Marc S. Weidner
051361abbb
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Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
54 lines
1.6 KiB
Bash
54 lines
1.6 KiB
Bash
#!/bin/bash
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# SPDX-Version: 3.0
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# SPDX-CreationInfo: 2025-05-05; WEIDNER, Marc S.; <msw@coresecret.dev>
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# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.live.builder.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.live.builder
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# SPDX-Security-Contact: security@coresecret.eu
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guard_sourcing || return "${ERR_GUARD_SRCE}"
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#######################################
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# Unbound variable check and call trap on 'ERR'.
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# Globals:
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# ERR_UNBOUNDVAR
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# Arguments:
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# 1: VAR_NAME to check
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# Returns:
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# 0: on success
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# ERR_UNBOUNDVAR: on failure
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#######################################
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check_var() {
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declare var_name_to_check="$1"
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if [[ -n "${!var_name_to_check+exists}" ]]; then
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if [[ -n "${!var_name_to_check}" ]]; then
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printf "\e[92m✅ Variable: '%s' exists and is NOT empty: '%s' \e[0m\n" "${var_name_to_check}" "${!var_name_to_check}"
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else
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printf "\e[92m✅ Variable: '%s' exists but is empty. \e[0m\n" "${var_name_to_check}"
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fi
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else
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printf "\e[91m❌ Variable: '%s' is not declared. Exiting Script. \e[0m\n" "${var_name_to_check}" >&2
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return "${ERR_UNBOUNDVAR}"
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fi
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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 check_var
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# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh
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