/*
* Copyright (c) 2010, Swedish Institute of Computer Science.
* 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. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS 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 THE INSTITUTE OR 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.
*
*/
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Collection;
import java.util.Observable;
import java.util.Observer;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
import org.apache.log4j.Logger;
import org.jdom.Element;
import org.contikios.cooja.ClassDescription;
import org.contikios.cooja.Cooja;
import org.contikios.cooja.Mote;
import org.contikios.cooja.MotePlugin;
import org.contikios.cooja.PluginType;
import org.contikios.cooja.Simulation;
import org.contikios.cooja.VisPlugin;
import org.contikios.cooja.interfaces.SerialPort;
/**
* Socket to simulated serial port forwarder. Server version.
*
* @author Fredrik Osterlind
*/
@ClassDescription("Serial Socket (SERVER)")
@PluginType(PluginType.MOTE_PLUGIN)
public class SerialSocketServer extends VisPlugin implements MotePlugin {
private static final long serialVersionUID = 1L;
private static Logger logger = Logger.getLogger(SerialSocketServer.class);
private final static int LABEL_WIDTH = 100;
private final static int LABEL_HEIGHT = 15;
public final int LISTEN_PORT;
private SerialPort serialPort;
private Observer serialDataObserver;
private JLabel statusLabel, inLabel, outLabel;
private int inBytes = 0, outBytes = 0;
private ServerSocket server;
private Socket client;
private DataInputStream in;
private DataOutputStream out;
private Mote mote;
public SerialSocketServer(Mote mote, Simulation simulation, final Cooja gui) {
super("Serial Socket (SERVER) (" + mote + ")", gui, false);
this.mote = mote;
updateTimer.start();
LISTEN_PORT = 60000 + mote.getID();
/* GUI components */
if (Cooja.isVisualized()) {
Box northBox = Box.createHorizontalBox();
northBox.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
statusLabel = configureLabel(northBox, "", "");
Box mainBox = Box.createHorizontalBox();
mainBox.setBorder(BorderFactory.createEmptyBorder(0, 5, 5, 5));
inLabel = configureLabel(mainBox, "socket -> mote:", "0 bytes");
outLabel = configureLabel(mainBox, "mote -> socket", "0 bytes");
getContentPane().add(BorderLayout.NORTH, northBox);
getContentPane().add(BorderLayout.CENTER, mainBox);
pack();
}
/* Mote serial port */
serialPort = (SerialPort) mote.getInterfaces().getLog();
if (serialPort == null) {
throw new RuntimeException("No mote serial port");
}
try {
logger.info("Listening on port: " + LISTEN_PORT);
if (Cooja.isVisualized()) {
statusLabel.setText("Listening on port: " + LISTEN_PORT);
}
server = new ServerSocket(LISTEN_PORT);
new Thread() {
public void run() {
while (server != null) {
try {
client = server.accept();
in = new DataInputStream(client.getInputStream());
out = new DataOutputStream(client.getOutputStream());
out.flush();
startSocketReadThread(in);
if (Cooja.isVisualized()) {
statusLabel.setText("Client connected: " + client.getInetAddress());
}
} catch (IOException e) {
logger.fatal("Listening thread shut down: " + e.getMessage());
server = null;
cleanupClient();
break;
}
}
}
}.start();
} catch (Exception e) {
throw (RuntimeException) new RuntimeException(
"Connection error: " + e.getMessage()).initCause(e);
}
/* Observe serial port for outgoing data */
serialPort.addSerialDataObserver(serialDataObserver = new Observer() {
public void update(Observable obs, Object obj) {
try {
if (out == null) {
/*logger.debug("out is null");*/
return;
}
out.write(serialPort.getLastSerialData());
out.flush();
outBytes++;
} catch (IOException e) {
cleanupClient();
}
}
});
}
private void startSocketReadThread(final DataInputStream in) {
/* Forward data: virtual port -> mote */
Thread incomingDataThread = new Thread(new Runnable() {
public void run() {
int numRead = 0;
byte[] data = new byte[1024];
logger.info("Forwarder: socket -> serial port");
while (true) {
numRead = -1;
try {
numRead = in.read(data);
} catch (IOException e) {
numRead = -1;
}
if (numRead >= 0) {
for (int i=0; i < numRead; i++) {
serialPort.writeByte(data[i]);
}
inBytes += numRead;
} else {
cleanupClient();
break;
}
}
}
});
incomingDataThread.start();
}
private JLabel configureLabel(JComponent pane, String desc, String value) {
JPanel smallPane = new JPanel(new BorderLayout());
JLabel label = new JLabel(desc);
label.setPreferredSize(new Dimension(LABEL_WIDTH,LABEL_HEIGHT));
smallPane.add(BorderLayout.WEST, label);
label = new JLabel(value);
label.setPreferredSize(new Dimension(LABEL_WIDTH,LABEL_HEIGHT));
smallPane.add(BorderLayout.CENTER, label);
pane.add(smallPane);
return label;
}
public boolean setConfigXML(Collection<Element> configXML, boolean visAvailable) {
return true;
}
public Collection<Element> getConfigXML() {
return null;
}
private void cleanupClient() {
try {
if (client != null) {
client.close();
client = null;
}
} catch (IOException e1) {
}
try {
if (in != null) {
in.close();
in = null;
}
} catch (IOException e) {
}
try {
if (out != null) {
out.close();
out = null;
}
} catch (IOException e) {
}
if (Cooja.isVisualized()) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
statusLabel.setText("Listening on port: " + LISTEN_PORT);
}
});
}
}
private boolean closed = false;
public void closePlugin() {
closed = true;
cleanupClient();
serialPort.deleteSerialDataObserver(serialDataObserver);
try {
server.close();
} catch (IOException e) {
}
}
public Mote getMote() {
return mote;
}
private static final int UPDATE_INTERVAL = 150;
private Timer updateTimer = new Timer(UPDATE_INTERVAL, new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (closed) {
updateTimer.stop();
return;
}
inLabel.setText(inBytes + " bytes");
outLabel.setText(outBytes + " bytes");
}
});
}