pfSense

#!/bin/sh

# pfSense ping helper

# written by Scott Ullrich

# (C)2006 Scott Ullrich

# All rights reserved.

# Format of file should be deliminted by |

#  Field 1:  Source ip

#  Field 2:  Destination ip

#  Field 3:  Ping count

#  Field 4:  Script to run when service is down

#  Field 5:  Script to run once service is restored

#  Field 6:  Ping time threshold

#  Field 7:  Wan ping time threshold

# Read in ipsec ping hosts and check the CARP status

if [ -f /var/db/ipsecpinghosts ]; then

	IPSECHOSTS="/var/db/ipsecpinghosts"

	CURRENTIPSECHOSTS="/var/db/currentipsecpinghosts"

	IFVPNSTATE=`ifconfig $IFVPN | grep "carp: BACKUP vhid" | wc -l`

	if [ $IFVPNSTATE -gt 1 ]; then

		echo -e "CARP interface in BACKUP (not pinging ipsec hosts)"

		rm -f $CURRENTIPSECHOSTS

		touch $CURRENTIPSECHOSTS

	else

		echo -e "CARP interface is MASTER or non CARP (pinging ipsec hosts)"

		cat < $IPSECHOSTS > $CURRENTIPSECHOSTS

	fi

fi

# General file meant for user consumption

if [ -f /var/db/hosts ]; then

	HOSTS="/var/db/hosts"

fi

# Package specific ping requests

if [ -f /var/db/pkgpinghosts ]; then

	PKGHOSTS="/var/db/pkgpinghosts"

fi

cat $PKGHOSTS $HOSTS $IPSECHOSTS >/tmp/tmpHOSTS

if [ ! -d /var/db/pingstatus ]; then

	/bin/mkdir -p /var/db/pingstatus

fi

if [ ! -d /var/db/pingmsstatus ]; then

	/bin/mkdir -p /var/db/pingmsstatus

fi

PINGHOSTS=`cat /tmp/tmpHOSTS`

PINGHOSTCOUNT=`cat /tmp/tmpHOSTS | wc -l`

if [ "$PINGHOSTCOUNT" -lt "1" ]; then

	exit

fi

for TOPING in $PINGHOSTS ; do

	echo "PROCESSING $TOPING"

	SRCIP=`echo $TOPING | cut -d"|" -f1`

	DSTIP=`echo $TOPING | cut -d"|" -f2`

	COUNT=`echo $TOPING | cut -d"|" -f3`

	FAILURESCRIPT=`echo $TOPING | cut -d"|" -f4`

	SERVICERESTOREDSCRIPT=`echo $TOPING | cut -d"|" -f5`

	THRESHOLD=`echo $TOPING | cut -d"|" -f6`

	WANTHRESHOLD=`echo $TOPING | cut -d"|" -f7`

	echo Processing $DSTIP

	# Look for a service being down

	ping -c $COUNT -S $SRCIP $DSTIP

		# Host is up

		# Read in previous status

		PREVIOUSSTATUS=`cat /var/db/pingstatus/$DSTIP`

		if [ "$PREVIOUSSTATUS" = "DOWN" ]; then

			# Service restored

			if [ "$SERVICERESTOREDSCRIPT" != "" ]; then

				echo "$DSTIP is UP, previous state was DOWN .. Running $SERVICERESTOREDSCRIPT"

				echo "$DSTIP is UP, previous state was DOWN .. Running $SERVICERESTOREDSCRIPT" | logger -p daemon.info -i -t PingMonitor

				sh -c $SERVICERESTOREDSCRIPT

			fi

		fi

		echo "UP" > /var/db/pingstatus/$DSTIP

	else

		# Host is down

		PREVIOUSSTATUS=`cat /var/db/pingstatus/$DSTIP`

		if [ "$PREVIOUSSTATUS" = "UP" ]; then

			# Service is down

			if [ "$FAILURESCRIPT" != "" ]; then

				echo "$DSTIP is DOWN, previous state was UP ..  Running $FAILURESCRIPT"

				echo "$DSTIP is DOWN, previous state was UP ..  Running $FAILURESCRIPT" | logger -p daemon.info -i -t PingMonitor

				sh -c $FAILURESCRIPT

			fi

		fi

		echo "DOWN" > /var/db/pingstatus/$DSTIP

	fi

	echo "Checking ping time $DSTIP"

	# Look at ping values themselves

	PINGTIME=`ping -c 1 -S $SRCIP $DSTIP | awk '{ print $7 }' | grep time | cut -d "=" -f2`

	echo "Ping returned $?"

	echo $PINGTIME > /var/db/pingmsstatus/$DSTIP

	if [ "$THRESHOLD" != "" ]; then

		if [ "$PINGTIME" -gt "$THRESHOLD" ]; then

			echo "$DSTIP has exceeded ping threshold $PINGTIME / $THRESHOLD .. Running $FAILURESCRIPT"

			echo "$DSTIP has exceeded ping threshold $PINGTIME / $THRESHOLD .. Running $FAILURESCRIPT" | logger -p daemon.info -i -t PingMonitor

			sh -c $FAILURESCRIPT

		fi

	fi

	# Wan ping time threshold

	echo $WANTIME > /var/db/wanaverage

	if [ "$WANTHRESHOLD" != "" ]; then

		if [ "$WANTIME" -gt "$WANTHRESHOLD" ]; then

			echo "$DSTIP has exceeded wan ping threshold $WANTIME / $WANTHRESHOLD .. Running $FAILURESCRIPT"

			echo "$DSTIP has exceeded wan ping threshold $WANTIME / $WANTHRESHOLD .. Running $FAILURESCRIPT" | logger -p daemon.info -i -t PingMonitor

			sh -c $FAILURESCRIPT

		fi

	fi

	sleep 1

exit 0