tools/rrcheck.pl

   1 #!/usr/bin/env perl
   2 ##
   3 ## Read BGPd logfile and lookup RR's whois database.
   4 ##
   5 ##   Copyright (c) 1997 Kunihiro Ishiguro
   6 ##
   7 use Socket;
   8
   9 ## Configuration variables
  10 $whois_host = "whois.jpix.ad.jp";
  11
  12 #$logfile = "/usr/local/sbin/logfile"
  13 $logfile = shift || die "Please specify filename";
  14
  15 ## mail routine
  16 {
  17     local ($prefix, $origin);
  18
  19     open (LOG, $logfile) || die "can't open $logfile";
  20
  21     $index = '';
  22     while ($index) {
  23         $index = <LOG>;
  24         if ($index =~ /[bgpd]/) {
  25             break;
  26         }
  27     }
  28
  29     while (<LOG>) {
  30         if (/([\d\.\/]+)\s+([\d\.]+)\s+(\d+)\s+(\d+)\s+([\d ]+)\s+[ie\?]/) {
  31             $prefix = $1;
  32             $nexthop = $2;
  33             $med = $3;
  34             $dummy = $4;
  35             $aspath = $5;
  36             ($origin) = ($aspath =~ /([\d]+)$/);
  37
  38             print "$nexthop [$origin] $prefix $aspath ";
  39
  40             $ret = &whois_check ($prefix, $origin);
  41             if ($ret == 0) {
  42                 print "Check OK\n";
  43             } elsif ($ret == 1){
  44                 print "AS orgin mismatch\n";
  45             } else {
  46                 print "prefix doesn't exist \n";
  47             }
  48         }
  49     }
  50 }
  51
  52 sub whois_check
  53 {
  54     local ($prefix, $origin) = @_;
  55     local ($rr_prefix, $rr_origin) = ();
  56     local (@result);
  57
  58     $origin = "AS" . $origin;
  59
  60     @result = &whois ($prefix);
  61
  62     $prefix_match = 0;
  63     foreach (@result) {
  64         if (/^route:.*\s([\d\.\/]+)$/) {
  65             $rr_prefix = $1;
  66         }
  67         if (/^origin:.*\s(AS[\d]+)$/) {
  68             $rr_origin = $1;
  69
  70             if ($prefix eq $rr_prefix and $origin eq $rr_origin) {
  71                 return 0;
  72             } elsif ($prefix eq $rr_prefix) {
  73                 $prefix_match = 1;
  74             }
  75         }
  76     }
  77 #    alarm_mail ($prefix, $origin, @result);
  78     if ($prefix_match) {
  79         return 1;
  80     } else {
  81         return 2;
  82     }
  83 }
  84
  85 ## get port of whois
  86 sub get_whois_port
  87 {
  88     local ($name, $aliases, $port, $proto) = getservbyname ("whois", "tcp");
  89     return ($port, $proto);
  90 }
  91
  92 ## whois lookup
  93 sub whois
  94 {
  95     local ($query) = @_;
  96     local ($port, $proto) = &get_whois_port;
  97     local (@result);
  98
  99     if ($whois_host=~ /^\s*\d+\.\d+\.\d+\.\d+\s*$/) {
 100        $address = pack ("C4",split(/\./,$host));
 101     } else {
 102        $address = (gethostbyname ($whois_host))[4];
 103     }
 104
 105     socket (SOCKET, PF_INET, SOCK_STREAM, $proto);
 106
 107     if (connect (SOCKET, sockaddr_in ($port, $address))) {
 108         local ($oldhandle) = select (SOCKET);
 109         $| = 1;
 110         select($oldhandle);
 111
 112         print SOCKET "$query\r\n";
 113
 114         @result = <SOCKET>;
 115         return @result;
 116     }
 117 }
 118
 119 ##
 120 sub alarm_mail
 121 {
 122     local ($prefix, $origin, @result) = @_;
 123
 124     open (MAIL, "|$mailer -t $mail_address") || die "can't open $mailer";
 125
 126     print MAIL "From: root\@rr1.jpix.ad.jp\n";
 127     print MAIL "Subject: RR $origin $prefix\n";
 128     print MAIL "MIME-Version: 1.0\n";
 129     print MAIL "Content-Type: text/plain; charset=us-ascii \n\n";
 130     print MAIL "RR Lookup Error Report\n";
 131     print MAIL "======================\n";
 132     print MAIL "Announced route : $prefix from $origin\n\n";
 133     print MAIL "@result";
 134     close MAIL;
 135 }