1 files changed, 38 insertions, 0 deletions
diff --git a/aux/sign-tarballs.sh b/aux/sign-tarballs.sh
new file mode 100755
index 0000000..3ab2bb8
--- /dev/null
+++ b/aux/sign-tarballs.sh
@@ -0,0 +1,38 @@
+#!/bin/sh
+set -eu
+
+while getopts 'n:' flag; do
+	case "$flag" in
+		n)
+			PROJECT="$OPTARG"
+			;;
+		*)
+			exit 2
+			;;
+	esac
+done
+shift $((OPTIND -1))
+
+assert_arg() {
+	if [ -z "$1" ]; then
+		echo "Missing $2" >&2
+		exit 2
+	fi
+}
+
+assert_arg "${PROJECT:-}" '-n PROJECT'
+
+
+SIGNATURES="$(git notes --ref=refs/notes/signatures/tar.gz list | cut -d\  -f2)"
+for tag in $(git tag); do
+	COMMIT="$(git rev-list -n1 "$tag")"
+	if echo "$SIGNATURES" | grep -qF "$COMMIT"; then
+		continue
+	fi
+	echo "Adding missing signature to $tag" >&2
+	git notes --ref=refs/notes/signatures/tar.gz add -C "$(
+		git archive --format tar.gz --prefix "$PROJECT-$tag/" "$tag" |
+		gpg --output - --armor --detach-sign |
+		git hash-object -w --stdin
+	)" "$tag"
+done