RFC6474
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.
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Contents
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.
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.
Identification Property Extensions
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
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
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
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
Security Considerations
The properties defined in this document present no security considerations beyond those in Section 9 of the base vCard specification RFC6350.
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 | +-----------+--------------+------------------------+
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.
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.
Authors' Addresses
Kepeng Li Huawei Technologies Huawei Base, Bantian, Longgang District Shenzhen, Guangdong 518129 P.R. China
Phone: +86-755-28974289 EMail: [email protected]
Barry Leiba Huawei Technologies
Phone: +1 646 827 0648 EMail: [email protected] URI: http://internetmessagingtechnology.org/