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# Copyright (C) 2003 Corporation of Balclutha. All rights reserved.
#
# Visit us at http://www.balclutha.org for all of your open source
# software development and support requirements and hosted solutions.
#
# 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; either version 2 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
package Mail::SpamAssassin::AuthCourier;
$VERSION=1.0.1;
#
# A mechanism which uses the Courier MTA's authdaemond server to
# determine mail account information. Courier is found at http://courier-mta.org
#
# This module automagically overrides the builtin getpwnam and getpwuid
# functions.
#
use Exporter;
use IO::Socket::UNIX;
@ISA = qw(Exporter);
@EXPORT = qw( getpwnam getpwuid );
#
# ensure overriding for our own internal usage as well ...
#
use subs qw( getpwnam getpwuid );
#
# For some frustrating reason, the socket seems to be unusable unless set each time.
# Please contact us if you have the solution to this enhancement.
#
BEGIN {
# $socket = IO::Socket::UNIX->new('/usr/lib/courier/var/authdaemon/socket');
}
END {
$socket->close if $socket;
}
sub getpwnam {
my $name = shift;
my $socket = IO::Socket::UNIX->new('/usr/lib/courier/var/authdaemon/socket');
$socket = IO::Socket::UNIX->new('/var/run/courier/authdaemon/socket') unless $socket;
$socket = IO::Socket::UNIX->new('/run/authdaemon/socket') unless $socket;
die "authdaemond socket error: $!\n" unless $socket;
print $socket "PRE . login $name\n";
my %results = ();
my ($k, $v);
while (<$socket>) {
($k,$v) = split '=', $_, 2;
chomp $v if $v;
$results{$k} = $v;
}
$socket->close if $socket;
# some auth mechanisms don't return UID - these must be fetched from /etc/passwd or
# it's moral equivalent until Sam patches these as per my request...
my $uid = $results{'UID'} || CORE::getpwnam($name);
# stop some naf 'uninitialized' errors ...
return wantarray ? ('','','','','','','') : undef unless $uid; # uid 0 = root !!!
return wantarray ? ( $results{'USERNAME'},
$results{'PASSWD'},
int($uid),
int($results{'GID'}),
$results{'QUOTA'},
$results{'COMMENT'},
$results{'GCOS'},
$results{'HOME'},
'/bin/bash') : $uid;
}
sub getpwuid {
return (getpwnam($_[0]))[2];
}
1;
__END__
=head1 SYNOPSIS
use Mail::SpamAssassin::AuthCourier;
=head1 DESCRIPTION
Overrides the builtin functions getpwnam, and getpwuid to return
information as per the Courier Mail (http://courier-mta.org)
authdaemond process rather than from the /etc/passwd file (or it's
moral equivalent).
All of the magick happens courtesy of the Exporter module. If you
need the old functions, these are still available via the CORE module.
=head1 INSTALLATION
Copy this file into the Mail/SpamAssassin directory on your @INC path
and edit spamd as per the SYNOPSIS.
=head1 AUTHOR
Alan Milligan <alan\x40balclutha.org> ("\x40" is "@" of course)
=cut
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