#!/bin/sh
#
# Copyright (C) 2013  Codethink Limited
#
# 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; version 2 of the License.
#
# 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
#
# This is a "morph deploy" configuration extension to set up the Trove with a
# backup user that can be accessed with rsync.
# It takes one environment variable:
#
# TROVE_BACKUP_KEYS - a space-separated list of paths to SSH keys.

set -e

ROOT="$1"
BACKUP_HOME=/root/backup-user-home

##########################################################################

if [ -n "$TROVE_BACKUP_KEYS" ]; then
	cat >"$1/etc/rsyncd.conf" <<EOF
numeric ids = yes
uid = 0
gid = 0
read only = yes

[etc]
path = /etc
comment = System configuration

[home]
path = /home
comment = Home directories
EOF

	echo "backup:x:0:0::$BACKUP_HOME:/bin/sh" >>"$1/etc/passwd"
	mkdir -p "$1/$BACKUP_HOME/.ssh"

	touch "$1/$BACKUP_HOME/.ssh/authorized_keys"
	for key in $TROVE_BACKUP_KEYS; do
		cat "$key" >> "$1/$BACKUP_HOME/.ssh/authorized_keys"
	done
fi