// 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.apr;
import static streamer.debug.MockServer.Packet.PacketType.CLIENT;
import static streamer.debug.MockServer.Packet.PacketType.SERVER;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.HashMap;
import org.apache.log4j.Logger;
import org.apache.tomcat.jni.Address;
import org.apache.tomcat.jni.Error;
import org.apache.tomcat.jni.Library;
import org.apache.tomcat.jni.Pool;
import org.apache.tomcat.jni.SSL;
import org.apache.tomcat.jni.SSLContext;
import org.apache.tomcat.jni.SSLSocket;
import org.apache.tomcat.jni.Socket;
import streamer.BaseElement;
import streamer.Direction;
import streamer.Element;
import streamer.Event;
import streamer.Pipeline;
import streamer.PipelineImpl;
import streamer.Queue;
import streamer.SocketWrapper;
import streamer.debug.MockServer;
import streamer.debug.MockServer.Packet;
import streamer.ssl.SSLState;
import sun.security.x509.X509CertImpl;
public class AprSocketWrapperImpl extends PipelineImpl implements SocketWrapper {
private static final Logger s_logger = Logger.getLogger(AprSocketWrapperImpl.class);
static {
try {
Library.initialize(null);
SSL.initialize(null);
} catch (Exception e) {
throw new RuntimeException("Cannot load Tomcat Native Library (Apache Portable Runtime).", e);
}
}
private final SSLState sslState;
final long pool = Pool.create(0);
long inetAddress;
long socket;
private AprSocketSource source;
private AprSocketSink sink;
boolean shutdown = false;
private final boolean shutdowned = false;
public AprSocketWrapperImpl(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 AprSocketSource(id + "." + OUT, this);
sink = new AprSocketSink(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
* AprSocketSource stdout link, to watch for incoming data, and
* AprSocketSink stdin link, to pull for outgoing data.
*/
@Override
public void connect(InetSocketAddress address) throws IOException {
try {
inetAddress = Address.info(address.getHostName(), Socket.APR_UNSPEC, address.getPort(), 0, pool);
socket = Socket.create(Address.getInfo(inetAddress).family, Socket.SOCK_STREAM, Socket.APR_PROTO_TCP, pool);
} catch (Exception e) {
throw new IOException("[" + this + "] ERROR: Cannot create socket for \"" + address + "\".", e);
}
int ret = Socket.connect(socket, inetAddress);
if (ret != 0)
throw new IOException("[" + this + "] ERROR: Cannot connect to remote host \"" + address + "\": " + Error.strerror(ret));
source.setSocket(socket);
sink.setSocket(socket);
// 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);
}
@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 validate() {
if (getPads(Direction.IN).size() == 0)
throw new RuntimeException("[ " + this + "] BUG: Input of socket is not connected.");
if (getPads(Direction.OUT).size() == 0)
throw new RuntimeException("[ " + this + "] BUG: Output of socket is not connected.");
}
@Override
public void upgradeToSsl() {
try {
long sslContext;
try {
sslContext = SSLContext.make(pool, SSL.SSL_PROTOCOL_TLSV1, SSL.SSL_MODE_CLIENT);
} catch (Exception e) {
throw new RuntimeException("Cannot create SSL context using Tomcat native library.", e);
}
SSLContext.setOptions(sslContext, SSL.SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS | SSL.SSL_OP_TLS_BLOCK_PADDING_BUG | SSL.SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER
| SSL.SSL_OP_MSIE_SSLV2_RSA_PADDING);
// FIXME: verify certificate by default
SSLContext.setVerify(sslContext, SSL.SSL_CVERIFY_NONE, 0);
int ret;
try {
ret = SSLSocket.attach(sslContext, socket);
} catch (Exception e) {
throw new RuntimeException("[" + this + "] ERROR: Cannot attach SSL context to socket: ", e);
}
if (ret != 0)
throw new RuntimeException("[" + this + "] ERROR: Cannot attach SSL context to socket(" + ret + "): " + SSL.getLastError());
try {
ret = SSLSocket.handshake(socket);
} catch (Exception e) {
throw new RuntimeException("[" + this + "] ERROR: Cannot make SSL handshake with server: ", e);
}
if (ret != 0 && ret != 20014) // 20014: bad certificate signature FIXME: show prompt for self signed certificate
throw new RuntimeException("[" + this + "] ERROR: Cannot make SSL handshake with server(" + ret + "): " + SSL.getLastError());
try {
byte[] key = SSLSocket.getInfoB(socket, SSL.SSL_INFO_CLIENT_CERT);
//*DEBUG*/System.out.println("DEBUG: Server cert:\n"+new ByteBuffer(key).dump());
sslState.serverCertificateSubjectPublicKeyInfo = new X509CertImpl(key).getPublicKey().getEncoded();
} catch (Exception e) {
throw new RuntimeException("[" + this + "] ERROR: Cannot get server public key: ", e);
}
} catch (RuntimeException e) {
shutdown();
throw e;
}
}
@Override
public void shutdown() {
if (shutdown)
return;
shutdown = true;
try {
handleEvent(Event.STREAM_CLOSE, Direction.IN);
} catch (Exception e) {
s_logger.info("[ignored]"
+ "handling stream close event failed on input: " + e.getLocalizedMessage());
}
try {
handleEvent(Event.STREAM_CLOSE, Direction.OUT);
} catch (Exception e) {
s_logger.info("[ignored]"
+ "handling event close event failed on output: " + e.getLocalizedMessage());
}
}
void destroyPull() {
if (shutdowned)
return;
// Causes segfault in AprSocketSource.poll() method, so this function must be called from it
try {
Socket.close(socket);
// or
// Socket.shutdown(socket, Socket.APR_SHUTDOWN_READWRITE);
Pool.destroy(pool);
} catch (Exception e) {
s_logger.info("[ignored]"
+ "failure during network cleanup: " + e.getLocalizedMessage());
}
}
@Override
public String toString() {
return "AprSocketWrapper(" + 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");
AprSocketWrapperImpl socketWrapper = new AprSocketWrapperImpl("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();
socketWrapper.connect(address);
} catch (Exception e) {
e.printStackTrace(System.err);
}
}
}