#!/bin/sh
#-------------------------------------------------------------------------------
# Eisfair configuration generator script
# Copyright (c) 2007 - 2016 the eisfair team, team(at)eisfair(dot)org
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#-------------------------------------------------------------------------------

#echo "Executing $0 ..."
#exec 2> /tmp/ssmtp-trace$$.log
#set -x

# read base configuration file for domain
. /etc/config.d/base

. /etc/config.d/dhcpd

serverip_mask=$(/var/install/bin/netcalc interface ipv4 eth0)
servernetwork=$(/var/install/bin/netcalc network ${serverip_mask})
servermask="${serverip_mask#* }" 
serverbrc=$(/var/install/bin/netcalc broadcast ${serverip_mask})


# ------------------------------------------------------------------------------
# creating/edit config file
# ------------------------------------------------------------------------------
idx=1
{
    echo "#----------------------------------------------------------------------"
    echo "# Do not edit this file directly, modify '/etc/config.d/dhcpd' file and"
    echo "# re-run the /var/install/config.d/dhcpd.sh' command to update."
    echo "#----------------------------------------------------------------------"
    echo "option domain-name \"$DOMAIN_NAME\" ;"
    echo "option domain-name-servers $DNS_SERVER ;"
    echo "option broadcast-address $serverbrc ;"
    echo "option routers $DHCP_NETWORK_GATE ;"
    echo "option subnet-mask $servermask ;"
    echo "default-lease-time 600;"
    echo "max-lease-time 7200;"
    echo "log-facility local7;"
    echo "subnet $servernetwork netmask $servermask"
    echo "  {"
    while [ $idx -le 0$DHCP_DYNAMIC_N ]
    do
      eval tmp='$DHCP_DYNAMIC_'$idx'_ACTIVE'
      if [ "$tmp" = "yes" ]
      then
        eval range_ip='$DHCP_DYNAMIC_'$idx'_RANGE'
        echo "    range $range_ip ;"
      fi
      idx=$((idx+1))
    done    
    echo "  }"
    echo ""
    idx=1
    while [ $idx -le 0$DHCP_CLIENT_N ]
    do
      eval tmp='$DHCP_CLIENT_'$idx'_ACTIVE'
      if [ "$tmp" = "yes" ]
      then
        eval client_name='$DHCP_CLIENT_'$idx'_NAME'
        echo "host $client_name {"
        eval tmp='$DHCP_CLIENT_'$idx'_MAC'
        echo "    hardware ethernet $tmp ;"
        eval tmp='$DHCP_CLIENT_'$idx'_IPV4'
        echo "    fixed-address $tmp ;"
# only IPv4 or IPv6 service
        eval tmp='$DHCP_CLIENT_'$idx'_IPV6'        
#        [ -n "$tmp" ] && echo "    fixed-address6 $tmp ;"
        echo "    option host-name \"$client_name\";"
        echo "}"
      fi
      idx=$((idx+1))
    done
} > /etc/dhcp/dhcpd.conf

# Set rights for configuration file
chmod 0644 /etc/dhcp/dhcpd.conf
#chown root /etc/dhcp/dhcpd.conf


# ------------------------------------------------------------------------------
exit 0