56 lines
2.7 KiB
Bash
56 lines
2.7 KiB
Bash
#!/usr/bin/env bash
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# Copyright 2025 Universal Blue
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# Copyright 2025 The Secureblue Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software distributed under the License is
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# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and limitations under the License.
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set -oue pipefail
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MODULE_NAME="${1-}"
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if [ -z "$MODULE_NAME" ]; then
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echo "MODULE_NAME is empty. Exiting..."
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exit 1
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fi
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KERNEL_VERSION="$(rpm -q "kernel" --queryformat '%{VERSION}-%{RELEASE}.%{ARCH}')"
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PUBLIC_KEY_DER_PATH="../system/etc/pki/akmods/certs/akmods-secureblue.der"
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PUBLIC_KEY_CRT_PATH="./certs/public_key.crt"
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PRIVATE_KEY_PATH="/tmp/certs/private_key.priv"
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openssl x509 -in "$PUBLIC_KEY_DER_PATH" -out "$PUBLIC_KEY_CRT_PATH"
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PRIVATE_KEY_PATH="/tmp/certs/private_key.priv"
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SIGNING_KEY="./certs/signing_key.pem"
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cat "$PRIVATE_KEY_PATH" <(echo) "$PUBLIC_KEY_CRT_PATH" >> "$SIGNING_KEY"
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for module in /usr/lib/modules/"${KERNEL_VERSION}"/extra/"${MODULE_NAME}"/*.ko*; do
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module_basename="${module:0:-3}"
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module_suffix="${module: -3}"
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if [[ "$module_suffix" == ".xz" ]]; then
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xz --decompress "$module"
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openssl cms -sign -signer "${SIGNING_KEY}" -binary -in "$module_basename" -outform DER -out "${module_basename}.cms" -nocerts -noattr -nosmimecap
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/usr/src/kernels/"${KERNEL_VERSION}"/scripts/sign-file -s "${module_basename}.cms" sha256 "${PUBLIC_KEY_CRT_PATH}" "${module_basename}"
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/bin/bash ./sign-check.sh "${KERNEL_VERSION}" "${module_basename}" "${PUBLIC_KEY_CRT_PATH}"
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xz -C crc32 -f "${module_basename}"
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elif [[ "$module_suffix" == ".gz" ]]; then
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gzip -d "$module"
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openssl cms -sign -signer "${SIGNING_KEY}" -binary -in "$module_basename" -outform DER -out "${module_basename}.cms" -nocerts -noattr -nosmimecap
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/usr/src/kernels/"${KERNEL_VERSION}"/scripts/sign-file -s "${module_basename}.cms" sha256 "${PUBLIC_KEY_CRT_PATH}" "${module_basename}"
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/bin/bash ./sign-check.sh "${KERNEL_VERSION}" "${module_basename}" "${PUBLIC_KEY_CRT_PATH}"
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gzip -9f "${module_basename}"
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else
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openssl cms -sign -signer "${SIGNING_KEY}" -binary -in "$module" -outform DER -out "${module}.cms" -nocerts -noattr -nosmimecap
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/usr/src/kernels/"${KERNEL_VERSION}"/scripts/sign-file -s "${module}.cms" sha256 "${PUBLIC_KEY_CRT_PATH}" "${module}"
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/bin/bash ./sign-check.sh "${KERNEL_VERSION}" "${module}" "${PUBLIC_KEY_CRT_PATH}"
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fi
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done
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