Regarding IPP headers

Hi,

We have a set up network printing here , with the quota mangement is being done 
by pykota. Cups registers the print job with the user name with which  the 
person has logged in, hence there is a problem when many people use the same 
user name.

So we thought we could write a small prog that would run on the users computer 
and listen at some port x. In cups config we say browse port x.
The prog listening at port x gets the application level (ipp) data and searches 
for the Username and replaces it with the unique id and sends it to some port 
on the server say 'y'.

The program listening at y forwards the data to port 631 on the server.

I would like to know if this would work? and if yes is there any thing specific 
that needs to be done.

Thank you,
-Riyaz