write() public method

public write ( Packet packet ) : void
packet Packet
return void
Beispiel #1
0
		public void request(Session session, Channel channel)
		{
			Buffer buf=new Buffer();
			Packet packet=new Packet(buf);

			bool reply=waitForReply();
			if(reply)
			{
				channel.reply=-1;
			}

			packet.reset();
			buf.putByte((byte)Session.SSH_MSG_CHANNEL_REQUEST);
			buf.putInt(channel.getRecipient());
			buf.putString(Util.getBytes("subsystem"));
			buf.putByte((byte)(waitForReply() ? 1 : 0));
			buf.putString(Util.getBytes("sftp"));
			session.write(packet);

			if(reply)
			{
				while(channel.reply==-1)
				{
					try{System.Threading.Thread.Sleep(10);}
					catch//(Exception ee)
					{
					}
				}
				if(channel.reply==0)
				{
					throw new JSchException("failed to send sftp request");
				}
			}
		}
		public void request(Session session, Channel channel)
		{
			Buffer buf=new Buffer();
			Packet packet=new Packet(buf);

			packet.reset();
			buf.putByte((byte) Session.SSH_MSG_CHANNEL_REQUEST);
			buf.putInt(channel.getRecipient());
			buf.putString( Util.getBytes("signal"));
			buf.putByte((byte)(waitForReply() ? 1 : 0));
			buf.putString(Util.getBytes(signal));
			session.write(packet);
		}
Beispiel #3
0
		public void request(Session session, Channel channel) 
		{
			Buffer buf=new Buffer();
			Packet packet=new Packet(buf);

			// send
			// byte     SSH_MSG_CHANNEL_REQUEST(98)
			// uint32 recipient channel
			// string request type       // "shell"
			// boolean want reply        // 0
			packet.reset();
			buf.putByte((byte) Session.SSH_MSG_CHANNEL_REQUEST);
			buf.putInt(channel.getRecipient());
			buf.putString(Util.getBytes("shell"));
			buf.putByte((byte)(waitForReply() ? 1 : 0));
			session.write(packet);
		}
Beispiel #4
0
        public void request(Session session, Channel channel)
        {
            Buffer buf=new Buffer();
            Packet packet=new Packet(buf);

            packet.reset();
            buf.WriteByte((byte) Session.SSH_MSG_CHANNEL_REQUEST);
            buf.WriteInt(channel.getRecipient());
            buf.WriteString(Util.getBytes("pty-req"));
            buf.WriteByte((byte)(waitForReply() ? 1 : 0));
            buf.WriteString(Util.getBytes("vt100"));
            buf.WriteInt(80);
            buf.WriteInt(24);
            buf.WriteInt(640);
            buf.WriteInt(480);
            buf.WriteString(Util.getBytes(""));
            session.write(packet);
        }
		public void request(Session session, Channel channel)
		{
			Packet packet=session.packet;
			Buffer buf=session.buf;
			// send
			// byte     SSH_MSG_CHANNEL_REQUEST(98)
			// uint32 recipient channel
			// string request type       // "exec"
			// boolean want reply        // 0
			// string command
			packet.reset();
			buf.putByte((byte) Session.SSH_MSG_CHANNEL_REQUEST);
			buf.putInt(channel.getRecipient());
			buf.putString(new Str("exec").getBytes());
			buf.putByte((byte)(waitForReply() ? 1 : 0));
			buf.putString(new Str(command).getBytes());
			session.write(packet);
		}
Beispiel #6
0
		public virtual bool start(Session session)
		{
			Packet packet=session.packet;
			Buffer buf=session.buf;
			// send
			// byte      SSH_MSG_SERVICE_REQUEST(5)
			// string    service name "ssh-userauth"
			packet.reset();
			buf.putByte((byte)Session.SSH_MSG_SERVICE_REQUEST);
			buf.putString(Util.getBytes("ssh-userauth"));
			session.write(packet);

			// receive
			// byte      SSH_MSG_SERVICE_ACCEPT(6)
			// string    service name
			buf=session.read(buf);
			//System.out.println("read: 6 ? "+buf.buffer[5]);
			return buf.buffer[5]==6;
		}
Beispiel #7
0
		public void request(Session session, Channel channel) 
		{
			Buffer buf=new Buffer();
			Packet packet=new Packet(buf);

			// byte      SSH_MSG_CHANNEL_REQUEST(98)
			// uint32 recipient channel
			// string request type        // "x11-req"
			// boolean want reply         // 0
			// boolean   single connection
			// string    x11 authentication protocol // "MIT-MAGIC-COOKIE-1".
			// string    x11 authentication cookie
			// uint32    x11 screen number
			packet.reset();
			buf.WriteByte((byte) Session.SSH_MSG_CHANNEL_REQUEST);
			buf.WriteInt(channel.getRecipient());
			buf.WriteString(Util.getBytes("x11-req"));
			buf.WriteByte((byte)(waitForReply() ? 1 : 0));
			buf.WriteByte((byte)0);
			buf.WriteString(Util.getBytes("MIT-MAGIC-COOKIE-1"));
			buf.WriteString(ChannelX11.getFakedCookie(session));
			buf.WriteInt(0);
			session.write(packet);
		}
        public void request(Session session, Channel channel)
        {
            Buffer buf=new Buffer();
            Packet packet=new Packet(buf);

            //byte      SSH_MSG_CHANNEL_REQUEST
            //uint32    recipient_channel
            //string    "window-change"
            //boolean   FALSE
            //uint32    terminal width, columns
            //uint32    terminal height, rows
            //uint32    terminal width, pixels
            //uint32    terminal height, pixels
            packet.reset();
            buf.WriteByte((byte) Session.SSH_MSG_CHANNEL_REQUEST);
            buf.WriteInt(channel.getRecipient());
            buf.WriteString(Util.getBytes("window-change"));
            buf.WriteByte((byte)(waitForReply() ? 1 : 0));
            buf.WriteInt(width_columns);
            buf.WriteInt(height_rows);
            buf.WriteInt(width_pixels);
            buf.WriteInt(height_pixels);
            session.write(packet);
        }
Beispiel #9
0
		public override void init(Session session,
			byte[] V_S, byte[] V_C, byte[] I_S, byte[] I_C) 
		{
			this.session=session;
			this.V_S=V_S;      
			this.V_C=V_C;      
			this.I_S=I_S;      
			this.I_C=I_C;      

			//    sha=new SHA1();
			//    sha.init();
			try
			{
				Type t=Type.GetType(session.getConfig("sha-1"));
				sha=(HASH)(Activator.CreateInstance(t));
				sha.init();
			}
			catch(Exception ee)
			{
				Console.WriteLine(ee);
			}

			buf=new Buffer();
			packet=new Packet(buf);

			try
			{
				Type t=Type.GetType(session.getConfig("dh"));
				dh=(DH)(Activator.CreateInstance(t));
				dh.init();
			}
			catch(Exception ee)
			{
				throw ee;
			}

			dh.setP(p);
			dh.setG(g);

			// The client responds with:
			// byte  SSH_MSG_KEXDH_INIT(30)
			// mpint e <- g^x mod p
			//         x is a random number (1 < x < (p-1)/2)

			e=dh.getE();

			packet.reset();
			buf.putByte((byte)SSH_MSG_KEXDH_INIT);
			buf.putMPInt(e);
			session.write(packet);

			state=SSH_MSG_KEXDH_REPLY;
		}
Beispiel #10
0
        //private byte[] f;
        public override void init(Session session,
            byte[] V_S, byte[] V_C, byte[] I_S, byte[] I_C)
        {
            this.session = session;
            this.V_S = V_S;
            this.V_C = V_C;
            this.I_S = I_S;
            this.I_C = I_C;

            //    sha=new SHA1();
            //    sha.init();

            try
            {
                Type t = Type.GetType(session.getConfig("sha-1"));
                sha = (HASH) (Activator.CreateInstance(t));
                sha.init();
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
            }

            buf = new Buffer();
            packet = new Packet(buf);

            try
            {
                Type t = Type.GetType(session.getConfig("dh"));
                dh = (DH) (Activator.CreateInstance(t));
                dh.init();
            }
            catch (Exception e)
            {
                throw e;
            }

            packet.reset();
            buf.putByte(0x22);
            buf.putInt(min);
            buf.putInt(preferred);
            buf.putInt(max);
            session.write(packet);

            state = SSH_MSG_KEX_DH_GEX_GROUP;
        }
Beispiel #11
0
		public override bool start(Session session)
		{
			base.start(session);
			//System.out.println("UserAuthNone: start");
			Packet packet=session.packet;
			Buffer buf=session.buf;
			String username=session.username;

			byte[] _username=null;
			try{ _username=Util.getBytesUTF8(username); }
			catch
			{//(java.io.UnsupportedEncodingException e){
				_username=Util.getBytes(username);
			}

			// send
			// byte      SSH_MSG_USERAUTH_REQUEST(50)
			// string    user name
			// string    service name ("ssh-connection")
			// string    "none"
			packet.reset();
			buf.putByte((byte)Session.SSH_MSG_USERAUTH_REQUEST);
			buf.putString(_username);
			buf.putString(Util.getBytes("ssh-connection"));
			buf.putString(Util.getBytes("none"));
			session.write(packet);

			loop:
				while(true)
				{
					// receive
					// byte      SSH_MSG_USERAUTH_SUCCESS(52)
					// string    service name
					buf=session.read(buf);
					//System.out.println("UserAuthNone: read: 52 ? "+    buf.buffer[5]);
					if(buf.buffer[5]==Session.SSH_MSG_USERAUTH_SUCCESS)
					{
						return true;
					}
					if(buf.buffer[5]==Session.SSH_MSG_USERAUTH_BANNER)
					{
						buf.getInt(); buf.getByte(); buf.getByte();
						byte[] _message=buf.getString();
						byte[] lang=buf.getString();
						String message=null;
						try{ message=Util.getStringUTF8(_message); }
						catch
						{//(java.io.UnsupportedEncodingException e){
							message=Util.getString(_message);
						}
						if(userinfo!=null)
						{
							userinfo.showMessage(message);
						}
						goto loop;
					}
					if(buf.buffer[5]==Session.SSH_MSG_USERAUTH_FAILURE)
					{
						buf.getInt(); buf.getByte(); buf.getByte(); 
						byte[] foo=buf.getString();
						int partial_success=buf.getByte();
						methods=Util.getString(foo);
						//System.out.println("UserAuthNONE: "+methods+
						//		   " partial_success:"+(partial_success!=0));
						//	if(partial_success!=0){
						//	  throw new JSchPartialAuthException(new String(foo));
						//	}
						break;
					}
					else
					{
						//      System.out.println("USERAUTH fail ("+buf.buffer[5]+")");
						throw new JSchException("USERAUTH fail ("+buf.buffer[5]+")");
					}
				}
			//throw new JSchException("USERAUTH fail");
			return false;
		}
        public override bool start(Session session)
        {
            //super.start(session);

            //Vector identities=JSch.identities;
            System.Collections.ArrayList identities=session.jsch.identities;

            Packet packet=session.packet;
            Buffer buf=session.buf;

            String passphrase=null;
            String username=session.username;

            byte[] _username=null;
            try{ _username= Util.getBytesUTF8( username); }
            catch
            {//(java.io.UnsupportedEncodingException e){
                _username=Util.getBytes(username);
            }

            for(int i=0; i<identities.Count; i++)
            {
                Identity identity=(Identity)(identities[i]);
                byte[] pubkeyblob=identity.getPublicKeyBlob();

                //System.out.println("UserAuthPublicKey: "+identity+" "+pubkeyblob);

                if(pubkeyblob!=null)
                {
                    // send
                    // byte      SSH_MSG_USERAUTH_REQUEST(50)
                    // string    user name
                    // string    service name ("ssh-connection")
                    // string    "publickey"
                    // boolen    FALSE
                    // string    plaintext password (ISO-10646 UTF-8)
                    packet.reset();
                    buf.WriteByte((byte)Session.SSH_MSG_USERAUTH_REQUEST);
                    buf.WriteString(_username);
                    buf.WriteString(Util.getBytes("ssh-connection"));
                    buf.WriteString(Util.getBytes("publickey"));
                    buf.WriteByte((byte)0);
                    buf.WriteString(Util.getBytes(identity.getAlgName()));
                    buf.WriteString(pubkeyblob);
                    session.write(packet);

                loop1:
                    while(true)
                    {
                        // receive
                        // byte      SSH_MSG_USERAUTH_PK_OK(52)
                        // string    service name
                        buf=session.read(buf);
                        //System.out.println("read: 60 ? "+    buf.buffer[5]);
                        if(buf.buffer[5]==Session.SSH_MSG_USERAUTH_PK_OK)
                        {
                            break;
                        }
                        else if(buf.buffer[5]==Session.SSH_MSG_USERAUTH_FAILURE)
                        {
                            //	System.out.println("USERAUTH publickey "+session.getIdentity()+
                            //			   " is not acceptable.");
                            break;
                        }
                        else if(buf.buffer[5]==Session.SSH_MSG_USERAUTH_BANNER)
                        {
                            buf.ReadInt(); buf.ReadByte(); buf.ReadByte();
                            byte[] _message=buf.ReadString();
                            byte[] lang=buf.ReadString();
                            String message=null;
                            try{ message=Util.getStringUTF8(_message); }
                            catch
                            {//(java.io.UnsupportedEncodingException e){
                                message=Util.getString(_message);
                            }
                            if(userinfo!=null)
                            {
                                userinfo.showMessage(message);
                            }
                            goto loop1;
                        }
                        else
                        {
                            //System.out.println("USERAUTH fail ("+buf.buffer[5]+")");
                            //throw new JSchException("USERAUTH fail ("+buf.buffer[5]+")");
                            break;
                        }
                    }
                    if(buf.buffer[5]!=Session.SSH_MSG_USERAUTH_PK_OK)
                    {
                        continue;
                    }
                }

                //System.out.println("UserAuthPublicKey: identity.isEncrypted()="+identity.isEncrypted());

                int count=5;
                while(true)
                {
                    if((identity.isEncrypted() && passphrase==null))
                    {
                        if(userinfo==null) throw new JSchException("USERAUTH fail");
                        if(identity.isEncrypted() &&
                            !userinfo.promptPassphrase("Passphrase for "+identity.getName()))
                        {
                            throw new JSchAuthCancelException("publickey");
                            //throw new JSchException("USERAUTH cancel");
                            //break;
                        }
                        passphrase=userinfo.getPassphrase();
                    }

                    if(!identity.isEncrypted() || passphrase!=null)
                    {
                        //System.out.println("UserAuthPublicKey: @1 "+passphrase);
                        if(identity.setPassphrase(passphrase))
                            break;
                    }
                    passphrase=null;
                    count--;
                    if(count==0)break;
                }

                //System.out.println("UserAuthPublicKey: identity.isEncrypted()="+identity.isEncrypted());

                if(identity.isEncrypted()) continue;
                if(pubkeyblob==null) pubkeyblob=identity.getPublicKeyBlob();

                //System.out.println("UserAuthPublicKey: pubkeyblob="+pubkeyblob);

                if(pubkeyblob==null) continue;

                // send
                // byte      SSH_MSG_USERAUTH_REQUEST(50)
                // string    user name
                // string    service name ("ssh-connection")
                // string    "publickey"
                // boolen    TRUE
                // string    plaintext password (ISO-10646 UTF-8)
                packet.reset();
                buf.WriteByte((byte)Session.SSH_MSG_USERAUTH_REQUEST);
                buf.WriteString(_username);
                buf.WriteString(Util.getBytes("ssh-connection"));
                buf.WriteString(Util.getBytes("publickey"));
                buf.WriteByte((byte)1);
                buf.WriteString(Util.getBytes(identity.getAlgName()));
                buf.WriteString(pubkeyblob);

                //      byte[] tmp=new byte[buf.index-5];
                //      System.arraycopy(buf.buffer, 5, tmp, 0, tmp.length);
                //      buf.putString(signature);

                byte[] sid=session.getSessionId();
                uint sidlen=(uint)sid.Length;
                byte[] tmp=new byte[4+sidlen+buf.index-5];
                tmp[0]=(byte)(sidlen>>24);
                tmp[1]=(byte)(sidlen>>16);
                tmp[2]=(byte)(sidlen>>8);
                tmp[3]=(byte)(sidlen);
                Array.Copy(sid, 0, tmp, 4, sidlen);
                Array.Copy(buf.buffer, 5, tmp, 4+sidlen, buf.index-5);

                byte[] signature=identity.getSignature(session, tmp);
                if(signature==null)
                {  // for example, too long key length.
                    break;
                }
                buf.WriteString(signature);

                session.write(packet);

            loop2:
                while(true)
                {
                    // receive
                    // byte      SSH_MSG_USERAUTH_SUCCESS(52)
                    // string    service name
                    buf=session.read(buf);
                    //System.out.println("read: 52 ? "+    buf.buffer[5]);
                    if(buf.buffer[5]==Session.SSH_MSG_USERAUTH_SUCCESS)
                    {
                        return true;
                    }
                    else if(buf.buffer[5]==Session.SSH_MSG_USERAUTH_BANNER)
                    {
                        buf.ReadInt(); buf.ReadByte(); buf.ReadByte();
                        byte[] _message=buf.ReadString();
                        byte[] lang=buf.ReadString();
                        String message=null;
                        try{ message=Util.getStringUTF8(_message); }
                        catch
                        {//(java.io.UnsupportedEncodingException e){
                            message=Util.getString(_message);
                        }
                        if(userinfo!=null)
                        {
                            userinfo.showMessage(message);
                        }
                        goto loop2;
                    }
                    else if(buf.buffer[5]==Session.SSH_MSG_USERAUTH_FAILURE)
                    {
                        buf.ReadInt(); buf.ReadByte(); buf.ReadByte();
                        byte[] foo=buf.ReadString();
                        int partial_success=buf.ReadByte();
                        //System.out.println(Encoding.UTF8.GetString(foo)+
                        //                   " partial_success:"+(partial_success!=0));
                        if(partial_success!=0)
                        {
                            throw new JSchPartialAuthException(Util.getString(foo));
                        }
                        break;
                    }
                    //System.out.println("USERAUTH fail ("+buf.buffer[5]+")");
                    //throw new JSchException("USERAUTH fail ("+buf.buffer[5]+")");
                    break;
                }
            }
            return false;
        }
Beispiel #13
0
		internal static void delPort(Session session, int rport)
		{
			lock(pool)
			{
				Object[] foo=null;
				for(int i=0; i<pool.size(); i++)
				{
					Object[] bar=(Object[])(pool.elementAt(i));
					if(bar[0]!=session) continue;
					if(((Integer)bar[1]).intValue()!=rport) continue;
					foo=bar;
					break;
				}
				if(foo==null)return;
				pool.removeElement(foo);	
			}

			Buffer buf=new Buffer(100); // ??
			Packet packet=new Packet(buf);

			try
			{
				// byte SSH_MSG_GLOBAL_REQUEST 80
				// string "cancel-tcpip-forward"
				// boolean want_reply
				// string  address_to_bind (e.g. "127.0.0.1")
				// uint32  port number to bind
				packet.reset();
				buf.putByte((byte) 80/*SSH_MSG_GLOBAL_REQUEST*/);
				buf.putString(new Str("cancel-tcpip-forward").getBytes());
				buf.putByte((byte)0);
				buf.putString(new Str("0.0.0.0").getBytes());
				buf.putInt(rport);
				session.write(packet);
			}
			catch(Exception e)
			{
				//    throw new JSchException(e.toString());
			}
		}
Beispiel #14
0
  public override bool start(Session session) {
//    super.start(session);
//System.out.println("UserAuthPassword: start");
    Packet packet=session.packet;
    Buffer buf=session.buf;
    String username=session.username;
    String password=session.password;
    String dest=username+"@"+session.host;
    if(session.port!=22){
      dest+=(":"+session.port);
    }

    while(true){
      if(password==null){
	if(userinfo==null){
	  //throw new JSchException("USERAUTH fail");
	  return false;
	}
	if(!userinfo.promptPassword("Password for "+dest)){
	  throw new JSchAuthCancelException("password");
	  //break;
	}
	password=userinfo.getPassword();
	if(password==null){
	  throw new JSchAuthCancelException("password");
	  //break;
	}
      }

      byte[] _username=null;
      try{ _username=Util.getBytesUTF8(username); }
      catch{//(java.io.UnsupportedEncodingException e){
	_username=Util.getBytes(username);
      }

      byte[] _password=null;
      try{ _password=Util.getBytesUTF8(password); }
      catch{//(java.io.UnsupportedEncodingException e){
	_password=Util.getBytes(password);
      }

      // send
      // byte      SSH_MSG_USERAUTH_REQUEST(50)
      // string    user name
      // string    service name ("ssh-connection")
      // string    "password"
      // boolen    FALSE
      // string    plaintext password (ISO-10646 UTF-8)
      packet.reset();
      buf.putByte((byte)Session.SSH_MSG_USERAUTH_REQUEST);
      buf.putString(_username);
      buf.putString(Util.getBytes("ssh-connection"));
      buf.putString(Util.getBytes("password"));
      buf.putByte((byte)0);
      buf.putString(_password);
      session.write(packet);

      loop:
      while(true){
	// receive
	// byte      SSH_MSG_USERAUTH_SUCCESS(52)
	// string    service name
	buf=session.read(buf);
	//System.out.println("read: 52 ? "+    buf.buffer[5]);
	if(buf.buffer[5]==Session.SSH_MSG_USERAUTH_SUCCESS){
	  return true;
	}
	if(buf.buffer[5]==Session.SSH_MSG_USERAUTH_BANNER){
	  buf.getInt(); buf.getByte(); buf.getByte();
	  byte[] _message=buf.getString();
	  byte[] lang=buf.getString();
	  String message=null;
	  try{ message=Util.getStringUTF8(_message); }
	  catch{//(java.io.UnsupportedEncodingException e){
	    message=Util.getString(_message);
	  }
	  if(userinfo!=null){
	    userinfo.showMessage(message);
	  }
	  goto loop;
	}
	if(buf.buffer[5]==Session.SSH_MSG_USERAUTH_FAILURE){
	  buf.getInt(); buf.getByte(); buf.getByte(); 
	  byte[] foo=buf.getString();
	  int partial_success=buf.getByte();
	  //System.out.println(new String(foo)+
	  //		 " partial_success:"+(partial_success!=0));
	  if(partial_success!=0){
	    throw new JSchPartialAuthException(Util.getString(foo));
	  }
	  break;
	}
	else{
//        System.out.println("USERAUTH fail ("+buf.buffer[5]+")");
//	  throw new JSchException("USERAUTH fail ("+buf.buffer[5]+")");
	  return false;
	}
      }
      password=null;
    }
    //throw new JSchException("USERAUTH fail");
    //return false;
  }
        public override bool start(Session session)
        {
            //System.out.println("UserAuthKeyboardInteractive: start");
            Packet packet = session.packet;
            Buffer buf = session.buf;
            String username = session.username;
            String dest = username + "@" + session.host;
            if (session.port != 22)
            {
                dest += (":" + session.port);
            }

            bool cancel = false;

            byte[] _username = null;
            try
            {
                _username = Encoding.UTF8.GetBytes(username);
            }
            catch
            {
                _username = Util.getBytes(username);
            }

            while (true)
            {
                // send
                // byte      SSH_MSG_USERAUTH_REQUEST(50)
                // string    user name (ISO-10646 UTF-8, as defined in [RFC-2279])
                // string    service name (US-ASCII) "ssh-userauth" ? "ssh-connection"
                // string    "keyboard-interactive" (US-ASCII)
                // string    language tag (as defined in [RFC-3066])
                // string    submethods (ISO-10646 UTF-8)
                packet.reset();
                buf.putByte((byte) Session.SSH_MSG_USERAUTH_REQUEST);
                buf.putString(_username);
                buf.putString(Util.getBytes("ssh-connection"));
                //buf.putString("ssh-userauth".getBytes());
                buf.putString(Util.getBytes("keyboard-interactive"));
                buf.putString(Util.getBytes(""));
                buf.putString(Util.getBytes(""));
                session.write(packet);

                bool firsttime = true;
                loop:
                while (true)
                {
                    // receive
                    // byte      SSH_MSG_USERAUTH_SUCCESS(52)
                    // string    service name
                    try
                    {
                        buf = session.read(buf);
                    }
                    catch (JSchException e)
                    {
                        e.GetType();
                        return false;
                    }
                    catch (IOException e)
                    {
                        e.GetType();
                        return false;
                    }
                    //System.out.println("read: 52 ? "+    buf.buffer[5]);
                    if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_SUCCESS)
                    {
                        return true;
                    }
                    if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_BANNER)
                    {
                        buf.getInt();
                        buf.getByte();
                        buf.getByte();
                        byte[] _message = buf.getString();
                        byte[] lang = buf.getString();
                        String message = null;
                        try
                        {
                            message = Util.getStringUTF8(_message);
                        }
                        catch
                        {
                            message = Util.getString(_message);
                        }
                        if (userinfo != null)
                        {
                            userinfo.showMessage(message);
                        }
                        goto loop;
                    }
                    if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_FAILURE)
                    {
                        buf.getInt();
                        buf.getByte();
                        buf.getByte();
                        byte[] foo = buf.getString();
                        int partial_success = buf.getByte();
            //	  System.out.println(new String(foo)+
            //			     " partial_success:"+(partial_success!=0));

                        if (partial_success != 0)
                        {
                            throw new JSchPartialAuthException(Util.getString(foo));
                        }

                        if (firsttime)
                        {
                            throw new JSchException("USERAUTH KI is not supported");
                            //return false;
                            //cancel=true;  // ??
                        }
                        break;
                    }
                    if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_INFO_REQUEST)
                    {
                        firsttime = false;
                        buf.getInt();
                        buf.getByte();
                        buf.getByte();
                        String name = Util.getString(buf.getString());
                        String instruction = Util.getString(buf.getString());
                        String languate_tag = Util.getString(buf.getString());
                        int num = buf.getInt();
            //System.out.println("name: "+name);
            //System.out.println("instruction: "+instruction);
            //System.out.println("lang: "+languate_tag);
            //System.out.println("num: "+num);
                        String[] prompt = new String[num];
                        bool[] echo = new bool[num];
                        for (int i = 0; i < num; i++)
                        {
                            prompt[i] = Util.getString(buf.getString());
                            echo[i] = (buf.getByte() != 0);
            //System.out.println("  "+prompt[i]+","+echo[i]);
                        }

                        String[] response = null;
                        if (num > 0
                            || (name.Length > 0 || instruction.Length > 0)
                            )
                        {
                            UIKeyboardInteractive kbi = (UIKeyboardInteractive) userinfo;
                            if (userinfo != null)
                            {
                                response = kbi.promptKeyboardInteractive(dest,
                                                                         name,
                                                                         instruction,
                                                                         prompt,
                                                                         echo);
                            }
                        }
                        // byte      SSH_MSG_USERAUTH_INFO_RESPONSE(61)
                        // int       num-responses
                        // string    response[1] (ISO-10646 UTF-8)
                        // ...
                        // string    response[num-responses] (ISO-10646 UTF-8)
            //if(response!=null)
            //System.out.println("response.length="+response.length);
            //else
            //System.out.println("response is null");
                        packet.reset();
                        buf.putByte((byte) Session.SSH_MSG_USERAUTH_INFO_RESPONSE);
                        if (num > 0 &&
                            (response == null || // cancel
                             num != response.Length))
                        {
                            buf.putInt(0);
                            if (response == null)
                                cancel = true;
                        }
                        else
                        {
                            buf.putInt(num);
                            for (int i = 0; i < num; i++)
                            {
            //System.out.println("response: |"+response[i]+"| <- replace here with **** if you need");
                                buf.putString(Util.getBytes(response[i]));
                            }
                        }
                        session.write(packet);
                        if (cancel)
                            break;
            //System.out.println("continue loop");
                        goto loop;
                    }
                    //throw new JSchException("USERAUTH fail ("+buf.buffer[5]+")");
                    return false;
                }
                if (cancel)
                {
                    throw new JSchAuthCancelException("keyboard-interactive");
                    //break;
                }
            }
            //return false;
        }
		internal static void delPort(Session session, int rport)
		{
			lock(pool)
			{
				Object[] foo=null;
				for(int i=0; i<pool.Count; i++)
				{
					Object[] bar=(Object[])(pool[i]);
					if (bar[0] != session) continue;
					if ((int)bar[1] != rport) continue;
					foo=bar;
					break;
				}
				if(foo==null)return;
				pool.Remove(foo);	
			}

			Buffer buf=new Buffer(100); // ??
			Packet packet=new Packet(buf);

			try
			{
				// byte SSH_MSG_GLOBAL_REQUEST 80
				// string "cancel-tcpip-forward"
				// boolean want_reply
				// string  address_to_bind (e.g. "127.0.0.1")
				// uint32  port number to bind
				packet.reset();
				buf.WriteByte((byte) 80/*SSH_MSG_GLOBAL_REQUEST*/);
				buf.WriteString(Encoding.UTF8.GetBytes("cancel-tcpip-forward"));
				buf.WriteByte((byte)0);
				buf.WriteString(Encoding.UTF8.GetBytes("0.0.0.0"));
				buf.WriteInt(rport);
				session.write(packet);
			}
			catch(Exception)
			{
				//    throw new JSchException(e.toString());
			}
		}