#!/bin/bash
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
#
# See the License for the specific language governing permissions and
# limitations under the License.

# dib-lint: disable=setu setpipefail
if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
    set -x
fi
set -e

if [[ "$DISTRO_NAME" =~ (debian|ubuntu) ]] ; then
    service_name=netfilter-persistent
elif [[ "$DISTRO_NAME" =~ (centos|rhel7|fedora|openeuler|rocky) ]] ; then
    service_name=iptables
elif [[ "$DISTRO_NAME" == 'opensuse' ]] ; then
    # handle iptables through init.d instead of a service
    exit 0
elif [[ "$DISTRO_NAME" == 'gentoo' ]] ; then
    # for use in loops in both openrc and systemd
    service_name='iptables ip6tables'
else
    echo "Unsupported operating system $DISTRO_NAME"
    exit 1
fi

case "$DIB_INIT_SYSTEM" in
    upstart)
        # nothing to do
        ;;
    systemd)
        if [[ "$DISTRO_NAME" == 'gentoo' ]] ; then
            for service in ${service_name}; do
                systemctl enable "${service}-restore.service"
                systemctl enable "${service}-store.service"
            done
        else
            systemctl enable ${service_name}.service
        fi
        if [[ "$DISTRO_NAME" =~ (centos|rhel7|fedora|openeuler|rocky) ]] ; then
            systemctl enable ip6tables.service
        fi
        ;;
    openrc)
        for service in ${service_name}; do
            rc-update add "${service}" default
        done
        ;;
    *)
        echo "Unsupported init system $DIB_INIT_SYSTEM"
        exit 1
        ;;
esac