Tinkerbell.Sandbox/deploy/tls/generate.sh

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#!/usr/bin/env bash
set -xo pipefail
# update_csr will add the sans_ip to the csr
update_csr() {
local sans_ip="$1"
local csr_file="$2"
sed -i "/\"hosts\".*/a \ \"${sans_ip}\"," "${csr_file}"
}
# cleanup will remove unneeded files
cleanup() {
rm -rf ca-key.pem ca.csr ca.pem server.csr server.pem
}
# gen will generate the key and bundle
gen() {
local bundle_destination="$1"
local key_destination="$2"
cfssl gencert -initca /code/tls/csr.json | cfssljson -bare ca -
cfssl gencert -config /code/tls/ca-config.json -ca ca.pem -ca-key ca-key.pem -profile server /code/tls/csr.json | cfssljson -bare server
cat server.pem ca.pem >"${bundle_destination}"
mv server-key.pem "${key_destination}"
}
# main orchestrates the process
main() {
local sans_ip="$1"
local csr_file="/code/tls/csr.json"
local bundle_file="/certs/${FACILITY:-onprem}/bundle.pem"
local server_key_file="/certs/${FACILITY:-onprem}/server-key.pem"
if ! grep -q "${sans_ip}" "${csr_file}"; then
update_csr "${sans_ip}" "${csr_file}"
else
echo "IP ${sans_ip} already in ${csr_file}"
fi
if [ ! -f "${bundle_file}" ] && [ ! -f "${server_key_file}" ]; then
gen "${bundle_file}" "${server_key_file}"
else
echo "Files [${bundle_file}, ${server_key_file}] already exist"
fi
cleanup
}
main "$1"