Thread: psql patch: new host/port

psql patch: new host/port

From
David Fetter
Date:
Folks,

Please find enclosed a patch that lets you use \c to connect
(optionally) to a new host and port without exiting psql.

Cheers,
D
--
David Fetter david@fetter.org http://fetter.org/
phone: +1 415 235 3778

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Re: psql patch: new host/port

From
Michael Glaesemann
Date:
On Dec 9, 2005, at 18:10 , David Fetter wrote:

> Please find enclosed a patch that lets you use \c to connect
> (optionally) to a new host and port without exiting psql.

I'm not familiar enough with the psql code to be able to tell, but is  
this secure? The pg_hba.conf on the new server is enforced, I assume?

Michael Glaesemann
grzm myrealbox com



Re: psql patch: new host/port

From
Peter Eisentraut
Date:
Michael Glaesemann wrote:
> I'm not familiar enough with the psql code to be able to tell, but is
> this secure? The pg_hba.conf on the new server is enforced, I assume?

You don't need to be familiar with the psql code to know that it would 
be pretty stupid if client programs could override the server 
authentication setup.

-- 
Peter Eisentraut
http://developer.postgresql.org/~petere/


Re: psql patch: new host/port

From
Michael Glaesemann
Date:
On Dec 12, 2005, at 20:33 , Peter Eisentraut wrote:

> Michael Glaesemann wrote:
>> I'm not familiar enough with the psql code to be able to tell, but is
>> this secure? The pg_hba.conf on the new server is enforced, I assume?
>
> You don't need to be familiar with the psql code to know that it would
> be pretty stupid if client programs could override the server
> authentication setup.

I'm sorry if I wasn't clear. My point was I'm not familiar enough  
with the code to see if this implementation is secure. I do indeed  
realize that clients bypassing server authentication is a Bad Thing.

Michael Glaesemann
grzm myrealbox com





Re: psql patch: new host/port

From
"Andrew Dunstan"
Date:
Michael Glaesemann said:
>
> On Dec 12, 2005, at 20:33 , Peter Eisentraut wrote:
>
>> Michael Glaesemann wrote:
>>> I'm not familiar enough with the psql code to be able to tell, but is
>>> this secure? The pg_hba.conf on the new server is enforced, I assume?
>>
>> You don't need to be familiar with the psql code to know that it would
>> be pretty stupid if client programs could override the server
>> authentication setup.
>
> I'm sorry if I wasn't clear. My point was I'm not familiar enough
> with the code to see if this implementation is secure. I do indeed
> realize that clients bypassing server authentication is a Bad Thing.
>


The patch is to the client only, not even to libpq, so of course no auth
bypass is involved.

cheers

andrew




Re: psql patch: new host/port

From
Michael Glaesemann
Date:
On Dec 12, 2005, at 21:32 , Andrew Dunstan wrote:

> The patch is to the client only, not even to libpq, so of course no  
> auth
> bypass is involved.

Cool. Thanks for the explanation, Andrew.

Michael Glaesemann
grzm myrealbox com



Re: psql patch: new host/port

From
David Fetter
Date:
On Mon, Dec 12, 2005 at 09:20:57PM +0900, Michael Glaesmann wrote:
> 
> On Dec 12, 2005, at 21:32 , Andrew Dunstan wrote:
> 
> >The patch is to the client only, not even to libpq, so of course no
> >auth bypass is involved.
> 
> Cool. Thanks for the explanation, Andrew.

Is the patch suitable for a re-send to -patches?

Cheers,
D
-- 
David Fetter david@fetter.org http://fetter.org/
phone: +1 415 235 3778

Remember to vote!


Re: psql patch: new host/port

From
Tom Lane
Date:
Michael Glaesemann <grzm@myrealbox.com> writes:
> On Dec 9, 2005, at 18:10 , David Fetter wrote:
>> Please find enclosed a patch that lets you use \c to connect
>> (optionally) to a new host and port without exiting psql.

> I'm not familiar enough with the psql code to be able to tell, but is  
> this secure? The pg_hba.conf on the new server is enforced, I assume?

No, security is the server's problem.

What's not clear to me about this patch is what's the point.  It's
certainly not a feature we've heard any requests for.
        regards, tom lane


Re: psql patch: new host/port

From
David Fetter
Date:
On Mon, Dec 12, 2005 at 10:19:00AM -0500, Tom Lane wrote:
> Michael Glaesemann <grzm@myrealbox.com> writes:
> > On Dec 9, 2005, at 18:10 , David Fetter wrote:
> >> Please find enclosed a patch that lets you use \c to connect
> >> (optionally) to a new host and port without exiting psql.
> 
> > I'm not familiar enough with the psql code to be able to tell, but
> > is  this secure? The pg_hba.conf on the new server is enforced, I
> > assume?
> 
> No, security is the server's problem.
> 
> What's not clear to me about this patch is what's the point.  It's
> certainly not a feature we've heard any requests for.

Informally, I've heard some carping about how you can change DBs on
one server, but you have to exit the program if you want to change
servers.  The change is low-impact because \c continues to work
exactly as before when supplied with < 3 arguments :)

Cheers,
D
-- 
David Fetter david@fetter.org http://fetter.org/
phone: +1 415 235 3778

Remember to vote!