#!/bin/sh

opkg install /ipks/*
ip link set eth0 mtu 1460

# Extract instance_num of CF instance. The default value is 1.
instance_num=1
bridged_host_network=false
words=$(cat /proc/cmdline)
while
    word=${words%%" "*}
    if echo "$word" | grep "instance_num"; then
        instance_num=${word#*"="}
    fi
    if echo "$word" | grep "bridged_host_network=true"; then
        bridged_host_network=true
    fi
    next=${words#*" "}
    [ "$words" != "$next" ]
do
    words=$next
done

rule_name=$(uci add network rule)

# Setup wan based on instance_num. Interface wan will occupy 192.168.96.X.
if $bridged_host_network; then
    uci set network.wan.gateway="192.168.96.1"
    uci set network.wan.netmask="255.255.255.0"
else
    d_class_wan_gateway=$(expr $instance_num \* 4 - 3);
    uci set network.wan.gateway="192.168.96."$d_class_wan_gateway
    uci set network.wan.netmask="255.255.255.252"
fi
d_class_wan_ipaddr=$(expr $instance_num \* 4 - 2);
d_class_wan_broadcast=$(expr $instance_num \* 4 - 1);
uci set network.wan.ipaddr="192.168.96."$d_class_wan_ipaddr
uci set network.wan.broadcast="192.168.96."$d_class_wan_broadcast

# Setup wifi0 and wifi1 based on instance_num.
# Interfaces wifi0 and wifi1 will occupy 192.168.2.X - 192.168.33.X.
c_class_wifi=$(expr \( $instance_num + 3 \) / 2)
d_class_wifi0=$(expr \( $instance_num % 2 \* 128 \) + 1)
d_class_wifi1=$(expr \( $instance_num % 2 \* 128 \) + 65)
uci set network.wifi0.ipaddr="192.168."$c_class_wifi"."$d_class_wifi0
uci set network.wifi1.ipaddr="192.168."$c_class_wifi"."$d_class_wifi1

uci commit

# Regarding hostapd issue of OpenWRT 22.03.X versions, reboot it.
reboot