#!/bin/sh

DAEMON=bird
. /etc/init.d/modlibrc

CFGFILE='/tmp/flash/bird.conf'
[ -e /etc/bird.conf -a ! -e $CFGFILE ] && CFGFILE='/etc/bird.conf'

ar7ipaddr () {
	local SEC=$1
	local DEV=$2
	echo $(echo 'ar7cfg.'$SEC'['$DEV'].ipaddr' | ar7cfgctl -s)
}

getipaddr () {
	local ethmode=$(echo 'ar7cfg.ethmode' | ar7cfgctl -s)
	local devname=lan
	local section=ethinterfaces
	case $ethmode in
		ethmode_bridge)
			section=brinterfaces
			break
			;;
	esac
	local ipaddr=$(ar7ipaddr $section $devname)
	if [ -z "$ipaddr" ]; then
		devname=eth0
		ipaddr=$(ar7ipaddr $section $devname)
	fi
	if [ -z "$ipaddr" ]; then
		ipaddr=169.254.1.1
	fi
	echo $ipaddr
}

config() {
	if [ ! -e "$CFGFILE" ]; then
		echo "Creating $CFGFILE"
		{
			echo "router id $(getipaddr);"
			cat <<"EOF"
protocol device {
  scan time 10;
}
protocol direct {
  interface "lan", "wlan", "tun*";
}
protocol kernel {
  learn;
  scan time 20;
  import all;
  export all;
}
protocol static {
}
filter skipdefault {
  if net = 0.0.0.0/0 then reject;
  accept;
}
protocol rip mainrip {
  import filter skipdefault;
  export filter skipdefault;
}
protocol ospf mainospf {
  import filter skipdefault;
  export filter skipdefault;
  area 0 {
    interface "lan"  { cost 10; };
    interface "wlan" { cost 15; };
    interface "tun*" { cost 50; };
  };
}
EOF
		} > $CFGFILE
		/usr/bin/modsave flash
	fi
}

start() {
	modlib_startdaemon $DAEMON -c $CFGFILE
}

stop() {
	killall $DAEMON > /dev/null 2>&1
}

case $1 in
	''|load)
		modreg cgi 'bird' 'BIRD'
		modreg daemon $DAEMON
		[ "$CFGFILE" != '/etc/bird.conf' ] && modreg file bird conf 'bird.conf' 0 "bird_conf"

		[ "$BIRD_AUTOSTARTDELAY" -gt 0 -a "$BIRD_ENABLED" = 'yes' ] && sleep $BIRD_AUTOSTARTDELAY
		modlib_start $BIRD_ENABLED
		;;
	unload)
		modunreg file bird
		modunreg daemon $DAEMON
		modunreg cgi bird
		stop
		;;
	start)
		modlib_start
		;;
	stop)
		modlib_stop
		;;
	restart)
		modlib_restart
		;;
	status)
		modlib_status
		;;
	*)
		echo "Usage: $0 [load|unload|start|stop|restart|status]" 1>&2
		exit 1
		;;
esac

exit 0