Internet-Draft Using JSContact in RDAP December 2023
Loffredo & Brown Expires 9 June 2024 [Page]
Workgroup:
Registration Protocols Extensions
Internet-Draft:
draft-ietf-regext-rdap-jscontact-17
Published:
Intended Status:
Standards Track
Expires:
Authors:
M. Loffredo
IIT-CNR/Registro.it
G. Brown
CentralNic Group plc

Using JSContact in Registration Data Access Protocol (RDAP) JSON Responses

Abstract

This document describes an RDAP extension which represents entity contact information in JSON responses using JSContact.

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 Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet-Drafts is at https://datatracker.ietf.org/drafts/current/.

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."

This Internet-Draft will expire on 9 June 2024.

Table of Contents

1. Introduction

This document specifies an extension to the Registration Data Access Protocol (RDAP) that allows RDAP servers to use JSContact [I-D.ietf-calext-jscontact] to represent the contact information associated with entities in RDAP responses, instead of jCard [RFC7095]. It also describes the process by which an RDAP server can transition from jCard to JSContact. RDAP query and response extensions are defined to facilitate the transition process.

1.1. Rationale

According to the feedback from RDAP Pilot Working Group [RDAP-PILOT-WG], a group of RDAP server implementers representing registries and registrars of generic TLDs, the most commonly raised implementation concern, for both servers and client implementers, related to the use of jCard [RFC7095] to represent the contact information associated with entities. Working Group members reported jCard to be unintuitive, complicated to implement for both clients and servers, and incompatible with best practices for RESTful APIs.

JSContact [I-D.ietf-calext-jscontact] provides a simpler and more efficient representation for contact information with regard to time and effort saved in processing it. In addition, similarly to jCard, it provides a means to represent internationalised and unstructured contact information. Support for internationalised contact information has been recognised being necessary to facilitate the future internationalisation of registration data directory services.

1.2. Conventions Used in This Document

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all capitals, as shown here.

The JSContact specification declares the object type "Card" which represents a single contact card. To avoid confusion, in the following of this document, the term "JSCard" is used to refer to "JSContact Card".

2. JSContact

The JSContact specification defines a data model and JSON representation of contact information that can be used for data storage and exchange in address book or directory applications. It aims to be an alternative to the vCard data format [RFC6350] and to be unambiguous, extendable and simple to process. In contrast with jCard, it is not a direct mapping from the vCard data model and expands semantics where appropriate.

JSCard differs from jCard in that it:

[I-D.ietf-calext-jscontact-vcard] provides informational guidance on the conversion of jCard into JSCard, and vice versa. Appendix A shows JSContact counterparts for the most commonly used jCard properties in an RDAP response.

3. Using JSContact in RDAP Responses

3.1. Extension Identifier

Entity objects in RDAP responses MAY include a "jscard" property whose value is a JSCard object instead of the "vCardArray" property defined in [RFC9083].

Servers returning the "jscard" property in their response MUST include "jscard" in the "rdapConformance" array.

3.2. Version

The JSContact version to be used in RDAP MUST be "1.0".

3.3. Kind

The JSContact "kind" property value MUST be "individual" (default) or "org" to represent an individual or an organization, respectively.

3.4. Language

The JSContact "language" property SHOULD be set when localizations are specified (i.e. the "localizations" property is not null).

3.5. Map Keys

Since most of the JSCard collections are represented as maps, map keys must be defined. A JSContact map key MUST comply with the definition of the Id type. To aid interoperability, RDAP providers MUST use the following Id values related to string values and labels defined in [RFC5733]:

  • "org" in the "organizations" map when there is a single <contact:org> element. If both internationalised and localized forms exist, the key MUST be used for the internationalised form;

  • "addr" in the "addresses" map when there is a single <contact:addr> element. If both internationalised and localized forms exist, the key MUST be used for the internationalised form;

  • "email" in the "emails" map when there is a single <contact:email> element;

  • "voice" in the "phones" map for the <contact:voice> element;

  • "fax" in the "phones" map for the <contact:fax> element.

Additional keys of the "links" map that MUST be used to represent contact links which result from converting jCard "uri" and "contact-uri" properties are:

  • "url" used for the unique or preferred contact url (e.g. a web site). The "kind" property of the JSContact "Link" object MUST NOT be set;

  • "contact-uri" used for the contact uri as defined in [RFC8605]. The "kind" property of the JSContact "Link" object MUST be set to "contact".

The information needed to register the JSContact Id values in the "RDAP JSON Values" registry [RFC9083] is described in Section 6.2.

An unregistered Id value used for the aforementioned maps or others SHOULD comply with the following scheme: "<map name>-<sequential number>" (e.g. "addresses-1", "addresses-2").

3.6. Localizations

If present, the localized versions of name, organization and postal address MUST be added to the "localizations" map. With reference to the defintion of localization in [I-D.ietf-calext-jscontact], an RDAP response with JSContact content MUST expand all localizations (i.e. a patch key using the syntax "{key1}/{key2}/.../{keyN}" is not allowed). The following is an elided example of an RDAP entity lookup response including a JSCard object that presents a localized postal address (See PDF for non-ASCII character string).

...
"jscard": {
  "@type": "Card",
  "@version": "1.0",
  "uid": "7812cafe-336e-5969-988b-ad68f78ae90f",
  "language": "en",
  "name": {
    "full": "Vasya Pupkin"
  },
  "organizations": {
    "org": {
      "name": "My Company"
    }
  },
  "addresses": {
    "addr": {
      "components": [
        { "kind": "name", "value": "1 Street" },
        { "kind": "postOfficeBox", "value": "01001" },
        { "kind": "locality", "value": "Kyiv" }
      ],
      "countryCode": "UA"
    }
  },
  "localizations": {
    "ua": {
      "addresses": {
        "addr": {
          "components": [
           { "kind": "name", "value": "1, Улица" },
           { "kind": "postOfficeBox", "value": "01001" },
           { "kind": "locality", "value": "Киев" }
          ],
          "countryCode": "UA"
        }
      },
      "name": {
        "full": "Вася Пупкин"
      },
      "organizations": {
        "org": {
          "name": "Моя Компания"
        }
      }
    }
  }
}
...
Figure 1: Example of handling localizations in JSContact

3.7. Example of using JSContact in RDAP response

The following is an example of an RDAP entity including a JSCard object.

   {
      "rdapConformance": [
         "rdap_level_0",
         "jscard"
      ],
      "objectClassName": "entity",
      "handle":"XXXX",
      "jscard":{
        "@type": "Card",
        "@version": "1.0",
        "uid": "74b64df3-2d60-56b4-9df3-8594886f4456",
        "language": "en",
        "name": {
          "full": "Joe User",
          "components": [
            { "kind": "surname", "value": "User" },
            { "kind": "given", "value": "Joe" }
          ]
        },
        "organizations": {
          "org": {
            "name": "Example"
          }
        },
         "addresses": {
           "addr": {
             "components": [
               { "kind": "name", "value": "4321 Rue Somewhere" },
               { "kind": "extension", "value": "Suite 1234" },
               { "kind": "locality", "value": "Quebec" },
               { "kind": "region", "value": "QC" },
               { "kind": "postcode", "value": "G1V 2M2" },
               { "kind": "country", "value": "Canada" }
             ],
             "countryCode": "CA",
             "coordinates": "geo:46.772673,-71.282945"
           },
           "addresses-1": {
             "full": "123 Maple Ave Vancouver BC 1239"
             "contexts": { "private": true }
           }
         },
        "phones": {
          "voice": {
            "features": { "voice": true },
            "number": "tel:+1-555-555-1234"
          },
          "fax": {
            "features": { "fax": true },
            "number": "tel:+1-555-555-4321"
          }
        },
        "emails": {
          "email": {
            "address": "joe.user@example.com"
          }
        },
        "links": {
          "url": {
            "uri": "https://www.example.com"
          },
          "contact-uri": {
            "kind": "contact",
            "uri": "mailto:contact@example.com"
          }
        }
      },
      "roles":[ "registrar" ],
      "publicIds":[
        {
          "type":"IANA Registrar ID",
          "identifier":"1"
        }
      ],
      "links":[
        {
          "value":"https://example.com/entity/XXXX",
          "rel":"self",
          "href":"https://example.com/entity/XXXX",
          "type" : "application/rdap+json"
        }
      ],
      "events":[
        {
          "eventAction":"registration",
          "eventDate":"1990-12-31T23:59:59Z"
        }
      ],
      "asEventActor":[
        {
          "eventAction":"last changed",
          "eventDate":"1991-12-31T23:59:59Z"
        }
      ]
   }
Figure 2: Example of using JSContact in RDAP response

3.8. Query Parameters

One new query parameter is defined for the purpose of this document.

The parameter is an OPTIONAL extension of queries defined in [RFC9082] as well as any RDAP query described by a future document whose response includes contact information. It is as follows:

"jscard": a boolean value that allows a client to request the "jscard" property in the RDAP response;

This parameter is further explained in Section 4.2.2.2.

3.9. Reverse Search Properties

The use of JSContact updates the mappings of two reverse search properties, namely "fn" and "email", defined in [I-D.ietf-regext-rdap-reverse-search]. Such new mappings are registered in the Reverse Search Mapping registry as described in Section 6.3.

4. Transition Considerations

4.1. RDAP Features Supporting a Transition Process

RDAP allows servers to communicate service information to clients through notices. According to Section 4.3 of [RFC9083], an RDAP response may contain one or more notice objects. Each notice may include a set of link objects, which can be used to provide clients with references and documentation. These link objects may have a "rel" property which defines the relationship type, as described in [RFC8288], Section 4. The transition process outlined in this document uses two link relation types, namely "related" and "alternate", described in [RFC8288].

4.1.2. rdapConformance Property

The information about the specifications used in the construction of the response is also described by the strings which appear in the "rdapConformance" property of the RDAP response.

4.2. Transition Procedure

The principles of the procedure for jCard to JSCard transition are based on the best practices in [API-DEPRECATION].

The procedure consists of three contiguous stages. During the procedure, the presence of "jscard" tag in the rdapConformance array indicates that JSCard is returned instead of jCard. The date and time format used to notify clients about the stages of this procedure is defined in [RFC3339].

4.2.1. Goals

The procedure described in this document aims to achieve the following goals:

  • only one contact representation would be included in the response;

  • the response would always be compliant to [RFC9083] because:

    • being the "jscard" property a response extension, its presence would be signaled by the "jscard" conformance tag;

    • being "vcardArray" property optional in a response, its absence would be allowed;

  • clients would be informed about the transition timeline;

  • the backward compatibility would be guaranteed throughout the transition;

  • servers and clients could execute their transitions independently.

4.2.2. Transition Stages

4.2.2.1. Stage 1: only jCard provided

This stage corresponds to providing jCard as the default contact card [RFC9083]. The RDAP server is not able to provide an alternate format for the contact card. The rdapConformance array MUST NOT contain the "jscard" tag.

4.2.2.2. Stage 2: jCard sunset

During this stage, the server uses jCard by default, but the RDAP server will return JSCard if the client sets the query parameter "jscard" to 1/true/yes. The rdapConformance array MUST contain the "jscard" tag if JSCard is returned.

From this stage on, the RDAP server MUST include the "jscard" tag in the rdapConformance array of the help response to signal clients that JSCard can be returned instead of jCard.

If JSCard is not requested, the RDAP server SHOULD include a notice titled "jCard sunset end". Such a notice includes a description reporting the jCard sunset end date and time and two OPTIONAL links:

  • "related": a link to a URI-identified resource documenting the transition procedure;

  • "alternate": a link to an alternate result view identified by the current query string plus the parameter "jscard" set to 1/true/yes (Figure 3).

"notices": [
  {
    "title": "jCard sunset end",
    "description": ["2022-12-31T23:59:59Z"],
    "links": [{
        "value": "https://example.net/entity/XXXX",
        "rel": "related",
        "type": "text/html",
        "href": "https://www.example.com/jcard_deprecation.html"
      },
      {
        "value": "https://example.net/entity/XXXX",
        "rel": "alternate",
        "type": "application/rdap+json",
        "href": " https://example.net/entity/XXXX?jscard=1"
      }
    ]
  }
]
Figure 3: jCard sunset - JSCard not requested
4.2.2.3. Stage 3: jCard deprecation

This stage corresponds to providing JSCard as default contact card. The rdapConformance array always contains "jscard" tag. The RDAP server doesn't include any notice about the jCard deprecation process. The "jscard" query parameter MUST be ignored.

FOR DISCUSSION: should server signal the end of the transition by including the "jcard_deprecated" value in the rdapConformance array ? Would its usage be compliant with the rdapConformance definition in RFC 9083 ?

4.2.2.4. Length

The length of the jCard sunset period is not fixed by this specification. Best practices in REST API deprecation suggest that, depending on the deprecated API's reach, user base and service offering, a convenient time could be anywhere between 3 - 8 months. Anyway, RDAP providers are RECOMMENDED to monitor the server log to figure out whether the declared time need to be changed to meet client requirements.

5. Implementation Status

NOTE: Please remove this section and the reference to RFC 7942 prior to publication as an RFC.

This section records the status of known implementations of the protocol defined by this specification at the time of posting of this Internet-Draft, and is based on a proposal described in RFC 7942 [RFC7942]. The description of implementations in this section is intended to assist the IETF in its decision processes in progressing drafts to RFCs. Please note that the listing of any individual implementation here does not imply endorsement by the IETF. Furthermore, no effort has been spent to verify the information presented here that was supplied by IETF contributors. This is not intended as, and must not be construed to be, a catalog of available implementations or their features. Readers are advised to note that other implementations may exist.

According to RFC 7942, "this will allow reviewers and working groups to assign due consideration to documents that have the benefit of running code, which may serve as evidence of valuable experimentation and feedback that have made the implemented protocols more mature. It is up to the individual working groups to use this information as they see fit".

5.1. IIT-CNR/Registro.it RDAP Server

  • Responsible Organization: Institute of Informatics and Telematics of National Research Council (IIT-CNR)/Registro.it

  • Location: https://rdap.pubtest.nic.it/

  • Description: This implementation includes support for RDAP queries using data from the public test environment of .it ccTLD.

  • Level of Maturity: This is an "alpha" test implementation.

  • Coverage: This implementation includes all of the features described in this specification.

  • Contact Information: Mario Loffredo, mario.loffredo@iit.cnr.it

5.2. IIT-CNR/Registro.it RDAP Client

  • Responsible Organization: Institute of Informatics and Telematics of National Research Council (IIT-CNR)/Registro.it

  • Location: https://web-rdap.pubtest.nic.it/

  • Description: This is a Javascript web-based RDAP client. RDAP responses are retrieved from RDAP servers by the browser, parsed into an HTML representation, and displayed in a format improving the user experience. RDAP responses containing JSCard objects are handled identically to those containing jCard objects. Raw versions of RDAP responses including either jCard or JSCard objects are provided.

  • Level of Maturity: This is an "alpha" test implementation.

  • Coverage: This implementation includes all of the features described in this specification.

  • Contact Information: Francesco Donini, francesco.donini@iit.cnr.it

5.3. client.rdap.org

  • Location: https://client.rdap.org/

  • Description: This is a web-based "single page" RDAP client. RDAP responses are retrieved from RDAP servers by the browser, and parsed into an HTML representation. RDAP responses containing JSCard objects are handled identically to those containing jCard objects.

  • Level of Maturity: This is an "alpha" test implementation.

  • Coverage: This implementation implements client support for parsing JSCard objects in RDAP responses.

  • Contact Information: Gavin Brown, feedback@rdap.org

5.4. CentralNic Registry

  • Responsible Organization: CentralNic Group PLC

  • Location: https://rdap.centralnic.com/{tld}

  • Description: This server is the product RDAP service for all top-level domains on the CentralNic registry platform.

  • Level of Maturity: Production quality.

  • Coverage: This implementation includes all of the features described in this specification.

  • Contact Information: support@centralnic.com

6. IANA Considerations

6.1. RDAP Extensions Registry

IANA is requested to register the following values in the RDAP Extensions Registry:

  • Extension identifier: jscard

  • Registry operator: Any

  • Published specification: This document.

  • Contact: IETF <iesg@ietf.org>

  • Intended usage: This extension prefix identifier is used for the "jscard" member returned in the JSON response [I-D.ietf-calext-jscontact].

6.2. RDAP JSON Values Registry

With regard to the fields of the "RDAP JSON Values" registry [RFC9083], the "JSContact Id Value" type SHALL be used to register the RDAP values for the JSContact Id type as defined in Section 3.5.

IANA is requested to register the following values in the "RDAP JSON Values" registry:

Value:
org
Type:
JSContact Id Value
Description:
The key in the JSContact "organizations" map identifiying the contact organization.
Registrant Name:
IESG
Registrant Contact Information:
iesg@ietf.org
Reference:
This document
Value:
addr
Type:
JSContact Id Value
Description:
The key in the JSContact "addresses" map identifiying the unique or preferred contact postal address.
Registrant Name:
IESG
Registrant Contact Information:
iesg@ietf.org
Reference:
This document
Value:
email
Type:
JSContact Id Value
Description:
The key in the JSContact "emails" map identifiying the unique or preferred contact email address.
Registrant Name:
IESG
Registrant Contact Information:
iesg@ietf.org
Reference:
This document
Value:
voice
Type:
JSContact Id Value
Description:
The key in the JSContact "phones" map identifiying the unique or preferred contact voice number.
Registrant Name:
IESG
Registrant Contact Information:
iesg@ietf.org
Reference:
This document
Value:
fax
Type:
JSContact Id Value
Description:
The key in the JSContact "phones" map identifiying the unique or preferred contact fax number.
Registrant Name:
IESG
Registrant Contact Information:
iesg@ietf.org
Reference:
This document
Value:
url
Type:
JSContact Id Value
Description:
The key in the JSContact "links" map identifiying the unique or preferred url.
Registrant Name:
IESG
Registrant Contact Information:
iesg@ietf.org
Reference:
This document
Value:
contact-uri
Type:
JSContact Id Value
Description:
The key in the JSContact "links" map identifiying the contact uri as defined in [RFC8605].
Registrant Name:
IESG
Registrant Contact Information:
iesg@ietf.org
Reference:
This document

6.3. RDAP Reverse Search Mapping Registry

IANA is requested to register the following entries in the the "RDAP Reverse Search Mapping" registry [I-D.ietf-regext-rdap-reverse-search]:

Searchable Resource Type:
domains, nameservers, entities
Related Resource Type:
entity
Property:
fn
Property Path:
$.entities[*].jscard.[name.full,localizations.*.name.full]
Registrant Name:
IESG
Registrant Contact Information:
iesg@ietf.org
Reference:
This document
Searchable Resource Type:
domains, nameservers, entities
Related Resource Type:
entity
Property:
email
Property Path:
$.entities[*].jscard.emails.email.address
Registrant Name:
IESG
Registrant Contact Information:
iesg@ietf.org
Reference:
This document

7. Security Considerations

Unlike what happens for the "fn" property in jCard, the only mandatory property in JSContact, namely "uid", is not a sensitive information. Nevertheless, RDAP operators can redact it to prevent results from being correlated. Hence, with reference to what is described in [I-D.ietf-regext-rdap-redacted], a redaction method must be selected based on the "uid" format.

If "uid" is represented as a URN in the uuid namespace, the most appropriate choice is using the "Replacement Value" method along with the nil UUID as replacing value. If it is provided in the free-text format, the "Empty Value" method should be preferred. Otherwise, an URI value can be redacted by using any of the two methods above. For example, the URL of the RDAP entity corresponding to the contact (e.g. "https://example.com/rdap/entity/XYZ12345") can be redacted by replacing the entity handle with a fixed literal (e.g "https://example.com/rdap/entity/XXXXX").

8. Acknowledgements

The authors would like to acknowledge the following individuals for their contributions to this document: Jasdip Singh, Andrew Newton, Marc Blanchet, Rick Wilhelm and Francesco Donini.

9. References

9.1. Normative References

[I-D.ietf-calext-jscontact]
Stepanek, R. and M. Loffredo, "JSContact: A JSON representation of contact data", Work in Progress, Internet-Draft, draft-ietf-calext-jscontact-16, , <https://datatracker.ietf.org/doc/html/draft-ietf-calext-jscontact-16>.
[I-D.ietf-calext-jscontact-vcard]
Loffredo, M. and R. Stepanek, "JSContact: Converting from and to vCard", Work in Progress, Internet-Draft, draft-ietf-calext-jscontact-vcard-14, , <https://datatracker.ietf.org/doc/html/draft-ietf-calext-jscontact-vcard-14>.
Loffredo, M. and M. Martinelli, "Registration Data Access Protocol (RDAP) Reverse Search", Work in Progress, Internet-Draft, draft-ietf-regext-rdap-reverse-search-26, , <https://datatracker.ietf.org/doc/html/draft-ietf-regext-rdap-reverse-search-26>.
[RFC2119]
Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, , <https://www.rfc-editor.org/info/rfc2119>.
[RFC3339]
Klyne, G. and C. Newman, "Date and Time on the Internet: Timestamps", RFC 3339, DOI 10.17487/RFC3339, , <https://www.rfc-editor.org/info/rfc3339>.
[RFC5733]
Hollenbeck, S., "Extensible Provisioning Protocol (EPP) Contact Mapping", STD 69, RFC 5733, DOI 10.17487/RFC5733, , <https://www.rfc-editor.org/info/rfc5733>.
[RFC6350]
Perreault, S., "vCard Format Specification", RFC 6350, DOI 10.17487/RFC6350, , <https://www.rfc-editor.org/info/rfc6350>.
[RFC7095]
Kewisch, P., "jCard: The JSON Format for vCard", RFC 7095, DOI 10.17487/RFC7095, , <https://www.rfc-editor.org/info/rfc7095>.
[RFC7942]
Sheffer, Y. and A. Farrel, "Improving Awareness of Running Code: The Implementation Status Section", BCP 205, RFC 7942, DOI 10.17487/RFC7942, , <https://www.rfc-editor.org/info/rfc7942>.
[RFC8174]
Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174, , <https://www.rfc-editor.org/info/rfc8174>.
[RFC8288]
Nottingham, M., "Web Linking", RFC 8288, DOI 10.17487/RFC8288, , <https://www.rfc-editor.org/info/rfc8288>.
[RFC9082]
Hollenbeck, S. and A. Newton, "Registration Data Access Protocol (RDAP) Query Format", STD 95, RFC 9082, DOI 10.17487/RFC9082, , <https://www.rfc-editor.org/info/rfc9082>.
[RFC9083]
Hollenbeck, S. and A. Newton, "JSON Responses for the Registration Data Access Protocol (RDAP)", STD 95, RFC 9083, DOI 10.17487/RFC9083, , <https://www.rfc-editor.org/info/rfc9083>.

9.2. Informative References

[API-DEPRECATION]
Sandoval, K., "How to Smartly Sunset and Deprecate APIs", , <https://web.archive.org/web/20200417084255/https://nordicapis.com/how-to-smartly-sunset-and-deprecate-apis/>.
[I-D.ietf-jsonpath-base]
Gössner, S., Normington, G., and C. Bormann, "JSONPath: Query expressions for JSON", Work in Progress, Internet-Draft, draft-ietf-jsonpath-base-21, , <https://datatracker.ietf.org/doc/html/draft-ietf-jsonpath-base-21>.
[I-D.ietf-regext-rdap-redacted]
Gould, J., Smith, D., Kolker, J., and R. Carney, "Redacted Fields in the Registration Data Access Protocol (RDAP) Response", Work in Progress, Internet-Draft, draft-ietf-regext-rdap-redacted-16, , <https://datatracker.ietf.org/doc/html/draft-ietf-regext-rdap-redacted-16>.
[RDAP-PILOT-WG]
ICANN RDAP Pilot WG, "RDAP Pilot Report", , <https://www.icann.org/en/system/files/files/rdap-pilot-report-25apr19-en.pdf>.
[RFC8605]
Hollenbeck, S. and R. Carney, "vCard Format Extensions: ICANN Extensions for the Registration Data Access Protocol (RDAP)", RFC 8605, DOI 10.17487/RFC8605, , <https://www.rfc-editor.org/info/rfc8605>.

Appendix A. jCard-JSContact Mapping

Provided that the keys defined in Section 3.5 are used for the JSContact maps, the mapping between the most commonly used jCard properties in an RDAP response and their JSContact counterparts is shown in the following. The mapping is done through the use of JSONPath expressions [I-D.ietf-jsonpath-base].

jCard property:
fn
Reference:
Section 6.2.1 of [RFC6350]
Path:
$..vcardArray[1][?(@[0]=='fn')][3]
JSContact property:
Name.full
Reference:
Section 2.2.1 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.[name.full,localizations.*.name.full]
jCard property:
"family name" component of n
Reference:
Section 6.2.2 of [RFC6350]
Path:
$..vcardArray[1][?(@[0]=='n')][3][0]
JSContact property:
"postOfficeBox" NameComponent of Name.components
Reference:
Section 2.5.1 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.[name.components[?(@.kind=='surname')].value,localizations.*.name.components[?(@.kind=='surname')].value]
jCard property:
"given name" component of n
Reference:
Section 6.2.2 of [RFC6350]
Path:
$..vcardArray[1][?(@[0]=='n')][3][1]
JSContact property:
"given" NameComponent of Name.components
Reference:
Section 2.5.1 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.[name.components[?(@.kind=='given')].value,localizations.*.name.components[?(@.kind=='given')].value]
jCard property:
n
Reference:
Section 6.3.1 of [RFC6350]
Path:
$..vcardArray[1][?(@[0]=='n')]
JSContact property:
Name
Reference:
Section 2.5.1 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.[name,localizations.*.name]
jCard property:
org
Reference:
Section 6.6.4 of [RFC6350]
Path:
$..vcardArray[1][?(@[0]=='org')][3]
JSContact property:
Organization.name
Reference:
Section 2.2.2 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.[organizations.org.name,localizations.*.organizations.org.name]
jCard property:
tel with type="voice"
Reference:
Section 6.4.1 of [RFC6350]
Path:
$..vcardArray[1][?(@[1].type=='voice')][3]
JSContact property:
Phone.number
Reference:
Section 2.3.3 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.phones.voice.number
jCard property:
tel with type="fax"
Reference:
Section 6.4.1 of [RFC6350]
Path:
$..vcardArray[1][?(@[1].type=='fax')][3]
JSContact property:
Phone.number
Reference:
Section 2.3.3 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.phones.fax.number
jCard property:
email
Reference:
Section 6.4.2 of [RFC6350]
Path:
$..vcardArray[1][?(@[0]=='email')][3]
JSContact property:
Email.address
Reference:
Section 2.3.1 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.[emails.email.address,localizations.*.emails.email.address]
jCard property:
"label" parameter of adr
Reference:
Section 6.3.1 of [RFC6350]
Path:
$..vcardArray[1][?(@[0]=='adr')][1].label
JSContact property:
Address.full
Reference:
Section 2.5.1 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.[addresses.adr.full,localizations.*.addresses.adr.full]
jCard property:
"post office box" component of adr
Reference:
Section 6.3.1 of [RFC6350]
Path:
$..vcardArray[1][?(@[0]=='adr')][3][1]
JSContact property:
"postOfficeBox" AddressComponent of Address.components
Reference:
Section 2.5.1 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.[addresses.addr.components[?(@.kind=='postOfficeBox')].value,localizations.*.addresses.addr.components[?(@.kind=='postOfficeBox')].value]
jCard property:
"street address" component of adr
Reference:
Section 6.3.1 of [RFC6350]
Path:
$..vcardArray[1][?(@[0]=='adr')][3][2]
JSContact property:
"name" AddressComponent of Address.components
Reference:
Section 2.5.1 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.[addresses.addr.components[?(@.kind=='name')].value,localizations.*.addresses.addr.components[?(@.kind=='name')].value]
jCard property:
"locality" component of adr
Reference:
Section 6.3.1 of [RFC6350]
Path:
$..vcardArray[1][?(@[0]=='adr')][3][3]
JSContact property:
"locality" AddressComponent of Address.components
Reference:
Section 2.5.1 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.[addresses.addr.components[?(@.kind=='locality')].value,localizations.*.addresses.addr.components[?(@.kind=='locality')].value]
jCard property:
"region" component of adr
Reference:
Section 6.3.1 of [RFC6350]
Path:
$..vcardArray[1][?(@[0]=='adr')][3][4]
JSContact property:
"region" AddressComponent of Address.components
Reference:
Section 2.5.1 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.[addresses.addr.components[?(@.kind=='region')].value,localizations.*.addresses.addr.components[?(@.kind=='region')].value]
jCard property:
"postal code" component of adr
Reference:
Section 6.3.1 of [RFC6350]
Path:
$..vcardArray[1][?(@[0]=='adr')][3][5]
JSContact property:
"postcode" AddressComponent of Address.components
Reference:
Section 2.5.1 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.[addresses.addr.components[?(@.kind=='postcode')].value,localizations.*.addresses.addr.components[?(@.kind=='postcode')].value]
jCard property:
"country name" component of adr
Reference:
Section 6.3.1 of [RFC6350]
Path:
$..vcardArray[1][?(@[0]=='adr')][3][6]
JSContact property:
"country" AddressComponent of Address.components
Reference:
Section 2.5.1 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.[addresses.addr.components[?(@.kind=='country')].value,localizations.*.addresses.addr.components[?(@.kind=='country')].value]
jCard property:
"cc" parameter of adr
Reference:
Section 3.1 of [RFC8605]
Path:
$..vcardArray[1][?(@[0]=='adr')][1].cc
JSContact property:
Address.countryCode
Reference:
Section 2.5.1 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.[addresses.addr.countryCode,localizations.*.addresses.addr.countryCode]
jCard property:
adr
Reference:
Section 6.3.1 of [RFC6350]
Path:
$..vcardArray[1][?(@[0]=='adr')]
JSContact property:
Address
Reference:
Section 2.5.1 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.[addresses.addr,localizations.*.addresses.addr]
jCard property:
contact-uri
Reference:
Section 2.1 of [RFC8605]
Path:
$..vcardArray[1][?(@[0]=='contact-uri')]
JSContact property:
Link.uri
Reference:
Section 2.6.3 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.links.contact-uri.uri
jCard property:
url
Reference:
Section 6.7.8 of [RFC6350]
Path:
$..vcardArray[1][?(@[0]=='url')]
JSContact property:
Link.uri
Reference:
Section 2.6.3 of [I-D.ietf-calext-jscontact]
Path:
$..jscard.links.url.uri

Appendix B. Change Log

B.1. Change from 00 to 01

  1. Changed category from "Best Current Practice" to "Standards Track"

  2. Replaced the example of Figure 2

  3. Changed the title of the "Migration from JCard to JSCard" section to "Transition Considerations"

  4. Added Section 3.8

  5. Updated Section 6

  6. Updated Section 7

  7. Rearranged the description of stage 1 in Section 4.2.2

  8. Changed the names of the transition stages 1 and 2

  9. Corrected examples

  10. Changed the rdapConformance tag "jscard_level_0" to "jscard"

  11. Removed the "Best Practices for deprecating a REST API features" section,but added a useful reference.

B.2. Change from 01 to 02

  1. Removed the sentence "which cannot be represented using jCard" in Section 1.1.

B.3. Change from 02 to 03

  1. Updated section "Conventions Used in This Document".

  2. Updated the contact in "IANA Considerations" section.

  3. Changed the reference draft-loffredo-calext-jscontact-vcard to draft-ietf-calext-jscontact-vcard.

  4. Added reference to RFC8174.

  5. Other minor edits.

B.4. Change from 03 to 04

  1. Updated the reference draft-dalal-deprecation-header to draft-ietf-httpapi-deprecation-header.

B.5. Initial WG version

  1. Ported from draft-loffredo-regext-rdap-jcard-deprecation-04 renamed to draft-ietf-regext-rdap-jscontact-00.

B.6. Change from 00 to 01

  1. Updated Section 3 and Figure 2.

B.7. Change from 01 to 02

  1. Updated Section 2 and Figure 2.

B.8. Change from 02 to 03

  1. Replaced references to obsolete RFC7482 and RFC7483 with RFC9082 and RFC9083.

  2. Updated Section 3 and Figure 2.

B.9. Change from 03 to 04

  1. Changed the references to Internet Drafts.

  2. Added an example showing how localizations are treated in JSContact.

  3. Changed the position of section "Goals" in Section 4.2.

  4. Added three more implementations to Section 5.

  5. Changed the rdapConformance tag "jscard" to "jscard_0"

  6. Added clarifications addressing the feedback provided by Jasdip Singh about version -03.

  7. Added Section 8.

  8. Other minor edits.

B.10. Change from 04 to 05

  1. Updated Figure 2 to make it compliant with draft-ietf-jmap-jscontact-09.

B.11. Change from 05 to 06

  1. Reviewed the notices presented in stages.

B.12. Change from 06 to 07

  1. Corrected the JSON Pointer expressions in Figure 1.

  2. Other minor edits.

B.13. Change from 07 to 08

  1. Corrected a nit in Figure 1.

  2. Removed the reference to draft-ietf-httpapi-deprecation-header.

  3. Replaced the "deprecation" link relation type with "related".

  4. Moved the references to JSContact drafts to the "Normative References" section.

B.14. Change from 08 to 09

  1. Updated the references to JSContact drafts due to the transfer from JMAP to CalExt.

B.15. Change from 09 to 10

  1. Updated Figure 2 to make it compliant with draft-ietf-calext-jscontact-02.

B.16. Change from 10 to 11

  1. Added Appendix "jCard-JSContact Mapping".

B.17. Change from 11 to 12

  1. Renamed the "jscard" property to "jscard_0".

  2. Corrected JSONPath expressions in Appendix A.

B.18. Change from 12 to 13

  1. Reverted the names of response extension, the rdapConformance tag and extension identifier from "jscard_0" to "jscard".

  2. Corrected Figure 1 by removing initial '/' character from JSONPath notations related to localizations.

B.19. Change from 13 to 14

  1. Corrected Figure 2 by replacing "online" property with "cryptoKeys" and "links" properties.

B.20. Change from 14 to 15

  1. Corrected Figure 1, Figure 2 and Appendix A to make them compliant with draft-ietf-calext-jscontact-06.

  2. Removed mention of JSContact CardGroup object.

  3. Renamed and changed Section 3.

  4. Added Section 6.2.

B.21. Change from 14 to 15

  1. Corrected Figure 1, Figure 2 and Appendix A to make them compliant with draft-ietf-calext-jscontact-06.

  2. Removed mention of JSContact CardGroup object.

  3. Renamed and changed Section 3.

  4. Added Section 6.2.

B.22. Change from 15 to 16

  1. Replaced JSContact "type" with "kind" in figures.

  2. Removed "jCard deprecation" stage and "jcard" query parameter.

  3. Renamed "jCard deprecated" stage into "jCard deprecation".

  4. Rephrased Section 7.

  5. Corrected JSContact examples based on draft-ietf-calext-jscontact-11.

  6. Fixed nits.

B.23. Change from 16 to 17

  1. Fixed Figure 1, Figure 2, Section 6.3 and Appendix A to make them compliant with draft-ietf-calext-jscontact-16 and purge them of the JSContact properties which are hardly used in RDAP.

  2. Rearranged Section 3.

  3. Added other mapping correspondences to Appendix A.

Authors' Addresses

Mario Loffredo
IIT-CNR/Registro.it
Via Moruzzi,1
56124 Pisa
Italy
Gavin Brown
CentralNic Group plc
Saddlers House, 44 Gutter Lane
London
EC2V 6BR
United Kingdom