EasyX509TrustManager.java

/**
* OLAT - Online Learning and Training<br>
* http://www.olat.org
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Copyright (c) since 2004 at Multimedia- & E-Learning Services (MELS),<br>
* University of Zurich, Switzerland.
* <hr>
* <a href="http://www.openolat.org">
* OpenOLAT - Online Learning and Training</a><br>
* This file has been modified by the OpenOLAT community. Changes are licensed
* under the Apache 2.0 license as the original file.
*/
package org.olat.core.util.httpclient;


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

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * <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;

	/** Log object for this class. */
	private static final Log LOG = LogFactory.getLog(EasyX509TrustManager.class);

	/**
	 * Constructor for EasyX509TrustManager.
	 */
	public EasyX509TrustManager(KeyStore keystore) throws NoSuchAlgorithmException, KeyStoreException {
		super();
		TrustManagerFactory factory = TrustManagerFactory.getInstance("SunX509");
		factory.init(keystore);
		TrustManager[] trustmanagers = factory.getTrustManagers();
		if (trustmanagers.length == 0) { throw new NoSuchAlgorithmException("SunX509 trust manager not supported"); }
		this.standardTrustManager = (X509TrustManager) trustmanagers[0];
	}

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

	/**
	 * @see javax.net.ssl.X509TrustManager#checkServerTrusted(java.security.cert.X509Certificate[], java.lang.String)
	 */
	public void checkServerTrusted(X509Certificate[] certificates, String authType) throws CertificateException {
		if ((certificates != null) && LOG.isDebugEnabled()) {
			LOG.debug("Server certificate chain:");
			for (int i = 0; i < certificates.length; i++) {
				LOG.debug("X509Certificate[" + i + "]=" + certificates[i]);
			}
		}
		if (certificates != null) {
			for (int i = 0; i < certificates.length; i++) {
				X509Certificate certificate = certificates[i];
				try {
					certificate.checkValidity();
				} catch (CertificateException e) {
					LOG.error(e.toString());
					throw e;
				}
			}
		} else {
			this.standardTrustManager.checkServerTrusted(certificates, authType);
		}
	}

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