#!/bin/bash
################################################################################

#  This program is free software; you can redistribute it and/or modify it
#  under the terms of the GNU General Public License as published by the
#  Free Software Foundation; either version 2 of the License, or (at
#  your option) any later version.
#
#  This program is distributed in the hope that it will be useful, but
#  WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
#  General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software Foundation,
#  Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

# Unless you change the below variables, this script assumes:
#  * Only one instance of hlds is being run
#  * hlds is installed in /usr/local/hlds/
#  * The Linux user "cs" exists
#  * The Linux user "cs" owns /usr/local/hlds/
#  * hlds_startup.sh exists in /home/cs/
# This script won't kill steam (run automatically when -autoupdate is specified)

################################################################################
. /lib/lsb/init-functions

##### You can change these variables #####
# If you're not running Debian/Ubuntu, the next line may need to be changed
ID=/usr/bin/id;
HLDS_PATH=/usr/local/hlds;
HLDS_PID=hlds.pid;
HLDS_USER=cs;
##### Don't change anything below here #####

start_hlds() {
	log_action_begin_msg "Starting hlds"

	#Make sure old hlds isn't running because they fight for same ip:port
	killall -q hlds_run
	if [ -f $HLDS_PATH/$HLDS_PID ] && [ -r $HLDS_PATH/$HLDS_PID ]; then
		read hpid < $HLDS_PATH/$HLDS_PID
		kill -TERM $hpid >/dev/null 2>&1
	fi

	#Allow full core dumps for debugging purposes
	ulimit -c unlimited

	#Run as correct user
	if [ "`$ID -u`" == "0" ]; then
		# stdout and stderr to /dev/null
		su - $HLDS_USER -c /home/$HLDS_USER/hlds_startup.sh >/dev/null 2>&1
	else
		/home/$HLDS_USER/hlds_startup.sh >/dev/null 2>&1
	fi
	log_action_end_msg $?
}

stop_hlds() {
	log_action_begin_msg "Stopping hlds_run"
	killall -q hlds_run
	log_action_end_msg $?

	log_action_begin_msg "Stopping steam"
	killall -q steam
	log_action_end_msg $?

	log_action_begin_msg "Stopping hlds"
	if [ ! -f $HLDS_PATH/$HLDS_PID ]; then
		log_action_end_msg 1	# Fail
		log_failure_msg "$HLDS_PID not found. (Are you sure hlds is running?)"
		return
	elif [ ! -r $HLDS_PATH/$HLDS_PID ]; then
		log_action_end_msg 1    # Fail
		log_failure_msg "Unable to read $HLDS_PID. (Are you the correct user?)"
		return
	fi
	read hpid < $HLDS_PATH/$HLDS_PID
	kill -TERM $hpid >/dev/null 2>&1
	log_action_end_msg $?

	if [ ! -f /proc/$hpid/exe ]; then	# If not running,
		rm -f $HLDS_PATH/$HLDS_PID	# Delete the pid file
	fi
}


case "$1" in
	start)
		start_hlds
		;;
	stop)
		stop_hlds
		;;
	restart)
		stop_hlds
		log_action_begin_msg "Sleeping"
		sleep 2
		log_action_end_msg $?
		start_hlds
		;;
	*)
		echo "usage: $0 {start|stop|restart}"  
esac