#!/bin/bash

#

# named           This shell script takes care of starting and stopping

#                 named (BIND DNS server).

#

# chkconfig: - 55 45

# description: named (BIND) is a Domain Name Server (DNS) \

# that is used to resolve host names to IP addresses.

# probe: true

# Source function library.

. /etc/rc.d/init.d/functions

# Source networking configuration.

[ -r /etc/sysconfig/network ] && . /etc/sysconfig/network

RETVAL=0

prog="named"

# Check that networking is up.

[ "${NETWORKING}" = "no" ] && exit 1

[ -r /etc/sysconfig/named ] && . /etc/sysconfig/named

[ -x /usr/sbin/named ] || exit 1

[ -r ${ROOTDIR}/etc/named.conf ] || exit 1

start() {

        # Start daemons.

	if [ -n "`/sbin/pidof named`" ]; then

		echo -n $"$prog: already running"

		return 1

	fi

        echo -n $"Starting $prog: "

	ckcf_options='';

	if [ -n "${ROOTDIR}" -a "x${ROOTDIR}" != "x/" ]; then

		OPTIONS="${OPTIONS} -t ${ROOTDIR}"

		ckcf_options="-t ${ROOTDIR}";

		if [ -s /etc/localtime ]; then

		    cp -fp /etc/localtime ${ROOTDIR}/etc/localtime

		fi;

	fi

	no_write_master_zones=0

	if [ -e /etc/selinux/config ]; then

           .  /etc/selinux/config

           if [ "$SELINUX" != 'disabled' ] && [ "$SELINUXTYPE" != "" ] && [ -d /etc/selinux/${SELINUXTYPE} ] && [ -e /etc/selinux/${SELINUXTYPE}/booleans  ]; then

	       . /etc/selinux/${SELINUXTYPE}/booleans 

	       if echo "$named_write_master_zones" | /bin/egrep -q '^[0-9]+$'; then

		   if [ "$named_write_master_zones" -eq 1 ] ; then

		       /bin/chown -f --from=root:named named:named $ROOTDIR/var/named

		   elif [ "$named_write_master_zones" -eq 0 ] ; then

		       /bin/chown -f --from=named:named root:named $ROOTDIR/var/named

		   fi;

               fi;

	   else

	       no_write_master_zones=1

	   fi;

	else

	    no_write_master_zones=1

        fi;

	if [ "$no_write_master_zones" -eq 1 ]; then

	    if [[ "$ENABLE_ZONE_WRITE" =  [yY1]* ]]; then

		/bin/chown -f --from=root:named named:named $ROOTDIR/var/named

	    elif [[ "$ENABLE_ZONE_WRITE" =  [nN0]* ]]; then	        

		/bin/chown -f --from=named:named root:named $ROOTDIR/var/named

	    fi;

	fi

        conf_ok=0;

	if [ -x /usr/sbin/named-checkconf ] && /usr/sbin/named-checkconf $ckcf_options; then

           conf_ok=1;

        else

	   RETVAL=$?;

	fi

	PROG=named

	if [[ "$ENABLE_SDB" = [yY1]* ]] && [ -x /usr/sbin/named_sdb ]; then

	    PROG=named_sdb;

	fi;

	if [ $conf_ok -eq 1 ]; then	   

	   daemon /usr/sbin/$PROG -u named ${OPTIONS};

	   RETVAL=$?;

	else

	   named_err=`/usr/sbin/named -g 2>&1 | sed s/\n/\\n/g`;

	   if [ `tty` != "/dev/console" ]; then

	       echo -e "\n$named_err";

	       echo -n  "Error in configuration file /etc/named.conf : ";

	   fi;

           failure $"Error in configuration file /etc/named.conf : $named_err";

           echo

           return $RETVAL;

        fi;

 	[ $RETVAL -eq 0 ] && touch /var/lock/subsys/named 

        echo

	return $RETVAL

}

stop() {

        # Stop daemons.

        echo -n $"Stopping $prog: "

	/usr/sbin/rndc stop >/dev/null 2>&1

	RETVAL=$?

	[ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/named || {

#        	killproc named 

#               Never do this! Can cause corrupt zone files!

	        /usr/sbin/rndc stop >/dev/null 2>&1

		RETVAL=$?

		[ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/named

		echo

		return $RETVAL 

	}

	success

        echo

	return $RETVAL

}

rhstatus() {

	/usr/sbin/rndc status

	return $?

}	

restart() {

	stop

# wait a couple of seconds for the named to finish closing down

	sleep 2

	start

}	

reload() {

        echo -n $"Reloading $prog: "

	p=`/sbin/pidof -o %PPID named`	

	RETVAL=$?

	if [ "$RETVAL" -eq 0 ]; then 

	    /usr/sbin/rndc reload >/dev/null 2>&1 || /usr/bin/kill -HUP $p;

	    RETVAL=$?

        fi

	[ "$RETVAL" -eq 0 ] && success $"$prog reload" || failure $"$prog reload"

        echo

	return $?

}

probe() {

	# named knows how to reload intelligently; we don't want linuxconf

	# to offer to restart every time

	/usr/sbin/rndc reload >/dev/null 2>&1 || echo start

	return $?

}  

# See how we were called.

case "$1" in

	start)

		start

		;;

	stop)

		stop

		;;

	status)

		rhstatus

		;;

	restart)

		restart

		;;

	condrestart)

		if [ -e /var/lock/subsys/named ]; then restart; fi

		;;

	reload)

		reload

		;;

	probe)

		probe

		;;

	*)

        	echo $"Usage: $0 {start|stop|status|restart|condrestart|reload|probe}"

		exit 1

esac

exit $?