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#!/bin/sh
# Copyright © 2024, 2025 Mattias Andrée (m@maandree.se)
#
# Copying and distribution of this script, with or without modification,
# are permitted in any medium without royalty provided the copyright
# notice and this notice are preserved. This script is offered as-is,
# without any warranty.
set -e
if ! test $# = 2 || test -t 0 || test -t 1; then
printf 'usage: %s tarball git-dir < version-info-file > checksum-listing\n' "$0" >&2
exit 1
fi
tarball="$1"
gitdir="$2"
urls="$(grep '^Tarball: ' | cut -d ' ' -f 2 | grep -v '^https://maandree.se/static/')"
workdir="$$.tmpdir"
rm -rf -- "${workdir}"
refdir="${workdir}/reference"
mkdir -p -- "${refdir}"
gunzip < "${tarball}" | (cd "${refdir}" && tar -x)
if test "$(printf '%s\n' "${refdir}"/* | wc -l)" = 1; then
refdir="$(printf '%s\n' "${refdir}"/*)"
fi
ln -s -- "$(cd -- "${gitdir}" && pwd)" "${workdir}/gitdir"
add_dirs () {
while read f; do
printf '%s\n' "$f"
while :; do
d="$(printf '%s\n' "$f" | sed 's|/[^/]*$||')"
if test "$d" = "$f"; then
break
fi
printf '%s\n' "$d"
f="$d"
done
done
}
gitfiles="$( (cd -- "${gitdir}" && git ls-files) | add_dirs | sort -u | tee -- "${workdir}/gitfiles")"
test -n "${gitfiles}"
tarfiles="$( (cd -- "${refdir}" && find) | sed 's/^\.\///' | sed '/^\.$/d' | add_dirs | sort -u | tee -- "${workdir}/tarfiles")"
test -n "${tarfiles}"
diff -u -- "${workdir}/gitfiles" "${workdir}/tarfiles" >&2
# the following line makes the safe assumption that $workdir (and $refdir) does not contain {}
xargs -I {} diff -u "${refdir}"/{} "${workdir}/gitdir"/{} < "${workdir}/gitfiles" >&2
getandcheck () {
url="$1"
number="$2"
curl -sL -- "${url}" > "${workdir}/downloaded-${number}.tar.gz"
checkdir="${workdir}/downloaded"
rm -rf -- "${checkdir}"
mkdir -p -- "${checkdir}"
gunzip < "${workdir}/downloaded-${number}.tar.gz" | (cd "${checkdir}" && tar -x)
if test "$(printf '%s\n' "${checkdir}"/* | wc -l)" = 1; then
checkdir="$(printf '%s\n' "${checkdir}"/*)"
fi
diff -ur -- "${refdir}" "${checkdir}" >&2
rm -rf -- "${checkdir}"
}
nr=1
for url in $urls; do
getandcheck "${url}" $(( nr++ ))
done
genfor () {
tool="$1"
name="$2"
sum="$(${tool} < "${tarball}" | cut -d ' ' -f 1)"
sums="$(printf '%s checksum: %s\n' "${name}" "${sum}")"
number=1
for url in $urls; do
sum="$($tool < "${workdir}/downloaded-${number}.tar.gz" | cut -d ' ' -f 1)"
test -n "$sum"
sums="$(printf '%s\n%s checksum: %s\n' "${sums}" "${name}" "${sum}")"
: $(( number++ ))
done
printf '%s\n' "${sums}" | sort -u
}
genfor sha224sum SHA224
genfor sha256sum SHA256
genfor sha384sum SHA384
genfor sha512sum SHA512
genfor sha512-224sum SHA512/224
genfor sha512-256sum SHA512/256
genfor sha3-224sum SHA3-224
genfor sha3-256sum SHA3-256
genfor sha3-384sum SHA3-384
genfor sha3-512sum SHA3-512
genfor b2sum BLAKE2b
rm -rf -- "${workdir}"
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