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#!/usr/bin/perl -w
# Copyright (c) 1999-2001 Gregory Neil Shapiro. 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. Neither the name of the author nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
# $Id: buildvirtuser,v 1.3 2001/02/12 02:58:20 gshapiro Exp $
=head1 NAME
buildvirtuser - Build virtusertable support from a directory of files
=head1 SYNOPSIS
buildvirtuser
=head1 DESCRIPTION
buildvirtuser will build /etc/mail/virtusertable.db and /etc/mail/virthosts
based on the contents of the directory /etc/mail/virtusers/. That
directory should contain one file per virtual domain with the filename
matching the virtual domain name and the contents containing a list of
usernames on the left and the actual address for that username on the
right. An empty left column translates to the default for that domain.
Blank lines and lines beginning with '#' are ignored. Occurrences of
$DOMAIN in the file are replaced by the current domain being processed.
Occurrences of $LHS in the right hand side are replaced by the address on
the left hand side.
=head1 CONFIGURATION
In order to function properly, sendmail must be configured to use these
files with:
FEATURE(`virtusertable')dnl
VIRTUSER_DOMAIN_FILE(`/etc/mail/virthosts')dnl
If a new domain is added (i.e., by adding a new file to
/etc/mail/virtusers/), the sendmail daemon must be restarted for the change
to take affect.
=head1 EXAMPLES
Here are some example files from the /etc/mail/virtusers/ directory:
=head2 /etc/mail/virtusers/bsdunix.org:
# Services
MAILER-DAEMON gshapiro+bounce.$DOMAIN@gshapiro.net
postmaster gshapiro+$LHS.$DOMAIN@gshapiro.net
webmaster gshapiro+$LHS.$DOMAIN@gshapiro.net
# Defaults
error:nouser No such user
# Users
gshapiro gshapiro+$DOMAIN@gshapiro.net
bob robert@smtp.org
=head2 /etc/mail/virtusers/smtp.org:
# Defaults
gshapiro+$DOMAIN@gshapiro.net
# Users
john john@wookie.org
nancy n@milter.com
=head1 AUTHOR
Gregory Neil Shapiro E<lt>F<gshapiro@gshapiro.net>E<gt>
=cut
use strict;
my $makemap = "/usr/sbin/makemap";
my $dbtype = "hash";
my $maildir = "/etc/mail";
my $virthosts = "$maildir/virthosts";
my $newvirthosts = "$maildir/virthosts.new";
my $virts = "$maildir/virtusers";
my $newvirt = "$maildir/virtusertable.new.db";
my $virt = "$maildir/virtusertable.db";
my %virt = ();
my $newest = 0;
my ($lhs, $domain, $key, $value);
opendir(VIRTS, $virts) || die "Could not open directory $virts: $!\n";
my @virts = grep { -f "$virts/$_" } readdir(VIRTS);
closedir(VIRTS) || die "Could not close directory $virts: $!\n";
foreach $domain (@virts)
{
open(DOMAIN, "$virts/$domain") || die "Could not open file $virts/$domain: $!\n";
my $line = 0;
my $mtime = (stat(DOMAIN))[9] || 0;
if ($mtime > $newest)
{
$newest = $mtime;
}
LINE: while (<DOMAIN>)
{
chomp;
$line++;
next LINE if /^#/;
next LINE if /^$/;
if (m/^([^\t ]*)[\t ]+(.*)$/)
{
if (defined($1))
{
$lhs = "$1";
$key = "$1\@$domain";
}
else
{
$lhs = "";
$key = "\@$domain";
}
$value = $2;
}
else
{
die "Bogus line $line in $virts/$domain\n";
}
# Variable subsitution
$key =~ s/\$DOMAIN/$domain/g;
$value =~ s/\$DOMAIN/$domain/g;
$value =~ s/\$LHS/$lhs/g;
$virt{$key} = $value;
}
close(DOMAIN) || die "Could not close $virts/$domain: $!\n";
}
my $virtmtime = (stat($virt))[9] || 0;
if ($virtmtime < $newest)
{
print STDOUT "Rebuilding $virt\n";
# logger -s -t ${prog} -p mail.info "Rebuilding ${basedir}/virtusertable"
open(MAKEMAP, "|$makemap $dbtype $newvirt") || die "Could not start makemap: $!\n";
foreach $key (keys %virt)
{
print MAKEMAP "$key\t\t$virt{$key}\n";
}
close(MAKEMAP) || die "Could not close makemap ($?): $!\n";
rename($newvirt, $virt) || die "Could not rename $newvirt to $virt: $!\n";
open(VIRTHOST, ">$newvirthosts") || die "Could not open file $newvirthosts: $!\n";
foreach $domain (sort @virts)
{
print VIRTHOST "$domain\n";
}
close(VIRTHOST) || die "Could not close $newvirthosts: $!\n";
rename($newvirthosts, $virthosts) || die "Could not rename $newvirthosts to $virthosts: $!\n";
}
exit 0;
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