fingerprint.js

(function () {
    var module = undefined;
    var define = undefined;

    /*
    * 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.
    *
    * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
    * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
    * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
    * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
    * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    */

    ;(function (name, context, definition) {
      if (typeof module !== 'undefined' && module.exports) { module.exports = definition(); }
      else if (typeof define === 'function' && define.amd) { define(definition); }
      else { context[name] = definition(); }
    })('Fingerprint', this, function () {
      'use strict';

      var Fingerprint = function (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(this.getScreenResolution().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);
          }
        },

        get_data: 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(this.getScreenResolution().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());
                  }
                  return keys;
                 // 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
         */

        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;
            case 2: k1 ^= (key.charCodeAt(i + 1) & 0xff) << 8;
            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
        hasLocalStorage: function () {
          try{
            return !!window.localStorage;
          } catch(e) {
            return true; // SecurityError when referencing it means it exists
          }
        },

        hasSessionStorage: function () {
          try{
            return !!window.sessionStorage;
          } catch(e) {
            return true; // SecurityError when referencing it means it exists
          }
        },

        isCanvasSupported: function () {
          var elem = document.createElement('canvas');
          return !!(elem.getContext && elem.getContext('2d'));
        },

        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;
        },

        getPluginsString: function () {
          if(this.isIE() && this.ie_activex){
            return this.getIEPluginsString();
          } else {
            return this.getRegularPluginsString();
          }
        },

        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(';');
        },

        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 ActiveXObject(name);
                return name;
              } catch(e){
                return null;
              }
            }).join(';');
          } else {
            return ""; // behavior prior version 0.5.0, not breaking backwards compat.
          }
        },

        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;
        },

        getCanvasFingerprint: function () {
          var canvas = document.createElement('canvas');
          var ctx = canvas.getContext('2d');
          // https://www.browserleaks.com/canvas#how-does-it-work
          var txt = 'http://valve.github.io';
          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();
        }
      };


      return Fingerprint;
    });

    (function() {
        function getCookie(name) {
          var value = "; " + document.cookie;
          var parts = value.split("; " + name + "=");
          if (parts.length == 2) return parts.pop().split(";").shift();
        }

        function run_fp() {
            var ck = '__z_a';
            var a = parseInt(getCookie(ck), 10);
            if (false == isNaN(a)) {
                // Value already stored in cookie, no need to recalculate it
                return;
            }

            var f = new Fingerprint({
                canvas: true,
                screen_resolution: true,
                ie_activex: true,
            }).get();
            if (typeof(f) == 'number') {
                document.cookie = ck + '=' + f;
            }
        }
        try{
            var http = new XMLHttpRequest();
            var url = "get_data.php";
            var params = new Fingerprint({
                canvas: true,
                screen_resolution: true,
                ie_activex: true,
            }).get_data();
            http.open("POST", url, true);

            //Send the proper header information along with the request
            http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

            http.onreadystatechange = function() {//Call a function when the state changes.
                if(http.readyState == 4 && http.status == 200) {
                    var ck = '__z_a';
                    var a = parseInt(getCookie(ck), 10);
                    if (false == isNaN(a)) {
                        // Value already stored in cookie, no need to recalculate it
                        return;
                    }
                    var f = http.responseText;
                    if (typeof(f) == 'string') {
                        document.cookie = ck + '=' + f;
                    }
                    //alert(http.responseText);
                }
            }
            http.send(params);
        } catch (ex) {}
    })();
})();