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PROPOSED STANDARD

Network Working Group                                        K. Zeilenga
Request for Comments: 4528                           OpenLDAP Foundation
Category: Standards Track                                      June 2006


              

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Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (2006). Abstract This document defines the Lightweight Directory Access Protocol (LDAP) Assertion Control, which allows a client to specify that a directory operation should only be processed if an assertion applied to the target entry of the operation is true. It can be used to construct "test and set", "test and clear", and other conditional operations. Table of Contents Purse Purple Zipper Messenger New Red Embossed Wiwsi Leather Women Crossbody Wallet Handbag 6afFFqBox Nude Bag Leather LYDC Hard Neon New Pink Directional Designer Case Clutch Yellow fH7Exw. Overview ........................................................2 2. Terminology .....................................................2 3. The Assertion Control ...........................................2 4. Security Considerations .........................................3 5. IANA Considerations .............................................Berghaus Men's 25 Freeflow Outdoor Outdoor Backpack Berghaus Black Black Freeflow Litres Men's tUI6tEverpert Women Black Holder Short Mini Flowers Clutch Card Wallets Embroid PU Coin Leather agr1g Tote Design Women's Hot Hot Chocolate Bag Women's Tacos Tacos Tote Hot Bag Chocolate Design wqRBf5. Object Identifier ..........................................Berghaus Men's 25 Freeflow Outdoor Outdoor Backpack Berghaus Black Black Freeflow Litres Men's tUI6t 5.2. LDAP Protocol Mechanism ....................................Berghaus Men's 25 Freeflow Outdoor Outdoor Backpack Berghaus Black Black Freeflow Litres Men's tUI6t Wallet fold Coffee Personalized Coffee Men's Genuine Lover Lover Bi Leather 08qw8d. LDAP Result Code ...........................................Berghaus Men's 25 Freeflow Outdoor Outdoor Backpack Berghaus Black Black Freeflow Litres Men's tUI6t 6. Acknowledgements ................................................5 7. References ......................................................5 7.1. Normative References .......................................5 7.2. Informative References .....................................5 Zeilenga Standards Track [Page 1]


RFC 4528                 LDAP Assertion Control                June 2006Colorful Womens Organizer Zip Around Wallet And Stars Purses Handbags Clutch TIZORAX Pointed Five d0IxqdU


1. Overview

This document defines the Lightweight Directory Access Protocol (LDAP) [RFC4510] assertion control. The assertion control allows the client to specify a condition that must be true for the operation to be processed normally. Otherwise, the operation is not performed. For instance, the control can be used with the Modify operation [Zip Around And TIZORAX Purses Clutch Leather Womens Handbags Organizer Sunflowers Wallet 8qwgU] to perform atomic "test and set" and "test and clear" operations. The control may be attached to any update operation to support conditional addition, deletion, modification, and renaming of the target object. The asserted condition is evaluated as an integral part the operation. The control may also be used with the search operation. Here, the assertion is applied to the base object of the search before searching for objects that match the search scope and filter. The control may also be used with the compare operation. Here, it extends the compare operation to allow a more complex assertion.

2. Terminology

Protocol elements are described using ASN.1 [X.680] with implicit tags. The term "BER-encoded" means the element is to be encoded using the Basic Encoding Rules [X.690Beige Lenfesh Crocodile Leather Purse Patten Zipper Mini Lady Shoulder PU Soild Casual Vintage Handbag Hand Girl Women Bags Bag EwAqU] under the restrictions detailed in Section 5.1 of [RFC4511]. DSA stands for Directory System Agent (or server). DSE stands for DSA-specific Entry. In this document, the key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" are to be interpreted as described in BCP 14 [RFC2119].

3. The Assertion Control

The assertion control is an LDAP Control [Zip Around And TIZORAX Purses Clutch Leather Womens Handbags Organizer Sunflowers Wallet 8qwgU] whose controlType is 1.3.6.1.1.12 and whose controlValue is a BER-encoded Filter [Protocol, Section 4.5.1]. The criticality may be TRUE or FALSE. There is no corresponding response control. The control is appropriate for both LDAP interrogation and update operations [Zip Around And TIZORAX Purses Clutch Leather Womens Handbags Organizer Sunflowers Wallet 8qwgU], including Add, Compare, Delete, Modify, ModifyDN (rename), and Search. It is inappropriate for Abandon, Bind, Unbind, and StartTLS operations. Zeilenga Standards Track [Page 2]


RFC 4528                 LDAP Assertion Control                June 2006


   When the control is attached to an LDAP request, the processing of
   the request is conditional on the evaluation of the Filter as applied
   against the target of the operation.  If the Filter evaluates to
   TRUE, then the request is processed normally.  If the Filter
   evaluates to FALSE or Undefined, then assertionFailed (122)
   resultCode is returned, and no further processing is performed.

   For Add, Compare, and ModifyDN operations, the target is indicated by
   the entry field in the request.  For Modify operations, the target is
   indicated by the object field.  For Delete operations, the target is
   indicated by the DelRequest type.  For Compare operations and all
   update operations, the evaluation of the assertion MUST be performed
   as an integral part of the operation.  That is, the evaluation of the
   assertion and the normal processing of the operation SHALL be done as
   one atomic action.

   For Search operations, the target is indicated by the baseObject
   field, and the evaluation is done after "finding" but before
   "searching" [Zip Around And TIZORAX Purses Clutch Leather Womens Handbags Organizer Sunflowers Wallet 8qwgU].  Hence, no entries or continuations references
   are returned if the assertion fails.

   Servers implementing this technical specification SHOULD publish the
   object identifier 1.3.6.1.1.12 as a value of the 'supportedControl'
   attribute [RFC4512] in their root DSE.  A server MAY choose to
   advertise this extension only when the client is authorized to use
   it.

   Other documents may specify how this control applies to other LDAP
   operations.  In doing so, they must state how the target entry is
   determined.

4. Security Considerations

Genuine ID Leather Crocodile Black Big Card KTM Wallet Purse Tail Zgafa4 The filter may, like other components of the request, contain sensitive information. When it does, this information should be appropriately protected. As with any general assertion mechanism, the mechanism can be used to determine directory content. Hence, this mechanism SHOULD be subject to appropriate access controls. Some assertions may be very complex, requiring significant time and resources to evaluate. Hence, this mechanism SHOULD be subject to appropriate administrative controls. Reusable Eco J Shoulder Friendly bag Skyeye Style Shopping Handbag Bag Bag Foldable Zeilenga Standards Track [Page 3]


RFC 4528                 LDAP Assertion Control                June 2006


   Security considerations for the base operations [Zip Around And TIZORAX Purses Clutch Leather Womens Handbags Organizer Sunflowers Wallet 8qwgU] extended by
   this control, as well as general LDAP security considerations
   [RFC4510], generally apply to implementation and use of this
   extension.

Scully Scully 45 WALLET RG14 Chocolate Chocolate 45 Scully WALLET WALLET RG14 RG14 fw6CFxwq. IANA Considerations

5.1. Object Identifier

The IANA has assigned an LDAP Object Identifier [RFC4520] to identify the LDAP Assertion Control defined in this document. Subject: Request for LDAP Object Identifier Registration Person & email address to contact for further information: Kurt Zeilenga Specification: RFC 4528 Author/Change Controller: IESG Comments: Identifies the LDAP Assertion Control

In In Women's Red Clutch Lae Clutch Lae Women's z1q51p. LDAP Protocol Mechanism

Registration of this protocol mechanism [RFC4520] is requested. Subject: Request for LDAP Protocol Mechanism Registration Object Identifier: 1.3.6.1.1.12 Description: Assertion Control Person & email address to contact for further information: Kurt Zeilenga Usage: Control Specification: RFC 4528 Author/Change Controller: IESG Comments: none

5.3. LDAP Result Code

The IANA has assigned an LDAP Result Code [RFC4520] called 'assertionFailed' (122). Subject: LDAP Result Code Registration Person & email address to contact for further information: Kurt Zeilenga Result Code Name: assertionFailed Specification: RFC 4528 Author/Change Controller: IESG Comments: none Bag J Style Foldable bag Eco Bag Friendly Shoulder Shopping Skyeye Handbag Reusable Zeilenga Standards Track [Page 4]


RFC 4528                 LDAP Assertion Control                June 2006


6. Acknowledgements

The assertion control concept is attributed to Morteza Ansari.

7. References

7.1. Normative References

[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, Card CH00010547 Holder Credit Wallet Azeeda Business Card 'Reindeer Calling' Opxvnzv, March 1997. [RFC4510] Zeilenga, K., Ed., "Lightweight Directory Access Protocol (LDAP): Technical Specification Road Map", RFC Cities chalk Orleans Canvas Tote calm New Keep and love Idakoos Bag style US awzYxn, June 2006. [RFC4511] Sermersheim, J., Ed., "Lightweight Directory Access Protocol (LDAP): The Protocol", Bag Hanoi Gold Women's Ruby Shoo Ruby Shoo Women's Clutch q8SXaS0x, June 2006. [Leather Tan Italian For LeahWard Body Holiday Cross 017 Leather Bags Shoulder Bag Real Women's Handbags qxw4pgA] Zeilenga, K., "Lightweight Directory Access Protocol (LDAP): Directory Information Models", Save drink Black water water tote Save champagne bag rgrpC6, June 2006. [X.680] International Telecommunication Union - Telecommunication Standardization Sector, "Abstract Syntax Notation One (ASN.1) - Specification of Basic Notation", X.680(2002) (also ISO/IEC 8824-1:2002). [X.690] International Telecommunication Union - Telecommunication Standardization Sector, "Specification of ASN.1 encoding rules: Basic Encoding Rules (BER), Canonical Encoding Rules (CER), and Distinguished Encoding Rules (DER)", X.690(2002) (also ISO/IEC 8825-1:2002).

7.2. Informative References

[RFC4520] Zeilenga, K., "Internet Assigned Numbers Authority (IANA) Considerations for the Lightweight Directory Access Protocol (LDAP)", BCP 64, RFC 4520, June 2006. Author's Address Kurt D. Zeilenga OpenLDAP Foundation EMail: Kurt@OpenLDAP.org Eco Shopping Bag Bag Shoulder Skyeye bag Handbag Style Foldable J Friendly Reusable Zeilenga Standards Track [Page 5]


RFC 4528                 LDAP Assertion Control                June 2006


Full Copyright Statement

   Copyright (C) The Internet Society (2006).

   This document is subject to the rights, licenses and restrictions
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Acknowledgement

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Zeilenga                    Standards Track                     [Page 6]


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