CardDAV: vCard Extensions to Web Distributed Authoring and Versioning (WebDAV)
RFC 6352

Internet Engineering Task Force (IETF)                          C. Daboo
Request for Comments: 6352                                         Apple
Category: Standards Track                                    August 2011
ISSN: 2070-1721

                      CardDAV: vCard Extensions to
           Web Distributed Authoring and Versioning (WebDAV)

Abstract

   This document defines extensions to the Web Distributed Authoring and
   Versioning (WebDAV) protocol to specify a standard way of accessing,
   managing, and sharing contact information based on the vCard format.

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/rfc6352.

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.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow

Daboo                        Standards Track                    [Page 1]
RFC 6352                         CardDAV                     August 2011

   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Table of Contents

   1.  Introduction and Overview  . . . . . . . . . . . . . . . . . .  4
   2.  Conventions  . . . . . . . . . . . . . . . . . . . . . . . . .  5
   3.  Requirements Overview  . . . . . . . . . . . . . . . . . . . .  6
   4.  Address Book Data Model  . . . . . . . . . . . . . . . . . . .  7
     4.1.  Address Book Server  . . . . . . . . . . . . . . . . . . .  7
   5.  Address Book Resources . . . . . . . . . . . . . . . . . . . .  7
     5.1.  Address Object Resources . . . . . . . . . . . . . . . . .  7
       5.1.1.  Data Type Conversion . . . . . . . . . . . . . . . . .  8
         5.1.1.1.  Additional Precondition for GET  . . . . . . . . .  8
     5.2.  Address Book Collections . . . . . . . . . . . . . . . . .  9
   6.  Address Book Feature . . . . . . . . . . . . . . . . . . . . . 10
     6.1.  Address Book Support . . . . . . . . . . . . . . . . . . . 10
       6.1.1.  Example: Using OPTIONS for the Discovery of
               Support for CardDAV  . . . . . . . . . . . . . . . . . 10
     6.2.  Address Book Properties  . . . . . . . . . . . . . . . . . 10
       6.2.1.  CARDDAV:addressbook-description Property . . . . . . . 10
       6.2.2.  CARDDAV:supported-address-data Property  . . . . . . . 11
       6.2.3.  CARDDAV:max-resource-size Property . . . . . . . . . . 12
     6.3.  Creating Resources . . . . . . . . . . . . . . . . . . . . 13
       6.3.1.  Extended MKCOL Method  . . . . . . . . . . . . . . . . 13
         6.3.1.1.  Example - Successful MKCOL Request . . . . . . . . 14
       6.3.2.  Creating Address Object Resources  . . . . . . . . . . 15
         6.3.2.1.  Additional Preconditions for PUT, COPY, and
                   MOVE . . . . . . . . . . . . . . . . . . . . . . . 16
         6.3.2.2.  Non-Standard vCard Properties and Parameters . . . 17
         6.3.2.3.  Address Object Resource Entity Tag . . . . . . . . 18
   7.  Address Book Access Control  . . . . . . . . . . . . . . . . . 18
     7.1.  Additional Principal Properties  . . . . . . . . . . . . . 18
       7.1.1.  CARDDAV:addressbook-home-set Property  . . . . . . . . 19
       7.1.2.  CARDDAV:principal-address Property . . . . . . . . . . 19