Re: Login limitation?

Hi Jim,
so IIUC, I will have to schedule a program on the server which reads all
user information and if a new user is added it modifies the pg_hba.conf and
reloads the server?

thanks,
-- csaba

-----Original Message-----
From: Jim C. Nasby [mailto:jnasby(at)pervasive(dot)com]
Sent: Tuesday, November 29, 2005 12:46 AM
To: Egy?d Csaba
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: [GENERAL] Login limitation?

On Sun, Nov 27, 2005 at 12:32:06PM +0100, Egy?d Csaba wrote:
> Hi All,
>
> I'd like to know if there is a method to let a user login into only
> predefined databases? I know that I could edit pg_hba.conf to achive
> this, but
> - there will be many databases on the server with the same structure
> but with different data
> - there will be "local admins" who must be able to create new "local
users"
> (of their own db)
> - it is a win32 client application... so editing pg_hba.conf is not
> too easy...
>
> So I'd need an administrative method (command?) which is capable to
> define (in the server level) a set of databases (0, 1 or more) for
> every user which she can login and prevent her from logging in to any
> other databases. This data should be modified via SQL statements like
GRANT.
>
> I tried to REVOKE all priviges from a user on a db, but the user still
> able to login. Another question is that she can't do anything.
>
> Any ideas?

I think you're basically stuck with pg_hba.conf. There's been some functions
added to 8.1 that make it possible to do some more administrative stuff with
config files via SQL, but I'm not sure if they'd cover this case.

I can see where this could be a problem for people providing hosting; if
enough other users request this functionality it might make it onto the TODO
list.
--
Jim C. Nasby, Sr. Engineering Consultant jnasby(at)pervasive(dot)com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461

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