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/*
 * Copyright (C) 2003-2007 Jost Boekemeier
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

package io.soluble.pjb.bridge;

import java.io.IOException;
import java.io.InputStream;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.security.KeyStore;

import javax.net.ServerSocketFactory;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLServerSocketFactory;

class SSLServerSocketHelper {
    private static final char[] KEYSTORE_PASSWORD = "123456".toCharArray();

    public static final ISocketFactory bind(final int port, final int backlog, final boolean isLocal) throws IOException {
        ServerSocketFactory ssocketFactory = null;
        if (System.getProperty("javax.net.ssl.keyStore", null) == null) {
            try {
                SSLContext sslContext = SSLContext.getInstance("TLS");
                KeyManagerFactory km = KeyManagerFactory.getInstance("SunX509");
                KeyStore ks = KeyStore.getInstance("JKS");
                InputStream in = SSLServerSocketHelper.class.getClassLoader().getResourceAsStream("META-INF/SSLServerSocketHelperKeystore");
                ks.load(in, KEYSTORE_PASSWORD);
                km.init(ks, KEYSTORE_PASSWORD);
                sslContext.init(km.getKeyManagers(), null, null);
                ssocketFactory = sslContext.getServerSocketFactory();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        if (ssocketFactory == null)
            ssocketFactory = SSLServerSocketFactory.getDefault();


        final ServerSocket ssocket =
                isLocal ?
                        ssocketFactory.createServerSocket(port, backlog, InetAddress.getByName("127.0.0.1")) :
                        ssocketFactory.createServerSocket(port, backlog);

        return new ISocketFactory() {

            /**{@inheritDoc}*/
            @Override
            public String getSocketName() {
                return String.valueOf(port);
            }

            /**{@inheritDoc}*/
            @Override
            public void close() throws IOException {
                ssocket.close();
            }

            /**{@inheritDoc}*/
            @Override
            public Socket accept() throws IOException {
                return ssocket.accept();
            }

            /**{@inheritDoc}*/
            @Override
            public String toString() {
                return (isLocal ? "HTTP_LOCAL:" : "HTTPS:") + getSocketName();
            }
        };
    }
}