#!/usr/bin/env node

//a program to run remote command in *nix
//you can telnet to 8124 port to excute any command
//phil songbohr[@163](/user/163).com, [@http](/user/http)://weibo.com/bocaicfa
//2012.4.13

var net = require('net'),
	util  = require('util'),
    exec = require('child_process').exec

var server = net.createServer(function(c){
	console.log('server connected');
	c.on('end', function() {
		console.log('server disconnected');
	});
	c.write('hello\r\n');
  
	function excutecmd(data){
		var start = +new Date();
		
		var cmdline = data.toString('ascii');

		cmdline=cmdline.replace(/\r\n/g, "");
		
		console.log(cmdline + '|' + cmdline.length + '|' + cmdline.indexOf('\n'));
		cmd = exec(cmdline);

		cmd.stdout.on('data', function (data) {
			console.log('stdout: ' + data);
			c.write(data);
		});

		cmd.stderr.on('data', function (data) {
			if (/^execvp\(\)/.test(data)) {
				console.log('Failed to start child process.');
			}
			console.log('stderr: ' + data);
			c.write(data);
		});

		cmd.on('exit', function (code) {
			var end = + new Date();
			var result = 'end: ' + code + ' escape: ' + (end-start) + 'ms\r\n';
			console.log(result);
			c.write(result);
		});
	}
	
	c.on('data', function(data){
		console.log('recv: ' + data);
		
		excutecmd(data);
	});
});
server.listen(8124);