dovecot - Sep 2005 - Another address-spec problem

I've had complaints from users about "MISSING_DOMAIN" in header
fields
and I've tracked it down to having "." in an unquoted display
name.

By my reading of RFC2822 (especially section 4.1)

A N Other <a.n.other at somewhere.org>
"A. N. Other" <a.n.other at somewhere.org>

are legal, but

A. N. Other <a.n.other at somewhere.org>

is "obsolete", but should be supported by the server (no clients
should
do it).

I think the relevant syntax is

    phrase     = 1*word / obs-phrase
    word       = atom / quoted-string
    obs-phrase = word *(word / "." / CFWS)

and rfc822_parse_phrase() should be modified to cope with
"obs-phrase".

I'll have a go, but if Timo or anybody knows how to do it properly, that 
would be better!

Chris

-- 
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Christopher Wakelin,                           c.d.wakelin at reading.ac.uk
IT Services Centre, The University of Reading,  Tel: +44 (0)118 378 8439
Whiteknights, Reading, RG6 2AF, UK              Fax: +44 (0)118 975 3094

Here's a first attempt at a patch against Dovecot-1.0-stable. It
basically allows "." in the words as long as it's not the first
character of the first word.

The patch should work with Dovecot-1.0-alpha2 with very slight
modification (Timo put some comments in rfc822-parser.h which breaks the
diff).

So

A. N. Other <a.n.other at somewhere.org>
Andy N. Other <a.n.other at somewhere.org>
A.N.Other <a.no.other at somewhere.org>

but not

.A N. Other <a.n.other at somewhere.org>

should now work.

Chris

Chris Wakelin wrote:
> I've had complaints from users about "MISSING_DOMAIN" in
header fields
> and I've tracked it down to having "." in an unquoted display
name.
> 
> By my reading of RFC2822 (especially section 4.1)
> 
> A N Other <a.n.other at somewhere.org>
> "A. N. Other" <a.n.other at somewhere.org>
> 
> are legal, but
> 
> A. N. Other <a.n.other at somewhere.org>
> 
> is "obsolete", but should be supported by the server (no clients
should
> do it).
> 
> I think the relevant syntax is
> 
>    phrase     = 1*word / obs-phrase
>    word       = atom / quoted-string
>    obs-phrase = word *(word / "." / CFWS)
> 
> and rfc822_parse_phrase() should be modified to cope with
"obs-phrase".
> 
> I'll have a go, but if Timo or anybody knows how to do it properly,
that
> would be better!
> 
> Chris
> 

-- 
--+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+-
Christopher Wakelin,                           c.d.wakelin at reading.ac.uk
IT Services Centre, The University of Reading,  Tel: +44 (0)118 378 8439
Whiteknights, Reading, RG6 2AF, UK              Fax: +44 (0)118 975 3094
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