com.mindbright.net.telnet

Class TelnetNVT

java.lang.Object

com.mindbright.net.telnet.TelnetNVT

All Implemented Interfaces:

java.lang.Runnable

public class TelnetNVT
extends java.lang.Object
implements java.lang.Runnable

Implements the client side of the telnet protocol (rfc854). This class handles most of the protocol basics. It is meant to be used together with an TelnetEventHandler which gets the actual data received from the other end.

Most of the contants and methods in this class should be fairly obvious to people having deep enough knowledge of rfc854.

See Also:

TelnetEventHandler

Field Summary

Fields

Modifier and Type	Field and Description
static int	CODE_ABORT
static int	CODE_AYT
static int	CODE_BREAK
static int	CODE_CR
static int	CODE_DM
static int	CODE_DO
static int	CODE_DONT
static int	CODE_EC
static int	CODE_EL
static int	CODE_EOR
static int	CODE_GA
static int	CODE_IAC
static int	CODE_IP
static int	CODE_LF
static int	CODE_NOP
static int	CODE_SB
static int	CODE_SE
static int	CODE_WILL
static int	CODE_WONT
static int	OPT_BINARY
static int	OPT_ECHO
static int	OPT_EOR
static int	OPT_NAWS
static int	OPT_NEWENV
static int	OPT_REMFCTL
static int	OPT_SGA
static int	OPT_SPEED
static int	OPT_STATUS
static int	OPT_TTYPE
static int	OPT_XDISP
static int	SB_CMD_IS
static int	SB_CMD_NAME
static int	SB_CMD_REPLY
static int	SB_CMD_SEND

Constructor Summary

Constructors

Constructor and Description
TelnetNVT(TelnetEventHandler eventHandler, java.io.InputStream in, java.io.OutputStream out) Create a new instance of the telnet protocol.

Method Summary

Methods

Modifier and Type	Method and Description
void	dontOption(int option)
void	doOption(int option)
java.lang.Thread	getThread()
protected int	interpretAsCommand(int cmd)
protected void	optionNegotiation(int option, int request)
void	run()
void	sendBreak()
void	sendData(byte[] data)
void	sendData(byte[] data, int off, int sz)
void	sendData(int b)
void	sendOptionSubNegotiation(int option, byte[] params)
void	start()
void	willOption(int option)
void	wontOption(int option)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CODE_LF

public static final int CODE_LF

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Constant Field Values

CODE_CR

public static final int CODE_CR

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Constant Field Values

CODE_EOR

public static final int CODE_EOR

See Also:

Constant Field Values

CODE_SE

public static final int CODE_SE

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Constant Field Values

CODE_NOP

public static final int CODE_NOP

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Constant Field Values

CODE_DM

public static final int CODE_DM

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Constant Field Values

CODE_BREAK

public static final int CODE_BREAK

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Constant Field Values

CODE_IP

public static final int CODE_IP

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Constant Field Values

CODE_ABORT

public static final int CODE_ABORT

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Constant Field Values

CODE_AYT

public static final int CODE_AYT

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Constant Field Values

CODE_EC

public static final int CODE_EC

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Constant Field Values

CODE_EL

public static final int CODE_EL

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Constant Field Values

CODE_GA

public static final int CODE_GA

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Constant Field Values

CODE_SB

public static final int CODE_SB

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Constant Field Values

CODE_WILL

public static final int CODE_WILL

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Constant Field Values

CODE_WONT

public static final int CODE_WONT

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Constant Field Values

CODE_DO

public static final int CODE_DO

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Constant Field Values

CODE_DONT

public static final int CODE_DONT

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Constant Field Values

CODE_IAC

public static final int CODE_IAC

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Constant Field Values

OPT_BINARY

public static final int OPT_BINARY

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Constant Field Values

OPT_ECHO

public static final int OPT_ECHO

See Also:

Constant Field Values

OPT_SGA

public static final int OPT_SGA

See Also:

Constant Field Values

OPT_STATUS

public static final int OPT_STATUS

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Constant Field Values

OPT_TTYPE

public static final int OPT_TTYPE

See Also:

Constant Field Values

OPT_EOR

public static final int OPT_EOR

See Also:

Constant Field Values

OPT_NAWS

public static final int OPT_NAWS

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Constant Field Values

OPT_SPEED

public static final int OPT_SPEED

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Constant Field Values

OPT_REMFCTL

public static final int OPT_REMFCTL

See Also:

Constant Field Values

OPT_XDISP

public static final int OPT_XDISP

See Also:

Constant Field Values

OPT_NEWENV

public static final int OPT_NEWENV

See Also:

Constant Field Values

SB_CMD_IS

public static final int SB_CMD_IS

See Also:

Constant Field Values

SB_CMD_SEND

public static final int SB_CMD_SEND

See Also:

Constant Field Values

SB_CMD_REPLY

public static final int SB_CMD_REPLY

See Also:

Constant Field Values

SB_CMD_NAME

public static final int SB_CMD_NAME

See Also:

Constant Field Values

Constructor Detail

TelnetNVT

public TelnetNVT(TelnetEventHandler eventHandler,
         java.io.InputStream in,
         java.io.OutputStream out)

Create a new instance of the telnet protocol. This will use the given streams to comminucate with the telnet server and pass received data to the given event handler.

Parameters:

eventHandler - event handler which will get the data received

in - stream from which data from the telnet server is read

out - stream over which to send data to the telnet server

Method Detail

start

public void start()

run

public void run()

Specified by:

run in interface java.lang.Runnable

getThread

public java.lang.Thread getThread()

sendData

public void sendData(byte[] data)
              throws java.io.IOException

Throws:

java.io.IOException

sendData

public void sendData(byte[] data,
            int off,
            int sz)
              throws java.io.IOException

Throws:

java.io.IOException

sendData

public void sendData(int b)
              throws java.io.IOException

Throws:

java.io.IOException

sendBreak

public void sendBreak()
               throws java.io.IOException

Throws:

java.io.IOException

doOption

public void doOption(int option)
              throws java.io.IOException

Throws:

java.io.IOException

dontOption

public void dontOption(int option)
                throws java.io.IOException

Throws:

java.io.IOException

willOption

public void willOption(int option)
                throws java.io.IOException

Throws:

java.io.IOException

wontOption

public void wontOption(int option)
                throws java.io.IOException

Throws:

java.io.IOException

sendOptionSubNegotiation

public void sendOptionSubNegotiation(int option,
                            byte[] params)
                              throws java.io.IOException

Throws:

java.io.IOException

optionNegotiation

protected void optionNegotiation(int option,
                     int request)
                          throws java.io.IOException

Throws:

java.io.IOException

interpretAsCommand

protected int interpretAsCommand(int cmd)