fakePlugin(descLength, filenameLength, nameLength){ - var ret = Object.create(Plugin.prototype); - var mime = fakeMime(); - Object.defineProperties(ret, { - 0:{ - value: mime - }, - "":{ - value: mime - }, - name:{ - value: randomString(nameLength, 0, fp_prng) - }, - filename:{ - value: randomString(filenameLength, 0, fp_prng) - }, - description:{ - value: randomString(descLength, 0, fp_prng) - }, - version:{ - value: null - }, - length:{ - value: 1 - } - }); - ret.__proto__.item = item; - ret.__proto__.namedItem = namedItem; - return ret; - } - /** - * \brief create and return fake PluginArray object containing given plugins - * - * \param plugins array of Plugin objects https://developer.mozilla.org/en-US/docs/Web/API/Plugin - */ - function fakePluginArrayF(plugins){ - var ret = Object.create(PluginArray.prototype); - var count = 0; - for(var i = 0; i<plugins.length; i++) { - ret[i] = plugins[i]; - if(plugins[i][0].type != "") { - Object.defineProperty(ret, plugins[i].name, { - value: plugins[count], - }); - count++; - } - } - Object.defineProperty(ret, 'length', { - value: plugins.length, - }); - ret.__proto__.item = item; - ret.__proto__.namedItem = namedItem; - ret.__proto__.refresh = refresh; - return ret; - } - /** - * \brief create and return fake MimeTypeArray object - * - * \param plugins PluginArray object https://developer.mozilla.org/en-US/docs/Web/API/PluginArray - */ - function fakeMimeTypeArrayF(plugins){ - var ret = Object.create(MimeTypeArray.prototype); - ret.__proto__.item = item; - ret.__proto__.namedItem = namedItem; - ret.__proto__.refresh = refresh; - var counter = 0; - for(var i = 0;i<plugins.length;i++){ - for(var j = 0;j>=0;j++){ - // (plugins[i][j].type != "") <- Exclude fake plugins. Fake plugin has type == "". - if((typeof plugins[i][j] != 'undefined') && (ret.namedItem(plugins[i][j].name)==null) && (plugins[i][j].type != "")){ - ret[counter] = farbleMime(plugins[i][j], plugins[i]); - ret[plugins[i][j].type] = plugins[i][j]; - counter++; - } - else{ - break; - } - } - } - - Object.defineProperty(ret, 'length', { - value: counter - }); - return ret; - } - function item(arg){ - if(typeof arg != 'undefined' && Number.isInteger(Number(arg))) - return this[arg]; - else return null; - } - - function namedItem(arg){ - if(typeof arg != 'undefined' && this[arg]) - return this[arg]; - else return null; - } - function refresh(){ - return undefined; - } - /** - * \brief create modified Plugin object from given plugin - * - * \param plugin original Plugin object https://developer.mozilla.org/en-US/docs/Web/API/Plugin - * - * Replaces words in name and description parameters in PDF plugins (default plugins in most browsers) - */ - function farblePlugin(plugin, fp_prng){ - var name = plugin.name; - var description = plugin.description; - if(plugin.name.includes("PDF")){ - let chrome = ["Chrome ", "Chromium ", "Web ", "Browser ", "OpenSource ", "Online ", "JavaScript ", ""]; - let pdf = ["PDF ", "Portable Document Format ", "portable-document-format ", "document ", "doc ", "PDF and PS ", "com.adobe.pdf "]; - let viewer = ["Viewer", "Renderer", "Display", "Plugin", "plug-in", "plug in", "extension", ""]; - name = chrome[Math.floor(fp_prng() * (chrome.length))]+pdf[Math.floor(fp_prng() * (pdf.length))]+viewer[Math.floor(fp_prng() * (viewer.length))]; - description = pdf[Math.floor(fp_prng() * (pdf.length))]; - } - var ret = Object.create(Plugin.prototype); - var counter = 0; - while(1){ - if(typeof plugin[counter] != 'undefined'){ - Object.defineProperties(ret, { - [counter]:{ - value: farbleMime(plugin[counter],ret) - }, - [plugin[counter].type]:{ - value: farbleMime(plugin[counter],ret) - } - }); - } - else { - break; - } - counter++; - } - Object.defineProperties(ret, { - name:{ - value: name - }, - filename:{ - value: randomString(32, 0, fp_prng), - }, - description:{ - value: description - }, - version:{ - value: null - }, - length:{ - value: 1 - } - }); - ret.__proto__.item = item; - ret.__proto__.namedItem = namedItem; - ret.__proto__.refresh = refresh; - return ret; - } - var methods = item + namedItem + refresh + shuffleArray + randomString; - var farbles = farblePlugin + farbleMime; - var fakes = fakeMime + fakePlugin + fakePluginArrayF + fakeMimeTypeArrayF; - var wrappers = [ - { - parent_object: "Navigator.prototype", - parent_object_property: "plugins", - apply_if: "applyWrapper", - wrapped_objects: [], - helping_code: - methods + farbles + fakes +` - var applyWrapper = true; // Possibly overridden below - if (navigator.plugins.length === 0) { - applyWrapper = false; - } - if (navigator.plugins.length === 5) { - let plugins = Array.prototype.reduce.call( - navigator.plugins, - function (acc, o) {acc.push(o.name); return acc;}, []); - if (plugins.includes("PDF Viewer") && - plugins.includes("Chrome PDF Viewer") && - plugins.includes("Chromium PDF Viewer") && - plugins.includes("Microsoft Edge PDF Viewer") && - plugins.includes( "WebKit built-in PDF")) { - applyWrapper = false; // See https://developer.mozilla.org/en-US/docs/Web/API/Navigator/plugins - } - } - if (applyWrapper) { - var fp_prng = alea(domainHash, "S-NP"); - var plugins = navigator.plugins; - var buffer = []; - if(args[0]==0){ - for(var i = 0;i<plugins.length;i++){ - buffer.push(farblePlugin(plugins[i], fp_prng)); - } - } - if(args[0]==1){ - for(var i = 0;i<plugins.length;i++){ - buffer.push(plugins[i]); - } - shuffleArray(buffer); - } - if(args[0]==0 || args[0]==1){ - var fakePlugin1 = fakePlugin(32, 16, 8); - var fakePlugin2 = fakePlugin(31, 15, 7); - buffer.push(fakePlugin1, fakePlugin2); - shuffleArray(buffer); - } - var fakePluginArray = fakePluginArrayF(buffer); - if(args[0]==1 || args[0]==2){ - var fakeMimeTypeArray = fakeMimeTypeArrayF([]); - } - else { - var fakeMimeTypeArray = fakeMimeTypeArrayF(fakePluginArray); - } - } - `, - post_wrapping_code: [ - { - code_type: "object_properties", - parent_object: "Navigator.prototype", - parent_object_property: "plugins", - wrapped_objects: [], - /** \brief replaces navigator.plugins getter - * - * Depending on level chosen this property returns: - * * (0) - shuffled PluginArray object with modified original plugins and two fake plugins - * * (1) - shuffled PluginArray object with two fake Plugins - * * (2) - empty PluginArray object - */ - wrapped_properties: [ - { - property_name: "get", - property_value: ` - function() { - return fakePluginArray; - }`, - }, - ], - }, - { - code_type: "object_properties", - parent_object: "Navigator.prototype", - parent_object_property: "mimeTypes", - wrapped_objects: [], - /** \brief replaces navigator.mimeTypes getter - * - * Depending on level chosen this property returns: - * * (0) - modified MimeTypeArray with links to updated Plugins - * * (1,2) - empty MimeTypeArray object - */ - wrapped_properties: [ - { - property_name: "get", - property_value: ` - function() { - return fakeMimeTypeArray; - }`, - }, - ], - } - ], - }, - ]; - add_wrappers(wrappers); -})(); |