EasyX509TrustManager.java

/**********************************************************************************
 * $Id: EasyX509TrustManager.java 105077 2012-02-24 22:54:29Z ottenhoff@longsight.com $
 * $Revision: 105077 $
 * $Date: 2012-02-24 17:54:29 -0500 (Fri, 24 Feb 2012) $
 ***********************************************************************************
 * Copyright (c) 2008, 2009 The Sakai Foundation
 *
 * Licensed under the Educational Community License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.opensource.org/licenses/ECL-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 **********************************************************************************/

package org.sakaiproject.entitybroker.util.http;

import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

/**
 * <p>
 * EasyX509TrustManager unlike default {@link X509TrustManager} accepts 
 * self-signed certificates. 
 * </p>
 * <p>
 * This trust manager SHOULD NOT be used for productive systems 
 * due to security reasons, unless it is a concious decision and 
 * you are perfectly aware of security implications of accepting 
 * self-signed certificates
 * </p>
 * 
 * @author <a href="mailto:adrian.sutton@ephox.com">Adrian Sutton</a>
 * @author <a href="mailto:oleg@ural.ru">Oleg Kalnichevski</a>
 * 
 * <p>
 * DISCLAIMER: HttpClient developers DO NOT actively support this component.
 * The component is provided as a reference material, which may be inappropriate
 * for use without additional customization.
 * </p>
 */

public class EasyX509TrustManager implements X509TrustManager
{
    private X509TrustManager standardTrustManager = null;

    /**
     * Constructor for EasyX509TrustManager.
     */
    public EasyX509TrustManager(KeyStore keystore) throws NoSuchAlgorithmException, KeyStoreException {
        super();
        TrustManagerFactory factory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
        factory.init(keystore);
        TrustManager[] trustmanagers = factory.getTrustManagers();
        if (trustmanagers.length == 0) {
            throw new NoSuchAlgorithmException("no trust manager found");
        }
        this.standardTrustManager = (X509TrustManager)trustmanagers[0];
    }

    /**
     * see javax.net.ssl.X509TrustManager#checkClientTrusted(X509Certificate[],String authType)
     */
    public void checkClientTrusted(X509Certificate[] certificates,String authType) throws CertificateException {
        standardTrustManager.checkClientTrusted(certificates,authType);
    }

    /**
     * see javax.net.ssl.X509TrustManager#checkServerTrusted(X509Certificate[],String authType)
     */
    public void checkServerTrusted(X509Certificate[] certificates,String authType) throws CertificateException {
        if ((certificates != null) && (certificates.length == 1)) {
            certificates[0].checkValidity();
        } else {
            standardTrustManager.checkServerTrusted(certificates,authType);
        }
    }

    /**
     * @see javax.net.ssl.X509TrustManager#getAcceptedIssuers()
     */
    public X509Certificate[] getAcceptedIssuers() {
        return this.standardTrustManager.getAcceptedIssuers();
    }
}