TelnetD at SF

net.wimpi.telnetd.net
Class ConnectionData

java.lang.Object
  extended bynet.wimpi.telnetd.net.ConnectionData

public class ConnectionData
extends java.lang.Object

An utility class that is used to store and allow retrieval of all data associated with a connection.

Version:
2.0 (13/03/2005)
Author:
Dieter Wimberger
See Also:
Connection

Constructor Summary
ConnectionData(java.net.Socket sock, ConnectionManager cm)
          Constructs a ConnectionData instance storing vital information about a connection.
 
Method Summary
 void activity()
          Sets a new timestamp to the actual time in millis retrieved from the System.
 java.util.HashMap getEnvironment()
          Returns the hashmap for storing and retrieving environment variables to be passed between shells.
 java.lang.String getHostAddress()
          Returns the IP address of the connection.
 java.lang.String getHostName()
          Returns the fully qualified host name for the connection's IP address.
 java.net.InetAddress getInetAddress()
          Returns the InetAddress object associated with the connection.
 long getLastActivity()
          Returns a timestamp of the last activity that happened on the associated connection.
 java.util.Locale getLocale()
          Returns the Locale object associated with the connection by carrying out a simple domain match.
 java.lang.String getLoginShell()
          Returns the login shell name.
 ConnectionManager getManager()
          Returns a reference to the ConnectionManager the connection is associated with.
 java.lang.String getNegotiatedTerminalType()
          Returns the terminal type that has been negotiated between the telnet client and the telnet server, in of a String.
 int getPort()
          Returns the remote port to which the socket is connected.
 java.net.Socket getSocket()
          Returns a reference to the socket the Connection is associated with.
 int getTerminalColumns()
          Returns the width of the terminal in columns for convenience.
 int[] getTerminalGeometry()
          Returns the terminal geometry in an array of two integers.
 int getTerminalRows()
          Returns the height of the terminal in rows for convenience.
 boolean isLineMode()
          Tests if in line mode.
 boolean isTerminalGeometryChanged()
          Returns the state of the terminal geometry changed flag, which will be true if it has been set, and false if not.
 boolean isWarned()
          Returns the state of the idle warning flag, which will be true if a warning has been issued, and false if not.
 void setLineMode(boolean b)
          Sets the line mode flag for the connection.
 void setLoginShell(java.lang.String s)
          Sets the login shell name.
 void setNegotiatedTerminalType(java.lang.String termtype)
          Sets the terminal type that has been negotiated between telnet client and telnet server, in form of a String.
 void setTerminalGeometry(int width, int height)
          Sets the terminal geometry data.
 void setWarned(boolean bool)
          Sets the state of the idle warning flag.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ConnectionData

public ConnectionData(java.net.Socket sock,
                      ConnectionManager cm)
Constructs a ConnectionData instance storing vital information about a connection.

Parameters:
sock - Socket of the inbound connection.
Method Detail

getManager

public ConnectionManager getManager()
Returns a reference to the ConnectionManager the connection is associated with.

Returns:
Reference to the associated ConnectionManager.
See Also:
ConnectionManager

getSocket

public java.net.Socket getSocket()
Returns a reference to the socket the Connection is associated with.

Returns:
Reference to the associated Socket.
See Also:
Socket

getPort

public int getPort()
Returns the remote port to which the socket is connected.

Returns:
String that contains the remote port number to which the socket is connected.

getHostName

public java.lang.String getHostName()
Returns the fully qualified host name for the connection's IP address.
The name is cached on creation for performance reasons. Subsequent calls will not result in resolve queries.

Returns:
String that contains the fully qualified host name for this address.

getHostAddress

public java.lang.String getHostAddress()
Returns the IP address of the connection.

Returns:
String that contains the connection's IP address.
The format "%d.%d.%d.%d" is well known, where %d goes from zero to 255.

getInetAddress

public java.net.InetAddress getInetAddress()
Returns the InetAddress object associated with the connection.

Returns:
InetAddress associated with the connection.

getLocale

public java.util.Locale getLocale()
Returns the Locale object associated with the connection by carrying out a simple domain match.
This can either be effective, if your users are really home in the country they are connecting from, or ineffective if they are on the move getting connected from anywhere in the world.

Yet this gives the chance of capturing a default locale and starting from some point. On application context this can be by far better handled, so be aware that it makes sense to spend some thoughts on that thing when you build your application.

Returns:
the Locale object "guessed" for the connection based on its host name.

getLastActivity

public long getLastActivity()
Returns a timestamp of the last activity that happened on the associated connection.

Returns:
the timestamp as a long representing the difference, measured in milliseconds, between the current time and midnight, January 1, 1970 UTC.

activity

public void activity()
Sets a new timestamp to the actual time in millis retrieved from the System. This will remove an idle warning flag if it has been set. Note that you can use this behaviour to implement your own complex idle timespan policies within the context of your application.
The check frequency of the ConnectionManager should just be set according to the lowest time to warning and time to disconnect requirements.


setWarned

public void setWarned(boolean bool)
Sets the state of the idle warning flag.
Note that this method will also update the the timestamp if the idle warning flag is removed, which means its kind of a second way to achieve the same thing as with the activity method.

Parameters:
bool - true if a warning is to be issued, false if to be removed.
See Also:
activity()

isWarned

public boolean isWarned()
Returns the state of the idle warning flag, which will be true if a warning has been issued, and false if not.

Returns:
the state of the idle warning flag.

setTerminalGeometry

public void setTerminalGeometry(int width,
                                int height)
Sets the terminal geometry data.
This method should not be called explicitly by the application (i.e. the its here for the io subsystem).
A call will set the terminal geometry changed flag.

Parameters:
width - of the terminal in columns.
height - of the terminal in rows.

getTerminalGeometry

public int[] getTerminalGeometry()
Returns the terminal geometry in an array of two integers. A call will reset the terminal geometry changed flag.

Returns:
integer array containing width and height.

getTerminalColumns

public int getTerminalColumns()
Returns the width of the terminal in columns for convenience.

Returns:
the number of columns.

getTerminalRows

public int getTerminalRows()
Returns the height of the terminal in rows for convenience.

Returns:
the number of rows.

isTerminalGeometryChanged

public boolean isTerminalGeometryChanged()
Returns the state of the terminal geometry changed flag, which will be true if it has been set, and false if not.

Returns:
the state of the terminal geometry changed flag.

setNegotiatedTerminalType

public void setNegotiatedTerminalType(java.lang.String termtype)
Sets the terminal type that has been negotiated between telnet client and telnet server, in form of a String.

This method should not be called explicitly by the application (i.e. the its here for the io subsystem).

Parameters:
termtype - the negotiated terminal type as String.

getNegotiatedTerminalType

public java.lang.String getNegotiatedTerminalType()
Returns the terminal type that has been negotiated between the telnet client and the telnet server, in of a String.

Returns:
the negotiated terminal type as String.

getEnvironment

public java.util.HashMap getEnvironment()
Returns the hashmap for storing and retrieving environment variables to be passed between shells.

Returns:
a HashMap instance.

setLoginShell

public void setLoginShell(java.lang.String s)
Sets the login shell name.

Parameters:
s - the shell name as string.

getLoginShell

public java.lang.String getLoginShell()
Returns the login shell name.

Returns:
the shell name as string.

isLineMode

public boolean isLineMode()
Tests if in line mode.

Returns:
true if in line mode, false otherwise

setLineMode

public void setLineMode(boolean b)
Sets the line mode flag for the connection. Note that the setting will only be used at startup at the moment.

Parameters:
b - true if to be initialized in linemode, false otherwise.

TelnetD at SF

Copyright 2000-2005 Dieter Wimberger.