I read the article and based on it the following standalone class should be able to
access the remote EJB because the logincontext.login() call succeeds. Is there
anything wrong with this class?
===============================================
package tutorial.client;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Set;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import javax.security.auth.callback.*;
import javax.security.auth.login.LoginContext;
import javax.security.auth.login.LoginException;
import tutorial.interfaces.Fibo;
import tutorial.interfaces.FiboHome;
public class ClientMain {
static class AppCallbackHandler implements CallbackHandler
{
private String username;
private char[] password;
public AppCallbackHandler(String username, char[] password)
{
this.username = username;
this.password = password;
}
public void handle(Callback[] callbacks) throws
java.io.IOException, UnsupportedCallbackException
{
for (int i = 0; i < callbacks.length; i++)
{
if (callbacks instanceof NameCallback)
{
NameCallback nc = (NameCallback)callbacks;
nc.setName(username);
}
else if (callbacks instanceof PasswordCallback)
{
PasswordCallback pc = (PasswordCallback)callbacks;
pc.setPassword(password);
}
else
{
throw new UnsupportedCallbackException(callbacks, "Unrecognized
Callback");
}
}
}
}
public static void main(String[] args) {
FiboHome home;
String name = "login";
char[] password = "password".toCharArray();
try {
AppCallbackHandler handler = new AppCallbackHandler(name, password);
LoginContext lc = new LoginContext("TestClient", handler);
System.out.println("Created LoginContext");
lc.login();
} catch (LoginException le) {
System.out.println("Login failed");
le.printStackTrace();
}
try {
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY,
"org.jnp.interfaces.NamingContextFactory");
env.put(Context.PROVIDER_URL, "jnp://localhost:1099");
env.put(Context.OBJECT_FACTORIES, "org.jboss.naming:org.jnp.interfaces");
Context context = new InitialContext(env);
Object ref = context.lookup("ejb/tutorial/Fibo");
home = (FiboHome) PortableRemoteObject.narrow(ref, FiboHome.class);
env = context.getEnvironment();
Set keys = env.keySet();
Iterator it = keys.iterator();
while (it.hasNext()) {
Object next = it.next();
System.out.println("key: " + next + ", value: " + env.get(next));
}
Fibo bean = home.create();
double[] result = bean.compute(5);
bean.remove();
System.out.println("The first 5 Fibonacci numbers ");
for (int i = 0; i < result.length; i++) {
System.out.println(result);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
===============================================
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