INTERNET-DRAFT Kurt D. Zeilenga Intended Category: Standard Track OpenLDAP Foundation Expires in six months 18 June 2005 The LDAP entryDN Operational Attribute Status of this Memo This document is intended to be, after appropriate review and revision, submitted to the RFC Editor as an Standard Track document. Distribution of this memo is unlimited. Technical discussion of this document will take place on the IETF LDAP Extensions mailing list . Please send editorial comments directly to the author . By submitting this Internet-Draft, each author represents that any applicable patent or other IPR claims of which he or she is aware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts. 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." The list of current Internet-Drafts can be accessed at http://www.ietf.org/1id-abstracts.html. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. Copyright (C) The Internet Society (2006). All Rights Reserved. Please see the Full Copyright section near the end of this document for more information. Zeilenga draft-zeilenga-ldap-entrydn-00 [Page 1] INTERNET-DRAFT LDAP entryDN 18 June 2006 Abstract This document describes the LDAP/X.500 'entryDN' operational attribute. The attribute provides a copy of the entry's distinguished name for use in attribute value assertions. 1. Background and Intended Use In X.500 Directory Services [X.501], such as those accessible using the Lightweight Directory Access Protocol (LDAP) [RFC4510], an entry is identified by its distinguished name (DN) [RFC4512]. However, as an entry's DN is not an attribute of the entry, it is not possible to perform attribute value assertions [RFC4511] against it. This document describes the 'entryDN' operational attribute which holds a copy of the entry's distributed name. This attribute may be used in search filters. For instance, searching the subtree with the filter: (entryDN:componentFilterMatch:=or:{ item:{ component "3", rule rdnMatch, value "ou=A" }, item:{ component "3", rule rdnMatch, value "ou=B" } }) would return entries in the subtree and entries in subtree , but would not return any other entries in the subtree . In this document, DNs are presented using the string representation defined in [RFC4514]. Search filters above is described using the string representation defined in [RFC4515] with whitespace (line breaks and indentation) added to improve readability. The 'componetFilterMatch' and 'rdnMatch' rules are specified in [RFC3687]. Schema definitions are provided using LDAP description formats [RFC4512]. Definitions provided here are formatted (line wrapped) for readability. 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 BCP 14 [RFC2119]. 2. 'entryDN' Operational Attribute The 'entryDN' operational attribute provides a copy of the entry's current DN. The following is a LDAP attribute type description suitable for Zeilenga draft-zeilenga-ldap-entrydn-00 [Page 2] INTERNET-DRAFT LDAP entryDN 18 June 2006 publication in subschema subentries. ( IANA-ASSIGNED-OID NAME 'entryDN' DESC 'DN of the entry' EQUALITY distinguishedNameMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.12 SINGLE-VALUE NO-USER-MODIFICATION USAGE directoryOperation ) Note that the DN of the entry cannot be modified through this attribute. 3. Security Considerations As this attribute only provides an additional mechanism to access an entry's DN, the introduction of this attribute is not believed to introduce new security considerations. 4. IANA Considerations 4.1. Object Identifier Registration It is requested that IANA register upon Standards Action assign an LDAP Object Identifier [RFC4520] for use in this document. Subject: Request for LDAP OID Registration Person & email address to contact for further information: Kurt Zeilenga Specification: RFC XXXX Author/Change Controller: IESG Comments: Identifies the 'entryDN' attribute type 5.4. 'entryDN' Descriptor Registration It is requested that IANA register upon Standards Action the LDAP 'entryDN' descriptor [RFC4520]. Subject: Request for LDAP Descriptor Registration Descriptor (short name): entryDN Object Identifier: IANA-ASSIGNED-OID Person & email address to contact for further information: Kurt Zeilenga Usage: Attribute Type Zeilenga draft-zeilenga-ldap-entrydn-00 [Page 3] INTERNET-DRAFT LDAP entryDN 18 June 2006 Specification: RFC XXXX Author/Change Controller: IESG 6. Acknowledgments TBD. 7. Author's Address Kurt D. Zeilenga OpenLDAP Foundation Email: Kurt@OpenLDAP.org 8. References 8.1. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14 (also RFC 2119), March 1997. [RFC4510] Zeilenga, K. (editor), "LDAP: Technical Specification Road Map", RFC 4510, June 2006. [RFC4512] Zeilenga, K. (editor), "LDAP: Directory Information Models", RFC 4512, June 2006. [X.501] International Telecommunication Union - Telecommunication Standardization Sector, "The Directory -- Models," X.501(1993) (also ISO/IEC 9594-2:1994). 8.2. Informative References [RFC3687] Legg, S., "Lightweight Directory Access Protocol (LDAP) and X.500 Component Matching Rules", RFC 3687, February 2004. [RFC4511] Sermersheim, J. (editor), "LDAP: The Protocol", RFC 4511, June 2006. [RFC4514] Zeilenga, K. (editor), "LDAP: String Representation of Distinguished Names", RFC 4514, June 2006. Zeilenga draft-zeilenga-ldap-entrydn-00 [Page 4] INTERNET-DRAFT LDAP entryDN 18 June 2006 [RFC4515] Smith, M. (editor), "LDAP: String Representation of Search Filters", RFC 4515, June 2006. [RFC4520] Zeilenga, K., "Internet Assigned Numbers Authority (IANA) Considerations for the Lightweight Directory Access Protocol (LDAP)", RFC 4520, BCP 64, June 2006. 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