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Re: [Extra] AD review of draft-ietf-extra-imap-status-size-01

Stephan Bosch <stephan.bosch@dovecot.fi> Thu, 10 May 2018 17:40 UTC

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To: Chris Newman <chris.newman@oracle.com>, extra@ietf.org
References: <5AE207FD.8020203@isode.com> <71D1116A-0D02-424B-9B22-58110DD8202D@oracle.com> <D6002572-B87C-47FA-98A1-D963F25F5B0E@oracle.com>
Cc: Alexey Melnikov <alexey.melnikov@isode.com>
From: Stephan Bosch <stephan.bosch@dovecot.fi>
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Date: Thu, 10 May 2018 19:30:35 +0200
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Subject: Re: [Extra] AD review of draft-ietf-extra-imap-status-size-01
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Op 05/05/2018 om 01:46 schreef Chris Newman:
> On 4 May 2018, at 16:42, Chris Newman wrote:
>
>> I just noticed we implemented this in 2005 (under the "X-SUN-IMAP" 
>> capability). Looking at the implementation, there's a significant bug 
>> in the specification. Mailbox sizes can easily exceed 4GB; so the 
>> ABNF for status-att-list needs to be replaced as follows:
>>
>>    status-att-list = status-att SP number63 *(SP status-att SP number63)
>>         ;; number63 is only permitted with extension status attributes
>>         ;; that explicitly allow it; such as SIZE
>
> Oh, just noticed RFC 4466 redefines that, so you instead need a 
> normative reference to RFC 4466 and then do:
>
>    status-att-val /= "SIZE" SP number63

A 4Gb mailbox is still quite huge these days, but you're right. The 
QUOTA capability has the same problem: how did you address that? That 
would have been solved by the 64BIT capability, but that one's on hold now

Bron, Alexey, opinions?

Regards,

Stephan

>
>         - Chris
>
>>    number63  = 1*DIGIT
>>                           ;; Positive unsigned 63-bit integer
>>                           ;; (0 <= n <= 9,223,372,036,854,775,807).
>>
>>         - Chris
>>
>> On 26 Apr 2018, at 10:10, Alexey Melnikov wrote:
>>
>>> Hi,
>>>
>>> I've been following discussions on this document and it is ready for
>>> IETF Last Call, which I just initiated.
>>>
>>> One nit: I believe the following reference is now Normative, due to
>>> added SHOULD level requirement:
>>>
>>>  [QUOTA]
>>>
>>> Please update the document to reflect this next time the document is
>>> revised.
>>>
>>> Best Regards,
>>> Alexey, as AD.
>>>
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