#!/usr/bin/env bash

PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

device=$1
device=${device:="ppp0"}

provider=$2
provider=${provider:="dsl-provider"}

reconnect() {
   ## - shutdown dsl line
   ## -
   ifdown $provider >/dev/null 2> /dev/null
   sleep 2

   ## - If shutdown wasn't successful, kill the concerning pid
   ## -
   PID=`ps ax | grep pppd | grep -v grep | grep $provider | awk '{print$1}'`
   while [ -n "$PID" ]; do
      kill -9 $PID
      sleep 2
      PID=`ps ax | grep pppd | grep -v grep | grep $provider | awk '{print$1}'`
   done

   ## - Bring up dsl line
   ## -
   _date=`date +"%d.%m.%Y %H:%M:%S"`
   ifup $provider >/dev/null 2> /dev/null
   sleep 2


   #echo -n "`hostname --long` reconnected at `date +\"%d.%m.%Y %H:%M:%S\"`"

   declare -i _number=0
   ptp_addr=`ifconfig $device 2>/dev/null | grep -e "P-[tz]-P" | cut -d":" -f3 | cut -d " " -f1`
   while [ -z "$ptp_addr" ]; do
      [[ $_number -eq 90 ]] && break 
      sleep 1
      ptp_addr=`ifconfig $device 2>/dev/null | grep -e "P-[tz]-P" | cut -d":" -f3 | cut -d " " -f1`
      let _number++
   done

   if [ "X$ptp_addr" = "X" ] ; then
      echo ""
      echo "[ ERROR ]: reconnection host `hostname --long` failed at `date +\"%d.%m.%Y %H:%M:%S\"`"
   fi
}

reconnect

exit 0;