qusal/scripts/pgp-lint.sh
Ben Grande 04d1aaf63e
feat: find PGP keys from within the linter
- Find PGP keys using the same methods as other scripts;
- Lower threshold to 30 days by default;
- Add environment variable to set threshold;
- Add colors to distinguish expired from expires soon; and
- Add days until key expiration when it is below threshold.
2024-07-11 15:29:57 +02:00

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#!/bin/sh
## SPDX-FileCopyrightText: 2024 Benjamin Grande M. S. <ben.grande.b@gmail.com>
##
## SPDX-License-Identifier: AGPL-3.0-or-later
set -eu
command -v git >/dev/null || { echo "Missing program: git" >&2; exit 1; }
repo_toplevel="$(git rev-parse --show-toplevel)"
test -d "${repo_toplevel}" || exit 1
unset repo_toplevel
now="$(date +%s)"
fail="0"
find_tool="$(./scripts/best-program.sh fd fdfind find)"
if test -n "${1-}"; then
files=""
for f in "${@}"; do
test -f "${f}" || continue
test -r "${f}" || continue
extension="${f##*.}"
case "${extension}" in
asc|gpg) files="${files} ${f}";;
*) continue;;
esac
done
else
case "${find_tool}" in
fd|fdfind)
files="$(${find_tool} . -H -t f -e asc -e gpg | sort -d)"
;;
find)
files="$(find . -type f \( -name '*.asc' -o -name '*.gpg' \) | sort -d)"
;;
*) echo "Unsupported find tool" >&2; exit 1;;
esac
fi
if test -z "${files}"; then
exit 0
fi
for key in ${files}; do
data="$(gpg --no-keyring --no-auto-check-trustdb --no-autostart \
--with-colons --show-keys "${key}")"
nr="$(echo "${data}" | grep -Ec '^(p|s)ub:')"
## Threshold in days.
threshold="${PGP_LINT_THRESHOLD:-30}"
tty_stderr=0
if test -t 2; then
tty_stderr=1
fi
echo "${data}" | awk -v fail="0" -v key="${key}" -v nr="${nr}" \
-v threshold="${threshold}" -v now="${now}" -v color="${tty_stderr}" \
-F ':' '
BEGIN {
MAGENTA = ""
YELLOW = ""
RED = ""
RESET = ""
if (color == 1) {
MAGENTA = "\033[1;35m"
YELLOW = "\033[1;33m"
RED = "\033[1;31m"
RESET = "\033[0m"
}
}
/^(p|s)ub:/{
nlines++
if ($7 == "") {
if (nlines == nr ) { if (fail == 1) { exit 1 } }
next
}
if ($7 < now) {
message = MAGENTA key RESET ":" RED " expired " RESET ": " $5
print message >"/dev/stderr"
fail = 1
if (nlines == nr ) { if (fail == 1) { exit 1 } }
next
}
else if (($7 - now) < (60 * 60 * 24 * threshold )) {
remaining_days = int(($7 - now) / (60 * 60 * 24))
message_prefix = MAGENTA key RESET ":" YELLOW " expires in "
message_suffix = remaining_days " days" RESET ": " $5
message = message_prefix message_suffix
print message >"/dev/stderr"
fail = 1
if (nlines == nr ) { if (fail == 1) { exit 1 } }
next
}
if (fail == 1) {
exit 1
}
}' || fail="1"
done
if test "${fail}" = "1"; then
exit 1
fi