Internet DRAFT - draft-guenther-geopriv-policy-caps
draft-guenther-geopriv-policy-caps
Geopriv C. Guenther
Internet-Draft H. Tschofenig
Expires: December 23, 2006 Siemens
June 21, 2006
An Extensible Markup Language (XML) Representation for Expressing
Geographic Location Information Policy Capabilities
draft-guenther-geopriv-policy-caps-04.txt
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Copyright Notice
Copyright (C) The Internet Society (2006).
Abstract
This specification defines a set of Extensible Markup Language (XML)
elements for expressing geographic location information policy
capabilities.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Structure of Geopriv Policy Capabilities . . . . . . . . . . . 5
4. XML Schema . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5. Example Document . . . . . . . . . . . . . . . . . . . . . . . 7
6. Security Considerations . . . . . . . . . . . . . . . . . . . 8
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9
7.1. Namespace Registration . . . . . . . . . . . . . . . . . . 9
7.2. Geopriv Policy Capabilities Schema Registration . . . . . 9
8. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 10
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9.1. Normative References . . . . . . . . . . . . . . . . . . . 11
9.2. Informative References . . . . . . . . . . . . . . . . . . 11
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 12
Intellectual Property and Copyright Statements . . . . . . . . . . 13
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1. Introduction
Authorization policies are an important component of presence
[RFC2778]. They allow the presentity to grant access to specific
pieces of information to watchers. Authorization policies have been
designed to be extensible. For this reason [I-D.ietf-simple-common-
policy-caps] defines a generic Extensible Markup Language (XML) based
format for representing policy capabilities. That format applies to
many policy types, including location and presence. This
specification extends that one by defining policy capabilities
specific to geographic location information. Those policy
capabilities correspond to the conditions, actions and
transformations defined in [I-D.ietf-geopriv-policy].
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2. Terminology
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 [RFC2119].
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3. Structure of Geopriv Policy Capabilities
The structure of common policy capability documents is defined in
[I-D.ietf-simple-common-policy-caps]. In that specification, each
policy capability document has three components - a list of supported
conditions, a list of supported actions, and a list of supported
transformations. This specification merely extends that document
with the conditions, actions and transformations defined in
[I-D.ietf-geopriv-policy]. It does so by defining the following
empty elements:
civic-loc-condition
geospatial-loc-condition
distribution-transformation
retention-tranformation
keep-rules-transformation
civic-loc-transformation
geospatial-loc-transformation
Each of these elements indicates whether the respective attribute in
[I-D.ietf-geopriv-policy] is supported. All of these elements are
defined within the namespace:
urn:ietf:params:xml:ns:geopriv-policy-capabilities
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4. XML Schema
<xs:schema
targetNamespace=
"urn:ietf:params:xml:ns:geopriv-policy-capabilities"
xmlns="urn:ietf:params:xml:ns:geopriv-policy-capabilities"
xmlns:pc="urn:ietf:params:xml:ns:policy-capabilities"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified"
attributeFormDefault="unqualified">
<xs:import namespace=
"urn:ietf:params:xml:ns:policy-capabilities" />
<xs:element name="civic-loc-condition"
type="pc:emptyType" />
<xs:element name="geospatial-loc-condition"
type="pc:emptyType"/>
<xs:element name="distribution-transformation"
type="pc:emptyType" />
<xs:element name="retention-tranformation"
type="pc:emptyType" />
<xs:element name="keep-rules-transformation"
type="pc:emptyType" />
<xs:element name="civic-loc-transformation"
type="pc:emptyType"/>
<xs:element name="geospatial-loc-transformation">
<xs:complexType>
<xs:sequence>
<xs:element name="lat-resolution"
type="pc:emptyType" minOccurs="0" />
<xs:element name="lon-resolution"
type="pc:emptyType" minOccurs="0" />
<xs:element name="alt-resolution"
type="pc:emptyType" minOccurs="0" />
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
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5. Example Document
The following document indicates that the identity and validity
conditions are supported, each of which is defined in [I-D.ietf-
geopriv-common-policy], while no support of sphere conditions is
indicated. Furthermore, the example indicates that the geolocation-
specific condition named civic-loc-condition is supported. With
respect to transformations, the example gives the indication that the
geolocation-specific transformations named keep-rules-transformation
is supported. This is also the case for geospatial-loc-
transformations, namely, for latitude and longitude values, but not
for altitude values:
<?xml version="1.0" encoding="UTF-8"?>
<policy-capabilities
xmlns="urn:ietf:params:xml:ns:policy-capabilities"
xmlns:gpc="urn:ietf:params:xml:ns:geopriv-policy-capabilities"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<conditions>
<identity/>
<validity/>
<gpc:civic-loc-condition/>
</conditions>
<actions>
</actions>
<transformations>
<gpc:keep-rules-transformation/>
<gpc:geospatial-loc-transformation>
<gpc:lat-resolution/>
<gpc:lon-resolution/>
</gpc:geospatial-loc-transformation>
</transformations>
</policy-capabilities>
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6. Security Considerations
This specification does not introduce any new security considerations
beyond those discussed in [I-D.ietf-simple-common-policy-caps].
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7. IANA Considerations
This section registers a new XML namespace and a new XML schema with
IANA.
7.1. Namespace Registration
URI: urn:ietf:params:xml:ns:geopriv-policy-capabilities
Registrant Contact: IETF Geopriv Working Group, Christian Guenther
(christian.guenther@siemens.com), Hannes Tschofenig
(hannes.tschofenig@siemens.com).
XML:
BEGIN
<?xml version="1.0"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML Basic 1.0//EN"
"http://www.w3.org/TR/xhtml-basic/xhtml-basic10.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type"
content="text/html;charset=iso-8859-1"/>
<title>Geopriv Policy Capabilities</title>
</head>
<body>
<h1>Namespace for Geopriv Policy Capabilities</h1>
<h2>urn:ietf:params:xml:ns:geopriv-policy-capabilities</h2>
<p>See <a href="[[[URL of published RFC]]]">RFCXXXX</a>.</p>
</body>
</html>
END
7.2. Geopriv Policy Capabilities Schema Registration
URI: Please assign.
Registrant Contact: IETF Geopriv Working Group, Christian Guenther
(christian.guenther@siemens.com), Hannes Tschofenig
(hannes.tschofenig@siemens.com).
XML: The XML schema to be registered is contained in section
Section 4. Its first line is
<xs:schema
and its last line is
</xs:schema>
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8. Acknowledgments
The authors would like to thank Jonathan Rosenberg whose Presence
Policy Capabilities document [I-D.ietf-simple-pres-policy-caps]
served as template for this document.
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9. References
9.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", March 1997.
[RFC2778] Day, M., Rosenberg, J., and H. Sugano, "A Model for
Presence and Instant Messaging", February 2000.
[RFC3688] Mealling, M., "The IETF XML Registry", January 2004.
9.2. Informative References
[I-D.ietf-geopriv-common-policy]
Schulzrinne, H., "Common Policy: An XML Document Format
for Expressing Privacy Preferences",
draft-ietf-geopriv-common-policy-10 (work in progress),
May 2006.
[I-D.ietf-geopriv-policy]
Schulzrinne, H., "A Document Format for Expressing Privacy
Preferences for Location Information",
draft-ietf-geopriv-policy-08 (work in progress),
February 2006.
[I-D.ietf-simple-common-policy-caps]
Rosenberg, J., "An Extensible Markup Language (XML)
Representation for Expressing Policy Capabilities",
draft-ietf-simple-common-policy-caps-00 (work in
progress), July 2005.
[I-D.ietf-simple-pres-policy-caps]
Rosenberg, J., "An Extensible Markup Language (XML)
Representation for Expressing Presence Policy
Capabilities", draft-ietf-simple-pres-policy-caps-00 (work
in progress), July 2005.
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Authors' Addresses
Christian Guenther
Siemens
Otto-Hahn-Ring 6
Munich, Bavaria 81739
Germany
Email: christian.guenther@siemens.com
Hannes Tschofenig
Siemens
Otto-Hahn-Ring 6
Munich, Bavaria 81739
Germany
Email: hannes.tschofenig@siemens.com
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