dovecot - Apr 2005 - cutting everything after @

Hello,


 I am migrating one server to dovecot. The only problem is, that users
 have logins with @domain as part of their user name. I want to use pam
 auth (for other reasons, if only for dovecot, I would use mysql, but I
 need the same password db to be used for other services, like samba).

 Is there a way to allow this type of login? Just cut everything
 beginning with @. I can change the source code, but then I don't get
 nice automatic upgrades.

 Or can this be done easily with PAM? 

  Thanks,


   Juraj.

On Wednesday 27 Apr 2005 11:50 am, Juraj Bednar wrote:
> 
>  Is there a way to allow this type of login? Just cut everything
>  beginning with @. I can change the source code, but then I don't get
>  nice automatic upgrades.
You can just specify this when creating the query for the dovecot mysql 
interface, it has a predefined pattern (%n) for username part of 
username at domain, which you can use in the query.

Debian dovecot package includes a dovecot-mysql.conf that explains this in 
sufficient detail for most purposes.

Strangely enough I've just been doing the exact opposite with Postfix and 
Postfix virtual users...
>  Or can this be done easily with PAM?
Can anything be done "easily" in PAM? ;)

Probably - I'd have no idea where to start.

On Wednesday 27 April 2005 11:50, Juraj Bednar wrote:
> Hello,
>
>
>  I am migrating one server to dovecot. The only problem is, that users
>  have logins with @domain as part of their user name. I want to use pam
>  auth (for other reasons, if only for dovecot, I would use mysql, but I
>  need the same password db to be used for other services, like samba).
>
>  Is there a way to allow this type of login? Just cut everything
>  beginning with @. I can change the source code, but then I don't get
>  nice automatic upgrades.
>
>  Or can this be done easily with PAM?
>
>   Thanks,
>
>
>    Juraj.
Would using passwd-file as your passwd database be acceptable? The 
authentication won't go via PAM, if that is what are looking for, but if you
point passwd-file at a copy of the system passwd file you should be able to 
run an unmodified dovecot and use a single password for your services. Then 
just write a very short script to:

o filter out only the mail accounts from your master passwd, joe, bob, mary.
o rewrite the entries into user at domain:password:::::etc format.

Then either run this every so often, or use the 'unix passwd sync'
feature of
samba to make sure it is synchronised when a user changes their password from 
Windows.

HTH,
-- 
Dominic
GoodforBusiness.co.uk
I.T. Services for SMEs in the UK.