#! /bin/sh

PREREQ=""
DESCRIPTION="Preconfiguring networking..."
IFFILE="/root/etc/network/interfaces"

. /scripts/casper-functions

prereqs()
{
       echo "$PREREQ"
}

case $1 in
# get pre-requisites
prereqs)
       prereqs
       exit 0
       ;;
esac

log_begin_msg "$DESCRIPTION"

if [ "${STATICIP}" == "frommedia" ] && [ -e  "$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

if [ -z "${NETBOOT}" -a -n "${STATICIP}" ] && [ "${STATICIP}" != "frommedia" ]; then
    parsed=$(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
    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

log_end_msg