contiki/tools/wpcapslip/Connect.java

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/*
* Copyright (c) 2012, Thingsquare, http://www.thingsquare.com/.
* 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 copyright holder 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 COPYRIGHT HOLDERS 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
* COPYRIGHT HOLDER 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.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
public class Connect {
private static Process cmd1Process;
private static Process cmd2Process;
private static BufferedOutputStream cmd1Out = null;
private static BufferedOutputStream cmd2Out = null;
private static final int BUFSIZE = 512;
public static void main(String[] args) throws Exception {
if (args.length != 2) {
System.err.println("Usage: " + Connect.class.getName() + " [cmd1] [cmd2]");
System.exit(1);
}
/* Command 1 */
String cmd1 = args[0];
System.out.println("> " + cmd1);
cmd1Process = Runtime.getRuntime().exec(cmd1, null, new File("."));
final DataInputStream cmd1Input = new DataInputStream(
cmd1Process.getInputStream());
final BufferedReader cmd1Err = new BufferedReader(
new InputStreamReader(cmd1Process.getErrorStream()));
cmd1Out = new BufferedOutputStream(cmd1Process.getOutputStream());
Thread readInput = new Thread(new Runnable() {
public void run() {
int numRead = 0;
byte[] buf = new byte[BUFSIZE];
try {
while (true) {
numRead = cmd1Input.read(buf, 0, BUFSIZE);
if (numRead > 0 && cmd2Out != null) {
/* System.err.println("1>2 " + numRead); */
cmd2Out.write(buf, 0, numRead);
cmd2Out.flush();
}
Thread.sleep(1);
}
} catch (Exception e) {
e.printStackTrace();
}
String exitVal = "?";
try {
if (cmd1Process != null) {
exitVal = "" + cmd1Process.exitValue();
}
} catch (IllegalStateException e) {
e.printStackTrace();
exitVal = "!";
}
System.out.println("cmd1 terminated: " + exitVal);
exit();
}
}, "read stdout cmd1");
Thread readError = new Thread(new Runnable() {
public void run() {
String line;
try {
while ((line = cmd1Err.readLine()) != null) {
System.err.println("cmd1 err: " + line);
}
cmd1Err.close();
} catch (IOException e) {
}
System.err.println("cmd1 terminated.");
exit();
}
}, "read error cmd1");
readInput.start();
readError.start();
/* Command 2 */
String cmd2 = args[1];
System.err.println("> " + cmd2);
cmd2Process = Runtime.getRuntime().exec(cmd2, null, new File("."));
final DataInputStream cmd2Input = new DataInputStream(
cmd2Process.getInputStream());
final BufferedReader cmd2Err = new BufferedReader(
new InputStreamReader(cmd2Process.getErrorStream()));
cmd2Out = new BufferedOutputStream(cmd2Process.getOutputStream());
readInput = new Thread(new Runnable() {
public void run() {
int numRead = 0;
byte[] buf = new byte[BUFSIZE];
try {
while (true) {
numRead = cmd2Input.read(buf, 0, BUFSIZE);
if (numRead > 0 && cmd1Out != null) {
/* System.err.println("2>1 " + numRead); */
cmd1Out.write(buf, 0, numRead);
cmd1Out.flush();
}
Thread.sleep(1);
}
} catch (Exception e) {
e.printStackTrace();
}
String exitVal = "?";
try {
if (cmd2Process != null) {
exitVal = "" + cmd2Process.exitValue();
}
} catch (IllegalStateException e) {
e.printStackTrace();
exitVal = "!";
}
System.out.println("cmd2 terminated: " + exitVal);
exit();
}
}, "read stdout cmd2");
readError = new Thread(new Runnable() {
public void run() {
String line;
try {
while ((line = cmd2Err.readLine()) != null) {
System.err.println("cmd2 err: " + line);
}
cmd2Err.close();
} catch (IOException e) {
}
System.err.println("cmd2 terminated.");
exit();
}
}, "read error cmd2");
readInput.start();
readError.start();
while (true) {
Thread.sleep(100);
}
}
private static void exit() {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
}
try {
if (cmd1Process != null) {
cmd1Process.destroy();
}
} catch (Exception e) {
}
try {
if (cmd2Process != null) {
cmd2Process.destroy();
}
} catch (Exception e) {
}
System.err.flush();
System.exit(1);
}
}