Re: [Extra] imap4rev2: disallow "RENAME INBOX"

"Chris Newman" <chris.newman@oracle.com> Tue, 20 November 2018 22:00 UTC

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From: "Chris Newman" <chris.newman@oracle.com>
To: extra@ietf.org
Cc: "Bron Gondwana" <brong@fastmailteam.com>
Date: Tue, 20 Nov 2018 14:00:07 -0800
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Subject: Re: [Extra] imap4rev2: disallow "RENAME INBOX"
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On 9 Nov 2018, at 11:25, Brandon Long wrote:
> The things we didn't implement were things that were much harder 
> (substring
> searching is probably the main one)

A very good point. For IMAP4rev2, can we loosen the specified 
requirements for searching? At a minimum, I'd like to see word-based 
searching for message content to be considered valid by the standard 
(that is, a search for "ood" won't necessarily match a message 
containing the word "good").

		- Chris

> yes, we didn't reset the UID counter, I guess we could do that and the
> uidvalidity, but the initial impl didn't have a good way to change the
> underlying uidvalidity, so easier to leave the uid space the same.
>
> Brandon
>
> On Thu, Nov 8, 2018 at 6:54 AM Bron Gondwana <brong@fastmailteam.com>; 
> wrote:
>
>> I'm tempted to see what Gmail does too.
>>
>> . OK brongondwana@gmail.com authenticated (Success)
>> . rename INBOX oldinbox
>> . OK Success
>>
>> Well, what do you know.  They implemented it!
>>
>> ha...
>>
>> . select oldinbox
>> . move 1:* INBOX
>>
>> ...
>>
>> . OK [COPYUID 2 1:15214 16312:31525] (Success)
>>
>> So it looks like it didn't reset the UID counter on the INBOX.  I 
>> didn't
>> get the UIDVALIDITY of the INBOX at the start to compare.
>>
>> Bron.
>>
>> On Fri, Nov 9, 2018, at 01:02, Timo Sirainen wrote:
>>
>> On 8 Nov 2018, at 13.37, Bron Gondwana <brong@fastmailteam.com>; 
>> wrote:
>>
>>
>> This is one of the open issues from imap4rev2 - which extensions 
>> should be
>> part of the mandatory baseline.
>>
>> This one came from me.  I dislike the weirdness of "RENAME INBOX
>> Archive-foo" because of its special behaviour regarding sub 
>> mailboxes, and
>> the auto-recreation of the source mailbox, and all that jazz.
>>
>> Argument in favour of keeping it - it's easier for clients, which is 
>> part
>> of the point of IMAP4rev2 - servers have already suffered through 
>> this the
>> first time, and will need to keep IMAP4rev1 support for a while 
>> anyway
>> probably.
>>
>> Arguments for and against in response to this please.  Also arguments
>> about the suggested middleground saying that clients "SHOULD NOT" use 
>> it,
>> or something like that - with the flip side that servers MAY reject 
>> rename
>> of INBOX.
>>
>> We're particularly interested in "I use this, and want to keep it" 
>> from
>> either servers that see their clients doing it, client authors, or 
>> even
>> users!
>>
>> Dovecot has always been rejecting this when used with Maildir format
>> (other formats allow it):
>>
>> a rename inbox plop
>> a NO [CANNOT] Renaming INBOX isn't supported (0.001 + 0.000 secs).
>>
>> I've never heard anyone complain about it.
>>
>> I've a feeling Courier is rejecting it as well, but can't check now 
>> easily.
>>
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>>
>>
>> --
>>   Bron Gondwana, CEO, FastMail Pty Ltd
>>   brong@fastmailteam.com
>>
>>
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