com.dalsemi.shell.server.telnet
Class TelnetSession
java.lang.Object
|
+--java.lang.Thread
|
+--com.dalsemi.shell.server.Session
|
+--com.dalsemi.shell.server.telnet.TelnetSession
- public class TelnetSession
- extends Session
This class encapsulates all functionality for a Telnet session.
The Telnet server listens to port 23 for connection requests.
When someone attempts to start a Telnet session, they contact
port 23. The server spins off a session (an instance of this
class) to handle that session. The session allows you to log
into the system, then handles the communication between that
remote computer and the TINI system. The Telnet server and
sessions are designed to be multi-threaded, allowing multiple
simultaneous Telnet connections.
Fields inherited from class com.dalsemi.shell.server.Session |
commandHistory,
CURRENT_COMMAND,
CURRENT_DIRECTORY,
currentCommand,
environment,
err,
in,
inCommand,
lastCommand,
loginStack,
myThreadID,
out,
paramsArray,
paramsVector,
password,
prompt,
PROMPT,
retArray,
server,
shutdown,
userName,
welcomeMessage |
Methods inherited from class com.dalsemi.shell.server.Session |
addToHistory,
broadcast,
endSession,
execute,
forceEndSession,
getEnvironment,
getErrStream,
getFromEnvironment,
getHistoryNumber,
getNextCommand,
getOutputStream,
getParams,
getUserName,
inCommand,
parseLogin,
printHistory,
run,
stepDownHistory,
stepUpHistory,
su |
Methods inherited from class java.lang.Thread |
activeCount,
checkAccess,
countStackFrames,
currentThread,
destroy,
dumpStack,
enumerate,
getName,
getPriority,
getThreadGroup,
interrupt,
interrupted,
isAlive,
isDaemon,
isInterrupted,
join,
join,
join,
resume,
setDaemon,
setName,
setPriority,
sleep,
sleep,
start,
stop,
stop,
suspend,
toString,
yield |
login
public void login()
throws IOException
- Logs the user into the system. This function will prompt the user
for username and password.
- Overrides:
- login in class Session
sessionEnding
protected void sessionEnding()
- Called to clean up when the session is ending. (i.e. the
user typed "exit", or something bad happened that causes
the session to terminate.) Closes all sockets opened by
this session.
- Overrides:
- sessionEnding in class Session
currentCommandFinished
protected void currentCommandFinished()
- Called after each command is completed. For example, the user
types "ls". The command is received and parsed, then the appropriate
command is called in the shell. Finally, we need to again display the
system prompt.
- Overrides:
- currentCommandFinished in class Session
updatePrompt
public void updatePrompt(String withThis)
- This method was added to speed up prompt printing. It is called when
the prompt needs to change because the user changed directory.
- Overrides:
- updatePrompt in class Session
- Parameters:
withThis
- the current directory
exceptionThrown
protected void exceptionThrown(Exception ex)
- Called when an exception is thrown in a command. This function will
attempt to notify the user. Any exceptions raised specifically by
shell commands should try to give as descriptive a message to the
exception as possible.
- Overrides:
- exceptionThrown in class Session
- Parameters:
ex
- the exception thrown