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社区首页 >问答首页 >AuthZForce PDP的行为与预期不符

AuthZForce PDP的行为与预期不符
EN

Stack Overflow用户
提问于 2017-07-23 01:01:24
回答 1查看 176关注 0票数 2

我已经扩展了一个策略集以包括一个新策略,这意味着我已经向策略中添加了目标,以确保请求以正确的策略为目标。

以下是策略集xacml:

代码语言:javascript
复制
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<PolicySet xmlns="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17"  PolicySetId="P1" Version="1.3" PolicyCombiningAlgId="urn:oasis:names:tc:xacml:3.0:policy-combining-algorithm:deny-overrides">
<Description>CD Governance PolicySet</Description>
<Target/>
<Policy PolicyId="urn:oasis:names:tc:xacml:1.0:date-in:july:policy" RuleCombiningAlgId="urn:oasis:names:tc:xacml:3.0:rule-combining-algorithm:deny-overrides" Version="01">
    <Description>Reject if the Date is July Policy</Description>
    <Target>
        <AnyOf>
            <AllOf>
                <Match MatchId="urn:oasis:names:tc:xacml:1.0:function:string-equal">
                    <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">freezeCheck</AttributeValue>
                    <AttributeDesignator
                        AttributeId="urn:oasis:names:tc:xacml:1.0:date-in:july:target-check"
                        DataType="http://www.w3.org/2001/XMLSchema#string"
                        Category="urn:oasis:names:tc:xacml:1.0:subject-category:resource"
                        MustBePresent="false"
                        />
                </Match>
            </AllOf>
        </AnyOf>
    </Target>
    <Rule RuleId="urn:oasis:names:tc:xacml:1.0:date-not-in:july:rule" Effect="Permit">
     <Condition>
        <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:and">
            <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:not" >
                <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:date-is-in">
                    <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:date-one-and-only">
                        <AttributeDesignator 
                            AttributeId="urn:oasis:names:tc:xacml:1.0:date-in:july:current-date" 
                            DataType="http://www.w3.org/2001/XMLSchema#date" 
                            MustBePresent="true"
                            Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject" />
                    </Apply>
                    <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:date-bag">
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2017-07-01</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-02</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-03</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-04</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-05</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-06</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-07</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-08</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-09</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-10</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-11</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-12</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-13</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-14</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-15</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-16</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-17</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-18</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-19</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-20</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-21</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-22</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-23</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-24</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-25</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-26</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-27</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-28</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-29</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-30</AttributeValue>
                        <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-31</AttributeValue>
                    </Apply>
                </Apply>
            </Apply>
        </Apply>
       </Condition>
    </Rule>
    <Rule RuleId="urn:oasis:names:tc:xacml:1.0:date-in:july:rule" Effect="Deny">
     <Condition>    
        <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:date-is-in">
           <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:date-one-and-only">
              <AttributeDesignator AttributeId="urn:oasis:names:tc:xacml:1.0:date-in:july:current-date" DataType="http://www.w3.org/2001/XMLSchema#date" MustBePresent="true"
                 Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject" />
           </Apply>
           <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:date-bag">
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2017-07-01</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-02</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-03</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-04</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-05</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-06</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-07</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-08</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-09</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-10</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-11</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-12</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-13</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-14</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-15</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-16</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-17</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-18</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-19</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-20</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-21</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-22</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-23</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-24</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-25</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-26</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-27</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-28</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-29</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-30</AttributeValue>
              <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2002-07-31</AttributeValue>
           </Apply>
        </Apply>
     </Condition>
  </Rule>
</Policy>
<Policy PolicyId="urn:oasis:names:tc:xacml:1.0:app-in:prod:policy" RuleCombiningAlgId="urn:oasis:names:tc:xacml:3.0:rule-combining-algorithm:deny-overrides" Version="01">
    <Description>Reject if the Application is not allowed in Production Policy</Description>
    <Target>
        <AnyOf>
            <AllOf>
                <Match MatchId="urn:oasis:names:tc:xacml:1.0:function:string-equal">
                    <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">prod</AttributeValue>
                    <AttributeDesignator
                        AttributeId="urn:oasis:names:tc:xacml:1.0:environment"
                        DataType="http://www.w3.org/2001/XMLSchema#string"
                        Category="urn:oasis:names:tc:xacml:1.0:subject-category:resource"
                        MustBePresent="true"
                        />
                </Match>
            </AllOf>
        </AnyOf>
    </Target>
    <Rule RuleId="urn:oasis:names:tc:xacml:1.0:app-not-in:prod:rule" Effect="Deny">
        <Condition>
            <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:and">
                <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:not" >
                    <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-is-in">
                        <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-one-and-only">
                            <AttributeDesignator 
                                AttributeId="urn:oasis:names:tc:xacml:1.0:production:apps" 
                                DataType="http://www.w3.org/2001/XMLSchema#string" 
                                MustBePresent="true"
                                Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject" />
                        </Apply>
                        <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-bag">
                            <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">CRM</AttributeValue>
                            <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">SAP</AttributeValue>
                            <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">Customer Portal</AttributeValue>
                        </Apply>
                    </Apply>
                </Apply>
            </Apply>
        </Condition>
    </Rule>
    <Rule RuleId="urn:oasis:names:tc:xacml:1.0:app-in:prod:rule" Effect="Permit">
        <Condition>    
            <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-is-in">
                <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-one-and-only">
                    <AttributeDesignator 
                        AttributeId="urn:oasis:names:tc:xacml:1.0:production:apps" 
                        DataType="http://www.w3.org/2001/XMLSchema#string" 
                        MustBePresent="true"
                        Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject" />
                </Apply>
                <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-bag">
                    <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">CRM</AttributeValue>
                    <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">SAP</AttributeValue>
                    <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">Customer Portal</AttributeValue>
                </Apply>
            </Apply>
        </Condition>
    </Rule>
</Policy>
</PolicySet>

因此,当我想要检查第二个策略(是否允许在Prod中使用某个应用程序)时,我会发送如下请求:

代码语言:javascript
复制
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Request xmlns="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17"
 CombinedDecision="false" ReturnPolicyIdList="true">
    <Attributes Category="urn:oasis:names:tc:xacml:1.0:subject-category:resource">
        <Attribute IncludeInResult="false"
                 AttributeId="urn:oasis:names:tc:xacml:1.0:environment">
            <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">prod</AttributeValue>
        </Attribute>
    </Attributes>
    <Attributes Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject">
        <Attribute IncludeInResult="false"
                 AttributeId="urn:oasis:names:tc:xacml:1.0:production:apps">
            <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">SAP1</AttributeValue>
        </Attribute>
    </Attributes>
</Request>

它返回我所期望的结果:

代码语言:javascript
复制
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Response xmlns="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17" xmlns:ns2="http://authzforce.github.io/rest-api-model/xmlns/authz/5" xmlns:ns3="http://www.w3.org/2005/Atom" xmlns:ns4="http://authzforce.github.io/pap-dao-flat-file/xmlns/properties/3.6" xmlns:ns5="http://authzforce.github.io/core/xmlns/pdp/5.0">
    <Result>
        <Decision>Deny</Decision>
        <PolicyIdentifierList>
            <PolicyIdReference Version="01">urn:oasis:names:tc:xacml:1.0:app-in:prod:policy</PolicyIdReference>
            <PolicySetIdReference Version="1.3">P1</PolicySetIdReference>
        </PolicyIdentifierList>
    </Result>
</Response>

到目前为止还不错..。但是当我发送这个的时候:

代码语言:javascript
复制
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Request xmlns="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17"
 CombinedDecision="false" ReturnPolicyIdList="true">
    <Attributes Category="urn:oasis:names:tc:xacml:1.0:subject-category:resource">
        <Attribute IncludeInResult="false"
                 AttributeId="urn:oasis:names:tc:xacml:1.0:date-in:july:target-check">
            <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">freezeCheck</AttributeValue>
        </Attribute>
    </Attributes>
    <Attributes Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject">
        <Attribute IncludeInResult="false"
                 AttributeId="urn:oasis:names:tc:xacml:1.0:date-in:july:current-date">
            <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2017-08-01</AttributeValue>
        </Attribute>
    </Attributes>
</Request>

对于第一个问题,我没有得到类似的响应(但得到了许可),我得到的是:

代码语言:javascript
复制
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Response xmlns="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17" xmlns:ns2="http://authzforce.github.io/rest-api-model/xmlns/authz/5" xmlns:ns3="http://www.w3.org/2005/Atom" xmlns:ns4="http://authzforce.github.io/pap-dao-flat-file/xmlns/properties/3.6" xmlns:ns5="http://authzforce.github.io/core/xmlns/pdp/5.0">
    <Result>
        <Decision>Indeterminate</Decision>
        <Status>
            <StatusCode Value="urn:oasis:names:tc:xacml:1.0:status:missing-attribute"/>
            <StatusMessage>Error evaluating &lt;Target&gt;/&lt;AnyOf&gt;#0</StatusMessage>
        </Status>
        <PolicyIdentifierList>
            <PolicyIdReference Version="01">urn:oasis:names:tc:xacml:1.0:date-in:july:policy</PolicyIdReference>
            <PolicyIdReference Version="01">urn:oasis:names:tc:xacml:1.0:app-in:prod:policy</PolicyIdReference>
            <PolicySetIdReference Version="1.3">P1</PolicySetIdReference>
        </PolicyIdentifierList>
    </Result>
</Response>

现在,您可能认为策略定义不正确,因此我发送了以下内容:

代码语言:javascript
复制
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Request xmlns="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17"
 CombinedDecision="false" ReturnPolicyIdList="true">
    <Attributes Category="urn:oasis:names:tc:xacml:1.0:subject-category:resource">
        <Attribute IncludeInResult="false"
                 AttributeId="urn:oasis:names:tc:xacml:1.0:date-in:july:target-check">
            <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">freezeCheck</AttributeValue>
        </Attribute>
    </Attributes>
    <Attributes Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject">
        <Attribute IncludeInResult="false"
                 AttributeId="urn:oasis:names:tc:xacml:1.0:date-in:july:current-date">
            <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#date">2017-07-01</AttributeValue>
        </Attribute>
    </Attributes>
</Request>

我得到了我所期望的-拒绝,与not Target missing错误:

代码语言:javascript
复制
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Response xmlns="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17" xmlns:ns2="http://authzforce.github.io/rest-api-model/xmlns/authz/5" xmlns:ns3="http://www.w3.org/2005/Atom" xmlns:ns4="http://authzforce.github.io/pap-dao-flat-file/xmlns/properties/3.6" xmlns:ns5="http://authzforce.github.io/core/xmlns/pdp/5.0">
    <Result>
        <Decision>Deny</Decision>
        <PolicyIdentifierList>
            <PolicyIdReference Version="01">urn:oasis:names:tc:xacml:1.0:date-in:july:policy</PolicyIdReference>
            <PolicySetIdReference Version="1.3">P1</PolicySetIdReference>
        </PolicyIdentifierList>
    </Result>
</Response>

那么,为什么PDP会对这一项策略感到困惑(在我看来,这与另一项策略是一样的,当应用程序在策略的列表中时,我会得到correctly....yes的许可)?

为什么它认为目标的属性完全缺失(而不是只有错误的值)?为什么要对condition属性执行此操作?

EN

回答 1

Stack Overflow用户

回答已采纳

发布于 2017-07-23 08:49:41

正如StatusCode/StatusMessage/PolicyIdentifierList所说,您得到一个不确定的决策,因为缺少评估策略urn:oasis:names:tc:xacml:1.0:app-in:prod:policy的目标(的第一个AnyOf )所需的属性。因为在这个目标/任意点中的AttributeDesignator上存在MustBePresent=true,所以如果请求上下文中没有匹配的属性(我假设没有启用属性提供程序),它就被认为是错误的。实际上,在您的第二个请求中,Category="urn:oasis:names:tc:xacml:1.0:subject-category:resource"中没有AttributeId="urn:oasis:names:tc:xacml:1.0:environment"属性。因此,您可以在请求中提供此类属性,也可以根据需要设置MustBePresent=false (或更改AttributeDesignator)。

顺便说一句,请尽可能使用standard identifiers,这样我们在查看您的策略时不会混淆;例如,标准资源类别标识符是urn:oasis:names:tc:xacml:3.0:attribute-category:resource (而不是urn:oasis:names:tc:xacml:1.0:subject-category:resource)。

票数 1
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接:

https://stackoverflow.com/questions/45257114

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