monitor HTTP requests of external website

Question

I want to write a script generator based on whats happening on the website, and for that I have written javascript - ajax based script generator, where on every page i do include the js file and within function block of page where page is submited I call the function of javascript to initiate reading of page variables ( DOM ) by getElementsByTagName(*), and after looping through it, I write predefined format to a file using ajax.

this all is done for the same site where its running, however now as when I needed to implement same for any other site as recorder and script generator as whats done on the website and to log into file, neither I can include my script on to any other external website nor put function call before submit to read dom and throw into file.

here is dummy code of js

 beginRecording();

function beginRecording()
{
    if(RECORD_BIT == 1)
    { 
       processPageData();   
    }
}

function processPageData()
{
  var i
  var obj = document
  var posArray = new Array();
  var allElement = obj.getElementsByTagName("*");
  var dataArrayString = "";

  for(i=0; i < allElement.length; i++)
  {
    if (allElement[i].getAttribute('id') != null && allElement[i].getAttribute('id') != "") 
    {
        posArray[posArray.length] = allElement[i].getAttribute('id');
    }
 }

 for(i = 0 ; i < posArray.length ; i++)
 {
    dataArrayString = dataArrayString+"SET  "+posArray[i]+"="+getValueFromPage(posArray[i]);
 }



  writePostData(dataArrayString);

}

The function writePostData, does ajax and writes/ updates file on the server by logging what was on DOM element, and I send couple of more details liek GET/POST or page name and so on..

beginRecording() is called on the page before javascript does a submit as document.forms[0].submit(), so that it can capture POST.

I read about cross domain ajax, but still I am not sure how can I monitor HTTP (read GET / POST and data on page or URL) of any external website without adding my script into that file, and write to file

any help or direction would be great.

Answer 1

You can't include javascript on a remote site, or monitor it's HTTP requests both of those things would be catastrophic to security...