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|
#! /bin/perl
##
## Read BGPd logfile and lookup RR's whois database.
##
## Copyright (c) 1997 Kunihiro Ishiguro
##
use Socket;
## Configuration variables
$whois_host = "whois.jpix.ad.jp";
#$logfile = "/usr/local/sbin/logfile"
$logfile = shift || die "Please specify filename";
## mail routine
{
local ($prefix, $origin);
open (LOG, $logfile) || die "can't open $logfile";
$index = '';
while ($index) {
$index = <LOG>;
if ($index =~ /[bgpd]/) {
break;
}
}
while (<LOG>) {
if (/([\d\.\/]+)\s+([\d\.]+)\s+(\d+)\s+(\d+)\s+([\d ]+)\s+[ie\?]/) {
$prefix = $1;
$nexthop = $2;
$med = $3;
$dummy = $4;
$aspath = $5;
($origin) = ($aspath =~ /([\d]+)$/);
print "$nexthop [$origin] $prefix $aspath ";
$ret = &whois_check ($prefix, $origin);
if ($ret == 0) {
print "Check OK\n";
} elsif ($ret == 1){
print "AS orgin mismatch\n";
} else {
print "prefix doesn't exist \n";
}
}
}
}
sub whois_check
{
local ($prefix, $origin) = @_;
local ($rr_prefix, $rr_origin) = ();
local (@result);
$origin = "AS" . $origin;
@result = &whois ($prefix);
$prefix_match = 0;
foreach (@result) {
if (/^route:.*\s([\d\.\/]+)$/) {
$rr_prefix = $1;
}
if (/^origin:.*\s(AS[\d]+)$/) {
$rr_origin = $1;
if ($prefix eq $rr_prefix and $origin eq $rr_origin) {
return 0;
} elsif ($prefix eq $rr_prefix) {
$prefix_match = 1;
}
}
}
# alarm_mail ($prefix, $origin, @result);
if ($prefix_match) {
return 1;
} else {
return 2;
}
}
## get port of whois
sub get_whois_port
{
local ($name, $aliases, $port, $proto) = getservbyname ("whois", "tcp");
return ($port, $proto);
}
## whois lookup
sub whois
{
local ($query) = @_;
local ($port, $proto) = &get_whois_port;
local (@result);
if ($whois_host=~ /^\s*\d+\.\d+\.\d+\.\d+\s*$/) {
$address = pack ("C4",split(/\./,$host));
} else {
$address = (gethostbyname ($whois_host))[4];
}
socket (SOCKET, PF_INET, SOCK_STREAM, $proto);
if (connect (SOCKET, sockaddr_in ($port, $address))) {
local ($oldhandle) = select (SOCKET);
$| = 1;
select($oldhandle);
print SOCKET "$query\r\n";
@result = <SOCKET>;
return @result;
}
}
##
sub alarm_mail
{
local ($prefix, $origin, @result) = @_;
open (MAIL, "|$mailer -t $mail_address") || die "can't open $mailer";
print MAIL "From: root\@rr1.jpix.ad.jp\n";
print MAIL "Subject: RR $origin $prefix\n";
print MAIL "MIME-Version: 1.0\n";
print MAIL "Content-Type: text/plain; charset=us-ascii \n\n";
print MAIL "RR Lookup Error Report\n";
print MAIL "======================\n";
print MAIL "Announced route : $prefix from $origin\n\n";
print MAIL "@result";
close MAIL;
}
|
