Re: [Exim] CRAM-MD5 fudging

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Autor: John Jetmore
Data:  
Para: exim-users
Asunto: Re: [Exim] CRAM-MD5 fudging
On Mon, 10 Mar 2003, Philip Hazel wrote:

> This sounds like item 59 on the Wish List:
>
> ------------------------------------------------------------------------------
> (59) 26-Jun-02 M A "custom" authenticator
>
> ... that is simply a front end to external code. For example, there may be
> an external API that hides the user password and does CRAM-MD5 when passed the
> details of the challenge and response.
> ------------------------------------------------------------------------------
>
> > 3) if I implement this variable cleanly, is there a chance of it being
> >    adopted into the main source tree so I don't have to maintain a branch?

>
> I think this will need a whole new authenticator in addition to the
> variable, but I have not thought about this at all.


after I implemented PLAIN and LOGIN as radius queries, I found out that
our radius server lies about the passwords for some users (This is done on
purpose and makes sense in the context of NASes). I could probably fix
it, but given this obstacle and the exim work, I'm dropping it at least
until #59 is implemented.

That said, I still think it could be done with plaintext:

radius_cram:
driver: plaintext
public_name = CRAM-MD5
server_prompts = $auth_cram_challenge
server_condition = ${if radius{$auth_cram_challenge@cram:$1}{yes}{no}

but it's moot now, I guess...

Thanks
--John