V8.00.000.2025.06.17

Signed-off-by: Marc S. Weidner <msw@coresecret.dev>

func/cdi_4200_boot/4250_update_grub_bootparameter.sh

@@ -0,0 +1,63 @@
+#!/bin/bash
+# SPDX-Version: 3.0
+# SPDX-CreationInfo: 2025-06-17; WEIDNER, Marc S.; <msw@coresecret.dev>
+# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.installer.git
+# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
+# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
+# SPDX-FileType: SOURCE
+# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
+# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
+# SPDX-PackageName: CISS.debian.installer
+# SPDX-Security-Contact: security@coresecret.eu
+
+### Options in "GRUB_CMDLINE_LINUX" are always effective.
+### Options in "GRUB_CMDLINE_LINUX_DEFAULT" are effective ONLY during normal boot (NOT during recovery mode).
+
+guard_sourcing
+
+#######################################
+# Hardening Grub boot parameter.
+# Globals:
+#   ARY_BOOTPARAM
+#   TARGET
+#   VAR_GRUB_CMDLINE_LINUX_DEFAULT
+# Arguments:
+#   None
+# Returns:
+#   0: on success
+#######################################
+update_grub_bootparameter() {
+  declare var_nuke_string="" var_param=""
+
+  grub_extract_current_string
+
+  for var_param in "${ARY_BOOTPARAM[@]}"; do
+
+    if [[ -z "${var_param}" ]]; then
+      do_log "warn" "file_only" "Empty GRUB parameter detected and skipped."
+      continue
+    fi
+
+    if grep -q --word-regexp "${var_param%%=*}" <<< "${VAR_GRUB_CMDLINE_LINUX_DEFAULT}"; then
+      do_log "info" "file_only" "Skipping duplicate kernel parameter: '${var_param}'."
+      continue
+    fi
+
+    VAR_GRUB_CMDLINE_LINUX_DEFAULT+=" ${var_param}"
+
+  done
+
+  if [[ "${VAR_NUKE}" == "true" ]]; then
+    var_nuke_string="nuke=${VAR_NUKE_HASH}"
+    VAR_GRUB_CMDLINE_LINUX+=" ${var_nuke_string}"
+  fi
+
+  grub_finalize_string
+
+  do_in_target "${TARGET}" update-grub
+
+  do_log "info" "file_only" "Setting GRUB kernel parameters: ${VAR_GRUB_CMDLINE_LINUX_DEFAULT}"
+
+  return 0
+}
+# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh