#!/bin/sh

#set -e

# initramfs-tools header

PREREQ=""

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

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

# live-initramfs header

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

. /scripts/live-functions

log_begin_msg "Preconfiguring networking..."

# live-initramfs 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

udevtrigger
udevsettle

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
auto ${ifname}
iface ${ifname} inet static
    address ${ifaddress}
    netmask ${ifnetmask}
    gateway ${ifgateway}

EOF

	done
else
	if [ -z "${NETBOOT}" ]
	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
	if [ "$method" != dhcp ] || [ ! -x /root/usr/sbin/NetworkManager ]
	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
auto $i
iface $i inet $method

EOF

		done
	fi

	if [ ! -f /root/etc/resolv.conf -a -f /netboot.config ]
	then
		# create a resolv.conf if it is not present
		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-initramfs
search ${rc_search}
domain ${rc_search}
${rc_server0}
${rc_server1}
EOF

		cat /root/etc/resolv.conf >> /root/var/log/netboot.config
	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
#auto $i
#iface $i inet dhcp
#
#EOF
#
#	done
#fi

log_end_msg