WSO2 Identity Server - PAP 尝试下的 XACML V.3 策略集问题

Question

我想添加一个策略集，以便运行使用目标按顺序设置一系列策略，该目标根据输入字段定义给定策略是否适用 "resource"。为了开始测试，我编写了一个包含一个策略的 policySet。

WSO2 PAP 的评估失败显示 "NotApplicable" 结果，而我希望收到 "Permit"。

这里是在 XML 中创建的名为 "cfatest0" 的策略：

<!--This file was generated by the ALFA Plugin for Eclipse from Axiomatics AB (http://www.axiomatics.com).  Any modification to this file will be lost upon recompilation of the source ALFA file-->
   <xacml3:Policy xmlns:xacml3="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17"  PolicyId="cfatest0" RuleCombiningAlgId="urn:oasis:names:tc:xacml:3.0:rule-combining-algorithm:deny-overrides" Version="1.0">
      <xacml3:Description></xacml3:Description>
      <xacml3:PolicyDefaults>
         <xacml3:XPathVersion>http://www.w3.org/TR/1999/REC-xpath-19991116</xacml3:XPathVersion>
      </xacml3:PolicyDefaults>
      <xacml3:Target>
         <xacml3:AnyOf>
            <xacml3:AllOf>
               <xacml3:Match MatchId="urn:oasis:names:tc:xacml:1.0:function:string-equal">
                  <xacml3:AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">TPS_AE_REST_Policy</xacml3:AttributeValue>
                  <xacml3:AttributeDesignator AttributeId="urn:oasis:names:tc:xacml:1.0:resource:resource-id" DataType="http://www.w3.org/2001/XMLSchema#string" Category="urn:oasis:names:tc:xacml:3.0:attribute-category:resource" MustBePresent="false"></xacml3:AttributeDesignator>
               </xacml3:Match>
            </xacml3:AllOf>
         </xacml3:AnyOf>
      </xacml3:Target>
      <xacml3:Rule Effect="Permit" RuleId="http://axiomatics.com/alfa/identifier/com.red.XACML.permitAll">
         <xacml3:Description></xacml3:Description>
         <xacml3:Target></xacml3:Target>
      </xacml3:Rule>
      <xacml3:Rule Effect="Deny" RuleId="http://axiomatics.com/alfa/identifier/com.red.XACML.checkId">
         <xacml3:Description></xacml3:Description>
         <xacml3:Target></xacml3:Target>
         <xacml3:Condition>
            <xacml3:Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:not">
               <xacml3:Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:any-of">
                  <xacml3:Function FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-equal"></xacml3:Function>
                  <xacml3:AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">claudef@br.red.com</xacml3:AttributeValue>
                  <xacml3:AttributeDesignator AttributeId="urn:oasis:names:tc:xacml:1.0:subject:subject-id" DataType="http://www.w3.org/2001/XMLSchema#string" Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject" MustBePresent="false"></xacml3:AttributeDesignator>
               </xacml3:Apply>
            </xacml3:Apply>
         </xacml3:Condition>
         <xacml3:ObligationExpressions>
            <xacml3:ObligationExpression ObligationId="obligation.displayAttributes" FulfillOn="Deny">
               <xacml3:AttributeAssignmentExpression AttributeId="urn:oasis:names:tc:xacml:3.0:example:attribute:text" Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject">
                  <xacml3:AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">Access denied due to invalid UserID</xacml3:AttributeValue>
               </xacml3:AttributeAssignmentExpression>
            </xacml3:ObligationExpression>
         </xacml3:ObligationExpressions>
      </xacml3:Rule>
      <xacml3:AdviceExpressions>
         <xacml3:AdviceExpression AdviceId="advice.displayAttributes" AppliesTo="Deny">
            <xacml3:AttributeAssignmentExpression AttributeId="urn:oasis:names:tc:xacml:3.0:example:attribute:text" Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject">
               <xacml3:AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">Valid subjectId</xacml3:AttributeValue>
            </xacml3:AttributeAssignmentExpression>
         </xacml3:AdviceExpression>
         <xacml3:AdviceExpression AdviceId="advice.displayAttributes" AppliesTo="Permit">
            <xacml3:AttributeAssignmentExpression AttributeId="urn:oasis:names:tc:xacml:3.0:example:attribute:text" Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject">
               <xacml3:AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">Valid subjectId</xacml3:AttributeValue>
            </xacml3:AttributeAssignmentExpression>
         </xacml3:AdviceExpression>
      </xacml3:AdviceExpressions>
   </xacml3:Policy>

这里是在 XML 中创建的名为 cfapolicyset1 的策略集：

<!--This file was generated by the ALFA Plugin for Eclipse from Axiomatics AB (http://www.axiomatics.com).  Any modification to this file will be lost upon recompilation of the source ALFA file-->
   <xacml3:PolicySet xmlns:xacml3="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17"  PolicySetId="cfapolicyset1" PolicyCombiningAlgId="urn:oasis:names:tc:xacml:3.0:policy-combining-algorithm:permit-overrides" Version="1.0">
      <xacml3:Description></xacml3:Description>
      <xacml3:PolicySetDefaults>
         <xacml3:XPathVersion>http://www.w3.org/TR/1999/REC-xpath-19991116</xacml3:XPathVersion>
      </xacml3:PolicySetDefaults>
      <xacml3:Target>
         <xacml3:AnyOf>
            <xacml3:AllOf>
               <xacml3:Match MatchId="urn:oasis:names:tc:xacml:1.0:function:string-equal">
                  <xacml3:AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">TPS_AE_REST_Policy</xacml3:AttributeValue>
                  <xacml3:AttributeDesignator AttributeId="urn:oasis:names:tc:xacml:1.0:resource:resource-id" DataType="http://www.w3.org/2001/XMLSchema#string" Category="urn:oasis:names:tc:xacml:3.0:attribute-category:resource" MustBePresent="false"></xacml3:AttributeDesignator>
               </xacml3:Match>
            </xacml3:AllOf>
         </xacml3:AnyOf>
      </xacml3:Target>
      <xacml3:PolicyIdReference>cfatest0</xacml3:PolicyIdReference>
   </xacml3:PolicySet>

PAP下WSO2"Try-It"工具生成的请求如下：

<Request xmlns="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17" CombinedDecision="false" ReturnPolicyIdList="false">
    <Attributes Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject">
        <Attribute AttributeId="urn:oasis:names:tc:xacml:1.0:subject:subject-id" IncludeInResult="false">
            <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">claudef@br.red.com</AttributeValue>
        </Attribute>
    </Attributes>
    <Attributes Category="urn:oasis:names:tc:xacml:3.0:attribute-category:resource">
        <Attribute AttributeId="urn:oasis:names:tc:xacml:1.0:resource:resource-id" IncludeInResult="false">
            <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">TPS_AE_REST_Policy</AttributeValue>
        </Attribute>
    </Attributes>
</Request>

决定是：不适用

我是否遗漏了向 PolicySet 发送请求的方式？使用 WSO2 高级策略编辑器时，我在响应中遇到相同的错误。在测试 PAP "Try-It" 工具中隔离的策略时，我收到正确的值，对于此策略是："Permit"。

Answer 1

我在 Axiomatics Policy Administration Point 中尝试了您的请求和策略，我得到了想要的响应，即 Permit + Advice.

会不会是你忘记加载 WSO2IS 里面的策略了？

WSO2 Identity Server - PAP 尝试下的 XACML V.3 策略集问题

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