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- #!/bin/bash -e
- # vim: set ts=8 shiftwidth=4 softtabstop=4 expandtab smarttab colorcolumn=80:
- #
- # Copyright (c) 2019 Red Hat, Inc.
- # Author: Sergio Correia <scorreia@redhat.com>
- #
- # This program is free software: you can redistribute it and/or modify
- # it under the terms of the GNU General Public License as published by
- # the Free Software Foundation, either version 3 of the License, or
- # (at your option) any later version.
- #
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License
- # along with this program. If not, see <http://www.gnu.org/licenses/>.
- #
- . clevis-luks-common-functions
- SUMMARY="Returns the LUKS passphrase used for binding a particular slot."
- usage() {
- exec >&2
- echo "Usage: clevis luks pass -d DEV -s SLT"
- echo
- echo "$SUMMARY"
- echo
- echo " -d DEV The LUKS device to extract the LUKS passphrase used for binding"
- echo
- echo " -s SLOT The slot number to extract the LUKS passphrase"
- echo
- exit 1
- }
- if [ ${#} -eq 1 ] && [ "${1}" = "--summary" ]; then
- echo "${SUMMARY}"
- exit 0
- fi
- while getopts ":d:s:" o; do
- case "$o" in
- d) DEV=${OPTARG};;
- s) SLT=${OPTARG};;
- *) usage;;
- esac
- done
- if [ -z "${DEV}" ]; then
- echo "Did not specify a device!" >&2
- usage
- fi
- if [ -z "${SLT}" ]; then
- echo "Did not specify a slot!" >&2
- usage
- fi
- if ! clevis_luks_unlock_device_by_slot "${DEV}" "${SLT}"; then
- echo "It was not possible to decrypt the passphrase associated to slot ${SLT} in ${DEV}!" >&2
- exit 1
- fi
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