com.maverick.sshd
Class Subsystem

java.lang.Object
  com.maverick.sshd.Subsystem

All Implemented Interfaces:

com.maverick.ssh.components.SshComponent

Direct Known Subclasses:

SftpSubsystem

public abstract class Subsystem
extends Object
implements com.maverick.ssh.components.SshComponent

Defines the abstract attributes of an SSH Subsystem.

Author:

Lee David Painter

Field Summary

protected SshContext	context
protected SessionChannel	session

Constructor Summary

Subsystem(String name)

Method Summary

String	getName()
void	init(SessionChannel session) Initialize the subsystem with the current session and configuration.
protected abstract void	onMessageReceived(byte[] msg) Called when a subsystem message has been extracted from the incoming data stream.
protected abstract void	onSubsystemFree() The subsystem has been closed and all resources should be freed.
protected void	processMessage(byte[] data) Process channel data and transform into a subsystem message when enough data has arrived.
protected void	sendMessage(com.maverick.ssh.common.Packet packet) Send a subsystem message.

Methods inherited from class java.lang.Object

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

Field Detail

session

protected SessionChannel session

context

protected SshContext context

Constructor Detail

Subsystem

public Subsystem(String name)

Method Detail

getName

public String getName()

Specified by:

getName in interface com.maverick.ssh.components.SshComponent

init

public void init(SessionChannel session)
          throws IOException,
                 PermissionDeniedException

Initialize the subsystem with the current session and configuration.

Parameters:

session -

context -

Throws:

IOException

PermissionDeniedException

processMessage

protected void processMessage(byte[] data)
                       throws IOException

Process channel data and transform into a subsystem message when enough data has arrived.

Parameters:

data -

Throws:

IOException

onSubsystemFree

protected abstract void onSubsystemFree()

The subsystem has been closed and all resources should be freed.

onMessageReceived

protected abstract void onMessageReceived(byte[] msg)
                                   throws IOException

Called when a subsystem message has been extracted from the incoming data stream.

Parameters:

msg -

Throws:

IOException

sendMessage

protected void sendMessage(com.maverick.ssh.common.Packet packet)

Send a subsystem message. NOTE: you do not have to prefix the message with its length as this operation is performed inside this method.

Parameters:

msg -