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#!/usr/bin/perl
#
# This Perl script reads mail logs and submits to a BLD daemon anything
# that looks like a "user unknown" Postfix log line
#
# Olivier Beyssac <obld@r14.freenix.org>
#
# Contributors:
# Tim Bynum <tjbynum@timsplace.org>
#
use IO::Socket;
use strict;
my $bld_host = "localhost";
my $bld_port = "2905";
sub bld_submit($$$$)
{
my ($host, $port, $ip, $debug) = @_;
my $sd = IO::Socket::INET->new(PeerHost => $host, PeerPort => $port)
|| return undef;
my $buf;
return if (sysread($sd, $buf, 1024) <= 0);
print "BLD: $buf" if ($debug);
syswrite($sd, "ip=$ip\r\n");
print "YOU: ip=$ip\r\n" if ($debug);
return if (sysread($sd, $buf, 1024) <= 0);
print "BLD: $buf" if ($debug);
close($sd);
}
my $debug;
if ($#ARGV == 0 && $ARGV[0] eq "-d") {
$debug = 1;
}
while (<STDIN>) {
if (/postfix\/smtp[^:]+:[^:]+: reject: RCPT from [^\[]+\[([^\]]+)\]: .* User unknown/) {
bld_submit($bld_host, $bld_port, $1, $debug);
}
}