The end result of the flawed UA spoofer was to accomplish the OPPOSITE of the intended goal. UA spoofing for privacy purpose turns out to be a whole complicated task on its own, and is best undertaken as a separate dedicated extension -- assuming it is possible at all. In any case, this had no place in a "Privacy" section in uMatrix, this was a bad idea to create this feature in the first place. It's never too late to correct a bad idea, and this is the purpose of this commit.pull/2/head
gorhill
8 years ago
parent
ec5faf04f8
commit
ad9d591b16
@ -1,150 +0,0 @@
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/*******************************************************************************
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µMatrix - a Chromium browser extension to black/white list requests.
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Copyright (C) 2014 Raymond Hill
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This program 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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This program 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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You should have received a copy of the GNU General Public License
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along with this program. If not, see {http://www.gnu.org/licenses/}.
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Home: https://github.com/gorhill/uMatrix
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*/
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/* global vAPI */
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/* jshint multistr: true */
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// Injected into content pages
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/******************************************************************************/
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(function() {
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'use strict';
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/******************************************************************************/
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// https://github.com/chrisaljoudi/uBlock/issues/464
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if ( document instanceof HTMLDocument === false ) {
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//console.debug('contentscript-start.js > not a HTLMDocument');
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return;
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}
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// This can also happen (for example if script injected into a `data:` URI doc)
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if ( !window.location ) {
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return;
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}
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// This can happen
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if ( typeof vAPI !== 'object' ) {
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//console.debug('contentscript-start.js > vAPI not found');
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return;
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}
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// https://github.com/chrisaljoudi/uBlock/issues/456
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// Already injected?
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if ( vAPI.contentscriptStartInjected ) {
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//console.debug('contentscript-end.js > content script already injected');
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return;
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}
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vAPI.contentscriptStartInjected = true;
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/******************************************************************************/
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var localMessager = vAPI.messaging.channel('contentscript-start.js');
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/******************************************************************************/
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// If you play with this code, mind:
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// https://github.com/gorhill/httpswitchboard/issues/261
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// https://github.com/gorhill/httpswitchboard/issues/252
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var navigatorSpoofer = " \
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;(function() { \n \
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try { \n \
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/* https://github.com/gorhill/uMatrix/issues/61#issuecomment-63814351 */ \n \
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var navigator = window.navigator; \n \
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var spoofedUserAgent = {{ua-json}}; \n \
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if ( spoofedUserAgent === navigator.userAgent ) { \n \
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return; \n \
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} \n \
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var pos = spoofedUserAgent.indexOf('/'); \n \
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var appName = pos === -1 ? '' : spoofedUserAgent.slice(0, pos); \n \
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var appVersion = pos === -1 ? spoofedUserAgent : spoofedUserAgent.slice(pos + 1); \n \
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Object.defineProperty(navigator, 'userAgent', { value: spoofedUserAgent }); \n \
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Object.defineProperty(navigator, 'appName', { value: appName }); \n \
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Object.defineProperty(navigator, 'appVersion', { value: appVersion }); \n \
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var c = document.currentScript, \n \
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p = c && c.parentNode; \n \
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if ( p ) { p.removeChild(c); } \n \
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} catch (e) { \n \
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} \n \
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})();";
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/******************************************************************************/
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// Because window.userAgent is read-only, we need to create a fake Navigator
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// object to contain our fake user-agent string.
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// Because objects created by a content script are local to the content script
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// and not visible to the web page itself (and vice versa), we need the context
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// of the web page to create the fake Navigator object directly, and the only
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// way to do this is to inject appropriate javascript code into the web page.
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var injectNavigatorSpoofer = function(spoofedUserAgent) {
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if ( typeof spoofedUserAgent !== 'string' ) {
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return;
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}
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if ( spoofedUserAgent === navigator.userAgent ) {
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return;
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}
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var parent = document.head || document.documentElement,
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scriptText = navigatorSpoofer.replace('{{ua-json}}', JSON.stringify(spoofedUserAgent)),
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script = document.createElement('script');
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script.setAttribute('type', 'text/javascript');
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script.appendChild(document.createTextNode(scriptText));
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try {
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parent.appendChild(script);
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}
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catch (ex) {
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}
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// https://github.com/gorhill/uMatrix/issues/771
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if ( script.parentNode !== null ) {
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script.parentNode.removeChild(script);
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script = document.createElement('script');
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script.setAttribute('type', 'text/javascript');
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script.setAttribute('src', 'data:application/javascript;base64,' + window.btoa(scriptText));
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try {
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parent.appendChild(script);
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}
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catch (ex) {
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}
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if ( script.parentNode !== null ) {
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script.parentNode.removeChild(script);
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}
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}
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// The port will never be used again at this point, disconnecting allows
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// to browser to flush this script from memory.
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localMessager.close();
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};
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localMessager.send({
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what: 'getUserAgentReplaceStr',
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hostname: window.location.hostname
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}, injectNavigatorSpoofer);
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/******************************************************************************/
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/******************************************************************************/
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})();
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/******************************************************************************/
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@ -1,83 +0,0 @@
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/*******************************************************************************
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uMatrix - a Chromium browser extension to black/white list requests.
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Copyright (C) 2014-2016 Raymond Hill
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This program 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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This program 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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You should have received a copy of the GNU General Public License
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along with this program. If not, see {http://www.gnu.org/licenses/}.
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Home: https://github.com/gorhill/uMatrix
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*/
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/******************************************************************************/
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µMatrix.userAgentSpoofer = (function() {
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"use strict";
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/******************************************************************************/
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var userAgentRandomPicker = function() {
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var µm = µMatrix;
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var userAgents = µm.userSettings.spoofUserAgentWith.split(/[\n\r]+/);
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var i, s, pos;
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while ( userAgents.length ) {
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i = Math.floor(userAgents.length * Math.random());
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s = userAgents[i];
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if ( s.charAt(0) === '#' ) {
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s = '';
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} else {
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s = s.trim();
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}
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if ( s !== '' ) {
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return s;
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}
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userAgents.splice(i, 1);
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}
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return '';
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};
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/******************************************************************************/
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var userAgentSpoofer = function(force) {
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var µm = µMatrix;
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var uaStr = µm.userAgentReplaceStr;
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var obsolete = Date.now();
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if ( !force ) {
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obsolete -= µm.userSettings.spoofUserAgentEvery * 60 * 1000;
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}
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if ( µm.userAgentReplaceStrBirth < obsolete ) {
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uaStr = '';
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}
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if ( uaStr === '' ) {
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µm.userAgentReplaceStr = userAgentRandomPicker();
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µm.userAgentReplaceStrBirth = Date.now();
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}
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vAPI.setTimeout(userAgentSpoofer, 120 * 1000);
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};
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userAgentSpoofer();
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/******************************************************************************/
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return {
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shuffle: function() {
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userAgentSpoofer(true);
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}
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};
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})();
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/******************************************************************************/
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