#!/usr/bin/env python
# coding: utf8
 
import time
import subprocess
import codecs
import os
import re
 
# telnet host
def pingComputer(host, statusFile):
	status1 = 'ping success'
	status2 = 'ping faild'
	errorStr = 'Destination'
	for ipAdd in host:
		print ("get: " +ipAdd + " status")
		# get now time
		nowTime = time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time()))
		p = os.popen("ping -q -c 2 -r " + ipAdd)
		line = p.read()
		
		# judge errorstr in line if
		if errorStr in line:
			writeToText(nowTime, ipAdd, status2, statusFile)
		else:
			writeToText(nowTime, ipAdd, status1, statusFile)
 
		
# write status information to txt
def writeToText(nowTime, ipAdd, status, statusFile):
	s_text = 'TIME:' + nowTime + '\t' + 'IP:' + ipAdd + '\t' + 'STATUS:' + status + '\r\n'
	
	if '0' == judgeFile(statusFile):
		with open(statusFile, 'a') as f:
			f.write(s_text)
			f.close()
	if '1' == judgeFile(statusFile):
		with open(statusFile, 'w') as f:
			f.write(s_text)
			f.close()
		
		
			
# Determine whether statusFile exists 
# 0: exists
# 1: no exists
def judgeFile(statusFile):
	if os.path.exists(statusFile):
		return '0'
	else:
		return '1'
			
if __name__ == "__main__":
	IpFirst = '192.168.1.'
	# ip:1~254
	host = []
	for j in range(254):
 		host.append(IpFirst + str(j + 1))
	# write file
	statusFile = '/root/UpStatus.txt'
	pingComputer(host, statusFile)