#!/bin/sh
# gpg-archive - gpg-ized tar using the same format as PGP's PGP Zip.
# Copyright (C) 2005 Free Software Foundation, Inc.
#
# This file is part of GnuPG.
#
# GnuPG 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.
#
# GnuPG 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/>.
# Despite the name, PGP Zip format is actually an OpenPGP-wrapped tar
# file. To be compatible with PGP itself, this must be a USTAR format
# tar file. Unclear on whether there is a distinction here between
# the GNU or POSIX variant of USTAR.
VERSION=2.0.22
TAR=/usr/bin/tar
GPG=gpg
usage="\
Usage: gpg-zip [--help] [--version] [--encrypt] [--decrypt] [--symmetric]
[--list-archive] [--output FILE] [--gpg GPG] [--gpg-args ARGS]
[--tar TAR] [--tar-args ARGS] filename1 [filename2, ...]
directory1 [directory2, ...]
Encrypt or sign files into an archive."
while test $# -gt 0 ; do
case $1 in
-h | --help | --h*)
echo "$usage"
exit 0
;;
--list-archive)
list=yes
create=no
unpack=no
shift
;;
--encrypt | -e)
gpg_args="$gpg_args --encrypt"
list=no
create=yes
unpack=no
shift
;;
--decrypt | -d)
gpg_args="$gpg_args --decrypt"
list=no
create=no
unpack=yes
shift
;;
--symmetric | -c)
gpg_args="$gpg_args --symmetric"
list=no
create=yes
unpack=no
shift
;;
--sign | -s)
gpg_args="$gpg_args --sign"
list=no
create=yes
unpack=no
shift
;;
--recipient | -r)
gpg_args="$gpg_args --recipient $2"
shift
shift
;;
--local-user | -u)
gpg_args="$gpg_args --local-user $2"
shift
shift
;;
--output | -o)
gpg_args="$gpg_args --output $2"
shift
shift
;;
--version)
echo "gpg-zip (GnuPG) $VERSION"
exit 0
;;
--gpg)
GPG=$1
shift
;;
--gpg-args)
gpg_args="$gpg_args $2"
shift
shift
;;
--tar)
TAR=$1
shift
;;
--tar-args)
tar_args="$tar_args $2"
shift
shift
;;
--)
shift
break
;;
-*)
echo "$usage" 1>&2
exit 1
;;
*)
break
;;
esac
done
if test x$create = xyes ; then
# echo "$TAR -cf - "$@" | $GPG --set-filename x.tar $gpg_args" 1>&2
$TAR -cf - "$@" | $GPG --set-filename x.tar $gpg_args
elif test x$list = xyes ; then
# echo "cat \"$1\" | $GPG $gpg_args | $TAR $tar_args -tf -" 1>&2
cat "$1" | $GPG $gpg_args | $TAR $tar_args -tf -
elif test x$unpack = xyes ; then
# echo "cat \"$1\" | $GPG $gpg_args | $TAR $tar_args -xvf -" 1>&2
cat "$1" | $GPG $gpg_args | $TAR $tar_args -xvf -
else
echo "$usage" 1>&2
exit 1
fi