#!/bin/bash -x
# This file is part of Ian Kelling's automated-distro-installer
# Copyright (C) 2024 Ian Kelling

# 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 -eE -o pipefail
trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR

if [[ $EUID != 0 ]]; then
  echo "$0: error: expected to be root."
  exit 1
fi


sed 's/^/root:/' $FAI/distro-install-common/shadow/community0p | $ROOTCMD chpasswd -e

# todo, need to set static ip here
if ifclass demohost; then
  cat > $target/etc/network/interfaces <<EOF
# generated by FAI
auto lo eth0
iface lo inet loopback
iface eth0 inet dhcp
iface eth0 inet6 auto

source-directory /etc/network/interfaces.d
EOF
else
  ip6=$(getent ahosts $HOSTNAME |grep ^2001.*RAW| sed 's/ .*//' ||:)
  gateway6=2001:470:142::1

  # todo: this needs adjustment per machine
  internal_ip=10.0.0.25/16

  if ip l show dev bond0 &>/dev/null; then
    cat >$target/etc/network/interfaces <<EOF
auto lo
iface lo inet loopback

auto eth0
allow-bond eth0
iface eth0 inet manual
  bond-master bond0

auto eth1
allow-bond eth1
iface eth1 inet manual
  bond-master bond0

auto bond0
iface bond0 inet static
  bond-slaves none
  bond-mode 0
  bond-miimon 100
  address $internal_ip
  pre-up ip link add link bond0 name macvtap-bond0 type macvtap mode bridge
# no iptables files exist yet
#  post-up iptables-restore < /etc/default/iptables ; ip6tables-restore < /etc/default/ip6tables || :

auto macvtap-bond0
iface macvtap-bond0 inet static
  address $CIDR
  gateway $GATEWAYS
  post-up ip a add $internal_ip broadcast 10.0.255.255 dev macvtap-bond0

EOF

    # I'm not sure ipv6 works well with the macvtap stuff. todo: research.
    # anyways, other kvm hosts dont have it enabled.
    if false && [[ $ip6 ]]; then
      cat >>$target/etc/network/interfaces <<EOF
iface bond0 inet6 static
  pre-up echo 0 > /proc/sys/net/ipv6/conf/bond0/accept_dad
  address $ip6
  netmask 48
  gateway $gateway6
EOF
    fi

  else
    cat > $target/etc/network/interfaces <<EOF
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
address $CIDR
gateway $GATEWAYS
EOF

    if [[ $ip6 ]]; then
      cat >>$target/etc/network/interfaces <<EOF
iface eth0 inet6 static
pre-up echo 0 > /proc/sys/net/ipv6/conf/eth0/accept_dad
address $ip6
netmask 48
gateway $gateway6
EOF
    fi
  fi
fi

# previously had an else condition after
#elif ifclass VM || ifclass LINODE; then
# iface $NIC1 inet manual
# iface br0 inet dhcp
#   bridge_ports $NIC1
#   bridge_stp off
#   bridge_maxwait 0
# however, on t9, on startup, br0, became
# rename1 and didn't come up. i dunno why,
# but the bridge is for vms that I rarely use,
# so not bothering to figure it out.


##### end network setup  #####

# note: systemd-resolved + ifupdown causes networking.service to fail in t11,
# https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1907878
systemctl disable systemd-resolved
# rm first to remove any symlink
rm -f $target/etc/resolv.conf

if ifclass demohost || [[ $GATEWAYS != 209.51.188.* ]]; then
  cat >$target/etc/resolv.conf <<'EOF'
nameserver 8.8.8.8
EOF
else
  cat >$target/etc/resolv.conf <<'EOF'
domain fsf.org
search fsf.org
nameserver 209.51.188.16
nameserver 209.51.188.27
EOF
fi