63 lines
1.7 KiB
Bash
Executable file
63 lines
1.7 KiB
Bash
Executable file
#!/usr/bin/env bash
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# shellcheck shell=bash
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# Copyright (C) 2022 Thorsten Schubert <tschubert@bafh.org>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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set -o nounset
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set -o pipefail
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set -o errexit
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shopt -s lastpipe
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[[ ${TRACE:-} ]] && set -o xtrace
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# shellcheck disable=SC1091
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source "$(dirname "${BASH_SOURCE[0]}")/bfrg"
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# shellcheck disable=SC2034
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LOG_FILE=${LOG_FILE:-${CACHE_BASE}/restore-${SCRIPT_EPOCH}.log}
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verify_repair() {
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local -r infile=${1}
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require_command par2 || return 0
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log 'attempting file verification'
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command par2 repair -- "$infile"
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}
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decrypt_stdout() {
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local -r infile=${1}
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local -r ts=${infile%%.*}
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mkdir -p "${ts}"
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trap 'rmdir --ignore-fail-on-non-empty ${ts}' ERR SIGINT
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log 'attempting file decryption and unpacking'
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command gpg --decrypt -- "${infile}" | command "${COMPRESSOR_CMD[0]}" -d -- | command tar -C "${ts}" -xv --
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}
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(($# < 1)) && die "no input file specified"
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readonly INFILE=${1}
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init_logger
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if ! verify_file_exists "${INFILE}"; then
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die "cannot read file ${INFILE}"
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fi
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ensure_commands gpg tar "${COMPRESSOR_CMD[0]}"
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verify_repair "${INFILE}"
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decrypt_stdout "${INFILE}"
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# vi: set ft=sh ts=4 sw=0 sts=-1 sr noet nosi tw=0 fdm=manual:
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