具有多个操作,主题和资源的XACML3策略

时间:2014-01-17 05:19:50

标签: authorization access-control xacml xacml3 xacml2

我是否可以拥有具有多种属性(如操作,主题和资源)的示例XACML3策略?

1 个答案:

答案 0 :(得分:1)

实际上,如果您搜索内部,您可以找到许多XACML 3.0示例策略。 XACML 3.0核心规范还包含示例策略。但是,您可以从this博客中找到大量XACML 3.0示例。此外,还有免费工具和服务器可帮助您创建XACML 3.0策略。例如Axiomatics的WSO2 Identity ServerALFA Plugin等。

让我发布一个从WSO2 Identity Server UI创建的简单策略。此策略是为“foo1”或“foo2”资源编写的。它说,用户“bob1”或“bob2”可以对这个“foo1”或“foo2”资源执行“读取”或“写入”操作。其他所有对“foo1”或“foo2”资源的访问都被拒绝了。

<Policy xmlns="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17" PolicyId="TestPolicy" RuleCombiningAlgId="urn:oasis:names:tc:xacml:1.0:rule-combining-algorithm:first-applicable" Version="1.0">
   <Target>
      <AnyOf>
         <AllOf>
            <Match MatchId="urn:oasis:names:tc:xacml:1.0:function:string-equal">
               <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">foo1</AttributeValue>
               <AttributeDesignator AttributeId="urn:oasis:names:tc:xacml:1.0:resource:resource-id" Category="urn:oasis:names:tc:xacml:3.0:attribute-category:resource" DataType="http://www.w3.org/2001/XMLSchema#string" MustBePresent="true"/>
            </Match>
         </AllOf>
         <AllOf>
            <Match MatchId="urn:oasis:names:tc:xacml:1.0:function:string-equal">
               <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">foo2</AttributeValue>
               <AttributeDesignator AttributeId="urn:oasis:names:tc:xacml:1.0:resource:resource-id" Category="urn:oasis:names:tc:xacml:3.0:attribute-category:resource" DataType="http://www.w3.org/2001/XMLSchema#string" MustBePresent="true"/>
            </Match>
         </AllOf>
      </AnyOf>
   </Target>
   <Rule Effect="Permit" RuleId="Rule-1">
      <Condition>
         <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:and">
            <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-at-least-one-member-of">
               <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-bag">
                  <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">read</AttributeValue>
                  <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">write</AttributeValue>
               </Apply>
               <AttributeDesignator AttributeId="urn:oasis:names:tc:xacml:1.0:action:action-id" Category="urn:oasis:names:tc:xacml:3.0:attribute-category:action" DataType="http://www.w3.org/2001/XMLSchema#string" MustBePresent="true"/>
            </Apply>
            <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-at-least-one-member-of">
               <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-bag">
                  <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">bob1</AttributeValue>
                  <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">bob2</AttributeValue>
               </Apply>
               <AttributeDesignator AttributeId="urn:oasis:names:tc:xacml:1.0:subject:subject-id" Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject" DataType="http://www.w3.org/2001/XMLSchema#string" MustBePresent="true"/>
            </Apply>
         </Apply>
      </Condition>
   </Rule>
   <Rule Effect="Deny" RuleId="Deny-Rule"/>
</Policy>