| /* |
| * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.ssl; |
| |
| import java.io.IOException; |
| import java.io.PrintStream; |
| import java.security.AccessController; |
| import java.security.AccessControlContext; |
| import java.security.Principal; |
| import java.security.PrivilegedAction; |
| import java.security.SecureRandom; |
| import javax.crypto.SecretKey; |
| |
| /** |
| * A helper class that calls the KerberosClientKeyExchange implementation. |
| */ |
| public class KerberosClientKeyExchange extends HandshakeMessage { |
| |
| private static final String IMPL_CLASS = |
| "sun.security.ssl.krb5.KerberosClientKeyExchangeImpl"; |
| |
| private static final Class<?> implClass = AccessController.doPrivileged( |
| new PrivilegedAction<Class<?>>() { |
| public Class<?> run() { |
| try { |
| return Class.forName(IMPL_CLASS, true, null); |
| } catch (ClassNotFoundException cnf) { |
| return null; |
| } |
| } |
| } |
| ); |
| private final KerberosClientKeyExchange impl = createImpl(); |
| |
| private KerberosClientKeyExchange createImpl() { |
| if (getClass() == KerberosClientKeyExchange.class) { |
| try { |
| return (KerberosClientKeyExchange)implClass.newInstance(); |
| } catch (InstantiationException e) { |
| throw new AssertionError(e); |
| } catch (IllegalAccessException e) { |
| throw new AssertionError(e); |
| } |
| } |
| return null; |
| } |
| |
| public KerberosClientKeyExchange() { |
| // empty |
| } |
| |
| public KerberosClientKeyExchange(String serverName, boolean isLoopback, |
| AccessControlContext acc, ProtocolVersion protocolVersion, |
| SecureRandom rand) throws IOException { |
| |
| if (impl != null) { |
| init(serverName, isLoopback, acc, protocolVersion, rand); |
| } else { |
| throw new IllegalStateException("Kerberos is unavailable"); |
| } |
| } |
| |
| public KerberosClientKeyExchange(ProtocolVersion protocolVersion, |
| ProtocolVersion clientVersion, SecureRandom rand, |
| HandshakeInStream input, SecretKey[] serverKeys) throws IOException { |
| |
| if (impl != null) { |
| init(protocolVersion, clientVersion, rand, input, serverKeys); |
| } else { |
| throw new IllegalStateException("Kerberos is unavailable"); |
| } |
| } |
| |
| @Override |
| int messageType() { |
| return ht_client_key_exchange; |
| } |
| |
| @Override |
| public int messageLength() { |
| return impl.messageLength(); |
| } |
| |
| @Override |
| public void send(HandshakeOutStream s) throws IOException { |
| impl.send(s); |
| } |
| |
| @Override |
| public void print(PrintStream p) throws IOException { |
| impl.print(p); |
| } |
| |
| public void init(String serverName, boolean isLoopback, |
| AccessControlContext acc, ProtocolVersion protocolVersion, |
| SecureRandom rand) throws IOException { |
| |
| if (impl != null) { |
| impl.init(serverName, isLoopback, acc, protocolVersion, rand); |
| } |
| } |
| |
| public void init(ProtocolVersion protocolVersion, |
| ProtocolVersion clientVersion, SecureRandom rand, |
| HandshakeInStream input, SecretKey[] serverKeys) throws IOException { |
| |
| if (impl != null) { |
| impl.init(protocolVersion, clientVersion, rand, input, serverKeys); |
| } |
| } |
| |
| public byte[] getUnencryptedPreMasterSecret() { |
| return impl.getUnencryptedPreMasterSecret(); |
| } |
| |
| public Principal getPeerPrincipal(){ |
| return impl.getPeerPrincipal(); |
| } |
| |
| public Principal getLocalPrincipal(){ |
| return impl.getLocalPrincipal(); |
| } |
| } |