Parameter Value Encoding in iCalendar and vCard
draft-daboo-ical-vcard-parameter-encoding-02

The information below is for an old version of the document
Document Type Active Internet-Draft (individual in app area)
Last updated 2013-01-01 (latest revision 2012-10-22)
Stream IETF
Intended RFC status Proposed Standard
Formats plain text pdf html
Stream WG state (None)
Consensus Unknown
Document shepherd None
IESG IESG state Waiting for AD Go-Ahead::Revised I-D Needed
Telechat date
Needs 5 more YES or NO OBJECTION positions to pass.
Responsible AD Barry Leiba
Send notices to cyrus@daboo.name, draft-daboo-ical-vcard-parameter-encoding@tools.ietf.org, douglm@rpi.edu
Network Working Group                                           C. Daboo
Internet-Draft                                                     Apple
Updates: 5545,6350 (if approved)                        October 22, 2012
Intended status: Standards Track
Expires: April 25, 2013

            Parameter Value Encoding in iCalendar and vCard
              draft-daboo-ical-vcard-parameter-encoding-02

Abstract

   This specification updates the iCalendar and vCard data formats to
   allow parameter values to include certain characters forbidden by the
   existing specifications.

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
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   This Internet-Draft will expire on April 25, 2013.

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   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
   2.  Conventions Used in This Document . . . . . . . . . . . . . . . 3
   3.  Parameter Value Encoding Scheme . . . . . . . . . . . . . . . . 3
     3.1.  iCalendar Example . . . . . . . . . . . . . . . . . . . . . 4
     3.2.  vCard Examples  . . . . . . . . . . . . . . . . . . . . . . 4
   4.  Security Considerations . . . . . . . . . . . . . . . . . . . . 5
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 5
   6.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 5
   7.  Normative References  . . . . . . . . . . . . . . . . . . . . . 5
   Appendix A.  Choice of Quoting Mechanism  . . . . . . . . . . . . . 5
   Appendix B.  Change History (To be removed by RFC Editor
                before publication)  . . . . . . . . . . . . . . . . . 6
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . . . 7

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1.  Introduction

   The iCalendar [RFC5545] specification defines a standard way to
   describe calendar data.  The vCard [RFC6350] specification defines a
   standard way to describe contact data.  Both of these use a similar
   text-based data format.  Each iCalendar and vCard data object can
   include "properties" which have "parameters" and a "value".  The
   value of a "parameter" is typically a token or URI value, but a
   "generic" text value is also allowed.  However, the syntax rules for
   both iCalendar and vCard prevent the use of a double-quote character
   or control characters in such values, though double-quote and some
   subset of control characters are allowed in the actual property
   values.

   As more and more extensions are being developed for these data
   formats, there is a need to allow at least double-quotes and line
   feeds to be included in parameter values.  The \-escaping mechanism
   used for property text values is not defined for use with parameter
   values and cannot be easily used in a backwards compatible manner.
   This specification defines a new character escaping mechanism,
   compatible with existing parsers and chosen to minimise any impact on
   existing data.

2.  Conventions Used in This Document

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
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