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package com.jcraft.util;
import java.io.*;
import java.net.*;
import java.lang.*;
public class JRexec implements Runnable {
private Thread thread=null;
private InputStream data=null;
private InputStream in=null;
private OutputStream out=null;
private boolean devnull=true;
private Socket socket=null;
String user=null;
String host=null;
String passwd=null;
String command=null;
public JRexec(String user, String host, String passwd, String command)
throws JRexecException {
this.user=user;
this.host=host;
this.passwd=passwd;
this.command=command;
try{
socket = new Socket(host, 512);
in = socket.getInputStream();
out = socket.getOutputStream();
}
catch(java.net.UnknownHostException e){
throw new JRexecException(e.toString());
}
catch(java.io.IOException e) {
throw new JRexecException(e.toString());
}
}
public JRexec(String user, String host, String passwd, String command,
InputStream data)
throws JRexecException {
this(user, host, passwd, command);
this.data=data;
}
public JRexec(String user, String host, String passwd, String command,
String data)
throws JRexecException {
this(user, host, passwd, command);
this.data=new ByteArrayInputStream(data.getBytes());
}
public synchronized InputStream getResult(){
if(thread!=null || !devnull) return null;
devnull=false;
return in;
}
public synchronized void doit(){
if(thread==null){
thread=new Thread(this);
thread.start();
}
}
public void run() {
try {
// port
out.write(0);
int chop=8;
if(user.length()<chop) chop=user.length();
out.write(user.getBytes(), 0, chop);
out.write(0);
chop=8;
if(passwd.length()<chop) chop=passwd.length();
out.write(passwd.getBytes(), 0, chop);
out.write(0);
chop=4096;
if(command.length()<chop) chop=command.length();
out.write(command.getBytes(), 0, chop);
out.write(0);
byte[] buf=new byte[1024];
if(data!=null){
while(true){
int len=data.read(buf, 0, buf.length);
if(len==-1) break;
out.write(buf, 0, len);
}
}
if(devnull){
byte[] b=new byte[1];
in.read(b, 0, 1);
if(b[0]==0){ // success
while(true){
int len=in.read(buf, 0, buf.length);
if(len==-1) break;
System.out.print(new String(buf, 0, len));
}
}
else{ // error message
while(true){
int len=in.read(buf, 0, buf.length);
if(len==-1) break;
System.out.print(new String(buf, 0, len));
}
}
}
// stop();
}
catch(IOException e) {
close();
System.out.println("IO Error : " + e );
}
return;
}
private synchronized void stop(){
if(thread!=null){
thread=null;
}
}
public void close(){
try {
in.close();
out.close();
socket.close();
}
catch(Exception e) {
System.out.println(e);
}
}
public static void main(String arg[]){
try {
JRexec jrexec=new JRexec("yamanaka", "localhost", "foo", "du /");
InputStream in=jrexec.getResult();
jrexec.doit();
byte[] b=new byte[1];
in.read(b, 0, 1); // 0
System.out.println("return: "+b[0]);
byte[] buf=new byte[1024];
while(true){
int len=in.read(buf, 0, buf.length);
if(len==-1) break;
System.out.print(new String(buf, 0, len));
}
}
catch(Exception e) {
System.out.println("IO Error : " + e );
}
}
}
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