74 lines
2.3 KiB
Bash
74 lines
2.3 KiB
Bash
#!/bin/bash
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# SPDX-Version: 3.0
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# SPDX-CreationInfo: 2025-06-17; WEIDNER, Marc S.; <msw@coresecret.dev>
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# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.installer.git
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# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
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# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
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# SPDX-FileType: SOURCE
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# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
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# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
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# SPDX-PackageName: CISS.debian.installer
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# SPDX-Security-Contact: security@coresecret.eu
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### Options in "GRUB_CMDLINE_LINUX" are always effective.
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### Options in "GRUB_CMDLINE_LINUX_DEFAULT" are effective ONLY during normal boot (NOT during recovery mode).
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guard_sourcing
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#######################################
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# Hardening Grub boot parameter.
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# Globals:
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# ARY_BOOTPARAM
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# TARGET
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# VAR_GRUB_CMDLINE_LINUX
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# VAR_GRUB_CMDLINE_LINUX_DEFAULT
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# VAR_NUKE
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# VAR_NUKE_HASH
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# Arguments:
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# None
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# Returns:
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# 0: on success
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#######################################
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update_grub_bootparameter() {
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### Declare Arrays, HashMaps, and Variables.
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declare var_nuke_string="" var_param="" var_label=""
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grub_extract_current_string
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# shellcheck disable=SC2034
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for var_param in "${ARY_BOOTPARAM[@]}"; do
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if [[ -z "${var_param}" ]]; then
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do_log "warn" "file_only" "4250() Empty GRUB parameter detected and skipped."
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continue
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fi
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if grep -qF -- "${var_param}" <<< "${VV_GRUB_CMDLINE_LINUX_DEFAULT}"; then
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do_log "info" "file_only" "4250() Skipping duplicate kernel parameter: '${var_param}'."
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continue
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fi
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VV_GRUB_CMDLINE_LINUX_DEFAULT="${VV_GRUB_CMDLINE_LINUX_DEFAULT} ${var_param}"
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done
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if [[ "${VAR_DROPBEAR}" == "true" ]]; then
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var_label="${HMP_PATH_ENCLABEL["/"]}"
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VV_GRUB_CMDLINE_LINUX="${VV_GRUB_CMDLINE_LINUX:+${VV_GRUB_CMDLINE_LINUX} }cryptdevice=${VAR_CRYPT_ROOT}:cryptroot root=/dev/mapper/${var_label}"
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fi
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if [[ "${VAR_NUKE}" == "true" ]]; then
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var_nuke_string="nuke=${VAR_NUKE_HASH}"
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# shellcheck disable=SC2034
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VV_GRUB_CMDLINE_LINUX="${VV_GRUB_CMDLINE_LINUX} ${var_nuke_string}"
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fi
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grub_finalize_string
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chroot_exec "${TARGET}" update-grub
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guard_dir && return 0
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}
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# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh
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