# Copyright 2019 The TensorFlow 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. | |
# ============================================================================== | |
# Script to download a binary directly onto a build machine, with | |
# checksum verification. | |
set -e | |
die() { | |
printf >&2 "%s\n" "$1" | |
exit 1 | |
} | |
if [ "$#" -lt 3 ]; then | |
die "Usage: $0 <sha256sum> <destination-file> <url> [<url>...]" | |
fi | |
checksum="$1" | |
dest="$2" | |
shift 2 | |
temp_dest="$(mktemp)" | |
for url; do | |
wget -t 3 -O "${temp_dest}" "${url}" \ | |
&& printf "%s %s\n" "${checksum}" "${temp_dest}" | shasum -a 256 --check \ | |
|| { rm -f "${temp_dest}"; continue; } | |
mv "${temp_dest}" "${dest}" | |
break | |
done | |
[ -f "${dest}" ] | |
chmod +x "${dest}" | |
ls -l "${dest}" | |