RE: JNDI Realm NPE

[pgodot <pg...@temenos.com>]

Hi tomcat list,

 

I'm trying to setup a JNDIRealm and I recieved a NPE if the user is not in
the LDAP Server:

 

java.lang.NullPointerException

            at
org.apache.catalina.realm.JNDIRealm.getPrincipal(JNDIRealm.java:1555)

            at
org.apache.catalina.realm.JNDIRealm.getPrincipal(JNDIRealm.java:1502)

            at
org.apache.catalina.realm.RealmBase.getPrincipal(RealmBase.java:1198)

            at
org.apache.catalina.realm.RealmBase.authenticate(RealmBase.java:436)

            at
org.apache.catalina.authenticator.SSLAuthenticator.authenticate(SSLAuthentic
ator.java:148)

            at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase
.java:490)

            at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126
)

            at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105
)

            at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:107)

            at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)

            at
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)

            at
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)

            at
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:754)

            at
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:684)

            at
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java
:876)

            at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav
a:684)

            at java.lang.Thread.run(Thread.java:595)

 

This NPE arrived in the Realm and then tomcat doen't present any error page.

 

I checked quickly the JNDI realm code and so that:

 

   /**

     * Return the Principal associated with the given user name.

     */

    protected synchronized Principal getPrincipal(DirContext context,

                                                  String username)

        throws NamingException {

        

        User user = getUser(context, username);

        

        return new GenericPrincipal(this, user.username, user.password ,

                getRoles(context, user));

    }

 

But the getUser method return null when user is not found in the LDAP .

 

If the user is referenced in the LDAP all is ok !!!!

 

Thanks,

Phil




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