#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-only
# Copyright (C) 2019-present Team LibreELEC (https://libreelec.tv)

check_hosts() {
  grep -v "^#" /run/archr/hosts | grep "${1}"
}

# setup hostname
if [ -f /storage/.cache/hostname ]; then
  cat /storage/.cache/hostname >/proc/sys/kernel/hostname
fi

# setup /etc/hosts
rm -f /run/archr/hosts
if [ -f /storage/.config/hosts.conf ]; then
  cat /storage/.config/hosts.conf >/run/archr/hosts
  # add localhost to hosts if not present
  LOCALHOST_HOSTS=$(check_hosts "localhost")
  if [ -z "${LOCALHOST_HOSTS}" ]; then
    {
      echo "127.0.0.1 localhost"
      echo "::1 localhost ip6-localhost ip6-loopback"
    } >>/run/archr/hosts
  fi
  # add HOSTNAME to hosts if not present
  HOSTNAME=$(cat /proc/sys/kernel/hostname)
  HOSTNAME_HOSTS=$(check_hosts "${HOSTNAME}")
  if [ -z "${HOSTNAME_HOSTS}" ]; then
    echo "127.0.1.1 ${HOSTNAME}" >>/run/archr/hosts
  fi
fi

# setup /etc/resolv.conf
rm -f /run/archr/resolv.conf
if [ -f /storage/.config/resolv.conf ]; then
  cat /storage/.config/resolv.conf >/run/archr/resolv.conf
elif [ -f /dev/.kernel_ipconfig ] && [ -f /proc/net/pnp ]; then
  cat /proc/net/pnp >/run/archr/resolv.conf
else
  cat <<EOF >/run/archr/resolv.conf
nameserver 8.8.8.8
nameserver 8.8.4.4
EOF
fi