/// <summary>
/// Starts the ssh connection, and bridge the streams.
/// </summary>
private void StartTunnel()
{
try
{
_client = new SshClient(_config.host, _config.user, new PrivateKeyFile(new MemoryStream(Encoding.Default.GetBytes(PrivateKey))));
_client.Connect();
_client.KeepAliveInterval = new TimeSpan(0, 0, 5);
if (!_client.IsConnected)
{
throw new ServiceException("Can't start tunnel, try again.");
}
string connectHost = string.IsNullOrEmpty(this.LocalHost) ? "127.0.0.1" : this.LocalHost;
_connectionPort = _client.AddForwardedPort<ForwardedPortRemote>((uint)_config.through_port, connectHost, (uint)LocalPort);
_connectionPort.Exception += new EventHandler<ExceptionEventArgs>(fw_Exception);
_connectionPort.RequestReceived += new EventHandler<PortForwardEventArgs>(port_RequestReceived);
_connectionPort.Start();
}
catch (Exception e)
{
throw new ServiceException(e.Message);
}
}
private void Start()
{
iProxyServer.Start(this);
XElement body = new XElement("getaddress");
body.Add(new XElement("uidnode", iDeviceUdn));
XElement tree = CallWebService("getaddress", body.ToString());
if (tree == null)
return;
XElement error = tree.Element("error");
if (error != null)
{
Logger.ErrorFormat("Remote access method {0} failed with error {1}.", "getaddress", error.Value);
return;
}
XElement successElement = tree.Element("success");
XElement sshServerElement = successElement.Element("sshserver");
iSshServerHost = sshServerElement.Element("address").Value;
iSshServerPort = Convert.ToInt32(sshServerElement.Element("port").Value);
XElement portForwardElement = successElement.Element("portforward");
iPortForwardAddress = portForwardElement.Element("address").Value;
iPortForwardPort = (uint)Convert.ToInt32(portForwardElement.Element("port").Value);
if (Environment.OSVersion.Platform.ToString() == "Unix")
{
iSshClientNative = new Process();
ProcessStartInfo startInfo = new ProcessStartInfo
{
WindowStyle = ProcessWindowStyle.Hidden,
FileName = "ssh",
Arguments = String.Format(
"-i {0} -p {1} -R {2}:{3}:{4}:{5} -N {6}@{7} -o StrictHostKeyChecking=no",
FileFullName(kFilePrivateKey), iSshServerPort, iPortForwardAddress,
iPortForwardPort, iNetworkAdapter, iProxyServer.Port, kSshServerUserName,
iSshServerHost)
};
iSshClientNative.StartInfo = startInfo;
iSshClientNative.Start();
}
else
{
PrivateKeyFile pkf = new PrivateKeyFile(FileFullName(kFilePrivateKey));
iSshClient = new SshClient(iSshServerHost, iSshServerPort, kSshServerUserName, pkf);
iSshClient.Connect();
Logger.InfoFormat("Connected to ssh server at {0}:{1}", iSshServerHost, iSshServerPort);
iForwardedPortRemote = new ForwardedPortRemote(iPortForwardAddress, iPortForwardPort, iNetworkAdapter, iProxyServer.Port);
iSshClient.AddForwardedPort(iForwardedPortRemote);
iForwardedPortRemote.Start();
}
Logger.InfoFormat("Forwarded remote port {0}:{1} to {2}:{3}", iPortForwardAddress, iPortForwardPort, iNetworkAdapter, iProxyServer.Port);
iConnectionCheckTimer.Enabled = true;
}
private void Stop()
{
iConnectionCheckTimer.Enabled = false;
iProxyServer.Stop();
if (iSshClient != null)
{
if (iForwardedPortRemote != null)
{
iForwardedPortRemote.Stop();
iForwardedPortRemote.Dispose();
iForwardedPortRemote = null;
}
iSshClient.Dispose();
iSshClient = null;
}
if (iSshClientNative != null)
{
iSshClientNative.Kill();
iSshClientNative.Dispose();
iSshClientNative = null;
}
}
/// <summary>
/// Connect to SSH-Server and open TCP tunnel.
/// </summary>
/// <returns>Returns true on success, else false.</returns>
private bool BuildTunnel()
{
try
{
client = new SshClient(config.SupportHost,
config.SupportPort,
textBoxUsername.Text,
textBoxPassword.Text);
client.ErrorOccurred += new EventHandler<Renci.SshNet.Common.ExceptionEventArgs>(client_ErrorOccurred);
client.KeepAliveInterval = new System.TimeSpan(0, 0, 10);
client.Connect();
client.SendKeepAlive();
var port = new ForwardedPortRemote(IPAddress.Loopback,
config.FwdRemotePort, IPAddress.Loopback, config.FwdLocalPort);
port.Exception += new EventHandler<Renci.SshNet.Common.ExceptionEventArgs>(port_Exception);
port.RequestReceived += new EventHandler<Renci.SshNet.Common.PortForwardEventArgs>(port_RequestReceived);
client.AddForwardedPort(port);
port.Start();
}
catch (System.Exception ex)
{
Log.WriteLine("BuildTunnel() general exception: {0}", ex.Message);
if (client.IsConnected)
{
client.Disconnect();
}
MessageBox.Show(GetCaption("serverLoginError"), GetCaption("loginFailed"),
MessageBoxButtons.OK, MessageBoxIcon.Warning);
return false;
}
return sessionActive = true;
}
