#!/bin/sh
### BEGIN INIT INFO
# Provides:          ping903
# Required-Start:    $local_fs $network $remote_fs $syslog
# Required-Stop:     $local_fs $network $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: ICMP Monitoring Server
# Description:       High-performance ICMP monitoring server
### END INIT INFO

# Author: Sergey Poznyakoff <gray@gnu.org>

PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="ping903"
NAME=ping903
DAEMON=/usr/sbin/ping903
DAEMON_OPTS=""
CONFIG=/etc/ping903.conf
SCRIPTNAME=/etc/init.d/$NAME

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

# Read configuration variable file if it is present
# The file is supposed to define at most two variables:
#  START
#      The only recongized value is "no", which disables
#      the service.  Any other value (or undefined) means to
#      start the service.
#  DAEMON_OPTS
#      Command line to be passed to the server.  Not needed, really.
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

[ "START" = no ] && exit 0

[ ! -f $CONFIG ] && exit 0

PIDFILE=$(sed -r -n 's/^[[:space:]]*pidfile[[:space:]]+//p' $CONFIG)
if [ -n "$PIDFILE" ]; then
    PIDFILE_OPT="--pidfile $PIDFILE"
fi    

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

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.2-14) to ensure that this file is present
# and status_of_proc is working.
. /lib/lsb/init-functions

#
# 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_OPT \
		      --exec $DAEMON --test > /dev/null \
	|| return 1
    start-stop-daemon --start --quiet $PIDFILE_OPT \
		      --exec $DAEMON -- $DAEMON_OPTS \
	|| 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/30/KILL/5 \
		      $PIDFILE_OPT --name $NAME
    RETVAL="$?"
    [ "$RETVAL" = 2 ] && return 2
    rm -f $PIDFILE
    return "$RETVAL"
}

case "$1" in
    start)
	[ "$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 $?
	;;
    restart|force-reload)
	#
	# If the "reload" option is implemented then remove the
	# 'force-reload' alias
	#
	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|status|restart|force-reload}" >&2
	exit 3
	;;
esac

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