Sieve Notification Using Presence Information
RFC 6132

• Status
• IESG evaluation record
• IESG writeups
• Email expansions
• History

• Versions
• 04

Internet Engineering Task Force (IETF)                         R. George
Request for Comments: 6132                                      B. Leiba
Category: Standards Track                            Huawei Technologies
ISSN: 2070-1721                                                July 2011

             Sieve Notification Using Presence Information

Abstract

   This is a further extension to the Sieve mail filtering language
   Notification extension, defining presence information that may be
   checked through the notify_method_capability feature.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6132.

Copyright Notice

   Copyright (c) 2011 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

George & Leiba               Standards Track                    [Page 1]
RFC 6132                 Sieve Notify: Presence                July 2011

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 2
     1.1.  Terminology Used in This Document . . . . . . . . . . . . . 2
   2.  Testing Presence Information  . . . . . . . . . . . . . . . . . 2
   3.  Examples  . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
   4.  Security Considerations . . . . . . . . . . . . . . . . . . . . 6
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 6
   6.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 7
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 7
     7.1.  Normative References  . . . . . . . . . . . . . . . . . . . 7
     7.2.  Informative References  . . . . . . . . . . . . . . . . . . 8

1.  Introduction

   Sometimes, it's desirable to tailor Sieve [RFC5228] notifications to
   a user's current situation.  Presence information provides some
   information about the user that would be useful to have access to in
   these cases.  The Notification extension [RFC5435] defines a
   mechanism to test for presence (the notify_method_capability
   feature), and defines one test for presence (the "online"
   notification-capability, described in Section 5 of RFC 5435).  This
   extension defines more presence tests by registering additional
   notification-capability parameters in the IANA registry, allowing
   testing of a wider variety of presence information.

1.1.  Terminology Used in This Document

   The upper-case key words "MUST", "MUST NOT", "REQUIRED", "SHALL",
   "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in
   [RFC2119].

2.  Testing Presence Information

   This extension uses the notify_method_capability test, as defined in
   the Sieve [RFC5228] Notify extension [RFC5435], to test presence
   information.  When a Sieve event occurs (mail arrives) for a user, a
   Sieve script running on behalf of that user can present the user's
   presence URI (in the "notification-uri" parameter) and test a
   specific item of notification presence as defined below (in the
   "notification-capability" parameter) against one or more values (in
   the "key-list" parameter).

George & Leiba               Standards Track                    [Page 2]
RFC 6132                 Sieve Notify: Presence                July 2011

   This document defines an initial set of items of notification
   presence, which may be specified in the notification-capability
   parameter.  It is expected that future extensions will add additional
   presence items derived from diverse sources, including calendar
   information, geographic location, and so on.

   Note that, while the items below are documented as similar to items
   in Extensible Messaging and Presence Protocol (XMPP) [RFC6121], it is
   not the intent that this extension be tied to XMPP, nor to any
   particular source of presence, and flexible implementations will be