MBOX-Line: From guenther+imap at sendmail.com  Thu Aug 16 21:51:59 2012
To: imap-protocol@u.washington.edu
From: Philip Guenther <guenther+imap@sendmail.com>
Date: Fri Jun  8 12:34:48 2018
Subject: [Imap-protocol] IMAP part numbering corner case
In-Reply-To: <060A31A9-066E-43F0-97AF-4B68522832B1@iki.fi>
References: <502DBEA4.2070204@verizon.net>
	<alpine.BSO.2.00.1208162109520.13998@morgaine.smi.sendmail.com>
	<060A31A9-066E-43F0-97AF-4B68522832B1@iki.fi>
Message-ID: <alpine.BSO.2.00.1208162143500.13998@morgaine.smi.sendmail.com>

On Fri, 17 Aug 2012, Timo Sirainen wrote:
> On 17.8.2012, at 7.17, Philip Guenther wrote:
> >> [Outlook, I'm pretty sure, but it doesn't implement ID]:
> >> BODY[TEXT]: The entire inner message
> >> BODY[1]: The entire inner message
> >> BODY[1.1]: NIL
> > 
> > This violates this paragraph from RFC 3501, page 55:   
> >         A part of type MESSAGE/RFC822 also has nested part numbers,
> >         referring to parts of the MESSAGE part's body.
> > 
> > ...which when combined with the first quote above, means that "1.1" 
> > should be a valid specifier for the inner message's content.
> 
> Is it valid? 1.1 makes sense when it's a multipart, in which case it 
> refers to the first MIME part, but is it valid when ther's no multipart? 
> Looks like UW-IMAP allows it, but not 1.1.1, so maybe it was meant to be 
> valid. I could add it to my tests..

Flip it around.  Given a message, if you nest it inside another message as 
a message/rfc822 part, the addressing of its parts are formed by 
concatenating the addressing of the part it is nested as and the parts 
inside it.

Given this message
-----
Date: Fri, 01 Jan 2012 12:00 -0500
To: y@y.y
From: x@x.x
Subject: Blast from the future
MIME-Version:1.0
Content-Type: text/plain

Do you know what to do when you see this message?

-----

it has a single part, which can be addressed with the specifier "1".  So, 
if you nest it

-----
Date: Fri, 01 Jan 2010 12:00 -0500
To: x@x.x
From: y@y.y
Subject: download on demand problem
MIME-Version: 1.0
Content-Type: message/rfc822

Date: Fri, 01 Jan 2012 12:00 -0500
To: y@y.y
From: x@x.x
Subject: Blast from the future
MIME-Version:1.0
Content-Type: text/plain

Do you know what to do when you see this message?

-----

The entire inner message is "1", so the text of the inner message is the 
concatenation "1.1".


Philip Guenther

