#!/bin/bash -e

# Copyright 2018- The Pixie Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# SPDX-License-Identifier: Apache-2.0

while read -r _ newsha _; do
	if [[ "${newsha}" == "0000000000000000000000000000000000000000" ]]; then
		continue
	fi

	author_name=$(git log -1 --pretty=format:"%an" "${newsha}")
	author_email=$(git log -1 --pretty=format:"%ae" "${newsha}")
	sign_off=$(git log -1 --pretty=format:"%b" "${newsha}" | grep "^Signed-off-by.*$")
	if [[ "${sign_off}" != "Signed-off-by: $author_name <$author_email>" ]]; then
			echo "======================================================================="
			echo "Please use -s|--signoff to sign off your agreement to the DCO."
			echo "======================================================================="
			exit 1
	fi
done
