#!/bin/sh
#
# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
#
# SPDX-License-Identifier: MPL-2.0
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, you can obtain one at https://mozilla.org/MPL/2.0/.
#
# See the COPYRIGHT file distributed with this work for additional
# information regarding copyright ownership.

abs_top_srcdir=@abs_top_srcdir@
abs_builddir=@abs_builddir@
prefix=@prefix@
includedir=@includedir@
install_dir="${DESTDIR}@prefix@"

headers_to_install() {
	find "${abs_top_srcdir}/lib" -name "*.h" -or -name "*.h.in" |
		sed -n \
		    -e "s|\.h\.in$|\.h|" \
		    -e "s|.*include/|${DESTDIR}${includedir}/|p" |
		sort -u
}

status=0

for header in $(headers_to_install); do
	if [ ! -f "${header}" ]; then
		echo "Missing $header"
		status=1
	fi
done

named_binary_path="${install_dir}/sbin/named"
if [ ! -x "${named_binary_path}" ]; then
	echo "ERROR: ${named_binary_path} does not exist or is not executable"
	status=1
fi

named_man_page_path="${install_dir}/share/man/man8/named.8"
if [ ! -f "${named_man_page_path}" ]; then
	echo "ERROR: ${named_man_page_path} does not exist"
	status=1
fi

if [ -n "${DESTDIR}" ]; then
	for expected_subdir in bin etc include lib sbin share; do
		echo "${install_dir}/${expected_subdir}" >> "${abs_builddir}/expected_dirs"
	done
	find "${install_dir}" -maxdepth 1 -mindepth 1 -type d | sort > "${abs_builddir}/existing_dirs"
	if ! diff -u "${abs_builddir}/expected_dirs" "${abs_builddir}/existing_dirs"; then
		echo "ERROR: Contents of DESTDIR do not match expectations"
		status=1
	fi
	rm -f "${abs_builddir}/expected_dirs" "${abs_builddir}/existing_dirs"
fi

exit $status