/*************************************************************************
* Copyright 2009-2015 Eucalyptus Systems, Inc.
*
* 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; version 3 of the License.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*
* Please contact Eucalyptus Systems, Inc., 6755 Hollister Ave., Goleta
* CA 93117, USA or visit http://www.eucalyptus.com/licenses/ if you need
* additional information or have any questions.
*
* This file may incorporate work covered under the following copyright
* and permission notice:
*
* Software License Agreement (BSD License)
*
* Copyright (c) 2008, Regents of the University of California
* All rights reserved.
*
* Redistribution and use of this software in source and binary forms,
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*
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*
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* POSSIBILITY OF SUCH DAMAGE. USERS OF THIS SOFTWARE ACKNOWLEDGE
* THE POSSIBLE PRESENCE OF OTHER OPEN SOURCE LICENSED MATERIAL,
* COPYRIGHTED MATERIAL OR PATENTED MATERIAL IN THIS SOFTWARE,
* AND IF ANY SUCH MATERIAL IS DISCOVERED THE PARTY DISCOVERING
* IT MAY INFORM DR. RICH WOLSKI AT THE UNIVERSITY OF CALIFORNIA,
* SANTA BARBARA WHO WILL THEN ASCERTAIN THE MOST APPROPRIATE REMEDY,
* WHICH IN THE REGENTS' DISCRETION MAY INCLUDE, WITHOUT LIMITATION,
* REPLACEMENT OF THE CODE SO IDENTIFIED, LICENSING OF THE CODE SO
* IDENTIFIED, OR WITHDRAWAL OF THE CODE CAPABILITY TO THE EXTENT
* NEEDED TO COMPLY WITH ANY SUCH LICENSES OR RIGHTS.
************************************************************************/
package com.eucalyptus.postgresql;
import static java.lang.System.getProperty;
import static com.eucalyptus.component.auth.SystemCredentials.lookup;
import static com.eucalyptus.crypto.util.SslUtils.getEnabledCipherSuites;
import static com.google.common.base.Throwables.propagate;
import static com.google.common.collect.Iterables.toArray;
import java.net.Socket;
import java.security.GeneralSecurityException;
import java.util.List;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import com.eucalyptus.component.id.Database;
import com.eucalyptus.crypto.Crypto;
import com.eucalyptus.crypto.util.SSLSocketFactoryWrapper;
import com.eucalyptus.crypto.util.SimpleClientX509TrustManager;
import com.google.common.base.Supplier;
import com.google.common.base.Suppliers;
import com.google.common.collect.ImmutableList;
/**
* SSLSocketFactory for use with PostgreSQL.
*
* <p>This expects the server to use the certificate with the "db" alias.</p>
*/
public class PostgreSQLSSLSocketFactory extends SSLSocketFactoryWrapper {
private static final String PROP_POSTGRESQL_SSL_PROVIDER = "com.eucalyptus.postgresql.sslProvider";
private static final String PROP_POSTGRESQL_SSL_PROTOCOL = "com.eucalyptus.postgresql.sslProtocol";
private static final String PROP_POSTGRESQL_SSL_CIPHER_SUITES = "com.eucalyptus.postgresql.sslCipherSuites";
private static final String DEFAULT_CIPHER_STRINGS = "RSA+AES:+SHA:!EXPORT:!EXPORT1025:!MD5:!ECDHE";
private static final String DEFAULT_PROTOCOL = "TLS";
private static final Supplier<SSLSocketFactory> delegateSupplier = Suppliers.ofInstance( buildDelegate( ) );
private final List<String> cipherSuites;
public PostgreSQLSSLSocketFactory() {
super( delegateSupplier );
this.cipherSuites = ImmutableList.copyOf(getEnabledCipherSuites(getCipherStrings(), getSupportedCipherSuites()));
}
@Override
protected Socket notifyCreated(final Socket socket) {
if ( socket instanceof SSLSocket) {
final SSLSocket sslSocket = (SSLSocket) socket;
sslSocket.setEnabledCipherSuites( toArray(cipherSuites,String.class) );
}
return socket;
}
private static String getCipherStrings() {
return getProperty( PROP_POSTGRESQL_SSL_CIPHER_SUITES, DEFAULT_CIPHER_STRINGS );
}
private static SSLSocketFactory buildDelegate() {
final String provider = getProperty( PROP_POSTGRESQL_SSL_PROVIDER );
final String protocol = getProperty( PROP_POSTGRESQL_SSL_PROTOCOL, DEFAULT_PROTOCOL );
final SSLContext sslContext;
try {
sslContext = provider!=null ?
SSLContext.getInstance( protocol, provider ) :
SSLContext.getInstance( protocol );
final TrustManager trustManager =
new SimpleClientX509TrustManager(lookup(Database.class).getCertificate(), false);
sslContext.init( null, new TrustManager[]{ trustManager }, Crypto.getSecureRandomSupplier( ).get( ) );
return sslContext.getSocketFactory();
} catch ( GeneralSecurityException e ) {
throw propagate(e);
}
}
}