DefaultX509TrustManager.java

package ch.cyberduck.core.ssl;

/*
 *  Copyright (c) 2005 David Kocher. All rights reserved.
 *  http://cyberduck.ch/
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  Bug fixes, suggestions and comments should be sent to:
 *  dkocher@cyberduck.ch
 */

import org.apache.log4j.Logger;

import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509TrustManager;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

/**
 * @version $Id: DefaultX509TrustManager.java 3641 2008-03-28 18:14:52Z dkocher $
 */
public class DefaultX509TrustManager implements X509TrustManager {
    private static Logger log = Logger.getLogger(DefaultX509TrustManager.class);

    /**
	 * @uml.property  name="standardTrustManager"
	 * @uml.associationEnd  multiplicity="(1 1)"
	 */
    private X509TrustManager standardTrustManager;

    public DefaultX509TrustManager() {
        try {
            this.init(KeyStore.getInstance(KeyStore.getDefaultType()));
        }
        catch(NoSuchAlgorithmException e) {
            log.error(e.getMessage());
        }
        catch(KeyStoreException e) {
            log.error(e.getMessage());
        }
    }

    protected void init(KeyStore keystore) throws NoSuchAlgorithmException, KeyStoreException {
        TrustManagerFactory factory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
        factory.init(keystore);
        TrustManager[] trustmanagers = factory.getTrustManagers();
        if(trustmanagers.length == 0) {
            throw new NoSuchAlgorithmException("SunX509 trust manager not supported");
        }
        this.standardTrustManager = (X509TrustManager) trustmanagers[0];
    }

    public void checkClientTrusted(X509Certificate[] x509Certificates, String authType)
            throws CertificateException {
        this.standardTrustManager.checkClientTrusted(x509Certificates, authType);
    }

    public void checkServerTrusted(X509Certificate[] x509Certificates, String authType)
            throws CertificateException {
        if((x509Certificates != null)) {
            log.info("Server certificate chain:");
            for(int i = 0; i < x509Certificates.length; i++) {
                log.info("X509Certificate[" + i + "]=" + x509Certificates[i]);
            }
        }
        if((x509Certificates != null) && (x509Certificates.length == 1)) {
            x509Certificates[0].checkValidity();
        }
        else {
            standardTrustManager.checkServerTrusted(x509Certificates, authType);
        }
    }

    public X509Certificate[] getAcceptedIssuers() {
        return this.standardTrustManager.getAcceptedIssuers();
    }
}