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#!/bin/bash
# parameters and default values
ARCH="i686"
DATE=$(date +%Y.%m.%d)
#DATE="2024.07.10"
ISO="archlinux32-${DATE}-${ARCH}.iso"
OUTPUT_DIR="${HOME}/archisos"
#Andreas Baumann (sign) <mail@andreasbaumann.cc>
SIGN_KEY='16194A82231E9EF823562181C8E8F5A0AF9BA7E7'
# Archlinux 32 Release Key <release@archlinux32.org>
#SIGN_KEY='33CA3597B0D161AAE4173F65C17F1214114574A4'
usage() {
>&2 echo ""
>&2 echo "check-iso: checks sanity of ISOs built for Archlinux32 and returns data about the ISO"
>&2 echo ""
>&2 echo "possible options:"
>&2 echo " -h|--help: show this help and exit"
>&2 echo " --iso name of ISO to be checked, default is '${ISO}'."
>&2 echo " --output-dir where to write the isos, default is '${OUTPUT_DIR}."
>&2 echo " --check check sanity of the image, returns an exit code only."
>&2 echo " --expected-sign-key expected PGP key the ISO has to be signed with, default '${SIGN_KEY}'."
>&2 echo " --md5sum get md5 of the ISO."
>&2 echo " --sha512sum get sha512sum of the ISO."
>&2 echo " --sign-key get GPG signing key of the ISO."
>&2 echo " --size get size of the ISO."
>&2 echo " --kernel-version get version of the kernel on the ISO."
>&2 echo " --no-cleanup do not clean up tmpdir after run, for debugging."
[ -z "$1" ] && exit 1 || exit "$1"
}
# fail on first error
set -e
# cleanup hook
tmp_dir="$(mktemp -d)"
cleanup() {
if mountpoint -q "${tmp_dir}"; then
sudo umount "${tmp_dir}"
fi
rm -rf --one-file-system "${tmp_dir}"
}
trap cleanup EXIT
eval set -- "$(
getopt -o h \
--long help \
--long iso: \
--long output-dir: \
--long check \
--long expected-sign-key: \
--long md5sum \
--long sha512sum \
--long sign-key \
--long size \
--long kernel-version \
-n "$(basename "$0")" -- "$@" || \
echo usage
)"
iso="$ISO"
output_dir="${OUTPUT_DIR}"
check=0
expected_sign_key="${SIGN_KEY}"
md5sum=0
sha512sum=0
sign_key=0
size=0
kernel_version=0
while [ $# -gt 0 ]; do
case "$1" in
'--iso')
shift
iso="$1"
;;
'--output-dir')
shift
output_dir="$1"
;;
'--check')
check=1
;;
'--expected-sign-key')
shift
expected_sign_key="$1"
;;
'--md5sum')
md5sum=1
;;
'--sha512sum')
sha512sum=1
;;
'--sign-key')
sign_key=1
;;
'--size')
size=1
;;
'--kernel-version')
kernel_version=1
;;
'--help'|'-h')
usage 0
;;
'--')
shift
break
;;
*)
printf 'Whoops, option "%s" is not yet implemented!\n' "$1" >&2
exit 42
;;
esac
shift
done
if [ $# -gt 0 ]; then
>&2 echo 'Too many arguments.'
exit 2
fi
if [ "${md5sum}" = 1 ]; then
md5sum="$(
grep "\s${iso/}\$" "${output_dir}/md5sums" | \
awk '{print $1}'
)"
echo "${md5sum}"
fi
if [ "${sha512sum}" = 1 ]; then
sha512sum="$(
grep "\s${iso/}\$" "${output_dir}/sha512sums" | \
awk '{print $1}'
)"
echo "${sha512sum}"
fi
if [ "${sign_key}" = 1 -o "${check}" = 1 ]; then
sign_keys="$(
printf '%s\n' $(
gpg --status-fd=1 --verify "${output_dir}/${iso}.sig" "${output_dir}/${iso}" 2> /dev/null | \
grep '^\[GNUPG:] VALIDSIG [0-9A-F]\+ ' | \
cut -d' ' -f3
) | \
sort -u
)"
if [ $(echo "${sign_keys}" | grep -c '\S') -ne 1 ]; then
>&2 echo 'Not exactly one key used for signing the iso:'
>&2 echo "'${sign_keys}'"
exit 1
fi
sign_key="${sign_keys}"
if [ "${sign_key}" != "${expected_sign_key}" ]; then
>&2 printf "Isos are signed with key '%s' instead of '%s'.\n" \
"${sign_key}" \
"${expected_sign_key}"
exit 1
fi
if [ "${check}" = 0 ]; then
echo "${sign_key}"
fi
fi
if [ "${size}" = 1 ]; then
size="$(
printf 'scale=1; %s/1024/1024\n' "$(stat -c'%s' "${output_dir}/${iso}")" | \
bc
)"
echo "${size}"
fi
if [ "${kernel_version}" = 1 -o "${check}" = 1 ]; then
sudo mount -o loop,ro "${output_dir}/${iso}" "${tmp_dir}"
kernels="$(
printf '%s\n' $(
find "${tmp_dir}/arch" \
-maxdepth 1 \
-name 'pkglist.*.txt' \
-not -name 'pkglist.x86_64.txt' \
-execdir cat {} \; \
| sed '
s/^linux\s\+\([^-]\+-[^-]\+\)$/\1/
t
d
'
) | \
sort -u
)"
sudo umount "${tmp_dir}"
if [ $(echo "${kernels}" | grep -c '\S') -ne 1 ]; then
>&2 echo 'Not exactly one kernel on the iso:'
>&2 echo "${kernels}"
exit 1
fi
kernel_version="${kernels}"
if [ "${check}" = 0 ]; then
echo "${kernel_version}"
fi
fi
exit 0
|