#! /bin/sh
### BEGIN INIT INFO
# Provides:          lirc
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Starts LIRC daemon.
# Description:       LIRC is used to control different
#                    infrared receivers and transceivers.
### END INIT INFO

load_modules ()
{
	MODULES_MISSING=false

	log_daemon_msg "Loading LIRC modules"
	for mod in $*; do
		if [ $mod = "udev" ]; then
			log_end_msg 0
			log_success_msg "Restarted via udev, don't reload modules"
			break
		else
			modprobe $mod 2> /dev/null || MODULES_MISSING=true
		fi
	done
	log_end_msg $?

	if $MODULES_MISSING; then
		log_failure_msg "Unable to load LIRC kernel modules. Verify your"
		log_failure_msg "selected kernel modules in /etc/lirc/hardware.conf"
		START_LIRCMD=false
		START_LIRCD=false
	fi
}

build_remote_args ()
{
	REMOTE_ARGS="$*"

	#For remote only detection support, we need
	#both REMOTE_DEVICE and TRANSMITTER_DEVICE undefined
	if [ -z "$REMOTE_DEVICE" ] && [ -z "$TRANSMITTER_DEVICE" ] && [ -c $dev ]; then
		REMOTE_DEVICE="$dev"
	fi

	#If we have a REMOTE_DEVICE or REMOTE_DRIVER defined (either because no devices
	#were defined, OR if we explicitly did), then populate REMOTE_ARGS
	if [ ! -z "$REMOTE_DEVICE" ] || [ ! -z "$REMOTE_DRIVER" ]; then
		if [ -n "$REMOTE_DEVICE" ] && [ "$REMOTE_DEVICE" != "none" ]; then
			REMOTE_ARGS="--device=$REMOTE_DEVICE $REMOTE_ARGS"
		fi
		if [ -n "$REMOTE_DRIVER" ] && [ "$REMOTE_DRIVER" != "none" ]; then
			REMOTE_ARGS="--driver=$REMOTE_DRIVER $REMOTE_ARGS"
		fi

		#Now, if we ALSO have a transmitter defined, add some args
		#To make the first lircd listen up
		if [ ! -z "$TRANSMITTER_DEVICE" ] || [ ! -z "$TRANSMITTER_DRIVER" ]; then
			REMOTE_ARGS="$REMOTE_ARGS --listen"
		fi
		REMOTE_ARGS="--output=$REMOTE_SOCKET $REMOTE_ARGS"
	fi
	echo $REMOTE_ARGS
}

build_transmitter_args ()
{
	TRANSMITTER_ARGS="$*"

	#Transmitters must be explicitly be defined
	if [ ! -z "$TRANSMITTER_DEVICE" ] || [ ! -z "$TRANSMITTER_DRIVER" ]; then
		if [ -n "$TRANSMITTER_DEVICE" ] && [ "$TRANSMITTER_DEVICE" != "none" ]; then
			TRANSMITTER_ARGS="--device=$TRANSMITTER_DEVICE $TRANSMITTER_ARGS"
		fi
		if [ -n "$TRANSMITTER_DRIVER" ] && [ "$TRANSMITTER_DRIVER" != "none" ]; then
			TRANSMITTER_ARGS="--driver=$TRANSMITTER_DRIVER $TRANSMITTER_ARGS"
		fi

		#Now, if we ALSO have a remote defined, add some args
		#To make the second lircd connect
		if [ ! -z "$REMOTE_DEVICE" ] || [ ! -z "$REMOTE_DRIVER" ]; then
			TRANSMITTER_ARGS="$TRANSMITTER_ARGS --connect=localhost:8765 --pidfile=/var/run/lirc/lircd1.pid"
		fi
		TRANSMITTER_ARGS="--output=$TRANSMITTER_SOCKET $TRANSMITTER_ARGS"
	fi
	echo $TRANSMITTER_ARGS
}

in_kernel_support() {
	if [ -d /sys/class/rc ]; then
		for file in `find /sys/class/rc/*/ -name protocols`; do
			if [ "$1" = "disable" ]; then
				echo "lirc" > $file
			else
				echo "none" > $file
				for protocol in `cat $file`; do
					echo "+${protocol}" > $file
				done
			fi
		done
	fi
}
. /lib/lsb/init-functions

test -f /usr/sbin/lircd || exit 0
test -f /usr/sbin/lircmd || exit 0

START_LIRCMD=true
START_LIRCD=true
START_IREXEC=true


if [ -f /etc/lirc/hardware.conf ];then
	. /etc/lirc/hardware.conf
fi

if [ ! -f /etc/lirc/lircd.conf ] || grep -q "^#UNCONFIGURED" /etc/lirc/lircd.conf; then
	if [ "$1" = "start" ]; then
		log_success_msg "No valid /etc/lirc/lircd.conf has been found."
		log_success_msg "Remote control support has been disabled."
		log_success_msg "Reconfigure LIRC or manually replace /etc/lirc/lircd.conf to enable."
	fi

	START_LIRCD=false
	START_LIRCMD=false
	START_IREXEC=false
fi

if [ ! -f /etc/lirc/lircmd.conf ] || grep -q "^#UNCONFIGURED" /etc/lirc/lircmd.conf; then
	START_LIRCMD=false
fi

if [ ! -f /etc/lirc/lircrc ] || grep -q "^#UNCONFIGURED" /etc/lirc/lircrc; then
	START_IREXEC=false
fi

#We need default socket locations
OLD_SOCKET="/dev/lircd"
if [ -z "$REMOTE_SOCKET" ]; then
	REMOTE_SOCKET="/var/run/lirc/lircd"
fi
if [ -z "$TRANSMITTER_SOCKET" ]; then
	TRANSMITTER_SOCKET="/var/run/lirc/lircd"
	#Now, if we ALSO have a remote defined,
	#change the default transmitter socket
	if [ ! -z "$REMOTE_DEVICE" ] || [ ! -z "$REMOTE_DRIVER" ]; then
		TRANSMITTER_SOCKET="${TRANSMITTER_SOCKET}1"
	fi
fi

case "$1" in
	start)
		if [ "$LOAD_MODULES" = "true" ] && [ "$START_LIRCD" = "true" ]; then
			load_modules $2 $REMOTE_MODULES $TRANSMITTER_MODULES $MODULES
			in_kernel_support "disable"
		fi

		if [ "$START_LIRCD" = "true" ]; then
			[ -d "/var/run/lirc" ] || mkdir -p "/var/run/lirc"
			log_daemon_msg "Starting remote control daemon(s) : LIRC "
			REMOTE_LIRCD_ARGS=`build_remote_args $REMOTE_LIRCD_ARGS`
			TRANSMITTER_LIRCD_ARGS=`build_transmitter_args $TRANSMITTER_LIRCD_ARGS`

			#if we have a remote defined, it is primary process
			if [ ! -z "$REMOTE_LIRCD_ARGS" ]; then
				#start-stop-daemon --start --quiet --oknodo --exec /usr/sbin/lircd -- $REMOTE_LIRCD_ARGS < /dev/null
				start-stop-daemon --start --quiet --oknodo --exec /usr/sbin/lircd -- --debug $REMOTE_LIRCD_ARGS < /dev/null
				log_end_msg $?
				if [ -S "$REMOTE_SOCKET" -a "$OLD_SOCKET" != "$REMOTE_SOCKET" ]; then
					rm -f $OLD_SOCKET && ln -s $REMOTE_SOCKET $OLD_SOCKET
				fi 

				#now if we additionally have a transmitter defined, it is secondary process
				if [ ! -z "$TRANSMITTER_LIRCD_ARGS" ]; then
					/usr/sbin/lircd $TRANSMITTER_LIRCD_ARGS < /dev/null
					if [ -S "$TRANSMITTER_SOCKET" ]; then
						rm -f ${OLD_SOCKET}1 && ln -s $TRANSMITTER_SOCKET ${OLD_SOCKET}1
					fi 
				fi
			elif [ ! -z "$TRANSMITTER_LIRCD_ARGS" ]; then
				start-stop-daemon --start --quiet --oknodo --exec /usr/sbin/lircd -- $TRANSMITTER_LIRCD_ARGS < /dev/null
				log_end_msg $?
				if [ -S "$TRANSMITTER_SOCKET" -a "$OLD_SOCKET" != "$TRANSMITTER_SOCKET" ]; then
					rm -f $OLD_SOCKET && ln -s $TRANSMITTER_SOCKET $OLD_SOCKET
				fi 
			else
				log_end_msg 1
			fi
		fi

		if [ "$START_LIRCMD" = "true" ]; then
			[ -d "/var/run/lirc" ] || mkdir -p "/var/run/lirc"
			log_daemon_msg "Starting remote control mouse daemon : LIRCMD "
			start-stop-daemon --start --quiet --oknodo --exec /usr/sbin/lircmd < /dev/null
			log_end_msg $?
		fi

		if [ "$START_IREXEC" = "true" ]; then
			[ -d "/var/run/lirc" ] || mkdir -p "/var/run/lirc"
			log_daemon_msg "Starting execution daemon: irexec"
			start-stop-daemon --start --quiet --oknodo --exec /usr/bin/irexec -- -d /etc/lirc/lircrc < /dev/null
			log_end_msg $?
		fi
		;;
	stop)
		in_kernel_support "enable"
		if [ "$START_IREXEC" = "true" ]; then
			log_daemon_msg "Stopping execution daemon: irexec"
			start-stop-daemon --stop --quiet --exec /usr/bin/irexec
			log_end_msg $?
		fi

		if [ "$START_LIRCMD" = "true" ]; then
			log_daemon_msg "Stopping remote control mouse daemon: LIRCMD"
			start-stop-daemon --stop --quiet --exec /usr/sbin/lircmd
			log_end_msg $?
		fi

		if [ "$START_LIRCD" = "true" ]; then
			log_daemon_msg "Stopping remote control daemon(s): LIRC"
			start-stop-daemon --stop --quiet --exec /usr/sbin/lircd
			log_end_msg $?
			[ -h "$OLD_SOCKET" ] && rm -f $OLD_SOCKET
			[ -h "${OLD_SOCKET}1" ] && rm -f ${OLD_SOCKET}1
		fi
		;;
	reload|force-reload)
		if [ "$START_IREXEC" = "true" ]; then
			start-stop-daemon --stop --quiet --signal 1 --exec /usr/bin/irexec
		fi

		if [ "$START_LIRCD" = "true" ]; then
			start-stop-daemon --stop --quiet --signal 1 --exec /usr/sbin/lircd
		fi

		if [ "$START_LIRCMD" = "true" ]; then
			start-stop-daemon --stop --quiet --signal 1 --exec /usr/sbin/lircmd
		fi
		;;
	restart)
		$0 stop
		#passes parameter $2 which is possibly our udev paramater
		$0 start $2
		;;
	*)
		echo "Usage: /etc/init.d/lircd {start|stop|reload|restart|force-reload}"
	exit 1
esac

exit 0