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Internet Engineering Task Force (IETF) K. Li
Request for Comments: 6474 B. Leiba
Category: Standards Track Huawei Technologies
ISSN: 2070-1721 December 2011
vCard Format Extensions: Place of Birth, Place and Date of Death
Abstract
The base vCard 4.0 specification defines a large number of
properties, including date of birth. This specification adds three
new properties to vCard 4.0: place of birth, place of death, and date
of death.
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/rfc6474.
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.
Li & Leiba Standards Track [Page 1]
RFC 6474 Birth/Death Extensions December 2011
Table of Contents
1. Introduction ....................................................2
1.1. Terminology Used in This Document ..........................2
2. Identification Property Extensions ..............................2
2.1. Property: BIRTHPLACE .......................................2
2.2. Property: DEATHPLACE .......................................3
2.3. Property: DEATHDATE ........................................4
3. Security Considerations .........................................5
4. IANA Considerations .............................................5
5. Acknowledgements ................................................5
6. Normative References ............................................5
1. Introduction
The base vCard 4.0 specification [RFC6350] defines a large number of
properties, including date of birth. This specification adds three
new properties to vCard 4.0: place of birth, place of death, and date
of death.
1.1. Terminology Used in This Document
The 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].
Syntax specifications shown here use the augmented Backus-Naur Form
(ABNF) as described in [RFC5234], and are specified as in the base
vCard specification [RFC6350].
2. Identification Property Extensions
2.1. Property: BIRTHPLACE
Namespace:
Property name: BIRTHPLACE
Purpose: To specify the place of birth of the object the vCard
represents.
Value type: A single text value (default) or a single URI value.
Cardinality: *1
Property parameters: VALUE, LANGUAGE
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RFC 6474 Birth/Death Extensions December 2011
Description:
Format definition:
BIRTHPLACE-param = "VALUE=" ("text" / "uri")
BIRTHPLACE-value = text / uri
; Value type and VALUE parameter MUST match.
BIRTHPLACE-param =/ altid-param / language-param / any-param
Examples:
BIRTHPLACE:Babies'R'Us Hospital
BIRTHPLACE;VALUE=uri:http://example.com/hospitals/babiesrus.vcf
BIRTHPLACE;VALUE=uri:geo:46.769307,-71.283079
2.2. Property: DEATHPLACE
Namespace:
Property name: DEATHPLACE
Purpose: To specify the place of death of the object the vCard
represents.
Value type: A single text value (default) or a single URI value.
Cardinality: *1
Property parameters: VALUE, LANGUAGE
Description:
Format definition:
DEATHPLACE-param = "VALUE=" ("text" / "uri")
DEATHPLACE-value = text / uri
; Value type and VALUE parameter MUST match.
DEATHPLACE-param =/ altid-param / language-param / any-param
Examples:
DEATHPLACE:Aboard the Titanic\, near Newfoundland
DEATHPLACE;VALUE=uri:http://example.com/ships/titanic.vcf
DEATHPLACE;VALUE=uri:geo:41.731944,-49.945833
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RFC 6474 Birth/Death Extensions December 2011
2.3. Property: DEATHDATE
Namespace:
Property name: DEATHDATE
Purpose: To specify the date of death of the object the vCard
represents.
Value type: The default is a single date-and-or-time value. It can
also be reset to a single text value.
Cardinality: *1
Property parameters: VALUE, CALSCALE, LANGUAGE
CALSCALE can only be present when the value is a
date-and-or-time value and actually contains a date or date-time.
LANGUAGE can only be present when the value is text.
Description: The presence of a DEATHDATE property indicates that the
subject of the vCard is known to be dead. The absence
of this property makes no statement one way or the
other.
Format definition:
DEATHDATE-param = DEATHDATE-param-date / DEATHDATE-param-text
DEATHDATE-value = date-and-or-time / text
; Value type and VALUE parameter MUST match.
DEATHDATE-param-date = "VALUE=date-and-or-time" / calscale-param
; calscale-param can only be present when DEATHDATE-value is
; date-and-or-time and actually contains a date or date-time.
DEATHDATE-param-date = "VALUE=text" / language-param
DEATHDATE-param =/ altid-param / any-param
Examples:
DEATHDATE:19960415
DEATHDATE:--0415
DEATHDATE;19531015T231000Z
DEATHDATE;VALUE=text:circa 1800
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RFC 6474 Birth/Death Extensions December 2011
3. Security Considerations
The properties defined in this document present no security
considerations beyond those in Section 9 of the base vCard
specification [RFC6350].
4. IANA Considerations
IANA has added the following entries to the vCard Properties
registry, defined in Section 10.3.1 of [RFC6350].
+-----------+--------------+------------------------+
| Namespace | Property | Reference |
+-----------+--------------+------------------------+
| | BIRTHPLACE | [RFC6474], Section 2.1 |
| | DEATHPLACE | [RFC6474], Section 2.2 |
| | DEATHDATE | [RFC6474], Section 2.3 |
+-----------+--------------+------------------------+
5. Acknowledgements
The authors of this document would like to thank Simon Perreault and
Pete Resnick, the authors of a draft version of RFC 6350 whence the
properties defined herein originated.
6. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC5234] Crocker, D., Ed., and P. Overell, "Augmented BNF for
Syntax Specifications: ABNF", STD 68, RFC 5234,
January 2008.
[RFC6350] Perreault, S., "vCard Format Specification", RFC 6350,
August 2011.
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RFC 6474 Birth/Death Extensions December 2011
Authors' Addresses
Kepeng Li
Huawei Technologies
Huawei Base, Bantian, Longgang District
Shenzhen, Guangdong 518129
P.R. China
Phone: +86-755-28974289
EMail: likepeng@huawei.com
Barry Leiba
Huawei Technologies
Phone: +1 646 827 0648
EMail: barryleiba@computer.org
URI: http://internetmessagingtechnology.org/
Li & Leiba Standards Track [Page 6]