proxy/script/check-license-headers

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#!/bin/bash
#
# Copyright 2017 Istio Authors. All Rights Reserved.
#
# 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.
#
################################################################################
#
# Checks the source code files for proper license headers.
ISTIO_COPYRIGHT='Copyright 20[0-9][0-9] Istio Authors\. All Rights Reserved\.'
ISTIO_LICENSE='Apache License, Version 2\.0'
ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
function is_source_code_file() {
first_line="$(head -1 ${1} | xargs --null)"
filename="$(basename ${1})"
[[ "${filename}" == 'BUILD' ]] && return 0
[[ "${first_line}" == '#!/bin/bash' ]] && return 0
extension="$(echo ${1} | awk -F . '{if (NF>1) {print $NF}}')"
[[ "${extension}" == "c" ||
"${extension}" == "cc" ||
"${extension}" == "h" ||
"${extension}" == "py" ||
"${extension}" == "go" ||
"${extension}" == "bzl" ]] && return 0
return 1
}
BAD_LICENSE=0
for file in $(git ls-files)
do
base="$(echo ${file} | awk -F / '{print $1}')"
[[ "${base}" == "contrib" || "${base}" == "google" || "${base}" == "third_party" ]] && continue
if is_source_code_file "${file}"; then
istio_copyright_count="$(head -n 15 ${file} | grep "${ISTIO_COPYRIGHT}" | wc -l)"
istio_license_count="$(head -n 15 ${file} | grep "${ISTIO_LICENSE}" | wc -l)"
if [[ "${istio_copyright_count}" != 1 || "${istio_license_count}" != 1 ]]; then
echo ${file}
BAD_LICENSE=1
fi
fi
done
[[ ${BAD_LICENSE} == 0 ]] || (echo "Found invalid license headers." && exit 1)