client/src/main/java/org/apache/qpid/ssl/SSLContextFactory.java

/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache 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.apache.org/licenses/LICENSE-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.apache.qpid.ssl;

import org.apache.qpid.transport.network.security.ssl.QpidClientX509KeyManager;
import org.apache.qpid.transport.network.security.ssl.SSLUtil;

import javax.net.ssl.KeyManager;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;

import java.io.IOException;
import java.security.GeneralSecurityException;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.NoSuchAlgorithmException;

/**
 * Factory used to create SSLContexts. SSL needs to be configured
 * before this will work.
 *
 */
public class SSLContextFactory
{
    private SSLContextFactory()
    {
        //no instances
    }

    public static SSLContext buildClientContext(final TrustManager[] trustManagers, final KeyManager[] keyManagers)
            throws NoSuchAlgorithmException, KeyManagementException
    {
        // Initialize the SSLContext to work with our key managers.
        final SSLContext sslContext = SSLUtil.tryGetSSLContext();

        sslContext.init(keyManagers, trustManagers, null);

        return sslContext;
    }

    public static KeyManager[] getKeyManagers(final String keyStorePath,
                                              final String keyStorePassword,
                                              final String keyStoreType,
                                              final String keyManagerFactoryAlgorithm,
                                              final String certAlias) throws GeneralSecurityException, IOException
    {
        final KeyManager[] keyManagers;
        if (keyStorePath != null)
        {
            if (certAlias != null)
            {
                keyManagers = new KeyManager[] { new QpidClientX509KeyManager(
                        certAlias, keyStorePath, keyStoreType, keyStorePassword,
                        keyManagerFactoryAlgorithm) };
            }
            else
            {
                final KeyStore ks = SSLUtil.getInitializedKeyStore(
                        keyStorePath, keyStorePassword, keyStoreType);

                char[] keyStoreCharPassword = keyStorePassword == null ? null : keyStorePassword.toCharArray();
                // Set up key manager factory to use our key store
                final KeyManagerFactory kmf = KeyManagerFactory
                        .getInstance(keyManagerFactoryAlgorithm);
                kmf.init(ks, keyStoreCharPassword);
                keyManagers = kmf.getKeyManagers();
            }
        }
        else
        {
            keyManagers = null;
        }
        return keyManagers;
    }

    public static TrustManager[] getTrustManagers(final String trustStorePath,
                                                  final String trustStorePassword,
                                                  final String trustStoreType,
                                                  final String trustManagerFactoryAlgorithm)
            throws GeneralSecurityException, IOException
    {
        final TrustManager[] trustManagers;
        if (trustStorePath != null)
        {
            final KeyStore ts = SSLUtil.getInitializedKeyStore(trustStorePath,
                                                               trustStorePassword, trustStoreType);
            final TrustManagerFactory tmf = TrustManagerFactory
                    .getInstance(trustManagerFactoryAlgorithm);
            tmf.init(ts);

            trustManagers = tmf.getTrustManagers();
        }
        else
        {
            trustManagers = null;
        }
        return trustManagers;
    }

}