567 lines
17 KiB
JavaScript
567 lines
17 KiB
JavaScript
/* globals UAParser */
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'use strict';
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const DCSI = 'firefox-default';
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const cache = {}; // cache how a tab's request get handled (true, false, object)
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const tabs = {};
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const cookieStoreIds = {};
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chrome.tabs.onRemoved.addListener(id => {
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delete cache[id];
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delete tabs[id];
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delete cookieStoreIds[id];
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});
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chrome.tabs.onCreated.addListener(tab => {
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tabs[tab.id] = tab.windowId;
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cookieStoreIds[tab.id] = tab.cookieStoreId;
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});
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const prefs = {
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ua: '',
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blacklist: [],
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whitelist: [],
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custom: {},
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siblings: {
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'www.google.com': 0,
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'www.youtube.com': 0
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}, // a list of domains that are considered siblings (use same index for all)
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mode: 'blacklist',
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color: '#777',
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cache: true,
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exactMatch: false,
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protected: ['google.com/recaptcha', 'gstatic.com/recaptcha'],
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parser: {}, // maps ua string to a ua object,
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log: false
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};
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window.prefs = prefs; // access from popup
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const log = (...args) => prefs.log && console.log(...args);
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// expand comma-separated keys of prefs.custom and add missing keys
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const expand = () => {
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log('expanding custom rules');
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expand.rules = {};
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for (const key of Object.keys(prefs.custom)) {
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for (const k of key.split(/\s*,\s*/)) {
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if (k) {
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expand.rules[k] = prefs.custom[key];
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// make sure all siblings have the same expanded rule
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const i = prefs.siblings[key];
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if (i !== undefined) {
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for (const [hostname, j] of Object.entries(prefs.siblings)) {
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if (i === j) {
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expand.rules[hostname] = expand.rules[hostname] || prefs.custom[key];
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if (expand.rules._) {
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const x = expand.rules._.indexOf(key);
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const y = expand.rules._.indexOf(hostname);
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if (x !== -1 && y === -1) {
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expand.rules._.push(hostname);
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}
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if (x === -1 && y !== -1) {
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expand.rules._.push(key);
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}
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}
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}
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}
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}
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}
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}
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}
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};
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expand.rules = {};
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const currentCookieStoreId = () => new Promise(resolve => chrome.tabs.query({
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active: true,
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currentWindow: true
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}, tbs => {
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resolve((tbs.length ? tbs[0].cookieStoreId : '') || DCSI);
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}));
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chrome.storage.local.get(prefs, ps => {
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Object.assign(prefs, ps);
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expand();
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chrome.tabs.query({}, ts => {
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ts.forEach(t => {
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tabs[t.id] = t.windowId;
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cookieStoreIds[t.id] = t.cookieStoreId;
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});
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// update prefs.ua from the managed storage
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try {
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chrome.storage.managed.get({
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ua: ''
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}, rps => {
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if (!chrome.runtime.lastError && rps.ua) {
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chrome.storage.local.set({
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ua: rps.ua
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});
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}
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else {
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ua.update(undefined, undefined, DCSI);
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}
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});
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}
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catch (e) {
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ua.update(undefined, undefined, DCSI);
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}
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});
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if (chrome.browserAction.setBadgeBackgroundColor) { // FF for Android
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chrome.browserAction.setBadgeBackgroundColor({
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color: prefs.color
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});
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}
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// context menu
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chrome.contextMenus.create({
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id: 'blacklist',
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title: 'Switch to "black-list" mode',
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contexts: ['browser_action'],
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type: 'radio',
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checked: prefs.mode === 'blacklist'
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}, () => chrome.runtime.lastError);
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chrome.contextMenus.create({
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id: 'whitelist',
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title: 'Switch to "white-list" mode',
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contexts: ['browser_action'],
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type: 'radio',
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checked: prefs.mode === 'whitelist'
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}, () => chrome.runtime.lastError);
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chrome.contextMenus.create({
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id: 'custom',
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title: 'Switch to "custom" mode',
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contexts: ['browser_action'],
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type: 'radio',
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checked: prefs.mode === 'custom'
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}, () => chrome.runtime.lastError);
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});
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chrome.storage.onChanged.addListener(ps => {
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Object.keys(ps).forEach(key => prefs[key] = ps[key].newValue);
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if (ps.ua || ps.mode) {
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currentCookieStoreId().then(cookieStoreId => {
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if (ps.ua) {
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if (ps.ua.newValue === '') {
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delete ua._obj[cookieStoreId];
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}
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}
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ua.update(undefined, undefined, cookieStoreId);
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});
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}
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if (ps.custom) {
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expand();
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}
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});
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const ua = {
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_obj: {},
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diff(tabId, cookieStoreId = DCSI) { // returns true if there is per window object
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log('ua.diff is called', tabId, cookieStoreId);
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const windowId = tabs[tabId];
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return windowId in (this._obj[cookieStoreId] || this._obj[DCSI] || {});
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},
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get windows() {
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log('ua.windows is called');
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const ids = [];
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for (const cookieStoreId of Object.keys(this._obj)) {
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ids.push(...Object.keys(this._obj[cookieStoreId]).filter(id => id !== 'global').map(s => Number(s)));
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}
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return ids.filter((n, i, l) => n && l.indexOf(n) === i);
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},
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parse: s => {
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log('ua.parse is called', s);
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if (prefs.parser[s]) {
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log('ua.parse is resolved using parser');
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return Object.assign({
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userAgent: s
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}, prefs.parser[s]);
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}
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// build ua string from browser defaults;
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s = s.replace(/\${([^}]+)}/g, (a, b) => navigator[b]);
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const o = {};
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o.userAgent = s;
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o.appVersion = s
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.replace(/^Mozilla\//, '')
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.replace(/^Opera\//, '');
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const isFF = /Firefox/.test(s);
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const isCH = /Chrome/.test(s);
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const isSF = /Safari/.test(s) && isCH === false;
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if (isFF) {
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o.appVersion = '5.0 ' + o.appVersion.replace('5.0 ', '').split(/[\s;]/)[0] + ')';
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}
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const p = (new UAParser(s)).getResult();
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o.platform = p.os.name || '';
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o.vendor = p.device.vendor || '';
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if (isSF) {
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o.vendor = 'Apple Computer, Inc.';
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}
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else if (isFF === false) {
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o.vendor = 'Google Inc.';
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}
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o.product = p.engine.name || '';
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if (s.indexOf('Gecko') !== -1) {
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o.product = 'Gecko';
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}
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if (isFF) {
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o.oscpu = ((p.os.name || '') + ' ' + (p.os.version || '')).trim();
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}
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else {
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o.oscpu = '[delete]';
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}
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if (o.userAgent === 'empty') {
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Object.keys(o).forEach(key => {
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if (key !== 'userAgent') {
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o[key] = '';
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}
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});
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}
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return o;
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},
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object(tabId, windowId, cookieStoreId = DCSI) {
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windowId = windowId || (tabId ? tabs[tabId] : 'global');
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log('ua.object is called', tabId, windowId, cookieStoreId);
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if (this._obj[cookieStoreId]) {
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return this._obj[cookieStoreId][windowId] || this._obj[cookieStoreId].global;
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}
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},
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string(str, windowId, cookieStoreId) {
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log('ua.string is called', str, windowId);
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this._obj[cookieStoreId] = this._obj[cookieStoreId] || {};
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if (str) {
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this._obj[cookieStoreId][windowId] = this.parse(str);
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}
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else {
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this._obj[cookieStoreId][windowId] = {};
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}
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},
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tooltip(title, tabId) {
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log('ua.tooltip is called', title, tabId);
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chrome.browserAction.setTitle({
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title,
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tabId
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});
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},
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icon(mode, tabId) {
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log('ua.icon is called', mode, tabId);
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chrome.browserAction.setIcon({
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tabId,
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path: {
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'16': 'data/icons/' + (mode ? mode + '/' : '') + '16.png',
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'18': 'data/icons/' + (mode ? mode + '/' : '') + '18.png',
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'19': 'data/icons/' + (mode ? mode + '/' : '') + '19.png',
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'32': 'data/icons/' + (mode ? mode + '/' : '') + '32.png',
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'36': 'data/icons/' + (mode ? mode + '/' : '') + '36.png',
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'38': 'data/icons/' + (mode ? mode + '/' : '') + '38.png',
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'48': 'data/icons/' + (mode ? mode + '/' : '') + '48.png'
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}
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});
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},
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toolbar: ({windowId, tabId, cookieStoreId}) => {
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log('ua.toolbar is called', windowId, tabId);
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if (windowId) {
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chrome.tabs.query({
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windowId
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}, tabs => tabs.forEach(tab => {
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const tabId = tab.id;
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const o = ua.object(null, windowId, tab.cookieStoreId);
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chrome.browserAction.setBadgeText({
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tabId,
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text: o && o.platform ? o.platform.substr(0, 3) : ''
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});
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}));
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}
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else if (tabId) {
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const o = ua.object(tabId, undefined, cookieStoreId);
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chrome.browserAction.setBadgeText({
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tabId,
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text: o.platform ? o.platform.substr(0, 3) : 'BOT'
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});
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}
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},
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update(str = prefs.ua, windowId = 'global', cookieStoreId = DCSI) {
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log('ua.update is called', str, windowId, cookieStoreId);
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// clear caching
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Object.keys(cache).forEach(key => delete cache[key]);
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// remove old listeners
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chrome.webRequest.onBeforeSendHeaders.removeListener(onBeforeSendHeaders);
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chrome.webNavigation.onCommitted.removeListener(onCommitted);
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// apply new ones
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if (str || prefs.mode === 'custom' || this.windows.length || Object.keys(this._obj).length) {
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if (str) {
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ua.string(str, windowId, cookieStoreId);
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}
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chrome.webRequest.onBeforeSendHeaders.addListener(onBeforeSendHeaders, {
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'urls': ['*://*/*']
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}, ['blocking', 'requestHeaders']);
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chrome.webNavigation.onCommitted.addListener(onCommitted);
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ua.tooltip('[Default] ' + navigator.userAgent);
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ua.icon('ignored');
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}
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else {
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ua.icon('');
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ua.tooltip('[Disabled] to enable, use the popup window');
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}
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if (windowId === 'global') {
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this.toolbar({str});
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}
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// update per window
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else {
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this.windows.forEach(windowId => this.toolbar({windowId}));
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}
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}
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};
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window.ua = ua; // using from popup
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// make sure to clean on window removal
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if (chrome.windows) { // FF on Android
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chrome.windows.onRemoved.addListener(windowId => {
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let update = false;
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Object.keys(ua._obj).forEach(cookieStoreId => {
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if (windowId in ua._obj[cookieStoreId]) {
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delete ua._obj[cookieStoreId][windowId];
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// delete the entire object if it is empty
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if (Object.keys(ua._obj[cookieStoreId]).length === 0) {
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delete ua._obj[cookieStoreId];
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}
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update = true;
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}
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});
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// if nothing is left to monitor, disable the extension
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if (update) {
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currentCookieStoreId().then(cookieStoreId => ua.update(undefined, undefined, cookieStoreId));
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}
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});
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}
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function hostname(url) {
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log('hostname', url);
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const s = url.indexOf('//') + 2;
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if (s > 1) {
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let o = url.indexOf('/', s);
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if (o > 0) {
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return url.substring(s, o);
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}
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else {
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o = url.indexOf('?', s);
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if (o > 0) {
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return url.substring(s, o);
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}
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else {
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return url.substring(s);
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}
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}
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}
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else {
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return url;
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}
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}
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// returns true, false or an object; true: ignore, false: use from ua object.
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function match({url, tabId, cookieStoreId = DCSI}) {
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log('match', url, tabId, cookieStoreId);
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const h = hostname(url);
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if (prefs.mode === 'blacklist') {
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if (prefs.blacklist.length) {
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return prefs.blacklist.some(s => {
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if (s === h) {
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return true;
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}
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else if (prefs.exactMatch === false) {
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return s.endsWith('.' + h) || h.endsWith('.' + s);
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}
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});
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}
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}
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else if (prefs.mode === 'whitelist') {
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if (prefs.whitelist.length) {
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return prefs.whitelist.some(s => {
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if (s === h) {
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return true;
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}
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else if (prefs.exactMatch === false) {
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return s.endsWith('.' + h) || h.endsWith('.' + s);
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}
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}) === false;
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}
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else {
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return true;
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}
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}
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const [hh] = h.split(':');
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const key = Object.keys(expand.rules).filter(s => {
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if (s === h || s === hh) {
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return true;
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}
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else if (prefs.exactMatch === false) {
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return s.endsWith('.' + h) || h.endsWith('.' + s) || s.endsWith('.' + hh) || hh.endsWith('.' + s);
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}
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}).shift();
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let s;
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// try to use an already resolved sibling hostname
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const i = prefs.siblings[key];
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if (i !== undefined) {
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for (const [hostname, j] of Object.entries(prefs.siblings)) {
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if (j === i && expand.rules[hostname] && typeof expand.rules[hostname] === 'string') {
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s = expand.rules[hostname];
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}
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}
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}
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s = s || expand.rules[key];
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// use '*' when the hostname specific key is not found
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s = s || expand.rules['*'];
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// if s is an array select a random string
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if (Array.isArray(s)) {
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s = s[Math.floor(Math.random() * s.length)];
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// set session mode if key is either on _[key] or _['*'] lists
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if (expand.rules._ && Array.isArray(expand.rules._)) {
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if (expand.rules._.indexOf(key) !== -1) {
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expand.rules[key] = s;
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}
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else if (expand.rules._.indexOf('*') !== -1) {
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if (expand.rules[key]) {
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expand.rules[key] = s;
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}
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else if (expand.rules['*']) {
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expand.rules['*'] = s;
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}
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}
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}
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}
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if (s) {
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return ua.parse(s);
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}
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else {
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const o = ua.object(tabId, undefined, cookieStoreId);
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return o ? !o.userAgent : true;
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}
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}
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const onBeforeSendHeaders = d => {
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const {tabId, url, requestHeaders, type} = d;
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const cookieStoreId = d.cookieStoreId || cookieStoreIds[tabId] || DCSI;
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if (type === 'main_frame' || prefs.cache === false) {
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cookieStoreIds[tabId] = cookieStoreId;
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cache[tabId] = match({url, tabId, cookieStoreId});
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}
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if (cache[tabId] === true) {
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return {};
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}
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if (prefs.protected.some(s => url.indexOf(s) !== -1)) {
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return {};
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}
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const o = (cache[tabId] || ua.object(tabId, undefined, cookieStoreId));
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const str = o ? o.userAgent : '';
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if (str && requestHeaders.length) {
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for (let i = 0, name = requestHeaders[0].name; i < requestHeaders.length; i += 1, name = (requestHeaders[i] || {}).name) {
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if (name === 'User-Agent' || name === 'user-agent') {
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requestHeaders[i].value = str === 'empty' ? '' : str;
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return {
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requestHeaders
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};
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}
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}
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}
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};
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const onCommitted = d => {
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const {frameId, url, tabId} = d;
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const cookieStoreId = d.cookieStoreId || cookieStoreIds[tabId] || DCSI;
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if (url && (url.startsWith('http') || url.startsWith('ftp')) || url === 'about:blank') {
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if (cache[tabId] === true) {
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return;
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}
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const o = cache[tabId] || ua.object(tabId, undefined, cookieStoreId);
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if (o && o.userAgent) {
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chrome.tabs.executeScript(tabId, {
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runAt: 'document_start',
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frameId,
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code: `{
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const script = document.createElement('script');
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script.textContent = \`{
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const o = JSON.parse('${JSON.stringify(o)}');
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for (const key of Object.keys(o)) {
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navigator.__defineGetter__(key, () => {
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if (o[key] === '[delete]') {
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return undefined;
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}
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else if (o[key] === 'empty') {
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return '';
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}
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return o[key];
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});
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}
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}\`;
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document.documentElement.appendChild(script);
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script.remove();
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}`
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}, () => {
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const lastError = chrome.runtime.lastError;
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if (lastError &&
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lastError.message !== 'No matching message handler' && // Firefox on Windows
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lastError.message !== 'document.documentElement is null' // Firefox on Windows
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) {
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if (frameId === 0) {
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ua.tooltip('[Default] ' + navigator.userAgent, tabId);
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|
ua.icon('ignored', tabId);
|
|
}
|
|
}
|
|
else if (frameId === 0) {
|
|
ua.tooltip('[Custom] ' + o.userAgent, tabId);
|
|
ua.icon('active', tabId);
|
|
}
|
|
});
|
|
}
|
|
}
|
|
// change the toolbar icon if there is a per window UA setting
|
|
if (frameId === 0 && ua.diff(tabId, cookieStoreId)) {
|
|
ua.toolbar({tabId, cookieStoreId});
|
|
}
|
|
};
|
|
// context menu
|
|
chrome.contextMenus.onClicked.addListener(info => chrome.storage.local.set({
|
|
mode: info.menuItemId
|
|
}));
|
|
|
|
// restore container agents
|
|
chrome.storage.local.get({
|
|
'container-uas': {}
|
|
}, prefs => {
|
|
for (const cookieStoreId of Object.keys(prefs['container-uas'])) {
|
|
ua.string(prefs['container-uas'][cookieStoreId], 'global', cookieStoreId);
|
|
}
|
|
});
|
|
|
|
/* FAQs & Feedback */
|
|
{
|
|
const {management, runtime: {onInstalled, setUninstallURL, getManifest}, storage, tabs} = chrome;
|
|
if (navigator.webdriver !== true) {
|
|
const page = getManifest().homepage_url;
|
|
const {name, version} = getManifest();
|
|
onInstalled.addListener(({reason, previousVersion}) => {
|
|
management.getSelf(({installType}) => installType === 'normal' && storage.local.get({
|
|
'faqs': true,
|
|
'last-update': 0
|
|
}, prefs => {
|
|
if (reason === 'install' || (prefs.faqs && reason === 'update')) {
|
|
const doUpdate = (Date.now() - prefs['last-update']) / 1000 / 60 / 60 / 24 > 45;
|
|
if (doUpdate && previousVersion !== version) {
|
|
tabs.create({
|
|
url: page + '?version=' + version + (previousVersion ? '&p=' + previousVersion : '') + '&type=' + reason,
|
|
active: reason === 'install'
|
|
});
|
|
storage.local.set({'last-update': Date.now()});
|
|
}
|
|
}
|
|
}));
|
|
});
|
|
setUninstallURL(page + '?rd=feedback&name=' + encodeURIComponent(name) + '&version=' + version);
|
|
}
|
|
}
|