[Pdns-dev] re-worked auth server init script

[Marc Haber]

Hi,

please consider the attached re-worked init script for the
authoritative server. It does away with the twisted backwards
NOTRUNNING variable which has confused me multiple times in the past.

doPC now returns a meaningful string if pdns is not running, which
eases the use of doPC in the big case, allowing the script to just
print $ret even in the "not running" case, and the pdns_running
function allows idioms like "if pdns_running; then".

Please test before committing, it is currently in the state "works for
me", and only on two test boxes

Greetings
Marc

-- 
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Marc Haber         | "I don't trust Computers. They | Mailadresse im Header
Mannheim, Germany  |  lose things."    Winona Ryder | Fon: *49 621 31958061
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#!/bin/sh
# chkconfig: - 80 75
# description: PDNS is a versatile high performance authoritative nameserver

### BEGIN INIT INFO
# Provides:          pdns
# Required-Start:    $remote_fs $network $syslog
# Required-Stop:     $remote_fs $network $syslog
# Should-Start:      $all
# Should-Stop:       $all
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start/stop PowerDNS authoritative server
# Description:       Start/stop PowerDNS authoritative server
### END INIT INFO

set -e

prefix=/usr
exec_prefix=${prefix}
BINARYPATH=${exec_prefix}/bin
SBINARYPATH=${exec_prefix}/sbin
SOCKETPATH=/var/run

[ -f "$SBINARYPATH/pdns_server" ] || exit 0

[ -r /etc/default/pdns ] && . /etc/default/pdns

cd $SOCKETPATH
suffix=`basename $0 | cut -d- -f2- -s`
if [ $suffix ] 
then
	EXTRAOPTS=--config-name=$suffix
	PROGNAME=pdns-$suffix
else
	PROGNAME=pdns
fi

pdns_server="$SBINARYPATH/pdns_server $EXTRAOPTS"

doPC()
{
	if ! ret=$($BINARYPATH/pdns_control $EXTRAOPTS $1 $2 2> /dev/null); then
          ret="not running"
        fi
}

pdns_running()
{
	doPC ping
	if [ "$ret" = "not running" ]; then
	  return 1
	else
	  return 0
	fi
}

case "$1" in
	status)
		doPC status
		echo $ret
	;;	

	stop)
		echo -n "Stopping PowerDNS authoritative nameserver: "
		doPC quit
		echo $ret
	;;		


	force-stop)
		echo -n "Stopping PowerDNS authoritative nameserver: "
		killall -v -9 pdns_server
		echo "killed"
	;;

	start)
		echo -n "Starting PowerDNS authoritative nameserver: "
		if pdns_running; then
			echo "already running"
		else
			if $pdns_server --daemon --guardian=yes; then
				echo "started"
			else
				echo "error starting"
			fi
		fi 
	;;		

	force-reload | restart)
		echo -n "Restarting PowerDNS authoritative nameserver: "
		echo -n stopping and waiting.. 
		doPC quit
		sleep 3
		echo done
		$0 start
	;;

	reload) 
		echo -n "Reloading PowerDNS authoritative nameserver: "
		if pdns_running; then
			doPC cycle
			echo requested reload
		else
			echo not running yet
			$0 start
		fi 
	;;		
		
	monitor)
		if pdns_running; then 
			echo "already running"
		else
			$pdns_server --daemon=no --guardian=no --control-console --loglevel=9
		fi 
	;;		

	dump)
		doPC list
		echo $ret
	;;		

	show)
		if [ $# -lt 2 ]
		then
			echo Insufficient parameters
			exit
		fi
		echo -n "$2="
		doPC show $2
		echo $ret
	;;		

	mrtg)
		if [ $# -lt 2 ]
		then
			echo Insufficient parameters
			exit
		fi 
		if pdns_running; then
			doPC show $2 ; echo $ret
			if [ "$3x" != "x" ]
			then
				doPC show $3 ; echo $ret
			else
				echo 0
			fi
			doPC uptime ; echo $ret
			echo PowerDNS daemon
		else
			echo "not running"
		fi 
	
	;;		

	cricket)
		if [ $# -lt 2 ]
		then
			echo Insufficient parameters
			exit
		fi
		doPC show $2
		echo $ret
	
	;;		



	*)
	echo pdns [start\|stop\|force-reload\|reload\|restart\|status\|dump\|show\|mrtg\|cricket\|monitor]

	;;
esac