[jdev] Changing delivery presence

[Leonardo Galicia Jiménez]

Hi everybody, i wondering if there is a mechanism that permit to change the 
behavior of delivery presence to clients in a jabber server, programing 
somenthing like a plug-in without affect the source code of a jabber server. 
I have interest for implement the IETF geopriv requirements.
The geopriv requirements basically consist in a set of rules that the user 
define and the server apply to presence and location information before 
delivery to other users. For instance, decide the time, date, place or whom 
receive my information of presence and location information.

With this i would like to add code (plug-in, module, etc.) to jabber server 
that permit filter the information (presence and location) from users to 
others through jabber server.

Thanks you.
Leonardo.