6

我正在编写一个套接字服务器（没有 Web 应用程序！）应用程序，并希望使用基于方法的安全性来处理我的 ACL 需求。我遵循了一个小教程，我通过示例找到了 Spring Security

到目前为止我配置：

<security:global-method-security pre-post-annotations="enabled">
    <security:expression-handler ref="expressionHandler" />
</security:global-method-security>
<bean id="expressionHandler" class="org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler">
    <property name="permissionEvaluator">
        <bean id="permissionEvaluator" class="myPermissionEvaluator" />
    </property>
</bean>

<security:authentication-manager id="authenticationmanager">
    <security:authentication-provider ref="authenticationprovider" />
</security:authentication-manager>
<bean id="authenticationprovider" class="myAuthenticationProvider" />

使用服务 bean：

@Named
public class ChannelService {
    @PreAuthorize("isAuthenticated() and hasPermission(#channel, 'CHANNEL_WRITE')")
    public void writeMessage(Channel channel, String message) { ... }
}

一切都编译，应用程序启动并正常工作，但没有访问控制。我的调试日志显示我的 Evaluator 从未被调用过。

当我尝试使用注释进行类似操作时，@Secured注释被评估并且访问被拒绝。但简单的基于角色的安全性不足以满足我的要求。

EDIT 做了更多测试：当我只配置secure-annotations="enabled" 时，基于角色的安全工作。在 ADDITION 中配置 pre-post-annotations="enabled" 时，既不保护也不预授权作品。当我只配置前后注释时，它仍然不起作用。

编辑2

更多测试：只有secure_annotations="enabled"，只要我激活pre-post-annotations，对我的channelservice的调用就会通过Cglib2AopProxy，调用直接在channelservice中。没有拦截器，没有代理，什么都没有。

我有点绝望了……

编辑3

我在这里调试记录了我的测试运行是 spring-security 的一部分

只有安全注释=“启用”

2012-04-12 13:36:46,171 INFO  [main] o.s.s.c.SpringSecurityCoreVersion - You are running with Spring Security Core 3.1.0.RELEASE
2012-04-12 13:36:46,174 INFO  [main] o.s.s.c.SecurityNamespaceHandler - Spring Security 'config' module version is 3.1.0.RELEASE
2012-04-12 13:36:49,042 DEBUG [main] o.s.s.a.m.DelegatingMethodSecurityMetadataSource - Caching method [CacheKey[mystuff.UserService; public void mystuff.UserService.serverBan(java.lang.String,mystuff.models.User,org.joda.time.DateTime)]] with attributes [user]
2012-04-12 13:36:49,138 DEBUG [main] o.s.s.a.i.a.MethodSecurityInterceptor - Validated configuration attributes
2012-04-12 13:36:49,221 DEBUG [main] o.s.s.a.m.DelegatingMethodSecurityMetadataSource - Caching method [CacheKey[mystuff.ChannelService; public void mystuff.ChannelService.writeMessage(mystuff.models.Channel,java.lang.String)]] with attributes [blubb]
2012-04-12 13:36:51,159 DEBUG [main] o.s.s.a.ProviderManager - Authentication attempt using mystuff.GlobalchatAuthenticationProvider
2012-04-12 13:36:56,166 DEBUG [Timer-1] o.s.s.a.ProviderManager - Authentication attempt using mystuff.GlobalchatAuthenticationProvider
2012-04-12 13:36:56,183 DEBUG [Timer-1] o.s.s.a.i.a.MethodSecurityInterceptor - Secure object: ReflectiveMethodInvocation: public void mystuff.ChannelService.writeMessage(mystuff.models.Channel,java.lang.String); target is of class [mystuff.ChannelService]; Attributes: [blubb]
2012-04-12 13:36:56,184 DEBUG [Timer-1] o.s.s.a.i.a.MethodSecurityInterceptor - Previously Authenticated: org.springframework.security.authentication.UsernamePasswordAuthenticationToken@312e8aef: Principal: mystuff.UserId@ced1752b; Credentials: [PROTECTED]; Authenticated: true; Details: null; Not granted any authorities
Exception in thread "Timer-1" org.springframework.security.access.AccessDeniedException: Access is denied
    at org.springframework.security.access.vote.AbstractAccessDecisionManager.checkAllowIfAllAbstainDecisions(AbstractAccessDecisionManager.java:70)
    at org.springframework.security.access.vote.AffirmativeBased.decide(AffirmativeBased.java:88)
    at org.springframework.security.access.intercept.AbstractSecurityInterceptor.beforeInvocation(AbstractSecurityInterceptor.java:205)
    at org.springframework.security.access.intercept.aopalliance.MethodSecurityInterceptor.invoke(MethodSecurityInterceptor.java:59)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)
    at mystuff.ChannelService$$EnhancerByCGLIB$$3ad5e57f.writeMessage(<generated>)
    at mystuff.run(DataGenerator.java:109)
    at java.util.TimerThread.mainLoop(Timer.java:512)
    at java.util.TimerThread.run(Timer.java:462)
2012-04-12 13:36:56,185 DEBUG [Timer-1] o.s.s.access.vote.AffirmativeBased - Voter: org.springframework.security.access.vote.RoleVoter@1cfe174, returned: 0
2012-04-12 13:36:56,185 DEBUG [Timer-1] o.s.s.access.vote.AffirmativeBased - Voter: org.springframework.security.access.vote.AuthenticatedVoter@da89a7, returned: 0

使用 pre-post-annotations="enabled"

2012-04-12 13:39:54,926 INFO  [main] o.s.s.c.SpringSecurityCoreVersion - You are running with Spring Security Core 3.1.0.RELEASE
2012-04-12 13:39:54,929 INFO  [main] o.s.s.c.SecurityNamespaceHandler - Spring Security 'config' module version is 3.1.0.RELEASE
2012-04-12 13:39:54,989 INFO  [main] o.s.s.c.m.GlobalMethodSecurityBeanDefinitionParser - Using bean 'expressionHandler' as method ExpressionHandler implementation
2012-04-12 13:39:59,812 DEBUG [main] o.s.s.a.ProviderManager - Authentication attempt mystuff.GlobalchatAuthenticationProvider
2012-04-12 13:39:59,850 DEBUG [main] o.s.s.a.i.a.MethodSecurityInterceptor - Validated configuration attributes

据我了解，这个日志输出 spring 没有意识到我的 bean 需要被代理，所以它们不是，所以我没有得到安全性。

编辑4

我调试记录了完整的 sprint 启动...（那是一个大日志），在那里我发现：

2012-04-12 14:40:41,385 INFO [main] o.s.c.s.ClassPathXmlApplicationContext - Bean 'channelService' of type [class mystuff.ChannelService] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)

有没有办法找出原因？因为据我了解。因为@preauthorize bean 应该是合格的。只有secure-annotations="enabled" 我得到一个后处理日志。

4

2 回答 2

5

这个配置对我来说就像预期的那样工作：

<bean id="securityExpressionHandler"
    class="org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler" /> 

<bean id="preInvocationAdvice"
    class="org.springframework.security.access.expression.method.ExpressionBasedPreInvocationAdvice"
    p:expressionHandler-ref="securityExpressionHandler" />

<util:list id="decisionVoters">
    <bean class="org.springframework.security.access.vote.AuthenticatedVoter" />
    <bean class="org.springframework.security.access.vote.RoleVoter" />
    <bean class="org.springframework.security.access.prepost.PreInvocationAuthorizationAdviceVoter"
        c:pre-ref="preInvocationAdvice" />
</util:list>

<bean id="accessDecisionManager"
    class="org.springframework.security.access.vote.UnanimousBased"
    c:decisionVoters-ref="decisionVoters" />

<sec:global-method-security
    authentication-manager-ref="authenticationManager"
    access-decision-manager-ref="accessDecisionManager"
    pre-post-annotations="enabled" />

我收到了日志消息：

WARN  org.springframework.security.access.expression.DenyAllPermissionEvaluator - 
    Denying user jack permission 'CHANNEL_WRITE' on object Channel[ name=null ]

还有一个例外：

org.springframework.security.access.AccessDeniedException: Access is denied

从一个简单的测试：

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:META-INF/spring/application-context.xml")
public class SpringSecurityPrePostTest {

    @Autowired
    ChannelService channelService;

    @Test
    public void shouldSecureService() throws Exception {
        Authentication authentication = new UsernamePasswordAuthenticationToken("jack", "sparrow");
        SecurityContext securityContext = SecurityContextHolder.getContext();
        securityContext.setAuthentication(authentication);

        channelService.writeMessage(new Channel(), "test");
    }
}

我做的不同的一件事是在服务和 JDK 代理上使用接口而不是 cglib：

public interface ChannelService {

    void writeMessage(Channel channel, String message);
}

和：

@Component
public class ChannelServiceImpl implements ChannelService {

    private static final Logger LOG = LoggerFactory.getLogger(ChannelServiceImpl.class);

    @Override
    @PreAuthorize("isAuthenticated() and hasPermission(#channel, 'CHANNEL_WRITE')")
    public void writeMessage(Channel channel, String message) {
        LOG.info("Writing message {} to: {}" , message, channel);
    }

}

更新1：

通过这个简化的配置，我得到了相同的结果：

<bean id="securityExpressionHandler"
    class="org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler" /> 

<sec:global-method-security
    authentication-manager-ref="authenticationManager"
    pre-post-annotations="enabled">
    <sec:expression-handler ref="securityExpressionHandler" />
</sec:global-method-security>

更新2：

来自 Edit4 的调试消息表明它channelService可能根本没有代理 bean，因为它被归类为not eligible for auto-proxying. 这个问题回答了类似的问题——尽量不要使用@Autowired或任何其他基于BeanPostProcessors设置涉及安全检查的 bean 的机制（即myPermissionEvaluator）。

更新3：

您不能在负责安全检查的 bean 中使用安全资源（即服务）！这会创建一个依赖循环，并且是您的配置中的错误。您必须使用情人级别访问（即 DAO）来检查权限，任何不安全的东西！使用安全资源实施安全检查不是您想要做的。

If despite using not secured resources with @Autowired things don't work as expected, try using old-school XML confiuration style for all beans involved in security checks. Also remember that <context:component-scan /> is in fact a BeanDefinitionRegistryPostProcessor and introduces the scanned beans into the BeanFactory after all the ones declared in XML are already there.

于 2012-04-12T20:26:13.000 回答
-1

它可以工作，确保你<sec:global-method-security pre-post-annotations="enabled"/>在你的spring servlet中有（即你可能有你的<mvc:annotation-driven/>）

“秒”来自 xmlns:sec="http://www.springframework.org/schema/security"

于 2012-04-11T17:15:08.057 回答