Spring Security SAML 插件 - 未配置异常托管服务提供商

java spring spring-security spring-saml

2022-09-02 22:19:11

我正在尝试使用Spring Security SAML扩展将SAML SSO与Spring Security集成。之前，我成功地运行了一个概念验证：https://github.com/vdenotaris/spring-boot-security-saml-sample。不幸的是，将配置移动到我的项目后，它无法正常工作。

分析日志后，我发现我的应用程序（SP）正在从提供的 URL 正确下载 IdP 元数据。但是，尝试通过在浏览器中尝试 https://localhost:8443/saml/metadata 来下载 SP 的元数据后，将引发以下异常：

javax.servlet.ServletException: Error initializing metadata
at org.springframework.security.saml.metadata.MetadataDisplayFilter.processMetadataDisplay(MetadataDisplayFilter.java:120)
at org.springframework.security.saml.metadata.MetadataDisplayFilter.doFilter(MetadataDisplayFilter.java:88)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:213)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:176)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1645)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:564)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:578)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1111)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:498)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1045)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:98)
at org.eclipse.jetty.server.Server.handle(Server.java:461)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:284)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:244)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:534)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:607)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:536)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.opensaml.saml2.metadata.provider.MetadataProviderException: No hosted service provider is configured and no alias was selected
    at org.springframework.security.saml.context.SAMLContextProviderImpl.populateLocalEntity(SAMLContextProviderImpl.java:311)
    at org.springframework.security.saml.context.SAMLContextProviderImpl.populateLocalContext(SAMLContextProviderImpl.java:216)
    at org.springframework.security.saml.context.SAMLContextProviderImpl.getLocalEntity(SAMLContextProviderImpl.java:107)
    at org.springframework.security.saml.metadata.MetadataDisplayFilter.processMetadataDisplay(MetadataDisplayFilter.java:114)
    ... 24 more

调试后，我无法弄清楚为什么Spring无法找出应用程序的实体ID。我是这样设置的：

// Filter automatically generates default SP metadata
@Bean
public MetadataGenerator metadataGenerator() {
    MetadataGenerator metadataGenerator = new MetadataGenerator();
    metadataGenerator.setEntityId(environment.getRequiredProperty("saml.entity-id"));
    metadataGenerator.setEntityBaseURL("URL is here");
    metadataGenerator.setExtendedMetadata(extendedMetadata());
    metadataGenerator.setIncludeDiscoveryExtension(false);
    metadataGenerator.setKeyManager(keyManager());
    return metadataGenerator;
}

当然，saml.entity-id 属性是从我的配置中正确下载的。整个安全配置都在这里：https://gist.github.com/mc-suchecki/671ecb4d5ae4bae17f81

筛选器的顺序正确 - 元数据生成器筛选器位于 SAML 筛选器之前。我不确定这是否相关 - 我想不是 - 但我的应用程序没有使用Spring Boot - 示例应用程序（配置的来源）是。

提前感谢您的任何帮助。

答案 1

我本周发现了这个问题。过滤器有问题。其中一种方法是创建“samlFilter”，如下所示：

public FilterChainProxy samlFilter() throws Exception {
    List<SecurityFilterChain> chains = new ArrayList<SecurityFilterChain>();
    chains.add(new DefaultSecurityFilterChain(new AntPathRequestMatcher("/saml/login/**"), samlEntryPoint()));
    chains.add(new DefaultSecurityFilterChain(new AntPathRequestMatcher("/saml/logout/**"), samlLogoutFilter()));
    chains.add(new DefaultSecurityFilterChain(new AntPathRequestMatcher("/saml/metadata/**"),
        metadataDisplayFilter()));
    chains.add(new DefaultSecurityFilterChain(new AntPathRequestMatcher("/saml/SSO/**"),
        samlWebSSOProcessingFilter()));
    chains.add(new DefaultSecurityFilterChain(new AntPathRequestMatcher("/saml/SSOHoK/**"),
        samlWebSSOHoKProcessingFilter()));
    chains.add(new DefaultSecurityFilterChain(new AntPathRequestMatcher("/saml/SingleLogout/**"),
        samlLogoutProcessingFilter()));
    chains.add(new DefaultSecurityFilterChain(new AntPathRequestMatcher("/saml/discovery/**"), samlIDPDiscovery()));
    return new FilterChainProxy(chains);
}

之后，另一种方法是为Spring设置整个过滤链，如下所示：

@Override
protected void configure(HttpSecurity http) throws Exception {
    http.httpBasic().authenticationEntryPoint(samlEntryPoint());
    http.csrf().disable();
    http.addFilterBefore(metadataGeneratorFilter(), ChannelProcessingFilter.class)
        .addFilterAfter(samlFilter(), BasicAuthenticationFilter.class);
    http.authorizeRequests().antMatchers("/").permitAll().antMatchers("/error").permitAll()
        .antMatchers("/saml/**").permitAll().anyRequest().authenticated();
    http.logout().logoutSuccessUrl("/");
}

这是完全正确的。但是，当我使用Jetty服务器启动应用程序时，我尝试仅将“samlFilter”连接到应用程序上下文。因此，在“metadataDisplayFilter”之前需要的“metadataGeneratorFilter”根本没有添加到筛选器链中。当我将“samlFilter”更改为“springSecurityFilter”时，一切都开始工作了。这并不容易找到，因为我对码头的非标准使用。

感谢您的帮助！

答案 2

在元数据生成器中，entityId 是一个共享密钥，用于向 IDP 传达应用程序要访问它的信息。在 IDP 端有一个 samlConfiguration，您需要在其中输入相同的 entityId，以使应用程序能够访问 IDP 用户。

<bean id="metadataGeneratorFilter" class="org.springframework.security.saml.metadata.MetadataGeneratorFilter">
<constructor-arg>
    <bean class="org.springframework.security.saml.metadata.MetadataGenerator">              
        <property name="entityId" value="****"/>
        <property name="extendedMetadata">
            <bean class="org.springframework.security.saml.web.MyExtendedMetadata">
                <property name="signMetadata" value="true"/>                        
                <property name="signingKey" value="****"/>
                <property name="encryptionKey" value="****"/>
            </bean>
        </property>
    </bean>
</constructor-arg>