#!/bin/sh
### BEGIN INIT INFO
# Provides:          dspam
# Required-Start:    $local_fs $remote_fs
# Required-Stop:     $local_fs $remote_fs
# Should-Start:      mysql postgresql-8.3 postgresql-8.4
# Should-Stop:       mysql postgresql-8.3 postgresql-8.4
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: initscript for dspam
# Description:       dspam is a scalable, fast and statistical anti-spam filter
### END INIT INFO
#
# Authors:     Matthijs Mohlmann <matthijs@cacholong.nl>
#              Julien Valroff <julien@kirya.net>
# Original script based on the init script of pdns-recursor
# Reworked script based on the skeleton script of the initscripts package

PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="DSPAM Statistical anti-spam filter"
NAME=dspam
DAEMON=/usr/bin/$NAME
PIDFILE=/var/run/dspam/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME
USER=dspam

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh

# Define LSB log_* functions.
. /lib/lsb/init-functions

# Create directory for PIDFILE, if it does not exist
[ -d $(dirname $PIDFILE) ] || mkdir -p -m 755 $(dirname $PIDFILE)

# Make sure the directory for PIDFILE is owned by the user which runs dspam
chown --quiet $USER $(dirname $PIDFILE)

DAEMON_ARGS="--daemon $OPTIONS"

#
# Function that starts the daemon/service
#
do_start()
{
	# Return
	#   0 if daemon has been started
	#   1 if daemon was already running
	#   2 if daemon could not be started
	start-stop-daemon --start --quiet --pidfile $PIDFILE --chuid $USER --exec $DAEMON --test > /dev/null \
		|| return 1
	start-stop-daemon --start --quiet --pidfile $PIDFILE --chuid $USER --exec $DAEMON -- $DAEMON_ARGS < /dev/null > /dev/null 2>&1 \
		|| return 2
}

#
# Function that stops the daemon/service
#
do_stop()
{
	# Return
	#   0 if daemon has been stopped
	#   1 if daemon was already stopped
	#   2 if daemon could not be stopped
	#   other if a failure occurred
	start-stop-daemon --stop --quiet --retry=TERM/5/KILL/5 --pidfile $PIDFILE --name $NAME
	RETVAL="$?"
	[ "$RETVAL" = 2 ] && return 2
	rm -f $PIDFILE
	return "$RETVAL"
}

#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
	start-stop-daemon --stop --quiet --signal 1 --pidfile $PIDFILE --name $NAME
	return 0
}


case "$1" in

  start)
	if [ "$START" != "yes" ]; then
		[ "$VERBOSE" != no ] && log_daemon_msg "Not starting $DESC -- disabled."
		exit 0
	fi

	[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
	do_start
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;

  stop)
	[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
	do_stop
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;

  status)
	status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
	;;


  reload|force-reload)
	log_daemon_msg "Reloading $DESC" "$NAME"
	do_reload
	log_end_msg $?
	;;

  restart)
	if [ "$START" != "yes" ]; then
		$0 stop
		exit 0
	fi
	log_daemon_msg "Restarting $DESC" "$NAME"
	do_stop
	case "$?" in
	  0|1)
		do_start
		case "$?" in
			0) log_end_msg 0 ;;
			1) log_end_msg 1 ;; # Old process is still running
			*) log_end_msg 1 ;; # Failed to start
		esac
		;;
	  *)
		# Failed to stop
		log_end_msg 1
		;;
	esac
	;;

  *)
	echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload|reload|status}" >&2
	exit 3
	;;

esac

:
