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Improved GPG key handling #189

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Improved GPG key handling #189

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60 changes: 39 additions & 21 deletions scripts/verify-git-tag
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@
# mainstream/master
# Default ref: HEAD
set -euo pipefail
shopt -s extglob
: "${KEYRING_DIR_GIT=}" "${NO_CHECK=}" "${DEBUG=}" "${VERBOSE=0}"
unset GNUPGHOME tags tag hash_len format expected_hash BUILDER_DIR

Expand Down Expand Up @@ -37,33 +38,50 @@ case ${CHECK=signed-tag} in
;;
esac

case ${SHA1_IS_WEAK=1} in
(0|false) SHA1_IS_WEAK=;;
(1|true) SHA1_IS_WEAK='weak-digest sha1\nweak-digest sha224\n';;
(*) printf 'Invalid value for $SHA1_IS_WEAK: %q\n' "$SHA1_IS_WEAK">&2; exit 1;;
esac

case ${FORCE_KEYRING_REGEN=false} in
(false|true) :;;
(*) printf 'Invalid value for $FORCE_KEYRING_REGEN: %q\n' "$FORCE_KEYRING_REGEN">&2; exit 1;;
esac

if [ -n "$KEYRING_DIR_GIT" ]; then
GNUPGHOME="$(readlink -m "$KEYRING_DIR_GIT")"
export GNUPGHOME
if [ ! -d "$GNUPGHOME" ]; then
mkdir -p "$GNUPGHOME"
chmod 700 "$GNUPGHOME"
gpg --import qubes-developers-keys.asc
# Trust Qubes Master Signing Key
echo '427F11FD0FAA4B080123F01CDDFA1A3E36879494:6:' | gpg --import-ownertrust
fi
if [ qubes-developers-keys.asc -nt "$GNUPGHOME/pubring.gpg" ]; then
gpg --import qubes-developers-keys.asc
touch "$GNUPGHOME/pubring.gpg"
mkdir -p -m 0700 -- "$GNUPGHOME"
fi
maintainers=$(env | grep -oP '^ALLOWED_COMPONENTS_[a-fA-F0-9]{40}') || :
for maintainer in $maintainers
do
read -a allowed_components <<<"${!maintainer}"
COMPONENT="$(basename "$1")"
COMPONENT="${COMPONENT//./builder}"
if elementIn "$COMPONENT" "${allowed_components[@]}"; then
keyid=${maintainer#ALLOWED_COMPONENTS_}
gpg --import "$BUILDER_DIR/keys/$keyid.asc" || exit 1
echo "$keyid:6:" | gpg --import-ownertrust
{
flock 9
if [ "$FORCE_KEYRING_REGEN" = true ]; then rm -rf -- "$GNUPGHOME"/!(.|..|setup.lock); fi
if [[ qubes-developers-keys.asc -nt "$GNUPGHOME/import.done" ]]; then
gpg --import qubes-developers-keys.asc
# Trust Qubes Master Signing Key
echo '427F11FD0FAA4B080123F01CDDFA1A3E36879494:6:' | gpg --import-ownertrust
printf "weak-digest md5\nweak-digest ripemd160\n$SHA1_IS_WEAK" > "$GNUPGHOME/gpg.conf"
if [ qubes-developers-keys.asc -nt "$GNUPGHOME/pubring.gpg" ]; then
touch "$GNUPGHOME/pubring.gpg"
fi
maintainers=$(env | grep -oP '^ALLOWED_COMPONENTS_[a-fA-F0-9]{40}') || :
for maintainer in $maintainers
do
read -a allowed_components <<<"${!maintainer}"
COMPONENT="$(basename "$1")"
COMPONENT="${COMPONENT//./builder}"
if elementIn "$COMPONENT" "${allowed_components[@]}"; then
keyid=${maintainer#ALLOWED_COMPONENTS_}
gpg --import "$BUILDER_DIR/keys/$keyid.asc" || exit 1
echo "$keyid:6:" | gpg --import-ownertrust
fi
done
gpgconf --kill gpg-agent
touch -- "$GNUPGHOME/import.done"
fi
done
gpgconf --kill gpg-agent
} 9> "$GNUPGHOME/setup.lock"
fi

pushd "$1" > /dev/null || exit 2
Expand Down