dcagent
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an analytics sdk for HTML5 app and web game
274 lines (242 loc) • 8.39 kB
JavaScript
/*
* fingerprintJS 0.5.4 - Fast browser fingerprint library
* https://github.com/Valve/fingerprintjs
* Copyright (c) 2013 Valentin Vasilyev (valentin.vasilyev@outlook.com)
* Licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) license.
*/
import {window, document} from '../globals.js'
var screen = window.screen
var navigator = window.navigator
function Fingerprint(options) {
var nativeForEach, nativeMap;
nativeForEach = Array.prototype.forEach;
nativeMap = Array.prototype.map;
this.each = function (obj, iterator, context) {
if (obj === null) {
return;
}
if (nativeForEach && obj.forEach === nativeForEach) {
obj.forEach(iterator, context);
} else if (obj.length === +obj.length) {
for (var i = 0, l = obj.length; i < l; i++) {
if (iterator.call(context, obj[i], i, obj) === {}) return;
}
} else {
for (var key in obj) {
if (obj.hasOwnProperty(key)) {
if (iterator.call(context, obj[key], key, obj) === {}) return;
}
}
}
};
this.map = function (obj, iterator, context) {
var results = [];
// Not using strict equality so that this acts as a
// shortcut to checking for `null` and `undefined`.
if (obj == null) return results;
if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
this.each(obj, function (value, index, list) {
results[results.length] = iterator.call(context, value, index, list);
});
return results;
};
if (typeof options === 'object') {
this.hasher = options.hasher;
this.screen_resolution = options.screen_resolution;
this.screen_orientation = options.screen_orientation;
this.canvas = options.canvas;
this.ie_activex = options.ie_activex;
} else if (typeof options === 'function') {
this.hasher = options;
}
}
Fingerprint.prototype.get = function () {
var keys = [];
keys.push(navigator.userAgent);
keys.push(navigator.language);
keys.push(screen.colorDepth);
if (this.screen_resolution) {
var resolution = this.getScreenResolution();
if (typeof resolution !== 'undefined') { // headless browsers, such as phantomjs
keys.push(resolution.join('x'));
}
}
keys.push(new Date().getTimezoneOffset());
keys.push(this.hasSessionStorage());
keys.push(this.hasLocalStorage());
keys.push(!!window.indexedDB);
//body might not be defined at this point or removed programmatically
if (document.body) {
keys.push(typeof(document.body.addBehavior));
} else {
keys.push(typeof undefined);
}
keys.push(typeof(window.openDatabase));
keys.push(navigator.cpuClass);
keys.push(navigator.platform);
keys.push(navigator.doNotTrack);
keys.push(this.getPluginsString());
if (this.canvas && this.isCanvasSupported()) {
keys.push(this.getCanvasFingerprint());
}
if (this.hasher) {
return this.hasher(keys.join('###'), 31);
} else {
return this.murmurhash3_32_gc(keys.join('###'), 31);
}
}
/**
* JS Implementation of MurmurHash3 (r136) (as of May 20, 2011)
*
* @author <a href="mailto:gary.court@gmail.com">Gary Court</a>
* @see http://github.com/garycourt/murmurhash-js
* @author <a href="mailto:aappleby@gmail.com">Austin Appleby</a>
* @see http://sites.google.com/site/murmurhash/
*
* @param {string} key ASCII only
* @param {number} seed Positive integer only
* @return {number} 32-bit positive integer hash
*/
Fingerprint.prototype.murmurhash3_32_gc = function (key, seed) {
var remainder, bytes, h1, h1b, c1, c2, k1, i;
remainder = key.length & 3; // key.length % 4
bytes = key.length - remainder;
h1 = seed;
c1 = 0xcc9e2d51;
c2 = 0x1b873593;
i = 0;
while (i < bytes) {
k1 =
((key.charCodeAt(i) & 0xff)) |
((key.charCodeAt(++i) & 0xff) << 8) |
((key.charCodeAt(++i) & 0xff) << 16) |
((key.charCodeAt(++i) & 0xff) << 24);
++i;
k1 = ((((k1 & 0xffff) * c1) + ((((k1 >>> 16) * c1) & 0xffff) << 16))) & 0xffffffff;
k1 = (k1 << 15) | (k1 >>> 17);
k1 = ((((k1 & 0xffff) * c2) + ((((k1 >>> 16) * c2) & 0xffff) << 16))) & 0xffffffff;
h1 ^= k1;
h1 = (h1 << 13) | (h1 >>> 19);
h1b = ((((h1 & 0xffff) * 5) + ((((h1 >>> 16) * 5) & 0xffff) << 16))) & 0xffffffff;
h1 = (((h1b & 0xffff) + 0x6b64) + ((((h1b >>> 16) + 0xe654) & 0xffff) << 16));
}
k1 = 0;
switch (remainder) {
case 3:
k1 ^= (key.charCodeAt(i + 2) & 0xff) << 16;
break;
case 2:
k1 ^= (key.charCodeAt(i + 1) & 0xff) << 8;
break;
case 1:
k1 ^= (key.charCodeAt(i) & 0xff);
k1 = (((k1 & 0xffff) * c1) + ((((k1 >>> 16) * c1) & 0xffff) << 16)) & 0xffffffff;
k1 = (k1 << 15) | (k1 >>> 17);
k1 = (((k1 & 0xffff) * c2) + ((((k1 >>> 16) * c2) & 0xffff) << 16)) & 0xffffffff;
h1 ^= k1;
}
h1 ^= key.length;
h1 ^= h1 >>> 16;
h1 = (((h1 & 0xffff) * 0x85ebca6b) + ((((h1 >>> 16) * 0x85ebca6b) & 0xffff) << 16)) & 0xffffffff;
h1 ^= h1 >>> 13;
h1 = ((((h1 & 0xffff) * 0xc2b2ae35) + ((((h1 >>> 16) * 0xc2b2ae35) & 0xffff) << 16))) & 0xffffffff;
h1 ^= h1 >>> 16;
return h1 >>> 0;
}
// https://bugzilla.mozilla.org/show_bug.cgi?id=781447
Fingerprint.prototype.hasLocalStorage = function () {
try {
return !!window.localStorage;
} catch (e) {
return true; // SecurityError when referencing it means it exists
}
}
Fingerprint.prototype.hasSessionStorage = function () {
try {
return !!window.sessionStorage;
} catch (e) {
return true; // SecurityError when referencing it means it exists
}
}
Fingerprint.prototype.isCanvasSupported = function () {
var elem = document.createElement('canvas');
return !!(elem.getContext && elem.getContext('2d'));
}
Fingerprint.prototype.isIE = function () {
if (navigator.appName === 'Microsoft Internet Explorer') {
return true;
} else if (navigator.appName === 'Netscape' && /Trident/.test(navigator.userAgent)) {// IE 11
return true;
}
return false;
}
Fingerprint.prototype.getPluginsString = function () {
if (this.isIE() && this.ie_activex) {
return this.getIEPluginsString();
} else {
return this.getRegularPluginsString();
}
}
Fingerprint.prototype.getRegularPluginsString = function () {
return this.map(navigator.plugins, function (p) {
var mimeTypes = this.map(p, function (mt) {
return [mt.type, mt.suffixes].join('~');
}).join(',');
return [p.name, p.description, mimeTypes].join('::');
}, this).join(';');
}
Fingerprint.prototype.getIEPluginsString = function () {
if (window.ActiveXObject) {
var names = ['ShockwaveFlash.ShockwaveFlash',//flash plugin
'AcroPDF.PDF', // Adobe PDF reader 7+
'PDF.PdfCtrl', // Adobe PDF reader 6 and earlier, brrr
'QuickTime.QuickTime', // QuickTime
// 5 versions of real players
'rmocx.RealPlayer G2 Control',
'rmocx.RealPlayer G2 Control.1',
'RealPlayer.RealPlayer(tm) ActiveX Control (32-bit)',
'RealVideo.RealVideo(tm) ActiveX Control (32-bit)',
'RealPlayer',
'SWCtl.SWCtl', // ShockWave player
'WMPlayer.OCX', // Windows media player
'AgControl.AgControl', // Silverlight
'Skype.Detection'];
// starting to detect plugins in IE
return this.map(names, function (name) {
try {
new window.ActiveXObject(name);
return name;
} catch (e) {
return null;
}
}).join(';');
} else {
return ""; // behavior prior version 0.5.0, not breaking backwards compat.
}
}
Fingerprint.prototype.getScreenResolution = function () {
var resolution;
if (this.screen_orientation) {
resolution = (screen.height > screen.width) ? [screen.height, screen.width] : [screen.width, screen.height];
} else {
resolution = [screen.height, screen.width];
}
return resolution;
}
Fingerprint.prototype.getCanvasFingerprint = function () {
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
// https://www.browserleaks.com/canvas#how-does-it-work
var txt = 'http://www.dataeye.com/';
ctx.textBaseline = "top";
ctx.font = "14px 'Arial'";
ctx.textBaseline = "alphabetic";
ctx.fillStyle = "#f60";
ctx.fillRect(125, 1, 62, 20);
ctx.fillStyle = "#069";
ctx.fillText(txt, 2, 15);
ctx.fillStyle = "rgba(102, 204, 0, 0.7)";
ctx.fillText(txt, 4, 17);
return canvas.toDataURL();
}
export default Fingerprint