



Internet Engineering Task Force                                F. Obispo
Internet-Draft                                                  L. Munoz
Intended status: Experimental                                Uniregistry
Expires: July 31, 2014                                  January 27, 2014


   Internationalized Domain Name Mapping Extension for the Extensible
                      Provisioning Protocol (EPP)
                      draft-ietf-eppext-idnmap-01

Abstract

   This document describes an Extensible Provisioning Protocol (EPP)
   extension mapping for the provisioning of Internationalized Domain
   Names (IDN) stored in a shared central repository.  This mapping
   extends the EPP domain name mapping to provide additional features
   required to implement registrations of domain names in characters
   sets other than ASCII.

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 July 31, 2014.

Copyright Notice

   Copyright (c) 2014 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
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   include Simplified BSD License text as described in Section 4.e of



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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions Used in This Document . . . . . . . . . . . . . .   3
   3.  EPP Command Mapping . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  EPP Query Commands  . . . . . . . . . . . . . . . . . . .   3
       3.1.1.  EPP <info> Command  . . . . . . . . . . . . . . . . .   3
     3.2.  EPP Transform Commands  . . . . . . . . . . . . . . . . .   6
       3.2.1.  EPP <create> Command  . . . . . . . . . . . . . . . .   6
     3.3.  Formal Syntax . . . . . . . . . . . . . . . . . . . . . .   7
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     6.2.  Informational References  . . . . . . . . . . . . . . . .   9
     6.3.  URIs  . . . . . . . . . . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   The EPP protocol provides a complete description of EPP command and
   response structures.  A thorough understanding of the base protocol
   specification is necessary to understand the mapping described in
   this document.

   This document is written in consideration with the Guidelines for
   Extending the Extensible Provisioning Protocol as defined in
   [RFC3735].

   To comply with the Guidelines for the Implementation of
   Internationalized Domain Names [1], it is required to associate each
   label to be registered with a single script, as defined by the code
   division of the Unicode code chart.  This requirement imposes a
   challenge for registries using the EPP protocol, since there is no
   such field currently in the domain name mapping to allow for this
   information to be exchanged.

   In addition, registries intending to comply with the recommendation
   of section 4.1 [RFC5891] of the IDNA2008 protocol, which implies the
   verification of both the name in ASCII Compatible Encoding and
   Unicode form, will be able to do so using this extension.

   This extension adds two additional data element to the EPP Domain
   Name mapping, to allow for association of a domain name to an IDN




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   table identifier, and a the domain name in Unicode Normalization Form
   C (NFC [2]).

2.  Conventions 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].

   XML is case sensitive.  Unless stated otherwise, XML specifications
   and examples provided in this document MUST be interpreted in the
   character case representation presented in order to develop a
   conforming specification.

   "idn-1.0" is used as an abbreviation for
   "urn:ietf:params:xml:ns:idn-1.0".  The XML namespace prefix "idn" is
   used, but implementations MUST NOT depend on it and instead employ a
   proper namespace-aware XML parser and serializer to interpret and
   output the XML documents.

3.  EPP Command Mapping

   A detailed description of the EPP syntax and semantics can be found
   in [RFC5730].

3.1.  EPP Query Commands

   This extension does not add any elements to the EPP <check>, <poll>,
   or <transfer> commands or responses.

3.1.1.  EPP <info> Command

   This extension does not add any elements to the EPP <info> command,
   but does include elements in the response, when the extension has
   been selected during a <login> command.

   Example <info> command:














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   C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   C:  <command>
   C:    <info>
   C:      <domain:info
   C:          xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
   C:        <domain:name>xn--espaol-zwa.example.com</domain:name>
   C:        <domain:authInfo>
   C:          <domain:pw>2fooBAR</domain:pw>
   C:        </domain:authInfo>
   C:      </domain:info>
   C:    </info>
   C:    <clTRID>ABC-12345</clTRID>
   C:  </command>
   C:</epp>

   When the info command has been processed successfully, and the domain
   name is an IDN, the server must include in the <extension> section of
   the EPP response an <idn:data> element with the following elements:

   o  A <idn:table> element that contains the IDN table identifier.

   o  A <idn:uname> element that contains the domain name in Unicode NFC
      form.

   Example <info> response for an authorized client:

























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   S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   S:  <response>
   S:    <result code="1000">
   S:      <msg>Command completed successfully</msg>
   S:    </result>
   S:    <resData>
   S:      <domain:infData
   S:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
   S:        <domain:name>xn--espaol-zwa.example.com</domain:name>
   S:        <domain:roid>EXAMPLE1-REP</domain:roid>
   S:        <domain:status s="ok"/>
   S:        <domain:registrant>jd1234</domain:registrant>
   S:        <domain:contact type="admin">sh8013</domain:contact>
   S:        <domain:contact type="tech">sh8013</domain:contact>
   S:        <domain:ns>
   S:          <domain:hostObj>ns1.example.com</domain:hostObj>
   S:          <domain:hostObj>ns1.example.net</domain:hostObj>
   S:        </domain:ns>
   S:        <domain:clID>ClientX</domain:clID>
   S:        <domain:crID>ClientY</domain:crID>
   S:        <domain:crDate>1999-04-03T22:00:00.0Z</domain:crDate>
   S:        <domain:upID>ClientX</domain:upID>
   S:        <domain:upDate>1999-12-03T09:00:00.0Z</domain:upDate>
   S:        <domain:exDate>2005-04-03T22:00:00.0Z</domain:exDate>
   S:        <domain:trDate>2000-04-08T09:00:00.0Z</domain:trDate>
   S:        <domain:authInfo>
   S:          <domain:pw>2fooBAR</domain:pw>
   S:        </domain:authInfo>
   S:      </domain:infData>
   S:    </resData>
   S:    <extension>
   S:      <idn:data xmlns:idn="urn:ietf:params:xml:ns:idn-1.0">
   S:        <idn:table>es</idn:table>
   S:        <idn:uname>espa&#xF1;ol.example.com</idn:uname>
   S:      </idn:data>
   S:    </extension>
   S:    <trID>
   S:      <clTRID>ABC-12345</clTRID>
   S:      <svTRID>54322-XYZ</svTRID>
   S:    </trID>
   S:  </response>
   S:</epp>








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3.2.  EPP Transform Commands

   This extension does not add any elements to the EPP <delete>,
   <renew>, or <transfer> commands or responses.

3.2.1.  EPP <create> Command

   This extension defines additional elements for the EPP <create>
   command.

   If the domain name is an IDN, the EPP command MUST contain an
   <extension> element, which MUST contain a child <idn:data> element
   with the following child elements:

   o  A <idn:table> element that contains the IDN table identifier as
      provided by the server.

   o  An optional <idn:uname> element that contains the domain name to
      be registered in Unicode NFC.

   Example <create> command:






























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   C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   C: <command>
   C:   <create>
   C:     <domain:create
   C:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
   C:     <domain:name>xn--espaol-zwa.example.com</domain:name>
   C:     <domain:period unit="y">2</domain:period>
   C:     <domain:ns>
   C:       <domain:hostObj>ns1.example.net</domain:hostObj>
   C:       <domain:hostObj>ns2.example.net</domain:hostObj>
   C:     </domain:ns>
   C:     <domain:registrant>jd1234</domain:registrant>
   C:     <domain:contact type="admin">sh8013</domain:contact>
   C:     <domain:contact type="tech">sh8013</domain:contact>
   C:     <domain:authInfo>
   C:       <domain:pw>2fooBAR</domain:pw>
   C:     </domain:authInfo>
   C:     </domain:create>
   C:   </create>
   C:   <extension>
   C:   <idn:data xmlns:idn="urn:ietf:params:xml:ns:idn-1.0">
   C:     <idn:table>es</idn:table>
   C:     <idn:uname>espa&#xF1;ol.example.com</idn:uname>
   C:   </idn:data>
   C:   </extension>
   C:   <clTRID>123456</clTRID>
   C: </command>
   C:</epp>

   The server MUST validate the name using the procedure described in
   section 4.2 of [RFC5891].

   If the validation of the IDN name failed because it contained a code
   point not available in the specified IDN table, the server MUST
   return an EPP error 2306.

   In the specific case that the <domain:name> provided did not map to
   the provided <idn:uname>, the server MUST respond with an EPP error
   2005.

3.3.  Formal Syntax

   An EPP object mapping is specified in XML Schema notation.  The
   formal syntax presented here is a complete schema representation of
   the object mapping suitable for automated validation of EPP XML
   instances.




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   <?xml version="1.0" encoding="UTF-8"?>
   <schema xmlns="http://www.w3.org/2001/XMLSchema"
           xmlns:eppcom="urn:ietf:params:xml:ns:eppcom-1.0"
           xmlns:idn="urn:ietf:params:xml:ns:idn-1.0"
           targetNamespace="urn:ietf:params:xml:ns:idn-1.0"
           elementFormDefault="qualified">
     <annotation>
       <documentation>
         Extensible Provisioning Protocol v1.0 domain name extension
         schema for IDN Table selection.
       </documentation>
     </annotation>
     <import namespace="urn:ietf:params:xml:ns:eppcom-1.0"
             schemaLocation="eppcom-1.0.xsd"/>
     <!-- Child elements found in IDN -->
       <element name="data" type="idn:idnDataType"/>
         <complexType name="idnDataType">
           <sequence>
             <element name="table" type="eppcom:minTokenType"/>
             <element name="uname" type="eppcom:labelType"
                 minOccurs="0"/>
           </sequence>
         </complexType>
     <!-- End of schema. -->
   </schema>

4.  IANA Considerations

   This document uses URNs to describe XML namespaces and XML schemas
   conforming to a registry mechanism described in [RFC3688].  Two URI
   assignments have been registered by the IANA.

   Registration request for the contact namespace:

   URI: urn:ietf:params:xml:ns:idn-1.0

   Registrant Contact: See the "Author's Address" section of this
   document.

   XML: None.  Namespace URIs do not represent an XML specification.

   Registration request for the contact XML schema:

   URI: urn:ietf:params:xml:schema:idn-1.0

   Registrant Contact: See the "Author's Address" section of this
   document.




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   XML: See the "Formal Syntax" section of this document.

5.  Security Considerations

   The mapping extensions described in this document do not provide any
   security services beyond those described by EPP [RFC5730] the EPP
   domain name mapping [RFC5731], and protocol layers used by EPP.  The
   security considerations described in these other specifications apply
   to this specification as well.

6.  References

6.1.  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC5730]  Hollenbeck, S., "Extensible Provisioning Protocol (EPP)",
              STD 69, RFC 5730, August 2009.

   [RFC5891]  Klensin, J., "Internationalized Domain Names in
              Applications (IDNA): Protocol", RFC 5891, August 2010.

6.2.  Informational References

   [RFC3735]  Hollenbeck, S., "Guidelines for Extending the Extensible
              Provisioning Protocol (EPP)", RFC 3735, March 2004.

   [RFC5731]  Hollenbeck, S., "Extensible Provisioning Protocol (EPP)
              Domain Name Mapping", STD 69, RFC 5731, August 2009.

6.3.  URIs

   [1] http://www.icann.org/en/topics/idn/idn-guidelines-26apr07.pdf

   [2] http://www.unicode.org/reports/tr15/

Authors' Addresses

   Francisco Obispo
   Uniregistry Corp.
   3-110 Governors Square
   Grand Cayman, Grand Cayman  KY1-1108
   KY

   Phone: +194990334499
   Email: fobispo@uniregistry.com
   URI:   http://www.uniregistry.com/



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   Luis Enrique Munoz
   Uniregistry Corp.
   3-110 Governors Square
   Grand Cayman, Grand Cayman  KY1-1108
   KY

   Phone: +19499034226
   Email: fobispo@uniregistry.com
   URI:   http://www.uniregistry.com/










































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