Marc S. Weidner
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Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
106 lines
4.1 KiB
Bash
106 lines
4.1 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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guard_sourcing
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#######################################
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# Reading and extracting variables from "${PRESEED}".
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# Globals:
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# HMP_RECIPE_DEV_PARTITIONS
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# VAR_ARCHITECTURE
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# VAR_NUKE
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# VAR_PRESEED
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# VAR_RECIPE_FIRMWARE
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# VAR_RECIPE_HIGHEST_DEVICE
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# VAR_RECIPE_STRING
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# VAR_RECIPE_TABLE
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# architecture
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# Arguments:
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# None
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# Returns:
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# 0: on success
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# ERR_NO_VALID_RECIPE
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#######################################
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yaml_reader() {
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### Declare Arrays, HashMaps, and Variables.
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declare -Ag HMP_RECIPE_DEV_PARTITIONS=()
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declare -gx VAR_RECIPE_STRING="" VAR_RECIPE_HIGHEST_DEVICE="" VAR_ARCHITECTURE="" VAR_RECIPE_FIRMWARE="" VAR_NUKE="" \
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VAR_RECIPE_TABLE=""
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### Declare and substitute input files.
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declare -r var_if="${VAR_PRESEED}"
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### Search pattern for variables (recipe_<string>_active='true')
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declare -r var_search_pattern="^recipe_.*_active='true'"
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declare var_line="" var_middle_part="" var_highest_dev="" var_device="" var_fields="" var_partition="" \
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recipe_firmware_var="" recipe_nuke_var="" recipe_table_var=""
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### Read "${var_if}" line by line
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while IFS= read -r var_line; do
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### Check, if line matches the search pattern
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if [[ "${var_line}" =~ ^recipe_([^_]+)_active=\'true\' ]]; then
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var_middle_part="${BASH_REMATCH[1]}"
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VAR_RECIPE_STRING="${var_middle_part}"
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break
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fi
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#if [[ "${var_line}" =~ ${var_search_pattern} ]]; then
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# ### Extract the middle part or second position
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# var_middle_part=$(echo "${var_line}" | sed -E "s/^recipe_([^_]+)_active='true'/\1/")
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# VAR_RECIPE_STRING="${var_middle_part}"
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# ### Exit after first occurrence
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# break
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#fi
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done < "${var_if}"
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if [[ -n "${VAR_RECIPE_STRING}" ]]; then
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do_log "info" "file_only" "1251() Found active recipe string: '${VAR_RECIPE_STRING}'."
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else
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do_log "fatal" "file_only" "1251() Found NO active recipe string: '${VAR_RECIPE_STRING}'."
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exit "${ERR_NO_VALID_RECIPE}"
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fi
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### Extract architecture.
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VAR_ARCHITECTURE="${architecture}"
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### Extract chosen firmware.
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recipe_firmware_var="recipe_${VAR_RECIPE_STRING}_control_firmware"
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VAR_RECIPE_FIRMWARE="${!recipe_firmware_var}"
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### Extract the chosen Nuke mechanism.
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recipe_nuke_var="recipe_${VAR_RECIPE_STRING}_control_nuke"
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VAR_NUKE="${!recipe_nuke_var}"
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### Extract chosen partition table.
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recipe_table_var="recipe_${VAR_RECIPE_STRING}_control_table"
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VAR_RECIPE_TABLE="${!recipe_table_var}"
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if [[ "${VAR_RECIPE_TABLE,,}" == "gpt" && "${VAR_RECIPE_FIRMWARE,,}" == "uefi" ]]; then
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do_log "info" "file_only" "1251() Partition table: '${VAR_RECIPE_TABLE}' and firmware: '${VAR_RECIPE_FIRMWARE}' > ESP 'EF00' necessary."
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elif [[ "${VAR_RECIPE_TABLE,,}" == "gpt" && "${VAR_RECIPE_FIRMWARE,,}" == "bios" ]]; then
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do_log "info" "file_only" "1251() Partition table: '${VAR_RECIPE_TABLE}' and firmware: '${VAR_RECIPE_FIRMWARE}' > BIOS Boot Partition 'EF02' necessary."
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elif [[ "${VAR_RECIPE_TABLE,,}" == "msdos" && "${VAR_RECIPE_FIRMWARE,,}" == "uefi" ]]; then
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do_log "info" "file_only" "1251() Partition table: '${VAR_RECIPE_TABLE}' and firmware: '${VAR_RECIPE_FIRMWARE}' > ESP on MBR needs partition type '0xEF'."
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elif [[ "${VAR_RECIPE_TABLE,,}" == "msdos" && "${VAR_RECIPE_FIRMWARE,,}" == "bios" ]]; then
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do_log "info" "file_only" "1251() Partition table: '${VAR_RECIPE_TABLE}' and firmware: '${VAR_RECIPE_FIRMWARE}' > No special firmware partition necessary."
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fi
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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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