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A library of useful generic objects and tools consolidated here to simplify all UVM CCTS projects
There is a newer version: 1.1.5
/*
 * Copyright 2015 The University of Vermont and State
 * Agricultural College.  All rights reserved.
 *
 * Written by Matthew B. Storer 
 *
 * This file is part of CCTS Common.
 *
 * CCTS Common 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 3 of the License, or
 * (at your option) any later version.
 *
 * CCTS Common 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 CCTS Common.  If not, see .
 */

package edu.uvm.ccts.common.rmi;

import edu.uvm.ccts.common.util.SSLUtil;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import javax.net.SocketFactory;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManagerFactory;
import java.io.IOException;
import java.io.Serializable;
import java.net.Socket;
import java.rmi.server.RMIClientSocketFactory;
import java.security.KeyStore;
import java.util.HashMap;
import java.util.Map;

/**
 * Created by mstorer on 8/13/14.
 */
public class RMISSLClientSocketFactory implements RMIClientSocketFactory, Serializable {
    private static final Log log = LogFactory.getLog(RMISSLClientSocketFactory.class);

    private String path;

    public RMISSLClientSocketFactory(String path, char[] passphrase) {
        this.path = path;

        try {
            KeyStore ks = SSLUtil.loadKeyStoreFromResource(path, passphrase);

            KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
            kmf.init(ks, passphrase);

            TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509");
            tmf.init(ks);

            SSLContext ctx = SSLContext.getInstance("TLS");
            ctx.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);

            SocketFactoryRegistry.getInstance().register(path, ctx.getSocketFactory());

        } catch (Exception e) {
            log.error("caught " + e.getClass().getName() + " - " + e.getMessage(), e);

            if (e instanceof RuntimeException)  throw (RuntimeException) e;
            else                                throw new RuntimeException(e);
        }
    }

    @Override
    public Socket createSocket(String host, int port) throws IOException {
        return SocketFactoryRegistry.getInstance().get(path).createSocket(host, port);
    }

    @Override
    public int hashCode() {
        return getClass().hashCode();
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        } else if (obj == null || getClass() != obj.getClass()) {
            return false;
        }
        return true;
    }


    private static final class SocketFactoryRegistry {
        private static SocketFactoryRegistry registry = null;

        private static SocketFactoryRegistry getInstance() {
            if (registry == null) registry = new SocketFactoryRegistry();
            return registry;
        }

        private Map map;

        private SocketFactoryRegistry() {
            map = new HashMap();
        }

        private void register(String key, SocketFactory sf) {
            map.put(key, sf);
        }

        private SocketFactory get(String key) {
            return map.get(key);
        }

        private void deregister(String key) {
            map.remove(key);
        }
    }

}