Re: [apps-discuss] draft-kucherawy-rfc5451bis

Alessandro Vesely <vesely@tana.it> Sat, 23 March 2013 18:56 UTC

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Date: Sat, 23 Mar 2013 19:56:08 +0100
From: Alessandro Vesely <vesely@tana.it>
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Subject: Re: [apps-discuss] draft-kucherawy-rfc5451bis
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 On Fri 22/Mar/2013 20:22:43 +0100 Murray S. Kucherawy wrote:
> I've revised the grammar in the next draft to avoid this ambiguity.  Let
> me know if it works.  Essentially, "dot-atom" has been replaced by
> "value", which disallows the case you've illustrated here.

Hm... that way it becomes possible to have "dkim"="pass".  I'd beg for
"token", which is somewhat simpler, but it allows dots.  Wouldn't it be
possible to have a grammar that matches the actual use?  I mean, e.g.:

authserv-id = domain-name
     method = Keyword [ [CFWS] "/" [CFWS] version ]
     result = Keyword
   property = Keyword

"Keyword" is defined in RFC 5321, as well as "domain-name".  (It seems
to be useless to recall the definition from RFC 6376, as the domain
literal alternative that was in RFC 2821 has gone away.)