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Re: [stir] Proposal for update of erratum #6519 - ppt syntax

Marc Petit-Huguenin <marc@petit-huguenin.org> Thu, 22 April 2021 18:03 UTC

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To: Christer Holmberg <christer.holmberg@ericsson.com>, Roman Shpount <roman@telurix.com>
Cc: Russ Housley <housley@vigilsec.com>, IETF STIR Mail List <stir@ietf.org>
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From: Marc Petit-Huguenin <marc@petit-huguenin.org>
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Date: Thu, 22 Apr 2021 11:03:43 -0700
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Subject: Re: [stir] Proposal for update of erratum #6519 - ppt syntax
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On 4/22/21 10:54 AM, Christer Holmberg wrote:
> Hi,
> 
> Doesn't the SIP ABNF allow spaces (LWS) between the different "syntax parts", DQUOTE and token in this case?

RFC 5234:

"Any grammar that wishes to permit linear white space around
  delimiters or string segments must specify it explicitly."

> 
> Regards,
> 
> Christer
> 
> ________________________________
> From: Roman Shpount <roman@telurix.com>
> Sent: Thursday, April 22, 2021 8:49 PM
> To: Christer Holmberg <christer.holmberg@ericsson.com>
> Cc: Marc Petit-Huguenin <marc@petit-huguenin.org>; Russ Housley <housley@vigilsec.com>; IETF STIR Mail List <stir@ietf.org>
> Subject: Re: [stir] Proposal for update of erratum #6519 - ppt syntax
> 
> On Thu, Apr 22, 2021 at 1:43 PM Christer Holmberg <christer.holmberg@ericsson.com<mailto:christer.holmberg@ericsson.com>> wrote:
> How does the suggested "DQUOTE token DQUOTE" syntax prevent spaces between the quotes and the token characters?
> 
> 
> DQUOTE = %x22
> token = 1*( alphanum /  "-" /  "." /  "!" /  "%" /  "*" /  "_" /  "+" /  "`" /  "'" /  "~" )
> 
> Based on this,  "DQUOTE token DQUOTE" cannot contain spaces.
> _____________
> Roman Shpount
> 


-- 
Marc Petit-Huguenin
Email: marc@petit-huguenin.org
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