SIMPLE H. Schulzrinne Internet-Draft Columbia U. Expires: November 13, 2004 May 15, 2004 CIPID: Contact Information in Presence Information Data Format draft-ietf-simple-cipid-02 Status of this Memo By submitting this Internet-Draft, I certify that any applicable patent or other IPR claims of which I am aware have been disclosed, and any of which I become aware will be disclosed, in accordance with RFC 3668. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts. 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." The list of current Internet-Drafts can be accessed at http:// www.ietf.org/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on November 13, 2004. Copyright Notice Copyright (C) The Internet Society (2004). All Rights Reserved. Abstract The Presence Information Data Format (PIDF) defines a basic XML format for presenting presence information for a presentity. The Contact Information for Presence Information Data Format (CIPID) is an extension that adds elements to PIDF that provide additional contact information about a presentity and its contacts, including references to address book entries and icons. Schulzrinne Expires November 13, 2004 [Page 1] Internet-Draft CIPID May 2004 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Terminology and Conventions . . . . . . . . . . . . . . . . . 3 3. CIPID Elements . . . . . . . . . . . . . . . . . . . . . . . . 3 3.1 Card Element . . . . . . . . . . . . . . . . . . . . . . . 3 3.2 Homepage Element . . . . . . . . . . . . . . . . . . . . . 3 3.3 Icon Element . . . . . . . . . . . . . . . . . . . . . . . 4 3.4 Map Element . . . . . . . . . . . . . . . . . . . . . . . 4 3.5 Sound Element . . . . . . . . . . . . . . . . . . . . . . 4 4. Example . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5. The XML Schema Definition . . . . . . . . . . . . . . . . . . 5 6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 6 6.1 URN Sub-Namespace Registration for 'urn:ietf:params:xml:ns:pidf:cipid' . . . . . . . . . . . 6 6.2 Schema Registration for Schema urn:ietf:params:xml:ns:pidf:cipid' . . . . . . . . . . . . 7 7. Security Considerations . . . . . . . . . . . . . . . . . . . 7 8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 7 8.1 Normative References . . . . . . . . . . . . . . . . . . . . 7 8.2 Informative References . . . . . . . . . . . . . . . . . . . 8 Author's Address . . . . . . . . . . . . . . . . . . . . . . . 8 A. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 8 Intellectual Property and Copyright Statements . . . . . . . . 9 Schulzrinne Expires November 13, 2004 [Page 2] Internet-Draft CIPID May 2004 1. Introduction In its function of facilitating communication, the usefulness of presence information can be enhanced by providing basic information about a presentity or contact. This specification describes a basic set of information elements that allow a watcher to retrieve additional information about a presentity or contact. This specification defines extensions to the PIDF [5] XML [6] document format. We describe elements for providing a "business card", references to the homepage, map, representative sound and an icon. All elements can be used either for the whole presence document, extending , or for an individual tuple (or both). This additional presence information can be used in PIDF [5] documents, together with RPID [7], future-status [8] and other PIDF extensions. The namespace URI for these elements defined by this specification is a URN [2], using the namespace identifier 'ietf' defined by [3] and extended by [4]: urn:ietf:params:xml:ns:pidf:cipid All elements described in this document are optional and can be used within the PIDF element. 2. Terminology and Conventions The key words MUST, MUST NOT, REQUIRED, SHOULD, SHOULD NOT, RECOMMENDED, MAY, and OPTIONAL in this document are to be interpreted as described in BCP 14, RFC 2119 [1]. 3. CIPID Elements 3.1 Card Element The element includes a URI pointing to a business card, e.g., in LDIF [10] or vCard [9] format. 3.2 Homepage Element The element provides a URI pointing to general information about the tuple or presentity, typically a web home page. Schulzrinne Expires November 13, 2004 [Page 3] Internet-Draft CIPID May 2004 3.3 Icon Element The element provides a URI pointing to an image (icon) representing the tuple or presentity. The watcher MAY use this information to represent the tuple or presentity in a graphical user interface. Presentities SHOULD provide images of sizes and aspect ratios that are appropriate for rendering as an icon. Support for JPEG, PNG and GIF formats is RECOMMENDED. 3.4 Map Element The element provides a URI pointing to a map related to the tuple or presentity. The watcher MAY use this information to represent the tuple or presentity in a graphical user interface. The map may be either an image, an HTML client-side image map or a geographical information system (GIS) document, e.g., encoded as GML. Support for images formatted as PNG and GIF is RECOMMENDED. 3.5 Sound Element The element provides a URI pointing to a sound related to the tuple or presentity. The watcher MAY use the sound object, such as a MIDI or MP3 file, referenced by the URL to inform the watcher that the presentity has assumed the status OPEN. Implementors are advised to create user interfaces that provide the watcher with the opportunity to choose whether to play such sounds. 4. Example An example, combining RPID and CIPID, is shown below: closed Schulzrinne Expires November 13, 2004 [Page 4] Internet-Draft CIPID May 2004 open assistant http://example.com/~secretary http://example.com/~secretary/icon.gif http://example.com/~secretary/card.vcd assistant presentity sip:secretary@example.com My secretary http://example.com/~someone/card.vcd http://example.com/~someone http://example.com/~someone/icon.gif http://example.com/~someone/gml-map.xml http://example.com/~someone/whoosh.wav 5. The XML Schema Definition The schema is shown below. Schulzrinne Expires November 13, 2004 [Page 5] Internet-Draft CIPID May 2004 Describes CIPID extensions for PIDF. Figure 1: CIPID schema 6. IANA Considerations This document calls for IANA to register a new XML namespace URN and schema per [4]. 6.1 URN Sub-Namespace Registration for 'urn:ietf:params:xml:ns:pidf:cipid' URI: urn:ietf:params:xml:ns:pidf:cipid Description: This is the XML namespace for XML elements defined by RFCXXXX to describe contact information presence information extensions for the status element in the PIDF presence document format in the application/pidf+xml content type. Registrant Contact: IETF, SIMPLE working group, simple@ietf.org; Henning Schulzrinne, hgs@cs.columbia.edu XML: BEGIN Schulzrinne Expires November 13, 2004 [Page 6] Internet-Draft CIPID May 2004 CIPID -- Contact Information in Presence Information Data Format

Namespace for contact information presence extension (status)

urn:ietf:params:xml:ns:pidf:cipid

See RFCXXXX.

END 6.2 Schema Registration for Schema urn:ietf:params:xml:ns:pidf:cipid' URI: please assign Registrant Contact: IESG XML: See Figure 1 7. Security Considerations The security issues are similar to those for RPID [7]. Watchers need to restrict which types of content pointed to by elements they render. Also, accessing these URIs may in turn provide hints that the watcher is currently using the presence application. Thus, a presence application may want to cache these objects for later use. 8. References 8.1 Normative References [1] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [2] Moats, R., "URN Syntax", RFC 2141, May 1997. [3] Moats, R., "A URN Namespace for IETF Documents", RFC 2648, August 1999. [4] Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688, January 2004. Schulzrinne Expires November 13, 2004 [Page 7] Internet-Draft CIPID May 2004 [5] Sugano, H. and S. Fujimoto, "Presence Information Data Format (PIDF)", draft-ietf-impp-cpim-pidf-08 (work in progress), May 2003. [6] Yergeau, F., Bray, T., Paoli, J., Sperberg-McQueen, C. and E. Maler, "Extensible Markup Language (XML) 1.0 (Third Edition)", W3C REC REC-xml-20040204, February 2004. 8.2 Informative References [7] Schulzrinne, H., Gurbani, V., Kyzivat, P. and J. Rosenberg, "RPID: Rich Presence: Extensions to the Presence Information Data Format (PIDF)", draft-ietf-simple-rpid-03 (work in progress), March 2004. [8] Schulzrinne, H., "Timed Presence Extensions to the Presence Information Data Format(PIDF) to Indicate Presence Information for Past and Future Time Intervals", draft-ietf-simple-future-01 (work in progress), April 2004. [9] Dawson, F. and T. Howes, "vCard MIME Directory Profile", RFC 2426, September 1998. [10] Good, G., "The LDAP Data Interchange Format (LDIF) - Technical Specification", RFC 2849, June 2000. Author's Address Henning Schulzrinne Columbia University Department of Computer Science 450 Computer Science Building New York, NY 10027 US Phone: +1 212 939 7042 EMail: hgs+simple@cs.columbia.edu URI: http://www.cs.columbia.edu Appendix A. Acknowledgments This document is based on the discussions within the IETF SIMPLE working group. Vijay Gurbani, Hisham Khartabil, Paul Kyzivat, Eva Leppanen, Mikko Lonnfors, Jon Peterson and Jonathan Rosenberg have provided helpful comments. Schulzrinne Expires November 13, 2004 [Page 8] Internet-Draft CIPID May 2004 Intellectual Property Statement The IETF takes no position regarding the validity or scope of any Intellectual Property Rights or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; nor does it represent that it has made any independent effort to identify any such rights. Information on the IETF's procedures with respect to rights in IETF Documents can be found in BCP 78 and BCP 79. Copies of IPR disclosures made to the IETF Secretariat and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementers or users of this specification can be obtained from the IETF on-line IPR repository at http://www.ietf.org/ipr. The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights that may cover technology that may be required to implement this standard. Please address the information to the IETF at ietf-ipr@ietf.org. Disclaimer of Validity This document and the information contained herein are provided on an "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Copyright Statement Copyright (C) The Internet Society (2004). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. Acknowledgment Funding for the RFC Editor function is currently provided by the Internet Society. Schulzrinne Expires November 13, 2004 [Page 9]