Network Working Group P. Saint-Andre Internet-Draft Cisco Intended status: Standards Track May 12, 2011 Expires: November 13, 2011 vCard KIND:thing draft-saintandre-vcarddav-thing-01 Abstract This document defines a value of "thing" for the vCard KIND property so that vCards can be used to represent physical objects and software applications. Status of this Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at http://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on November 13, 2011. 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. Saint-Andre Expires November 13, 2011 [Page 1] Internet-Draft vCard KIND:thing May 2011 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Meaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 4 5. Security Considerations . . . . . . . . . . . . . . . . . . . . 5 6. References . . . . . . . . . . . . . . . . . . . . . . . . . . 5 6.1. Normative References . . . . . . . . . . . . . . . . . . . 5 6.2. Informative References . . . . . . . . . . . . . . . . . . 5 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 5 Saint-Andre Expires November 13, 2011 [Page 2] Internet-Draft vCard KIND:thing May 2011 1. Introduction Version 4 of the vCard specification [VCARD] defines a new KIND property for the type of entity that a vCard represents. The "thing" value of the KIND property was removed from that specification, with the expectation it might be defined in a vCard extension. This document defines such an extension so that vCards can be used to represent things like physical objects and software applications. 2. Meaning When the KIND property has a value of "thing", the vCard represents a physical object (e.g., a building, a vehicle, or a machine) or a software application (e.g., an application server, client, or bot). As one example of the "thing" KIND, vCards are currently used in the Extensible Messaging and Presence Protocol [XMPP] to represent instant messaging servers that are deployed on the network. Although it might be desirable to define a more fine-grained taxonomy of things (e.g., a KIND of "thing" with a subtype of "vehicle"), such a taxonomy is out of scope for this document. The following base properties make sense for vCards that represent things (this list is not exhaustive, and other properties might be applicable as well): o ADR o EMAIL o FN o GEO o IMPP o KEY o KIND o LANG o LOGO o NOTE o ORG o PHOTO o REV o SOURCE o TEL o TZ o URL Because things do not have work places and personal lives, it makes no sense to use the "work" and "home" values of the TYPE parameter in a thing's vCard (see Section 5.6 of [VCARD]). Saint-Andre Expires November 13, 2011 [Page 3] Internet-Draft vCard KIND:thing May 2011 The properties in a thing's vCard apply to one of the following: o The thing itself (e.g., the FN property might represent the friendly name of an application service, the URL property might represent a website that contains further information about the service, and the ADR, GEO, and TZ properties might represent the physical address, geographical location, and timezone of the machine where the service is hosted). o An organization or person that owns the thing (e.g., the LOGO property might represent the corporate logo of a service provider). o A person or role that controls the thing (e.g., the TEL, EMAIL, and IMPP properties might represent ways to contact a server administrator). 3. Example The following example of an XMPP server is borrowed from [XMPP-VCARD] and uses the XML representation of vCard described in [VCARDXML]. jabber.org IM service http://www.jabber.org/ 1 en xmpp@jabber.org xmpp:jabber.org http://www.jabber.org/images/logo.png geo:42.25,-91.05 America/Chicago xmpp:jabber.org?vcard 19990104T122100Z thing 4. IANA Considerations The IANA is requested to add "thing" to the registry of property values for vCard4. In conformance with Section 10.2.6 of [VCARD], the registration is as follows, where the reference is to RFCXXXX. Saint-Andre Expires November 13, 2011 [Page 4] Internet-Draft vCard KIND:thing May 2011 Value: thing Purpose: The entity represented by the vCard is a physical object (e.g., a building, a vehicle, or a machine) or a software application (e.g., an application server, client, or bot). Conformance: This value can be used with the "KIND" property. Example: See Section 3 of RFCXXXX. 5. Security Considerations Use of vCards to represent physical objects and software applications is not envisioned to introduce security considerations beyond those specified for vCards in [VCARD]. 6. References 6.1. Normative References [VCARD] Perreault, S., "vCard Format Specification", draft-ietf-vcarddav-vcardrev-19 (work in progress), April 2011. 6.2. Informative References [VCARDXML] Perreault, S., "vCard XML Representation", draft-ietf-vcarddav-vcardxml-09 (work in progress), April 2011. [XMPP] Saint-Andre, P., "Extensible Messaging and Presence Protocol (XMPP): Core", RFC 6120, March 2011. [XMPP-VCARD] Mizzi, S. and P. Saint-Andre, "vCard4 Over XMPP", XSF XEP 0292, April 2011. Saint-Andre Expires November 13, 2011 [Page 5] Internet-Draft vCard KIND:thing May 2011 Author's Address Peter Saint-Andre Cisco 1899 Wyknoop Street, Suite 600 Denver, CO 80202 USA Phone: +1-303-308-3282 Email: psaintan@cisco.com Saint-Andre Expires November 13, 2011 [Page 6]