android/scripts/hooks/pre-push

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#!/bin/bash
# Pre-push: Don't allow commits without Signed-off-by. Skip with "git push --no-verify".
# SPDX-FileCopyrightText: 2021-2024 Nextcloud GmbH and Nextcloud contributors
# SPDX-FileCopyrightText: 2021 Álvaro Brey Vilas <alvaro.brey@nextcloud.com>
# SPDX-License-Identifier: GPL-3.0-or-later
set -euo pipefail
z40=0000000000000000000000000000000000000000 # magic deleted ref
while read local_ref local_sha remote_ref remote_sha; do
if [ "$local_sha" != $z40 ]; then
if [ "$remote_sha" = $z40 ]; then
# New branch, examine all commits
range="$(git merge-base master $local_sha)..$local_sha"
else
# Update to existing branch, examine new commits
range="$remote_sha..$local_sha"
fi
# Check for commits without sign-off
commit=$(git rev-list --no-merges --grep 'Signed-off-by' --invert-grep "$range")
if [ -n "$commit" ]; then
echo >&2 "Found commits without sign-off in $local_ref. Aborting push. Offending commits:"
echo >&2 "$commit"
exit 1
fi
fi
done
exit 0