/*

 * Copyright 2006 Sun Microsystems, Inc.  All Rights Reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 *   - Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer.

 *

 *   - Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution.

 *

 *   - Neither the name of Sun Microsystems nor the names of its

 *     contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

import java.io.*;

import java.net.URL;

import java.security.*;

import java.security.cert.*;

import javax.net.ssl.*;

public class InstallCert {

    public static void main(String[] args) throws Exception {

    String host;

    int port;

    char[] passphrase;

    if ((args.length == ) || (args.length == )) {

        String[] c = args[].split(":");

        host = c[];

        port = (c.length == ) ?  : Integer.parseInt(c[]);

        String p = (args.length == ) ? "changeit" : args[];

        passphrase = p.toCharArray();

    } else {

        System.out.println("Usage: java InstallCert <host>[:port] [passphrase]");

        return;

    }

    File file = new File("jssecacerts");

    if (file.isFile() == false) {

        char SEP = File.separatorChar;

        File dir = new File(System.getProperty("java.home") + SEP

            + "lib" + SEP + "security");

        file = new File(dir, "jssecacerts");

        if (file.isFile() == false) {

        file = new File(dir, "cacerts");

        }

    }

    System.out.println("Loading KeyStore " + file + "...");

    InputStream in = new FileInputStream(file);

    KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());

    ks.load(in, passphrase);

    in.close();

    SSLContext context = SSLContext.getInstance("TLS");

    TrustManagerFactory tmf =

        TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());

    tmf.init(ks);

    X509TrustManager defaultTrustManager = (X509TrustManager)tmf.getTrustManagers()[];

    SavingTrustManager tm = new SavingTrustManager(defaultTrustManager);

    context.init(null, new TrustManager[] {tm}, null);

    SSLSocketFactory factory = context.getSocketFactory();

    System.out.println("Opening connection to " + host + ":" + port + "...");

    SSLSocket socket = (SSLSocket)factory.createSocket(host, port);

    socket.setSoTimeout();

    try {

        System.out.println("Starting SSL handshake...");

        socket.startHandshake();

        socket.close();

        System.out.println();

        System.out.println("No errors, certificate is already trusted");

    } catch (SSLException e) {

        System.out.println();

        e.printStackTrace(System.out);

    }

    X509Certificate[] chain = tm.chain;

    if (chain == null) {

        System.out.println("Could not obtain server certificate chain");

        return;

    }

    BufferedReader reader =

        new BufferedReader(new InputStreamReader(System.in));

    System.out.println();

    System.out.println("Server sent " + chain.length + " certificate(s):");

    System.out.println();

    MessageDigest sha1 = MessageDigest.getInstance("SHA1");

    MessageDigest md5 = MessageDigest.getInstance("MD5");

    for (int i = ; i < chain.length; i++) {

        X509Certificate cert = chain[i];

        System.out.println

            (" " + (i + ) + " Subject " + cert.getSubjectDN());

        System.out.println("   Issuer  " + cert.getIssuerDN());

        sha1.update(cert.getEncoded());

        System.out.println("   sha1    " + toHexString(sha1.digest()));

        md5.update(cert.getEncoded());

        System.out.println("   md5     " + toHexString(md5.digest()));

        System.out.println();

    }

    System.out.println("Enter certificate to add to trusted keystore or 'q' to quit: [1]");

    String line = reader.readLine().trim();

    int k;

    try {

        k = (line.length() == ) ?  : Integer.parseInt(line) - ;

    } catch (NumberFormatException e) {

        System.out.println("KeyStore not changed");

        return;

    }

    X509Certificate cert = chain[k];

    String alias = host + "-" + (k + );

    ks.setCertificateEntry(alias, cert);

    OutputStream out = new FileOutputStream("jssecacerts");

    ks.store(out, passphrase);

    out.close();

    System.out.println();

    System.out.println(cert);

    System.out.println();

    System.out.println

        ("Added certificate to keystore 'jssecacerts' using alias '"

        + alias + "'");

    }

    private static final char[] HEXDIGITS = "0123456789abcdef".toCharArray();

    private static String toHexString(byte[] bytes) {

    StringBuilder sb = new StringBuilder(bytes.length * );

    for (int b : bytes) {

        b &= 0xff;

        sb.append(HEXDIGITS[b >> ]);

        sb.append(HEXDIGITS[b & ]);

        sb.append(' ');

    }

    return sb.toString();

    }

    private static class SavingTrustManager implements X509TrustManager {

    private final X509TrustManager tm;

    private X509Certificate[] chain;

    SavingTrustManager(X509TrustManager tm) {

        this.tm = tm;

    }

    public X509Certificate[] getAcceptedIssuers() {

        throw new UnsupportedOperationException();

    }

    public void checkClientTrusted(X509Certificate[] chain, String authType)

        throws CertificateException {

        throw new UnsupportedOperationException();

    }

    public void checkServerTrusted(X509Certificate[] chain, String authType)

        throws CertificateException {

        this.chain = chain;

        tm.checkServerTrusted(chain, authType);

    }

    }

}