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InstallCert original

/*
 * 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 == 1) || (args.length == 2))
        {
           String[] c = args[0].split(":");
           host = c[0];
           port = (c.length == 1) ? 443 : Integer.parseInt(c[1]);
           String p = (args.length == 1) ? "changeit" : args[1];
           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()[0];
         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(10000);
         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 = 0; i < chain.length; i++)
         {
         X509Certificate cert = chain[i];
         System.out.println
          (" " + (i + 1) + " 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() == 0) ? 0 : Integer.parseInt(line) - 1;
         } catch (NumberFormatException e)
         {
             System.out.println("KeyStore not changed");
             return;
         }

         X509Certificate cert = chain[k];
         String alias = host + "-" + (k + 1);
         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 * 3);
        for (int b : bytes)
        {
         b &= 0xff;
         sb.append(HEXDIGITS[b >> 4]);
         sb.append(HEXDIGITS[b & 15]);
         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);
         }
   }
} //end class

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Published

Feb 17, 2012

Category

java-classes

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Tags

  • classes 92
  • installcert 2
  • java 252
  • original 1