[horde] Already authenticated

[Florent Massiera]

> > I would like to know if there is any way to avoid or pass authentication
> > information.
> > In fact, our user when they access to horde are already authenticated so
it's
> > annoying for them to authenticate again.
> > Thanks in advance.
>
> Yes, of course, but how to best do it would depend on the
> horde version you run and how you authenticate the other pages.

Actually I have Horde 2.1 - IMP 3.1 - Turba 1.1
When our users are authenticated, we create php session variables (but we
can have cookies or header).
What I did in my test platform is the change of the files
/horde/imp/redirect.php and /horde/imp/lib/IMP.php
But I would like to know if there is no better way to do it (like somewhere
in configuration files where you can put horde/imp authentication to true or
false).