draft-ietf-extra-imap-list-myrights-04.txt		draft-ietf-extra-imap-list-myrights-05.txt
	EXTRA K. Murchison		EXTRA K. Murchison
	Internet-Draft B. Gondwana		Internet-Draft B. Gondwana
	Intended status: Standards Track FastMail		Intended status: Standards Track FastMail
	Expires: October 28, 2018 April 26, 2018		Expires: October 31, 2018 April 29, 2018
	IMAP4 Extension for Returning MYRIGHTS Information in Extended LIST		IMAP4 Extension for Returning MYRIGHTS Information in Extended LIST
	draft-ietf-extra-imap-list-myrights-04		draft-ietf-extra-imap-list-myrights-05
	Abstract		Abstract
	This document defines an extension to the IMAP LIST command that		This document defines an extension to the Internet Message Access
	allows the client to request the set of rights that the logged-in		Protocol (IMAP) LIST command that allows the client to request the
	user has been granted on mailboxes, along with other information		set of rights that the logged-in user has been granted on mailboxes,
	typically returned by the LIST command.		along with other information typically returned by the LIST command.
	Status of This Memo		Status of This Memo
	This Internet-Draft is submitted in full conformance with the		This Internet-Draft is submitted in full conformance with the
	provisions of BCP 78 and BCP 79.		provisions of BCP 78 and BCP 79.
	Internet-Drafts are working documents of the Internet Engineering		Internet-Drafts are working documents of the Internet Engineering
	Task Force (IETF). Note that other groups may also distribute		Task Force (IETF). Note that other groups may also distribute
	working documents as Internet-Drafts. The list of current Internet-		working documents as Internet-Drafts. The list of current Internet-
	Drafts is at https://datatracker.ietf.org/drafts/current/.		Drafts is at https://datatracker.ietf.org/drafts/current/.
	Internet-Drafts are draft documents valid for a maximum of six months		Internet-Drafts are draft documents valid for a maximum of six months
	and may be updated, replaced, or obsoleted by other documents at any		and may be updated, replaced, or obsoleted by other documents at any
	time. It is inappropriate to use Internet-Drafts as reference		time. It is inappropriate to use Internet-Drafts as reference
	material or to cite them other than as "work in progress."		material or to cite them other than as "work in progress."
	This Internet-Draft will expire on October 28, 2018.		This Internet-Draft will expire on October 31, 2018.
	Copyright Notice		Copyright Notice
	Copyright (c) 2018 IETF Trust and the persons identified as the		Copyright (c) 2018 IETF Trust and the persons identified as the
	document authors. All rights reserved.		document authors. All rights reserved.
	This document is subject to BCP 78 and the IETF Trust's Legal		This document is subject to BCP 78 and the IETF Trust's Legal
	Provisions Relating to IETF Documents		Provisions Relating to IETF Documents
	(https://trustee.ietf.org/license-info) in effect on the date of		(https://trustee.ietf.org/license-info) in effect on the date of
	publication of this document. Please review these documents		publication of this document. Please review these documents
	skipping to change at page 2, line 25 ¶		skipping to change at page 2, line 25 ¶
	8.1. Registration of IMAP capability LIST-MYRIGHTS . . . . . . 4		8.1. Registration of IMAP capability LIST-MYRIGHTS . . . . . . 4
	8.2. Registration of LIST-EXTENDED option MYRIGHTS . . . . . . 4		8.2. Registration of LIST-EXTENDED option MYRIGHTS . . . . . . 4
	9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 5		9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 5
	10. Normative References . . . . . . . . . . . . . . . . . . . . 5		10. Normative References . . . . . . . . . . . . . . . . . . . . 5
	Appendix A. Change History (To be removed by RFC Editor before		Appendix A. Change History (To be removed by RFC Editor before
	publication) . . . . . . . . . . . . . . . . . . . . 6		publication) . . . . . . . . . . . . . . . . . . . . 6
	Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 6		Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 6
	1. Introduction		1. Introduction
	IMAP clients typically fetch the set of rights granted on mailboxes		IMAP [RFC3501] clients typically fetch the set of rights granted on
	so they can expose the allowed functionality to the logged-in user.		mailboxes so they can expose the allowed functionality to the logged-
	In order to do that, the client is forced to issue a LIST or LSUB		in user. In order to do that, the client is forced to issue a LIST
	command to list all available mailboxes, followed by a MYRIGHTS		or LSUB command to list all available mailboxes, followed by a
	command for each mailbox found. This document defines an extension		MYRIGHTS command for each mailbox found. This document defines an
	to the to IMAP LIST command that is identified by the capability		extension to the to IMAP LIST command that is identified by the
	string "LIST-MYRIGHTS". The LIST-MYRIGHTS extension allows the		capability string "LIST-MYRIGHTS". The LIST-MYRIGHTS extension
	client to request the set of rights that the logged-in user has been		allows the client to request the set of rights that the logged-in
	granted on mailboxes, along with other information typically returned		user has been granted on mailboxes, along with other information
	by the LIST command.		typically returned by the LIST command.
	2. Conventions Used in This Document		2. Conventions Used in This Document
	In examples, "C:" indicates lines sent by a client that is connected		In examples, "C:" indicates lines sent by a client that is connected
	to a server. "S:" indicates lines sent by the server to the client.		to a server. "S:" indicates lines sent by the server to the client.
	The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",		The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
	"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and		"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
	"OPTIONAL" in this document are to be interpreted as described in		"OPTIONAL" in this document are to be interpreted as described in
	[RFC2119].		[RFC2119].
	skipping to change at page 3, line 7 ¶		skipping to change at page 3, line 7 ¶
	3. MYRIGHTS Return Option to LIST Command		3. MYRIGHTS Return Option to LIST Command
	[RFC4314] defines the MYRIGHTS command which is used by an IMAP		[RFC4314] defines the MYRIGHTS command which is used by an IMAP
	client to determine the set of rights that the logged-in user has		client to determine the set of rights that the logged-in user has
	been granted on a given mailbox. Frequently, a client will have to		been granted on a given mailbox. Frequently, a client will have to
	look up the rights for some or all of the mailboxes returned by the		look up the rights for some or all of the mailboxes returned by the
	LIST command. Doing so in multiple MYRIGHTS commands wastes		LIST command. Doing so in multiple MYRIGHTS commands wastes
	bandwidth and can degrade performance if the client does not pipeline		bandwidth and can degrade performance if the client does not pipeline
	the requests.		the requests.
	This document extends the LIST command with a new return option,		This document extends the LIST command with a new return option
	"MYRIGHTS", which allows the client to request all of the desired		[RFC5258], "MYRIGHTS", which allows the client to request all of the
	information in a single command. For each listable mailbox matching		desired information in a single command. For each listable mailbox
	the list pattern and selection options, the server MUST return an		matching the list pattern and selection options, the server MUST
	untagged LIST response and SHOULD also return an untagged MYRIGHTS		return an untagged LIST response and SHOULD also return an untagged
	response containing the set of rights granted to the logged-in user.		MYRIGHTS response containing the set of rights granted to the logged-
	The ordering of the responses is significant only in that the server		in user. The ordering of the responses is significant only in that
	MUST NOT send a MYRIGHTS response for a given mailbox before it sends		the server MUST NOT send a MYRIGHTS response for a given mailbox
	the LIST response for that mailbox.		before it sends the LIST response for that mailbox.
	If the server is unable to look up the set of rights for a given		If the server is unable to look up the set of rights for a given
	mailbox, it does not send the MYRIGHTS reply for that mailbox.		mailbox, it does not send the MYRIGHTS reply for that mailbox.
	Client authors ought to note that generating the MYRIGHTS responses		Client authors ought to note that generating the MYRIGHTS responses
	for a large number of mailboxes may be an expensive operation for the		for a large number of mailboxes may be an expensive operation for the
	server. Clients SHOULD use a suitable match pattern and/or selection		server. Clients SHOULD use a suitable match pattern and/or selection
	option to limit the set of mailboxes returned to only those whose		option to limit the set of mailboxes returned to only those whose
	rights in which they are interested.		rights in which they are interested.
	skipping to change at page 6, line 8 ¶		skipping to change at page 6, line 8 ¶
	<https://www.rfc-editor.org/info/rfc5234>.		<https://www.rfc-editor.org/info/rfc5234>.
	[RFC5258] Leiba, B. and A. Melnikov, "Internet Message Access		[RFC5258] Leiba, B. and A. Melnikov, "Internet Message Access
	Protocol version 4 - LIST Command Extensions", RFC 5258,		Protocol version 4 - LIST Command Extensions", RFC 5258,
	DOI 10.17487/RFC5258, June 2008,		DOI 10.17487/RFC5258, June 2008,
	<https://www.rfc-editor.org/info/rfc5258>.		<https://www.rfc-editor.org/info/rfc5258>.
	Appendix A. Change History (To be removed by RFC Editor before		Appendix A. Change History (To be removed by RFC Editor before
	publication)		publication)
			Changes from draft-ietf-extra-imap-list-myrights-04:
			o Added references for "IMAP" and "return option".
	Changes from draft-ietf-extra-imap-list-myrights-03:		Changes from draft-ietf-extra-imap-list-myrights-03:
	o Fixed a typo in the Abstract.		o Fixed a typo in the Abstract.
	Changes from draft-ietf-extra-imap-list-myrights-02:		Changes from draft-ietf-extra-imap-list-myrights-02:
	o WGLC editorial changes from Barry Leiba.		o WGLC editorial changes from Barry Leiba.
	Changes from draft-ietf-extra-imap-list-myrights-01:		Changes from draft-ietf-extra-imap-list-myrights-01:
End of changes. 7 change blocks.
	26 lines changed or deleted		30 lines changed or added
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