### -*-sh-*-
###
### Stash a recovery blob of a secret
###
### (c) 2011 Mark Wooding
###

###----- Licensing notice ---------------------------------------------------
###
### This file is part of the distorted.org.uk key management suite.
###
### distorted-keys 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 2 of the License, or
### (at your option) any later version.
###
### distorted-keys 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 distorted-keys; if not, write to the Free Software Foundation,
### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

set -e
case "${KEYSLIB+t}" in t) ;; *) echo >&2 "$0: KEYSLIB unset"; exit 1 ;; esac
. "$KEYSLIB"/keyfunc.sh

defhelp <<HELP
RECOV LABEL [SECRET]
Store a secret encrypted under the recovery key RECOV.

The LABEL is used to identify the encrypted secret later to the \`recover'
command.  The secret is read from SECRET, or stdin if SECRET is omitted or
\`-'.
HELP
dohelp

## Parse the command line.
case $# in
  2) if [ -t 0 ]; then echo >&2 "$quis: stdin is a terminal"; exit 1; fi ;;
  3) ;;
  *) echo >&2 "$usage"; exit 1 ;;
esac
recov=$1 label=$2; shift 2
checkword "recovery key label" "$recov"
checklabel "secret" "$label"

## Do the thing.
tmp=$(mktmp); cleanup rmtmp
cat -- "$@" >$tmp/secret
cd $KEYS/recov/$recov/current
case $label in */*) mkdir -m755 -p ${label%/*} ;; esac
ec_encrypt pub -i$tmp/secret -o$label.new
mv $label.new $label.recov

###----- That's all, folks --------------------------------------------------