Marc S. Weidner
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Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
76 lines
2.4 KiB
Bash
76 lines
2.4 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
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#######################################
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# Debugger module for xtrace to debug log.
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# Globals:
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# BASH_XTRACEFD
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# LOG_DEBUG
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# LOG_VAR
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# PS4
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# SHELLOPTS
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# VAR_DUMP_VARS_INITIAL
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# VAR_EARLY_DEBUG
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# VAR_ISO8601
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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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debugger() {
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### Capture an initial snapshot of all variables (excluding '^(BASH|_).*')
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# shellcheck disable=SC2155
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declare -grx VAR_DUMP_VARS_INITIAL=$(mktemp)
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# shellcheck disable=SC2312
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{
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declare var
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while IFS= read -r var; do
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declare -p "${var}" 2>/dev/null
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done < <(compgen -v | grep -Ev '^(BASH|_).*')
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} | sort >| "${VAR_DUMP_VARS_INITIAL}"
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declare -gx VAR_EARLY_DEBUG="true"
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### Set a verbose PS4 prompt including timestamp, source, line, exit status, and function name
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declare -grx PS4='\e[97m+\e[96m[${EPOCHREALTIME}]\e[97m:\e[94m[$$]\e[97m:\e[92m[${BASH_SOURCE[0]}:${LINENO}]\e[97m:\e[93m[${?}]\e[97m:\e[95m[${FUNCNAME[0]:-main}()]\e[97m>>\e[0m '
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declare -grx LOG_DEBUG="/tmp/cdlb_${VAR_ISO8601}_debug.log"
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declare -grx LOG_VAR="/tmp/cdlb_${VAR_ISO8601}_var.log"
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### Generates empty LOG_DEBUG and LOG_VAR
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touch "${LOG_DEBUG}" && chmod 0600 "${LOG_DEBUG}"
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touch "${LOG_VAR}" && chmod 0600 "${LOG_VAR}"
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### Open file descriptor 42 for writing to the debug log
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exec 42>| "${LOG_DEBUG}"
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### Write Debug Log Header https://www.gnu.org/software/bash/manual/html_node/Bash-Variables
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debug_header "$#" "$*"
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### Tell Bash to send xtrace output to FD 42
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export BASH_XTRACEFD=42
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### Enable inheritable shell options
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export SHELLOPTS
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### Turn on xtrace
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set -x
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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 debugger
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# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh
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