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#!/bin/sh
# Copyright 1997, 1998 Patrick Volkerding, Moorhead, MN USA
# Copyright 2002 Slackware Linux, Inc., Concord, CA 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.
#
argv0=${0##*/}
warn() { echo "${argv0}: warning: $*" 1>&2; }
err() { echo "${argv0}: warning: $*" 1>&2; exit 1; }
usage=false
stdout=false
verbose=false
strip=false
files=false
msg=""
for opt; do
case ${opt} in
-h|--help) usage=true;;
-O|--stdout) stdout=true;;
-v|--verbose) verbose=true;;
-S|--strip-path) strip=true;;
--) break;;
-*) usage=true msg="unknown option '${opt}'";;
*) files=true;;
esac
done
if ! ${files} || ${usage} ; then
cat <<-EOF
${argv0}: Converts RPM archives to tar archives
Usage: ${argv0} [options] <rpms>
Options:
-h, --help This help screen (imagine that)
-O, --stdout Write tarball to stdout
-S, --strip-path Strip package name from tarball
-v, --verbose Verbose output
EOF
if [ -n "${msg}" ] ; then
err "${msg}"
else
exit 0
fi
fi
# allow for local development
if [ "${0#./}" != "${0}" -a -x "./rpmoffset" ] ; then
rpmoffset="./rpmoffset"
else
rpmoffset="rpmoffset"
fi
compress="cat"
case ${argv0#rpm} in
unpack) suffix="";;
2tar) suffix=".tar";;
2tarbz2) compress="bzip2" suffix=".tar.bz2";;
2tbz2) compress="bzip2" suffix=".tbz2";;
2tarlzma) compress="lzma" suffix=".tar.lzma";;
2tgz) compress="gzip" suffix=".tgz";;
2tarxz) compress="xz" suffix=".tar.xz";;
2txz) compress="xz" suffix=".txz";;
2tarzst) compress="zstd" suffix=".tar.zst";;
2targz|*) compress="gzip" suffix=".tar.gz";;
esac
case ${argv0} in
rpm2tar*) strip=true;;
esac
# try to get a temp dir using progressively older/crappier methods
WORKDIR=""
trap 'rm -rf "${WORKDIR}"' 0
WORKDIR=$(mktemp -d --tmpdir ${argv0}.XXXXXX 2>/dev/null)
if [ -z "${WORKDIR}" ] ; then
WORKDIR=$(mktemp -d -t ${argv0}.XXXXXX 2>/dev/null)
if [ -z "${WORKDIR}" ] ; then
[ -z "${TMPDIR}" ] && TMPDIR="/tmp"
WORKDIR=$(mcookie 2>/dev/null)
if [ -n "${WORKDIR}" ] ; then
WORKDIR="${TMPDIR}/${WORKDIR}"
else
WORKDIR="${TMPDIR}/$$"
fi
worked=false
if rm -rf "${WORKDIR}" ; then
if mkdir -m 700 -p "${WORKDIR}" ; then
worked=true
elif mkdir -p "${WORKDIR}" ; then
if chmod 700 "${WORKDIR}" ; then
worked=true
fi
fi
fi
if ! ${worked} ; then
err "${WORKDIR}: unable to create a temp directory"
fi
fi
fi
ret=0
dashdash=false
for file; do
if ! ${dashdash} ; then
case ${file} in
-v|--verbose) continue;;
-O|--stdout) continue;;
-S|--strip-path) continue;;
--) dashdash=true; continue;;
esac
fi
${verbose} && printf "Processing file: ${file} ... "
outfile=${file##*/}
outfile=${outfile%.rpm}
${strip} && base="" || base=${outfile%.src}
DEST="${WORKDIR}/${base}"
rm -rf "${DEST}"
if ! mkdir "${DEST}" ; then
rm -rf "${WORKDIR}" &
err "${file}: ${DEST}: unable to create working directory"
fi
# extract the CPIO from the RPM and unpack it
(
decompressor=""
# Disable rpm2cpio as it might be broken #249769,
# or it might be too old #292057
#if command -v rpm2cpio >/dev/null 2>&1 ; then
if false ; then
decompressor="rpm2cpio"
rpm2cpio "${file}"
else
# do it by hand :/
set -- $(${rpmoffset} -v < "${file}")
decompressor=$1
offset=$2
[ -z "${offset}" ] && err "unable to locate cpio offset (broken/unknown compression?)"
dd ibs=${offset} skip=1 if="${file}" 2>/dev/null | ${decompressor} -dc
fi
[ $? -ne 0 ] && echo "${argv0}: ${file}: failed to extract cpio via ${decompressor} (not actually an RPM?)" 1>&2
) | (
cd "${DEST}"
# filter stupid blocks info from cpio
cpio -i -m -d 2>/dev/null
)
if [ $? -ne 0 ] ; then
false
elif [ -n "${suffix}" ] ; then
# repack the files into the appropriate tar file
(
cd "${WORKDIR}"
tar cf - "./${base}"
) | ${compress} | (
if ${stdout} ; then
cat
else
cat > "${outfile}${suffix}"
fi
)
else
# just unpacking, so move the files
cp -pPR "${DEST}/" ./
fi
tret=$?
if [ ${tret} -eq 0 ] ; then
msg=OK
else
ret=${tret}
msg=FAIL
fi
${verbose} && echo ${msg}
rm -rf "${DEST}"
done
# No need for this as the trap will take care of it
#rm -rf "${WORKDIR}"
exit ${ret}
|
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