#!/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 5 ]; then
  echo "Usage: $0 <routing table> <subnet> <gateway> <subnet6> <gateway6>"
  exit 1
fi

RT_TABLES=/etc/iproute2/rt_tables

TABLE=$1
SUBNET=$2
GATEWAY=$3
SUBNET6=$4
GATEWAY6=$5

VLAN=$PUBLIC_VLAN

ARP_IP=$(ipcalc $SUBNET | grep HostMax | awk '{print $2}')

ip link set $VLAN up

if [ -n "$SUBNET" ]; then
  arptables -D OUTPUT -o $VLAN --opcode request -j mangle --mangle-ip-s $ARP_IP 
  if [ -n "$GATEWAY" ]; then  
    ip route del default via $GATEWAY dev $VLAN table $TABLE
  fi
  ip route del $SUBNET dev $VLAN table $TABLE
  ip route del $SUBNET dev $VLAN table main 
  ip rule del iif $VLAN table $TABLE
fi

if [ -n "$SUBNET6" ]; then
  if [ -n "$GATEWAY6" ]; then
    ip -6 route del default via $GATEWAY6 dev $VLAN table $TABLE
  fi
  ip -6 route add $SUBNET6 dev $VLAN table $TABLE
  ip -6 route add $SUBNET6 dev $VLAN table main
  ip -6 rule add iif $VLAN table $TABLE
fi

sed -i 's/.*'"$TABLE"'$//' $RT_TABLES