Wso2 XACML-如何获取决策中使用的策略列表？

XACML标准规定，如果请求指定了属性

ReturnPolicyIdList=“true”

，PDP应返回决策中使用的所有完全适用的策略和策略集的列表

我用WSO IS 5.0（最新的service pack）试用过，但它似乎只在少数情况下起作用。这是第一个测试策略：它允许对以

.dcm

结尾的每个文件的user

admin

进行写访问

<Policy xmlns="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17"  PolicyId="PolicyTest" Version="1.0" RuleCombiningAlgId="urn:oasis:names:tc:xacml:3.0:rule-combining-algorithm:permit-overrides">
    <Target></Target>
    <Rule RuleId="Rule1" Effect="Permit">
        <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">^.*.dcm$</AttributeValue>
                        <AttributeDesignator MustBePresent="false" Category="urn:oasis:names:tc:xacml:3.0:attribute-category:resource" AttributeId="urn:oasis:names:tc:xacml:1.0:resource:resource-id" DataType="http://www.w3.org/2001/XMLSchema#string"></AttributeDesignator>
                    </Match>
                </AllOf>
            </AnyOf>
            <AnyOf>
                <AllOf>
                    <Match MatchId="urn:oasis:names:tc:xacml:1.0:function:string-equal">
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">read</AttributeValue>
                        <AttributeDesignator MustBePresent="true" Category="urn:oasis:names:tc:xacml:3.0:attribute-category:action" AttributeId="urn:oasis:names:tc:xacml:1.0:action:action-id" DataType="http://www.w3.org/2001/XMLSchema#string"></AttributeDesignator>
                    </Match>
                </AllOf>
            </AnyOf>
        </Target>
        <Condition>
            <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:any-of">
                <Function FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-equal"></Function>
                    <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">admin</AttributeValue>
                    <AttributeDesignator MustBePresent="false" Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject" AttributeId="urn:oasis:names:tc:xacml:1.0:subject:subject-id" DataType="http://www.w3.org/2001/XMLSchema#string"></AttributeDesignator>
            </Apply>
        </Condition>
    </Rule>
    <Rule RuleId="DefaultRule" Effect="Deny"></Rule>
</Policy>

如果这是PDP中唯一活动的策略，则XACML响应是正确的（允许），并包括用于决策的所有策略的ID列表：

<Response>
    <Result>
        <Decision>Permit</Decision>
        <Status>
            <StatusCode Value="urn:oasis:names:tc:xacml:1.0:status:ok"/>
        </Status>
        <PolicyIdentifierList>
            <PolicyIdReference>PolicyTest</PolicyIdReference>
        </PolicyIdentifierList>
    </Result>
</Response>

第二个错误：

TID[-1234] [IS] [2015-07-03 12:41:34,558] ERROR {org.wso2.carbon.identity.entitlement.ui.client.EntitlementServiceClient} - Error occurred while policy evaluation

我怎样才能让它工作？是否有任何设置需要更改，或者这是一个bug

---

谢谢大家!

根据XACML标准，如果您将ReturnPolicyIdList设置为true，则PDP应回复请求中使用的策略和策略集标识符列表

下面是一个XACML 3.0请求示例（它是空的，即没有任何属性）

下面是一个示例响应

<xacml-ctx:Response xmlns:xacml-ctx="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17">
  <xacml-ctx:Result>
    <xacml-ctx:Decision>Permit</xacml-ctx:Decision>
    <xacml-ctx:Status>
      <xacml-ctx:StatusCode Value="urn:oasis:names:tc:xacml:1.0:status:ok"/>
    </xacml-ctx:Status>
    <xacml-ctx:PolicyIdentifierList>
      <xacml-ctx:PolicyIdReference Version="1.0">http://www.axiomatics.com/automatic-unique-id/f8d86878-d458-472a-968d-1fd6c9655669</xacml-ctx:PolicyIdReference>
      <xacml-ctx:PolicySetIdReference Version="1.0">http://www.axiomatics.com/automatic-unique-id/21e6e472-d363-4ea9-990d-3fa03512b747</xacml-ctx:PolicySetIdReference>
    </xacml-ctx:PolicyIdentifierList>
  </xacml-ctx:Result>
</xacml-ctx:Response>

许可证
http://www.axiomatics.com/automatic-unique-id/f8d86878-d458-472a-968d-1fd6c9655669
http://www.axiomatics.com/automatic-unique-id/21e6e472-d363-4ea9-990d-3fa03512b747

响应显然包含

PolicyIdentifierList

元素中的策略标识符列表

---

我在电脑上测试过，效果很好。WSO2只是一个部分实现，因此它要么是缺少的功能，要么是一个bug。

您可以发布其他策略吗？我猜您在上面尝试了相同的XACML请求？您好，我在问题中添加了第二个策略的代码。要求是一样的。谢谢。我在WSO2的《吉拉：坦克你大卫》上发表了一篇文章，我认为这是一个bug。我将在WSO2的Jira上发表一篇文章。仅供参考，Axiomatics网站现在已关闭。我们将我们的漏洞保留在网站上：-）

TID[-1234] [IS] [2015-07-03 12:41:34,550] ERROR {org.apache.axis2.rpc.receivers.RPCMessageReceiver} - Exception occurred while trying to invoke service method getDecision
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)

TID[-1234] [IS] [2015-07-03 12:41:34,558] ERROR {org.wso2.carbon.identity.entitlement.ui.client.EntitlementServiceClient} - Error occurred while policy evaluation

<xacml-ctx:Request ReturnPolicyIdList="true" CombinedDecision="false" 
xmlns:xacml-ctx="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17">
   <xacml-ctx:Attributes Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject" >
   </xacml-ctx:Attributes>
   <xacml-ctx:Attributes Category="urn:oasis:names:tc:xacml:3.0:attribute-category:environment" >
   </xacml-ctx:Attributes>
   <xacml-ctx:Attributes Category="urn:oasis:names:tc:xacml:3.0:attribute-category:action" >
   </xacml-ctx:Attributes>
   <xacml-ctx:Attributes Category="urn:oasis:names:tc:xacml:3.0:attribute-category:resource" >
   </xacml-ctx:Attributes>
</xacml-ctx:Request>

<xacml-ctx:Response xmlns:xacml-ctx="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17">
  <xacml-ctx:Result>
    <xacml-ctx:Decision>Permit</xacml-ctx:Decision>
    <xacml-ctx:Status>
      <xacml-ctx:StatusCode Value="urn:oasis:names:tc:xacml:1.0:status:ok"/>
    </xacml-ctx:Status>
    <xacml-ctx:PolicyIdentifierList>
      <xacml-ctx:PolicyIdReference Version="1.0">http://www.axiomatics.com/automatic-unique-id/f8d86878-d458-472a-968d-1fd6c9655669</xacml-ctx:PolicyIdReference>
      <xacml-ctx:PolicySetIdReference Version="1.0">http://www.axiomatics.com/automatic-unique-id/21e6e472-d363-4ea9-990d-3fa03512b747</xacml-ctx:PolicySetIdReference>
    </xacml-ctx:PolicyIdentifierList>
  </xacml-ctx:Result>
</xacml-ctx:Response>