// 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 streamer;
import static streamer.debug.MockServer.Packet.PacketType.CLIENT;
import static streamer.debug.MockServer.Packet.PacketType.SERVER;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.util.HashMap;
import javax.net.SocketFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import streamer.debug.MockServer;
import streamer.debug.MockServer.Packet;
import streamer.ssl.SSLState;
import streamer.ssl.TrustAllX509TrustManager;
public class SocketWrapperImpl extends PipelineImpl implements SocketWrapper {
protected InputStreamSource source;
protected OutputStreamSink sink;
protected Socket socket;
protected InetSocketAddress address;
protected SSLSocket sslSocket;
protected String sslVersionToUse = "TLSv1.2";
protected SSLState sslState;
public SocketWrapperImpl(String id, SSLState sslState) {
super(id);
this.sslState = sslState;
}
@Override
protected HashMap<String, Element> initElementMap(String id) {
HashMap<String, Element> map = new HashMap<String, Element>();
source = new InputStreamSource(id + "." + OUT, this);
sink = new OutputStreamSink(id + "." + IN, this);
// Pass requests to read data to socket input stream
map.put(OUT, source);
// All incoming data, which is sent to this socket wrapper, will be sent
// to socket remote
map.put(IN, sink);
return map;
}
/**
* Connect this socket wrapper to remote server and start main loop on
* IputStreamSource stdout link, to watch for incoming data, and
* OutputStreamSink stdin link, to pull for outgoing data.
*
* @param address
* @throws IOException
*/
@Override
public void connect(InetSocketAddress address) throws IOException {
this.address = address;
// Connect socket to server
socket = SocketFactory.getDefault().createSocket();
try {
socket.connect(address);
InputStream is = socket.getInputStream();
source.setInputStream(is);
OutputStream os = socket.getOutputStream();
sink.setOutputStream(os);
// Start polling for data to send to remote sever
runMainLoop(IN, STDIN, true, true);
// Push incoming data from server to handlers
runMainLoop(OUT, STDOUT, false, false);
} finally {
socket.close();
}
}
@Override
public void handleEvent(Event event, Direction direction) {
switch (event) {
case SOCKET_UPGRADE_TO_SSL:
upgradeToSsl();
break;
default:
super.handleEvent(event, direction);
break;
}
}
@Override
public void upgradeToSsl() {
if (sslSocket != null)
// Already upgraded
return;
if (verbose)
System.out.println("[" + this + "] INFO: Upgrading socket to SSL.");
try {
// Use most secure implementation of SSL available now.
// JVM will try to negotiate TLS1.2, then will fallback to TLS1.0, if
// TLS1.2 is not supported.
SSLContext sslContext = SSLContext.getInstance(sslVersionToUse);
// Trust all certificates (FIXME: insecure)
sslContext.init(null, new TrustManager[] {new TrustAllX509TrustManager(sslState)}, null);
SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();
sslSocket = (SSLSocket)sslSocketFactory.createSocket(socket, address.getHostName(), address.getPort(), true);
sslSocket.startHandshake();
InputStream sis = sslSocket.getInputStream();
source.setInputStream(sis);
OutputStream sos = sslSocket.getOutputStream();
sink.setOutputStream(sos);
} catch (Exception e) {
throw new RuntimeException("Cannot upgrade socket to SSL: " + e.getMessage(), e);
}
}
@Override
public void validate() {
for (Element element : elements.values())
element.validate();
if (get(IN).getPads(Direction.IN).size() == 0)
throw new RuntimeException("[ " + this + "] Input of socket is not connected.");
if (get(OUT).getPads(Direction.OUT).size() == 0)
throw new RuntimeException("[ " + this + "] Output of socket is not connected.");
}
@Override
public void shutdown() {
try {
handleEvent(Event.STREAM_CLOSE, Direction.IN);
} catch (Exception e) {
}
try {
handleEvent(Event.STREAM_CLOSE, Direction.OUT);
} catch (Exception e) {
}
try {
if (sslSocket != null)
sslSocket.close();
} catch (Exception e) {
}
try {
socket.close();
} catch (Exception e) {
}
}
@Override
public String toString() {
return "SocketWrapper(" + id + ")";
}
/**
* Example.
*/
public static void main(String args[]) {
try {
System.setProperty("streamer.Link.debug", "true");
System.setProperty("streamer.Element.debug", "true");
System.setProperty("rdpclient.MockServer.debug", "true");
Pipeline pipeline = new PipelineImpl("echo client");
SocketWrapperImpl socketWrapper = new SocketWrapperImpl("socket", null);
pipeline.add(socketWrapper);
pipeline.add(new BaseElement("echo"));
pipeline.add(new Queue("queue")); // To decouple input and output
pipeline.link("socket", "echo", "queue", "socket");
final byte[] mockData = new byte[] {0x01, 0x02, 0x03};
MockServer server = new MockServer(new Packet[] {new Packet("Server hello") {
{
type = SERVER;
data = mockData;
}
}, new Packet("Client hello") {
{
type = CLIENT;
data = mockData;
}
}, new Packet("Server hello") {
{
type = SERVER;
data = mockData;
}
}, new Packet("Client hello") {
{
type = CLIENT;
data = mockData;
}
}});
server.start();
InetSocketAddress address = server.getAddress();
/*DEBUG*/System.out.println("Address: " + address);
socketWrapper.connect(address);
} catch (Exception e) {
e.printStackTrace(System.err);
}
}
}