ScpTo.cs :  » Network-Clients » SharpSSH » sharpSshTest » jsch_samples » C# / CSharp Open Source

using System;
using Tamir.SharpSsh.jsch;
using System.IO;
using System.Windows.Forms;
using System.Text;

/* ScpTo.cs
 * ====================================================================
 * The following example was posted with the original JSch java library,
 * and is translated to C# to show the usage of SharpSSH JSch API
 * ====================================================================
 * */
namespace sharpSshTest.jsch_samples{
  /// <summary>
  /// This program will demonstrate the file transfer from local to remote.
  /// You will be asked passwd. 
  /// If everything works fine, a local file 'file1' will copied to
  /// 'file2' on 'remotehost'.
  /// </summary>  
  public class ScpTo
  {
    public static void RunExample(String[] arg)
    {
      if(arg.Length!=2)
      {
        Console.WriteLine("usage: java ScpTo file1 user@remotehost:file2");
        Environment.Exit(-1);
      }      

      try
      {

        String lfile=arg[0];
        String user=arg[1].Substring(0, arg[1].IndexOf('@'));
        arg[1]=arg[1].Substring(arg[1].IndexOf('@')+1);
        String host=arg[1].Substring(0, arg[1].IndexOf(':'));
        String rfile=arg[1].Substring(arg[1].IndexOf(':')+1);

        JSch jsch=new JSch();
        Session session=jsch.getSession(user, host, 22);

        // username and password will be given via UserInfo interface.
        UserInfo ui=new MyUserInfo();
        session.setUserInfo(ui);
        session.connect();


        // exec 'scp -t rfile' remotely
        String command="scp -p -t "+rfile;
        Channel channel=session.openChannel("exec");
        ((ChannelExec)channel).setCommand(command);

        // get I/O streams for remote scp
        Stream outs=channel.getOutputStream();
        Stream ins=channel.getInputStream();

        channel.connect();

        byte[] tmp=new byte[1];

        if(checkAck(ins)!=0)
        {
          Environment.Exit(0);
        }

        // send "C0644 filesize filename", where filename should not include '/'
                
        int filesize=(int)(new FileInfo(lfile)).Length;
        command="C0644 "+filesize+" ";
        if(lfile.LastIndexOf('/')>0)
        {
          command+=lfile.Substring(lfile.LastIndexOf('/')+1);
        }
        else
        {
          command+=lfile;
        }
        command+="\n";
        byte[] buff = Util.getBytes(command);
        outs.Write(buff, 0, buff.Length); outs.Flush();

        if(checkAck(ins)!=0)
        {
          Environment.Exit(0);
        }

        // send a content of lfile
        FileStream fis=File.OpenRead(lfile);
        byte[] buf=new byte[1024];
        while(true)
        {
          int len=fis.Read(buf, 0, buf.Length);
          if(len<=0) break;
          outs.Write(buf, 0, len); outs.Flush();
          Console.Write("#");
        }

        // send '\0'
        buf[0]=0; outs.Write(buf, 0, 1); outs.Flush();
        Console.Write(".");

        if(checkAck(ins)!=0)
        {
          Environment.Exit(0);
        }
        Console.WriteLine("OK");
        Environment.Exit(0);
      }
      catch(Exception e)
      {
        Console.WriteLine(e);
      }
    }

    static int checkAck(Stream ins) 
    {
      Console.Write(".");
      int b=ins.ReadByte();
      Console.Write(".");
      // b may be 0 for success,
      //          1 for error,
      //          2 for fatal error,
      //          -1
      if(b==0) return b;
      if(b==-1) return b;

      if(b==1 || b==2)
      {
        StringBuilder sb=new StringBuilder();
        int c;
        do 
        {
          c=ins.ReadByte();
          sb.Append((char)c);
        }
        while(c!='\n');
        if(b==1)
        { // error
          Console.Write(sb.ToString());
        }
        if(b==2)
        { // fatal error
          Console.Write(sb.ToString());
        }
      }
      return b;
    }

    public class MyUserInfo : UserInfo
    {
      public String getPassword(){ return passwd; }
      public bool promptYesNo(String str)
      {
        DialogResult returnVal = MessageBox.Show(
          str,
          "SharpSSH",
          MessageBoxButtons.YesNo,
          MessageBoxIcon.Warning);
        return (returnVal==DialogResult.Yes);
      }
  
      String passwd;
      

      public String getPassphrase(){ return null; }
      public bool promptPassphrase(String message){ return true; }
      public bool promptPassword(String message)
      {
        InputForm passwordField=new InputForm();
        passwordField.Text = message;
        passwordField.PasswordField = true;

        if ( passwordField.PromptForInput() )
        {
          passwd=passwordField.getText();
          return true;
        }
        else{ return false; }
      }
      public void showMessage(String message)
      {
        MessageBox.Show(
          message,
          "SharpSSH",
          MessageBoxButtons.OK,
          MessageBoxIcon.Asterisk);
      }
    }

  }

}