SSH連接遠程Linux服務器(C#)

 Granados是一個基於.NET的SSH客戶端庫。它有以下特點：
1.Granados是一個C#的開源項目。源碼地址：http://www.routrek.co.jp/support/download/varaterm/granados200.tar.gz
2.同時支持SSH1和SSH2。
3.Granados實現了AES, Blowfish, TripleDES, RSA, DSA等加密驗證算法。
4.實現TCP協議連接。

如何使用Granados庫

可惜的是Granados的文檔幾乎沒有！所以只有從它的源碼找到它的測試代碼來看。總結步驟爲：

1.工程中添加Routrek.granados.dll(下載的包裏有)的引用。

2.添加Reader類，實現ISSHConnectionEventReceiver和ISSHChannelEventReceiver接口。首先引用命名空間：

using System.Threading;
using System.Diagnostics;
using System.Net;
using System.Net.Sockets;
using Routrek.Crypto;
using Routrek.SSHC;
using Routrek.SSHCV1;
using Routrek.SSHCV2;
using Routrek.Toolkit;
using Routrek.PKI;

Reader類實現如下：

class Reader : ISSHConnectionEventReceiver, ISSHChannelEventReceiver
    {
        public SSHConnection _conn;
        public bool _ready;

        public void OnData(byte[] data, int offset, int length)
        {
            System.Console.Write(Encoding.ASCII.GetString(data, offset, length));
        }
        public void OnDebugMessage(bool always_display, byte[] data)
        {
            Debug.WriteLine("DEBUG: " + Encoding.ASCII.GetString(data));
        }
        public void OnIgnoreMessage(byte[] data)
        {
            Debug.WriteLine("Ignore: " + Encoding.ASCII.GetString(data));
        }
        public void OnAuthenticationPrompt(string[] msg)
        {
            Debug.WriteLine("Auth Prompt " + msg[0]);
        }

        public void OnError(Exception error, string msg)
        {
            Debug.WriteLine("ERROR: " + msg);
        }
        public void OnChannelClosed()
        {
            Debug.WriteLine("Channel closed");
            _conn.Disconnect("");
            //_conn.AsyncReceive(this);
        }
        public void OnChannelEOF()
        {
            _pf.Close();
            Debug.WriteLine("Channel EOF");
        }
        public void OnExtendedData(int type, byte[] data)
        {
            Debug.WriteLine("EXTENDED DATA");
        }
        public void OnConnectionClosed()
        {
            Debug.WriteLine("Connection closed");
        }
        public void OnUnknownMessage(byte type, byte[] data)
        {
            Debug.WriteLine("Unknown Message " + type);
        }
        public void OnChannelReady()
        {
            _ready = true;
        }
        public void OnChannelError(Exception error, string msg)
        {
            Debug.WriteLine("Channel ERROR: " + msg);
        }
        public void OnMiscPacket(byte type, byte[] data, int offset, int length)
        {
        }

        public PortForwardingCheckResult CheckPortForwardingRequest(string host, int port, string originator_host, int originator_port)
        {
            PortForwardingCheckResult r = new PortForwardingCheckResult();
            r.allowed = true;
            r.channel = this;
            return r;
        }
        public void EstablishPortforwarding(ISSHChannelEventReceiver rec, SSHChannel channel)
        {
            _pf = channel;
        }

        public SSHChannel _pf;
    }

3.好的，現在來測試一下：

class Program
    {
        private static SSHConnection _conn;
        static void Main(string[] args)
        {
            SSHConnectionParameter f = new SSHConnectionParameter();
            f.UserName = "root";
            f.Password = "****";
            f.Protocol = SSHProtocol.SSH2;
            f.AuthenticationType = AuthenticationType.Password;
            f.WindowSize = 0x1000;
            Reader reader = new Reader();
            Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            s.Connect(new IPEndPoint(IPAddress.Parse("192.168.x.x"), 22));
            _conn = SSHConnection.Connect(f, reader, s);
            reader._conn = _conn;
            SSHChannel ch = _conn.OpenShell(reader);
            reader._pf = ch;
            SSHConnectionInfo ci = _conn.ConnectionInfo;

            Thread.Sleep(1000);
            
            byte[] b = new byte[1];
            while (true)
            {
                int input = System.Console.Read();
                b[0] = (byte)input;
                reader._pf.Transmit(b);
            }

        }
    }

4.執行效果如下：


5.如果你需要快速的執行某些指定的命令，則可以把上面的

byte[] b = new byte[1];
  while (true)
{
      int input = System.Console.Read();
      b[0] = (byte)input;
      reader._pf.Transmit(b);
}

替換爲：

string cmd = "vi xxx.txt/n";
byte[] data = (new UnicodeEncoding()).GetBytes(cmd);
reader._pf.Transmit(data);