Marc S. Weidner
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Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
101 lines
3.9 KiB
Bash
101 lines
3.9 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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# Parsing './.preseed/preseed.yaml' and './.preseed/partitioning.yaml'.
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# Globals:
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# ARY_ALLOW_IPV4
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# ARY_ALLOW_IPV6
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# ARY_BOOTPARAM
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# ARY_LOCALE
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# ARY_NTPSRVR
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# ARY_PACKAGES
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# BASH_REMATCH
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# DIR_CNF
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# DIR_TMP
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# VAR_PRESEED
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# VAR_USER_MAX
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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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yaml_parser() {
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### Declare Arrays, HashMaps, and Variables.
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# shellcheck disable=SC2034
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declare -ag ARY_ALLOW_IPV4=() ARY_ALLOW_IPV6=() ARY_BOOTPARAM=() ARY_LOCALE=() ARY_NTPSRVR=() ARY_PACKAGES=()
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declare -gix VAR_USER_MAX=-1
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declare var_index="" var_key="" var_value="" _=""
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cat "${DIR_CNF}/preseed.yaml" "${DIR_CNF}/partitioning.yaml" >| "${DIR_TMP}/combined.yaml"
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yq -o=shell "${DIR_TMP}/combined.yaml" >| "${VAR_PRESEED}"
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### Generate Arrays for [Grub Parameter], [Locales], [NTPSec Server FQDN], [Software Packages].
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while IFS='=' read -r var_key var_value; do
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var_value=${var_value#\'}
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var_value=${var_value%\'}
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# shellcheck disable=SC2034,SC2249
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case "${var_key}" in
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grub_parameter_[0-9]*) ARY_BOOTPARAM+=("${var_value}") ;;
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locale_locale_[0-9]*) ARY_LOCALE+=("${var_value}") ;;
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ntp_server_[0-9]*) ARY_NTPSRVR+=("${var_value}") ;;
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ssh_allow_ipv4_[0-9]*) ARY_ALLOW_IPV4+=("${var_value}") ;;
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ssh_allow_ipv6_[0-9]*) ARY_ALLOW_IPV6+=("${var_value}") ;;
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software_[0-9]*) ARY_PACKAGES+=("${var_value}") ;;
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esac
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done < "${VAR_PRESEED}"
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var_key=""
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### Search all set variables for user_userN_name patterns.
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# shellcheck disable=SC2312
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while IFS='=' read -r var_key _; do
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### Accept any of these keys: name, fullname, uid, gid, shell, password, sshpubkey, authentication_* and privileges_*
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if [[ "${var_key}" =~ ^user_user([0-9]+)_(name|fullname|uid|gid|shell|password|sshpubkey|authentication_[A-Za-z0-9_]+|privileges_[A-Za-z0-9_]+)$ ]]; then
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var_index=${BASH_REMATCH[1]}
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(( var_index > VAR_USER_MAX )) && VAR_USER_MAX=var_index
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fi
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done < "${VAR_PRESEED}"
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### If nothing matched, default to 0 (only user 0).
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(( VAR_USER_MAX < 0 )) && VAR_USER_MAX=0
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do_log "info" "file_only" "1250() Found highest User #: '${VAR_USER_MAX}'."
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### Remove obsolete variables, normalize empty assignments, wrap remaining values in single quotes.
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sed -i -E '
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# --- Deletions --------------------------------------------------------
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/^grub_parameter_[0-9]+=/d # delete grub parameter variables
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/^locale_locale_[0-9]+=/d # delete locale variables
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/^ntp_server_[0-9]+=/d # delete NTP server variables
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/^ssh_allow_ipv4_[0-9]+=/d # delete ssh allow IPv4 variables
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/^ssh_allow_ipv6_[0-9]+=/d # delete ssh allow IPv6 variables
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/^software_[0-9]+=/d # delete software list variables
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# --- Empty-value normalisation ---------------------------------------
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s/^(.*)=\s*$/\1=""/ # turn key= into key=""
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# --- Quote unquoted values -------------------------------------------
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s/^(.*)=([^'\''"]+)/\1='\''\2'\''/ # wrap value in single quotes
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' "${VAR_PRESEED}"
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# shellcheck disable=SC1090
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. "${VAR_PRESEED}"
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guard_dir && return 0
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}
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### Prevents accidental 'unset -f'.
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# shellcheck disable=SC2034
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readonly -f yaml_parser
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# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh
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