remove google tracking UWAA

remove google tracking
目前为 2019-01-11 提交的版本。查看最新版本。
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// ==UserScript==
// @namespace      jp.sceneq.rgtuwaaa

// @name           remove google tracking UWAA

// @description    remove google tracking
// @description:ja Google追跡UWAAを取り除きなさい

// @homepageURL    https://github.com/sceneq/RemoveGoogleTracking

// @version        0.10
// @include        https://www.google.*/*
// @grant          none
// @run-at         document-start

// @author         sceneq
// @license        MIT
// ==/UserScript==

'use strict';
console.time('init');

try {
	window = window.unsafeWindow || window;
} catch (e) {}

const yesman = function() {
	return true;
};
const tired = function() {};

/* Return the current Google search mode */
function getParam(parameter, name) {
	var results = new RegExp('[?&]' + name + '=([^&#]*)').exec(parameter);
	if (results === null) {
		return null;
	} else {
		return results.pop() || 0;
	}
}

/* return search mode */
function getSearchMode() {
	const parameter = location.search + location.hash;
	return getParam(parameter, 'tbm') || 'search';
}

// matching tracking paramaters
const badParametersNamesObj = {
	base: [
		'biw', // offsetWidth
		'bih', // offsetHeight
		'ei',
		'sa',
		'ved',
		'source',
		'prds',
		'bvm',
		'bav',
		'psi',
		'stick',
		'dq',
		'ech',
		'gs_gbg',
		'gs_rn',
		'cp',
		'ictx',
		'cshid'
	],
	// image search
	isch: [
		'scroll',
		'vet',
		'yv',
		'iact',
		'forward',
		'ndsp',
		'csi',
		'tbnid'
		//'docid',   // related images
		//'imgdii',  // related images
	],
	searchform: [
		// search form
		'pbx',
		'dpr',
		'pf',
		'gs_rn',
		'gs_mss',
		'pq',
		'cp',
		'oq',
		'sclient',
		'gs_l',
		'aqs'
		//'gs_ri',   // suggestions
		//'gs_id',   // suggestions
		//'xhr',     // suggestions at image search
		//'tch',     // js flag?
	],
	// Google maps
	maps: ['psi']
};

// search option on first access
const GoogleOp = {
	maps: Symbol(),
	isch: Symbol(),
	search: Symbol(),
	unknown: Symbol()
};

const op = (() => {
	if (location.pathname.startsWith('/maps')) {
		return GoogleOp.maps;
	}
	if (getSearchMode() === 'isch') {
		return GoogleOp.isch;
	} else {
		return GoogleOp.search;
	}
})();

const badParametersNames = (() => {
	switch (op) {
		case GoogleOp.maps:
			return badParametersNamesObj.maps;
		case GoogleOp.isch:
			return badParametersNamesObj.base.concat(
				badParametersNamesObj.searchform,
				badParametersNamesObj.isch
			);
		case GoogleOp.search:
			return badParametersNamesObj.base.concat(
				badParametersNamesObj.searchform
			);
	}
})();

const badAttrNamesObj = {
	default: ['onmousedown', 'ping', 'oncontextmenu'],
	search: ['onmousedown', 'ping', 'oncontextmenu'],
	vid: ['onmousedown'],
	nws: ['onmousedown'],
	bks: [],
	isch: [],
	shop: []
};

// From the nodes selected here, delete parameters specified by badParametersNames
const dirtyLinkSelectors = [
	// menu
	'a.q.qs',

	// doodle
	'a.doodle',

	// Upper left menu
	'.gb_Z > a',

	// Logo
	'a#logo',
	'div #logocont > a',
	'div#qslc > a',
	'header#hdr > div > a',

	// search button?
	'form#sf > a',

	/// imagesearch
	// colors
	'div#sc-block > div > a',
	// size
	'a.hdtb-mitem'
];

const badPaths = ['imgevent', 'shopping\\/product\\/.*?\\/popout', 'async/ecr', 'async/bgasy'];

/* Compile */
// The first paramater is probably 'q' so '?' does not consider
const regBadParameters = new RegExp(
	'&(?:' + badParametersNames.join('|') + ')=.*?(?=(&|$))',
	'g'
);
const regBadPaths = new RegExp('^/(?:' + badPaths.join('|') + ')');
const dirtyLinkSelector = dirtyLinkSelectors
	.map(s => s + ":not([href=''])")
	.join(',');

/* Return parameter value */
function extractDirectLink(str, param) {
	//(?<=q=)(.*)(?=&)/
	const res = new RegExp(`[?&]${param}(=([^&#]*))`).exec(str);
	if (!res || !res[2]) return '';
	return decodeURIComponent(res[2]);
}

function sleep(ms) {
	return new Promise(resolve => setTimeout(resolve, ms));
}

/* Return Promise when declared the variable name specified by argument */
function onDeclare(obj, propertyStr, interval = 80) {
	return new Promise(async function(resolve, reject) {
		const propertyNames = propertyStr.split('.');
		let currObj = obj;
		for (const propertyName of propertyNames) {
			while (!(propertyName in currObj) || currObj[propertyName] === null) {
				await sleep(interval);
			}
			currObj = currObj[propertyName];
		}
		resolve(currObj);
	});
}

function rewriteProperties(prop) {
	for (const table of prop) {
		//const targetObject = typeof table[0] === 'function' ? table[0]() : table[0];
		Object.defineProperty(table[0] || {}, table[1], {
			value: table[2],
			writable: false
		});
	}
}

function load() {
	console.time('LOAD');

	/* Overwrite disturbing functions */
	rewriteProperties([[window, 'rwt', yesman], [window.gbar_, 'Rm', yesman]]);

	// do not send referrer
	const noreferrerMeta = document.createElement('meta');
	noreferrerMeta.setAttribute('name', 'referrer');
	noreferrerMeta.setAttribute('content', 'no-referrer');
	document.querySelector('head').appendChild(noreferrerMeta);

	/*
	 * Variables
	 */
	// Whether to use AJAX
	const legacy = document.getElementById('cst') === null;

	/* Nodes */
	const nodeMain = document.getElementById('main');
	const nodeCnt = document.getElementById('cnt');
	const root = (() => {
		if (legacy) {
			return nodeCnt || nodeMain || window.document;
		} else {
			return nodeMain; // || nodeCnt;
		}
	})();

	// Flag indicating whether the hard tab is loaded on 'DOMContentLoaded'
	const lazy_hdtb = !legacy || root === nodeCnt;

	// Define selector function
	const $ = root.querySelector.bind(root);
	const $$ = sel =>
		Array.prototype.slice.call(root.querySelectorAll.call(root, [sel]));

	// Selector pointing to anchors to purify
	const dirtySelector = (() => {
		if (root === window.document) {
			return 'body a';
		} else if (legacy) {
			return `#${root.id} a`;
		} else {
			return '#rcnt a';
		}
	})();

	// List of parameters to keep
	const saveParamNames = [
		'q',
		'hl',
		'num',
		'tbm',
		'tbs',
		'lr',
		'btnI',
		'btnK',
		'safe'
	];
	const obstacleInputsSelector =
		'form[id*=sf] input' +
		saveParamNames.map(s => ':not([name=' + s + '])').join('');

	/*
	 * Functions
	 */
	function removeFormInputs() {
		for (const node of document.querySelectorAll(obstacleInputsSelector)) {
			node.parentNode.removeChild(node);
		}
	}

	function removeBadParameters() {
		for (const dirtyLink of document.querySelectorAll(dirtyLinkSelector)) {
			dirtyLink.href = dirtyLink.href.replace(regBadParameters, '');
		}
	}

	const specProcesses = {
		shop: function() {
			// Overwrite links(desktop version only)
			//Object.values(google.pmc.smpo.r).map(s=>{return {title:s[14][0],link:s[28][8]}})
			if (legacy) return;
			onDeclare(google, 'pmc.spop.r').then(shopObj => {
				const _tempAnchors = $$("div[class$='__content'] a[jsaction='spop.c']");
				const [shopAnchors, shopThumbnailAnchors] = [0, 1].map(m =>
					_tempAnchors.filter((_, i) => i % 2 === m)
				);
				const shopArrays = Object.values(shopObj);
				const shopLinks = shopArrays.map(a => a[34][6]);
				const zip = rows => rows[0].map((_, c) => rows.map(row => row[c]));

				if (shopAnchors.length !== shopLinks.length) {
					console.warn(
						'length does not match',
						shopAnchors.length,
						shopLinks.length
					);
					return;
				}

				for (const detail of zip([
					shopAnchors,
					shopLinks,
					shopThumbnailAnchors,
					shopArrays
				])) {
					const [shopAnchor, shopLink, shopThumbnailAnchor, shopArray] = detail;

					shopAnchor.href = shopThumbnailAnchor.href = shopLink;

					// Disable click actions
					//detail[0].__jsaction = null;
					//detail[0].removeAttribute("jsaction");

					// Overwrite variables used when link clicked
					try {
						shopArray[3][0][1] = shopLink;
						shopArray[14][1] = shopLink;
						shopArray[89][16] = shopLink;
						shopArray[89][18][0] = shopLink;
						shopArray[85][3] = shopLink;
					} catch (e) {}
				}
				console.log('Links Rewrited');
			});
		}
	};

	function removeTracking() {
		console.time('removeTracking');
		const searchMode = getSearchMode();
		const badAttrNames = badAttrNamesObj[searchMode]
			? badAttrNamesObj[searchMode]
			: badAttrNamesObj['default'];
		const directLinkParamName = 'q';

		// search result
		for (const searchResult of $$(dirtySelector)) {
			// remove attributes
			for (const badAttrName of badAttrNames) {
				searchResult.removeAttribute(badAttrName);
			}

			// hide referrer
			searchResult.rel = 'noreferrer';

			// remove google redirect link(legacy)
			if (
				searchResult.hasAttribute('href') &&
				searchResult.getAttribute('href').startsWith('/url?')
			) {
				searchResult.href = extractDirectLink(
					searchResult.href,
					directLinkParamName
				);
			}
			searchResult.href = searchResult.href.replace(regBadParameters, '');
		}

		removeBadParameters();

		searchMode in specProcesses && specProcesses[searchMode]();

		console.timeEnd('removeTracking');
	}

	const ObserveOp = {
		LOADED: {
			FORM: ['INPUT', 'name', /^oq$/],
			IMAGE: ['DIV', 'class', /.*irc_bg.*/],
			HDTB: ['DIV', 'class', /^hdtb-mn-cont$/]
		},
		UPDATE: {
			HDTB: ['DIV', 'class', /^hdtb-mn-cont$/]
		},
		CHANGE: {
			HDTB: ['DIV', 'id', /^cnt$/],
			PAGE: ['DIV', 'data-set', /.+/]
		}
	};

	const ObserveUntilLoadedList = Object.values(ObserveOp.LOADED);

	function startObserve(targetElement, op, func, conf = { childList: true }) {
		if (targetElement === null) {
			console.warn('targetElement is null', op, func);
			return;
		}
		//console.log(op, 'Register To', targetElement);
		const targetElementName = op[0];
		const targetAttrName = op[1];
		const targetAttrValueReg = op[2];
		const filterFunc = n => {
			return (
				n.nodeName === targetElementName &&
				targetAttrValueReg.test(n.getAttribute(targetAttrName))
			);
		};

		// if targetElement already appeared
		if (
			ObserveUntilLoadedList.includes(op) &&
			Array.prototype.slice
				.call(targetElement.querySelectorAll(targetElementName))
				.filter(filterFunc).length >= 1
		) {
			//console.log(op, 'Register To', targetElement);
			func();
			return;
		}

		new MutationObserver((mutations, observer) => {
			const nodes = Array.prototype.concat
				.apply([], mutations.map(s => Array.prototype.slice.call(s.addedNodes)))
				//.map((s)=>{console.log(s);return s})
				.filter(filterFunc);

			if (nodes.length >= 1) {
				//console.log(targetElement, op, 'Fired', nodes[0], func);
				func();
				if (ObserveUntilLoadedList.includes(op)) {
					observer.disconnect();
				}
				//return startObserve;
			}
		}).observe(targetElement, conf);
	}

	function pageInit() {
		removeTracking();
		startObserve($('#search'), ObserveOp.CHANGE.PAGE, removeTracking);
	}

	const confDeepObserve = { childList: true, subtree: true };

	// Remove unnecessary input
	startObserve(
		document.querySelector('form'),
		ObserveOp.LOADED.FORM,
		removeFormInputs
	);

	const tsf = document.getElementById("tsf");
	if(tsf === null){
		console.warn("#tsf not found");
	}else{
		//tsf.addEventListener("submit", () => {
		const _submit = tsf.submit.bind(tsf);
		tsf.submit = () => {
			const sel = "input " + badParametersNames.map(p => `[name=${p}]`).join(",");
			for(const node of tsf.querySelectorAll(sel)){
				node.parentNode.removeChild(node);
			}
			_submit();
		};
	}

	// Wait for .hdtb-mn-cont appears in the first page access
	if (lazy_hdtb && !legacy) {
		startObserve(
			root,
			ObserveOp.LOADED.HDTB,
			() => {
				// hdtb loaded
				switch (getSearchMode()) {
					case 'isch': // Image Search
						removeTracking();

						// Remove unnecessary script from buttons
						startObserve($('#isr_mc'), ObserveOp.LOADED.IMAGE, () => {
							for (const node of $$('a[class*=irc_]')) {
								node.__jsaction = null;
								node.removeAttribute('jsaction');
							}
						});

						// on search options updated
						startObserve(
							$('#top_nav'),
							ObserveOp.UPDATE.HDTB,
							removeBadParameters,
							confDeepObserve
						);
						break;
					default:
						pageInit();
						// Wait for #cnt inserted. In HDTB switching, since .hdtb-mn-cont does not appear
						startObserve(root, ObserveOp.CHANGE.HDTB, pageInit);
						break;
				}
				removeFormInputs();
			},
			confDeepObserve
		);
	} else if (legacy) {
		removeTracking();

		// Remove unnecessary parameters from hdtb
		const hdtbRoot = $('#hdtbMenus');
		if (hdtbRoot) {
			startObserve(hdtbRoot, ObserveOp.LOADED.HDTB, removeBadParameters);
		}

		if (document.getElementById('hdr')) {
			const stopAddParams = s => {
				const src = s.srcElement;
				if (src.nodeName === 'A' && src.href.match(/\/search.*[?&]tbm=isch/)) {
					s.stopPropagation();
				}
			};
			document.addEventListener('click', stopAddParams, true);
			document.addEventListener('touchStart', stopAddParams, true);
		}

		// Remove unnecessary parameters from 'option'
		for (const option of document.querySelectorAll('#mor > option')) {
			option.value = option.value.replace(regBadParameters, '');
		}

		console.warn('legacy mode');
		console.timeEnd('LOAD');
		return;
	}

	console.timeEnd('LOAD');
}

function init() {
	onDeclare(window, 'google', 20).then(() => {
		rewriteProperties([
			[google, 'log', yesman],
			[google, 'logUrl', tired],
			[google, 'getEI', yesman],
			[google, 'getLEI', yesman],
			[google, 'ctpacw', yesman],
			[google, 'csiReport', yesman],
			[google, 'report', yesman],
			[google, 'aft', yesman],
			[google, 'kEI', '0']
		]);
	});

	// Reject Request by img tag
	//maps:log204
	const regBadImageSrc = /\/(?:(?:gen(?:erate)?|client|fp)_|log)204|(?:metric|csi)\.gstatic\.|(?:adservice)\.(google)/;
	Object.defineProperty(window.Image.prototype, 'src', {
		set: function(url) {
			if (!regBadImageSrc.test(url)) {
				this.setAttribute('src', url);
			}
		}
	});

	// Reject unknown parameters by script tag
	Object.defineProperty(window.HTMLScriptElement.prototype, 'src', {
		set: function(url) {
			this.setAttribute('src', url.replace(regBadParameters, ''));
		}
	});

	// hook XHR
	const origOpen = XMLHttpRequest.prototype.open;
	window.XMLHttpRequest.prototype.open = function(act, path) {
		if (!regBadPaths.test(path)) {
			origOpen.apply(this, [act, path.replace(regBadParameters, '')]);
		}
	};

	// beacon
	if ('navigator' in window) {
		const origSendBeacon = navigator.sendBeacon.bind(navigator);
		navigator.sendBeacon = (path, data) => {
			if (!regBadImageSrc.test(path)) {
				origSendBeacon(path, data);
			}
		};
	}
}

/* Execute */

init();
console.timeEnd('init');

if (
	location.pathname !== '/' &&
	location.pathname !== '/search' &&
	document.querySelector('html').getAttribute('itemtype') !==
		'http://schema.org/SearchResultsPage'
) {
	console.warn('');
	return;
}

window.addEventListener('DOMContentLoaded', load);

// for older browser
if (document.getElementById('universal') !== null) {
	load();
}
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