#!/bin/bash

# Copyright 2018-2020 Splunk

# 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.
#

SPLUNK_ETC_BAK="${SPLUNK_ETC_BAK:-/opt/splunk-etc}"

if [[ -f "${SPLUNK_ETC_BAK}/splunk.version" ]]; then
	IMAGE_VERSION_SHA=`cat ${SPLUNK_ETC_BAK}/splunk.version | sha512sum`

	if [[ -f "${SPLUNK_HOME}/etc/splunk.version" ]]; then
		ETC_VERSION_SHA=`cat ${SPLUNK_HOME}/etc/splunk.version | sha512sum`
	fi

	if [[ "x${IMAGE_VERSION_SHA}" != "x${ETC_VERSION_SHA}" ]]; then
    	echo Updating ${SPLUNK_HOME}/etc
    	(cd ${SPLUNK_ETC_BAK}; tar cf - *) | (cd ${SPLUNK_HOME}/etc; tar xf -)
	fi
fi