The fetchDirectMembers method of the RFC2307MemberParser class doesn't check whether the returned member from getMember is null before adding it to the list of return values. Multiple conditions can cause the returned value to be null, including at least:

• The listed member object wasn't found in the directory tree
• There is more than one object in the directory tree that matches the name listed

If a null value is part of the returned list from fetchDirectMembers, this will cause a NullPointerException later down the line, for example:

2008-05-30 15:51:08,878 http-8095-Processor24 INFO [integration.directory.connector.Rfc2307] Performing principal search: baseDN = dc=datasynapse,dc=com - filter = (&(uid=emergency)(&(objectClass=posixAccount)(!(uid=$))(title=)))
2008-05-30 15:51:08,921 http-8095-Processor21 INFO [integration.directory.connector.Rfc2307] Performing group search: baseDN = ou=groups,dc=datasynapse,dc=com - filter = (objectclass=posixGroup)
2008-05-30 15:51:08,952 http-8095-Processor21 ERROR [codehaus.xfire.handler.DefaultFaultHandler] Fault occurred!
java.lang.NullPointerException
at com.atlassian.crowd.integration.directory.connector.mapper.fetcher.GenericFetcher.isOfObjectClass(GenericFetcher.java:81)
at com.atlassian.crowd.integration.directory.connector.mapper.fetcher.GenericFetcher.isContainer(GenericFetcher.java:65)
at com.atlassian.crowd.integration.directory.connector.mapper.fetcher.SubGroupFetcher.addMembers(SubGroupFetcher.java:51)
at com.atlassian.crowd.integration.directory.connector.mapper.ContainerContextMapper.mapFromContext(ContainerContextMapper.java:90)
at com.atlassian.crowd.integration.directory.connector.mapper.ContainerContextMapper.mapFromContext(ContainerContextMapper.java:62)
at org.springframework.ldap.core.ContextMapperCallbackHandler.getObjectFromNameClassPair(ContextMapperCallbackHandler.java:63)
at org.springframework.ldap.core.CollectingNameClassPairCallbackHandler.handleNameClassPair(CollectingNameClassPairCallbackHandler.java:50)
at org.springframework.ldap.core.LdapTemplate.search(LdapTemplate.java:276)
at org.springframework.ldap.core.LdapTemplate.search(LdapTemplate.java:213)
at org.springframework.ldap.core.LdapTemplate.search(LdapTemplate.java:601)
at org.springframework.ldap.core.LdapTemplate.search(LdapTemplate.java:509)
at com.atlassian.crowd.integration.directory.connector.SpringLDAPConnector.searchGroups(SpringLDAPConnector.java:717)
at com.atlassian.crowd.manager.application.ApplicationManagerGeneric.searchGroups(ApplicationManagerGeneric.java:1564)
at com.atlassian.crowd.service.soap.SecurityServerGeneric.findAllGroupRelationships(SecurityServerGeneric.java:579)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at com.atlassian.spring.interceptors.SpringProfilingInterceptor.invoke(SpringProfilingInterceptor.java:20)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy8.findAllGroupRelationships(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.codehaus.xfire.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:59)
at org.codehaus.xfire.service.binding.ServiceInvocationHandler.sendMessage(ServiceInvocationHandler.java:320)
at org.codehaus.xfire.service.binding.ServiceInvocationHandler$1.run(ServiceInvocationHandler.java:86)
at org.codehaus.xfire.service.binding.ServiceInvocationHandler.execute(ServiceInvocationHandler.java:134)
at org.codehaus.xfire.service.binding.ServiceInvocationHandler.invoke(ServiceInvocationHandler.java:109)
at org.codehaus.xfire.handler.HandlerPipeline.invoke(HandlerPipeline.java:131)
at org.codehaus.xfire.transport.DefaultEndpoint.onReceive(DefaultEndpoint.java:64)
at org.codehaus.xfire.transport.AbstractChannel.receive(AbstractChannel.java:38)
at org.codehaus.xfire.transport.http.XFireServletController.invoke(XFireServletController.java:304)
at org.codehaus.xfire.transport.http.XFireServletController.doService(XFireServletController.java:129)
at org.codehaus.xfire.transport.http.XFireServlet.doPost(XFireServlet.java:116)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
at com.atlassian.crowd.console.filter.CrowdOpenSessionInViewFilter.doFilterInternal(CrowdOpenSessionInViewFilter.java:26)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:75)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at com.atlassian.gzipfilter.GzipFilter.doFilterInternal(GzipFilter.java:88)
at com.atlassian.gzipfilter.GzipFilter.doFilter(GzipFilter.java:64)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:183)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:138)
at com.atlassian.crowd.console.filter.CrowdDelegatingFilterProxy.doFilter(CrowdDelegatingFilterProxy.java:38)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at com.atlassian.johnson.filters.AbstractJohnsonFilter.doFilter(AbstractJohnsonFilter.java:72)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at com.atlassian.johnson.filters.AbstractJohnsonFilter.doFilter(AbstractJohnsonFilter.java:72)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:595)