#!/bin/sh
#----------------------------------------------------------------------------
# /var/install/config.d/base-net.sh - network sub script
# Copyright (c) 2001-2017 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.
#----------------------------------------------------------------------------
PATH=/bin:/usr/bin:/sbin:/usr/sbin
# include base-config
. /etc/config.d/base

#----------------------------------------------------------------------------
# create loopback
#----------------------------------------------------------------------------
cat <<EOF >/etc/network/interfaces
# Network config file
auto lo
iface lo inet loopback

EOF

#echo "loopback 127.0.0.0" > /etc/networks
rm -f /etc/networks

#----------------------------------------------------------------------------
# add interface template (openvz venet...)
#----------------------------------------------------------------------------
[ -f /etc/network/interfaces.iface ] && cat /etc/network/interfaces.iface >> /etc/network/interfaces

#----------------------------------------------------------------------------
# add network interface list
#----------------------------------------------------------------------------
for idx in $(seq "0$IP_NET_N")
do
	interface_nr=$(/usr/bin/expr $idx - 1)

	eval name='$IP_NET_'$idx'_NAME'
	[ -z "$name" ] && name="eth$interface_nr"

	eval active4='$IP_NET_'$idx'_IPV4_ACTIVE'
	eval static4='$IP_NET_'$idx'_IPV4_STATIC_IP'
	eval active6='$IP_NET_'$idx'_IPV6_ACTIVE'
	eval static6='$IP_NET_'$idx'_IPV6_STATIC_IP'

	if [ "$active4" = "yes" -o "$active6" = "yes" ] ; then
		echo "auto $name" >>/etc/network/interfaces
	fi

	# IPv4 ------------------------------------------------------------------
	# use dhcp or static address
	if [ "$active4" = "yes" -a "$static4" = "no" ] ; then
		cat <<-EOF >>/etc/network/interfaces
		iface $name inet dhcp

		EOF

	elif [ "$active4" = "yes" ] ; then
		static_ip_use=true
		eval ipaddr='$IP_NET_'$idx'_IPV4_IPADDR'
		eval netmask='$IP_NET_'$idx'_IPV4_NETMASK'
		eval gateway='$IP_NET_'$idx'_IPV4_GATEWAY'
		eval point2p='$IP_NET_'$idx'_IPV4_POINTOPOINT'
		if [ -n "$ipaddr" -a "$ipaddr" != 0.0.0.0 ]
		then
#			network=$(/var/install/bin/netcalc network $ipaddr $netmask)
#			echo "localnet $network" >> /etc/networks
			cat <<-EOF >>/etc/network/interfaces
			iface $name inet static
			  address $ipaddr
			  netmask $netmask
			EOF
			{
			if [ -n "$gateway" ] ; then
				echo "  gateway $gateway"
				[ "$point2p" = "yes" ] && echo "  pointopoint $gateway"
			fi
			echo "  hostname $HOSTNAME"
			echo ""
			} >>/etc/network/interfaces
		fi
	fi

	# IPv6 ------------------------------------------------------------------
	# use dhcp or static address
	if [ "$active6" = "yes" -a "$static6" = "no" ] ; then
		cat <<-EOF >>/etc/network/interfaces
		iface $name inet6 dhcp

		EOF
	elif [ "$active6" = "yes" ] ; then
		static_ip_use=true
		eval ipaddr='$IP_NET_'$idx'_IPV6_IPADDR'
		eval netmask='$IP_NET_'$idx'_IPV6_NETMASKBITS'
		eval gateway='$IP_NET_'$idx'_IPV6_GATEWAY'
		eval point2p='$IP_NET_'$idx'_IPV6_POINTOPOINT'
		if [ -n "$ipaddr" -a "$ipaddr" != :: ] ; then
#			network=$(/var/install/bin/netcalc network $ipaddr $netmask)
#			echo "localnet $network" >> /etc/networks
			cat <<-EOF >>/etc/network/interfaces
		iface $name inet6 static
		  address $ipaddr
		  netmask $netmask
			EOF
			{
			if [ -n "$gateway" ] ; then
				echo "  gateway $gateway"
				[ "$point2p" = "yes" ] && echo "  pointopoint $gateway"
			fi
			echo "  hostname $HOSTNAME"
			echo ""
			} >>/etc/network/interfaces
		fi
	fi
done

#----------------------------------------------------------------------------
# write resolv.config
#----------------------------------------------------------------------------
if ${static_ip_use:-false} && [ -n "$DNS_SERVER$DOMAIN_NAME" ]
then
	/etc/init.d/dhcpcd stop >/dev/null 2>&1
	{
	[ -n "$DOMAIN_NAME"  ] && echo "search $DOMAIN_NAME"
	# include first internal BIND9 or other DNS server
	[ -f /etc/resolv.conf.internal ] && echo "nameserver 127.0.0.1"
	for dns_server in $DNS_SERVER
	do
		echo "nameserver $dns_server"
	done
	} >/etc/resolv.conf
fi

#----------------------------------------------------------------------------
# write hostname config file
#----------------------------------------------------------------------------
hostname $HOSTNAME
echo $HOSTNAME >/etc/hostname
[ "$IP_NET_1_IPV4_ACTIVE" == "yes" -a "$IP_NET_1_IPV4_STATIC_IP" = no ] && IP_NET_1_IPV4_IPADDR="127.0.1.1"
cat <<EOF >/etc/hosts
127.0.0.1 localhost
$IP_NET_1_IPV4_IPADDR $HOSTNAME.$DOMAIN_NAME $HOSTNAME

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

EOF


#----------------------------------------------------------------------------
# write config for modules treatment
#----------------------------------------------------------------------------
if [ -n "$MODULE_N" -a 0$MODULE_N -gt 0 ]
then
	MODPROBE_FILE_EIS='/etc/modprobe.d/modules-eis.conf'
	rm -f $MODPROBE_FILE_EIS
	idx='1'
	while [ $idx -le $MODULE_N ]
	do
    		eval mod='$MODULE_'$idx
    		eval act='$MODULE_'$idx'_ACTION'
    		eval strg='$MODULE_'$idx'_STRING'
    		case $act in
        	option)
			grep -qs "^options $mod $strg" $MODPROBE_FILE_EIS >/dev/null || echo "options $mod $strg" >>$MODPROBE_FILE_EIS
			;;
		alias)
            		grep -qs "^alias $strg $mod" $MODPROBE_FILE_EIS >/dev/null || echo "alias $strg $mod" >>$MODPROBE_FILE_EIS
        		;;
		blacklist) 
			grep -qs "^blacklist $mod" $MODPROBE_FILE_EIS >/dev/null || echo "blacklist $mod" >>$MODPROBE_FILE_EIS
			;;
		forcedstart) 
			grep -qs "^$mod" /etc/modules >/dev/null || echo "$mod" >> /etc/modules 
        		;;
		esac
		idx=$((idx+1))
	done
fi

#----------------------------------------------------------------------------
# restart network
#----------------------------------------------------------------------------
rc-update -q add networking boot
if /var/install/bin/ask.cui "Should the network be re-initialized immediately?"
then
	/etc/init.d/networking restart
fi


exit 0