#!/bin/sh
#
# Modified by Per Liden <per@fukt.bth.se>, 2000, 2004.
#             Han Boetes <han@mijncomputer.nl>, 2004.
#
# Copyright 1997, 1998 Patrick Volkerding, Moorhead, Minnesota USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

if [ "$#" = "0" ]; then
	echo "usage: ${0##*/} <file.rpm> ..."
	exit 1
fi

# If $TMPDIR is not set, then use $TMP.
# If $TMP is not set either, then mktemp(1) will use /tmp.
${TMPDIR:=$TMP}

for file_rpm in $*; do
	if [ ! -f $file_rpm ]; then
		echo "$file_rpm: file not found"
		continue
	fi

	dir_tar_gz=`mktemp -d` || exit 1
	file_cpio=`mktemp` || exit 1
	file_cpio_z=`mktemp` || exit 1
	file_tar_gz=${file_rpm%.rpm}.tar.gz

	echo "$file_rpm => $file_tar_gz"

	dd ibs=`/usr/lib/rpm2targz/rpmoffset < $file_rpm` skip=1 if=$file_rpm of=$file_cpio_z 2> /dev/null

	if file $file_cpio_z | grep "bzip2 compressed data"; then
		bzip2 -dc < $file_cpio_z > $file_cpio
	else
		gzip -dc < $file_cpio_z > $file_cpio
	fi

	(	cd $dir_tar_gz
		cpio --quiet -i -m -d < $file_cpio
		find . -type d -perm 700 -exec chmod 755 {} \;
		tar cf - .
	) | gzip > $file_tar_gz

	rm -rf $file_cpio $file_cpio_z $dir_tar_gz
done

# End of file.