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RFC 6351

xCard: vCard XML Representation

Pages: 22
Proposed Standard
Errata
Updated by:  6868

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Internet Engineering Task Force (IETF)                      S. Perreault
Request for Comments: 6351                                      Viagenie
Category: Standards Track                                    August 2011
ISSN: 2070-1721


                    xCard: vCard XML Representation

Abstract

This document defines the XML schema of the vCard data format. 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/rfc6351. 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.
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Table of Contents

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 2 3. The Schema . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4. Example: Author's XML vCard . . . . . . . . . . . . . . . . . 3 5. Design Considerations . . . . . . . . . . . . . . . . . . . . 4 5.1. Extensibility . . . . . . . . . . . . . . . . . . . . . . 6 5.2. Limitations . . . . . . . . . . . . . . . . . . . . . . . 7 6. Format Conversions . . . . . . . . . . . . . . . . . . . . . . 8 7. Security Considerations . . . . . . . . . . . . . . . . . . . 10 8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 11 8.1. Registration of the XML Namespace . . . . . . . . . . . . 11 8.2. Media Type . . . . . . . . . . . . . . . . . . . . . . . . 11 9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 12 10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 12 10.1. Normative References . . . . . . . . . . . . . . . . . . . 12 10.2. Informative References . . . . . . . . . . . . . . . . . . 13 Appendix A. Relax NG Schema . . . . . . . . . . . . . . . . . . . 14

1. Introduction

vCard [RFC6350] is a data format for representing and exchanging information about individuals and other entities. It is a text-based format (as opposed to a binary format). This document defines xCard, an XML [W3C.REC-xml-20081126] representation for vCard. The underlying data structure is exactly the same, enabling a 1-to-1 mapping between the original vCard format and the XML representation. The XML formatting may be preferred in some contexts where an XML engine is readily available and may be reused instead of writing a standalone vCard parser. Earlier work on an XML format for vCard was started in 1998 by Frank Dawson [VCARD-DTD]. Sadly, it did not take over the world.

2. Conventions

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].

3. The Schema

The schema is expressed in the RELAX NG language [ISO.19757-2.2008] and is found in Appendix A.
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4. Example: Author's XML vCard

<?xml version="1.0" encoding="UTF-8"?> <vcards xmlns="urn:ietf:params:xml:ns:vcard-4.0"> <vcard> <fn><text>Simon Perreault</text></fn> <n> <surname>Perreault</surname> <given>Simon</given> <additional/> <prefix/> <suffix>ing. jr</suffix> <suffix>M.Sc.</suffix> </n> <bday><date>--0203</date></bday> <anniversary> <date-time>20090808T1430-0500</date-time> </anniversary> <gender><sex>M</sex></gender> <lang> <parameters><pref><integer>1</integer></pref></parameters> <language-tag>fr</language-tag> </lang> <lang> <parameters><pref><integer>2</integer></pref></parameters> <language-tag>en</language-tag> </lang> <org> <parameters><type><text>work</text></type></parameters> <text>Viagenie</text> </org> <adr> <parameters> <type><text>work</text></type> <label><text>Simon Perreault 2875 boul. Laurier, suite D2-630 Quebec, QC, Canada G1V 2M2</text></label> </parameters> <pobox/> <ext/> <street>2875 boul. Laurier, suite D2-630</street> <locality>Quebec</locality> <region>QC</region> <code>G1V 2M2</code> <country>Canada</country> </adr> <tel>
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         <parameters>
           <type>
             <text>work</text>
             <text>voice</text>
           </type>
         </parameters>
         <uri>tel:+1-418-656-9254;ext=102</uri>
       </tel>
       <tel>
         <parameters>
           <type>
             <text>work</text>
             <text>text</text>
             <text>voice</text>
             <text>cell</text>
             <text>video</text>
           </type>
         </parameters>
         <uri>tel:+1-418-262-6501</uri>
       </tel>
       <email>
         <parameters><type><text>work</text></type></parameters>
         <text>simon.perreault@viagenie.ca</text>
       </email>
       <geo>
         <parameters><type><text>work</text></type></parameters>
         <uri>geo:46.766336,-71.28955</uri>
       </geo>
       <key>
         <parameters><type><text>work</text></type></parameters>
         <uri>http://www.viagenie.ca/simon.perreault/simon.asc</uri>
       </key>
       <tz><text>America/Montreal</text></tz>
       <url>
         <parameters><type><text>home</text></type></parameters>
         <uri>http://nomis80.org</uri>
       </url>
     </vcard>
   </vcards>

5. Design Considerations

The general idea is to map vCard parameters, properties, and value types to XML elements. For example, the "FN" property is mapped to the "fn" element. In turn, that element contains a text element whose content corresponds to the vCard property's value.
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   vCard parameters are also mapped to XML elements.  They are contained
   in the <parameters> element, which is contained in property elements.
   For example, the "TYPE" parameter applied to the "TEL" property would
   look like the following in XML:

     <tel>
       <parameters>
         <type>
           <text>voice</text>
           <text>video</text>
         </type>
       </parameters>
       <uri>tel:+1-555-555-555</uri>
     </tel>

   Parameters taking a list of values are simply repeated multiple
   times, once for each value in the list.

   Properties having structured values (e.g., the "N" property) are
   expressed by XML element trees.  Element names in that tree (e.g.,
   "surname", "given", etc.) do not have a vCard equivalent since they
   are identified by position in plain vCard.

   Line folding is a non-issue in XML.  Therefore, the mapping from
   vCard to XML is done after the unfolding procedure is carried out.
   Conversely, the mapping from XML to vCard is done before the folding
   procedure is carried out.

   A top-level <vcards> element is used as root.  It contains one or
   more <vcard> elements, each representing a complete vCard.  The
   <vcards> element MUST be present even when only a single vCard is
   present in an XML document.

   The group construct (Section 3.2 in [RFC6350]) is represented with
   the <group> element.  The "name" attribute contains the group's name.
   For example:
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     <vcards>
       <vcard>
         <group name="contact">
           <fn>...</fn>
           <email>...</email>
         </group>
         <group name="media">
           <photo>...</photo>
         </group>
         <categories>...</categories>
       </vcard>
     </vcards>

   is equivalent to:

     BEGIN:VCARD
     VERSION:4.0
     contact.FN=...
     contact.EMAIL=...
     media.PHOTO=...
     CATEGORIES=...
     END:VCARD

5.1. Extensibility

The original vCard format is extensible. New properties, parameters, data types and values (collectively known as vCard elements, not to be confused with XML elements) can be registered with IANA (see [RFC6350], Section 10.2). It is expected that these vCard extensions will also specify extensions to the XML format described in this document. New XML vCard property and parameter element names MUST be lower- case. This is necessary to ensure that round-tripping between XML and plain-text vCard works correctly. Unregistered extensions (i.e., those starting with "X-" and "VND-...-") are expressed in XML by using elements starting with "x-" and "vnd-...-". Usage of XML namespaces [W3C.REC-xml-names-20091208] for extensibility is RECOMMENDED for extensions that have no equivalent in plain-text vCard. Refer to Section 6 for the implications when converting between plain-text vCard and XML.
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   Examples:

     <x-my-prop>
       <parameters>
         <pref><integer>1</integer></pref>
       </parameters>
       <text>value goes here</text>
     </x-my-prop>

     <ext:my-prop
         ext:xmlns="http://example.com/extensions/my-vcard">
       <parameters>
         <pref><integer>1</integer></pref>
       </parameters>                 <!-- Core vCard elements  -->
       <text>value goes here</text>  <!-- are still accessible -->
     </ext:my-prop>

   Note that extension elements do not need the "X-" or "VND-" prefix in
   XML.  The XML namespace mechanism is sufficient.

   A vCard XML parser MUST ignore XML elements and attributes for which
   it doesn't recognize the expanded name.  The normal behavior of
   ignoring XML processing instructions whose target is not recognized
   MUST also be followed.

   In the original vCard format, the "VERSION" property was mandatory
   and played a role in extensibility.  In XML, this property is absent.
   Its role is played by the vCard core namespace identifier, which
   includes the version number. vCard revisions will use a different
   namespace.

   Parameters containing a list of values are expressed using a list of
   elements in XML (e.g., the <type> element).

5.2. Limitations

The schema does not validate the cardinality of properties. This is a limitation of the schema definition language. Cardinalities of the original vCard format [RFC6350] MUST still be respected. Some constructs (e.g., value enumerations in type parameters) have additional ordering constraints in XML. This is a result of limitations of the schema definition language, and the order is arbitrary. The order MUST be respected in XML for the vCard to be valid. However, reordering as part of conversion to or from plain vCard MAY happen.
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6. Format Conversions

When new properties or "X-" properties are used, a vCard<->xCard converter might not recognize them or know what the appropriate default value types are, yet they need to be able to preserve the values. A similar issue arises for unrecognized property parameters. As a result, the following rules are applied when dealing with unrecognized properties and property parameters: o When converting from vCard to xCard: * Any property that does not include a "VALUE" parameter and whose default value type is not known MUST be converted using the value type XML element <unknown>. The content of that element is the unprocessed value text. * Any unrecognized property parameter MUST be converted using the value type XML element <unknown>, with its content set to the parameter value text, treated as if it were a text value, or list of text values. * The content of "XML" properties is copied as is to XML. * Property and parameter XML element names are converted to lower-case. * Property value escaping is undone. For example, "\n" becomes a NEWLINE character (ASCII decimal 10). * Double-quoting of parameter values, as well as backslash escaping in parameter values, is undone. For example, PARAM="\"foo\",\"bar\"" becomes <param>"foo","bar"</param>. o When converting xCard to vCard: * Properties in the vCard 4 namespace: + If the converter knows of a specific plain-text representation for this property, it uses it. For example, the <adr> element corresponds to the "ADR" property, which is encoded using comma-separated lists separated by semicolons. + Otherwise, the property name is taken from the element name, property parameters are taken from the <parameters> element, and the content of the property is taken from the content of the value element. If the property element has attributes or contains other XML elements, they are dropped.
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         +  If a standard property's XML element contains XML elements
            and attributes for which the converter doesn't recognize the
            expanded name, they are dropped.  Therefore, it is
            RECOMMENDED to limit extensions to the property level to
            ensure that all data is preserved intact in round-trip
            conversions.

      *  Properties in other namespaces are wrapped as is inside an
         "XML" property.

      *  Any <unknown> property value XML elements are converted
         directly into vCard values.  The containing property MUST NOT
         have a "VALUE" parameter.

      *  Any <unknown> parameter value XML elements are converted as if
         they were <text> value type XML elements.

      *  Property and parameter names are converted to upper-case.

      *  Property value escaping (Section 3.3 of [RFC6350]) is carried
         out.  For example, a NEWLINE character (ASCII decimal 10)
         becomes "\n".

      *  Double-quoting of parameter values, as well as backslash
         escaping in parameter values, is carried out.  For example,
         <param>"foo","bar"</param> becomes PARAM="\"foo\",\"bar\"".
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   For example, these two vCards are equivalent:

     <?xml version="1.0"?>
     <vcards xmlns="urn:ietf:params:xml:ns:vcard-4.0">
       <vcard>
         <fn><text>J. Doe</text></fn>
         <n>
           <surname>Doe</surname>
           <given>J.</given>
           <additional/>
           <prefix/>
           <suffix/>
         </n>
         <x-file>
           <parameters>
             <mediatype><text>image/jpeg</text></mediatype>
           </parameters>
           <unknown>alien.jpg</unknown>
         </x-file>
         <a xmlns="http://www.w3.org/1999/xhtml"
            href="http://www.example.com">My web page!</a>
       </vcard>
     </vcards>


     BEGIN:VCARD
     VERSION:4.0
     FN:J. Doe
     N:Doe;J.;;
     X-FILE;MEDIATYPE=image/jpeg:alien.jpg
     XML:<a xmlns="http://www.w3.org/1999/xhtml"\n
         href="http://www.example.com">My web page!</a>
     END:VCARD

7. Security Considerations

All the security considerations applicable to plain vCard [RFC6350] are applicable to this document as well. XML Signature [W3C.CR-xmldsig-core1-20110303] and XML Encryption [W3C.CR-xmlenc-core1-20110303] can be used with xCard to provide authentication and confidentiality.
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8. IANA Considerations

8.1. Registration of the XML Namespace

URI: urn:ietf:params:xml:ns:vcard-4.0 Registrant Contact: The IESG <iesg@ietf.org> XML: None. Namespace URIs do not represent an XML specification.

8.2. Media Type

This section defines the MIME media type [RFC4288] for use with vCard-in-XML data. To: ietf-types@iana.org Subject: Registration of media type application/vcard+xml Type name: application Subtype name: vcard+xml Required parameters: none Optional parameters: charset as defined for application/xml in [RFC3023]; per [RFC3023], use of the charset parameter with the value "utf-8" is "STRONGLY RECOMMENDED". Encoding considerations: Same as encoding considerations of application/xml as specified in [RFC3023]. Security considerations: This media type has all of the security considerations described in [RFC3023], plus those listed in Section 7. Interoperability considerations: This media type provides an alternative syntax to vCard data [RFC6350] based on XML. Published specification: This specification. Applications that use this media type: Applications that currently make use of the text/vcard media type can use this as an alternative. In general, applications that maintain or process contact information can use this media type.
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   Additional information:

      Magic number(s):  none

      File extension(s):  XML data should use ".xml" as the file
         extension.

      Macintosh file type code(s):  none

   Person & email address to contact for further information:  Simon
      Perreault <simon.perreault@viagenie.ca>

   Intended usage:  COMMON

   Restrictions on usage:  none

   Author:  Simon Perreault

   Change controller:  IETF

9. Acknowledgments

Thanks to the following people for their input: Alexey Melnikov, Barry Leiba, Bjorn Hoehrmann, Cyrus Daboo, Joe Hildebrand, Joseph Smarr, Marc Blanchet, Mike Douglass, Peter Saint- Andre, Robins George, Zahhar Kirillov, Zoltan Ordogh.

10. References

10.1. Normative References

[ISO.19757-2.2008] International Organization for Standardization, "Information technology -- Document Schema Definition Language (DSDL) -- Part 2: Regular-grammar-based validation -- RELAX NG", ISO International Standard 19757-2, October 2008. [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC3023] Murata, M., St. Laurent, S., and D. Kohn, "XML Media Types", RFC 3023, January 2001. [RFC6350] Perreault, S., "vCard Format Specification", RFC 6350, August 2011.
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   [W3C.REC-xml-20081126]
              Paoli, J., Yergeau, F., Maler, E., Bray, T., and C.
              Sperberg-McQueen, "Extensible Markup Language (XML) 1.0
              (Fifth Edition)", World Wide Web Consortium
              Recommendation REC-xml-20081126, November 2008,
              <http://www.w3.org/TR/2008/REC-xml-20081126>.

   [W3C.REC-xml-names-20091208]
              Bray, T., Hollander, D., Layman, A., Tobin, R., and H.
              Thompson, "Namespaces in XML 1.0 (Third Edition)", World
              Wide Web Consortium Recommendation REC-xml-names-20091208,
              December 2009,
              <http://www.w3.org/TR/2009/REC-xml-names-20091208>.

10.2. Informative References

[RFC4288] Freed, N. and J. Klensin, "Media Type Specifications and Registration Procedures", BCP 13, RFC 4288, December 2005. [VCARD-DTD] Dawson, F., "The vCard v3.0 XML DTD", Work in Progress, June 1998. [W3C.CR-xmldsig-core1-20110303] Roessler, T., Solo, D., Yiu, K., Reagle, J., Hirsch, F., Eastlake, D., and M. Nystroem, "XML Signature Syntax and Processing Version 1.1", World Wide Web Consortium CR CR- xmldsig-core1-20110303, March 2011, <http://www.w3.org/TR/2011/CR-xmldsig-core1-20110303>. [W3C.CR-xmlenc-core1-20110303] Eastlake, D., Reagle, J., Roessler, T., and F. Hirsch, "XML Encryption Syntax and Processing Version 1.1", World Wide Web Consortium CR CR-xmlenc-core1-20110303, March 2011, <http://www.w3.org/TR/2011/CR-xmlenc-core1-20110303>.
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Appendix A. Relax NG Schema

default namespace = "urn:ietf:params:xml:ns:vcard-4.0" ### Section 3.3: vCard Format Specification # # 3.3 iana-token = xsd:string { pattern = "[a-zA-Z0-9-]+" } x-name = xsd:string { pattern = "x-[a-zA-Z0-9-]+" } ### Section 4: Value types # # 4.1 value-text = element text { text } value-text-list = value-text+ # 4.2 value-uri = element uri { xsd:anyURI } # 4.3.1 value-date = element date { xsd:string { pattern = "\d{8}|\d{4}-\d\d|--\d\d(\d\d)?|---\d\d" } } # 4.3.2 value-time = element time { xsd:string { pattern = "(\d\d(\d\d(\d\d)?)?|-\d\d(\d\d?)|--\d\d)" ~ "(Z|[+\-]\d\d(\d\d)?)?" } } # 4.3.3 value-date-time = element date-time { xsd:string { pattern = "(\d{8}|--\d{4}|---\d\d)T\d\d(\d\d(\d\d)?)?" ~ "(Z|[+\-]\d\d(\d\d)?)?" } } # 4.3.4 value-date-and-or-time = value-date | value-date-time | value-time # 4.3.5 value-timestamp = element timestamp { xsd:string { pattern = "\d{8}T\d{6}(Z|[+\-]\d\d(\d\d)?)?" } } # 4.4 value-boolean = element boolean { xsd:boolean }
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# 4.5
value-integer = element integer { xsd:integer }

# 4.6
value-float = element float { xsd:float }

# 4.7
value-utc-offset = element utc-offset {
    xsd:string { pattern = "[+\-]\d\d(\d\d)?" }
  }

# 4.8
value-language-tag = element language-tag {
    xsd:string { pattern = "([a-z]{2,3}((-[a-z]{3}){0,3})?|[a-z]{4,8})"
                         ~ "(-[a-z]{4})?(-([a-z]{2}|\d{3}))?"
                         ~ "(-([0-9a-z]{5,8}|\d[0-9a-z]{3}))*"
                         ~ "(-[0-9a-wyz](-[0-9a-z]{2,8})+)*"
                         ~ "(-x(-[0-9a-z]{1,8})+)?|x(-[0-9a-z]{1,8})+|"
                         ~ "[a-z]{1,3}(-[0-9a-z]{2,8}){1,2}" }
  }

### Section 5: Parameters
#
# 5.1
param-language = element language { value-language-tag }?

# 5.2
param-pref = element pref {
    element integer {
      xsd:integer { minInclusive = "1" maxInclusive = "100" }
    }
  }?

# 5.4
param-altid = element altid { value-text }?

# 5.5
param-pid = element pid {
    element text { xsd:string { pattern = "\d+(\.\d+)?" } }+
  }?

# 5.6
param-type = element type { element text { "work" | "home" }+ }?

# 5.7
param-mediatype = element mediatype { value-text }?
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# 5.8
param-calscale = element calscale { element text { "gregorian" } }?

# 5.9
param-sort-as = element sort-as { value-text+ }?

# 5.10
param-geo = element geo { value-uri }?

# 5.11
param-tz = element tz { value-text | value-uri }?

### Section 6: Properties
#
# 6.1.3
property-source = element source {
    element parameters { param-altid, param-pid, param-pref,
                         param-mediatype },
    value-uri
  }

# 6.1.4
property-kind = element kind {
    element text { "individual" | "group" | "org" | "location" |
                   x-name | iana-token }*
  }

# 6.2.1
property-fn = element fn {
    element parameters { param-language, param-altid, param-pid,
                         param-pref, param-type }?,
    value-text
  }

# 6.2.2
property-n = element n {
    element parameters { param-language, param-sort-as, param-altid }?,
    element surname { text }+,
    element given { text }+,
    element additional { text }+,
    element prefix { text }+,
    element suffix { text }+
  }
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# 6.2.3
property-nickname = element nickname {
    element parameters { param-language, param-altid, param-pid,
                         param-pref, param-type }?,
    value-text-list
  }

# 6.2.4
property-photo = element photo {
    element parameters { param-altid, param-pid, param-pref, param-type,
                         param-mediatype }?,
    value-uri
  }

# 6.2.5
property-bday = element bday {
    element parameters { param-altid, param-calscale }?,
    (value-date-and-or-time | value-text)
  }

# 6.2.6
property-anniversary = element anniversary {
    element parameters { param-altid, param-calscale }?,
    (value-date-and-or-time | value-text)
  }

# 6.2.7
property-gender = element gender {
    element sex { "" | "M" | "F" | "O" | "N" | "U" },
    element identity { text }?
  }

# 6.3.1
param-label = element label { value-text }?
property-adr = element adr {
    element parameters { param-language, param-altid, param-pid,
                         param-pref, param-type, param-geo, param-tz,
                         param-label }?,
    element pobox { text }+,
    element ext { text }+,
    element street { text }+,
    element locality { text }+,
    element region { text }+,
    element code { text }+,
    element country { text }+
  }
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# 6.4.1
property-tel = element tel {
    element parameters {
      param-altid,
      param-pid,
      param-pref,
      element type {
        element text { "work" | "home" | "text" | "voice"
                     | "fax" | "cell" | "video" | "pager"
                     | "textphone" }+
      }?,
      param-mediatype
    }?,
    (value-text | value-uri)
  }

# 6.4.2
property-email = element email {
    element parameters { param-altid, param-pid, param-pref,
                         param-type }?,
    value-text
  }

# 6.4.3
property-impp = element impp {
    element parameters { param-altid, param-pid, param-pref,
                         param-type, param-mediatype }?,
    value-uri
  }

# 6.4.4
property-lang = element lang {
    element parameters { param-altid, param-pid, param-pref,
                         param-type }?,
    value-language-tag
  }

# 6.5.1
property-tz = element tz {
    element parameters { param-altid, param-pid, param-pref,
                         param-type, param-mediatype }?,
    (value-text | value-uri | value-utc-offset)
  }
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# 6.5.2
property-geo = element geo {
    element parameters { param-altid, param-pid, param-pref,
                         param-type, param-mediatype }?,
    value-uri
  }

# 6.6.1
property-title = element title {
    element parameters { param-language, param-altid, param-pid,
                         param-pref, param-type }?,
    value-text
  }

# 6.6.2
property-role = element role {
    element parameters { param-language, param-altid, param-pid,
                         param-pref, param-type }?,
    value-text
  }

# 6.6.3
property-logo = element logo {
    element parameters { param-language, param-altid, param-pid,
                         param-pref, param-type, param-mediatype }?,
    value-uri
  }

# 6.6.4
property-org = element org {
    element parameters { param-language, param-altid, param-pid,
                         param-pref, param-type, param-sort-as }?,
    value-text-list
  }

# 6.6.5
property-member = element member {
    element parameters { param-altid, param-pid, param-pref,
                         param-mediatype }?,
    value-uri
  }
Top   ToC   RFC6351 - Page 20
# 6.6.6
property-related = element related {
    element parameters {
      param-altid,
      param-pid,
      param-pref,
      element type {
        element text {
          "work" | "home" | "contact" | "acquaintance" |
          "friend" | "met" | "co-worker" | "colleague" | "co-resident" |
          "neighbor" | "child" | "parent" | "sibling" | "spouse" |
          "kin" | "muse" | "crush" | "date" | "sweetheart" | "me" |
          "agent" | "emergency"
        }+
      }?,
      param-mediatype
    }?,
    (value-uri | value-text)
  }

# 6.7.1
property-categories = element categories {
    element parameters { param-altid, param-pid, param-pref,
                         param-type }?,
    value-text-list
  }

# 6.7.2
property-note = element note {
    element parameters { param-language, param-altid, param-pid,
                         param-pref, param-type }?,
    value-text
  }

# 6.7.3
property-prodid = element prodid { value-text }

# 6.7.4
property-rev = element rev { value-timestamp }

# 6.7.5
property-sound = element sound {
    element parameters { param-language, param-altid, param-pid,
                         param-pref, param-type, param-mediatype }?,
    value-uri
  }
Top   ToC   RFC6351 - Page 21
# 6.7.6
property-uid = element uid { value-uri }

# 6.7.7
property-clientpidmap = element clientpidmap {
    element sourceid { xsd:positiveInteger },
    value-uri
  }

# 6.7.8
property-url = element url {
    element parameters { param-altid, param-pid, param-pref,
                         param-type, param-mediatype }?,
    value-uri
  }

# 6.8.1
property-key = element key {
    element parameters { param-altid, param-pid, param-pref,
                         param-type, param-mediatype }?,
    (value-uri | value-text)
  }

# 6.9.1
property-fburl = element fburl {
    element parameters { param-altid, param-pid, param-pref,
                         param-type, param-mediatype }?,
    value-uri
  }

# 6.9.2
property-caladruri = element caladruri {
    element parameters { param-altid, param-pid, param-pref,
                         param-type, param-mediatype }?,
    value-uri
  }

# 6.9.3
property-caluri = element caluri {
    element parameters { param-altid, param-pid, param-pref,
                         param-type, param-mediatype }?,
    value-uri
  }
Top   ToC   RFC6351 - Page 22
# Top-level grammar
property = property-adr | property-anniversary | property-bday
         | property-caladruri | property-caluri | property-categories
         | property-clientpidmap | property-email | property-fburl
         | property-fn | property-geo | property-impp | property-key
         | property-kind | property-lang | property-logo
         | property-member | property-n | property-nickname
         | property-note | property-org | property-photo
         | property-prodid | property-related | property-rev
         | property-role | property-gender | property-sound
         | property-source | property-tel | property-title
         | property-tz | property-uid | property-url
start = element vcards {
    element vcard {
      (property
       | element group {
           attribute name { text },
           property*
         })+
    }+
  }

Author's Address

Simon Perreault Viagenie 2600 boul. Laurier, Suite 625 Quebec, QC G1V 4W1 Canada Phone: +1 418 656 9254 EMail: simon.perreault@viagenie.ca URI: http://www.viagenie.ca