KeyCloak NullPointer Exception when evaluating response from SAML integration

Question

I am running a keycloak (version 11.01) and have added an SAML 2.0 identity provider. It seems that all handshakes and logins are working, but after that step I get a NullPointerException (if I've interpreted the error logs correctly)

00:27:04,170 ERROR [org.keycloak.services.error.KeycloakErrorHandler] (default task-5) Uncaught server error: org.keycloak.broker.provider.IdentityBrokerException: Could not process response from SAML identity provider.
at org.keycloak.broker.saml.SAMLEndpoint$Binding.handleLoginResponse(SAMLEndpoint.java:444)
at org.keycloak.broker.saml.SAMLEndpoint$Binding.handleSamlResponse(SAMLEndpoint.java:479)
at org.keycloak.broker.saml.SAMLEndpoint$Binding.execute(SAMLEndpoint.java:237)
at org.keycloak.broker.saml.SAMLEndpoint.postBinding(SAMLEndpoint.java:157)
.
.
.
Caused by: java.lang.NullPointerException
at java.util.regex.Matcher.getTextLength(Matcher.java:1283)
at java.util.regex.Matcher.reset(Matcher.java:309)
at java.util.regex.Matcher.<init>(Matcher.java:229)
at java.util.regex.Pattern.matcher(Pattern.java:1093)
at java.util.regex.Pattern.split(Pattern.java:1206)
at org.keycloak.broker.provider.util.IdentityBrokerState.encoded(IdentityBrokerState.java:41)
at org.keycloak.services.resources.IdentityBrokerService.parseEncodedSessionCode(IdentityBrokerService.java:980)
at org.keycloak.services.resources.IdentityBrokerService.authenticated(IdentityBrokerService.java:490)
at org.keycloak.broker.saml.SAMLEndpoint$Binding.handleLoginResponse(SAMLEndpoint.java:440)
... 63 more

Unfortunately it seems the stacktrace is cut after this and I don't see much more details (currently running with TRACE logging)

I've not set up any mappers as I hoped to get the attributes transparantly (with the name they have in the saml-xml)

Has anyone experienced this before or know of a way to get more details? Is there any unit-test I could do towards the source code of keycloak to verify this?

Thanks!

Answer 1

此处相同 Keycloak 11.0.2 SAML 响应处理时出现 NullPointerException

        at  org.keycloak.keycloak-services@12.0.3//org.keycloak.broker.saml.SAMLEndpoint$Binding.handleLoginResponse(SAMLEndpoint.java:512)
        at  org.keycloak.keycloak-services@12.0.3//org.keycloak.broker.saml.SAMLEndpoint$Binding.handleSamlResponse(SAMLEndpoint.java:559)
        at  org.keycloak.keycloak-services@12.0.3//org.keycloak.broker.saml.SAMLEndpoint$Binding.execute(SAMLEndpoint.java:259)
        at  org.keycloak.keycloak-services@12.0.3//org.keycloak.broker.saml.SAMLEndpoint.postBinding(SAMLEndpoint.java:174)
        at  java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at  java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at  java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at  java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:138)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.ResourceMethodInvoker.internalInvokeOnTarget(ResourceMethodInvoker.java:543)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTargetAfterFilter(ResourceMethodInvoker.java:432)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.ResourceMethodInvoker.lambda$invokeOnTarget$0(ResourceMethodInvoker.java:393)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.interception.PreMatchContainerRequestContext.filter(PreMatchContainerRequestContext.java:358)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:395)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:364)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:150)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:110)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:141)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:104)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:440)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.SynchronousDispatcher.lambda$invoke$4(SynchronousDispatcher.java:229)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.SynchronousDispatcher.lambda$preprocess$0(SynchronousDispatcher.java:135)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.interception.PreMatchContainerRequestContext.filter(PreMatchContainerRequestContext.java:358)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.SynchronousDispatcher.preprocess(SynchronousDispatcher.java:138)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:215)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:245)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:61)
        at  org.jboss.resteasy.resteasy-jaxrs@3.13.2.Final//org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)
        at  javax.servlet.api@2.0.0.Final//javax.servlet.http.HttpServlet.service(HttpServlet.java:590)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)
        at  org.keycloak.keycloak-wildfly-extensions@12.0.3//org.keycloak.provider.wildfly.WildFlyRequestFilter.lambda$doFilter$0(WildFlyRequestFilter.java:41)
        at  org.keycloak.keycloak-services@12.0.3//org.keycloak.services.filters.AbstractRequestFilter.filter(AbstractRequestFilter.java:43)
        at  org.keycloak.keycloak-wildfly-extensions@12.0.3//org.keycloak.provider.wildfly.WildFlyRequestFilter.doFilter(WildFlyRequestFilter.java:39)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
        at  org.wildfly.extension.undertow@21.0.2.Final//org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandle
        at  io.undertow.core@2.2.2.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.RedirectDirHandler.handleRequest(RedirectDirHandler.java:68)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:132)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
        at  io.undertow.core@2.2.2.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
        at  io.undertow.core@2.2.2.Final//io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.
        at  io.undertow.core@2.2.2.Final//io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
        at  io.undertow.core@2.2.2.Final//io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
        at  io.undertow.core@2.2.2.Final//io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43
        at  io.undertow.core@2.2.2.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
        at  org.wildfly.extension.undertow@21.0.2.Final//org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
        at  io.undertow.core@2.2.2.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
        at  org.wildfly.extension.undertow@21.0.2.Final//org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest(GlobalRequestControllerHandler.ja
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.SendErrorPageHandler.handleRequest(SendErrorPageHandler.java:52)
        at  io.undertow.core@2.2.2.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:269)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:78)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:133)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:130)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
        at  org.wildfly.extension.undertow@21.0.2.Final//org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupActio
        at  org.wildfly.extension.undertow@21.0.2.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(Undert
        at  org.wildfly.extension.undertow@21.0.2.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(Undert
        at  org.wildfly.extension.undertow@21.0.2.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(Undert
        at  org.wildfly.extension.undertow@21.0.2.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(Undert
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:249)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:78)
        at  io.undertow.servlet@2.2.2.Final//io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:99)
        at  io.undertow.core@2.2.2.Final//io.undertow.server.Connectors.executeRootHandler(Connectors.java:387)
        at  io.undertow.core@2.2.2.Final//io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:841)
        at  org.jboss.threads@2.4.0.Final//org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
        at  org.jboss.threads@2.4.0.Final//org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1990)
        at  org.jboss.threads@2.4.0.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
        at  org.jboss.threads@2.4.0.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
        at  org.jboss.xnio@3.8.2.Final//org.xnio.XnioWorker$WorkerThreadFactory$1$1.run(XnioWorker.java:1280)
        at  java.base/java.lang.Thread.run(Thread.java:834)
    Caus    ed by: java.lang.NullPointerException
        at  java.base/java.util.regex.Matcher.getTextLength(Matcher.java:1770)
        at  java.base/java.util.regex.Matcher.reset(Matcher.java:416)
        at  java.base/java.util.regex.Matcher.<init>(Matcher.java:253)
        at  java.base/java.util.regex.Pattern.matcher(Pattern.java:1133)
        at  java.base/java.util.regex.Pattern.split(Pattern.java:1261)
        at  org.keycloak.keycloak-server-spi-private@12.0.3//org.keycloak.broker.provider.util.IdentityBrokerState.encoded(IdentityBrokerState.java:41)
        at  org.keycloak.keycloak-services@12.0.3//org.keycloak.services.resources.IdentityBrokerService.parseEncodedSessionCode(IdentityBrokerService.java:1066)
        at  org.keycloak.keycloak-services@12.0.3//org.keycloak.services.resources.IdentityBrokerService.authenticated(IdentityBrokerService.java:517)
        at  org.keycloak.keycloak-services@12.0.3//org.keycloak.broker.saml.SAMLEndpoint$Binding.handleLoginResponse(SAMLEndpoint.java:508)
        ... 79 more```