mirror of
https://github.com/flatcar/scripts.git
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56 lines
1.4 KiB
Bash
56 lines
1.4 KiB
Bash
# Copyright (c) 2024 The Flatcar Maintainers.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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if [[ ${COREOS_OFFICIAL:-0} -ne 1 ]]; then
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SBSIGN_KEY="/usr/share/sb_keys/shim.key"
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SBSIGN_CERT="/usr/share/sb_keys/shim.pem"
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else
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SBSIGN_KEY="pkcs11:token=flatcar-dev-cert"
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unset SBSIGN_CERT
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fi
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PKCS11_MODULE_PATH="/usr/$(get_sdk_libdir)/pkcs11/azure_kms_pkcs11.so"
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PKCS11_ENV=(
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AZURE_KEYVAULT_URL="https://chewi-test.vault.azure.net/"
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PKCS11_MODULE_PATH="${PKCS11_MODULE_PATH}"
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AWS_KMS_PKCS11_DEBUG=1
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)
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get_sbsign_cert() {
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if [[ ${SBSIGN_KEY} != pkcs11:* || -s ${SBSIGN_CERT-} ]]; then
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return
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fi
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SBSIGN_CERT=$(mktemp -t signing-cert.XXXXXXXXXX.pem)
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info "Fetching ${SBSIGN_KEY} from Azure"
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# Needs Key Vault Reader role.
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env "${PKCS11_ENV[@]}" p11-kit export-object \
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--provider "${PKCS11_MODULE_PATH}" \
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"${SBSIGN_KEY};type=cert" \
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| tee "${SBSIGN_CERT}"
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}
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cleanup_sbsign_certs() {
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if [[ ${SBSIGN_CERT-} == "${TMPDIR-/tmp}"/* ]]; then
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rm -f -- "${SBSIGN_CERT}"
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fi
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}
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do_sbsign() {
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get_sbsign_cert
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info "Signing ${@:$#} with ${SBSIGN_KEY}"
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if [[ ${SBSIGN_KEY} == pkcs11:* ]]; then
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set -- --engine pkcs11 "${@}"
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fi
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# Needs Key Vault Crypto User role.
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sudo env "${PKCS11_ENV[@]}" sbsign \
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--key "${SBSIGN_KEY}" \
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--cert "${SBSIGN_CERT}" \
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"${@}"
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}
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