#!/bin/sh

export PATH=/home/bin:/home/scripts:/opt/bin:/bin:/sbin:/usr/bin:/usr/sbin
#export LD_LIBRARY_PATH=/lib/public:/lib/private:/usr/lib:/lib:/usr/lib/ebtables:/usr/lib/iptables

SUPPORT_LIB64=`ls / | grep lib64`
if [ "$SUPPORT_LIB64" == "lib64" ] ;then
export LD_LIBRARY_PATH=/lib/public:/lib/private:/usr/lib:/lib:/lib64/gpl:/lib64:/usr/lib/ebtables:/usr/lib/iptables
else
export LD_LIBRARY_PATH=/lib/public:/lib/private:/usr/lib:/lib:/usr/lib/ebtables:/usr/lib/iptables
fi

EXEC_NAME=dnsmasq
EXEC_PATH=/usr/sbin
EXEC_CONF=/etc/dnsmasq.conf
USER=root
DNSMASQ_LOG_CONF=/var/dnsmasq/conf.d/logquit.conf
DNSMASQ_LOG_CONF_BACK=/var/dnsmasq/conf.d/logquit.conf_back

logchk()
{
	local re_start=0
	if [ ! -f $DNSMASQ_LOG_CONF ]; then
		echo "quiet-dhcp" > $DNSMASQ_LOG_CONF
		echo "quiet-dhcp6" >> $DNSMASQ_LOG_CONF
		echo "quiet-ra" >> $DNSMASQ_LOG_CONF
		re_start=1
	fi
	
	cp $DNSMASQ_LOG_CONF $DNSMASQ_LOG_CONF_BACK
	local str=""
	for i in $@
	do
		if [ -z ${i##*dhcp-log*} ]; then
			str='quiet-dhcp'
		elif [ -z ${i##*dhcp6-log*} ]; then
			str='quiet-dhcp6'
		elif [ -z ${i##*ra-log*} ]; then
			str='quiet-ra'
		else
			str=''
		fi
	
		if [ ! -z $str ]; then
			local replace=$str
			if [ -z ${i##enable*} ]; then
				replace='#'$replace
			fi
			local chk=`cat $DNSMASQ_LOG_CONF | grep "^#*\s*$str\s*$"`
			if [ ! -z $chk ]; then
				sed -i "s/^#*[ tab]*$str[ tab]*$/$replace/g" $DNSMASQ_LOG_CONF
			else
				echo "$replace" >> $DNSMASQ_LOG_CONF
			fi
		fi
	done
	
	local orig_size=`ls -al $DNSMASQ_LOG_CONF_BACK | awk '{print $5}'`
	local res_size=`ls -al $DNSMASQ_LOG_CONF | awk '{print $5}'`
	
	if [ $orig_size -ne $res_size ]; then
		re_start=1
	fi
	rm $DNSMASQ_LOG_CONF_BACK
	
	echo $re_start
}

reload()
{
	PID=$(pgrep dnsmasq)
	if [ "$PID" == "" ] ; then
	  echo 'dnsmasq not running'
	else
	  kill -HUP "$PID"
	fi
}

start()
{
	/bin/mkdir -p /var/dnsmasq/
	/bin/mkdir -p /var/dnsmasq/conf.d
	ln -sf $EXEC_CONF /var/dnsmasq/dnsmasq.conf 

	local re=$(logchk)
	
	$EXEC_PATH/$EXEC_NAME -u $USER -q --conf-file=$EXEC_CONF
}

stop()
{
	killall -9 $EXEC_NAME
}


case "$1" in
	start)
		PID=$(pgrep dnsmasq)
		if [ "$PID" == "" ] ; then
		  start
		else
		  echo 'dnsmasq is already running !!!'
		fi
		exit 0
		;;
		
	stop)
		stop
		exit 0
		;;
	
	restart)
		stop
		start
		exit 0
		;;
		
	reload)
		reload
		exit 0
		;;
		
	log)
		re=$(logchk $@)
		if [ $re -eq 1 ]; then
			stop
			start
		fi
		exit 0
		;;
	*)
		echo "$0: unrecognized option $1"
		exit 1
		;;

esac