5 Replies Latest reply on May 30, 2006 10:16 AM by dromanyuk dromanyuk

    Jboss MQ + jaas

    dromanyuk dromanyuk Newbie

      Hi!

      It seems to me that I'm facing a huge problem ...

      I'm sending a JMS message to embedded queue called "queue/A".

      Everything's working!!

      But I've bound to my webapp a cool open-source security module called "jGuard"

      After this when I createQueueSession() I get the "principal=null" exception....

      20:34:29,609 ERROR [DispatchAction] java.lang.SecurityException: Invalid authentication attempt, principal=null

      Looks like this jGuard kills some security context or smth like that.

      What I've found on the internet is the following:

      SecurityAssociation.setPrincipal(new org.jboss.security.SimplePrincipal("guest")); SecurityAssociation.setCredential("guest".toCharArray());

      But....
      I get
      Invalid authentication attempt, principal=guest....

      So am I going the right way?

      If yes, how do I create a jboss user with "publisher" role?

      Sorry for my childish questions :)

      Thanks !

        • 1. Re: Jboss MQ + jaas
          chris griffith Expert

          JGuard works by adding their net.sf.jguard.filters.AccessFilter version of a javax.servlet.Filter to your web application. As such it is separate from container managed security. Do you see the difference?

          cgriffith

          • 2. Re: Jboss MQ + jaas
            dromanyuk dromanyuk Newbie

            Yes, I can see the difference...
            I even understand that it sounds stupid :)
            But the point is...
            When I comment out jGuar's "filter" and "filter-mapping" from my web.xml, I have my MDB working well.

            • 3. Re: Jboss MQ + jaas
              chris griffith Expert

              Give details on the security config of your MDB.

              • 4. Re: Jboss MQ + jaas
                dromanyuk dromanyuk Newbie

                Settings for "queue/A" and "QueueConnectionFactory" are default settings coming with jboss 4.0.3


                ******* jboss.xml *******

                <enterprise-beans>
                <message-driven>
                <ejb-name>ReplicationMDBBean</ejb-name>
                <destination-jndi-name>queue/A</destination-jndi-name>
                </message-driven>
                </enterprise-beans>





                ************** ejb-jar.xml***************

                <?xml version = '1.0' encoding = 'windows-1251'?>
                <!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
                <ejb-jar>
                <enterprise-beans>
                <message-driven>
                Message Driven Bean
                <display-name>ReplicationMDBBean</display-name>
                <ejb-name>ReplicationMDBBean</ejb-name>
                <ejb-class>mypackage.ReplicationMDBBean</ejb-class>
                <transaction-type>Container</transaction-type>
                <acknowledge-mode>Auto-acknowledge</acknowledge-mode>
                <message-driven-destination>
                <destination-type>javax.jms.Queue</destination-type>
                <subscription-durability>NonDurable</subscription-durability>
                </message-driven-destination>
                </message-driven>
                </enterprise-beans>
                <assembly-descriptor/>
                </ejb-jar>




                ************* message publishing ************
                Hashtable env = new Hashtable();
                env.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory"
                env.put(Context.PROVIDER_URL, "localhost" );
                env.put(Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jnp.interfaces" );

                InitialContext ctx = new InitialContext(env);

                queueFactory = (QueueConnectionFactory)ctx.lookup( "QueueConnectionFactory");

                queueConnection = queueFactory.createQueueConnection();


                // *** THIS LINE PRODUCES AN EXCEPTION WITH JGuard0.70 TURNED ON ***
                queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);

                queueConnection.start();

                dest = (Queue)ctx.lookup("queue/A");

                prod = queueSession.createProducer(dest);

                ObjectMessage objectJmsMsg = queueSession.createObjectMessage();
                objectJmsMsg.setObject(message);

                prod.send(objectJmsMsg);



                ****** MDBean code**********

                /**
                * The MDB EJB for handling queue JMS messages.
                */
                package mypackage.client;


                import mypackage.UploadMessage;
                import java.io.Serializable;

                import javax.ejb.*;
                import javax.jms.*;


                import javax.naming.*;



                /**
                * @version $Revision: 1.3 $
                */
                public class ReplicationMDBBean implements MessageDrivenBean, MessageListener {

                private MessageDrivenContext _context;
                private QueueConnection connection;
                private QueueSession session;


                //Logger log = null;

                /**
                * When MDB is being created this method will be called.
                * The Log4J and JMS queue connection will be established.
                */
                public void ejbCreate()
                {

                System.out.println( "In EJB create.." );


                try {

                System.out.println( "The EJB has been created" );
                this.setupPTP();
                }
                catch(Exception e) {
                System.out.println( "Failed to create MDB " + e.getStackTrace().toString() );
                throw new EJBException("Failed to create MDB ", e);
                }


                }

                public void setMessageDrivenContext(MessageDrivenContext context) throws EJBException {
                _context = context;
                }

                /**
                * When MDB destroying the following method is calling.
                * The JMS queue connection is destroyed as well
                * @throws EJBException
                */
                public void ejbRemove() throws EJBException
                {
                _context = null;
                try {
                if( session != null )
                session.close();

                if( connection != null )
                connection.close();
                System.out.println("MDB been has been destroyed.");
                }
                catch(Exception e) {
                System.out.println("Failed to destroy MDB "+ e);
                throw new EJBException("Failed to destroy MDB ", e);
                }
                }

                /**
                * this method is being called when JMS message will be obtained
                * after message is being retrieved from queue the data replication
                * is being perforemd
                * @param message
                */
                public void onMessage(Message message)
                {

                UploadMessage uploadMessage = null;
                System.out.println("The message has been recieved by MDB.");

                if( message instanceof ObjectMessage )
                try {
                ObjectMessage obj = (ObjectMessage)message;
                Serializable ser = obj.getObject();
                uploadMessage = (UploadMessage)ser;
                System.out.println( "Message"+uploadMessage );

                }
                catch(JMSException e) {
                System.out.println("The Object message can not be obtained. "+ e);
                throw new EJBException("The Object message can not be obtained. ", e);
                }


                }



                /**
                * setup connection with JMS queue and create connection session
                * @throws JMSException
                * @throws NamingException
                */
                private void setupPTP() throws JMSException, NamingException
                {
                InitialContext iniCtx = new InitialContext();
                Object tmp = iniCtx.lookup("QueueConnectionFactory");
                QueueConnectionFactory qcf = (QueueConnectionFactory) tmp;
                connection = qcf.createQueueConnection();
                session = connection.createQueueSession(false, QueueSession.AUTO_ACKNOWLEDGE);
                connection.start();
                System.out.println("The JMS queue connection has been established.");
                }
                }

                • 5. Re: Jboss MQ + jaas
                  dromanyuk dromanyuk Newbie

                  I have tried a lot of things to fix this issue....
                  And what I discovered is the following...
                  Even the simpliest thing jGuardExample.war kills any embedded jboss security...
                  For example, jmx-console, it can be set-up to allow only "admin"-users via standard http auth...
                  And if we copy jGuardExample.war to deploy directory, then try to enter jmx-console, we can see login/password dialog window, but correct login/password pair is NOT accepted...

                  So... looks like the problem is not with EJB, it's something more basic... Looks like jGuard destroys any jBoss security ...