Hello,

I'm trying to configure CAS so it can be used with SharePoint. I've 
followed the WS-Fed configuration documentation on the website, but I have 
a strange problem with the Security Token Service Provider.

When I try to make an "Issue" invocation, I have this exception (full stack 
trace at the end) :

org.apache.cxf.interceptor.Fault: object is not an instance of declaring 
> class while invoking public javax.xml.transform.Source 
> org.apache.cxf.ws.security.sts.provider.SecurityTokenServiceProvider.invoke(javax.xml.transform.Source)
>  
> with params [org.apache.cxf.staxutils.StaxSource@61cd376e]
>


It seems that the code is trying to call the "Invoke" method  of the 
SecurityTokenServiceProvider. This is done in the *AbstractSTSClient* class, 
in the *Issue(String appliesTo, String action, String requestType, String 
binaryExchange)* method

          Object obj[] = client.invoke(boi, new 
> DOMSource(writer.getDocument().getDocumentElement()));


I don't really understand what's going on there,  since the StaxSource 
class extends the Source interface. I've tried to directly call the *Invoke* 
method 
in the code (in a breakpoint during my call), with the same parameter but 
without reflection, and it works. Can you help me understand the problem ? 
Am I the only one noticing this ?

Thank you all in advance

The complete stacktrace : 

2018-05-04 09:21:08,285 DEBUG 
> [org.apereo.cas.ws.idp.authentication.WSFederationAuthenticationServiceSelectionStrategy]
>  
> - <Located service id [https://xxxxxx] from service authentication request 
> at 
> [/ws/idp/federationcallback?wa=wsignin1.0&wreply=https%3A%2F%2Fxxxxxxxxx]>
> 2018-05-04 09:21:08,311 DEBUG [org.apereo.cas.util.EncodingUtils] - 
> <Encrypting via [A128CBC-HS256]>
> 2018-05-04 09:21:10,033 DEBUG [org.apereo.cas.util.EncodingUtils] - 
> <Decrypting value...>
> 2018-05-04 09:21:10,119 WARN [org.apache.cxf.phase.PhaseInterceptorChain] 
> - <Application 
> {http://docs.oasis-open.org/ws-sx/ws-trust/200512/}SecurityTokenService#{http://docs.oasis-open.org/ws-sx/ws-trust/200512/}Issue
>  
> has thrown exception, unwinding now>
> org.apache.cxf.interceptor.Fault: object is not an instance of declaring 
> class while invoking public javax.xml.transform.Source 
> org.apache.cxf.ws.security.sts.provider.SecurityTokenServiceProvider.invoke(javax.xml.transform.Source)
>  
> with params [org.apache.cxf.staxutils.StaxSource@61cd376e].
> at 
> org.apache.cxf.service.invoker.AbstractInvoker.createFault(AbstractInvoker.java:168)
>  
> ~[classes/:3.2.0]
> at 
> org.apache.cxf.jaxws.AbstractJAXWSMethodInvoker.createFault(AbstractJAXWSMethodInvoker.java:267)
>  
> ~[cxf-rt-frontend-jaxws-3.2.0.jar:3.2.0]
> at 
> org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:142)
>  
> ~[classes/:3.2.0]
> at 
> org.apache.cxf.jaxws.AbstractJAXWSMethodInvoker.invoke(AbstractJAXWSMethodInvoker.java:232)
>  
> ~[cxf-rt-frontend-jaxws-3.2.0.jar:3.2.0]
> at 
> org.apache.cxf.jaxws.JAXWSMethodInvoker.invoke(JAXWSMethodInvoker.java:85) 
> ~[cxf-rt-frontend-jaxws-3.2.0.jar:3.2.0]
> at 
> org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:76)
>  
> ~[classes/:3.2.0]
> at 
> org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:59)
>  
> ~[cxf-core-3.2.0.jar:3.2.0]
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
> ~[?:1.8.0_111]
> at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_111]
> at 
> org.apache.cxf.interceptor.ServiceInvokerInterceptor$2.run(ServiceInvokerInterceptor.java:126)
>  
> ~[cxf-core-3.2.0.jar:3.2.0]
> at 
> org.apache.cxf.workqueue.SynchronousExecutor.execute(SynchronousExecutor.java:37)
>  
> ~[cxf-core-3.2.0.jar:3.2.0]
> at 
> org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:131)
>  
> ~[cxf-core-3.2.0.jar:3.2.0]
> at 
> org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
>  
> ~[cxf-core-3.2.0.jar:3.2.0]
> at 
> org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
>  
> ~[cxf-core-3.2.0.jar:3.2.0]
> at 
> org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:267)
>  
> ~[cxf-rt-transports-http-3.2.0.jar:3.2.0]
> at 
> org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:234)
>  
> ~[cxf-rt-transports-http-3.2.0.jar:3.2.0]
> at 
> org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:208)
>  
> ~[cxf-rt-transports-http-3.2.0.jar:3.2.0]
> at 
> org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:160)
>  
> ~[cxf-rt-transports-http-3.2.0.jar:3.2.0]
> at 
> org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:191)
>  
> ~[cxf-rt-transports-http-3.2.0.jar:3.2.0]
> at 
> org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:301)
>  
> ~[cxf-rt-transports-http-3.2.0.jar:3.2.0]
> at 
> org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:220)
>  
> ~[cxf-rt-transports-http-3.2.0.jar:3.2.0]
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:648) 
> ~[servlet-api.jar:?]
> at 
> org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:276)
>  
> ~[cxf-rt-transports-http-3.2.0.jar:3.2.0]
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>  
> ~[catalina.jar:8.0.39]
> at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
> ~[tomcat-websocket.jar:8.0.39]
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apereo.cas.web.support.AuthenticationCredentialsLocalBinderClearingFilter.doFilter(AuthenticationCredentialsLocalBinderClearingFilter.java:28)
>  
> ~[cas-server-core-web-5.2.4.jar:5.2.4]
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apereo.cas.security.RequestParameterPolicyEnforcementFilter.doFilter(RequestParameterPolicyEnforcementFilter.java:261)
>  
> ~[cas-server-security-filter-2.0.7.jar:2.0.7]
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apereo.cas.security.ResponseHeadersEnforcementFilter.doFilter(ResponseHeadersEnforcementFilter.java:245)
>  
> ~[cas-server-security-filter-2.0.7.jar:2.0.7]
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:111)
>  
> ~[spring-boot-actuator-1.5.12.RELEASE.jar:1.5.12.RELEASE]
> at 
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
>  
> ~[spring-web-4.3.16.RELEASE.jar:4.3.16.RELEASE]
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
>  
> ~[spring-web-4.3.16.RELEASE.jar:4.3.16.RELEASE]
> at 
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
>  
> ~[spring-web-4.3.16.RELEASE.jar:4.3.16.RELEASE]
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:109)
>  
> ~[spring-web-4.3.16.RELEASE.jar:4.3.16.RELEASE]
> at 
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
>  
> ~[spring-web-4.3.16.RELEASE.jar:4.3.16.RELEASE]
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81)
>  
> ~[spring-web-4.3.16.RELEASE.jar:4.3.16.RELEASE]
> at 
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
>  
> ~[spring-web-4.3.16.RELEASE.jar:4.3.16.RELEASE]
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apereo.cas.logging.web.ThreadContextMDCServletFilter.doFilter(ThreadContextMDCServletFilter.java:93)
>  
> ~[cas-server-core-logging-5.2.4.jar:5.2.4]
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:106)
>  
> ~[spring-boot-actuator-1.5.12.RELEASE.jar:1.5.12.RELEASE]
> at 
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
>  
> ~[spring-web-4.3.16.RELEASE.jar:4.3.16.RELEASE]
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
>  
> ~[spring-web-4.3.16.RELEASE.jar:4.3.16.RELEASE]
> at 
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
>  
> ~[spring-web-4.3.16.RELEASE.jar:4.3.16.RELEASE]
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.springframework.boot.web.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:117)
>  
> ~[spring-boot-1.5.12.RELEASE.jar:1.5.12.RELEASE]
> at 
> org.springframework.boot.web.support.ErrorPageFilter.access$000(ErrorPageFilter.java:61)
>  
> ~[spring-boot-1.5.12.RELEASE.jar:1.5.12.RELEASE]
> at 
> org.springframework.boot.web.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:92)
>  
> ~[spring-boot-1.5.12.RELEASE.jar:1.5.12.RELEASE]
> at 
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
>  
> ~[spring-web-4.3.16.RELEASE.jar:4.3.16.RELEASE]
> at 
> org.springframework.boot.web.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:110)
>  
> ~[spring-boot-1.5.12.RELEASE.jar:1.5.12.RELEASE]
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apereo.inspektr.common.web.ClientInfoThreadLocalFilter.doFilter(ClientInfoThreadLocalFilter.java:66)
>  
> ~[inspektr-common-1.8.2.GA.jar:1.8.2.GA]
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.logging.log4j.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:71)
>  
> ~[log4j-web-2.9.1.jar:2.9.1]
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141) 
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) 
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
>  
> ~[catalina.jar:8.0.39]
> at 
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:509) 
> ~[catalina.jar:8.0.39]
> at 
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1104)
>  
> ~[tomcat-coyote.jar:8.0.39]
> at 
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
>  
> ~[tomcat-coyote.jar:8.0.39]
> at 
> org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1520)
>  
> ~[tomcat-coyote.jar:8.0.39]
> at 
> org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1476)
>  
> ~[tomcat-coyote.jar:8.0.39]
> at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>  
> ~[?:1.8.0_111]
> at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>  
> ~[?:1.8.0_111]
> at 
> org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
>  
> ~[tomcat-util.jar:8.0.39]
> at java.lang.Thread.run(Thread.java:745) [?:1.8.0_111]
> Caused by: java.lang.IllegalArgumentException: object is not an instance 
> of declaring class
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
> ~[?:1.8.0_111]
> at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
> ~[?:1.8.0_111]
> at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>  
> ~[?:1.8.0_111]
> at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_111]
> at 
> org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:182)
>  
> ~[classes/:3.2.0]
> at 
> org.apache.cxf.jaxws.JAXWSMethodInvoker.performInvocation(JAXWSMethodInvoker.java:66)
>  
> ~[cxf-rt-frontend-jaxws-3.2.0.jar:3.2.0]
> at 
> org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:98)
>  
> ~[classes/:3.2.0]
> ... 90 more

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