#!/bin/bash

if [ $1 ]; then
  DEVICE=$1
else
  DEVICE=tun0
fi

TUN_IP=`grep ifconfig /etc/sysconfig/net/openvpn/$DEVICE.config | awk '{ print $3; };' `


if [ -f /var/run/tunneltest.pid ]; then
 ps -ef | grep `cat /var/run/tunneltest.pid` || rm /var/run/tunneltest.pid
fi

if [ ! -f /var/run/tunneltest.pid ]; then
  ping  -c 1 -i 1 -w 1 $TUN_IP  >/dev/null 2>/dev/null
  if [ $? != 0 ]; then
    PID=`ps -ef | grep tun1 | grep -v grep | awk '{ print $2; }'`
    if [ $PID ]; then
     kill -1 $PID
    fi
    sleep 5s
    ping  -c 1 -i 1 -w 1 $TUN_IP  >/dev/null 2>/dev/null
    if [ $? != 0 ]; then
      PID=`ps -ef | grep tun1 | grep -v grep | awk '{ print $2; }'`
      if [ $PID ]; then
        kill -9 $PID
      fi
      sleep 5s
      /usr/sbin/openvpn --config /etc/sysconfig/net/openvpn/$DEVICE.config >/dev/null 2>/dev/null &
    fi
  fi
fi