#!/bin/bash

source /etc/default/snf-network

source $CONF

NETWORKS="$(ls $SHAREDDIR/networks/)"

HOSTNAME=$(hostname)

INTERFACES=$SHAREDDIR/interfaces/$HOSTNAME

ifup -i $INTERFACES -a

for NETWORK in $NETWORKS; do

  NETFILE=$SHAREDDIR/networks/$NETWORK
  NODEMAPFILE=$SHAREDDIR/mappings/$NETWORK-$HOSTNAME
  NODEINFRAFILE=$SHAREDDIR/infra/$HOSTNAME
  CLUSTERINFRAFILE=$SHAREDDIR/infra/cluster

  RT_TABLES=/etc/iproute2/rt_tables

  source $NODEINFRAFILE
  source $CLUSTERINFRAFILE
  source $NETFILE

  if [ "$MODE" == "routed" ]; then 
    VLAN=$LINK
    TABLE=rt_$NETWORK
    if [ "$TYPE" == "public" ]; then
      ARP_IP=$(ipcalc $SUBNET | grep HostMax | awk '{print $2}')
      
      ip link set $VLAN up

      echo 1 > "/proc/sys/net/ipv4/conf/$VLAN/proxy_arp"

      ID=$(wc -l < $RT_TABLES)
      echo $((ID+1)) $TABLE >> $RT_TABLES

      ip rule add iif $VLAN table $TABLE

      ip route add $SUBNET dev $VLAN table main 

      ip route add $SUBNET dev $VLAN table $TABLE
      ip route add default via $GATEWAY dev $VLAN table $TABLE
      
      echo 1 > /proc/sys/net/ipv4/conf/all/forwarding

      arptables -A OUTPUT -o $VLAN --opcode request -j mangle --mangle-ip-s  $ARP_IP 
    fi
  fi



  if [ "$MODE" == "bridged" ]; then
    BRIDGE=$LINK
    if [ ! -z "$GATEWAY" -a $ENABLE_MASQ ]; then
      if [ "$TYPE" == "private" ]; then 
        if [ "$HOSTNAME" == "$ROUTER" ]; then
          NETMASK=$(ipcalc $SUBNET | grep Netmask | awk '{print $4}')
          ip addr add $GATEWAY/$NETMASK dev $BRIDGE
          iptables -t nat -A POSTROUTING -s $SUBNET \! -d 192.168.0.0/16 -j MASQUERADE
        fi  
      fi
    fi
  fi

done