Network Working Group K. Zeilenga
Request for Comments: 4525 OpenLDAP Foundation
Category: Informational June 2006
Network Working Group K. Zeilenga
Request for Comments: 4525 OpenLDAP Foundation
Category: Informational June 2006
Lightweight Directory Access Protocol (LDAP) Modify-Increment Extension
轻量级目录访问协议（LDAP）修改增量扩展
Status of This Memo
关于下段备忘
This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited.
本备忘录为互联网社区提供信息。它没有规定任何类型的互联网标准。本备忘录的分发不受限制。
Copyright Notice
版权公告
Copyright (C) The Internet Society (2006).
版权所有（C）互联网协会（2006年）。
Abstract
摘要
This document describes an extension to the Lightweight Directory Access Protocol (LDAP) Modify operation to support an increment capability. This extension is useful in provisioning applications, especially when combined with the assertion control and/or the pre-read or post-read control extension.
本文档描述了轻量级目录访问协议（LDAP）修改操作的扩展，以支持增量功能。此扩展在配置应用程序中非常有用，尤其是与断言控件和/或读前或读后控件扩展相结合时。
Table of Contents
目录
1. Background and Intended Use .....................................1
2. The Modify-Increment Extension ..................................2
3. LDIF Support ....................................................2
4. Security Considerations .........................................3
5. IANA Considerations .............................................3
5.1. Object Identifier ..........................................3
5.2. LDAP Protocol Mechanism ....................................3
5.3. LDAP Protocol Mechanism ....................................4
6. References ......................................................4
6.1. Normative References .......................................4
6.2. Informative References .....................................5
1. Background and Intended Use .....................................1
2. The Modify-Increment Extension ..................................2
3. LDIF Support ....................................................2
4. Security Considerations .........................................3
5. IANA Considerations .............................................3
5.1. Object Identifier ..........................................3
5.2. LDAP Protocol Mechanism ....................................3
5.3. LDAP Protocol Mechanism ....................................4
6. References ......................................................4
6.1. Normative References .......................................4
6.2. Informative References .....................................5
The Lightweight Directory Access Protocol (LDAP) [RFC4510] does not currently provide an operation to increment values of an attribute. A client must read the values of the attribute and then modify those values to increment them by the desired amount. As the values may be updated by other clients between this add and modify, the client must
轻型目录访问协议（LDAP）[RFC4510]目前不提供增加属性值的操作。客户机必须读取属性的值，然后修改这些值以按所需的数量递增。由于其他客户端可能会在此添加和修改之间更新这些值，因此客户端必须
be careful to construct the modify request so that it fails in this case, and upon failure, to re-read the values and construct a new modify request.
请小心构造修改请求，使其在这种情况下失败，并在失败时重新读取值并构造新的修改请求。
This document extends the LDAP Modify Operation [RFC4511] to support an increment values capability. This feature is intended to be used with either the LDAP pre-read or post-read control extensions [RFC4527]. This feature may also be used with the LDAP assertion control extension [RFC4528] to provide test-and-increment functionality.
本文档扩展了LDAP修改操作[RFC4511]，以支持增量值功能。此功能旨在与LDAP读前或读后控制扩展一起使用[RFC4527]。此功能还可以与LDAP断言控制扩展[RFC4528]一起使用，以提供测试和增量功能。
In this document 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].
本文件中的关键词“必须”、“不得”、“必需”、“应”、“不应”、“应”、“不应”、“建议”、“可”和“可选”应按照BCP 14[RFC2119]中的说明进行解释。
This document extends the LDAP Modify request to support a increment values capability. Implementations of this extension SHALL support an additional ModifyRequest operation enumeration value increment (3), as described herein. Implementations not supporting this extension will treat this value as they would an unlisted value, e.g., as a protocol error.
本文档扩展了LDAP修改请求以支持增量值功能。此扩展的实现应支持额外的ModifyRequest操作枚举值增量（3），如本文所述。不支持此扩展的实现会将此值视为未列出的值，例如，视为协议错误。
The increment (3) operation value specifies that an increment values modification is requested. All existing values of the modification attribute are to be incremented by the listed value. The modification attribute must be appropriate for the request (e.g., it must have INTEGER or other increment-able values), and the modification must provide one and only one value. If the attribute is not appropriate for the request, a constraintViolation or other appropriate error is to be returned. If multiple values are provided, a protocolError is to be returned.
增量（3）操作值指定请求增量值修改。修改属性的所有现有值将按列出的值递增。修改属性必须适用于请求（例如，它必须具有整数或其他可增量的值），并且修改必须提供一个且仅提供一个值。如果该属性不适合该请求，将返回constraintViolation或其他适当的错误。如果提供了多个值，将返回一个protocolError。
Servers supporting this feature SHOULD publish the object identifier (OID) 1.3.6.1.1.14 as a value of the 'supportedFeatures' [RFC4512] attribute in the root DSE. Clients supporting this feature SHOULD NOT use the feature unless they know the server supports it.
支持此功能的服务器应将对象标识符（OID）1.3.6.1.1.14发布为根DSE中“supportedFeatures”[RFC4512]属性的值。支持此功能的客户端不应使用此功能，除非他们知道服务器支持此功能。
To represent Modify-Increment requests in LDAP Data Interchange Format [RFC2849], the ABNF [RFC4234] production <mod-spec> is extended as follows:
为了以LDAP数据交换格式[RFC2849]表示修改增量请求，ABNF[RFC4234]产品<mod spec>扩展如下：
mod-spec =/ "increment:" FILL AttributeDescription SEP attrval-spec "-" SEP
mod spec=/“增量：”填充属性描述SEP属性规范“-”SEP
For example,
例如
# Increment uidNumber
dn: cn=max-assigned uidNumber,dc=example,dc=com
changetype: modify
increment: uidNumber
uidNumber: 1
-
# Increment uidNumber
dn: cn=max-assigned uidNumber,dc=example,dc=com
changetype: modify
increment: uidNumber
uidNumber: 1
-
This LDIF fragment represents a Modify request to increment the value(s) of uidNumber by 1.
此LDIF片段表示将uidNumber的值增加1的修改请求。
General LDAP security considerations [RFC4510], as well as those specific to the LDAP Modify [RFC4511], apply to this Modify-Increment extension. Beyond these considerations, it is noted that introduction of this extension should reduce application complexity (by providing one operation for what presently requires multiple operations) and, hence, it may aid in the production of correct and secure implementations.
一般LDAP安全注意事项[RFC4510]以及特定于LDAP修改[RFC4511]的注意事项适用于此修改增量扩展。除此之外，还应注意，引入此扩展将降低应用程序的复杂性（通过为当前需要多个操作的操作提供一个操作），因此，它可能有助于生成正确和安全的实现。
Registration of the following values [RFC4520] have been completed.
已完成以下值[RFC4520]的注册。
The IANA has assigned an LDAP Object Identifier to identify the LDAP Modify-Increment feature, as defined in this document.
IANA已分配一个LDAP对象标识符，以标识本文档中定义的LDAP修改增量功能。
Subject: Request for LDAP Object Identifier Registration
Person & email address to contact for further information:
Kurt Zeilenga <kurt@OpenLDAP.org>
Specification: RFC 4525
Author/Change Controller: Author
Comments:
Identifies the LDAP Modify-Increment feature
Subject: Request for LDAP Object Identifier Registration
Person & email address to contact for further information:
Kurt Zeilenga <kurt@OpenLDAP.org>
Specification: RFC 4525
Author/Change Controller: Author
Comments:
Identifies the LDAP Modify-Increment feature
The following LDAP Protocol Mechanism has been registered.
已注册以下LDAP协议机制。
Subject: Request for LDAP Protocol Mechanism Registration
Object Identifier: 1.3.6.1.1.14
Description: Modify-Increment
Person & email address to contact for further information:
Kurt Zeilenga <kurt@openldap.org>
Subject: Request for LDAP Protocol Mechanism Registration
Object Identifier: 1.3.6.1.1.14
Description: Modify-Increment
Person & email address to contact for further information:
Kurt Zeilenga <kurt@openldap.org>
Usage: Feature
Specification: RFC 4525
Author/Change Controller: Kurt Zeilenga <kurt@openldap.org>
Comments: none
Usage: Feature
Specification: RFC 4525
Author/Change Controller: Kurt Zeilenga <kurt@openldap.org>
Comments: none
The IANA has assigned an LDAP ModifyRequest Operation Type (3) [RFC4520] for use in this document.
IANA已分配LDAP ModifyRequest操作类型（3）[RFC4520]用于本文档。
Subject: Request for LDAP Protocol Mechanism Registration
ModifyRequest Operation Name: increment
Description: Modify-Increment
Person & email address to contact for further information:
Kurt Zeilenga <kurt@openldap.org>
Usage: Feature
Specification: RFC 4525
Author/Change Controller: Kurt Zeilenga <kurt@openldap.org>
Comments: none
Subject: Request for LDAP Protocol Mechanism Registration
ModifyRequest Operation Name: increment
Description: Modify-Increment
Person & email address to contact for further information:
Kurt Zeilenga <kurt@openldap.org>
Usage: Feature
Specification: RFC 4525
Author/Change Controller: Kurt Zeilenga <kurt@openldap.org>
Comments: none
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2119]Bradner，S.，“RFC中用于表示需求水平的关键词”，BCP 14，RFC 2119，1997年3月。
[RFC4234] Crocker, D. and P. Overell, "Augmented BNF for Syntax Specifications: ABNF", RFC 4234, October 2005.
[RFC4234]Crocker，D.和P.Overell，“语法规范的扩充BNF:ABNF”，RFC 4234，2005年10月。
[RFC2849] Good, G., "The LDAP Data Interchange Format (LDIF) - Technical Specification", RFC 2849, June 2000.
[RFC2849]Good，G.，“LDAP数据交换格式（LDIF）-技术规范”，RFC 28492000年6月。
[RFC4510] Zeilenga, K., Ed., "Lightweight Directory Access Protocol (LDAP): Technical Specification Road Map", RFC 4510, June 2006.
[RFC4510]Zeilenga，K.，Ed.“轻量级目录访问协议（LDAP）：技术规范路线图”，RFC45102006年6月。
[RFC4511] Sermersheim, J., Ed., "Lightweight Directory Access Protocol (LDAP): The Protocol", RFC 4511, June 2006.
[RFC4511]Sermersheim，J.，Ed.，“轻量级目录访问协议（LDAP）：协议”，RFC4511，2006年6月。
[RFC4512] Zeilenga, K., "Lightweight Directory Access Protocol (LDAP): Directory Information Models", RFC 4512, June 2006.
[RFC4512]Zeilenga，K.，“轻量级目录访问协议（LDAP）：目录信息模型”，RFC4512，2006年6月。
[RFC4520] Zeilenga, K., "Internet Assigned Numbers Authority (IANA) Considerations for the Lightweight Directory Access Protocol (LDAP)", BCP 64, RFC 4520, June 2006.
[RFC4520]Zeilenga，K.，“轻量级目录访问协议（LDAP）的互联网分配号码管理局（IANA）注意事项”，BCP 64，RFC 4520，2006年6月。
[RFC4527] Zeilenga, K., "Lightweight Directory Access Protocol (LDAP) Read Entry Controls", RFC 4527, June 2006.
[RFC4527]Zeilenga，K.，“轻量级目录访问协议（LDAP）读取条目控制”，RFC4527，2006年6月。
[RFC4528] Zeilenga, K., "Lightweight Directory Access Protocol (LDAP) Assertion Control", RFC 4528, June 2006.
[RFC4528]Zeilenga，K.，“轻量级目录访问协议（LDAP）断言控制”，RFC4528，2006年6月。
Author's Address
作者地址
Kurt D. Zeilenga OpenLDAP Foundation
库尔特D.Zeeliga OpenLDAP基金会
EMail: Kurt@OpenLDAP.org
EMail: Kurt@OpenLDAP.org
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完整版权声明
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版权所有（C）互联网协会（2006年）。
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