/* Context.java -- SSLContext implementation.
Copyright (C) 2003,2004 Casey Marshall <rsdio@metastatic.org>
This file is a part of Jessie.
Jessie 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; either version 2 of the License, or (at your
option) any later version.
Jessie 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 Jessie; if not, write to the
Free Software Foundation, Inc.,
59 Temple Place, Suite 330,
Boston, MA 02111-1307
USA
Linking this library statically or dynamically with other modules is
making a combined work based on this library. Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.
As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under terms
of your choice, provided that you also meet, for each linked independent
module, the terms and conditions of the license of that module. An
independent module is a module which is not derived from or based on
this library. If you modify this library, you may extend this exception
to your version of the library, but you are not obligated to do so. If
you do not wish to do so, delete this exception statement from your
version. */
package org.metastatic.jessie.provider;
import java.io.File;
import java.io.InputStream;
import java.security.InvalidAlgorithmParameterException;
import java.security.KeyStoreException;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.SecureRandom;
import java.security.Security;
import java.security.UnrecoverableKeyException;
import java.sql.SQLException;
import javax.net.ssl.KeyManager;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContextSpi;
import javax.net.ssl.SSLSessionContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509KeyManager;
import javax.net.ssl.X509TrustManager;
import org.metastatic.jessie.NullManagerParameters;
import org.metastatic.jessie.SRPTrustManager;
import org.metastatic.jessie.StaticTrustAnchors;
/**
* This is Jessie's implementation of a {@link javax.net.ssl.SSLContext}
* engine, and is available under the algorithm names ``SSLv3'', ``SSL'',
* ``TLSv1'', and ``TLS''.
*/
public final class Context extends SSLContextSpi
{
// Fields.
// -------------------------------------------------------------------------
private SessionContext clientSessions;
private SessionContext serverSessions;
private X509KeyManager keyManager;
private X509TrustManager trustManager;
private SRPTrustManager srpTrustManager;
private SecureRandom random;
// Constructor.
// -------------------------------------------------------------------------
public Context()
{
String codec = Util.getSecurityProperty("jessie.clientSessionContext.codec");
String codecClass = null;
if (codec == null)
{
codec = "null";
}
if (codec.equalsIgnoreCase("xml"))
{
codecClass = "org.metastatic.jessie.provider.XMLSessionContext";
}
else if (codec.equalsIgnoreCase("jdbc"))
{
codecClass = "org.metastatic.jessie.provider.JDBCSessionContext";
}
else if (codec.equalsIgnoreCase("null"))
{
codecClass = "org.metastatic.jessie.provider.SessionContext";
}
else
{
throw new IllegalArgumentException("no such codec: " + codec);
}
try
{
ClassLoader cl = Context.class.getClassLoader();
if (cl == null)
{
cl = ClassLoader.getSystemClassLoader();
}
clientSessions = (SessionContext) cl.loadClass(codecClass).newInstance();
}
catch (Exception ex)
{
ex.printStackTrace();
throw new IllegalArgumentException(ex.toString());
}
codec = Util.getSecurityProperty("jessie.serverSessionContext.codec");
if (codec == null)
{
codec = "null";
}
if (codec.equalsIgnoreCase("xml"))
{
codecClass = "org.metastatic.jessie.provider.XMLSessionContext";
}
else if (codec.equalsIgnoreCase("jdbc"))
{
codecClass = "org.metastatic.jessie.provider.JDBCSessionContext";
}
else if (codec.equalsIgnoreCase("null"))
{
codecClass = "org.metastatic.jessie.provider.SessionContext";
}
else
{
throw new IllegalArgumentException("no such codec: " + codec);
}
try
{
ClassLoader cl = Context.class.getClassLoader();
if (cl == null)
{
cl = ClassLoader.getSystemClassLoader();
}
serverSessions = (SessionContext) cl.loadClass(codecClass).newInstance();
}
catch (Exception ex)
{
ex.printStackTrace();
throw new IllegalArgumentException(ex.toString());
}
}
// Engine methods.
// -------------------------------------------------------------------------
protected SSLSessionContext engineGetClientSessionContext()
{
return clientSessions;
}
protected SSLSessionContext engineGetServerSessionContext()
{
return serverSessions;
}
protected javax.net.ssl.SSLServerSocketFactory engineGetServerSocketFactory()
{
if (keyManager == null || (trustManager == null && srpTrustManager == null)
|| random == null)
{
throw new IllegalStateException();
}
return new SSLServerSocketFactory(trustManager, srpTrustManager, keyManager,
random, serverSessions);
}
protected javax.net.ssl.SSLSocketFactory engineGetSocketFactory()
{
if (keyManager == null || trustManager == null || random == null)
{
throw new IllegalStateException();
}
return new SSLSocketFactory(trustManager, keyManager, random, clientSessions);
}
protected void engineInit(KeyManager[] keyManagers,
TrustManager[] trustManagers, SecureRandom random)
throws KeyManagementException
{
keyManager = null;
trustManager = null;
srpTrustManager = null;
if (keyManagers != null)
{
for (int i = 0; i < keyManagers.length; i++)
{
if (keyManagers[i] instanceof X509KeyManager)
{
keyManager = (X509KeyManager) keyManagers[i];
break;
}
}
}
if (keyManager == null)
{
keyManager = defaultKeyManager();
}
if (trustManagers != null)
{
for (int i = 0; i < trustManagers.length; i++)
{
if (trustManagers[i] instanceof X509TrustManager)
{
if (trustManager == null)
{
trustManager = (X509TrustManager) trustManagers[i];
}
}
else if (trustManagers[i] instanceof SRPTrustManager)
{
if (srpTrustManager == null)
{
srpTrustManager = (SRPTrustManager) trustManagers[i];
}
}
}
}
if (trustManager == null && srpTrustManager == null)
{
trustManager = defaultTrustManager();
}
if (random != null)
{
this.random = random;
}
else
{
this.random = defaultRandom();
}
}
// Own methods.
// -------------------------------------------------------------------------
private X509KeyManager defaultKeyManager() throws KeyManagementException
{
KeyManagerFactory fact = null;
try
{
fact = KeyManagerFactory.getInstance("JessieX509", "Jessie");
}
catch (NoSuchAlgorithmException nsae)
{
throw new KeyManagementException();
}
catch (NoSuchProviderException nspe)
{
throw new KeyManagementException();
}
try
{
fact.init(null, null);
return (X509KeyManager) fact.getKeyManagers()[0];
}
catch (NoSuchAlgorithmException nsae) { }
catch (KeyStoreException kse) { }
catch (UnrecoverableKeyException uke) { }
catch (IllegalStateException ise) { }
try
{
fact.init(new NullManagerParameters());
return (X509KeyManager) fact.getKeyManagers()[0];
}
catch (Exception shouldNotHappen)
{
throw new Error(shouldNotHappen.toString());
}
}
private X509TrustManager defaultTrustManager() throws KeyManagementException
{
try
{
TrustManagerFactory fact =
TrustManagerFactory.getInstance("JessieX509", "Jessie");
fact.init(StaticTrustAnchors.CA_CERTS);
return (X509TrustManager) fact.getTrustManagers()[0];
}
catch (NoSuchAlgorithmException nsae)
{
throw new KeyManagementException(nsae.toString());
}
catch (NoSuchProviderException nspe)
{
throw new KeyManagementException(nspe.toString());
}
catch (InvalidAlgorithmParameterException kse)
{
throw new KeyManagementException(kse.toString());
}
}
private SecureRandom defaultRandom() throws KeyManagementException
{
String alg = Util.getSecurityProperty("jessie.secure.random");
if (alg == null)
{
alg = "CSPRNG";
}
SecureRandom rand = null;
try
{
rand = SecureRandom.getInstance(alg);
}
catch (NoSuchAlgorithmException nsae)
{
throw new KeyManagementException(nsae.toString());
}
return rand;
}
}
