[Users] check_from

[Timur Irmatov]

Hi!

I am new to SER, and have following question. How can I provide that:

1) Users can register only their sip addresses;
2) Users can use their username in sip From: field.

In my installation sip username and authentication usernames differ a
little. For example, sip username could be 112233, but auth username
is sip112233. So, I want to be sure that user that can successfully
autheticate as sip112233 will not use 345678 username, and always will
be using 112233 in From? I need something like check_from, but this
function requires identical sip and auth usernames.

Is this thing doable? If so, I will be glad to hear how I should do
this in openser.cfg or any hints/links that could point me in right
direction.

Thanks!


-- 
Timur Irmatov, JID: thor at jabber.org.au.