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- #!/bin/bash -e
- # vim: set tabstop=8 shiftwidth=4 softtabstop=4 expandtab smarttab colorcolumn=80:
- #
- # Copyright (c) 2016 Red Hat, Inc.
- # Author: Nathaniel McCallum <npmccallum@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/>.
- #
- SUMMARY="Unlocks a LUKSv1 volume"
- UUID=cb6e8904-81ff-40da-a84a-07ab9ab5715e
- function usage() {
- echo >&2
- echo "Usage: clevis luks unlock -d DEV [-n NAME]" >&2
- echo >&2
- echo "$SUMMARY": >&2
- echo >&2
- echo " -d DEV The LUKS device on which to perform unlocking" >&2
- echo >&2
- echo " -n NAME The name of the unlocked device node" >&2
- echo >&2
- exit 1
- }
- if [ $# -eq 1 -a "$1" == "--summary" ]; then
- echo "$SUMMARY"
- exit 0
- fi
- while getopts ":d:n:" o; do
- case "$o" in
- d) DEV=$OPTARG;;
- n) NAME=$OPTARG;;
- *) usage;;
- esac
- done
- if [ -z "$DEV" ]; then
- echo "Did not specify a device!" >&2
- usage
- fi
- NAME=${NAME:-luks-`cryptsetup luksUUID $DEV`}
- luksmeta show -d "$DEV" | while read -r slot state uuid; do
- [ "$state" != "active" ] && continue
- [ "$uuid" != "$UUID" ] && continue
- if pt="`luksmeta load -d $DEV -s $slot -u $UUID | clevis decrypt`"; then
- echo -n "$pt" | cryptsetup open -d- "$DEV" "$NAME"
- exit 0
- fi
- done
- exit 1
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