#!/bin/sh
#
# Event handler script for calling a NRPE handler which executes a command indicated within parameters
#
# Note: This script will only restart the service if the service is in state
#       CRITICAL and falls into a "hard" error state.
#
#There are 4 required arguents to be passed:
#	$1	Hostname/Host IP
#	$2	Status of severity of Nagios service/host check value: CRITICAL/WARNING 
#		Command: $SERVICESTATE$
#	$3	Type of service/host non-ok: HARD/SOFT
#		Command: $SERVICESTATETYPE$
# $4  NRPE command to call on HOST
#	$n > 4	Parameters to give the NRPE handler as $ARG1$

if [ $# -lt 4 ]
then
	echo " "
	echo "Plese call the script with the required arguments"
	echo " "
	echo "Usage:"
	echo "eventhandler-nrpe <hostname> <Nagios_Severity> <HARD|SOFT> [<nrpe-arguments>]"
	echo " "
	exit 3
fi

ALLARGS="$*"
HOST=$1
shift
STATE=$1
shift
TYPE=$1
shift
NRPECMD=$1
shift

logfile=/dev/null
if [ "$1" = "-v" ]
then
  shift
  logfile="/var/log/nagios/eventhandler-nrpe.log"
  touch $logfile 2>/dev/null
  if [ ! -w "$logfile" ]
  then
    logfile=/var/tmp/eventhandler-nrpe.log
    touch $logfile 2>/dev/null
    if [ ! -w "$logfile" ]
    then
      logfile=/dev/null
    fi
  fi

fi

ARGS="$*"

echo "`date +"%Y/%m/%d %H:%M:%S"`: This is the call of event handler: $ALLARGS" >>$logfile

# What state is the service in?
case "$STATE" in
#OK)
#	# The service just came back up, so don't do anything...
#	;;
#WARNING)
#	# We don't really care about warning states, since the service is probably still running...
#	;;
#UNKNOWN)
#	# We don't know what might be causing an unknown error, so don't do anything...
#	;;
CRITICAL)
	# Is this a "soft" or a "hard" state?
	case "$TYPE" in
		
	#SOFT)
	#;;
			
	HARD)
	  # Call the the NRPE command with argumets
	  echo "Calling NRPE command ($NRPECMD) with arguments ($ARGS)" >>$logfile
	  /usr/lib/nagios/plugins/check_nrpe -H $HOST -c $NRPECMD -a " $ARGS" >>$logfile
	  exit $?
	  ;;
	esac
	;;
esac
exit 0