/*
* Copyright (c) 2002 Sun Microsystems, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Sun Microsystems, Inc. for Project JXTA."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact Project JXTA at http://www.jxta.org.
*
* 5. Products derived from this software may not be called "JXTA",
* nor may "JXTA" appear in their name, without prior written
* permission of Sun.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL SUN MICROSYSTEMS OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of Project JXTA. For more
* information on Project JXTA, please see
* <http://www.jxta.org/>.
*
* This license is based on the BSD license adopted by the Apache Foundation.
*
* $Id: rshd.java,v 1.16 2007/02/09 23:12:42 hamada Exp $
*/
package net.jxta.impl.shell.bin.rshd;
import net.jxta.endpoint.*;
import net.jxta.impl.shell.ShellApp;
import java.util.*;
/**
* Remote JXTA Shell Deamon
*/
public class rshd extends ShellApp implements EndpointListener {
static public final String ThisShell = "RemoteShellDeamon";
static public final long INACTIVITY_TIMEOUT = 5 * 60 * 1000; // 5 Minutes
static public final String NAME = "JxtaRshd";
static public final String SESSION_REQUEST = "SessionRequest";
static public final String SESSION_CLOSE = "SessionClose";
static public final String SESSION_GRANTED = "SessionGranted";
static public final String SESSION_DENIED = "SessionDenied";
static public final String DATA = "RshdData";
static public final String APP_ARGS = "RshdAppArgs";
EndpointService endpoint = null;
Timer timer = new Timer(true);
/**
* noarg constructor
*/
public rshd() {
timer.schedule(new TimerTask() {
@Override
public void run() {
Thread.currentThread().setName("Shell Session Inactivity Timer");
}
}, 0);
}
/**
* {@inheritDoc}
*/
public int startApp(String[] args) {
endpoint = getGroup().getEndpointService();
String pParam = getGroup().getPeerGroupID().getUniqueValue().toString();
try {
endpoint.addIncomingMessageListener(this, NAME, pParam);
} catch (Exception ez1) {
// Not much we can do here.
printStackTrace("Cannot attach endpoint listener", ez1);
return ShellApp.appMiscError;
}
consoleMessage("daemon started");
return ShellApp.appSpawned;
}
@Override
public void stopApp() {
// Remove itself from the parent ShellEnv (GC)
super.stopApp();
timer.cancel();
}
/**
* {@inheritDoc}
*/
@Override
public String getDescription() {
return "Remote JXTA Shell Deamon";
}
/**
* {@inheritDoc}
*/
@Override
public void help() {
println("NAME");
println(" rshd - " + getDescription());
println(" ");
println("SYNOPSIS");
println(" ");
println(" rshd");
println(" ");
println("DESCRIPTION");
println(" ");
println("Runs the Remote Shell server. rshd runs in background, allowing");
println("incoming connections using the command rsh.");
println("The shell command login is used in order to authentified the user:");
println("the user and password of the peer running rshd will have to be provided");
println("by the user.");
println(" ");
println("SEE ALSO");
println(" login Shell rsh");
}
private String[] processArgs(String str) {
List<String> v = new ArrayList<String>();
StringTokenizer st = new StringTokenizer(str);
while (st.hasMoreTokens()) {
v.add(st.nextToken());
}
return v.toArray(new String[v.size()]);
}
private boolean processConnectRequest(Message msg, EndpointAddress srcAddr) {
String remoteAddr = null;
MessageElement el = msg.getMessageElement(null, SESSION_REQUEST);
if (el != null) {
remoteAddr = el.toString();
}
// Check if there is arguments
String[] appArgs;
el = msg.getMessageElement(null, APP_ARGS);
if (el != null) {
appArgs = processArgs(el.toString());
} else
appArgs = new String[0];
RemoteShellSession app;
try {
app = new RemoteShellSession(this, srcAddr, remoteAddr);
} catch (Exception ez1) {
return false;
}
app.init(getGroup(), null, null);
exec(app, appArgs);
return true;
}
/**
* {@inheritDoc}
*/
public void processIncomingMessage(Message msg, EndpointAddress srcAddr, EndpointAddress dstAddr) {
try {
if (msg.getMessageElement(null, SESSION_REQUEST) != null) {
processConnectRequest(msg, srcAddr);
}
} catch (Exception ez1) {
printStackTrace("Failure in processing connect request", ez1);
}
}
}