From: Francois Fleuret Date: Wed, 23 Jul 2014 10:08:58 +0000 (+0200) Subject: Initial commit. X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=commitdiff_plain;h=71bcbb9518bc6512f6ff22c0aa8fc04b2e921a52;p=scripts.git Initial commit. --- diff --git a/rsync-luks.sh b/rsync-luks.sh new file mode 100755 index 0000000..87daf19 --- /dev/null +++ b/rsync-luks.sh @@ -0,0 +1,101 @@ +#!/bin/bash + +######################################################################### +# This program is free software: you can redistribute it and/or modify # +# it under the terms of the version 3 of the GNU General Public License # +# as published by the Free Software Foundation. # +# # +# 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 . # +# # +# Written by and Copyright (C) Francois Fleuret # +# Contact for comments & bug reports # +######################################################################### + +# This script takes two filenames as arguments, mounts them as luks +# volumes, and synchronizes their contents. + +# IT CHANGES THE CONTENT OF THE SECOND ARGUMENT + +set -e +set -o pipefail + +if [ "$1" == "-h" ] || [ "$1" == "--help" ]; then + cat < + +Mounts both files as LUKS volume and rsync the source to the dest. It +first performs a dry-run and then asks for interactive confirmation +before synchronizing for real. + +Comments and bug reports to francois@fleuret.org + +EOF + exit 0 +fi + +[ -f "$1" ] && [ -f "$2" ] || (echo "$0 " >&2 && exit 1) + +[ -e "/dev/mapper/crypt-src" ] && (echo "/dev/mapper/crypt-src already exists." >&2 && exit 1) + +[ -e "/dev/mapper/crypt-dst" ] && (echo "/dev/mapper/crypt-dst already exists." >&2 && exit 1) + +function exit_handler () { + + [ -n "${VOL_SRC+yes}" ] && umount "${VOL_SRC}" && rmdir "${VOL_SRC}" && unset VOL_SRC + [ -e "/dev/mapper/crypt-src" ] && cryptsetup luksClose crypt-src + [ -n "${LOOP_SRC+yes}" ] && losetup -d "${LOOP_SRC}" && unset LOOP_SRC + + [ -n "${VOL_DST+yes}" ] && umount "${VOL_DST}" && rmdir "${VOL_DST}" && unset VOL_DST + [ -e "/dev/mapper/crypt-dst" ] && cryptsetup luksClose crypt-dst + [ -n "${LOOP_DST+yes}" ] && losetup -d "${LOOP_DST}" && unset LOOP_DST + +} + +trap exit_handler EXIT SIGHUP SIGINT SIGQUIT SIGABRT SIGTERM + +###################################################################### +# Mount the volumes + +LOOP_SRC="$(losetup -f)" +losetup "${LOOP_SRC}" "$1" +cryptsetup luksOpen "${LOOP_SRC}" crypt-src +VOL_SRC="$(mktemp -d /tmp/sync-luks.XXXXXX)" +mount /dev/mapper/crypt-src "${VOL_SRC}" + +LOOP_DST="$(losetup -f)" +losetup "${LOOP_DST}" "$2" +cryptsetup luksOpen "${LOOP_DST}" crypt-dst +VOL_DST="$(mktemp -d /tmp/sync-luks.XXXXXX)" +mount /dev/mapper/crypt-dst "${VOL_DST}" + +###################################################################### +# First, show the changes + +echo "**********************************************************************" +echo "* Dry-run" + +rsync -n --itemize-changes --delete --progress -axz "${VOL_SRC}/" "${VOL_DST}/" + +###################################################################### +# Ask for confirmation and synchronize + +echo "**********************************************************************" +echo "* Synchronize [y]/N ?" + +read -n 1 KEY + +if [ "${KEY}" == "y" ]; then + rsync --itemize-changes --delete --progress -axz "${VOL_SRC}/" "${VOL_DST}/" +else + echo "No synchronization." +fi + +###################################################################### + +echo "**********************************************************************"