/// <summary>
/// Establish a SSH connection
/// </summary>
/// <param name="socket">TCP socket which is already connected to the server.</param>
/// <param name="param">SSH connection parameter</param>
/// <param name="connectionEventHandlerCreator">a factory function to create a connection event handler (can be null)</param>
/// <param name="protocolEventLoggerCreator">a factory function to create a protocol log event handler (can be null)</param>
/// <returns>new connection object</returns>
public static ISSHConnection Connect(
Socket socket,
SSHConnectionParameter param,
Func <ISSHConnection, ISSHConnectionEventHandler> connectionEventHandlerCreator = null,
Func <ISSHConnection, ISSHProtocolEventLogger> protocolEventLoggerCreator = null)
{
if (socket == null)
{
throw new ArgumentNullException("socket");
}
if (param == null)
{
throw new ArgumentNullException("param");
}
if (!socket.Connected)
{
throw new ArgumentException("socket is not connected to the remote host", "socket");
}
if (param.UserName == null)
{
throw new ArgumentException("UserName property is not set", "param");
}
if (param.AuthenticationType != AuthenticationType.KeyboardInteractive && param.Password == null)
{
throw new ArgumentException("Password property is not set", "param");
}
string clientVersion = SSHUtil.ClientVersionString(param.Protocol);
PlainSocket psocket = new PlainSocket(socket, null);
try {
// receive protocol version string
SSHProtocolVersionReceiver protoVerReceiver = new SSHProtocolVersionReceiver();
protoVerReceiver.Receive(psocket, 5000);
// verify the version string
protoVerReceiver.Verify(param.Protocol);
ISSHConnection sshConnection;
if (param.Protocol == SSHProtocol.SSH1)
{
// create a connection object
var con = new SSH1Connection(
psocket,
param,
protoVerReceiver.ServerVersion,
clientVersion,
connectionEventHandlerCreator,
protocolEventLoggerCreator);
// start receiving loop
psocket.RepeatAsyncRead();
// send client version
con.SendMyVersion();
// establish a SSH connection
con.Connect();
sshConnection = con;
}
else
{
// create a connection object
var con = new SSH2Connection(
psocket,
param,
protoVerReceiver.ServerVersion,
clientVersion,
connectionEventHandlerCreator,
protocolEventLoggerCreator);
// start receiving loop
psocket.RepeatAsyncRead();
// send client version
con.SendMyVersion();
// establish a SSH connection
con.Connect();
sshConnection = con;
}
return(sshConnection);
}
catch (Exception) {
psocket.Close();
throw;
}
}
/// <summary>
/// Establish a SSH connection
/// </summary>
/// <param name="socket">TCP socket which is already connected to the server.</param>
/// <param name="param">SSH connection parameter</param>
/// <param name="connectionEventHandlerCreator">a factory function to create a connection event handler (can be null)</param>
/// <param name="protocolEventLoggerCreator">a factory function to create a protocol log event handler (can be null)</param>
/// <returns>new connection object</returns>
public static ISSHConnection Connect(
Socket socket,
SSHConnectionParameter param,
Func<ISSHConnection, ISSHConnectionEventHandler> connectionEventHandlerCreator = null,
Func<ISSHConnection, ISSHProtocolEventLogger> protocolEventLoggerCreator = null)
{
if (socket == null) {
throw new ArgumentNullException("socket");
}
if (param == null) {
throw new ArgumentNullException("param");
}
if (!socket.Connected) {
throw new ArgumentException("socket is not connected to the remote host", "socket");
}
if (param.UserName == null) {
throw new ArgumentException("UserName property is not set", "param");
}
if (param.AuthenticationType != AuthenticationType.KeyboardInteractive && param.Password == null) {
throw new ArgumentException("Password property is not set", "param");
}
string clientVersion = SSHUtil.ClientVersionString(param.Protocol);
PlainSocket psocket = new PlainSocket(socket, null);
try {
// receive protocol version string
SSHProtocolVersionReceiver protoVerReceiver = new SSHProtocolVersionReceiver();
protoVerReceiver.Receive(psocket, 5000);
// verify the version string
protoVerReceiver.Verify(param.Protocol);
ISSHConnection sshConnection;
if (param.Protocol == SSHProtocol.SSH1) {
// create a connection object
var con = new SSH1Connection(
psocket,
param,
protoVerReceiver.ServerVersion,
clientVersion,
connectionEventHandlerCreator,
protocolEventLoggerCreator);
// start receiving loop
psocket.RepeatAsyncRead();
// send client version
con.SendMyVersion();
// establish a SSH connection
con.Connect();
sshConnection = con;
}
else {
// create a connection object
var con = new SSH2Connection(
psocket,
param,
protoVerReceiver.ServerVersion,
clientVersion,
connectionEventHandlerCreator,
protocolEventLoggerCreator);
// start receiving loop
psocket.RepeatAsyncRead();
// send client version
con.SendMyVersion();
// establish a SSH connection
con.Connect();
sshConnection = con;
}
return sshConnection;
}
catch (Exception) {
psocket.Close();
throw;
}
}
