65 lines
1.8 KiB
JavaScript
65 lines
1.8 KiB
JavaScript
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'use strict';
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var ua = 'hi';
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var onBeforeSendHeaders = ({requestHeaders}) => {
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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 = ua;
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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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var onCommitted = ({frameId, url, tabId}) => {
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if (frameId === 0 && url && (url.startsWith('http') || url.startsWith('ftp'))) {
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chrome.tabs.executeScript(tabId, {
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runAt: 'document_start',
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allFrames: true,
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code: `{
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const script = document.createElement('script');
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script.textContent = \`{
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navigator.__defineGetter__('userAgent', () => '${ua}');
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}\`;
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document.documentElement.appendChild(script);
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}`
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}, () => chrome.runtime.lastError);
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}
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};
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function update(str) {
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ua = str;
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if (ua) {
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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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}
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else {
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chrome.webRequest.onBeforeSendHeaders.removeListener(onBeforeSendHeaders);
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chrome.webNavigation.onCommitted.removeListener(onCommitted);
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}
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chrome.browserAction.setIcon({
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path: {
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16: 'data/icons/' + (ua ? 'active/' : '') + '16.png',
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32: 'data/icons/' + (ua ? 'active/' : '') + '32.png',
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48: 'data/icons/' + (ua ? 'active/' : '') + '48.png',
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64: 'data/icons/' + (ua ? 'active/' : '') + '64.png'
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}
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});
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chrome.browserAction.setTitle({
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title: `UserAgent Switcher (${ua ? 'enabled' : 'disabled'})
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User-Agent String: ${ua || navigator.userAgent}`
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});
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}
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chrome.storage.local.get({
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ua: ''
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}, prefs => update(prefs.ua));
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chrome.storage.onChanged.addListener(prefs => {
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update(prefs.ua.newValue);
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});
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