How to test user / pass for Remote Naming JNDI in JBoss EAP 6.4 / 7.0

Environment

• Red Hat JBoss Enterprise Application Platform (EAP)
  • 7.0
  • 6.4

Issue

• How to test user / pass for Remote Naming JNDI in JBoss EAP 6.4 / 7.0

Resolution

Calling context.list("") can be used to validate the host / port and username / password. Checking the exception cause can differentiate the issue for example:

import javax.naming.*;
import java.util.*;

  private static String validateConnectionInfo(String host, Integer port, String username, String password) {
    Context ctx = null;
    try {
      ctx = getInitialContext(host, port, username, password);
      NamingEnumeration en = ctx.list("/");
    } catch(javax.naming.CommunicationException ce) {
          return "wrong host or port"; 
    } catch(javax.naming.AuthenticationException ae) {
       if(ae.getCause() instanceof javax.security.sasl.SaslException)
          return "wrong username or password";
   } catch(NamingException ne) { // some other naming exception
      return ne.getClass().getName() + ": " + ne.getMessage(); 
    } finally {
      // make sure to close the Remote Naming context to prevent connection leaks
      if(ctx != null) {
        try { ctx.close(); } catch(Exception e) { } 
      }   
    }   
    return "valid";
  }

  private static Context getInitialContext(String host, Integer port, String username, String password)  throws NamingException {
   Properties props = new Properties();
   props.put(Context.INITIAL_CONTEXT_FACTORY,  "org.jboss.naming.remote.client.InitialContextFactory");
   props.put(Context.PROVIDER_URL, String.format("%s://%s:%d", "remote", host, port));
   if(username != null && password != null) {
      props.put(Context.SECURITY_PRINCIPAL, username);
      props.put(Context.SECURITY_CREDENTIALS, password);
    }   
   return new InitialContext(props);
  }

See also: How to test host / port / user / pass for remote JNDI authenticates and is correct in JBoss EAP 7.1

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