xacml-policies.examples.example-repository-policies.apia-tighten-defaults.apia-restrict-all-methods.deny-apia-to-ldap-group.xml Maven / Gradle / Ivy

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The Fedora Client is a Java Library that allows API access to a Fedora Repository. The client is typically one part of a full Fedora installation.
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<?xml version="1.0" encoding="UTF-8"?>
<Policy xmlns="urn:oasis:names:tc:xacml:1.0:policy" PolicyId="deny-apia-to-ldap-group" RuleCombiningAlgId="urn:oasis:names:tc:xacml:1.0:rule-combining-algorithm:first-applicable" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xacml:1.0:policy
http://www.fedora.info/definitions/1/0/api/cs-xacml-schema-policy-01.xsd">
	<!-- *********************************************************************************************************************************************************-->
	<!--  This policy will deny access to all API-A methods to users who are Librarians or Information Technologists -->
	<!--  (as indicated by their LDAP attributes). -->
	<!-- *********************************************************************************************************************************************************-->
	<Description> Deny access to all API-A methods to users who are Librarians or Info Technologists (as indicated by their LDAP attributes).</Description>
	<Target>
		<!-- *********************************************************************************************************************************************************-->
		<!--  This policy is applicable to any Subject.  However, the scope of the Subject is narrowed down in the Rule Condition (below).  -->
		<!-- *********************************************************************************************************************************************************-->
		<Subjects>
			<AnySubject/>
		</Subjects>
		<!-- *********************************************************************************************************************************************************-->
		<!--  This policy is applicable to any Resource (i.e., any digital object)  -->
		<!-- *********************************************************************************************************************************************************-->
		<Resources>
			<AnyResource/>
		</Resources>
		<!-- *********************************************************************************************************************************************************-->
		<!--  This policy is applicable ONLY to actions (operations) in the Fedora Access Service (i.e., API-A)  -->
		<!--  Note that the ActionAttributeDesignator element specifies the concept of a service interface in Fedora -->
		<!--  via the action identifier of urn:fedora:names:fedora:2.1:action:api.  The API-A service interface (as target for this policy) -->
		<!--  is specified by the AttributeValue of urn:fedora:names:fedora:2.1:action:api-a. -->
		<!-- *********************************************************************************************************************************************************-->
		<Actions>
			<Action>
				<ActionMatch MatchId="urn:oasis:names:tc:xacml:1.0:function:string-equal">
					<AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">urn:fedora:names:fedora:2.1:action:api-a</AttributeValue>
					<ActionAttributeDesignator DataType="http://www.w3.org/2001/XMLSchema#string" AttributeId="urn:fedora:names:fedora:2.1:action:api"/>
				</ActionMatch>
			</Action>
		</Actions>
	</Target>
	<!-- *********************************************************************************************************************************************************-->
	<!-- Rule 1: This Rule will DENY access to users who are members of a certain group.  The rule sets up a condition under which -->
	<!-- denial should occur.  A Condition element wraps the specification of the SubjectAttributeDesignator, which is where an -->
	<!-- LDAP subject attribute (ou) for this rule is specified.  The Condition element specifies the URN of an XACML-defined function -->
	<!-- (string-at-least-one-member-of)  that wraps the SubjectAttributeDesignator to indicate the that there are -->
	<!-- multiple string values for the LDAP attribute that will result in denial.   -->
	<!-- *********************************************************************************************************************************************************-->
	<!-- BOTTOM LINE:  -->
	<!-- DENY access to API-A to users whose LDAP attribute (ou) has the value of 'Lb-Info Technology' or 'Lb-Univ Librarian-General. ' -->
	<!-- *********************************************************************************************************************************************************-->
	<Rule RuleId="1" Effect="Deny">
		<Condition FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-at-least-one-member-of">
			<SubjectAttributeDesignator DataType="http://www.w3.org/2001/XMLSchema#string" AttributeId="ou"/>
			<Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-bag">
				<AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">Lb-Info Technology</AttributeValue>
				<AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">Lb-Univ Librarian-General</AttributeValue>
			</Apply>
		</Condition>
	</Rule>
</Policy>