public String start() throws Exception {
authSocket = AprLibrary.createLocalSocketAddress();
pool = Pool.create(AprLibrary.getInstance().getRootPool());
handle = Local.create(authSocket, pool);
int result = Local.bind(handle, 0);
if (result != Status.APR_SUCCESS) {
throwException(result);
}
AprLibrary.secureLocalSocket(authSocket, handle);
result = Local.listen(handle, 0);
if (result != Status.APR_SUCCESS) {
throwException(result);
}
thread =
new Thread() {
public void run() {
try {
while (true) {
long clientSock = Local.accept(handle);
Socket.timeoutSet(clientSock, 10000000);
new SshAgentSession(clientSock, agent);
}
} catch (Exception e) {
e.printStackTrace();
}
}
};
thread.start();
return authSocket;
}
@Override
protected OpenFuture doInit(Buffer buffer) {
OpenFuture f = new DefaultOpenFuture(this);
try {
out =
new ChannelOutputStream(
this, getRemoteWindow(), log, SshConstants.SSH_MSG_CHANNEL_DATA, true);
authSocket = PropertyResolverUtils.getString(this, SshAgent.SSH_AUTHSOCKET_ENV_NAME);
pool = Pool.create(AprLibrary.getInstance().getRootPool());
handle = Local.create(authSocket, pool);
int result = Local.connect(handle, 0);
if (result != Status.APR_SUCCESS) {
throwException(result);
}
ExecutorService service = getExecutorService();
forwardService =
(service == null)
? ThreadUtils.newSingleThreadExecutor("ChannelAgentForwarding[" + authSocket + "]")
: service;
shutdownForwarder = service != forwardService || isShutdownOnExit();
final int copyBufSize =
PropertyResolverUtils.getIntProperty(
this, FORWARDER_BUFFER_SIZE, DEFAULT_FORWARDER_BUF_SIZE);
ValidateUtils.checkTrue(
copyBufSize >= MIN_FORWARDER_BUF_SIZE, "Copy buf size below min.: %d", copyBufSize);
ValidateUtils.checkTrue(
copyBufSize <= MAX_FORWARDER_BUF_SIZE, "Copy buf size above max.: %d", copyBufSize);
forwarder =
forwardService.submit(
() -> {
try {
byte[] buf = new byte[copyBufSize];
while (true) {
int len = Socket.recv(handle, buf, 0, buf.length);
if (len > 0) {
out.write(buf, 0, len);
out.flush();
}
}
} catch (IOException e) {
close(true);
}
});
signalChannelOpenSuccess();
f.setOpened();
} catch (Throwable t) {
Throwable e = GenericUtils.peelException(t);
signalChannelOpenFailure(e);
f.setException(e);
}
return f;
}
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);
}
}
}