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wanyongkang
267
static/js/fingerprint.js
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267
static/js/fingerprint.js
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/*
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* fingerprintJS 0.5.3 - Fast browser fingerprint library
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* https://github.com/Valve/fingerprintjs
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* Copyright (c) 2013 Valentin Vasilyev (valentin.vasilyev@outlook.com)
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* Licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) license.
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*/
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;(function (name, context, definition) {
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if (typeof module !== 'undefined' && module.exports) { module.exports = definition(); }
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else if (typeof define === 'function' && define.amd) { define(definition); }
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else { context[name] = definition(); }
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})('Fingerprint', this, function () {
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'use strict';
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var Fingerprint = function (options) {
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var nativeForEach, nativeMap;
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nativeForEach = Array.prototype.forEach;
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nativeMap = Array.prototype.map;
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this.each = function (obj, iterator, context) {
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if (obj === null) {
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return;
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}
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if (nativeForEach && obj.forEach === nativeForEach) {
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obj.forEach(iterator, context);
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} else if (obj.length === +obj.length) {
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for (var i = 0, l = obj.length; i < l; i++) {
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if (iterator.call(context, obj[i], i, obj) === {}) return;
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}
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} else {
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for (var key in obj) {
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if (obj.hasOwnProperty(key)) {
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if (iterator.call(context, obj[key], key, obj) === {}) return;
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}
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}
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}
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};
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this.map = function(obj, iterator, context) {
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var results = [];
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// Not using strict equality so that this acts as a
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// shortcut to checking for `null` and `undefined`.
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if (obj == null) return results;
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if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
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this.each(obj, function(value, index, list) {
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results[results.length] = iterator.call(context, value, index, list);
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});
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return results;
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};
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if (typeof options == 'object'){
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this.hasher = options.hasher;
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this.screen_resolution = options.screen_resolution;
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this.canvas = options.canvas;
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this.ie_activex = options.ie_activex;
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} else if(typeof options == 'function'){
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this.hasher = options;
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}
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};
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Fingerprint.prototype = {
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get: function(){
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var keys = [];
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keys.push(navigator.userAgent);
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keys.push(navigator.language);
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keys.push(screen.colorDepth);
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if (this.screen_resolution) {
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var resolution = this.getScreenResolution();
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if (typeof resolution !== 'undefined'){ // headless browsers, such as phantomjs
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keys.push(this.getScreenResolution().join('x'));
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}
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}
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keys.push(new Date().getTimezoneOffset());
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keys.push(this.hasSessionStorage());
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keys.push(this.hasLocalStorage());
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keys.push(!!window.indexedDB);
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//body might not be defined at this point or removed programmatically
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if(document.body){
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keys.push(typeof(document.body.addBehavior));
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} else {
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keys.push(typeof undefined);
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}
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keys.push(typeof(window.openDatabase));
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keys.push(navigator.cpuClass);
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keys.push(navigator.platform);
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keys.push(navigator.doNotTrack);
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keys.push(this.getPluginsString());
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if(this.canvas && this.isCanvasSupported()){
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keys.push(this.getCanvasFingerprint());
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}
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if(this.hasher){
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return this.hasher(keys.join('###'), 31);
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} else {
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return this.murmurhash3_32_gc(keys.join('###'), 31);
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}
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},
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/**
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* JS Implementation of MurmurHash3 (r136) (as of May 20, 2011)
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*
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* @author <a href="mailto:gary.court@gmail.com">Gary Court</a>
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* @see http://github.com/garycourt/murmurhash-js
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* @author <a href="mailto:aappleby@gmail.com">Austin Appleby</a>
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* @see http://sites.google.com/site/murmurhash/
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*
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* @param {string} key ASCII only
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* @param {number} seed Positive integer only
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* @return {number} 32-bit positive integer hash
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*/
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murmurhash3_32_gc: function(key, seed) {
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var remainder, bytes, h1, h1b, c1, c2, k1, i;
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remainder = key.length & 3; // key.length % 4
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bytes = key.length - remainder;
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h1 = seed;
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c1 = 0xcc9e2d51;
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c2 = 0x1b873593;
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i = 0;
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while (i < bytes) {
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k1 =
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((key.charCodeAt(i) & 0xff)) |
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((key.charCodeAt(++i) & 0xff) << 8) |
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((key.charCodeAt(++i) & 0xff) << 16) |
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((key.charCodeAt(++i) & 0xff) << 24);
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++i;
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k1 = ((((k1 & 0xffff) * c1) + ((((k1 >>> 16) * c1) & 0xffff) << 16))) & 0xffffffff;
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k1 = (k1 << 15) | (k1 >>> 17);
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k1 = ((((k1 & 0xffff) * c2) + ((((k1 >>> 16) * c2) & 0xffff) << 16))) & 0xffffffff;
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h1 ^= k1;
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h1 = (h1 << 13) | (h1 >>> 19);
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h1b = ((((h1 & 0xffff) * 5) + ((((h1 >>> 16) * 5) & 0xffff) << 16))) & 0xffffffff;
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h1 = (((h1b & 0xffff) + 0x6b64) + ((((h1b >>> 16) + 0xe654) & 0xffff) << 16));
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}
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k1 = 0;
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switch (remainder) {
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case 3: k1 ^= (key.charCodeAt(i + 2) & 0xff) << 16;
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case 2: k1 ^= (key.charCodeAt(i + 1) & 0xff) << 8;
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case 1: k1 ^= (key.charCodeAt(i) & 0xff);
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k1 = (((k1 & 0xffff) * c1) + ((((k1 >>> 16) * c1) & 0xffff) << 16)) & 0xffffffff;
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k1 = (k1 << 15) | (k1 >>> 17);
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k1 = (((k1 & 0xffff) * c2) + ((((k1 >>> 16) * c2) & 0xffff) << 16)) & 0xffffffff;
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h1 ^= k1;
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}
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h1 ^= key.length;
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h1 ^= h1 >>> 16;
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h1 = (((h1 & 0xffff) * 0x85ebca6b) + ((((h1 >>> 16) * 0x85ebca6b) & 0xffff) << 16)) & 0xffffffff;
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h1 ^= h1 >>> 13;
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h1 = ((((h1 & 0xffff) * 0xc2b2ae35) + ((((h1 >>> 16) * 0xc2b2ae35) & 0xffff) << 16))) & 0xffffffff;
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h1 ^= h1 >>> 16;
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return h1 >>> 0;
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},
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// https://bugzilla.mozilla.org/show_bug.cgi?id=781447
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hasLocalStorage: function () {
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try{
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return !!window.localStorage;
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} catch(e) {
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return true; // SecurityError when referencing it means it exists
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}
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},
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hasSessionStorage: function () {
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try{
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return !!window.sessionStorage;
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} catch(e) {
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return true; // SecurityError when referencing it means it exists
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}
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},
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isCanvasSupported: function () {
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var elem = document.createElement('canvas');
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return !!(elem.getContext && elem.getContext('2d'));
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},
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isIE: function () {
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if(navigator.appName === 'Microsoft Internet Explorer') {
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return true;
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} else if(navigator.appName === 'Netscape' && /Trident/.test(navigator.userAgent)){// IE 11
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return true;
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}
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return false;
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},
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getPluginsString: function () {
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if(this.isIE() && this.ie_activex){
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return this.getIEPluginsString();
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} else {
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return this.getRegularPluginsString();
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}
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},
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getRegularPluginsString: function () {
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return this.map(navigator.plugins, function (p) {
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var mimeTypes = this.map(p, function(mt){
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return [mt.type, mt.suffixes].join('~');
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}).join(',');
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return [p.name, p.description, mimeTypes].join('::');
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}, this).join(';');
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},
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getIEPluginsString: function () {
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if(window.ActiveXObject){
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var names = ['ShockwaveFlash.ShockwaveFlash',//flash plugin
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'AcroPDF.PDF', // Adobe PDF reader 7+
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'PDF.PdfCtrl', // Adobe PDF reader 6 and earlier, brrr
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'QuickTime.QuickTime', // QuickTime
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// 5 versions of real players
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'rmocx.RealPlayer G2 Control',
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'rmocx.RealPlayer G2 Control.1',
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'RealPlayer.RealPlayer(tm) ActiveX Control (32-bit)',
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'RealVideo.RealVideo(tm) ActiveX Control (32-bit)',
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'RealPlayer',
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'SWCtl.SWCtl', // ShockWave player
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'WMPlayer.OCX', // Windows media player
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'AgControl.AgControl', // Silverlight
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'Skype.Detection'];
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// starting to detect plugins in IE
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return this.map(names, function(name){
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try{
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new ActiveXObject(name);
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return name;
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} catch(e){
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return null;
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}
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}).join(';');
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} else {
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return ""; // behavior prior version 0.5.0, not breaking backwards compat.
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}
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},
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getScreenResolution: function () {
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return [screen.height, screen.width];
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},
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getCanvasFingerprint: function () {
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var canvas = document.createElement('canvas');
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var ctx = canvas.getContext('2d');
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// https://www.browserleaks.com/canvas#how-does-it-work
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var txt = 'http://valve.github.io';
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ctx.textBaseline = "top";
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ctx.font = "14px 'Arial'";
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ctx.textBaseline = "alphabetic";
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ctx.fillStyle = "#f60";
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ctx.fillRect(125,1,62,20);
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ctx.fillStyle = "#069";
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ctx.fillText(txt, 2, 15);
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ctx.fillStyle = "rgba(102, 204, 0, 0.7)";
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ctx.fillText(txt, 4, 17);
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return canvas.toDataURL();
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}
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};
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return Fingerprint;
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});
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