a.williamson
1911a4960f
Custom Dockerfile-based build for an Ignition Edge gateway with pre-baked base gwbk, module registration, and admin password provisioning, backed by MariaDB.
88 lines
2.6 KiB
Bash
88 lines
2.6 KiB
Bash
#!/usr/bin/env bash
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set -euo pipefail
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shopt -s inherit_errexit
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###############################################################################
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# Retrieves third-party modules and verifies their checksums
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###############################################################################
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function main() {
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if [ -z "${SUPPLEMENTAL_MODULES}" ]; then
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return 0 # Silently exit if there are no supplemental modules to target
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fi
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retrieve_modules
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}
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###############################################################################
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# Download the modules
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###############################################################################
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function retrieve_modules() {
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IFS=', ' read -r -a module_install_key_arr <<< "${SUPPLEMENTAL_MODULES}"
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for module_install_key in "${module_install_key_arr[@]}"; do
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download_url_env="SUPPLEMENTAL_${module_install_key^^}_DOWNLOAD_URL"
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download_sha256_env="SUPPLEMENTAL_${module_install_key^^}_DOWNLOAD_SHA256"
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if [ -n "${!download_url_env:-}" ] && [ -n "${!download_sha256_env:-}" ]; then
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download_basename=$(basename "${!download_url_env}")
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wget --ca-certificate=/etc/ssl/certs/ca-certificates.crt --referer https://inductiveautomation.com/* "${!download_url_env}" && \
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[[ "notused" == "${!download_sha256_env}" ]] || echo "${!download_sha256_env}" "${download_basename}" | sha256sum -c -
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else
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echo "Error finding specified module ${module_install_key} in build args, aborting..."
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exit 1
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fi
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done
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}
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###############################################################################
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# Outputs to stderr
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###############################################################################
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function debug() {
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# shellcheck disable=SC2236
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if [ ! -z ${verbose+x} ]; then
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>&2 echo " DEBUG: $*"
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fi
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}
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###############################################################################
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# Print usage information
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###############################################################################
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function usage() {
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>&2 echo "Usage: $0 -m \"space-separated modules list\""
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>&2 echo " -m: space-separated list of module identifiers to download"
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}
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# Argument Processing
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while getopts ":hvm:" opt; do
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case "$opt" in
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v)
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verbose=1
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;;
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m)
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SUPPLEMENTAL_MODULES="${OPTARG}"
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;;
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h)
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usage
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exit 0
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;;
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\?)
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usage
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echo "Invalid option: -${OPTARG}" >&2
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exit 1
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;;
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:)
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usage
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echo "Invalid option: -${OPTARG} requires an argument" >&2
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exit 1
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;;
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esac
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done
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# shift positional args based on number consumed by getopts
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shift $((OPTIND-1))
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# exit on missing required args
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if [ -z "${SUPPLEMENTAL_MODULES:-}" ]; then
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usage
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exit 1
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fi
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main |