dumpcred.java

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/*
 * Copyright (c) 2001 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:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *       Sun Microsystems, Inc. for Project JXTA."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact Project JXTA at http://www.jxta.org.
 *
 * 5. Products derived from this software may not be called "JXTA",
 *    nor may "JXTA" appear in their name, without prior written
 *    permission of Sun.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 SUN MICROSYSTEMS OR
 * ITS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Project JXTA.  For more
 * information on Project JXTA, please see
 * <http://www.jxta.org/>.
 *
 * This license is based on the BSD license adopted by the Apache Foundation.
 *
 * $Id: dumpcred.java,v 1.1 2005/06/19 02:43:55 bondolo Exp $
 */

package net.jxta.impl.shell.bin.pse;

import java.io.OutputStream;
import java.io.StringWriter;
import java.math.BigInteger;
import java.net.URL;
import java.security.PrivateKey;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import java.util.Arrays;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Calendar;
import java.util.Date;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.UnknownServiceException;
import java.security.KeyStoreException;

import javax.crypto.EncryptedPrivateKeyInfo;

import net.jxta.document.MimeMediaType;
import net.jxta.document.XMLDocument;
import net.jxta.id.ID;
import net.jxta.id.IDFactory;
import net.jxta.membership.MembershipService;
import net.jxta.peergroup.PeerGroup;
import net.jxta.protocol.ModuleImplAdvertisement;

import net.jxta.impl.membership.pse.PSEMembershipService;
import net.jxta.impl.membership.pse.PSECredential;
import net.jxta.impl.membership.pse.PSEUtils;
import net.jxta.impl.util.BASE64OutputStream;

import net.jxta.impl.shell.GetOpt;
import net.jxta.impl.shell.ShellApp;
import net.jxta.impl.shell.ShellEnv;
import net.jxta.impl.shell.ShellObject;

/**
 *  PSE.dumpcred
 **/
public class dumpcred extends ShellApp {
    
    /**
     *  {@inheritDoc}
     **/
    public int startApp(String[] argv ) {
        ShellEnv env = getEnv();
        PeerGroup current = (PeerGroup) env.get("stdgroup").getObject();
        String credEnvName = null;
        boolean showBASE64 = false;
        boolean showPrivate = false;
        char[] privatePassword = null;
        
        GetOpt options = new GetOpt( argv, 0, "apx:" );
        
        while( true ) {
            int option;
            try {
                option = options.getNextOption();
            } catch( IllegalArgumentException badopt ) {
                consoleMessage( "Illegal argument :" + badopt );
                return syntaxError();
            }
            
            if( -1 == option ) {
                break;
            }
            
            switch( option ) {
                case 'a' :
                    showBASE64 = true;
                    break;
                    
                case 'p' :
                    showPrivate = true;
                    break;
                    
                case 'x' :
                    privatePassword = options.getOptionArg().toCharArray();
                    break;
                    
                default :
                    consoleMessage( "Unrecognized option" );
                    return syntaxError();
            }
        }
        
        credEnvName = options.getNextParameter();
        
        if ( null == credEnvName ) {
            consoleMessage( "Missing <cred> parameter" );
            return syntaxError();
        }
        
        if ( null != options.getNextParameter() ) {
            consoleMessage( "Unsupported parameter" );
            return syntaxError();
        }
        
        MembershipService membership = getGroup().getMembershipService();
        
        if( !(membership instanceof PSEMembershipService) ) {
            ModuleImplAdvertisement mia = (ModuleImplAdvertisement) membership.getImplAdvertisement();
            
            consoleMessage( "Group membership service is not PSE. (" + mia.getDescription() + ")" );
            return ShellApp.appMiscError;
        }
        
        PSEMembershipService pse = (PSEMembershipService) membership;
        
        if( null == pse.getDefaultCredential() ) {
            consoleMessage( "Key store has not been opened." );
            return ShellApp.appMiscError;
        }
        
        try {
            ShellObject credEnv = env.get( credEnvName );

            if( null == credEnv ) {
                consoleMessage( "Environment variable '" + credEnvName + "' not found." );
                return ShellApp.appMiscError;
            }

            if( !PSECredential.class.isAssignableFrom( credEnv.getObjectClass() ) ) {
                consoleMessage( "'" + credEnvName + "' is not a  is not a PSE credential." );
                return ShellApp.appMiscError;
            }

            println( "Certificate:" );

                PSECredential cred = (PSECredential) credEnv.getObject();

            X509Certificate cert = cred.getCertificate();
            
            byte encoded[] = cert.getEncoded();
            
            if( showBASE64 ) {
                StringWriter base64 = new StringWriter();
                OutputStream out = new BASE64OutputStream( base64, 72);
                
                out.write(encoded);
                out.close();
                base64.close();
                
                println( base64.toString() );
            } else {
                String hex = toHex( encoded, 0, encoded.length );
                
                println( hex );
            }

            if( showPrivate ) {
                PrivateKey key = null;

                println( "Private Key:" );

                try {
                    key = cred.getPrivateKey();
                } catch( IllegalStateException notLocal ) {;}

                if( null == key ) {
                    consoleMessage( "Credential is not a local login credential." );
                    return ShellApp.appMiscError;
                }
                                
                if( null == privatePassword ) {
                    encoded = key.getEncoded();
                } else {
                    EncryptedPrivateKeyInfo encrypted = PSEUtils.pkcs5_Encrypt_pbePrivateKey( privatePassword, key, 10000 );
                    
                    encoded = encrypted.getEncoded();
                }

                if( showBASE64 ) {
                    StringWriter base64 = new StringWriter();
                    OutputStream out = new BASE64OutputStream( base64, 72);

                    out.write(encoded);
                    out.close();
                    base64.close();

                    println( base64.toString() );
                } else {
                    String hex = toHex( encoded, 0, encoded.length );

                    println( hex );
                }
            }
        } catch( Exception failure ) {
            printStackTrace( "Failure while recovering certificate", failure );
            return ShellApp.appMiscError;
        }
        
        return ShellApp.appNoError;
    }
    
    private static final char hex[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
    
    /**
     * Do a hex dump of a byte array
     **/
    private static String toHex(byte[] arr, int offset, int len) {
        StringBuffer str = new StringBuffer((3 * len) + (9 * (len / 16)));
        
        for (int i = offset; i < len; i++) {
            if ((i % 16) == 0) {
                String address = "00000000" + Integer.toHexString(i);

                str.append(address.substring(address.length() - 8) + ": ");
            }
            str.append(hex[(arr[i] >> 4) & 0x0f]);
            str.append(hex[arr[i] & 0x0f]);
            if (15 != (i % 16)) {
                str.append(' ');
            } else {
                str.append('\n');
            }
        }
        
        return str.toString();
    }
    
    private int syntaxError() {
        consoleMessage( "Usage: pse.dumpcred <cred>" );
        return ShellApp.appParamError;
    }
    
    /**
     *  {@inheritDoc}
     **/
    public String getDescription() {
        return "Dumps a credential.";
    }
    
    /**
     *  {@inheritDoc}
     **/
    public void help() {
        println("NAME");
        println("     pse.dumpcred  - " + getDescription() );
        println(" ");
        println("SYNOPSIS");
        println(" ");
        println("     pse.dumpcred [-a] [-p [-x <password>]] <cred>");
        println(" ");
        println("     <cred>    The credential to be printed." );
        println(" ");
        println("OPTIONS");
        println(" ");
        println("      [-a]              Print in BASE64 format." );
        println("      [-p]              Print the private key." );
        println("      [-x <password>]]  Encrpyt the private key using <password>. " );
        println(" ");
        println("DESCRIPTION");
        println(" ");
        println("Dumps a credential object.");
        println(" ");
        println("EXAMPLE");
        println(" ");
        println("    JXTA> pse.dumpcred cred0");
        println(" ");
        println(" ");
        println("SEE ALSO");
        println("     pse.certs pse.keys pse.erase pse.create login");
    }
}