#!/bin/sh -e
#
# 2020 Timothée Floure (timothee.floure@ungleich.ch)
#
# This file is part of cdist.
#
# cdist 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 3 of the License, or
# (at your option) any later version.
#
# cdist 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 cdist. If not, see <http://www.gnu.org/licenses/>.
#


os=$(cat "$__global/explorer/os")

case "$os" in
   alpine)
      __package unbound --state present
   ;;
   *)
      printf "Your operating system (%s) is currently not supported by this type (%s)\n" "$os" "${__type##*/}" >&2
      printf "Please contribute an implementation for it if you can.\n" >&2
      exit 1
   ;;
esac

# Required parameters:
DNS64_PREFIX=$(cat "$__object/parameter/dns64_prefix")
export DNS64_PREFIX
FORWARD_ADDRS=$(cat "$__object/parameter/forward_addr")
export FORWARD_ADDRS

# Optional parameters:
if [ -f "$__object/parameter/interface" ]; then
   INTERFACES=$(cat "$__object/parameter/interface")
   export INTERFACES
fi

if [ -f "$__object/parameter/access_control" ]; then
   ACCESS_CONTROLS=$(cat "$__object/parameter/access_control")
   export ACCESS_CONTROLS
fi

# Boolean parameters:
if [ -f "$__object/parameter/disable_ip4" ] && \
   [ -f "$__object/parameter/disable_ip6" ]; then
    echo "--disable-ip4 and --disable-ip6 cannot be used at the same time." >&2
    exit 1
fi

if [ -f "$__object/parameter/disable_ip4" ]; then
    export DO_IP4='no'
else
    export DO_IP4='yes'
fi

if [ -f "$__object/parameter/disable_ip6" ]; then
    export DO_IP6='no'
else
    export DO_IP6='yes'
fi

# Generate and deploy configuration files.
source_file="$__object/files/unbound.conf"
target_file="/etc/unbound/unbound.conf"

mkdir -p "$__object/files"
"$__type/files/unbound.conf.sh" > "$source_file"
require="__package/unbound" __file "$target_file" \
    --source "$source_file" \
    --owner root \
    --mode 644

# Restart unbound server after reconfiguration.
require="__file/$target_file" __service unbound --action restart