Re: qestion

On Thu, 15 May 2003, ivan wrote:

> On Thu, 15 May 2003, Stephan Szabo wrote:
>
> >
> > On Wed, 14 May 2003, ivan wrote:
> >
> > > i connect to my postgres only by socket tcp/ip , and i have to know what
> > > client is connected to postgres in plpgsql function. I have many useres
> > > in pg_hba.conf which can connect to server from all local network.
> > > Then i need know from which client is connection. Is same way to check it
> > > ? or rewrite postmaster ?
> >
> > Do you need the ip address or only what user is connected? The latter can
> > be got at with CURRENT_USER or USER.
>
>     Yes i know about CURRENTUSER , but i need ip address to intentify
> clients.

I don't think there's a builtin function that will give that to you, but
you may be able to write a C function that'll do that but I'm not sure
what'd be involved.

> > > ... oh , is possible to change pg_hba.conf in plpgsql function, ie, when i
> > > create new user (throught plpgsql func.) i need to add ip address, which
> > > will be used by this new user.
> >
> > Probably not.  You'd probably have to write a function in something else
> > and call it from the plpgsql function.  However, there's still an issue of
> > how to handle rollbacks since you can't easily roll back the changes.  It
> > might be better to have something that's connected and LISTENing and then
> > do a NOTIFY when you add users and have the outside thing figure out what
> > entries belong in pg_hba.conf.
> >
>
> but can i change pg_hba.conf with result , without restarting ?

You might need to HUP the postmaster, but you shouldn't need to shutdown
and restart.