#!/bin/sh

DAEMON=external
CONF_NAME=mod
. /etc/init.d/modlibrc

local LOG_FILE=/var/log/$DAEMON.log
local EXTERNAL_LINK=/mod/external
local EXTERNAL_DIRECTORY=`echo $MOD_EXTERNAL_DIRECTORY|sed 's/\/*$//'`
local EXTERNAL_CUSTOM_FILE=/tmp/flash/mod/rc.external

#parameter -n: no new-line at line end
#parameter -x: add trailing new-line, if logfile exists
log() {
	local addl=""
	local newl=""
	while [ "$1" == "-n" -o "$1" == "-x" ]; do
		[ "$1" == "-n" ] && newl="-n"
		[ "$1" == "-x" ] && [ -f $LOG_FILE ] && addl="\n"
		shift
	done
	[ -z "$*" ] && return
	echo $newl -e "$addl$*" | tee -a $LOG_FILE
	[ "$*" == "." -o "$*" == " ." ] && return
	echo "EXTERNAL: $*" > /dev/console
	logger -t EXTERNAL "$*"
}

check_date() {
	log -n "Waiting for time-synchronisation:"
	counter=225
	spaceit=" "
	while [ `date +%Y` -lt 2010 -a $counter -ne 0 ]; do
		log -n "$spaceit."
		spaceit=
		[ "$MOD_EXTERNAL_WAIT_INFINITE" == "yes" ] || let counter=$counter-1
		sleep 4
	done
	if [ `date +%Y` -lt 2010 ]; then
		log " timeout, failed."
		exit 1
	fi
	if [ `date +%Y` -gt $MOD_EXTERNAL_YEAR_MAX ]; then
		log " error, failed."
		[ -f /tmp/flash/mod/external.year ] && . /tmp/flash/mod/external.year
		exit 1
	fi
	log " done."
}

exec_rcs() {
	eventadd 1 "Running external: $1" 2>/dev/null
	if [ "$MOD_EXTERNAL_FREETZ_SERVICES" != "yes" ]; then
		if [ -z "$MOD_EXTERNAL_OWN_SERVICES" ]; then
			log "No services selected, failed."
			exit 1
		fi
		EXTERNAL_SERVICES="$MOD_EXTERNAL_OWN_SERVICES"
	else
		EXTERNAL_SERVICES="$(cat /etc/external.pkg 2>/dev/null) $MOD_EXTERNAL_OWN_SERVICES"
	fi
	if [ ! -d "$EXTERNAL_DIRECTORY" ]; then
		rm -rf "$EXTERNAL_LINK" 2>/dev/null
		log "Directory could not be found, failed."
		exit 1
	fi
	for pkg in $(cat /etc/static.pkg 2>/dev/null); do
		if echo " $EXTERNAL_SERVICES " | grep -q " $pkg "; then
			[ -x /etc/init.d/rc.$pkg ] && log "$(/etc/init.d/rc.$pkg $1 2>&1)"
		fi
	done
	[ -f $EXTERNAL_CUSTOM_FILE ] && log "$(. $EXTERNAL_CUSTOM_FILE $1 2>&1)"
}


start() {
	log -x "Starting external ($EXTERNAL_DIRECTORY):"

	if [ ! -e /tmp/.modstarted -o -e /var/run/onlinechanged ]; then
		log -n "Waiting for mod-startup:"
		spaceit=" "
		while [ true ]; do
			[ -e /tmp/.modstarted -a ! -e /var/run/onlinechanged ] && break
			log -n "$spaceit."
			spaceit=
			sleep 1
		done
		log " done."
	fi
	[ "$MOD_EXTERNAL_YEAR_MIN" == "yes" ] && check_date
	rm -rf "$EXTERNAL_LINK" 2>/dev/null
	ln -s "$EXTERNAL_DIRECTORY" "$EXTERNAL_LINK"

	exec_rcs load

	log "Starting external finished."
}

stop() {
	log -x "Stopping external ($EXTERNAL_DIRECTORY):"

	if [ -e /var/run/shutdown ]; then
		log -x "Stopping external is skipped because of system shutdown."
	else
		exec_rcs unload
	fi

	rm -rf "$EXTERNAL_LINK" 2>/dev/null

	log "Stopping external finished."
}


if [ $# -ge 2 ]; then
	# no output, every mounted partition runs this with its path
	echo "$EXTERNAL_DIRECTORY" | grep -q "$2" || exit 1
fi

create_custom_file() {
cat << 'EOF' > $EXTERNAL_CUSTOM_FILE
#!/bin/sh
case "$1" in
	load)
		;;
	unload)
		;;
esac
EOF
}

case $1 in
	""|load)
		modreg file mod rc_external rc.external 0 rc_external

		[ ! -e $EXTERNAL_CUSTOM_FILE ] && create_custom_file
		;;
	start)
		start
		;;
	stop)
		stop
		;;
	status)
		[ -d "$EXTERNAL_DIRECTORY" ] && echo running || echo stopped
		;;
	*)
		echo "Usage: $0 [start|stop|status] [mountpoint]" 1>&2
		echo "Logfile is stored here: $LOG_FILE"
		exit 1
		;;
esac

exit 0