[Dovecot] Envelope From changed - why?

Tom Alsberg alsbergt at cs.huji.ac.il
Tue May 4 12:57:55 EEST 2004

So, Timo and others -

Any ideas, status, expectations, or hints, regarding this?

I haven't looked much since, but I'd like to fix it, and wouldn't want
to do it ugly (back-searching "\nFrom ")...  Where shall I try, or is
a fix (1.0 mbox support?) in its way?

  Thanks, cheers,
  -- Tom
On Wed, Apr 28, 2004 at 10:47:58AM +0300, I wrote (and probably nobody
> On Tue, Apr 27, 2004 at 09:48:31PM +0300, Timo Sirainen wrote:
> > On Tue, 2004-04-27 at 15:53, Tom Alsberg wrote:
> > > That's what I mean - when the IMAP COPY command is issued, the From_
> > > line should be copied together with the rest of the actual message.
> > 
> > I don't think I'll want to do the copying exactly,
> That's a shame...  Any tips, though, on how I could change it in the
> least ugly-hackish way?  (I'd like to see and know in order to
> understand the internal architecture of dovecot anyway, even if you
> are soon to implement it with the read and save API into the
> mainstream code track)
> > as the way COPY currently works is "read message" and "save
> > message", although maildir has special code for hardlink-copying. I
> > don't think mbox really deserves that..
> Well, OK... Not sure why, though - I'd think this would be a small
> piece of code specific to mbox (if done right), and would warrant a
> special case.
> > However, I could change read and save APIs so that the "envelope from"
> > can be read and written. With maildir reading would give NULL, and
> > writing would just ignore it. With mbox it would work right though, and
> > if it's NULL it'd do what it does now.
> Sounds like a good idea.  I'd also think of trying to base on
> Return-Path: if it's NULL when writing to an mbox, before dropping to
> inventing a completely fabricated one, but that's just an added
> bonus...
> Any idea as to when I could expect to have this implemented in
> dovecot?  (I'd love to help with it, given some guidance)
> Main question in my mind now about the code:  What data is kept in the
> context of a message, except for the istream pointing to the contents?
> (As in - where would you insert that "envelope from" field?  Would it
> just be a parameter to the functions, or would it be some field in the
> data structure representing a message?)
> I understood that in the current development dovecot, mbox support
> doesn't even work anymore...  I do hope that'll be fixed when it
> becomes the current stable branch.
> I must say that until now I really like dovecot, being the best IMAP
> server I've found until now (most suitable to my needs, but also clean
> and flexible, functioning well...).  Hopefully mbox support won't just
> be dropped at some point, as it is important for me, and I believe for
> other users as well. 
> I understood the direction of development right now is into making
> dovecot as modular as feasible, so maybe even if mbox support won't be
> in the main dovecot code, it could be an external module (with a clean
> enough API, I could even write and maintain an mbox module)
> Thank you, Timo, and the rest of the dovecot developers, for all the
> efforts into this neat piece of software :-)
>   Thanks again,
>   -- Tom

  Tom Alsberg - hacker (being the best description fitting this space)
  Web page:	http://www.cs.huji.ac.il/~alsbergt/
DISCLAIMER:  The above message does not even necessarily represent what
my fingers have typed on the keyboard, save anything further.

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