001/*
002 * $HeadURL: file:///opt/dev/not-yet-commons-ssl-SVN-repo/tags/commons-ssl-0.3.17/src/java/org/apache/commons/ssl/Java14TrustManagerWrapper.java $
003 * $Revision: 138 $
004 * $Date: 2008-03-03 23:50:07 -0800 (Mon, 03 Mar 2008) $
005 *
006 * ====================================================================
007 * Licensed to the Apache Software Foundation (ASF) under one
008 * or more contributor license agreements.  See the NOTICE file
009 * distributed with this work for additional information
010 * regarding copyright ownership.  The ASF licenses this file
011 * to you under the Apache License, Version 2.0 (the
012 * "License"); you may not use this file except in compliance
013 * with the License.  You may obtain a copy of the License at
014 *
015 *   http://www.apache.org/licenses/LICENSE-2.0
016 *
017 * Unless required by applicable law or agreed to in writing,
018 * software distributed under the License is distributed on an
019 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
020 * KIND, either express or implied.  See the License for the
021 * specific language governing permissions and limitations
022 * under the License.
023 * ====================================================================
024 *
025 * This software consists of voluntary contributions made by many
026 * individuals on behalf of the Apache Software Foundation.  For more
027 * information on the Apache Software Foundation, please see
028 * <http://www.apache.org/>.
029 *
030 */
031
032package org.apache.commons.ssl;
033
034import javax.net.ssl.X509TrustManager;
035import java.security.cert.CertificateException;
036import java.security.cert.CertificateExpiredException;
037import java.security.cert.X509Certificate;
038
039/**
040 * @author Credit Union Central of British Columbia
041 * @author <a href="http://www.cucbc.com/">www.cucbc.com</a>
042 * @author <a href="mailto:juliusdavies@cucbc.com">juliusdavies@cucbc.com</a>
043 * @since 30-Mar-2006
044 */
045public class Java14TrustManagerWrapper implements X509TrustManager {
046    private final X509TrustManager trustManager;
047    private final TrustChain trustChain;
048    private final SSL ssl;
049
050    public Java14TrustManagerWrapper(X509TrustManager m, TrustChain tc, SSL h) {
051        this.trustManager = m;
052        this.trustChain = tc;
053        this.ssl = h;
054    }
055
056    public void checkClientTrusted(X509Certificate[] chain, String authType)
057        throws CertificateException {
058        ssl.setCurrentClientChain(chain);
059        CertificateException ce = null;
060        try {
061            trustManager.checkClientTrusted(chain, authType);
062        }
063        catch (CertificateException e) {
064            ce = e;
065        }
066        testShouldWeThrow(ce, chain);
067    }
068
069    public void checkServerTrusted(X509Certificate[] chain, String authType)
070        throws CertificateException {
071        ssl.setCurrentServerChain(chain);
072        CertificateException ce = null;
073        try {
074            trustManager.checkServerTrusted(chain, authType);
075        }
076        catch (CertificateException e) {
077            ce = e;
078        }
079        testShouldWeThrow(ce, chain);
080    }
081
082    public X509Certificate[] getAcceptedIssuers() {
083        if (trustChain.containsTrustAll()) {
084            // Counter-intuitively, this means we accept all issuers.
085            return new X509Certificate[0];
086        } else {
087            return trustManager.getAcceptedIssuers();
088        }
089    }
090
091    private void testShouldWeThrow(CertificateException checkException,
092                                   X509Certificate[] chain)
093        throws CertificateException {
094        if (checkException != null) {
095            Throwable root = getRootThrowable(checkException);
096            boolean expiryProblem = root instanceof CertificateExpiredException;
097            if (expiryProblem) {
098                if (ssl.getCheckExpiry()) {
099                    // We're expired, and this factory cares.
100                    throw checkException;
101                }
102            } else {
103                // Probably the cert isn't trusted.  Only let it through if
104                // this factory trusts everything.
105                if (!trustChain.contains(TrustMaterial.TRUST_ALL)) {
106                    throw checkException;
107                }
108            }
109        }
110
111        for (int i = 0; i < chain.length; i++) {
112            X509Certificate c = chain[i];
113            if (ssl.getCheckExpiry()) {
114                c.checkValidity();
115            }
116            if (ssl.getCheckCRL()) {
117                Certificates.checkCRL(c);
118            }
119        }
120    }
121
122    private static Throwable getRootThrowable(Throwable t) {
123        if (t == null) {
124            return t;
125        }
126        Throwable cause = t.getCause();
127        while (cause != null && !t.equals(cause)) {
128            t = cause;
129            cause = t.getCause();
130        }
131        return t;
132    }
133}