FreedomBox/actions/xmpp-hostname-change

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#!/bin/bash
#
# This file is part of Plinth.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Action to set up new hostname for ejabberd and jwchat.
hostname="$1"
old_hostname=`debconf-show ejabberd | awk '/hostname/ { print $3 }'`
# Based on http://www.process-one.net/docs/ejabberd/guide_en.html#htoc77
BACKUP=/tmp/ejabberd.dump
# Note: dpkg-reconfigure will fail if there have been manual changes made to the
# configuration file for a package. Since this is the case for ejabberd,
# manually update the hostname in the configuration file.
echo "ejabberd ejabberd/hostname string $hostname" | debconf-set-selections
echo "jwchat jwchat/ApacheServerName string $hostname" | debconf-set-selections
DEBIAN_FRONTEND=noninteractive dpkg-reconfigure jwchat
sed -i "s/$old_hostname/$hostname/g" /etc/ejabberd/ejabberd.yml
sed -i "s/$old_hostname/$hostname/g" $BACKUP
service ejabberd restart
# Load backup database
sleep 10
ejabberdctl load $BACKUP
rm $BACKUP