#!/bin/sh
DAEMON=/usr/sbin/hostapd
NAME=hostapd
DESC="HOSTAP Daemon"
HOSTAPD_CONF="/etc/hostapd.conf"
HOSTAPD_BACK="/etc/hostapd.back"
ARGS="/etc/hostapd.conf -B"
SOLO_CONF="/etc/sololink.conf"

test -f $DAEMON || exit 0

set -e

# Return true if parameter ($2) in config file ($1) is "True"
isEnabled() {
    grep -i -q "[[:space:]]*$2[[:space:]]*=[[:space:]]*True" $1
}

# Return true if the SSID in hostapd.conf is still the default
isDefault() {
    grep -i -q "^ssid=SoloLink_Default" $1
}

#Return the country code we should be using
getCountryCode() {
    mkdir -p /tmp/bootmnt
    mount /dev/mmcblk0p1 /tmp/bootmnt -o ro
    if [ ! -e /tmp/bootmnt/.reg ]; then
        echo "US"
    else
        cat /tmp/bootmnt/.reg
    fi
    umount /tmp/bootmnt
    rm -rf /tmp/bootmnt
}

case "$1" in
    start)
	# If the 3dr config file does not exist, or if it does and ApEnable
	# is True, start hostapd
	if [ ! -f $SOLO_CONF ] || isEnabled $SOLO_CONF ApEnable; then
	    echo -n "Starting $DESC: "
	    # back up hostapd.conf
	    cp ${HOSTAPD_CONF} ${HOSTAPD_BACK}
	    md5sum ${HOSTAPD_BACK} > ${HOSTAPD_BACK}.md5
	    sync
	    # Unique-ize the SSID if it has not been done
	    if isDefault ${HOSTAPD_CONF}; then
		# update SSID
		/usr/bin/hostapdconfig.py --ssid SoloLink_ --ssidmac wlan0-ap
		# initialize regulatory domain
		/usr/bin/hostapdconfig.py --country `getCountryCode`
	    fi
	    # set channel to that of wlan0 if it is associated
	    /usr/bin/hostapdconfig.py --channel wlan0
	    md5sum ${HOSTAPD_CONF} > ${HOSTAPD_CONF}.md5
	    sync
	    rm ${HOSTAPD_BACK} ${HOSTAPD_BACK}.md5
	    sync
	    start-stop-daemon -S -x $DAEMON -- $ARGS
	    echo "$NAME."
	fi
	;;
    stop)
	echo -n "Stopping $DESC: "
	start-stop-daemon -K -x $DAEMON
	echo "$NAME."
	;;
    restart)
	$0 stop
	$0 start
	;;
    reload)
	echo -n "Reloading $DESC: "
	killall -HUP $(basename ${DAEMON})
	echo "$NAME."
	;;
    *)
	echo "Usage: $0 {start|stop|restart|reload}"
	exit 1
	;;
esac

exit 0