Re: [bug-mailutils] Problem with timeout interaction

[Alain Magloire]

> 
> Hi Jeff,
> 
> >    if (state != AUTHORIZATION)
> >      {
> >        pop3d_unlock ();
> > -      mailbox_flush (mbox, 0);
> >        mailbox_close (mbox);
> >        mailbox_destroy (&mbox);
> >      }
> 
> No, that would break the UIDL functionality:
> 
> RFC1939, Section 7, Page 11:
> 
>           The unique-id of a message is an arbitrary server-determined
>           string, consisting of one to 70 characters in the range 0x21
>           to 0x7E, which uniquely identifies a message within a
>           maildrop and which persists across sessions.  This
>           persistence is required even if a session ends without
>           entering the UPDATE state.
> 
> RFC1939 does not explicitly specify whether DELE marks are persistent
> across the invocations. The description of the UPDATE state in Section
> 6 only tells that POP3 must not enter UPDATE state and *remove* the
> marked messages on timeout. However it does not say that it must clear
> the deletion marks as well.
> 
> The real reason for the behaviour you describe is that libmailbox uses
> Status: header to store deletion marks. I do not say that this is wrong,
> right on the contrary, my guess is that it is OK.
> 
> However, we should decide if deletion marks should or should not be
> persistent. If they should, pop3d must not use attribute_set_deleted
> to mark deleted messages.
> 
> By the way, even if we make it so, there remains yet another way to get
> a deleted message in a mailbox: simply add the header "Status: D" when
> sending your message :^)
> 
> Opinions?
> 

Yes, this is troubling, scenario:
Work: via your mail client you mark this for deletion by do not expunge,(Mutt 
can do this, I think)
Home: start a POP3 session, to download an important email, quit(reaching the 
update state) ...
Work: Emails are gone ...


In any case, I do agree for POP3D if you quit before reaching
the update state any messages mark deleted should be unmark
and left untouch (except the UID, it is preserve across sessions).

But my question is:
In a POP3 session should the deleted messages in the update state(after the 
QUIT)
be __only the messages marked deleted in *that current pop3 session*__ not
messages marked(via Status: d) in an unrelated action on the mailbox ?

I think, sergey, you bring a good point, that we probably should
not use attribute_set_deleted() to mark message, but rather maintain
our own list to not to interfere whith any previous state of the mailbox.