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#!/bin/bash
# Data at rest encryption for NextCloudPi
#
# Copyleft 2021 by Ignacio Nunez Hernanz <nacho _a_t_ ownyourbits _d_o_t_ com>
# GPL licensed (see end of file) * Use at your own risk!
#
# More at: nextcloudpi.com
#
is_active()
{
mount | grep ncdata_enc | grep -q gocryptfs
}
install()
{
apt_install gocryptfs
}
configure()
{
(
set -eu -o pipefail
local datadir parentdir encdir tmpdir
datadir="$(get_ncpcfg datadir)"
[[ "${datadir}" == "null" ]] && datadir=/var/www/nextcloud/data
parentdir="$(dirname "${datadir}")"
encdir="${parentdir}/ncdata_enc"
tmpdir="$(mktemp -u -p "${parentdir}" -t nc-data-crypt.XXXXXX))"
[[ "${ACTIVE}" != "yes" ]] && {
if ! is_active; then
echo "Data not currently encrypted"
return 0
fi
save_maintenance_mode
trap restore_maintenance_mode EXIT
echo "Decrypting data..."
mkdir "${tmpdir}"
chown www-data: "${tmpdir}"
pkill tail # prevents from umounting in docker
mv "${datadir}"/* "${datadir}"/.[!.]* "${tmpdir}"
fusermount -u "${datadir}"
rmdir "${datadir}"
mv "${tmpdir}" "${datadir}"
rm "${encdir}"/gocryptfs.*
rmdir "${encdir}"
echo "Data no longer encrypted"
return
}
if is_active; then
echo "Encrypted data already in use"
return
fi
# Just mount already encrypted data
if [[ -f "${encdir}"/gocryptfs.conf ]]; then
echo "${PASSWORD}" | gocryptfs -allow_other -q "${encdir}" "${datadir}" 2>&1 | sed /^Switch/d
# switch to the regular virtual hosts after we decrypt, so we can access NC and ncp-web
a2ensite ncp nextcloud
a2dissite ncp-activation
apache2ctl -k graceful
echo "Encrypted data now accessible"
return
fi
mkdir -p "${encdir}"
echo "${PASSWORD}" | gocryptfs -init -q "${encdir}"
save_maintenance_mode
trap restore_maintenance_mode EXIT
mv "${datadir}" "${tmpdir}"
mkdir "${datadir}"
echo "${PASSWORD}" | gocryptfs -allow_other -q "${encdir}" "${datadir}" 2>&1 | sed /^Switch/d
echo "Encrypting data..."
mv "${tmpdir}"/* "${tmpdir}"/.[!.]* "${datadir}"
chown -R www-data: "${datadir}"
rmdir "${tmpdir}"
set_ncpcfg datadir "${datadir}"
echo "Data is now encrypted"
)
}
# License
#
# This script 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.
#
# This script 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 script; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
# Boston, MA 02111-1307 USA
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