#!/bin/sh

#set -e

# initramfs-tools header

PREREQ=""

prereqs()
{
	echo "${PREREQ}"
}

case "${1}" in
	prereqs)
		prereqs
		exit 0
		;;
esac

# live-boot header

if [ -n "${NONETWORKING}" ]
then
	exit 0
fi

. /scripts/live-functions

log_begin_msg "Preconfiguring networking"

# live-boot script

IFFILE="/root/etc/network/interfaces"

if [ "${STATICIP}" = "frommedia" -a -e  "${IFFILE}" ]
then
	# will use existent /etc/network/interfaces
	log_end_msg
	exit 0
fi

cat > "${IFFILE}" << EOF
auto lo
iface lo inet loopback

EOF

udevadm trigger
udevadm settle

if [ -z "${NETBOOT}" -a -n "${STATICIP}" -a "${STATICIP}" != "frommedia" ]
then
	parsed=$(echo "${STATICIP}" | sed -e 's/,/ /g')

	for ifline in ${parsed}
	do
		ifname="$(echo ${ifline} | cut -f1 -d ':')"
		ifaddress="$(echo ${ifline} | cut -f2 -d ':')"
		ifnetmask="$(echo ${ifline} | cut -f3 -d ':')"
		ifgateway="$(echo ${ifline} | cut -f4 -d ':')"

cat >> "${IFFILE}" << EOF
allow-hotplug ${ifname}
iface ${ifname} inet static
    address ${ifaddress}
    netmask ${ifnetmask}
EOF

if [ -n "${ifgateway}" ]
then

cat >> "${IFFILE}" << EOF
    gateway ${ifgateway}

EOF

fi

	done
else
	if [ -z "${NETBOOT}" ] || [ -n "${DHCP}" ]
	then
		# default, dhcp assigned
		method="dhcp"
	else
		# make sure that the preconfigured interface would not get reassigned by dhcp
		# on startup by ifup script - otherwise our root fs might be disconnected!
		method="manual"
	fi

	# iterate the physical interfaces and add them to the interfaces list and also add when ethdevice= called on cmdline
	if [ "${method}" != dhcp ] || ([ ! -x /root/usr/sbin/NetworkManager ] && [ ! -x /root/usr/sbin/wicd ]) || [ ! -z "${ETHDEVICE}" ]
	then
		for interface in /sys/class/net/eth* /sys/class/net/ath* /sys/class/net/wlan*
		do
			[ -e ${interface} ] || continue
			i="$(basename ${interface})"

cat >> "${IFFILE}" << EOF
allow-hotplug ${i}
iface ${i} inet ${method}

EOF

		done
	fi

	if [ ! -f /root/etc/resolv.conf ] || [ -z "$(cat /root/etc/resolv.conf)" ]
	then
		if [ -f /netboot.config ]
		then
			# create a resolv.conf if it is not present or empty
			cp /netboot.config /root/var/log/netboot.config

			rc_search=$(cat netboot.config | awk '/domain/{print $3}')
			rc_server0=$(cat netboot.config | awk '/dns0/{print $5}')
			rc_server1=$(cat netboot.config | awk '/dns0/{print $8}')
			rc_server0="nameserver ${rc_server0}"

			if [ "${rc_server1}" = "0.0.0.0" ]
			then
				rc_server1=""
			else
				rc_server1="nameserver ${rc_server1}"
			fi

cat > /root/etc/resolv.conf << EOF
# /etc/resolv.conf
# Autogenerated by live-boot
search ${rc_search}
domain ${rc_search}
${rc_server0}
${rc_server1}
EOF

			cat /root/etc/resolv.conf >> /root/var/log/netboot.config
		fi
	fi
fi

#if [ ! -x /root/usr/sbin/NetworkManager ]
#then
#	for i in eth0 eth1 eth2 ath0 wlan0
#	do
#		grep -q "iface ${i}" ${IFFILE} && continue
#
#cat >> "${IFFILE}" << EOF
#allow-hotplug ${i}
#iface ${i} inet dhcp
#
#EOF
#
#	done
#fi

log_end_msg