wardend

#!/bin/bash

# Pri pouziti Apache + mod_perl se tento soubor nepouziva

#
# wardend
#
# Copyright (C) 2011-2012 Cesnet z.s.p.o
# Author(s): 	Tomas PLESNIK 	<plesnik@ics.muni.cz>
#		Jan SOUKAL	<soukal@ics.muni.cz>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in
#    the documentation and/or other materials provided with the
#    distribution.
# 3. Neither the name of the Cesnet z.s.p.o nor the names of its
#    contributors may be used to endorse or promote products derived from
#    this software without specific prior written permission.
#
# This software is provided ``as is'', and any express or implied
# warranties, including, but not limited to, the implied warranties of
# merchantability and fitness for a particular purpose are disclaimed.
# In no event shall the Cesnet z.s.p.o or contributors be liable for
# any direct, indirect, incidental, special, exemplary, or consequential
# damages (including, but not limited to, procurement of substitute
# goods or services; loss of use, data, or profits; or business
# interruption) however caused and on any theory of liability, whether
# in contract, strict liability, or tort (including negligence or
# otherwise) arising in any way out of the use of this software, even
# if advised of the possibility of such damage.

### BEGIN INIT INFO
# Provides:          	wardend
# Required-Start:    	$local_fs $network $syslog $time
# Required-Stop:     	$local_fs $syslog $time
# Default-Start:     	2 3 4 5
# Default-Stop:      
# Short-Description: 	Start the Warden server
# Description:       	Starts or stops server for exchange of events
#			among CSIRT teams 
### END INIT INFO

VERSION="0.2"

DAEMON="/usr/local/bin/warden-server.pl"
PID_FILE="/var/run/warden-server.pl.pid"
LOCK_FILE="/var/lock/warden-server"
SCRIPTNAME=`basename "$0"`

# check if daemon is present and executable
test -x $DAEMON || exit 0

if [ $UID -ne 0 ]; then
	echo "You must be root for runnnig this script!"
	exit 1
fi

usage() {
	echo "Usage: $0 [start|stop|status|restart|force-stop]"
	exit 1
}

check_status() {
	if /bin/ps axo pid,comm | grep -q "warden-serv*"; then
		STATUS=1	# true  - warden is running
	else
		STATUS=0	# false - warden is not running
	fi
}

get_pid() {
	PID=`ps axo pid,comm | grep "warden-serv*" | sed 's/^ \{1,4\}//g' | cut -f 1 -d " "`
	return $PID
}

warden_start() {
	check_status
	if [ $STATUS -eq 1 ]; then
		get_pid PID
		echo "Warden server daemon is running (pid $PID)."
	else
		logger -s "Starting Warden server daemon ..."
		$DAEMON
		PID=`cat $PID_FILE`
		logger -s "Warden server daemon is running (pid $PID)."
		touch $LOCK_FILE
	fi
}

warden_stop() {
	check_status
	if [ $STATUS -eq 1 ]; then
		logger -s "Stopping Warden server daemon ..."
		if [ -e $PID_FILE ]; then
			PID=`cat $PID_FILE`
			kill -1 $PID
			rm -f $LOCK_FILE
		logger -s "Warden server daemon (pid $PID) is stopped."
		else
			echo "Unable to stop Warden server daemon. Try to use: $SCRIPTNAME force-stop"
		fi
	else
		echo "Warden daemon is NOT running."
	fi
}

warden_status() {
	check_status
	if [ $STATUS -eq 1 ]; then
		get_pid PID
		echo "Warden daemon is running (pid $PID)."
		exit 0
	else
		echo "Warden daemon is NOT running."
		exit 1
	fi
}

warden_force_stop() {
	logger -s "Force stopping Warden server daemon ..."
	get_pid PID
	kill -9 $PID 1>/dev/null 2>&1
	if [ -e $PID_FILE ]; then
		rm -f $PID_FILE
	fi
	if [ -e $LOCK_FILE ]; then
		rm -f $LOCK_FILE
	fi
}

case $1 in
	status)
		warden_status
		;;
	start)
		warden_start
		;;
	stop)
		warden_stop
		;;
	force-stop)
		warden_force_stop
		;;
	restart)
		$0 stop
		sleep 1
		$0 start
		;;
	*)
		usage
		;;
esac

exit 0