#!/bin/sh /etc/rc.common

START=95
STOP=10

extra_command "configure" "Configure service parameters"

start() {
	default_addr="44.127.254.254"
	if [ "$(uci get network.amprlan.ipaddr)" = "$default_addr" ] || \
		[ "$(uci get network.amprwan.ipaddr)" = "$default_addr" ]; then

		cat <<-EOF
		ampr-ripd is not fully configured.
		You must run /etc/init.d/ampr-ripd configure.
		EOF

		exit 1
	fi
	if [ ! -d /var/lib/ampr-ripd ]; then
		mkdir -p /var/lib/ampr-ripd
	fi
	ip tunnel change ttl 64 mode ipip tunl0
	ip link set dev tunl0 up
	ifconfig tunl0 mtu 1480
	tunnet=$(uci -q get ampr-ripd.network.tunnet)
	/usr/sbin/ampr-ripd -s -r -t 44 -i tunl0 -a "$tunnet"
}

stop() {
	ifconfig tunl0 down
	killall ampr-ripd
}

configure() {
	if [ -z "$1" ] || [ -z "$2" ] || [ -z "$3" ]; then
		cat <<-EOF

		Usage: /etc/init.d/ampr-ripd configure [amprhost] [amprmask] [amprnet]

		       amprhost is the 44 net address assigned to your OpenWrt host
		       amprmask is the full netmask of your AMPR assigned network
		       amprnet is the network number of your AMPR assigned network 

		   Eg. /etc/init.d/ampr-ripd configure 44.127.254.1 255.255.255.0 44.127.254.0
		EOF
		exit 1
	fi
	amprhost=$1
	amprmask=$2
	amprnet=$3

	cat <<-EOF
	Configuring ampr-ripd with values:

	amprhost=$amprhost
	amprmask=$amprmask
	amprnet=$amprnet
	EOF

	tunnet=$amprnet/$amprmask
	uci set ampr-ripd.network.tunnet="$tunnet"
	uci commit ampr-ripd
	uci set network.amprlan.ipaddr="$amprhost"
	uci set network.amprlan.netmask="$amprmask"
	uci set network.amprwan.ipaddr="$amprhost"
	uci set network.amprwan.netmask="$amprmask"
	for i in $(uci show network | awk -F= "/@rule/ && /lookup='44'/ {split(\$1, conf, /[.=]/); print conf[2]}"); do
		if [ "$(uci -q get "network.$i.priority")" = "45" ]; then
			uci set "network.$i.src=$tunnet"
		fi
	done
	uci commit network

	cat <<-EOF

	Now, do the following:
	/etc/init.d/ampr-ripd restart
	/etc/init.d/network restart
	EOF

	exit 0
}