#!/bin/bash

source /etc/default/snf-network

source $CONF

if [ ! -e $STATE_DIR/infra ]; then
  echo No infra file found!
  echo run: snf-network-build-node-infra
  exit 1
fi

source $STATE_DIR/infra

if [ $# -ne 3 ]; then
  echo "Usage: $0 <masq bridge> <subnet> <gateway>"
  exit 1
fi

#TODO include this in infra file
MASQ_BRIDGE=$1
SUBNET=$2
GATEWAY=$3


NETMASK=$(ipcalc $SUBNET | grep Netmask | awk '{print $4}')

ip addr add $GATEWAY/$NETMASK dev $MASQ_BRIDGE
iptables -t nat -A POSTROUTING -s $SUBNET \! -d $SUBNET -j MASQUERADE