XEP-0064: XPath Filtering

Abstract:A module that provides an XPath matching condition for packet filtering.
Author:Robert Norris
Copyright:© 1999 - 2011 XMPP Standards Foundation. SEE LEGAL NOTICES.
Status:Deferred
Type:Informational
Version:0.2
Last Updated:2003-09-30

WARNING: Consideration of this document has been Deferred by the XMPP Standards Foundation. Implementation of the protocol described herein is not recommended.

Table of Contents


1. Introduction
2. Conditions
3. Security Considerations
4. IANA Considerations
5. JANA Considerations

Appendices
    A: Document Information
    B: Author Information
    C: Legal Notices
    D: Relation to XMPP
    E: Discussion Venue
    F: Requirements Conformance
    G: Notes
    H: Revision History

1. Introduction

This document defines a module for Packet Filtering [1] that provides an XPath matching condition for packet filtering.

This module operates in the "http://jabber.org/protocol/filter/xpath" namespace.

2. Conditions

This module defines the fullowing conditions:

Example 1. Matches all messages with that have a subject element

<xpath xmlns='http://jabber.org/protocol/filter/xpath'>/message/subject</xpath>

Example 2. Matches all presence packets that have an x:delay stamp

<xpath xmlns='http://jabber.org/protocol/filter/xpath'>/presence/x[namespace-uri()=='jabber:x:delay']</xpath>

3. Security Considerations

There are no security features or concerns related to this proposal.

4. IANA Considerations

This document requires no interaction with the IANA.

5. JANA Considerations

No namespaces or parameters need to be registered with JANA as a result of this document.

Appendices

Appendix A: Document Information

Series: XEP
Number: 0064
Publisher: XMPP Standards Foundation
Status: Deferred
Type: Informational
Version: 0.2
Last Updated: 2003-09-30
Approving Body: XMPP Council
Dependencies: None
Supersedes: None
Superseded By: None
Short Name: Not yet assigned
Source Control: HTML
This document in other formats: XML  PDF

Appendix B: Author Information

Robert Norris

Email: rob@cataclysm.cx
JabberID: rob@cataclysm.cx

Appendix C: Legal Notices

Copyright

This XMPP Extension Protocol is copyright © 1999 - 2011 by the XMPP Standards Foundation (XSF).

Permissions

Permission is hereby granted, free of charge, to any person obtaining a copy of this specification (the "Specification"), to make use of the Specification without restriction, including without limitation the rights to implement the Specification in a software program, deploy the Specification in a network service, and copy, modify, merge, publish, translate, distribute, sublicense, or sell copies of the Specification, and to permit persons to whom the Specification is furnished to do so, subject to the condition that the foregoing copyright notice and this permission notice shall be included in all copies or substantial portions of the Specification. Unless separate permission is granted, modified works that are redistributed shall not contain misleading information regarding the authors, title, number, or publisher of the Specification, and shall not claim endorsement of the modified works by the authors, any organization or project to which the authors belong, or the XMPP Standards Foundation.

Disclaimer of Warranty

## NOTE WELL: This Specification is provided on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. ##

Limitation of Liability

In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall the XMPP Standards Foundation or any author of this Specification be liable for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising from, out of, or in connection with the Specification or the implementation, deployment, or other use of the Specification (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if the XMPP Standards Foundation or such author has been advised of the possibility of such damages.

IPR Conformance

This XMPP Extension Protocol has been contributed in full conformance with the XSF's Intellectual Property Rights Policy (a copy of which can be found at <http://xmpp.org/about-xmpp/xsf/xsf-ipr-policy/> or obtained by writing to XMPP Standards Foundation, 1899 Wynkoop Street, Suite 600, Denver, CO 80202 USA).

Appendix D: Relation to XMPP

The Extensible Messaging and Presence Protocol (XMPP) is defined in the XMPP Core (RFC 3920) and XMPP IM (RFC 3921) specifications contributed by the XMPP Standards Foundation to the Internet Standards Process, which is managed by the Internet Engineering Task Force in accordance with RFC 2026. Any protocol defined in this document has been developed outside the Internet Standards Process and is to be understood as an extension to XMPP rather than as an evolution, development, or modification of XMPP itself.

Appendix E: Discussion Venue

The primary venue for discussion of XMPP Extension Protocols is the <standards@xmpp.org> discussion list.

Discussion on other xmpp.org discussion lists might also be appropriate; see <http://xmpp.org/about/discuss.shtml> for a complete list.

Errata can be sent to <editor@xmpp.org>.

Appendix F: Requirements Conformance

The following requirements keywords as used in this document are to be interpreted as described in RFC 2119: "MUST", "SHALL", "REQUIRED"; "MUST NOT", "SHALL NOT"; "SHOULD", "RECOMMENDED"; "SHOULD NOT", "NOT RECOMMENDED"; "MAY", "OPTIONAL".

Appendix G: Notes

1. XEP-0062: Packet Filtering <http://xmpp.org/extensions/xep-0062.html>.

Appendix H: Revision History

Note: Older versions of this specification might be available at http://xmpp.org/extensions/attic/

Version 0.2 (2003-09-30)

At the request of the author, changed the status of this document to Deferred pending development of an implementation; also changed the type to Informational. (psa)

Version 0.1 (2002-12-05)

Initial version. (rn)

END