com.mindbright.net.telnet

Class TelnetTerminalAdapter

java.lang.Object

com.mindbright.terminal.TerminalInputChaff

com.mindbright.net.telnet.TelnetTerminalAdapter

All Implemented Interfaces:

TelnetEventHandler, TerminalInputListener, java.lang.Runnable

Direct Known Subclasses:

ModuleTelnetImpl.ChaffedTelnet

public class TelnetTerminalAdapter
extends TerminalInputChaff
implements TelnetEventHandler

Glue class which connects a TerminalWindow to a telnet server.

See Also:

TelnetNVT, TerminalWindow, TerminalInputChaff

Constructor Summary

Constructors

Constructor and Description
TelnetTerminalAdapter(java.io.InputStream in, java.io.OutputStream out, TerminalWindow terminal) Connects the given TerminalWindow to a telnet server at the other end of the provided streams.

Method Summary

Methods

Modifier and Type	Method and Description
TelnetNVT	getTelnetNVT() Get the underlying telnet protocol instance.
void	interpretAsCommand(int cmd) Called to handle some telnet protocol commands from the server.
boolean	isBuffered() Tells if input is sent directly to server (raw mode) or line by line (cooked).
boolean	optionNegotiation(int option, int request) Called to handle option negotiation packets from the server.
void	optionSubNegotiation(int option, byte[] params) Called to handle option negotiation packets from the server.
void	receiveData(byte b) Handle a byte received from the server.
void	sendBreak() Send a break to the terminal server.
void	sendBytes(byte[] b) Send a number of bytes to the server.
void	sendBytesDirect(byte[] b) Send a number of bytes directly to the server.
protected void	sendFakeChar() Send a fake character to the server.
protected void	sendTypedChar(int c) Send a typed char to the server.
void	signalWindowChanged(int rows, int cols, int vpixels, int hpixels) Tell the telnet server that our window has changed size.

Methods inherited from class com.mindbright.terminal.TerminalInputChaff

dispenseChaff, isChaffActive, run, signalTermTypeChanged, startChaff, stopChaff, typedChar, typedChar

Methods inherited from class java.lang.Object

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

Constructor Detail

TelnetTerminalAdapter

public TelnetTerminalAdapter(java.io.InputStream in,
                     java.io.OutputStream out,
                     TerminalWindow terminal)

Connects the given TerminalWindow to a telnet server at the other end of the provided streams.

Parameters:

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

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

terminal - instance of terminal window to connect to

Method Detail

getTelnetNVT

public TelnetNVT getTelnetNVT()

Get the underlying telnet protocol instance.

isBuffered

public boolean isBuffered()

Tells if input is sent directly to server (raw mode) or line by line (cooked).

Returns:

true if input is sent line-by-line

interpretAsCommand

public void interpretAsCommand(int cmd)

Description copied from interface: TelnetEventHandler

Called to handle some telnet protocol commands from the server.

Specified by:

interpretAsCommand in interface TelnetEventHandler

optionSubNegotiation

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

Description copied from interface: TelnetEventHandler

Called to handle option negotiation packets from the server. The implementation is expected to modify its internal state accordingly and reply by invoking the relevant function (like sendOptionSubNegotiation

Specified by:

optionSubNegotiation in interface TelnetEventHandler

Throws:

java.io.IOException

optionNegotiation

public boolean optionNegotiation(int option,
                        int request)
                          throws java.io.IOException

Description copied from interface: TelnetEventHandler

Called to handle option negotiation packets from the server. The implementation is expected to modify its internal state accordingly and reply by invoking the relevant function (like doOption and willOption

Specified by:

optionNegotiation in interface TelnetEventHandler

Throws:

java.io.IOException

receiveData

public void receiveData(byte b)

Description copied from interface: TelnetEventHandler

Handle a byte received from the server.

Specified by:

receiveData in interface TelnetEventHandler

sendTypedChar

protected void sendTypedChar(int c)

Send a typed char to the server. The character may not be sent directly if the terminal is in buffered mode.

Specified by:

sendTypedChar in class TerminalInputChaff

Parameters:

c - typed character

sendFakeChar

protected void sendFakeChar()

Description copied from class: TerminalInputChaff

Send a fake character to the server.

Specified by:

sendFakeChar in class TerminalInputChaff

sendBytes

public void sendBytes(byte[] b)

Send a number of bytes to the server.

Specified by:

sendBytes in interface TerminalInputListener

Parameters:

b - array of bytes representing characters to input

sendBytesDirect

public void sendBytesDirect(byte[] b)

Send a number of bytes directly to the server.

Specified by:

sendBytesDirect in interface TerminalInputListener

Parameters:

b - array of bytes representing characters to send

signalWindowChanged

public void signalWindowChanged(int rows,
                       int cols,
                       int vpixels,
                       int hpixels)

Tell the telnet server that our window has changed size.

Specified by:

signalWindowChanged in interface TerminalInputListener

Parameters:

rows - new number of rows

cols - new number of columns

vpixels - number of verticial pixels

hpixels - number of horizontal pixels

sendBreak

public void sendBreak()

Send a break to the terminal server.

Specified by:

sendBreak in interface TerminalInputListener

Overrides:

sendBreak in class TerminalInputChaff