#!/bin/sh

# **********************************************************************
# Pandora FMS Agent Daemon launcher for Unix (AIX, HP-UX, SunOS, Linux)
# (c) 2008-2010 Artica ST
# (c) 2008-2010 Sancho Lerena <slerena@gmail.com>
#
# Please see http://www.pandorafms.org
# v3.2 Build 101115
# This code is licensed under GPL 2.0 license.
# **********************************************************************

### BEGIN INIT INFO
# Provides: pandora_agent
# Required-Start: $network
# Required-Stop: $network
# Default-Start: 2 3 5
# Default-Stop: 0 1 6
# Short-Description: Startup script daemon for Pandora FMS agent
# Description: Startup script daemon for Pandora FMS agent (linux)
### END INIT INFO

PATH=/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin
PANDORA_PATH=/etc/pandora
DAEMON=/usr/bin/pandora_agent
DAEMON_TENTACLE=/usr/bin/tentacle_server
LOGFILE=/var/log/pandora/pandora_agent.log
PANDORA_USER=root

# This function replace pidof, not working in the same way in different linux distros

pidof_pandora () {
	COLUMNS=400
	OS_NAME=`uname -s`
	if [ $OS_NAME = "HP-UX" ]
	then
		PANDORA_PID=`ps -ef | grep "/usr/bin/perl $DAEMON" | grep -v grep | awk '{print $2}'`
	elif [ "$OS_NAME" = "SunOS" ]
	then
		ZONENAME_CMD="/bin/zonename"
		TRUNCATED_DAEMON=`echo "$DAEMON $PANDORA_PATH" | cut -c1-20`
		if [ -x $ZONENAME_CMD ]
		then
			ZONE=`$ZONENAME_CMD`
		else
			ZONE=
		fi
		if [ "$ZONE" = "global" ]
		then
			PANDORA_PID=`ps -f -z global | grep "$TRUNCATED_DAEMON" | grep -v grep | head -1 | awk '{ print $2 }'`
		else
			PANDORA_PID=`ps -Af | grep "$TRUNCATED_DAEMON" | grep -v grep | head -1 | awk '{ print $2 }'`
		fi
	elif [ "$OS_NAME" = "Linux" ] && [ -x /usr/sbin/vzpid ]
	then
		# Virtuozzo/OpenVZ
		local _pid _ctid _pids
		_pids=`ps -Af | grep "$DAEMON $PANDORA_PATH" | grep -v grep | awk '{ print $2 }'`
		[ "$_pids" ] && for _pid in $_pids
		do
			_ctid=`/usr/sbin/vzpid $_pid | awk '$1 == '$_pid' { print $2 }'`
			if [ "X$_ctid" = "X0" ]
			then
				PANDORA_PID=$_pid
				break
			fi
		done
	else
		PANDORA_PID=`ps -Af | grep "$DAEMON $PANDORA_PATH" | grep -v grep | head -1 | awk '{ print $2 }'`
	fi
	
	echo $PANDORA_PID
}

if [ ! -f $DAEMON ]
then
	echo "Pandora FMS Agent not found at $DAEMON, please check setup"
	exit
fi

case "$1" in
	start)
		PANDORA_PID=`pidof_pandora`
		if [ ! -z "$PANDORA_PID" ]
		then
			echo "Pandora FMS Agent is currently running on this machine with PID $PANDORA_PID"
			echo "Cannot launch again. Aborting."
			exit 1
		fi
		su $PANDORA_USER -c "PATH=$PATH nohup $DAEMON $PANDORA_PATH >/dev/null 2>$LOGFILE &"
		sleep 2
		PANDORA_PID=`pidof_pandora`
		echo "Pandora FMS Agent is now running with PID $PANDORA_PID"
	;;
	
	stop)
		PANDORA_PID=`pidof_pandora`
		if [ -z "$PANDORA_PID" ]
		then
			echo "Pandora FMS Agent is not running, cannot stop it. Aborting now..."
			exit 1
		else
			echo "Stopping Pandora Agent."
			su $PANDORA_USER -c "kill $PANDORA_PID >/dev/null 2>&1"
		fi
	;;

	status)
		PANDORA_PID=`pidof_pandora`	
		if [ -z "$PANDORA_PID" ]
		then
			echo "Pandora FMS Agent is not running."
			exit 3
		else
			echo "Pandora FMS Agent is running with PID $PANDORA_PID."
			exit 0
		fi
	;;

	force-reload|restart)
		$0 stop
		sleep 2
		$0 start
	;;
	
	*)
	echo "Usage: /etc/init.d/pandora_agent_daemon {start|stop|restart|status}"
	exit 1
esac