calyxos-scripts/pixel/download.sh

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#!/bin/bash
# SPDX-FileCopyrightText: 2022 The Calyx Institute
#
# SPDX-License-Identifier: Apache-2.0
#
# download:
#
# Download Pixel factory images and OTA updates from Google
#
#
##############################################################################
### SET ###
# use bash strict mode
set -euo pipefail
### TRAPS ###
# trap signals for clean exit
trap 'exit $?' EXIT
trap 'error_m interrupted!' SIGINT
### CONSTANTS ###
readonly script_path="$(cd "$(dirname "$0")";pwd -P)"
readonly vars_path="${script_path}/../vars"
readonly work_dir="${WORK_DIR:-/tmp/pixel}"
source "${vars_path}/pixels"
readonly device="${1}"
source "${vars_path}/${device}"
## HELP MESSAGE (USAGE INFO)
# TODO
### FUNCTIONS ###
download_factory_image() {
local factory_dir="${work_dir}/${device}/${build_id}"
mkdir -p "${factory_dir}"
local output="${factory_dir}/$(basename ${image_url})"
curl --http1.1 -C - -L -o "${output}" "${image_url}"
echo "${image_sha256} ${output}" | sha256sum --check --status
}
download_ota_zip() {
local ota_dir="${work_dir}/${device}/${build_id}"
mkdir -p "${ota_dir}"
local output="${ota_dir}/$(basename ${ota_url})"
curl --http1.1 -C - -L -o "${output}" "${ota_url}"
echo "${ota_sha256} ${output}" | sha256sum --check --status
}
# error message
# ARG1: error message for STDERR
# ARG2: error status
error_m() {
echo "ERROR: ${1:-'failed.'}" 1>&2
return "${2:-1}"
}
# print help message.
help_message() {
echo "${help_message:-'No help available.'}"
}
main() {
download_factory_image
# Not all devices need OTA, most are supported in image_unpacker
if [[ -n ${needs_ota-} ]]; then
download_ota_zip
fi
}
### RUN PROGRAM ###
main "${@}"
##