/*
  Copyright (c) 1996, 1997, 1998, 1999, 2002 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
 
GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */

package gnu.classpath.tools.rmi.registry;

import java.rmi.registry.Registry;
import java.rmi.registry.LocateRegistry;
import java.rmi.RemoteException;
import java.rmi.NotBoundException;
import java.rmi.AccessException;
import java.rmi.AlreadyBoundException;
import java.rmi.Remote;
import java.rmi.server.UnicastRemoteObject;
import java.rmi.server.ObjID;
import java.rmi.server.ServerRef;
import java.util.Hashtable;
import java.util.Enumeration;
import java.rmi.server.RMISocketFactory;
import java.rmi.server.RMIClientSocketFactory;
import java.rmi.server.RMIServerSocketFactory;
import gnu.java.rmi.server.UnicastServerRef;

public class RegistryImpl
	extends UnicastRemoteObject implements Registry {

private Hashtable bindings = new Hashtable();

public RegistryImpl(int port) throws RemoteException {
	this(port, RMISocketFactory.getSocketFactory(), RMISocketFactory.getSocketFactory());
}

public RegistryImpl(int port, RMIClientSocketFactory cf, RMIServerSocketFactory sf) throws RemoteException {
	super((ServerRef)new UnicastServerRef(new ObjID(ObjID.REGISTRY_ID), port, sf));
	// The following is unnecessary, because UnicastRemoteObject export itself automatically.
	//((UnicastServerRef)getRef()).exportObject(this);
}

public Remote lookup(String name) throws RemoteException, NotBoundException, AccessException {
	Object obj = bindings.get(name);
	if (obj == null) {
		throw new NotBoundException(name);
	}
	return ((Remote)obj);
}

public void bind(String name, Remote obj) throws RemoteException, AlreadyBoundException, AccessException {
	if (bindings.containsKey(name)) {
		throw new AlreadyBoundException(name);
	}
	bindings.put(name, obj);
}

public void unbind(String name) throws RemoteException, NotBoundException, AccessException {
	Object obj = bindings.remove(name);
	if (obj == null) {
		throw new NotBoundException(name);
	}
}

public void rebind(String name, Remote obj) throws RemoteException, AccessException {
	bindings.put(name, obj);
}

public String[] list() throws RemoteException, AccessException {
	int size = bindings.size();
	String[] strings = new String[size];
	Enumeration e = bindings.keys();
	for (int i = 0; i < size; i++) {
		strings[i] = (String)e.nextElement();
	}
	return (strings);
}

public static void version() {
	System.out.println("rmiregistry ("
			   + System.getProperty("java.vm.name")
			   + ") "
			   + System.getProperty("java.vm.version"));
	System.out.println("Copyright 2002 Free Software Foundation, Inc.");
	System.out.println("This is free software; see the source for copying conditions.  There is NO");
	System.out.println("warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.");
	System.exit(0);
}

public static void help() {
	System.out.println(
"Usage: rmiregistry [OPTION | PORT]\n" +
"\n" +
"    --help                Print this help, then exit\n" +
"    --version             Print version number, then exit\n");
	System.exit(0);
}

public static void main(String[] args) {
	int port = Registry.REGISTRY_PORT;
	if (args.length > 0) {
		if (args[0].equals("--version")) {
			version();
		}
		else if (args[0].equals("--help")) {
			help();
		}
		try {
			port = Integer.parseInt(args[0]);
		}
		catch (NumberFormatException _) {
			System.err.println("Bad port number - using default");
		}
	}

	try {
		Registry impl = LocateRegistry.createRegistry(port);
	}
	catch (RemoteException _) {
		System.err.println("Registry failed");
	}
}

}