Package org.apache.commons.net.telnet

Class Telnet

java.lang.Object

org.apache.commons.net.SocketClient

org.apache.commons.net.telnet.Telnet

Direct Known Subclasses:

TelnetClient

class Telnet
extends SocketClient

Field Summary

Fields

Modifier and Type	Field	Description
private TelnetNotificationHandler	__notifhand	The notification handler
(package private) static byte[]	_COMMAND_AYT	AYT sequence
(package private) static byte[]	_COMMAND_DO
(package private) static byte[]	_COMMAND_DONT
(package private) static byte[]	_COMMAND_IS	Is sequence (for subnegotiation)
(package private) static byte[]	_COMMAND_SB
(package private) static byte[]	_COMMAND_SE
(package private) static byte[]	_COMMAND_WILL
(package private) static byte[]	_COMMAND_WONT
(package private) static int	_DO_MASK
(package private) int[]	_doResponse
(package private) int[]	_options
(package private) static int	_REQUESTED_DO_MASK
(package private) static int	_REQUESTED_WILL_MASK
(package private) static int	_WILL_MASK
(package private) int[]	_willResponse
private boolean	aytFlag	flag for AYT
private java.lang.Object	aytMonitor	monitor to wait for AYT
(package private) static boolean	debug
(package private) static boolean	debugoptions
(package private) static int	DEFAULT_PORT
private TelnetOptionHandler[]	optionHandlers	Array of option handlers
private java.io.OutputStream	spyStream	The stream on which to spy
protected static int	TERMINAL_TYPE	Terminal type option
protected static int	TERMINAL_TYPE_IS	Is (for subnegotiation)
protected static int	TERMINAL_TYPE_SEND	Send (for subnegotiation)
private java.lang.String	terminalType	Terminal type

Fields inherited from class org.apache.commons.net.SocketClient

_defaultPort_, _hostname_, _input_, _output_, _serverSocketFactory_, _socket_, _socketFactory_, _timeout_, connectTimeout, NETASCII_EOL

Constructor Summary

Constructors

Constructor	Description
Telnet()	Empty Constructor
Telnet(java.lang.String termtype)	This constructor lets you specify the terminal type.

Method Summary

Modifier and Type	Method	Description
protected void	_connectAction_()	Called upon connection.
(package private) void	_processAYTResponse()	Processes the response of an AYT
(package private) void	_processCommand(int command)	Processes a COMMAND.
(package private) void	_processDo(int option)	Processes a DO request.
(package private) void	_processDont(int option)	Processes a DONT request.
(package private) void	_processSuboption(int[] suboption, int suboptionLength)	Processes a suboption negotiation.
(package private) void	_processWill(int option)	Processes a WILL request.
(package private) void	_processWont(int option)	Processes a WONT request.
(package private) void	_registerSpyStream(java.io.OutputStream spystream)	Registers an OutputStream for spying what's going on in the Telnet session.
(package private) void	_requestDo(int option)	Requests a DO.
(package private) void	_requestDont(int option)	Requests a DONT.
(package private) boolean	_requestedDo(int option)	Looks for the state of the option.
(package private) boolean	_requestedDont(int option)	Looks for the state of the option.
(package private) boolean	_requestedWill(int option)	Looks for the state of the option.
(package private) boolean	_requestedWont(int option)	Looks for the state of the option.
(package private) void	_requestWill(int option)	Requests a WILL.
(package private) void	_requestWont(int option)	Requests a WONT.
(package private) boolean	_sendAYT(long timeout)	Sends an Are You There sequence and waits for the result.
(package private) void	_sendByte(int b)	Sends a byte.
(package private) void	_sendCommand(byte cmd)	Sends a command, automatically adds IAC prefix and flushes the output.
(package private) void	_sendDo(int option)	Sends a DO.
(package private) void	_sendDont(int option)	Sends a DONT.
(package private) void	_sendSubnegotiation(int[] subn)	Manages subnegotiation for Terminal Type.
(package private) void	_sendTerminalType()	Sends terminal type information.
(package private) void	_sendWill(int option)	Sends a WILL.
(package private) void	_sendWont(int option)	Sends a WONT.
(package private) void	_setDo(int option)	Sets the state of the option.
(package private) void	_setDont(int option)	Sets the state of the option.
(package private) void	_setWantDo(int option)	Sets the state of the option.
(package private) void	_setWantDont(int option)	Sets the state of the option.
(package private) void	_setWantWill(int option)	Sets the state of the option.
(package private) void	_setWantWont(int option)	Sets the state of the option.
(package private) void	_setWill(int option)	Sets the state of the option.
(package private) void	_setWont(int option)	Sets the state of the option.
(package private) void	_spyRead(int ch)	Sends a read char on the spy stream.
(package private) void	_spyWrite(int ch)	Sends a written char on the spy stream.
(package private) boolean	_stateIsDo(int option)	Looks for the state of the option.
(package private) boolean	_stateIsDont(int option)	Looks for the state of the option.
(package private) boolean	_stateIsWill(int option)	Looks for the state of the option.
(package private) boolean	_stateIsWont(int option)	Looks for the state of the option.
(package private) void	_stopSpyStream()	Stops spying this Telnet.
(package private) void	addOptionHandler(TelnetOptionHandler opthand)	Registers a new TelnetOptionHandler for this telnet to use.
(package private) void	deleteOptionHandler(int optcode)	Unregisters a TelnetOptionHandler.
void	registerNotifHandler(TelnetNotificationHandler notifhand)	Registers a notification handler to which will be sent notifications of received telnet option negotiation commands.
void	unregisterNotifHandler()	Unregisters the current notification handler.

Methods inherited from class org.apache.commons.net.SocketClient

addProtocolCommandListener, connect, connect, connect, connect, connect, connect, createCommandSupport, disconnect, fireCommandSent, fireReplyReceived, getCharset, getCharsetName, getCommandSupport, getConnectTimeout, getDefaultPort, getDefaultTimeout, getKeepAlive, getLocalAddress, getLocalPort, getProxy, getReceiveBufferSize, getRemoteAddress, getRemotePort, getSendBufferSize, getServerSocketFactory, getSoLinger, getSoTimeout, getTcpNoDelay, isAvailable, isConnected, removeProtocolCommandListener, setCharset, setConnectTimeout, setDefaultPort, setDefaultTimeout, setKeepAlive, setProxy, setReceiveBufferSize, setSendBufferSize, setServerSocketFactory, setSocketFactory, setSoLinger, setSoTimeout, setTcpNoDelay, verifyRemote

Methods inherited from class java.lang.Object

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

Field Detail

debug

static final boolean debug

See Also:

Constant Field Values

debugoptions

static final boolean debugoptions

See Also:

Constant Field Values

_COMMAND_DO

static final byte[] _COMMAND_DO

_COMMAND_DONT

static final byte[] _COMMAND_DONT

_COMMAND_WILL

static final byte[] _COMMAND_WILL

_COMMAND_WONT

static final byte[] _COMMAND_WONT

_COMMAND_SB

static final byte[] _COMMAND_SB

_COMMAND_SE

static final byte[] _COMMAND_SE

_WILL_MASK

static final int _WILL_MASK

See Also:

Constant Field Values

_DO_MASK

static final int _DO_MASK

See Also:

Constant Field Values

_REQUESTED_WILL_MASK

static final int _REQUESTED_WILL_MASK

See Also:

Constant Field Values

_REQUESTED_DO_MASK

static final int _REQUESTED_DO_MASK

See Also:

Constant Field Values

DEFAULT_PORT

static final int DEFAULT_PORT

See Also:

Constant Field Values

_doResponse

int[] _doResponse

_willResponse

int[] _willResponse

_options

int[] _options

TERMINAL_TYPE

protected static final int TERMINAL_TYPE

Terminal type option

See Also:

Constant Field Values

TERMINAL_TYPE_SEND

protected static final int TERMINAL_TYPE_SEND

Send (for subnegotiation)

See Also:

Constant Field Values

TERMINAL_TYPE_IS

protected static final int TERMINAL_TYPE_IS

Is (for subnegotiation)

See Also:

Constant Field Values

_COMMAND_IS

static final byte[] _COMMAND_IS

Is sequence (for subnegotiation)

terminalType

private java.lang.String terminalType

Terminal type

optionHandlers

private final TelnetOptionHandler[] optionHandlers

Array of option handlers

_COMMAND_AYT

static final byte[] _COMMAND_AYT

AYT sequence

aytMonitor

private final java.lang.Object aytMonitor

monitor to wait for AYT

aytFlag

private volatile boolean aytFlag

flag for AYT

spyStream

private volatile java.io.OutputStream spyStream

The stream on which to spy

__notifhand

private TelnetNotificationHandler __notifhand

The notification handler

Constructor Detail

Telnet

Telnet()

Empty Constructor

Telnet

Telnet(java.lang.String termtype)

This constructor lets you specify the terminal type.

Parameters:

termtype - - terminal type to be negotiated (ej. VT100)

Method Detail

_stateIsWill

boolean _stateIsWill(int option)

Looks for the state of the option.

Parameters:

option - - option code to be looked up.

Returns:

returns true if a will has been acknowledged

_stateIsWont

boolean _stateIsWont(int option)

Looks for the state of the option.

Parameters:

option - - option code to be looked up.

Returns:

returns true if a wont has been acknowledged

_stateIsDo

boolean _stateIsDo(int option)

Looks for the state of the option.

Parameters:

option - - option code to be looked up.

Returns:

returns true if a do has been acknowledged

_stateIsDont

boolean _stateIsDont(int option)

Looks for the state of the option.

Parameters:

option - - option code to be looked up.

Returns:

returns true if a dont has been acknowledged

_requestedWill

boolean _requestedWill(int option)

Looks for the state of the option.

Parameters:

option - - option code to be looked up.

Returns:

returns true if a will has been reuqested

_requestedWont

boolean _requestedWont(int option)

Looks for the state of the option.

Parameters:

option - - option code to be looked up.

Returns:

returns true if a wont has been reuqested

_requestedDo

boolean _requestedDo(int option)

Looks for the state of the option.

Parameters:

option - - option code to be looked up.

Returns:

returns true if a do has been reuqested

_requestedDont

boolean _requestedDont(int option)

Looks for the state of the option.

Parameters:

option - - option code to be looked up.

Returns:

returns true if a dont has been reuqested

_setWill

void _setWill(int option)
       throws java.io.IOException

Sets the state of the option.

Parameters:

option - - option code to be set.

Throws:

java.io.IOException

_setDo

void _setDo(int option)
     throws java.io.IOException

Sets the state of the option.

Parameters:

option - - option code to be set.

Throws:

java.io.IOException

_setWantWill

void _setWantWill(int option)

Sets the state of the option.

Parameters:

option - - option code to be set.

_setWantDo

void _setWantDo(int option)

Sets the state of the option.

Parameters:

option - - option code to be set.

_setWont

void _setWont(int option)

Sets the state of the option.

Parameters:

option - - option code to be set.

_setDont

void _setDont(int option)

Sets the state of the option.

Parameters:

option - - option code to be set.

_setWantWont

void _setWantWont(int option)

Sets the state of the option.

Parameters:

option - - option code to be set.

_setWantDont

void _setWantDont(int option)

Sets the state of the option.

Parameters:

option - - option code to be set.

_processCommand

void _processCommand(int command)

Processes a COMMAND.

Parameters:

command - - option code to be set.

_processDo

void _processDo(int option)
         throws java.io.IOException

Processes a DO request.

Parameters:

option - - option code to be set.

Throws:

java.io.IOException - - Exception in I/O.

_processDont

void _processDont(int option)
           throws java.io.IOException

Processes a DONT request.

Parameters:

option - - option code to be set.

Throws:

java.io.IOException - - Exception in I/O.

_processWill

void _processWill(int option)
           throws java.io.IOException

Processes a WILL request.

Parameters:

option - - option code to be set.

Throws:

java.io.IOException - - Exception in I/O.

_processWont

void _processWont(int option)
           throws java.io.IOException

Processes a WONT request.

Parameters:

option - - option code to be set.

Throws:

java.io.IOException - - Exception in I/O.

_processSuboption

void _processSuboption(int[] suboption,
                       int suboptionLength)
                throws java.io.IOException

Processes a suboption negotiation.

Parameters:

suboption - - subnegotiation data received

suboptionLength - - length of data received

Throws:

java.io.IOException - - Exception in I/O.

_sendTerminalType

final void _sendTerminalType()
                      throws java.io.IOException

Sends terminal type information.

Throws:

java.io.IOException - - Exception in I/O.

_sendSubnegotiation

final void _sendSubnegotiation(int[] subn)
                        throws java.io.IOException

Manages subnegotiation for Terminal Type.

Parameters:

subn - - subnegotiation data to be sent

Throws:

java.io.IOException - - Exception in I/O.

_sendCommand

final void _sendCommand(byte cmd)
                 throws java.io.IOException

Sends a command, automatically adds IAC prefix and flushes the output.

Parameters:

cmd - - command data to be sent

Throws:

java.io.IOException - - Exception in I/O.

Since:

3.0

_processAYTResponse

final void _processAYTResponse()

Processes the response of an AYT

_connectAction_

protected void _connectAction_()
                        throws java.io.IOException

Called upon connection.

Overrides:

_connectAction_ in class SocketClient

Throws:

java.io.IOException - - Exception in I/O.

_sendDo

final void _sendDo(int option)
            throws java.io.IOException

Sends a DO.

Parameters:

option - - Option code.

Throws:

java.io.IOException - - Exception in I/O.

_requestDo

final void _requestDo(int option)
               throws java.io.IOException

Requests a DO.

Parameters:

option - - Option code.

Throws:

java.io.IOException - - Exception in I/O.

_sendDont

final void _sendDont(int option)
              throws java.io.IOException

Sends a DONT.

Parameters:

option - - Option code.

Throws:

java.io.IOException - - Exception in I/O.

_requestDont

final void _requestDont(int option)
                 throws java.io.IOException

Requests a DONT.

Parameters:

option - - Option code.

Throws:

java.io.IOException - - Exception in I/O.

_sendWill

final void _sendWill(int option)
              throws java.io.IOException

Sends a WILL.

Parameters:

option - - Option code.

Throws:

java.io.IOException - - Exception in I/O.

_requestWill

final void _requestWill(int option)
                 throws java.io.IOException

Requests a WILL.

Parameters:

option - - Option code.

Throws:

java.io.IOException - - Exception in I/O.

_sendWont

final void _sendWont(int option)
              throws java.io.IOException

Sends a WONT.

Parameters:

option - - Option code.

Throws:

java.io.IOException - - Exception in I/O.

_requestWont

final void _requestWont(int option)
                 throws java.io.IOException

Requests a WONT.

Parameters:

option - - Option code.

Throws:

java.io.IOException - - Exception in I/O.

_sendByte

final void _sendByte(int b)
              throws java.io.IOException

Sends a byte.

Parameters:

b - - byte to send

Throws:

java.io.IOException - - Exception in I/O.

_sendAYT

final boolean _sendAYT(long timeout)
                throws java.io.IOException,
                       java.lang.IllegalArgumentException,
                       java.lang.InterruptedException

Sends an Are You There sequence and waits for the result.

Parameters:

timeout - - Time to wait for a response (millis.)

Returns:

true if AYT received a response, false otherwise

Throws:

java.io.IOException - - Exception in I/O.

java.lang.IllegalArgumentException - - Illegal argument

java.lang.InterruptedException - - Interrupted during wait.

addOptionHandler

void addOptionHandler(TelnetOptionHandler opthand)
               throws InvalidTelnetOptionException,
                      java.io.IOException

Registers a new TelnetOptionHandler for this telnet to use.

Parameters:

opthand - - option handler to be registered.

Throws:

InvalidTelnetOptionException - - The option code is invalid.

java.io.IOException - on error

deleteOptionHandler

void deleteOptionHandler(int optcode)
                  throws InvalidTelnetOptionException,
                         java.io.IOException

Unregisters a TelnetOptionHandler.

Parameters:

optcode - - Code of the option to be unregistered.

Throws:

InvalidTelnetOptionException - - The option code is invalid.

java.io.IOException - on error

_registerSpyStream

void _registerSpyStream(java.io.OutputStream spystream)

Registers an OutputStream for spying what's going on in the Telnet session.

Parameters:

spystream - - OutputStream on which session activity will be echoed.

_stopSpyStream

void _stopSpyStream()

Stops spying this Telnet.

_spyRead

void _spyRead(int ch)

Sends a read char on the spy stream.

Parameters:

ch - - character read from the session

_spyWrite

void _spyWrite(int ch)

Sends a written char on the spy stream.

Parameters:

ch - - character written to the session

registerNotifHandler

public void registerNotifHandler(TelnetNotificationHandler notifhand)

Registers a notification handler to which will be sent notifications of received telnet option negotiation commands.

Parameters:

notifhand - - TelnetNotificationHandler to be registered

unregisterNotifHandler

public void unregisterNotifHandler()

Unregisters the current notification handler.