#!/bin/bash -

cd `dirname $0`

source net-vars
source util

ifconfig $BR_IFACE 2>/dev/null 1>/dev/null
if [ $? == 0 ]; then
  echo "$BR_IFACE seems already configured. Skipping bridge/TAP configuration."
  exit
fi

require_root

# Create bridge interface
ip link add name $BR_IFACE type bridge
ip addr add "$BR_NETWORK" dev $BR_IFACE
ip link set $BR_IFACE up
dnsmasq --interface=$BR_IFACE \
  --bind-interfaces \
  --dhcp-range=$BR_DHCP_RANGE \
  --pid-file="`pwd`/$DNSMASQ_PIDFILE"

modprobe tun
chmod 0666 /dev/net/tun

# Create TAP interfaces
for i in ${TAP_IFACES[@]}; do
  ip tuntap add dev $i mode tap user $TAP_USER
  ip link set $i up promisc on
done
ip link set ${TAP_IFACES[0]} master $BR_IFACE

# Allow packet forwarding
sysctl net.ipv4.ip_forward=1
sysctl net.ipv6.conf.default.forwarding=1
sysctl net.ipv6.conf.all.forwarding=1

# Forward packets from TAP interfaces to the Wi-Fi interface
set_iptables_rules -A

# vim ts=2 sts=2 sw=2 et