samba - May 2000 - What user on what computer?

Hallo!

I found a quite usefull hint about email-notification using samba by simply
writing a Mailslot-message-command into the users .forward-file.
That is quite nice, but there is a small problem: While the username is still
the same, so does not the computername.
People can log on every computer in a network, so the computername varies.
I am looking for a method to run a script - on the server side (!!) at each
logon and logoff of an user, so a user-database can be maintained.
I could write a script getting the computer a user logged in out of that
database/table.

How could I solve that problem?



Saluti,

Ludwig

Re:
> Date:   Tue, 30 May 2000 07:57:17 +0200
> From:   "Ludwig Meyerhoff" <ludwig@antar.com>
> To:     samba@samba.org
> Subject: What user on what computer?
> 
> Hallo!
> 
> I found a quite usefull hint about email-notification using samba by
> simply writing a Mailslot-message-command into the users .forward-file. 
> That is quite nice, but there is a small problem: While the username is
> still the same, so does not the computername.  People can log on every
> computer in a network, so the computername varies.  I am looking for a
> method to run a script - on the server side (!!) at each logon and
> logoff of an user, so a user-database can be maintained.  I could write
> a script getting the computer a user logged in out of that
> database/table. 
> 
> How could I solve that problem?
It is not quite clear from your message what you are trying to achieve,
because if what you want is UNIX utmp support, then you don't need a
script.

Anyway, two possibilities for you to explore:

1. At Samba 2.0.7 there is new, experimental, support for UNIX "utmp"
   files.  Basically compile samba 2.0.7 "--with-utmp" and put
"utmp=yes"
   into smb.conf for shares you wish to track.  But it is new, and there
   were a few problems at 2.0.7 (since fixed) on some versions of UNIX.

2. If you want to run a script, look at the "preexec" and
"postexec"
   parameters (and maybe, with care, "root preexec" and "root
postexec").

Hope that helps.

-- 

:  David Lee                                I.T. Service          :
:  Systems Programmer                       Computer Centre       :
:                                           University of Durham  :
:  http://www.dur.ac.uk/~dcl0tdl            South Road            :
:                                           Durham                :
:  Phone: +44 191 374 2882                  U.K.                  :

[Ludwig Meyerhoff <ludwig@antar.com>]
> That is quite nice, but there is a small problem: While the username
> is still the same, so does not the computername.
To track down a user $nt_user on an NT machine:

  nmblookup -S "${nt_user}#03" | awk '/<00> -  /{print
$1}'

I have no idea if this works in Windows95/98.  Note also that nmblookup
does not pick up your smb.conf settings so if you have a WINS server
you will want to add "-R -U{ip-of-wins-server}".

Peter