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<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Policy xmlns="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17" PolicyId="urn:com:att:xacml:policy:id:25e12b06-11d5-4895-b2a2-6f6c594de069" Version="1" RuleCombiningAlgId="urn:oasis:names:tc:xacml:3.0:rule-combining-algorithm:permit-unless-deny">
<Description>Policy for frequency limiter.</Description>
<Target>
<AnyOf>
<AllOf>
<Match MatchId="urn:oasis:names:tc:xacml:1.0:function:string-regexp-match">
<!-- <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">.*</AttributeValue>-->
<AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">${clname}</AttributeValue>
<AttributeDesignator Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject" AttributeId="urn:oasis:names:tc:xacml:1.0:clname:clname-id" DataType="http://www.w3.org/2001/XMLSchema#string" MustBePresent="false"/>
</Match>
<!-- <Match MatchId="urn:oasis:names:tc:xacml:1.0:function:string-equal">-->
<Match MatchId="urn:oasis:names:tc:xacml:1.0:function:string-regexp-match">
<AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">${actor}</AttributeValue>
<AttributeDesignator Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject" AttributeId="urn:oasis:names:tc:xacml:1.0:actor:actor-id" DataType="http://www.w3.org/2001/XMLSchema#string" MustBePresent="false"/>
</Match>
<Match MatchId="urn:oasis:names:tc:xacml:1.0:function:string-regexp-match">
<AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">${recipe}</AttributeValue>
<AttributeDesignator Category="urn:oasis:names:tc:xacml:3.0:attribute-category:action" AttributeId="urn:oasis:names:tc:xacml:1.0:operation:operation-id" DataType="http://www.w3.org/2001/XMLSchema#string" MustBePresent="false"/>
</Match>
<Match MatchId="urn:oasis:names:tc:xacml:1.0:function:string-regexp-match">
<AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">${targets}</AttributeValue>
<AttributeDesignator Category="urn:oasis:names:tc:xacml:3.0:attribute-category:resource" AttributeId="urn:oasis:names:tc:xacml:1.0:target:target-id" DataType="http://www.w3.org/2001/XMLSchema#string" MustBePresent="false"/>
</Match>
</AllOf>
</AnyOf>
</Target>
<Rule RuleId="urn:com:att:xacml:rule:id:e1e8c5c0-e2ba-47d5-9289-6c015305ed21" Effect="Deny">
<Description>DENY - only if number of operations performed in the past is larger than the limit and the Guard is active.</Description>
<Condition>
<Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:and">
<VariableReference VariableId="isGuardActive"/>
<VariableReference VariableId="isHistoryGreaterThanLimit"/>
</Apply>
</Condition>
</Rule>
<VariableDefinition VariableId="isGuardActive">
<Apply FunctionId="urn:oasis:names:tc:xacml:2.0:function:time-in-range">
<Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:time-one-and-only">
<AttributeDesignator AttributeId="urn:oasis:names:tc:xacml:1.0:environment:current-time" DataType="http://www.w3.org/2001/XMLSchema#time" Category="urn:oasis:names:tc:xacml:3.0:attribute-category:environment" MustBePresent="false"/>
</Apply>
<AttributeValue DataType="http://www.w3.org/2001/XMLSchema#time">${guardActiveStart}</AttributeValue>
<AttributeValue DataType="http://www.w3.org/2001/XMLSchema#time">${guardActiveEnd}</AttributeValue>
</Apply>
</VariableDefinition>
<VariableDefinition VariableId="isHistoryGreaterThanLimit">
<Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:integer-greater-than-or-equal">
<Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:integer-one-and-only">
<AttributeDesignator Category="urn:oasis:names:tc:xacml:3.0:attribute-category:resource" AttributeId="com:att:research:xacml:test:sql:resource:operations:count" DataType="http://www.w3.org/2001/XMLSchema#integer" Issuer="com:att:research:xacml:guard:historydb:tw:${twValue}:${twUnits}" MustBePresent="false"/>
</Apply>
<AttributeValue DataType="http://www.w3.org/2001/XMLSchema#integer">${limit}</AttributeValue>
</Apply>
</VariableDefinition>
</Policy>
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