AUTH command behaviour when authentication process failed or aborted by user is changed

Михаил Сандаков mmsandakov at gmail.com
Wed Dec 30 10:08:56 EET 2020


I found that the problem was already fixed in
https://github.com/dovecot/core/commit/d0ea7f9f4530878a40ae0275cf0c36d3ff9111fc.
So, I'm going to wait until the new dovecot release.
Thank you for your help!

сб, 26 дек. 2020 г. в 19:59, John Fawcett <john at voipsupport.it>:

> On 24/12/2020 08:42, Михаил Сандаков wrote:
> > Hi all,
> >
> > .....
> >
> > Also seems like new behaviour is not fully accorded to rfc1734
> > (https://tools.ietf.org/html/rfc1734
> > <https://tools.ietf.org/html/rfc1734>). Based on this part of rfc:
> > "If an AUTH
> >  command fails with a negative response, the session remains
> >  in the AUTHORIZATION state and client may try another
> >  authentication mechanism by issuing another AUTH command,
> >  or may attempt to authenticate by using the USER/PASS or
> >  APOP commands."
> > I think "AUTH command" means full auth command started with "AUTH",
> > not only authentication method. But I may be wrong in the
> > interpretation of this part.
> >
> Your reading of the RFC looks correct. AUTH commands start with the
> string "AUTH". This is no different after a negative response.
>
> John
> > I suppose this changes was made in commit
> >
> https://github.com/dovecot/core/commit/2c42881c056e5ab2e2e14b2f800d6dc72026399b
> > <
> https://github.com/dovecot/core/commit/2c42881c056e5ab2e2e14b2f800d6dc72026399b
> >,
> > but not sure about this. Seems like if authentication is aborted or
> > failed client->current_cmd is not going to be cleaned.
> >
> > So I suggest to revert old behaviour in this cases. If I am right with
> > commit, it seems like we just need to add clearing client->current_cmd
> > if the authentication process has failed somehow.
>
>
>
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