Software Information This document specifies an extended data format whereby XMPP service discovery responses can include detailed information about the software application that powers a given XMPP entity for includion in service discovery responses. This XMPP Extension Protocol is copyright © 1999 – 2024 by the XMPP Standards Foundation (XSF). 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. ## 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. ## 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. 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 <https://xmpp.org/about/xsf/ipr-policy> or obtained by writing to XMPP Standards Foundation, P.O. Box 787, Parker, CO 80134 USA). 0232 Deferred Standards Track Standards Council XMPP Core XEP-0004 XEP-0030 NOT_YET_ASSIGNED Peter Saint-Andre stpeter@stpeter.im stpeter@jabber.org https://stpeter.im/ 0.3 2009-02-26 psa

Per Last Call feedback, removed icons for presence states; redefined the icon field to use media element per XEP-0221.

 0.2 2008-03-14 psa

Added icon fields.

 0.1 2008-01-30 psa

Initial published version.

 0.0.3 2008-01-23 psa

Added software field; generalized to be software information, not client information.

 0.0.2 2008-01-22 psa

Clarified relationship to Software Version (XEP-0092).

 0.0.1 2008-01-21 psa

First draft.

Service Discovery Extensions (XEP-0128) XEP-0128: Service Discovery Extensions <https://xmpp.org/extensions/xep-0128.html>. defines a way for an XMPP entity to include extended information in its responses to Service Discovery (XEP-0030) XEP-0030: Service Discovery <https://xmpp.org/extensions/xep-0030.html>. information requests. This document specifies a usage of Service Discovery Extensions (XEP-0128) XEP-0128: Service Discovery Extensions <https://xmpp.org/extensions/xep-0128.html>. whereby an XMPP entity can provide detailed data about itself in such responses. This protocol is intended to replace Software Version (XEP-0092) XEP-0092: Software Version <https://xmpp.org/extensions/xep-0092.html>. for software information discovery (thus reducing or eliminating the need for distinct software version requests) and also provides a format that can be encapsulated into Entity Capabilities (XEP-0115) XEP-0115: Entity Capabilities <https://xmpp.org/extensions/xep-0115.html>. notifications.

To illustrate this usage, consider the following example of a disco#info request-response interaction that includes detailed client information:

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Upon receiving the disco#info request, the software replies and includes extended information in a data form (Data Forms (XEP-0004) XEP-0004: Data Forms <https://xmpp.org/extensions/xep-0004.html>.), where the icon is communicated using the format defined in Data Forms Media Element (XEP-0221) XEP-0221: Data Forms Media Element <https://xmpp.org/extensions/xep-0221.html>..

urn:xmpp:dataforms:softwareinfo http://www.shakespeare.lit/clients/exodus.jpg cid:sha1+f24030b8d91d233bac14777be5ab531ca3b9f102@bob.xmpp.org Windows XP Exodus 0.9.1 ]]>

The fields have the following meaning:

Service discovery information is typically world-readable. Therefore, care should be taken in exposing information that may make it easier for a potential attacker to target the publishing entity's system (e.g., the operating system on which the software is running).

This document requires no interaction with the Internet Assigned Numbers Authority (IANA) The Internet Assigned Numbers Authority (IANA) is the central coordinator for the assignment of unique parameter values for Internet protocols, such as port numbers and URI schemes. For further information, see <http://www.iana.org/>..

The XMPP Registrar The XMPP Registrar maintains a list of reserved protocol namespaces as well as registries of parameters used in the context of XMPP extension protocols approved by the XMPP Standards Foundation. For further information, see <https://xmpp.org/registrar/>. shall include the following information in its registries.

Field Standardization for Data Forms (XEP-0068) XEP-0068: Field Data Standardization for Data Forms <https://xmpp.org/extensions/xep-0068.html>. defines a process for standardizing the fields used within Data Forms qualified by a particular namespace, and Service Discovery Extensions (XEP-0128) XEP-0128: Service Discovery Extensions <https://xmpp.org/extensions/xep-0128.html>. describes how to use field standardization in the context of service discovery. This section registers fields for software information scoped by the "urn:xmpp:dataforms:softwareinfo" FORM_TYPE.

urn:xmpp:dataforms:softwareinfo XEP-0232 Forms enabling the communication of detailed information about an XMPP client. ]]>

Thanks to Dave Cridland, Olivier Goffart, Joe Hildebrand, Etan Reisner, Remko Tronçon, and Jiří Zárevúcký for their comments.