



                                                                J. Gould
                                                          VeriSign, Inc.
                                                       December 10, 2013


  Namestore Extension Mapping for the Extensible Provisioning Protocol
                                 (EPP)
                verisign_epp-extension_namestoreext_v01

Abstract

   This document describes an Extensible Provisioning Protocol (EPP)
   extension mapping for routing commands to a logical registry using a
   sub-product identifier.

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   exercise such rights without express permission, authority or license
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Conventions Used in This Document . . . . . . . . . . . .   2
   2.  Object Attributes . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Sub-Product Identifier  . . . . . . . . . . . . . . . . .   3
   3.  EPP Command Mapping . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  EPP Query Commands  . . . . . . . . . . . . . . . . . . .   3
       3.1.1.  EPP <check> Command . . . . . . . . . . . . . . . . .   3
       3.1.2.  EPP <info> Command  . . . . . . . . . . . . . . . . .   6
       3.1.3.  EPP <transfer> Command  . . . . . . . . . . . . . . .   6
     3.2.  EPP Transform Commands  . . . . . . . . . . . . . . . . .   6
       3.2.1.  EPP <create> Command  . . . . . . . . . . . . . . . .   7
       3.2.2.  EPP <delete> Command  . . . . . . . . . . . . . . . .   7
       3.2.3.  EPP <renew> Command . . . . . . . . . . . . . . . . .   7
       3.2.4.  EPP <transfer> Command  . . . . . . . . . . . . . . .   7
       3.2.5.  EPP <update> Command  . . . . . . . . . . . . . . . .   7
   4.  Formal Syntax . . . . . . . . . . . . . . . . . . . . . . . .   7
     4.1.  Namestore Extension Schema  . . . . . . . . . . . . . . .   7
   5.  Change History  . . . . . . . . . . . . . . . . . . . . . . .   9
     5.1.  Version 01  . . . . . . . . . . . . . . . . . . . . . . .   9
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   7.  Normative References  . . . . . . . . . . . . . . . . . . . .   9
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   This document describes an extension mapping for version 1.0 of the
   Extensible Provisioning Protocol (EPP) [RFC5730].  This EPP extension
   mapping enables a client to specify the logical target registry of
   the EPP command using a sub-product identifier (Section 2.1).  An EPP
   server can host multiple logical registries, where the client MUST
   route commands to the desired target logical registry.

1.1.  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 RFC 2119 [RFC2119].

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




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   In examples, "C:" represents lines sent by a protocol client and "S:"
   represents lines returned by a protocol server.  Indentation and
   white space in examples are provided only to illustrate element
   relationships and are not a REQUIRED feature of this protocol.

   "namestoreExt-1.1" is used as an abbreviation for
   "http://www.verisign-grs.com/epp/namestoreExt-1.1".  The XML
   namespace prefix "namestoreExt" 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.

2.  Object Attributes

   This extension adds additional elements to the EPP object mappings,
   like the EPP domain name mapping [RFC5731].  The use of the EPP
   domain name mapping [RFC5731] throughout the document is used
   strictly as an example since the Namestore Extension MAY be used with
   any EPP object mapping.  Only those new elements are described here.

2.1.  Sub-Product Identifier

   The sub-product identifier is used to identify the target logical
   registry that the EPP command is intended for.  The valid set of sub-
   product identifiers is up to server policy.  The server MUST validate
   the sub-product identifier and route the EPP command to the logical
   registry that matches the sub-product identifier.

3.  EPP Command Mapping

   A detailed description of the EPP syntax and semantics can be found
   in the EPP core protocol specification [RFC5730].  The command
   mappings described here are specifically for use with the Namestore
   Extension.

3.1.  EPP Query Commands

   EPP provides three commands to retrieve object information: <check>
   to determine if an object is known to the server, <info> to retrieve
   detailed information associated with an object, and <transfer> to
   retrieve object transfer status information.

3.1.1.  EPP <check> Command

   This extension defines additional elements to extend the EPP <check>
   command and response to be used in conjunction with the EPP object
   mappings, like the EPP domain name mapping [RFC5731].





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   The EPP <check> command is extended to include target logical
   registry.  In addition to the EPP command elements defined in the EPP
   object mappings, like the EPP domain name mapping [RFC5731], the
   command MUST contain the <extension> element.  The <extension>
   element MUST contain a child <namestoreExt:namestoreExt> element that
   contains the following child elements:

   <namestoreExt:subProduct>  element MUST contain a sub-product
       identifier specifying the target logical registry.

   Example <check> command with the Namestore Extension:

   C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   C:  <command>
   C:    <check>
   C:      <domain:check
   C:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
   C:        <domain:name>EXAMPLE1.TLD</domain:name>
   C:        <domain:name>EXAMPLE2.TLD</domain:name>
   C:        <domain:name>EXAMPLE3.TLD</domain:name>
   C:      </domain:check>
   C:    </check>
   C:    <extension>
   C:      <namestoreExt:namestoreExt
   C:       xmlns:namestoreExt=
   C:       "http://www.verisign-grs.com/epp/namestoreExt-1.1">
   C:         <namestoreExt:subProduct>TLD</namestoreExt:subProduct>
   C:      </namestoreExt:namestoreExt>
   C:    </extension>
   C:    <clTRID>ABC-12345</clTRID>
   C:  </command>
   C:</epp>

   When a <check> command has been successfully processed, the response
   MUST contain the elements defined in the EPP object mapping.  In
   addition, the EPP <extension> element MUST contain a child
   <namestoreExt:namestoreExt> element that contains the same
   <namestoreExt:subProduct> element that was passed in the <check>
   command.











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   Example <check> response with the Namestore Extension:

   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:chkData
   S:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
   S:        <domain:cd>
   S:          <domain:name avail="1">EXAMPLE1.TLD</domain:name>
   S:        </domain:cd>
   S:        <domain:cd>
   S:          <domain:name avail="0">EXAMPLE2.TLD</domain:name>
   S:          <domain:reason>In use</domain:reason>
   S:        </domain:cd>
   S:        <domain:cd>
   S:          <domain:name avail="1">EXAMPLE3.TLD</domain:name>
   S:        </domain:cd>
   S:      </domain:chkData>
   S:    </resData>
   S:    <extension>
   S:      <namestoreExt:namestoreExt
   S:       xmlns:namestoreExt=
   S:       "http://www.verisign-grs.com/epp/namestoreExt-1.1">
   S:         <namestoreExt:subProduct>TLD</namestoreExt:subProduct>
   S:      </namestoreExt:namestoreExt>
   S:    </extension>
   S:    <trID>
   S:      <clTRID>ABC-12345</clTRID>
   S:      <svTRID>54321-XYZ</svTRID>
   S:    </trID>
   S:  </response>
   S:</epp>

   When a <check> command has failed, the response MUST contain the
   elements defined in the EPP object mapping.  In addition, if the
   command response code is 2306 "Parameter value policy error", the EPP
   <extension> element MAY have a child <nsExtErrData> element that
   contains the following child elements:

   <namestoreExt:msg>  element MUST containing a human-readable
       description of the error.  The error code of the error MUST be
       identified with a "code" attribute.  The language of the error is
       identified via an OPTIONAL "lang" attribute.  If not specified,
       the default attribute value MUST be "en" (English).  The "code"



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       value of "1" with the error text "Invalid sub-product" indicates
       that the server does not support the specified sub-product
       identifier.

   Example <check> error response with the Namestore Extension:

   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="2306">
   S:      <msg>Parameter value policy error</msg>
   S:    </result>
   S:    <extension>
   S:      <namestoreExt:nsExtErrData
   S:        xmlns:namestoreExt=
   S:        "http://www.verisign-grs.com/epp/namestoreExt-1.1">
   S:        <namestoreExt:msg code="1">
   S:          Invalid sub-product
   S:        </namestoreExt:msg>
   S:      </namestoreExt:dstErrData>
   S:    </extension>
   S:    <trID>
   S:      <clTRID>ABC-12345</clTRID>
   S:      <svTRID>54321-XYZ</svTRID>
   S:    </trID>
   S:  </response>
   S:</epp>

3.1.2.  EPP <info> Command

   This extension defines additional elements to extend the EPP <info>
   command and response in the same fashion as defined for the EPP
   <check> Command (Section 3.1.1).

3.1.3.  EPP <transfer> Command

   This extension defines additional elements to extend the EPP
   <transfer> command and response in the same fashion as defined for
   the EPP <check> Command (Section 3.1.1).

3.2.  EPP Transform Commands

   EPP provides five commands to transform objects: <create> to create
   an instance of an object, <delete> to delete an instance of an
   object, <renew> to extend the validity period of an object,
   <transfer> to manage object sponsorship changes, and <update> to
   change information associated with an object.




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3.2.1.  EPP <create> Command

   This extension defines additional elements to extend the EPP <create>
   command and response in the same fashion as defined for the EPP
   <check> Command (Section 3.1.1).

3.2.2.  EPP <delete> Command

   This extension defines additional elements to extend the EPP <delete>
   command and response in the same fashion as defined for the EPP
   <check> Command (Section 3.1.1).

3.2.3.  EPP <renew> Command

   This extension defines additional elements to extend the EPP <renew>
   command and response in the same fashion as defined for the EPP
   <check> Command (Section 3.1.1).

3.2.4.  EPP <transfer> Command

   This extension defines additional elements to extend the EPP
   <transfer> command and response in the same fashion as defined for
   the EPP <check> Command (Section 3.1.1).

3.2.5.  EPP <update> Command

   This extension defines additional elements to extend the EPP <update>
   command and response in the same fashion as defined for the EPP
   <check> Command (Section 3.1.1).

4.  Formal Syntax

   One schema is presented here that is the EPP Namestore Extension
   schema.

   The formal syntax presented here is a complete schema representation
   of the object mapping suitable for automated validation of EPP XML
   instances.  The BEGIN and END tags are not part of the schema; they
   are used to note the beginning and ending of the schema for URI
   registration purposes.

4.1.  Namestore Extension Schema

   BEGIN
   <?xml version="1.0" encoding="UTF-8"?>
   <schema targetNamespace=
      "http://www.verisign-grs.com/epp/namestoreExt-1.1"
      xmlns="http://www.w3.org/2001/XMLSchema"



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      xmlns:namestoreExt=
        "http://www.verisign-grs.com/epp/namestoreExt-1.1"
      elementFormDefault="qualified">
     <annotation>
       <documentation>
         Extensible Provisioning Protocol v1.0 Namestore
         extension schema for destination registry routing.
        </documentation>
     </annotation>
     <!-- General Data types. -->
     <simpleType name="subProductType">
       <restriction base="token">
         <minLength value="1"/>
         <maxLength value="64"/>
       </restriction>
     </simpleType>
     <complexType name="extAnyType">
       <sequence>
         <any namespace="##other" maxOccurs="unbounded"/>
       </sequence>
     </complexType>
     <!-- Child elements found in EPP commands and responses. -->
     <element name="namestoreExt"
       type="namestoreExt:namestoreExtType"/>
     <!-- Child elements of the <product> command. -->
     <complexType name="namestoreExtType">
       <sequence>
         <element name="subProduct"
           type="namestoreExt:subProductType"/>
       </sequence>
     </complexType>
     <!-- Child response elements. -->
     <element name="nsExtErrData"
       type="namestoreExt:nsExtErrDataType"/>

     <!-- <prdErrData> error response elements. -->
     <complexType name="nsExtErrDataType">
       <sequence>
         <element name="msg" type="namestoreExt:msgType"/>
       </sequence>
     </complexType>
     <!-- <prdErrData> <msg> element. -->
     <complexType name="msgType">
       <simpleContent>
         <extension base="normalizedString">
               <attribute name="code"
                 type="namestoreExt:prdErrCodeType"
               use="required"/>



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           <attribute name="lang" type="language"
             default="en"/>
         </extension>
       </simpleContent>
     </complexType>
     <!-- <prdErrData> error response codes. -->
     <simpleType name="prdErrCodeType">
       <restriction base="unsignedShort">
         <enumeration value="1"/>
       </restriction>
     </simpleType>
   <!-- End of schema. -->
   </schema>
   END

5.  Change History

5.1.  Version 01

   1.  Initial version of Internet-Draft format of the EPP Namestore
       Extension, version 1.2.

6.  Security Considerations

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

7.  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.

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

Author's Address










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   James Gould
   VeriSign, Inc.
   12061 Bluemont Way
   Reston, VA  20190
   US

   Email: jgould@verisign.com
   URI:   http://www.verisigninc.com











































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