#! /bin/bash

# Copyright (C) 2015 GRNET S.A.
#
# 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.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.


set -e
. "@commondir@/common.sh"

CONF="$SNF_IMAGE_TARGET/etc/rc.conf"

networking_opts "$@"

if [ "$initialize" = yes ]; then
    cat "$CONF" > "$CONF.snf_image-$(date +%Y%m%d%H%M%S)-$RANDOM"
    exit 0
fi

if [ "$finalize" = yes ]; then
    exit 0
fi

case "$TYPE" in
    paravirtual)
        driver=vtnet
        driver_index=$paravirtual_index
        ;;
    rtl8139)
        driver=rl
        driver_index=$rtl8139_index
        ;;
    ne2k_isa|ne2k_pci)
        driver=ed
        driver_index=$((ne2k_isa_index + ne2k_pci_index))
        ;;
    i82551|i82557b|i82559er)
        driver=fxp
        driver_index=$((i82551_index + i82557b_index + i82559er_index))
        ;;
    pcnet)
        driver=pcn
        driver_index=$pcnet_index
        ;;
    e1000)
        driver=em
        dirver_index=$e1000_index
        ;;
    *)
        log_error "Unknown card type: \`$TYPE'"
esac

index=$((driver_index - 1))

tmp_config=$(mktemp)
add_cleanup rm -f "$tmp_config"

grep -v "ifconfig_$driver$index" "$CONF" > "$tmp_config"
cat "$tmp_config" > "$CONF"

if [ "$ipv4" = 'static' ]; then
    echo "ifconfig_$driver$index=\"inet $IP netmask $(cidr2mask "${SUBNET##*/}")\"" >> "$CONF"
    if [ -n "$GATEWAY" ]; then
        sed -i '/^defaultrouter=/d' "$CONF"
        echo "defaultrouter=\"$GATEWAY\"" >> "$CONF"
    fi
elif [ "$ipv4" = 'dhcp' ]; then
    echo "ifconfig_$driver$index=\"DHCP\"" >> "$CONF"
fi

if [ "$ipv6" != 'none' ]; then
    sed -i '/^ipv6_enable=/d' "$CONF"
    echo 'ipv6_enable="YES"' >> "$CONF"
fi

if [ "$ipv6" = 'dhcp' ]; then
    echo "ifconfig_$driver${index}_ipv6=\"inet6 -ifdisabled accept_rtadv\"" >> $CONF
    echo -e "dhcp6c_enable=\"YES\"\ndhcp6c_interfaces=\"$driver$index\"" >> $CONF
elif [ "$ipv6" = 'slaac' -o "$ipv6" = 'slaac_dhcp' ]; then
    echo "ifconfig_$driver${index}_ipv6=\"inet6 accept_rtadv\"" >> $CONF
    sed -i '/^rtsold_enable=/d' "$CONF"
    echo 'rtsold_enable="YES"' >> "$CONF"
fi

# vim: set sta sts=4 shiftwidth=4 sw=4 et ai :