#!/bin/sh

# LibreRouter V0 Prototypes come with a fake MAC on all network interfaces
# Generate 4 random bytes on first boot, and assign arbitrary macaddr
# to all eth interfaces, prepending 02:, and appending a unique index

cat /etc/board.json  | grep librerouter
if [ $? -ne 0 ]
then
  echo "This is not a LibreRouter"
  exit 0
fi

dmesg | grep AR8327 > /dev/null
if [ $? -eq 0 ]
then
  echo "LibreRouter V0, lets randomize macs!"
else
  echo "LibreRouter V1"
  exit 0
fi

rand4bytes=$(head -c 256 /dev/urandom | md5sum | sed 's/\(..\)/\1:/g' | head -c 11)

uci set network.lan.macaddr="02:$rand4bytes":10
for index in 0 1; do
    uci set network.lm_net_eth$index=interface
    uci set network.lm_net_eth$index.proto=none
    uci set network.lm_net_eth$index.ifname=eth$index
    uci set network.lm_net_eth$index.macaddr="02:$rand4bytes":3$index
done

uci commit network

for index in 0 1 2; do
    uci set wireless."lm_wlan$index"_adhoc_radio$index.macaddr="02:$rand4bytes":5$index
done
uci commit wireless