Re: [websec] HSTS ABNF still broken: requires leading semi-colon

Tobias Gondrom <tobias.gondrom@gondrom.org> Sat, 24 March 2012 10:32 UTC

Return-Path: <tobias.gondrom@gondrom.org>
X-Original-To: websec@ietfa.amsl.com
Delivered-To: websec@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 37FBA21F86FD for <websec@ietfa.amsl.com>; Sat, 24 Mar 2012 03:32:11 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -96.605
X-Spam-Level:
X-Spam-Status: No, score=-96.605 tagged_above=-999 required=5 tests=[AWL=0.172, BAYES_00=-2.599, FH_HELO_EQ_D_D_D_D=1.597, HELO_DYNAMIC_IPADDR=2.426, HELO_EQ_DE=0.35, HELO_MISMATCH_DE=1.448, HTML_MESSAGE=0.001, USER_IN_WHITELIST=-100]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cv8FiEQebiHE for <websec@ietfa.amsl.com>; Sat, 24 Mar 2012 03:32:10 -0700 (PDT)
Received: from lvps83-169-7-107.dedicated.hosteurope.de (www.gondrom.org [83.169.7.107]) by ietfa.amsl.com (Postfix) with ESMTP id 590B121F86C1 for <websec@ietf.org>; Sat, 24 Mar 2012 03:32:08 -0700 (PDT)
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=gondrom.org; b=U9x1n5yKBTnh9AChFnWEVBDZ8pT7wKPuUSHhqdcA6VkKCuSdk4gnNJViIK6Jt6BZm6XH7QJOC9y+tf6czEkJmweeNnr2da7GUfXnNddI+OaNDbGiSkB1N2E6KdqzBhhs; h=Received:Received:Message-ID:Date:From:User-Agent:MIME-Version:To:CC:Subject:References:In-Reply-To:Content-Type;
Received: (qmail 11466 invoked from network); 24 Mar 2012 11:32:05 +0100
Received: from 94-194-102-93.zone8.bethere.co.uk (HELO ?192.168.1.76?) (94.194.102.93) by www.gondrom.org with (DHE-RSA-AES256-SHA encrypted) SMTP; 24 Mar 2012 11:32:05 +0100
Message-ID: <4F6DA2A5.9040103@gondrom.org>
Date: Sat, 24 Mar 2012 10:32:05 +0000
From: Tobias Gondrom <tobias.gondrom@gondrom.org>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:11.0) Gecko/20120310 Thunderbird/11.0
MIME-Version: 1.0
To: julian.reschke@gmx.de
References: <4F6D00C2.6090805@KingsMountain.com> <4F6D9F83.9000504@isode.com> <4F6DA1BC.7030605@gmx.de>
In-Reply-To: <4F6DA1BC.7030605@gmx.de>
Content-Type: multipart/alternative; boundary="------------020807040303080304070509"
Cc: websec@ietf.org
Subject: Re: [websec] HSTS ABNF still broken: requires leading semi-colon
X-BeenThere: websec@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: Web Application Security Minus Authentication and Transport <websec.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/websec>, <mailto:websec-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/websec>
List-Post: <mailto:websec@ietf.org>
List-Help: <mailto:websec-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/websec>, <mailto:websec-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sat, 24 Mar 2012 10:32:11 -0000

On 24/03/12 10:28, Julian Reschke wrote:
> On 2012-03-24 11:18, Alexey Melnikov wrote:
>> ...
>> I think this is fine. And you can enforce "can't be totally null" in
>> prose, if you don't want to fix this in ABNF.
>> ...
>
> There will always be constraints not checkable in the ABNF.
>
> I recommend to keep the ABNF simple (in particular not to include 
> syntactical constructs that vary by parameter name :-), and put all 
> other constraints either into prose, or into separate ABNF rules for 
> specific parameter values.
>
> Best regards, Julian
> _______________________________________________
> websec mailing list
> websec@ietf.org
> https://www.ietf.org/mailman/listinfo/websec

<hat="individual">
Fully agree with that recommendation.
+1

Tobias