internal ChannelForwardedTCPIP()
: base()
{
setLocalWindowSizeMax(LOCAL_WINDOW_SIZE_MAX);
setLocalWindowSize(LOCAL_WINDOW_SIZE_MAX);
setLocalPacketSize(LOCAL_MAXIMUM_PACKET_SIZE);
io = new IO();
connected = true;
}
public override void run()
{
try
{
socket = Util.createSocket(host, port, TIMEOUT);
socket.NoDelay=true;
io = new IO();
io.setInputStream(socket.GetStream());
io.setOutputStream(socket.GetStream());
sendOpenConfirmation();
}
catch //(Exception e)
{
sendOpenFailure(SSH_OPEN_ADMINISTRATIVELY_PROHIBITED);
close = true;
disconnect();
return;
}
thread = Thread.CurrentThread;
Buffer buf = new Buffer(rmpsize);
Packet packet = new Packet(buf);
int i = 0;
try
{
while (thread != null &&
io != null &&
io.In != null)
{
i = io.In.Read(buf.buffer,
14,
buf.buffer.Length - 14
- 32 - 20 // padding and mac
);
if (i <= 0)
{
eof();
break;
}
if (close) break;
packet.reset();
buf.putByte((byte)Session.SSH_MSG_CHANNEL_DATA);
buf.putInt(recipient);
buf.putInt(i);
buf.skip(i);
getSession().write(packet, this, i);
}
}
catch //(Exception e)
{
//Console.Error.WriteLine(e);
}
disconnect();
}
internal ChannelSession()
: base()
{
type = _session;
io = new IO();
}
public void disconnect()
{
if (!isConnected) return;
//Console.Error.WriteLine(this+": disconnect");
//Thread.dumpStack();
if (JSch.getLogger().isEnabled(Logger.INFO))
{
JSch.getLogger().log(Logger.INFO,
"Disconnecting from " + host + " port " + port);
}
/*
for(int i=0; i<Channel.pool.Count; i++){
try{
Channel c=Channel.pool[i];
if(c.session==this) c.eof();
}
catch(Exception e){
}
}
*/
Channel.disconnect(this);
isConnected = false;
PortWatcher.delPort(this);
ChannelForwardedTCPIP.delPort(this);
lock (_lock)
{
if (connectThread != null)
{
Thread.Sleep(1); // .yield();
connectThread.Interrupt();
connectThread = null;
}
}
thread = null;
try
{
if (io != null)
{
if (io.In != null) io.In.Close();
if (io.Out != null) io.Out.Close();
if (io.out_ext != null) io.out_ext.Close();
}
if (proxy == null)
{
if (socket != null)
socket.Close();
}
else
{
lock (proxy)
{
proxy.Close();
}
proxy = null;
}
}
catch //(Exception e)
{
// e.printStackTrace();
}
io = null;
socket = null;
// lock(jsch.pool){
// jsch.pool.Remove(this);
// }
jsch.removeSession(this);
//System.gc();
}
public void connect(int connectTimeout)
{
if (isConnected)
{
throw new JSchException("session is already connected");
}
io = new IO();
if (random == null)
{
try
{
Type c = Type.GetType(getConfig("random"));
random = (Random)(c.newInstance());
}
catch (Exception e)
{
throw new JSchException(e.ToString(), e);
}
}
Packet.setRandom(random);
if (JSch.getLogger().isEnabled(Logger.INFO))
{
JSch.getLogger().log(Logger.INFO,
"Connecting to " + host + " port " + port);
}
try
{
int i, j;
if (proxy == null)
{
Stream In;
Stream Out;
if (socket_factory == null)
{
socket = Util.createSocket(host, port, connectTimeout);
In = socket.GetStream();
Out = socket.GetStream();
}
else
{
socket = socket_factory.createSocket(host, port);
In = socket_factory.GetStream(socket);
Out = socket_factory.GetStream(socket);
}
//if(timeout>0){ socket.setSoTimeout(timeout); }
socket.NoDelay = true;
io.setInputStream(In);
io.setOutputStream(Out);
}
else
{
lock (proxy)
{
proxy.connect(socket_factory, host, port, connectTimeout);
io.setInputStream(proxy.getInputStream());
io.setOutputStream(proxy.getOutputStream());
socket = proxy.getSocket();
}
}
if (connectTimeout > 0 && socket != null)
{
socket.ReceiveTimeout = connectTimeout;
socket.SendTimeout = connectTimeout;
//socket.setSoTimeout(connectTimeout);
}
isConnected = true;
if (JSch.getLogger().isEnabled(Logger.INFO))
{
JSch.getLogger().log(Logger.INFO,
"Connection established");
}
jsch.addSession(this);
{
// Some Cisco devices will miss to read '\n' if it is sent separately.
byte[] foo = new byte[V_C.Length + 1];
Array.Copy(V_C, 0, foo, 0, V_C.Length);
foo[foo.Length - 1] = (byte)'\n';
io.put(foo, 0, foo.Length);
}
while (true)
{
i = 0;
j = 0;
while (i < buf.buffer.Length)
{
j = io.getByte();
if (j < 0) break;
buf.buffer[i] = (byte)j; i++;
if (j == 10) break;
}
if (j < 0)
{
throw new JSchException("connection is closed by foreign host");
}
if (buf.buffer[i - 1] == 10)
{ // 0x0a
i--;
if (i > 0 && buf.buffer[i - 1] == 13)
{ // 0x0d
i--;
}
}
if (i <= 3 ||
((i != buf.buffer.Length) &&
(buf.buffer[0] != 'S' || buf.buffer[1] != 'S' ||
buf.buffer[2] != 'H' || buf.buffer[3] != '-')))
{
// It must not start with 'SSH-'
//Console.Error.WriteLine(Encoding.UTF8.GetString(buf.buffer, 0, i);
continue;
}
if (i == buf.buffer.Length ||
i < 7 || // SSH-1.99 or SSH-2.0
(buf.buffer[4] == '1' && buf.buffer[6] != '9') // SSH-1.5
)
{
throw new JSchException("invalid server's version string");
}
break;
}
V_S = new byte[i]; Array.Copy(buf.buffer, 0, V_S, 0, i);
//Console.Error.WriteLine("V_S: ("+i+") ["+Encoding.UTF8.GetString(V_S)+"]");
if (JSch.getLogger().isEnabled(Logger.INFO))
{
JSch.getLogger().log(Logger.INFO,
"Remote version string: " + Encoding.UTF8.GetString(V_S));
JSch.getLogger().log(Logger.INFO,
"Local version string: " + Encoding.UTF8.GetString(V_C));
}
send_kexinit();
buf = Read(buf);
if (buf.getCommand() != SSH_MSG_KEXINIT)
{
throw new JSchException("invalid protocol: " + buf.getCommand());
}
if (JSch.getLogger().isEnabled(Logger.INFO))
{
JSch.getLogger().log(Logger.INFO,
"SSH_MSG_KEXINIT received");
}
KeyExchange kex = receive_kexinit(buf);
while (true)
{
buf = Read(buf);
if (kex.getState() == buf.getCommand())
{
bool result = kex.next(buf);
if (!result)
{
//Console.Error.WriteLine("verify: "+result);
in_kex = false;
throw new JSchException("verify: " + result);
}
}
else
{
in_kex = false;
throw new JSchException("invalid protocol(kex): " + buf.getCommand());
}
if (kex.getState() == KeyExchange.STATE_END)
{
break;
}
}
try { checkHost(host, port, kex); }
catch (JSchException ee)
{
in_kex = false;
throw ee;
}
send_newkeys();
// receive SSH_MSG_NEWKEYS(21)
buf = Read(buf);
//Console.Error.WriteLine("read: 21 ? "+buf.getCommand());
if (buf.getCommand() == SSH_MSG_NEWKEYS)
{
if (JSch.getLogger().isEnabled(Logger.INFO))
{
JSch.getLogger().log(Logger.INFO,
"SSH_MSG_NEWKEYS received");
}
receive_newkeys(buf, kex);
}
else
{
in_kex = false;
throw new JSchException("invalid protocol(newkyes): " + buf.getCommand());
}
bool auth = false;
bool auth_cancel = false;
UserAuth ua = null;
try
{
Type c = Type.GetType(getConfig("userauth.none"));
ua = (UserAuth)(c.newInstance());
}
catch (Exception e)
{
throw new JSchException(e.ToString(), e);
}
auth = ua.start(this);
string cmethods = getConfig("PreferredAuthentications");
string[] cmethoda = Util.split(cmethods, ",");
string smethods = null;
if (!auth)
{
smethods = ((UserAuthNone)ua).getMethods();
if (smethods != null)
{
smethods = smethods.ToLower();
}
else
{
// methods: publickey,password,keyboard-interactive
//smethods="publickey,password,keyboard-interactive";
smethods = cmethods;
}
}
string[] smethoda = Util.split(smethods, ",");
int methodi = 0;
while (true)
{
loop:
while (!auth &&
cmethoda != null && methodi < cmethoda.Length)
{
string method = cmethoda[methodi++];
bool acceptable = false;
for (int k = 0; k < smethoda.Length; k++)
{
if (smethoda[k].Equals(method))
{
acceptable = true;
break;
}
}
if (!acceptable)
{
continue;
}
if (JSch.getLogger().isEnabled(Logger.INFO))
{
string str = "Authentications that can continue: ";
for (int k = methodi - 1; k < cmethoda.Length; k++)
{
str += cmethoda[k];
if (k + 1 < cmethoda.Length)
str += ",";
}
JSch.getLogger().log(Logger.INFO,
str);
JSch.getLogger().log(Logger.INFO,
"Next authentication method: " + method);
}
ua = null;
try
{
Type c = null;
if (getConfig("userauth." + method) != null)
{
c = Type.GetType(getConfig("userauth." + method));
ua = (UserAuth)(c.newInstance());
}
}
catch
{
if (JSch.getLogger().isEnabled(Logger.WARN))
{
JSch.getLogger().log(Logger.WARN,
"failed to load " + method + " method");
}
}
if (ua != null)
{
auth_cancel = false;
try
{
auth = ua.start(this);
if (auth &&
JSch.getLogger().isEnabled(Logger.INFO))
{
JSch.getLogger().log(Logger.INFO,
"Authentication succeeded (" + method + ").");
}
}
catch (JSchAuthCancelException )
{
auth_cancel = true;
}
catch (JSchPartialAuthException ee)
{
smethods = ee.getMethods();
smethoda = Util.split(smethods, ",");
methodi = 0;
//Console.Error.WriteLine("PartialAuth: "+methods);
auth_cancel = false;
goto loop;
}
/*
catch (RuntimeException ee)
{
throw ee;
}*/
catch //(Exception ee)
{
//Console.Error.WriteLine("ee: "+ee); // SSH_MSG_DISCONNECT: 2 Too many authentication failures
goto outloop;
}
}
}
break;
}
outloop:
if (!auth)
{
if (auth_cancel)
throw new JSchException("Auth cancel");
throw new JSchException("Auth fail");
}
if (connectTimeout > 0 || timeout > 0)
{
socket.SendTimeout = timeout;
socket.ReceiveTimeout = timeout;
//socket.setSoTimeout(timeout);
}
isAuthed = true;
lock (_lock)
{
if (isConnected)
{
connectThread = new Thread(run);
connectThread.Name="Connect thread " + host + " session";
if (daemon_thread)
{
connectThread.IsBackground=daemon_thread;
}
connectThread.Start();
}
else
{
// The session has been already down and
// we don't have to start new thread.
}
}
}
catch (Exception e)
{
in_kex = false;
if (isConnected)
{
try
{
packet.reset();
buf.putByte((byte)SSH_MSG_DISCONNECT);
buf.putInt(3);
buf.putString(e.ToString().getBytes());
buf.putString("en".getBytes());
write(packet);
disconnect();
}
catch //(Exception ee)
{
}
}
isConnected = false;
//e.printStackTrace();
/*if (e is RuntimeException) throw (RuntimeException)e;*/
if (e is JSchException) throw (JSchException)e;
throw new JSchException("Session.connect: " + e);
}
finally
{
Util.bzero(this.password);
this.password = null;
}
}
