public void disconnect()
{
if (!m_isConnected)
return;
Channel.disconnect(this);
m_isConnected = false;
PortWatcher.delPort(this);
ChannelForwardedTCPIP.delPort(this);
lock (m_connectThread)
{
m_connectThread.yield();
m_connectThread.Interrupt();
m_connectThread = null;
}
m_thread = null;
try
{
if (m_io != null)
{
if (m_io.m_ins != null)
m_io.m_ins.Close();
if (m_io.m_outs != null)
m_io.m_outs.Close();
if (m_io.m_outs_ext != null)
m_io.m_outs_ext.Close();
}
if (m_proxy == null)
{
if (m_socket != null)
m_socket.Close();
}
else
{
lock (m_proxy)
{
m_proxy.close();
}
m_proxy = null;
}
}
catch { }
m_io = null;
m_socket = null;
m_jsch.removeSession(this);
}
public void Connect(int connectTimeout)
{
if (m_isConnected)
throw new JSchException("session is already connected");
m_io = new IO();
if (m_random == null)
try
{
Class c = Class.ForName(getConfig("random"));
m_random = (Random)(c.Instance());
}
catch (Exception e)
{
throw e;
}
Packet.setRandom(m_random);
try
{
int i, j;
if (m_proxy == null)
{
m_proxy = m_jsch.getProxy(m_host);
if (m_proxy != null)
lock (m_proxy)
{
m_proxy.close();
}
}
if (m_proxy == null)
{
Stream In;
Stream Out;
if (m_socket_factory == null)
{
m_socket = Util.createSocket(m_host, m_port, connectTimeout);
In = m_socket.getInputStream();
Out = m_socket.getOutputStream();
}
else
{
m_socket = m_socket_factory.createSocket(m_host, m_port);
In = m_socket_factory.getInputStream(m_socket);
Out = m_socket_factory.getOutputStream(m_socket);
}
//if(timeout>0){ socket.setSoTimeout(timeout); }
m_socket.setTcpNoDelay(true);
m_io.setInputStream(In);
m_io.setOutputStream(Out);
}
else
lock (m_proxy)
{
m_proxy.connect(m_socket_factory, m_host, m_port, connectTimeout);
m_io.setInputStream(m_proxy.InputStream);
m_io.setOutputStream(m_proxy.OutputStream);
m_socket = m_proxy.Socket;
}
if (connectTimeout > 0 && m_socket != null)
m_socket.setSoTimeout(connectTimeout);
m_isConnected = true;
while (true)
{
i = 0;
j = 0;
while (i < m_buf.m_buffer.Length)
{
j = m_io.getByte();
if (j < 0)
break;
m_buf.m_buffer[i] = (byte)j; i++;
if (j == 10)
break;
}
if (j < 0)
throw new JSchException("connection is closed by foreign host");
if (m_buf.m_buffer[i - 1] == '\n')
{
i--;
if (m_buf.m_buffer[i - 1] == '\r')
i--;
}
if (i > 4
&& (i != m_buf.m_buffer.Length)
&& (m_buf.m_buffer[0] != 'S' || m_buf.m_buffer[1] != 'S' || m_buf.m_buffer[2] != 'H' || m_buf.m_buffer[3] != '-')
)
continue;
if (i == m_buf.m_buffer.Length
|| i < 7 // SSH-1.99 or SSH-2.0
|| (m_buf.m_buffer[4] == '1' && m_buf.m_buffer[6] != '9') // SSH-1.5
)
throw new JSchException("invalid server's version String");
break;
}
m_server_version = new byte[i];
Array.Copy(m_buf.m_buffer, 0, m_server_version, 0, i);
{
// Some Cisco devices will miss to read '\n' if it is sent separately.
byte[] foo = new byte[m_client_version.Length + 1];
Array.Copy(m_client_version, 0, foo, 0, m_client_version.Length);
foo[foo.Length - 1] = (byte)'\n';
m_io.put(foo, 0, foo.Length);
}
m_buf = read(m_buf);
if (m_buf.m_buffer[5] != SSH_MSG_KEXINIT)
throw new JSchException("invalid protocol: " + m_buf.m_buffer[5]);
KeyExchange kex = receive_kexinit(m_buf);
while (true)
{
m_buf = read(m_buf);
if (kex.getState() == m_buf.m_buffer[5])
{
bool result = kex.next(m_buf);
if (!result)
{
m_in_kex = false;
throw new JSchException("verify: " + result);
}
}
else
{
m_in_kex = false;
throw new JSchException("invalid protocol(kex): " + m_buf.m_buffer[5]);
}
if (kex.getState() == KeyExchange.STATE_END)
break;
}
try
{
checkHost(m_host, kex);
}
catch (JSchException ee)
{
m_in_kex = false;
throw ee;
}
send_newkeys();
// receive SSH_MSG_NEWKEYS(21)
m_buf = read(m_buf);
if (m_buf.m_buffer[5] == SSH_MSG_NEWKEYS)
receive_newkeys(m_buf, kex);
else
{
m_in_kex = false;
throw new JSchException("invalid protocol(newkyes): " + m_buf.m_buffer[5]);
}
bool auth = false;
bool auth_cancel = false;
UserAuthNone usn = new UserAuthNone(m_userinfo);
auth = usn.start(this);
string methods = null;
if (!auth)
{
methods = usn.getMethods();
if (methods != null)
methods = methods.ToLowerInvariant();
else
methods = "publickey,password,keyboard-interactive";
}
while (true)
{
while (!auth && methods != null && methods.Length > 0)
{
UserAuth us = null;
if (methods.StartsWith("publickey"))
{
lock (m_jsch.Identities)
{
if (m_jsch.Identities.Count > 0)
us = new UserAuthPublicKey(m_userinfo);
}
}
else if (methods.StartsWith("keyboard-interactive"))
{
if (m_userinfo is UIKeyboardInteractive)
us = new UserAuthKeyboardInteractive(m_userinfo);
}
else if (methods.StartsWith("password"))
us = new UserAuthPassword(m_userinfo);
if (us != null)
{
try
{
auth = us.start(this);
auth_cancel = false;
}
catch (JSchAuthCancelException)
{
auth_cancel = true;
}
catch (JSchPartialAuthException ex)
{
methods = ex.getMethods();
auth_cancel = false;
continue;
}
catch (RuntimeException ee)
{
throw ee;
}
catch (Exception ee)
{
Console.WriteLine("ee: " + ee); // SSH_MSG_DISCONNECT: 2 Too many authentication failures
}
}
if (!auth)
{
int comma = methods.IndexOf(",");
if (comma == -1)
break;
methods = methods.Substring(comma + 1);
}
}
break;
}
if (connectTimeout > 0 || m_timeout > 0)
m_socket.setSoTimeout(m_timeout);
if (auth)
{
m_isAuthed = true;
m_connectThread = new Thread(this);
m_connectThread.Name = "Connect thread " + m_host + " session";
m_connectThread.Start();
return;
}
if (auth_cancel)
throw new JSchException("Auth cancel");
throw new JSchException("Auth fail");
}
catch (Exception e)
{
m_in_kex = false;
if (m_isConnected)
{
try
{
m_packet.reset();
m_buf.putByte((byte)SSH_MSG_DISCONNECT);
m_buf.putInt(3);
m_buf.putString(e.ToString());
m_buf.putString("en");
write(m_packet);
disconnect();
}
catch (Exception)
{ }
}
m_isConnected = false;
if (e is RuntimeException)
throw (RuntimeException)e;
if (e is JSchException)
throw (JSchException)e;
throw new JSchException("Session.connect: " + e);
}
}