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Glassfish example source code file (SunOneBasicX509TrustManager.java)

This example Glassfish source code file (SunOneBasicX509TrustManager.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Glassfish tags/keywords

asadmintruststore, bufferedreader, bufferedreader, certificateexception, certificateexception, illegalargumentexception, io, ioexception, net, object, runtimeexception, runtimeexception, ssl, string, string, sunonebasicx509trustmanager, text, util, x509certificate

The Glassfish SunOneBasicX509TrustManager.java source code

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2006-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
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 * and therefore, elected the GPL Version 2 license, then the option applies
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/* SunOneBasicX509TrustManager.java
 * $Id: SunOneBasicX509TrustManager.java,v 1.4 2005/12/25 04:26:33 tcfujii Exp $
 * $Revision: 1.4 $
 * $Date: 2005/12/25 04:26:33 $
 * Indentation Information:
 * 0. Please (try to) preserve these settings.
 * 1. Tabs are preferred over spaces.
 * 2. In vi/vim -
 *		:set tabstop=4 :set shiftwidth=4 :set softtabstop=4
 * 3. In S1 Studio -
 *		1. Tools->Options->Editor Settings->Java Editor->Tab Size = 4
 *		2. Tools->Options->Indentation Engines->Java Indentation Engine->Expand Tabs to Spaces = False.
 *		3. Tools->Options->Indentation Engines->Java Indentation Engine->Number of Spaces per Tab = 4.
 */

package com.sun.enterprise.admin.jmx.remote.https;

import javax.net.ssl.X509TrustManager;
import java.security.cert.X509Certificate;
import java.security.cert.CertificateException;
import com.sun.enterprise.admin.jmx.remote.https.AsadminTruststore;
import com.sun.enterprise.admin.jmx.remote.IStringManager;
import com.sun.enterprise.admin.jmx.remote.StringManagerFactory;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;

import java.util.Date;
import java.util.Map;
import java.text.DateFormat;

/**
 * An implementation of {@link X509TrustManager} that provides basic support for Trust Management.
 * As of $Revision: 1.4 $ it checks if the server is trusted and displays the certificate chain
 * that was received from the server. The user is then prompted to confirm the certificate. If 
 * confirmed the certificate is entered into the client side asadmintruststore (whose default
 * name is ~/.asadmintruststore). Once in the truststore, the user is never prompted to confirm 
 * a second time.
 * @author  <a href="mailto:Kedar.Mhaswade@sun.com">Kedar Mhaswade
 * @since S1AS8.0
 * @version $Revision: 1.4 $
 */
public class SunOneBasicX509TrustManager implements X509TrustManager {
		
    private final Object _alias;    
    private boolean _alreadyInvoked;
    private CertificateException _lastCertException;
    private RuntimeException _lastRuntimeException;
    
    private static IStringManager _strMgr = null;
        
    /**
     * Creates an instance of the SunOneBasicX509TrustManager
     * @param alias The toString() of the alias object concatenated with a date/time stamp is used as 
     * the alias of the trusted server certificate in the client side .asadmintruststore. When null
     * only a date / timestamp is used as an alias.
     */    
    public SunOneBasicX509TrustManager (Object alias, Map env) {		
        if (_strMgr == null) 
            _strMgr = StringManagerFactory.getClientStringManager(SunOneBasicX509TrustManager.class, env);
        _alias = alias;
        _alreadyInvoked = false;
        _lastCertException = null;
        _lastRuntimeException = null;
    }
	
    /**
     * Creates an instance of the SunOneBasicX509TrustManager
     * A date/time stamp is used of the trusted server certificate in the client side 
     *.asadmintruststore
     */
    public SunOneBasicX509TrustManager () {
        this (null, null);
    }
    
	/** Checks if client is trusted given the certificate chain and authorization type string,
	 * e.g. "RSA".
	 * @throws {@link CertificateException}
	 * @throws {@link UnsupportedOperationException}
	 */
	public void checkClientTrusted(X509Certificate[] x509Certificate, String authType) 
        throws CertificateException 
    {
		throw new UnsupportedOperationException("Not Implemented for Client Trust Management");
	}
	
    /**
     * Checs if the server is trusted.
     * @param chain The server certificate to be  validated.
     * @param authType
     * @throws CertificateException
     */    
	public void checkServerTrusted(X509Certificate[] chain, String authType) 
        throws CertificateException 
    {
        //The alreadyInvoked flag keeps track of whether we have already prompted the 
        //user. Unfortunately, checkServerTrusted is called 2x and we want to avoid
        //prompting the user twice. I'm not sure of the root cause of this problem (i.e. 
        //why it is called twice. In addition, we keep track of any exception that occurred
        //on the first invocation and propagate that back.
        if (!_alreadyInvoked) {
            _alreadyInvoked = true;            
            try {
                checkCertificate(chain);                
            } catch (RuntimeException ex) {
                _lastRuntimeException = ex;
                throw ex;
            } catch (CertificateException ex) {
                _lastCertException = ex;
                throw ex;
            } 
        } else {
            if (_lastRuntimeException != null) {
                throw _lastRuntimeException;
            } else if (_lastCertException != null) {
                throw _lastCertException;
            }
        }
	}
	
    public X509Certificate[] getAcceptedIssuers() 
    {
        return ( new X509Certificate[0] );
    }

    /**     
     * @return true if the cert should be displayed and the user asked to confirm it. A 
     * return valie of false indicates that the cert will be implicitly trusted and 
     * added to the asadmin truststore.
     */    
    protected boolean promptForConfirmation()
    {
        return true;
    }
    
    /**
     * If we fail to open the client database using the default password (changeit) or 
     * the password found in  "javax.net.ssl.trustStorePassword" system property,
     * then the fallback behavior is to prompt the user for the password by calling
     * this method.
     * @return the password to the client side truststore
     */    
    protected String promptForPassword() throws IOException
    {
        if (promptForConfirmation()) {
            System.out.print(_strMgr.getString("certificateDbPrompt"));
            BufferedReader r = new BufferedReader(new InputStreamReader(System.in));
            return r.readLine();
        } else {
            return null;
        }
    }

    /**
     * Displays the certificate and prompts the user whether or 
     * not it is trusted.
     * @param c
     * @throws IOException
     * @return true if the user trusts the certificate
     */    
    protected boolean isItOKToAddCertToTrustStore(X509Certificate c) throws IOException
    {	                  
        if (promptForConfirmation()) {
            System.out.println(c.toString());
            System.out.print(_strMgr.getString("certificateTrustPrompt"));
            BufferedReader r = new BufferedReader(new InputStreamReader(System.in));
            String result = r.readLine();
            if (result != null && result.equalsIgnoreCase("y")) {
                return true;
            } else {
                return false;
            }   
        } else {
            return true;
        }        
    }
    
    private String getAliasName()
    {
        String aliasName = _alias != null ? _alias.toString() : "";
        //We append a timestamp to the alias to ensure that it is unqiue.    
        DateFormat f = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG);                    
        aliasName += ":" + f.format(new Date());        
        return aliasName;
    }
   

    /**
     * This function validates the cert and ensures that it is trusted.
     * @param chain
     * @throws RuntimeException
     * @throws CertificateException
     */    
	protected void checkCertificate(X509Certificate[] chain) throws RuntimeException,
        CertificateException, IllegalArgumentException
    {        
        if (chain == null || chain.length == 0) {
            throw new IllegalArgumentException (_strMgr.getString(
                "emptyServerCertificate"));
        } 
        //First ensure that the certificate is valid.
        for (int i = 0 ; i < chain.length ; i ++) {
            chain[i].checkValidity();   
        }
        try {            
            AsadminTruststore truststore = null;
            try {
                truststore = new AsadminTruststore(); 
            } catch (IOException ex) {                    
                //An IOException is thrown when an invalid keystore password is entered.
                //In this case, we prompt the user for the truststore password.                    
                String password = promptForPassword();
                if (password != null) {
                    truststore = new AsadminTruststore(password);
                } else {
                    throw ex;
                }                    
            }
            //if the certificate already exists in the truststore, it is implicitly trusted
            if (!truststore.certificateExists(chain[0])) {
                //if the certificate does not exist in the truststore, then we prompt the
                //user. Upon confirmation from the user, the certificate is added to the 
                //truststore.
                if (isItOKToAddCertToTrustStore(chain[0])) {                            
                    truststore.addCertificate(getAliasName(), chain[0]);
                } else {
                    throw new CertificateException(_strMgr.getString(
                        "serverCertificateNotTrusted"));
                }
            }     
        } catch (CertificateException ex) {
            throw ex;
        } catch (Exception e) {        
            throw new RuntimeException(e);
        }        
	}
}

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