#!/bin/sh

# Startup script for hostapd

# Copyright (C)2021-2024, Philip Munts dba Munts Technologies.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
#   this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

for IFACE in wlan0 wlan1 wlan2 wlan3 wlan4 wlan5 wlan6 wlan7 wlan8 wlan9 ; do

# Start hostapd on this wireless network interface IFF there is a
# configuration file for it

  if [ -f /usr/local/etc/hostapd-${IFACE}.conf ]; then
    /usr/local/libexec/hostapd -B -i $IFACE /usr/local/etc/hostapd-${IFACE}.conf -P /var/run/hostapd.${IFACE}.pid

# Start udhcpd on this wireless network interface IFF there is a
# configuration file for it

    if [ -f /usr/local/etc/udhcpd-${IFACE}.conf ]; then

# Add iptables -w rule for the DHCP server

      iptables -w -A INPUT -i ${IFACE} -p  udp -m conntrack --ctstate NEW --dport 67 -j ACCEPT

# Wait until the wireless network interface has been configured

      ifconfig ${IFACE} 2>&1 | grep -q 'inet addr'

      while [ $? -ne 0 ]; do
        sleep 1
        ifconfig ${IFACE} 2>&1 | grep -q 'inet addr'
      done

# Create an empty DHCP leases file for udhcpd

      touch /var/run/udhcpd.${IFACE}.leases

# Start udhcpd

      udhcpd -S /usr/local/etc/udhcpd-${IFACE}.conf
    fi
  fi
done