86 lines
2.9 KiB
Bash
86 lines
2.9 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.hardened.installer 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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#######################################
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# Argument Check Wrapper
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# Arguments:
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# $1: "$@" of ./ciss_live_builder.sh
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#######################################
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arg_check() {
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declare a
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declare sanitized_args=()
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for a in "$@"; do
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sanitized_args+=( "$(sanitize_arg "${a}")" )
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done
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set -- "${sanitized_args[@]}"
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}
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#######################################
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# Function to sanitize a single argument
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# Globals:
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# ERROR_LOG
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# ERR_INVLD_CHAR
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# Arguments:
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# $1: Argument to check
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#######################################
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sanitize_arg() {
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declare input="$1"
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# Define allowed characters:
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# letters, digits, dot, underscore, slash, equals, [, ], colon, double-quote, hyphen, space.
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declare allowed='a-zA-Z0-9._/=\[\]:"\- '
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declare disallowed
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disallowed=$(printf '%s' "${input}" | tr -d "${allowed}")
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if [[ -n ${disallowed} ]]; then
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{
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printf "❌ Invalid character : '%s'. \n" "${disallowed//?/& }"
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printf "❌ in argument : '%s'. \n" "${input}"
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printf "❌ Allowed Characters : 'a-z A-Z 0-9 . _ / = [ ] : \" - ' \n"
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printf "\n"
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} >> "${ERROR_LOG}"
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boot_screen_cleaner
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printf "\e[91m❌ Invalid character : '%s'. \e[0m\n" "${disallowed//?/& }" >&2
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printf "\e[91m❌ in argument : '%s'. \e[0m\n" "${input}" >&2
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printf "\e[91m❌ Allowed Characters : 'a-z A-Z 0-9 . _ / = [ ] : \" - ' \e[0m\n" >&2
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# shellcheck disable=SC2162
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read -p $'\e[92m✅ Press \'ENTER\' to exit the script ... \e[0m'
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exit "${ERR_INVLD_CHAR}"
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else
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printf '%s' "${input}"
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fi
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}
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#######################################
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# Function to remove any character not in the allowed set
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# Arguments:
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# $1: String to Sanitize
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#######################################
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sanitize_string() {
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declare input="$1"
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# Define allowed characters:
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# letters, digits, dot, underscore, slash, equals, [, ], colon, double-quote, hyphen, space.
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declare allowed='a-zA-Z0-9._/=\[\]:"\- '
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printf '%s' "${input}" | tr -cd "${allowed}"
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}
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#######################################
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# Function to escape all shell metacharacters
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# Arguments:
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# $1: String to Sanitize
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#######################################
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sanitize_shell_literal() {
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declare input="$1"
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# %q quotes the string so that the shell re-reads it as the original literal
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printf '%q' "${input}"
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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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