#!/bin/sh

# Description: Starts and stops the Nagios monitor
#              used to provide network services status.
#
  
status_nagios ()
{

	if test ! -f $NagiosLockFile; then
		echo "No lock file found in $NagiosLockDir"
		return 1
	fi

	#NagiosPID=`head -n 1 $NagiosRunFile`
	if test -x $NagiosCGI/daemonchk.cgi; then
		if $NagiosCGI/daemonchk.cgi -l $NagiosRunFile; then
		        return 0
		else
			return 1
		fi
	else
		if ps -p $NagiosPID; then
		        return 0
		else
			return 1
		fi
	fi

	return 1
}


killproc_nagios ()
{

	if test ! -f $NagiosRunFile; then
		echo "No lock file found in $NagiosRunFile"
		return 1
	fi

	#NagiosPID=`head -n 1 $NagiosRunFile`
	kill $2 $NagiosPID
}


# Source function library
# Solaris doesn't have an rc.d directory, so do a test first
if [ -f /etc/rc.d/init.d/functions ]; then
	. /etc/rc.d/init.d/functions
elif [ -f /etc/init.d/functions ]; then
	. /etc/init.d/functions
fi

prefix=/usr/local/nagios
exec_prefix=${prefix}
NagiosBin=${exec_prefix}/bin/nagios
NagiosCfgFile=/etc/nagios/nagios.cfg
NagiosStatusFile=${prefix}/var/status.dat
NagiosTempFile=${prefix}/var/nagios.tmp
NagiosRetentionFile=${prefix}/var/retention.dat
NagiosCommandFile=${prefix}/var/rw/nagios.cmd
NagiosVarDir=${prefix}/var
NagiosRunFile=${prefix}/var/nagios.lock
NagiosLockDir=/usr/local/nagios/var/lock/
NagiosLockFile=${NagiosLockDir}/nagios.lock
NagiosCGIDir=${exec_prefix}/sbin
NagiosUser=nagios
NagiosGroup=nagios
NagiosPID=`grep pid /var/nagios/nagios.status | sed s/nagios_pid=// | sed 's/^[ \t]*//'`
#echo $NagiosPID;

# Check that nagios exists.
if [ ! -f $NagiosBin ]; then
    echo "Executable file $NagiosBin not found.  Exiting."
    exit 1
fi

# Check that nagios.cfg exists.
if [ ! -f $NagiosCfgFile ]; then
    echo "Configuration file $NagiosCfgFile not found.  Exiting."
    exit 1
fi
          
# See how we were called.
case "$1" in

	start)
		echo "Starting network monitor: nagios"
		$NagiosBin -v $NagiosCfgFile > /dev/null 2>&1;
		if [ $? -eq 0 ]; then
			su - $NagiosUser -c "touch $NagiosVarDir/nagios.log $NagiosRetentionFile"
			rm -f $NagiosCommandFile
			touch $NagiosRunFile
			chown $NagiosUser:$NagiosGroup $NagiosRunFile
			$NagiosBin -d $NagiosCfgFile
			if [ -d $NagiosLockDir ]; then touch $NagiosLockFile; fi
			#sleep 1
			#status_nagios nagios
			exit 0
		else
			echo "CONFIG ERROR!  Start aborted.  Check your Nagios configuration."
			exit 1
		fi
		;;

	stop)
		echo "Stopping network monitor: nagios"
		killproc_nagios nagios
		#rm -f $NagiosStatusFile $NagiosTempFile $NagiosRunFile $NagiosLockDir/$NagiosLockFile $NagiosCommandFile
		;;

	status)
		status_nagios nagios
		;;

	restart)
		printf "Running configuration check..."
		$NagiosBin -v $NagiosCfgFile > /dev/null 2>&1;
		if [ $? -eq 0 ]; then
			echo "done"
			$0 stop
			$0 start
		else
			#$NagiosBin -v $NagiosCfgFile
			echo " FAILED!  Restart aborted.  Check your Nagios configuration."
			exit 1
		fi
		;;

	reload|force-reload)
		printf "Running configuration check..."
		$NagiosBin -v $NagiosCfgFile > /dev/null 2>&1;
		if [ $? -eq 0 ]; then
			echo "done"
			if test ! -f $NagiosRunFile; then
				$0 start
			else
				#NagiosPID=`head -n 1 $NagiosRunFile`
				if status_nagios > /dev/null; then
					printf "Reloading nagios configuration..."
					killproc_nagios nagios -HUP
					echo "done"
				else
					$0 stop
					$0 start
				fi
			fi
		else
			#$NagiosBin -v $NagiosCfgFile
			echo " FAILED!  Reload aborted.  Check your Nagios configuration."
			exit 1
		fi
		;;

	*)
		echo "Usage: nagios {start|stop|restart|reload|force-reload|status}"
		exit 1
		;;

esac
  
# End of this script