app/assets/javascripts/evercookie/evercookie.js.erb
/*jslint browser: true, nomen: false, plusplus: false, bitwise: false, maxerr: 50, indent: 2 */
/*
var ec = new <%= Evercookie.js_class %>();
// set a cookie "id" to "12345"
// usage: ec.set(key, value)
ec.set("id", "12345");
// retrieve a cookie called "id" (simply)
ec.get("id", function(value) { alert("Cookie value is " + value) });
// or use a more advanced callback function for getting our cookie
// the cookie value is the first param
// an object containing the different storage methods
// and returned cookie values is the second parameter
function getCookie(best_candidate, all_candidates)
{
alert("The retrieved cookie is: " + best_candidate + "\n" +
"You can see what each storage mechanism returned " +
"by looping through the all_candidates object.");
for (var item in all_candidates)
document.write("Storage mechanism " + item +
" returned " + all_candidates[item] + " votes<br>");
}
ec.get("id", getCookie);
*/
try{
(function (window) {
'use strict';
var document = window.document,
Image = window.Image,
globalStorage = window.globalStorage,
swfobject = window.swfobject;
try{
var localStore = window.localStorage
}catch(ex){}
try {
var sessionStorage = window.sessionStorage;
} catch (e) { }
function newImage(src) {
var img = new Image();
img.style.visibility = "hidden";
img.style.position = "absolute";
img.src = src;
}
function _ec_replace(str, key, value) {
if (str.indexOf("&" + key + "=") > -1 || str.indexOf(key + "=") === 0) {
// find start
var idx = str.indexOf("&" + key + "="),
end, newstr;
if (idx === -1) {
idx = str.indexOf(key + "=");
}
// find end
end = str.indexOf("&", idx + 1);
if (end !== -1) {
newstr = str.substr(0, idx) + str.substr(end + (idx ? 0 : 1)) + "&" + key + "=" + value;
} else {
newstr = str.substr(0, idx) + "&" + key + "=" + value;
}
return newstr;
} else {
return str + "&" + key + "=" + value;
}
}
function idb() {
if ('indexedDB' in window) {
return true
} else if (window.indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB) {
return true
} else {
return false
}
}
// necessary for flash to communicate with js...
// please implement a better way
var _global_lso;
function _<%= Evercookie.js_class %>_flash_var(cookie) {
_global_lso = cookie;
// remove the flash object now
var swf = document.getElementById("myswf");
if (swf && swf.parentNode) {
swf.parentNode.removeChild(swf);
}
}
/*
* Again, ugly workaround....same problem as flash.
*/
var _global_isolated;
function onSilverlightLoad(sender, args) {
var control = sender.getHost();
_global_isolated = control.Content.App.getIsolatedStorage();
}
function onSilverlightError(sender, args) {
_global_isolated = "";
}
var defaultOptionMap = {
history: false, // CSS history knocking or not .. can be network intensive
java: false, // Java applet on/off... may prompt users for permission to run.
tests: 3, //1000 what is it, actually?
baseurl: '', // base url for php, flash and silverlight assets
silverlight: false, // you might want to turn it off https://github.com/samyk/evercookie/issues/45
domain: '.' + window.location.host.replace(/:\d+/, ''), // Get current domain
<% if Evercookie.basic_auth %>
authPath: '<%= Evercookie.get_auth_path %>', // set to false to disable Basic Authentication cache
<% else %>
authPath: false, // set to false to disable Basic Authentication cache
<% end %>
pngCookieName: '<%= Evercookie.cookie_png %>',
pngPath: '<%= Evercookie.get_png_path %>',
etagCookieName: '<%= Evercookie.cookie_etag %>',
etagPath: '<%= Evercookie.get_etag_path %>',
cacheCookieName: '<%= Evercookie.cookie_cache %>',
cachePath: '<%= Evercookie.get_cache_path %>'
};
var _baseKeyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
/**
* @class Evercookie
* @param {Object} options
* @param {Boolean} options.history CSS history knocking or not .. can be network intensive
* @param {Boolean} options.java Java applet on/off... may prompt users for permission to run.
* @param {Boolean} options.silverlight you might want to turn it off https://github.com/samyk/evercookie/issues/45
* @param {Number} options.tests
* @param {String} options.baseurl base url for php, flash and silverlight assets
* @param {String|Function} options.domain as a string, domain for cookie, as a function, accept window object and return domain string
* @param {String} options.pngCookieName
* @param {String} options.pngPath
* @param {String} options.etagCookieName:
* @param {String} options.etagPath
* @param {String} options.cacheCookieName
* @param {String} options.cachePath
*/
function <%= Evercookie.js_class %>(options) {
options = options || {};
var opts = {};
for (var key in defaultOptionMap) {
var optValue = options[key];
if(typeof optValue !== 'undefined') {
opts[key] = optValue
} else {
opts[key] = defaultOptionMap[key];
}
}
if(typeof opts.domain === 'function'){
opts.domain = opts.domain(window);
}
var _ec_history = opts.history,
_ec_java = opts.java,
_ec_tests = opts.tests,
_ec_baseurl = opts.baseurl,
_ec_domain = opts.domain;
// private property
var self = this;
this._ec = {};
this.get = function (name, cb, dont_reset) {
self._<%= Evercookie.js_class %>(name, cb, undefined, undefined, dont_reset);
};
this.set = function (name, value) {
self._<%= Evercookie.js_class %>(name, function () {}, value);
};
this._<%= Evercookie.js_class %> = function (name, cb, value, i, dont_reset) {
if (self._<%= Evercookie.js_class %> === undefined) {
self = this;
}
if (i === undefined) {
i = 0;
}
// first run
if (i === 0) {
self.<%= Evercookie.js_class %>_database_storage(name, value);
self.<%= Evercookie.js_class %>_png(name, value);
self.<%= Evercookie.js_class %>_etag(name, value);
self.<%= Evercookie.js_class %>_cache(name, value);
self.<%= Evercookie.js_class %>_lso(name, value);
if (opts.silverlight) {
self.<%= Evercookie.js_class %>_silverlight(name, value);
}
if (opts.authPath) {
self.<%= Evercookie.js_class %>_auth(name, value);
}
if (_ec_java) {
self.<%= Evercookie.js_class %>_java(name, value);
}
self._ec.userData = self.<%= Evercookie.js_class %>_userdata(name, value);
self._ec.cookieData = self.<%= Evercookie.js_class %>_cookie(name, value);
self._ec.localData = self.<%= Evercookie.js_class %>_local_storage(name, value);
self._ec.globalData = self.<%= Evercookie.js_class %>_global_storage(name, value);
self._ec.sessionData = self.<%= Evercookie.js_class %>_session_storage(name, value);
self._ec.windowData = self.<%= Evercookie.js_class %>_window(name, value);
if (_ec_history) {
self._ec.historyData = self.<%= Evercookie.js_class %>_history(name, value);
}
}
// when writing data, we need to make sure lso and silverlight object is there
if (value !== undefined) {
if ((typeof _global_lso === "undefined" ||
typeof _global_isolated === "undefined") &&
i++ < _ec_tests) {
setTimeout(function () {
self._<%= Evercookie.js_class %>(name, cb, value, i, dont_reset);
}, 200);
}
}
// when reading data, we need to wait for swf, db, silverlight, java and png
else
{
if (
(
// we support local db and haven't read data in yet
(window.openDatabase && typeof self._ec.dbData === "undefined") ||
(idb() && (typeof self._ec.idbData === "undefined" || self._ec.idbData === "")) ||
(typeof _global_lso === "undefined") ||
(typeof self._ec.etagData === "undefined") ||
(typeof self._ec.cacheData === "undefined") ||
(typeof self._ec.javaData === "undefined") ||
(document.createElement("canvas").getContext && (typeof self._ec.pngData === "undefined" || self._ec.pngData === "")) ||
(typeof _global_isolated === "undefined")
) &&
i++ < _ec_tests
)
{
setTimeout(function () {
self._<%= Evercookie.js_class %>(name, cb, value, i, dont_reset);
}, 200);
}
// we hit our max wait time or got all our data
else
{
// get just the piece of data we need from swf
self._ec.lsoData = self.getFromStr(name, _global_lso);
_global_lso = undefined;
// get just the piece of data we need from silverlight
self._ec.slData = self.getFromStr(name, _global_isolated);
_global_isolated = undefined;
var tmpec = self._ec,
candidates = [],
bestnum = 0,
candidate,
item;
self._ec = {};
// figure out which is the best candidate
for (item in tmpec) {
if (tmpec[item] && tmpec[item] !== "null" && tmpec[item] !== "undefined") {
candidates[tmpec[item]] = candidates[tmpec[item]] === undefined ? 1 : candidates[tmpec[item]] + 1;
}
}
for (item in candidates) {
if (candidates[item] > bestnum) {
bestnum = candidates[item];
candidate = item;
}
}
// reset cookie everywhere
if (candidate !== undefined && (dont_reset === undefined || dont_reset !== 1)) {
self.set(name, candidate);
}
if (typeof cb === "function") {
cb(candidate, tmpec);
}
self.ajax({
url: "<%= Evercookie.get_save_path %>?name=" + name,
success: function (data) { }
});
}
}
};
this.<%= Evercookie.js_class %>_window = function (name, value) {
try {
if (value !== undefined) {
window.name = _ec_replace(window.name, name, value);
} else {
return this.getFromStr(name, window.name);
}
} catch (e) { }
};
this.<%= Evercookie.js_class %>_userdata = function (name, value) {
try {
var elm = this.createElem("div", "userdata_el", 1);
elm.style.behavior = "url(#default#userData)";
if (value !== undefined) {
elm.setAttribute(name, value);
elm.save(name);
} else {
elm.load(name);
return elm.getAttribute(name);
}
} catch (e) {}
};
this.ajax = function (settings) {
var headers, name, transports, transport, i, length;
headers = {
'X-Requested-With': 'XMLHttpRequest',
'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
};
transports = [
function () { return new XMLHttpRequest(); },
function () { return new ActiveXObject('Msxml2.XMLHTTP'); },
function () { return new ActiveXObject('Microsoft.XMLHTTP'); }
];
for (i = 0, length = transports.length; i < length; i++) {
transport = transports[i];
try {
transport = transport();
break;
} catch (e) {
}
}
transport.onreadystatechange = function () {
if (transport.readyState !== 4) {
return;
}
settings.success(transport.responseText);
};
transport.open('get', settings.url, true);
for (name in headers) {
transport.setRequestHeader(name, headers[name]);
}
transport.send();
};
this.<%= Evercookie.js_class %>_cache = function (name, value) {
if (value !== undefined) {
// make sure we have evercookie session defined first
document.cookie = opts.cacheCookieName + "=" + value + "; path=/; domain=" + _ec_domain;
// {{ajax request to opts.cachePath}} handles caching
self.ajax({
url: _ec_baseurl + opts.cachePath + "?name=" + name,
success: function (data) {}
});
} else {
// interestingly enough, we want to erase our evercookie
// http cookie so the php will force a cached response
var origvalue = this.getFromStr(opts.cacheCookieName, document.cookie);
self._ec.cacheData = undefined;
document.cookie = opts.cacheCookieName + "=; expires=Mon, 20 Sep 2010 00:00:00 UTC; path=/; domain=" + _ec_domain;
self.ajax({
url: _ec_baseurl + opts.cachePath + "?name=" + name,
success: function (data) {
// put our cookie back
document.cookie = opts.cacheCookieName + "=" + origvalue + "; expires=Tue, 31 Dec 2030 00:00:00 UTC; path=/; domain=" + _ec_domain;
self._ec.cacheData = data;
}
});
}
};
this.<%= Evercookie.js_class %>_auth = function (name, value) {
if (value !== undefined) {
// {{opts.authPath}} handles Basic Access Authentication
newImage('//' + value + '@' + location.host + _ec_baseurl + opts.authPath + "?name=" + name);
}
else {
self.ajax({
url: _ec_baseurl + opts.authPath + "?name=" + name,
success: function (data) {
self._ec.authData = data;
}
});
}
};
this.<%= Evercookie.js_class %>_etag = function (name, value) {
if (value !== undefined) {
// make sure we have evercookie session defined first
document.cookie = opts.etagCookieName + "=" + value + "; path=/; domain=" + _ec_domain;
// {{ajax request to opts.etagPath}} handles etagging
self.ajax({
url: _ec_baseurl + opts.etagPath + "?name=" + name,
success: function (data) {}
});
} else {
// interestingly enough, we want to erase our evercookie
// http cookie so the php will force a cached response
var origvalue = this.getFromStr(opts.etagCookieName, document.cookie);
self._ec.etagData = undefined;
document.cookie = opts.etagCookieName + "=; expires=Mon, 20 Sep 2010 00:00:00 UTC; path=/; domain=" + _ec_domain;
self.ajax({
url: _ec_baseurl + opts.etagPath + "?name=" + name,
success: function (data) {
// put our cookie back
document.cookie = opts.etagCookieName + "=" + origvalue + "; expires=Tue, 31 Dec 2030 00:00:00 UTC; path=/; domain=" + _ec_domain;
self._ec.etagData = data;
}
});
}
};
this.<%= Evercookie.js_class %>_java = function (name, value) {
var div = document.getElementById("ecAppletContainer");
// Exit if dtjava.js was not included in the page header.
if (typeof dtjava === "undefined") {
return;
}
// Create the container div if none exists.
if (div===null || div === undefined || !div.length) {
div = document.createElement("div");
div.setAttribute("id", "ecAppletContainer");
div.style.position = "absolute";
div.style.top = "-3000px";
div.style.left = "-3000px";
div.style.width = "1px";
div.style.height = "1px";
document.body.appendChild(div);
}
// If the Java applet is not yet defined, embed it.
if (typeof ecApplet === "undefined") {
dtjava.embed({
id: "ecApplet",
url: _ec_baseurl + "<%= Evercookie.js_class %>.jnlp",
width: "1px",
height: "1px",
placeholder: "ecAppletContainer"
}, {},{ onJavascriptReady: doSetOrGet });
// When the applet is loaded we will continue in doSetOrGet()
}
else {
// applet already running... call doGetOrSet() directly.
doSetOrGet("ecApplet");
}
function doSetOrGet(appletId) {
var applet = document.getElementById(appletId);
if (value !== undefined) {
applet.set(name,value);
}
else {
self._ec.javaData = applet.get(name);
}
}
// The result of a get() is now in self._ec._javaData
};
this.<%= Evercookie.js_class %>_lso = function (name, value) {
var div = document.getElementById("swfcontainer"),
flashvars = {},
params = {},
attributes = {};
if (div===null || div === undefined || !div.length) {
div = document.createElement("div");
div.setAttribute("id", "swfcontainer");
document.body.appendChild(div);
}
if (value !== undefined) {
flashvars.everdata = name + "=" + value;
}
params.swliveconnect = "true";
attributes.id = "myswf";
attributes.name = "myswf";
swfobject.embedSWF(_ec_baseurl + "<%= asset_path('ec.swf') %>", "swfcontainer", "1", "1", "9.0.0", false, flashvars, params, attributes);
};
this.<%= Evercookie.js_class %>_png = function (name, value) {
var canvas = document.createElement("canvas"),
img, ctx, origvalue;
canvas.style.visibility = "hidden";
canvas.style.position = "absolute";
canvas.width = 200;
canvas.height = 1;
if (canvas && canvas.getContext) {
// {{opts.pngPath}} handles the hard part of generating the image
// based off of the http cookie and returning it cached
img = new Image();
img.style.position = "absolute";
if (value !== undefined) {
// make sure we have evercookie session defined first
document.cookie = opts.pngCookieName + "=" + value + "; path=/; domain=" + _ec_domain;
} else {
self._ec.pngData = undefined;
ctx = canvas.getContext("2d");
// interestingly enough, we want to erase our evercookie
// http cookie so the php will force a cached response
origvalue = this.getFromStr(opts.pngCookieName, document.cookie);
document.cookie = opts.pngCookieName + "=; expires=Mon, 20 Sep 2010 00:00:00 UTC; path=/; domain=" + _ec_domain;
img.onload = function () {
// put our cookie back
document.cookie = opts.pngCookieName + "=" + origvalue + "; expires=Tue, 31 Dec 2030 00:00:00 UTC; path=/; domain=" + _ec_domain;
self._ec.pngData = "";
ctx.drawImage(img, 0, 0);
// get CanvasPixelArray from given coordinates and dimensions
var imgd = ctx.getImageData(0, 0, 200, 1),
pix = imgd.data, i, n;
// loop over each pixel to get the "RGB" values (ignore alpha)
for (i = 0, n = pix.length; i < n; i += 4) {
if (pix[i] === 0) {
break;
}
self._ec.pngData += String.fromCharCode(pix[i]);
if (pix[i + 1] === 0) {
break;
}
self._ec.pngData += String.fromCharCode(pix[i + 1]);
if (pix[i + 2] === 0) {
break;
}
self._ec.pngData += String.fromCharCode(pix[i + 2]);
}
};
}
img.src = _ec_baseurl + opts.pngPath + "?name=" + name;
img.style.visibility = "hidden";
}
};
this.<%= Evercookie.js_class %>_local_storage = function (name, value) {
try {
if (localStore) {
if (value !== undefined) {
localStore.setItem(name, value);
} else {
return localStore.getItem(name);
}
}
} catch (e) { }
};
this.<%= Evercookie.js_class %>_database_storage = function (name, value) {
try {
if (window.openDatabase) {
var database = window.openDatabase("sqlite_<%= Evercookie.js_class %>", "", "<%= Evercookie.js_class %>", 1024 * 1024);
if (value !== undefined) {
database.transaction(function (tx) {
tx.executeSql("CREATE TABLE IF NOT EXISTS cache(" +
"id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, " +
"name TEXT NOT NULL, " +
"value TEXT NOT NULL, " +
"UNIQUE (name)" +
")", [], function (tx, rs) {}, function (tx, err) {});
tx.executeSql("INSERT OR REPLACE INTO cache(name, value) " +
"VALUES(?, ?)",
[name, value], function (tx, rs) {}, function (tx, err) {});
});
} else {
database.transaction(function (tx) {
tx.executeSql("SELECT value FROM cache WHERE name=?", [name],
function (tx, result1) {
if (result1.rows.length >= 1) {
self._ec.dbData = result1.rows.item(0).value;
} else {
self._ec.dbData = "";
}
}, function (tx, err) {});
});
}
}
} catch (e) { }
};
this.<%= Evercookie.js_class %>_indexdb_storage = function(name, value) {
try {
if (!('indexedDB' in window)) {
indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction;
IDBKeyRange = window.IDBKeyRange || window.webkitIDBKeyRange || window.msIDBKeyRange;
}
if (indexedDB) {
var ver = 1;
//FF incognito mode restricts indexedb access
var request = indexedDB.open("idb_<%= Evercookie.js_class %>", ver);
request.onerror = function(e) { ;
}
request.onupgradeneeded = function(event) {
var db = event.target.result;
var store = db.createObjectStore("<%= Evercookie.js_class %>", {
keyPath: "name",
unique: false
})
}
if (value !== undefined) {
request.onsuccess = function(event) {
var idb = event.target.result;
if (idb.objectStoreNames.contains("<%= Evercookie.js_class %>")) {
var tx = idb.transaction(["<%= Evercookie.js_class %>"], "readwrite");
var objst = tx.objectStore("<%= Evercookie.js_class %>");
var qr = objst.put({
"name": name,
"value": value
})
} idb.close();
}
} else {
request.onsuccess = function(event) {
var idb = event.target.result;
if (!idb.objectStoreNames.contains("<%= Evercookie.js_class %>")) {
self._ec.idbData = undefined;
} else {
var tx = idb.transaction(["<%= Evercookie.js_class %>"]);
var objst = tx.objectStore("<%= Evercookie.js_class %>");
var qr = objst.get(name);
qr.onsuccess = function(event) {
if (qr.result === undefined) {
self._ec.idbData = undefined
} else {
self._ec.idbData = qr.result.value;
}
}
}
idb.close();
}
}
}
} catch (e) {}
};
this.<%= Evercookie.js_class %>_session_storage = function (name, value) {
try {
if (sessionStorage) {
if (value !== undefined) {
sessionStorage.setItem(name, value);
} else {
return sessionStorage.getItem(name);
}
}
} catch (e) { }
};
this.<%= Evercookie.js_class %>_global_storage = function (name, value) {
if (globalStorage) {
var host = this.getHost();
try {
if (value !== undefined) {
globalStorage[host][name] = value;
} else {
return globalStorage[host][name];
}
} catch (e) { }
}
};
this.<%= Evercookie.js_class %>_silverlight = function (name, value) {
/*
* Create silverlight embed
*
* Ok. so, I tried doing this the proper dom way, but IE chokes on appending anything in object tags (including params), so this
* is the best method I found. Someone really needs to find a less hack-ish way. I hate the look of this shit.
*/
var source = _ec_baseurl + "<%= Evercookie.js_class %>.xap",
minver = "4.0.50401.0",
initParam = "",
html;
if (value !== undefined) {
initParam = '<param name="initParams" value="' + name + '=' + value + '" />';
}
html =
'<object style="position:absolute;left:-500px;top:-500px" data="data:application/x-silverlight-2," type="application/x-silverlight-2" id="mysilverlight" width="0" height="0">' +
initParam +
'<param name="source" value="' + source + '"/>' +
'<param name="onLoad" value="onSilverlightLoad"/>' +
'<param name="onError" value="onSilverlightError"/>' +
'<param name="background" value="Transparent"/>' +
'<param name="windowless" value="true"/>' +
'<param name="minRuntimeVersion" value="' + minver + '"/>' +
'<param name="autoUpgrade" value="false"/>' +
'<a href="http://go.microsoft.com/fwlink/?LinkID=149156&v=' + minver + '" style="display:none">' +
'Get Microsoft Silverlight' +
'</a>' +
'</object>';
try{
document.body.appendChild(html);
}catch(ex){
}
};
// public method for encoding
this.encode = function (input) {
var output = "",
chr1, chr2, chr3, enc1, enc2, enc3, enc4,
i = 0;
input = this._utf8_encode(input);
while (i < input.length) {
chr1 = input.charCodeAt(i++);
chr2 = input.charCodeAt(i++);
chr3 = input.charCodeAt(i++);
enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;
if (isNaN(chr2)) {
enc3 = enc4 = 64;
} else if (isNaN(chr3)) {
enc4 = 64;
}
output = output +
_baseKeyStr.charAt(enc1) + _baseKeyStr.charAt(enc2) +
_baseKeyStr.charAt(enc3) + _baseKeyStr.charAt(enc4);
}
return output;
};
// public method for decoding
this.decode = function (input) {
var output = "",
chr1, chr2, chr3,
enc1, enc2, enc3, enc4,
i = 0;
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
while (i < input.length) {
enc1 = _baseKeyStr.indexOf(input.charAt(i++));
enc2 = _baseKeyStr.indexOf(input.charAt(i++));
enc3 = _baseKeyStr.indexOf(input.charAt(i++));
enc4 = _baseKeyStr.indexOf(input.charAt(i++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
output = output + String.fromCharCode(chr1);
if (enc3 !== 64) {
output = output + String.fromCharCode(chr2);
}
if (enc4 !== 64) {
output = output + String.fromCharCode(chr3);
}
}
output = this._utf8_decode(output);
return output;
};
// private method for UTF-8 encoding
this._utf8_encode = function (str) {
str = str.replace(/\r\n/g, "\n");
var utftext = "", i = 0, n = str.length, c;
for (; i < n; i++) {
c = str.charCodeAt(i);
if (c < 128) {
utftext += String.fromCharCode(c);
} else if ((c > 127) && (c < 2048)) {
utftext += String.fromCharCode((c >> 6) | 192);
utftext += String.fromCharCode((c & 63) | 128);
} else {
utftext += String.fromCharCode((c >> 12) | 224);
utftext += String.fromCharCode(((c >> 6) & 63) | 128);
utftext += String.fromCharCode((c & 63) | 128);
}
}
return utftext;
};
// private method for UTF-8 decoding
this._utf8_decode = function (utftext) {
var str = "",
i = 0, n = utftext.length,
c = 0, c1 = 0, c2 = 0, c3 = 0;
while (i < n) {
c = utftext.charCodeAt(i);
if (c < 128) {
str += String.fromCharCode(c);
i += 1;
} else if ((c > 191) && (c < 224)) {
c2 = utftext.charCodeAt(i + 1);
str += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
i += 2;
} else {
c2 = utftext.charCodeAt(i + 1);
c3 = utftext.charCodeAt(i + 2);
str += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
i += 3;
}
}
return str;
};
// this is crazy but it's 4am in dublin and i thought this would be hilarious
// blame the guinness
this.<%= Evercookie.js_class %>_history = function (name, value) {
// - is special
var baseElems = (_baseKeyStr + "-").split(""),
// sorry google.
url = "http://www.google.com/<%= Evercookie.js_class %>/cache/" + this.getHost() + "/" + name,
i, base,
letter = "",
val = "",
found = 1;
if (value !== undefined) {
// don't reset this if we already have it set once
// too much data and you can't clear previous values
if (this.hasVisited(url)) {
return;
}
this.createIframe(url, "if");
url = url + "/";
base = this.encode(value).split("");
for (i = 0; i < base.length; i++) {
url = url + base[i];
this.createIframe(url, "if" + i);
}
// - signifies the end of our data
url = url + "-";
this.createIframe(url, "if_");
} else {
// omg you got csspwn3d
if (this.hasVisited(url)) {
url = url + "/";
while (letter !== "-" && found === 1) {
found = 0;
for (i = 0; i < baseElems.length; i++) {
if (this.hasVisited(url + baseElems[i])) {
letter = baseElems[i];
if (letter !== "-") {
val = val + letter;
}
url = url + letter;
found = 1;
break;
}
}
}
// lolz
return this.decode(val);
}
}
};
this.createElem = function (type, name, append) {
var el;
if (name !== undefined && document.getElementById(name)) {
el = document.getElementById(name);
} else {
el = document.createElement(type);
}
el.style.visibility = "hidden";
el.style.position = "absolute";
if (name) {
el.setAttribute("id", name);
}
if (append) {
document.body.appendChild(el);
}
return el;
};
this.createIframe = function (url, name) {
var el = this.createElem("iframe", name, 1);
el.setAttribute("src", url);
return el;
};
// wait for our swfobject to appear (swfobject.js to load)
var waitForSwf = this.waitForSwf = function (i) {
if (i === undefined) {
i = 0;
} else {
i++;
}
// wait for ~2 seconds for swfobject to appear
if (i < _ec_tests && typeof swfobject === "undefined") {
setTimeout(function () {
waitForSwf(i);
}, 200);
}
};
this.<%= Evercookie.js_class %>_cookie = function (name, value) {
if (value !== undefined) {
// expire the cookie first
document.cookie = name + "=; expires=Mon, 20 Sep 2010 00:00:00 UTC; path=/; domain=" + _ec_domain;
document.cookie = name + "=" + value + "; expires=Tue, 31 Dec 2030 00:00:00 UTC; path=/; domain=" + _ec_domain;
} else {
return this.getFromStr(name, document.cookie);
}
};
// get value from param-like string (eg, "x=y&name=VALUE")
this.getFromStr = function (name, text) {
if (typeof text !== "string") {
return;
}
var nameEQ = name + "=",
ca = text.split(/[;&]/),
i, c;
for (i = 0; i < ca.length; i++) {
c = ca[i];
while (c.charAt(0) === " ") {
c = c.substring(1, c.length);
}
if (c.indexOf(nameEQ) === 0) {
return c.substring(nameEQ.length, c.length);
}
}
};
this.getHost = function () {
return window.location.host.replace(/:\d+/, '');
};
this.toHex = function (str) {
var r = "",
e = str.length,
c = 0,
h;
while (c < e) {
h = str.charCodeAt(c++).toString(16);
while (h.length < 2) {
h = "0" + h;
}
r += h;
}
return r;
};
this.fromHex = function (str) {
var r = "",
e = str.length,
s;
while (e >= 0) {
s = e - 2;
r = String.fromCharCode("0x" + str.substring(s, e)) + r;
e = s;
}
return r;
};
/**
* css history knocker (determine what sites your visitors have been to)
*
* originally by Jeremiah Grossman
* http://jeremiahgrossman.blogspot.com/2006/08/i-know-where-youve-been.html
*
* ported to additional browsers by Samy Kamkar
*
* compatible with ie6, ie7, ie8, ff1.5, ff2, ff3, opera, safari, chrome, flock
*
* - code@samy.pl
*/
this.hasVisited = function (url) {
if (this.no_color === -1) {
var no_style = this._getRGB("http://never-visited.com", -1);
if (no_style === -1) {
this.no_color = this._getRGB("http://this-" + Math.floor(Math.random() * 9999999) + "rand.com");
}
}
// did we give full url?
if (url.indexOf("https:") === 0 || url.indexOf("http:") === 0) {
return this._testURL(url, this.no_color);
}
// if not, just test a few diff types if (exact)
return this._testURL("http://" + url, this.no_color) ||
this._testURL("https://" + url, this.no_color) ||
this._testURL("http://www." + url, this.no_color) ||
this._testURL("https://www." + url, this.no_color);
};
/* create our anchor tag */
var _link = this.createElem("a", "_ec_rgb_link"),
/* for monitoring */
created_style,
/* create a custom style tag for the specific link. Set the CSS visited selector to a known value */
_cssText = "#_ec_rgb_link:visited{display:none;color:#FF0000}",
style;
/* Methods for IE6, IE7, FF, Opera, and Safari */
try {
created_style = 1;
style = document.createElement("style");
if (style.styleSheet) {
style.styleSheet.innerHTML = _cssText;
} else if (style.innerHTML) {
style.innerHTML = _cssText;
} else {
style.appendChild(document.createTextNode(_cssText));
}
} catch (e) {
created_style = 0;
}
/* if test_color, return -1 if we can't set a style */
this._getRGB = function (u, test_color) {
if (test_color && created_style === 0) {
return -1;
}
/* create the new anchor tag with the appropriate URL information */
_link.href = u;
_link.innerHTML = u;
// not sure why, but the next two appendChilds always have to happen vs just once
document.body.appendChild(style);
document.body.appendChild(_link);
/* add the link to the DOM and save the visible computed color */
var color;
if (document.defaultView) {
color = document.defaultView.getComputedStyle(_link, null).getPropertyValue("color");
} else {
color = _link.currentStyle.color;
}
return color;
};
this._testURL = function (url, no_color) {
var color = this._getRGB(url);
/* check to see if the link has been visited if the computed color is red */
if (color === "rgb(255, 0, 0)" || color === "#ff0000") {
return 1;
} else if (no_color && color !== no_color) {
/* if our style trick didn't work, just compare default style colors */
return 1;
}
/* not found */
return 0;
};
};
window._evercookie_flash_var = _<%= Evercookie.js_class %>_flash_var;
/**
* Because Evercookie is a class, it should has first letter in capital
* Keep first letter in small for legacy purpose
* @expose Evercookie
*/
window.<%= Evercookie.js_class %> = <%= Evercookie.js_class %>;
}(window));
}catch(ex){}