#!/usr/bin/sh
#
# This file is run on a daily basis to perform a backup of your
# mailbox list which can be used to recreate mailboxes.db from backup.
# Restore is done using ctl_mboxlist after uncompressing the file.

ROTATE=6

configdirectory=`awk '/^[[:space:]]*configdirectory:/ {print $NF}' /etc/imapd.conf`
backdir="${configdirectory}/backup"
mboxlist="${backdir}/mboxlist"

[ -x /usr/lib/cyrus-imapd/ctl_mboxlist ] || exit 0
[ -s ${configdirectory}/mailboxes.db ] || exit 0

[ -d ${backdir} ] || mkdir -p ${backdir}

# rotate mailbox lists
while [ ${ROTATE:-0} -gt 1 ]; do
	_prev=$(( $ROTATE -1 ))
	[ -f ${mboxlist}.${_prev}.gz ] && mv -f ${mboxlist}.${_prev}.gz ${mboxlist}.${ROTATE}.gz
	ROTATE=${_prev}
done
[ ${ROTATE:-0} -gt 0 -a -f ${mboxlist}.gz  ] && mv -f ${mboxlist}.gz ${mboxlist}.1.gz

# export mailboxes.db
su - cyrus -c "umask 077 ; /usr/lib/cyrus-imapd/ctl_mboxlist -d | gzip > ${mboxlist}.gz"

exit 0
# EOF