Re: [Cbor] Zaheduzzaman Sarker's No Objection on draft-ietf-cbor-file-magic-11: (with COMMENT)

Carsten Bormann <cabo@tzi.org> Wed, 20 April 2022 16:31 UTC

Return-Path: <cabo@tzi.org>
X-Original-To: cbor@ietfa.amsl.com
Delivered-To: cbor@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 912593A088D; Wed, 20 Apr 2022 09:31:14 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.903
X-Spam-Level:
X-Spam-Status: No, score=-1.903 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_BLOCKED=0.001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_ZEN_BLOCKED_OPENDNS=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, URIBL_BLOCKED=0.001, URIBL_DBL_BLOCKED_OPENDNS=0.001, URIBL_ZEN_BLOCKED_OPENDNS=0.001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id UKKLfD24Qny5; Wed, 20 Apr 2022 09:31:10 -0700 (PDT)
Received: from gabriel-smtp.zfn.uni-bremen.de (gabriel-smtp.zfn.uni-bremen.de [134.102.50.15]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3EE893A08B0; Wed, 20 Apr 2022 09:31:09 -0700 (PDT)
Received: from [192.168.217.118] (p5089ad4f.dip0.t-ipconnect.de [80.137.173.79]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by gabriel-smtp.zfn.uni-bremen.de (Postfix) with ESMTPSA id 4Kk5lG3dPDzDCcX; Wed, 20 Apr 2022 18:31:06 +0200 (CEST)
Content-Type: text/plain; charset="utf-8"
Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.120.23.2.7\))
From: Carsten Bormann <cabo@tzi.org>
In-Reply-To: <165044403005.9373.3182771372557501317@ietfa.amsl.com>
Date: Wed, 20 Apr 2022 18:31:06 +0200
Cc: The IESG <iesg@ietf.org>, Christian Amsüss <christian@amsuess.com>, cbor@ietf.org, cbor-chairs@ietf.org, draft-ietf-cbor-file-magic@ietf.org
X-Mao-Original-Outgoing-Id: 672165066.358892-989dff881588f4fb04c055cafa7edfa1
Content-Transfer-Encoding: quoted-printable
Message-Id: <AF4E6D7A-10E3-4DB5-A6B5-9ADE2E4D0963@tzi.org>
References: <165044403005.9373.3182771372557501317@ietfa.amsl.com>
To: Zaheduzzaman Sarker <Zaheduzzaman.Sarker@ericsson.com>
X-Mailer: Apple Mail (2.3608.120.23.2.7)
Archived-At: <https://mailarchive.ietf.org/arch/msg/cbor/Jk5vu5TibC9u-qRnOghJmP2xUx8>
Subject: Re: [Cbor] Zaheduzzaman Sarker's No Objection on draft-ietf-cbor-file-magic-11: (with COMMENT)
X-BeenThere: cbor@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "Concise Binary Object Representation \(CBOR\)" <cbor.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/cbor>, <mailto:cbor-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/cbor/>
List-Post: <mailto:cbor@ietf.org>
List-Help: <mailto:cbor-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/cbor>, <mailto:cbor-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 20 Apr 2022 16:31:15 -0000

Hi Zahed,

thank you for this review.

I have collected my proposed changes based on these and other comments in 

https://github.com/cbor-wg/cbor-magic-number/pull/21

under the commit
https://github.com/cbor-wg/cbor-magic-number/pull/21/commits/c2fa2d2

Grüße, Carsten


[…]
> 
> The document, along with other ballot positions, can be found here:
> https://datatracker.ietf.org/doc/draft-ietf-cbor-file-magic/
> 
> 
> 
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
> 
> Thanks for working on this document. I kind of like the question/answer style
> of writing the document.
> 
> Some comments/questions below, and I think addressing them would help improving
> the document.
> 
> - Section 2.1: it say's
> 
>      This tag needs to be allocated by the author of the CBOR Protocol
> 
>   it was not clear to me if "this tag" is the same tag that needs IANA
>   registration or not. It needs some clarification text on that.

Well, the whole Section is about the "The CBOR Protocol Specific Tag”.

I clarified this into:

>> Allocation of the CBOR tag needs to be initiated by the author of the CBOR
>> Protocol, who can provide a proposed tag number.


> 
> - file(1) is both referred as command and program, I always thought it is a
> command.

It is a command that is, like the vast majority of UNIX shell commands, implemented by a program (which is usually stored in /usr/bin).
But we can be consistent here (always calling it a command).

> - Section 3.2: I didn't get the proper motivation for this section in this
> document. There were no mention of other CBOR data items and certainly they
> become the center piece in this section. I think it would be great to add some
> text about the motivation.

See Michael’s response.
In UNIX, many file formats can be concatenated by “cat”, so the resulting occurrence of mid-sequence labels is not an unusual consideration.

> - Speaking very frankly I feel like section 3.1 and section 3.2 are not the
> center part of this specification and should be moved to appendix section.

(See Michael’s response.)

Grüße, Carsten