#!/bin/sh
#
# v1, ADSL connection monitor
#
# 2001, Alex <alex{}purebsd.com>
#

# Edit below values to your own preferences

# IP of remote end of pptp tunnel
REMOTE_IP='195.190.241.152'

# Set the ADSL reconnect monitor log file (tm)
LOGFILE=/var/log/adsl

# Verbosity level, 0 = silent, 1 = noisy
VERBOSE=0

# Do not edit anything below, do not even look.

# Grab them pid's
PPTP_MNG_PID=`ps x|grep 'call manager'|grep -v grep| awk '{print $1}'`
PPTP_GRE_PID=`ps x|grep 'PPP gateway'|grep -v grep| awk '{print $1}'`
PPPD_PID=`ps x|grep 'pppd'|grep -v grep| awk '{print $1}'`

# Ping our remote end of the pptp tunnel
if ping -w 1 -c 1 $REMOTE_IP > /dev/null 2>&1; then
  if [ $VERBOSE = 1 ]; then
    # Print nice message, duh (-:
    echo "ADSL connection is just fine"
  fi

  # Write to log file
  echo -n `date | awk '{print $2,$3,$4}'` >> $LOGFILE
  echo " ADSL connection is just fine" >> $LOGFILE

  # Terminate cleanly
  exit
fi

# We're officially offline now
# Go do something about it

# Finish that call manager
if [ ! -z $PPTP_MNG_PID ]; then
  kill -9 $PPTP_MNG_PID 
fi

# Demolish those GRE-to-PPP gateway troubles
if [ ! -z $PPTP_GRE_PID ]; then
  kill -9 $PPTP_GRE_PID 
fi

# Kill off PPP daemon
if [ ! -z $PPPD_PID ]; then
  kill -9 $PPPD_PID 
fi

# Just make sure there are no files lingering
rm -rf /var/run/pptp.pid > /dev/null 2>&1
rm -rf /var/run/pptp     > /dev/null 2>&1

# Delete them interfaces
ifconfig ppp0 delete > /dev/null 2>&1
ifconfig ppp1 delete > /dev/null 2>&1

# Sleep for safety
sleep 1

# Reconnect to ADSL stuff
pptp 10.0.0.138 > /dev/null 2>&1
wait

# Write to screen
echo "ADSL connection probably up now.."

# Write to log file
echo -n `date | awk '{print $2,$3,$4}'` >> $LOGFILE
echo " ADSL connection probably up now.." >> $LOGFILE