HP-UX AAA Server A.08.00.01 Administrator's Guide

the user. Preprocessing requires that you write or obtain a plug-in that will parse the
message and pass the processed A-V pairs to the iaaaUsers action.
Modify the state table to call the preprocessing plug-in when the message is first
received. Add a preprocessing state that calls the iaaaUsers action and transitions
to the UsersCheck state.
Custom State Tables 401