detect_ga_tracking.user.js

// ==UserScript==
// @name           detect_ga_tracking
// @namespace      http://webtech-walker.com/
// @description    Auto detect for Google Analytics _setCustomVar traking.
// @include        http://*
// @include        https://*
// ==/UserScript==

(function() {

var messages = [];
var scripts = document.getElementsByTagName('script');

Array.prototype.forEach.call(scripts, function(script) {
    var source = script.innerHTML.replace(/[\n\r]/g,'');

    source.replace(/_setCustomVar\(([^\)]+)\)/g, function(m) {
        var values = arguments[1].split(/,/);
        var slot   = values[0];
        var key    = values[1].replace(/['"]/g, '');
        var val    = values[2].replace(/['"]/g, '');
        var scope  = values[3] == 1 ? 'visitor' :
                     values[3] == 2 ? 'session' :
                     values[3] == 3 ? 'page'
                                    : 'unkonwn';

        messages.push("traking["+slot+"] "+ key + ' => ' + val + ' (' + scope + ')');
    });
});

if (messages.length) {
    var wrap = document.createElement('div');
    wrap.setAttribute('style', [
        'position: fixed',
        'top: 0',
        'right: 0',
        'background: rgba(0, 0, 0, 0.7)',
        'z-index: 999999',
        'color: #FFF',
        'text-align: left',
        'padding: 10px 30px 10px 10px',
    ].join(';'));
    wrap.innerHTML = '<span>this site is traking</span>';

    var close = document.createElement('span');
    close.setAttribute('style', [
        'background: #C00',
        'display: inline-block',
        'padding: 0 5px',
        'margin: 0 0 0 3px',
        'cursor: pointer',
        'position: absolute',
        'top: 5px',
        'right: 5px',
    ].join(';'));
    close.innerHTML = 'x';
    close.addEventListener('click', function() {
        wrap.style.display = 'none';
    }, false);
    wrap.appendChild(close);

    var message = document.createElement('div');
    message.innerHTML = messages.join('<br>');
    message.style.display = 'none';
    wrap.appendChild(message);

    wrap.addEventListener('mouseover', function() {
        message.style.display = 'block';
    }, false);

    wrap.addEventListener('mouseout', function() {
        message.style.display = 'none';
    }, false);

    document.body.appendChild(wrap);
}


})();