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#!/usr/bin/perl
# script to downgrade from cyrus imapd 1.6.2+ to earlier.
# do NOT run this script while imapd's are running
#
# Copyright (c) 1994-2008 Carnegie Mellon University. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# 3. The name "Carnegie Mellon University" must not be used to
# endorse or promote products derived from this software without
# prior written permission. For permission or any legal
# details, please contact
# Carnegie Mellon University
# Center for Technology Transfer and Enterprise Creation
# 4615 Forbes Avenue
# Suite 302
# Pittsburgh, PA 15213
# (412) 268-7393, fax: (412) 268-7395
# innovation@andrew.cmu.edu
#
# 4. Redistributions of any form whatsoever must retain the following
# acknowledgment:
# "This product includes software developed by Computing Services
# at Carnegie Mellon University (http://www.cmu.edu/computing/)."
#
# CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
# THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
# AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
# FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
# AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
# OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
# $Id: undohash,v 1.11 2010/01/06 17:02:02 murch Exp $
require 5;
$| = 1;
sub read_conf {
my $file = shift;
open CONF, $file or die "can't open $file";
while (<CONF>) {
if (/^#/) {
next;
}
if (/\@include:\s+(.*)$/) {
push @configs, $1;
}
if (/^configdirectory:\s+(.*)$/) {
$confdir = $1;
}
if (/^(?:meta)?partition-.*:\s+(.*)$/) {
if (grep /$1/, @parts) {
next;
}
push @parts, $1;
}
if (/^hashimapspool:\s*(1|t|yes|on)/) {
$hashispool = 1;
print "i will also hash partitions.\n";
}
}
close CONF;
}
$imapdconf = shift || "/etc/imapd.conf";
$hashispool = 0;
push @configs, $imapdconf;
while ($conf = shift @configs) {
read_conf($conf);
}
print "downgrading configuration directory $confdir...";
chdir $confdir or die "couldn't change to $confdir";
# *** user subdirectory; holds subscription files
print "user ";
chdir "user" or die "couldn't change to user subdir";
foreach $i ("a".."z") {
opendir SUB, $i;
while ($s = readdir SUB) {
if ($s =~ /^\./s) { next; }
rename("$i/$s", "$s") or die "couldn't move $s back!";
}
closedir SUB;
rmdir "$i" or die "couldn't remove $i";
}
chdir "..";
# *** quota subdirectory; holds quota files for each quotaroot
print "quota ";
chdir "quota" or die "couldn't change to quota subdir";
# first, create directories we know can't conflict with existing files
foreach $i ("a".."z") {
rename ($i, ".$i") or die "couldn't rename $i to .$i";
opendir SUB, ".$i";
while ($s = readdir SUB) {
if ($s =~ /^\./s) { next; }
rename(".$i/$s", $s) or die "couldn't move $s back!";
}
closedir SUB;
rmdir ".$i" or die "couldn't remove .$i";
}
chdir "..";
print "done\n";
# *** now for each data partition
while ($hashispool && ($part = shift @parts)) {
print "downgrading data partition $part...";
chdir $part or die "couldn't chdir to $part";
foreach $i ("a".."z") {
rename ("$i", ".$i") or die "couldn't rename $i to .$i";
}
# process each subdir
foreach $i ("a".."z") {
print "$i ";
opendir SUB, ".$i";
while ($s = readdir SUB) {
if ($s =~ /^\./s) { next; }
mkdir $s, 0755; # ignore errors as it might already exist
opendir MV, ".$i/$s";
while ($t = readdir MV) {
if ($t =~ /^\./s) { next; }
rename (".$i/$s/$t", "$s/$t") or
die "couldn't rename .$i/$s/$t to $s/$t";
}
closedir MV;
}
closedir SUB;
rmdir ".$i";
}
print "done\n";
}