qpsmtpd/plugins/check_norelay
John Peacock 8b50b6dd46 Two new plugins from Gordon Rowell <gordonr@gormand.com.au>
*   plugins/check_badrcptto_patterns
     Match bad RCPTO address with regex
 
 *   plugins/check_norelay
     Carve out holes from larger relay blocks


git-svn-id: https://svn.perl.org/qpsmtpd/trunk@431 958fd67b-6ff1-0310-b445-bb7760255be9
2005-06-09 16:36:43 +00:00

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=pod
=head1 SYNOPSIS
This plugin checks the norelayclients config file to see if
relaying is denied.
This allows specific clients, such as the gateway, to be denied
relaying, even though they would be allowed relaying by the
relayclients file.
=head1 CONFIG
config/norelayclients
Each line is:
- a full IP address
- partial IP address terminated by a dot for matching whole networks
e.g. 192.168.42.
=head1 BUGS AND LIMITATIONS
This plugin does not have a more_norelayclients map equivalent
of the more_relayclients map of the check_relay plugin.
=head1 AUTHOR
Based on check_relay plugin from the qpsmtpd distribution.
Copyright 2005 Gordon Rowell <gordonr@gormand.com.au>
This software is free software and may be distributed under the same
terms as Perl itself.
=cut
sub register {
my ($self, $qp) = @_;
$self->register_hook("connect", "check_norelay");
}
sub check_norelay {
my ($self, $transaction) = @_;
my $connection = $self->qp->connection;
# Check if this IP is not allowed to relay
my @no_relay_clients = $self->qp->config("norelayclients");
my %no_relay_clients = map { $_ => 1 } @no_relay_clients;
my $client_ip = $self->qp->connection->remote_ip;
while ($client_ip) {
if ( exists($no_relay_clients{$client_ip}) )
{
$connection->relay_client(0);
delete $ENV{RELAYCLIENT};
$self->log(LOGNOTICE, "check_norelay: $client_ip denied relaying");
last;
}
$client_ip =~ s/\d+\.?$//; # strip off another 8 bits
}
return (DECLINED);
}