########################################################
# Please file all bug reports, patches, and feature
# requests under:
#      https://sourceforge.net/p/logwatch/_list/tickets
# Help requests and discusion can be filed under:
#      https://sourceforge.net/p/logwatch/discussion/
########################################################

##########################################################################
# Note (8/28/2005, BL):
#
# This script was apparently written for FreeS/WAN, which is no longer
# supported (see http://www.freeswan.org).  But it also appears to work
# with Openswan (http://www.openswan.org), which is described as a code
# fork of FreeS/WAN.
#
# Also, notice that in this script, many variables are set, but not
# printed.  And many logged statements are filtered by this script.
#
# So this script would probably benefit from an update to clean it up
# and ensure full compatibility with the newer Openswan.
##########################################################################

# This is a scanner for logwatch that processes FreeSWAN's
# <http://www.freeswan.org/> Pluto log files and attempts to
# make some sense out of them.
#
# Please CC suggestions to mcr@freeswan.org and/or design@lists.freeswan.org

# the vendorID hash maps vendor IDs to products. VendorIDs are hashs of
# internal stuff from each vendor. Grow this table as you encounter new
# products.

#######################################################
## Copyright (c) 2008 Kirk Bauer
## Covered under the included MIT/X-Consortium License:
##    http://www.opensource.org/licenses/mit-license.php
## All modifications and contributions by other persons to
## this script are assumed to have been donated to the
## Logwatch project and thus assume the above copyright
## and licensing terms.  If you want to make contributions
## under your own copyright or a different license this
## must be explicitly stated in the contribution an the
## Logwatch project reserves the right to not accept such
## contributions.  If you have made significant
## contributions to this script and want to claim
## copyright please contact logwatch-devel@lists.sourceforge.net.
#########################################################
use strict;

#Init String Container
my (
$baddelete,     $ipaddr,    $ipport,
$lastattempt,   $oldinfo,   $phase2,
$rest,          $stateinfo, $today,
$vid
);
#Init Hashes
my (
%badexch,           %conns,                         %crlUpdate,
%crlUpdateSince,    %ipsecSAs,                      %loglines,
%maxattempts,       %peerID,
%peerIP,            %quickmode,                     %rekeyfail,
%rekeyfailI1,       %rekeyfailQI1,                  %rekeyfailQR1,
%rekeyfailR1,       %rekeyfail_ICMPunreachable,     %rekeyfail_notknown,
%rekeysuccess,      %relevantlog,                   %setupfail,
%statechain,        %xauthsuccess,
%vendorID
);

my $debug=0;
$vendorID{"p....}..&..i...5..............................."}="KAME/Racoon";

while(<>) {
# May  4 04:04:33 abigail Pluto[24170]: "abigail-istari" #1479: ISAKMP SA expired (LATEST!)

   chop;
   my ($month,$day,undef,undef,$process,$conn,$msg)=split(/ +/,$_,7);
   $today="$month $day";

   next unless ($process =~ /pluto/i);
   my $iserror=0;

   if ($conn eq "ERROR:") {
      $iserror = 1;
      (undef,$conn,$msg)=split(/ +/,$msg,3);
   }

   $loglines{$today}++;

   print STDERR "Msg: $msg\n" if $debug>1;

   if($msg =~ /([^\#]*)\#(\d*)\:(.*)/) {
      $ipaddr    = $1;
      $stateinfo = $2;
      $rest      = $3;
   } elsif($msg =~ /no Phase 1 state for Delete/) {
      # baddelete not currently used
      #$baddelete++;
      next;
   } elsif($msg =~ /from ([^:]*)\:([^:]*)\: Main Mode message is part of an unknown exchange/) {
      $ipaddr = $1;
      $ipport = $2;
      $badexch{"[$ipaddr]:$ipport"}++;
      next;
   } else {
      print STDERR "Failed to decode: $msg (of $_)\n" if $debug;
      next;
   }

   #  print STDERR "conn: $conn IP: $ipaddr STATE: $stateinfo\n" if $debug;

   $conn =~ s/\"(.*)\"/$1/;
   $conn =~ s/\[\d\]$//;

   $conns{$conn}++;
   if(!defined($peerIP{"$conn|$ipaddr"})) {
      #print STDERR "Adding $ipaddr to $conn\n" if $debug;
      $peerIP{$conn}=$peerIP{$conn}.$ipaddr." ";
   }
   $peerIP{"$conn|$ipaddr"}++;

   # This code no longer seems to be active
   #$stateobjects{$stateinfo}++;
   #if(!defined($peer{$stateinfo}) && length($ipaddr)>0) {
   #   $peer{$stateinfo}=$ipaddr;
   #}

   # ignore following
   next if($rest =~ /ISAKMP SA expired/);
   next if($rest =~ /responding to Main Mode/);
   next if($rest =~ /responding to Quick Mode/);
   next if($rest =~ /IPsec SA expired/);
   next if($rest =~ /ignoring informational payload, type IPSEC_INITIAL_CONTACT/);
   next if($rest =~ /regenerating DH private secret to avoid Pluto 1.0 bug handling public value with leading zero/);
   next if($rest =~ /regenerating DH private secret to avoid Pluto 1.0 bug handling shared secret with leading zero/);
   next if($rest =~ /shared DH secret has leading zero -- triggers Pluto 1.0 bug/);
   next if($rest =~ /(received|ignoring) Delete SA(|\(0x.*\)) payload/);
   next if($rest =~ /received and ignored informational message/);
   next if($rest =~ /discarding duplicate packet; already STATE_MAIN_../);
   next if($rest =~ /discarding duplicate packet; already STATE_QUICK_../);
   next if($rest =~ /deleting state \(STATE_MAIN_..\)/);
   next if($rest =~ /deleting state \(STATE_QUICK_..\)/);
   next if($rest =~ /Quick Mode .. message is unacceptable because it uses a previously used Message ID/);
   next if($rest =~ /deleting connection .* instance with peer .*/);
   next if($rest =~ /dropping and reinitiating exchange to avoid Pluto 1.0 bug handling DH shared secret with leading zero byte/);
   next if($rest =~ /KE has 191 byte DH public value; 192 required/);
   next if($rest =~ /retransmitting in response to duplicate packet; already STATE_MAIN_../);
   next if($rest =~ /(Main mode p|P)eer ID is /);
   next if($rest =~ /transition from state .* to state/);
   next if($rest =~ /NAT-Traversal: Result using/);
   next if($rest =~ /no crl from issuer/);
   next if($rest =~ /I am sending (a certificate request|my cert)/);
   next if($rest =~ /no suitable connection for peer/);
   next if($rest =~ /sending encrypted notification/);
   next if($rest =~ /enabling possible NAT-traversal with method/);
   next if($rest =~ /(received|ignoring) Vendor ID payload/);
   next if($rest =~ /ignoring unknown Vendor ID payload/);
   next if($rest =~ /Dead Peer Detection \(RFC 3706\): enabled/);
   next if($rest =~ /DPD: No response from peer - declaring peer dead/);
   next if($rest =~ /DPD Error: could not find newest phase 1 state/);
   next if($rest =~ /Informational Exchange message is invalid because it has a previously used Message ID/);
   next if($rest =~ /discarding packet received during asynchronous work \(DNS or crypto\) in STATE_(MAIN|QUICK)_../);
   next if($rest =~ /STATE_(MAIN|QUICK)_[RI][1-3]: sent [MQ][RI][1-3], expecting [MQ][IR][1-3]/);
   next if($rest =~ /STATE_QUICK_R1: sent QR1, inbound IPsec SA installed, expecting QI2/);
   next if($rest =~ /down-client output/);
   next if($rest =~ /(restore|update)resolvconf-client output/);
   next if($rest =~ /transform .* ignored/);
   next if($rest =~ /multiple DH groups were set in aggressive mode\./);
   next if($rest =~ /received mode cfg reply/);
   next if($rest =~ /modecfg: Sending IP request/);
   next if($rest =~ /setting .* address to/);
   next if($rest =~ /STATE_XAUTH_I1: XAUTH client - awaiting CFG_set/);
   next if($rest =~ /initiating Aggressive Mode/);
   next if($rest =~ /Aggressive mode peer ID is/);
   next if($rest =~ /protocol\/port in Phase \d ID Payload must be/);
   next if($rest =~ /XAUTH: Bad Message: /);
   next if($rest =~ /XAUTH: Answering XAUTH challenge with user/);
   next if($rest =~ /Received IP4|DNS|subnet /);
   next if($rest =~ /sendto on .* to .* failed in delete notify/);
   $relevantlog{"$today"}++;

   print STDERR "Rest is $rest\n" if $debug>1;

   # but process these.
   if($rest =~ /initiating Main Mode to replace \#(.*)/) {
      $oldinfo = $1;
      $statechain{$conn.$stateinfo}="$conn|$oldinfo";
      next;

   } elsif($rest =~ /initiating Main Mode/) {
      $statechain{$conn.$stateinfo}="$conn";
      next;

   } elsif($rest =~ /initiating Quick Mode (.*) to replace \#(.*)/) {
      $oldinfo = $2;
      $phase2  = $1;
      $statechain{"$conn|$stateinfo"}="$conn|$oldinfo";
      $quickmode{"$conn"}=$quickmode{"$conn"}." ".$phase2;
      next;

   } elsif($rest =~ /initiating Quick Mode (.*)/) {
      $phase2  = $1;
      $statechain{"$conn|$stateinfo"}="$conn";
      $quickmode{"$conn"}=$quickmode{"$conn"}." ".$phase2;
      next;

   } elsif($rest =~ /ISAKMP SA established/) {
      $rekeysuccess{$conn}++;
      next;

   } elsif($rest =~ /cannot respond to IPsec SA request because no connection is known for (.*)/) {
      $rekeyfail{$conn}++;
      #$rekeyfail_notknown{$1}++;

   } elsif($rest =~ /crl update is overdue since (.*)/) {

      $crlUpdate{$conn}++;
      $crlUpdateSince{$conn} = $1;
      next;

   } elsif($rest =~ /max number of retransmissions \((.*)\) reached STATE_QUICK_I./) {

      $rekeyfail{$conn}++;
      #$rekeyfailQI1{$conn}++;
      next;

   } elsif($rest =~ /max number of retransmissions \((.*)\) reached STATE_QUICK_R./) {

      $rekeyfail{$conn}++;
      #$rekeyfailQR1{$conn}++;
      next;

   } elsif($rest =~ /max number of retransmissions \((.*)\) reached STATE_MAIN_I./) {

      $rekeyfail{$conn}++;
      #$rekeyfailI1{$conn}++;
      next;

   } elsif($rest =~ /max number of retransmissions \((.*)\) reached STATE_MAIN_R./) {
      $rekeyfail{$conn}++;
      #$rekeyfailR1{$conn}++;
      next;

   } elsif($rest =~ /ERROR: asynchronous network error report on .* for message to .* port 500, complainant .*:.*errno (.*), origin ICMP type (.*) code (.*)/) {
      $rekeyfail{$conn}++;
      #$rekeyfail_ICMPunreachable{$conn}++;

   } elsif($rest =~ /ERROR: asynchronous network error report on .* for message to .* port 500, complainant .*:.*errno (.*), origin ICMP type (.*) code (.*)/) {
      $rekeyfail{$conn}++;
      #$rekeyfail_ICMPunreachable{$conn}++;

   } elsif($rest =~ /XAUTH: Successfully Authenticated/) {
      $xauthsuccess{$conn}++;

   } elsif($rest =~ /starting keying attempt (.*) of an unlimited number/) {
      $lastattempt=$1;
      if($maxattempts{$conn} < $lastattempt) {
         $maxattempts{$conn} = $lastattempt;
      }
      next;

   } elsif($rest =~ /Vendor ID: (.*)/) {
      $vid=$1;
      if(defined($vendorID{$vid})) {
         $peerID{$conn}=$vendorID{$vid};
      } else {
         $peerID{$conn}="unknown $vid";
         $vendorID{$vid}="unknown $vid at $stateinfo/$ipaddr\n";
      }
      next;
   } elsif($rest =~ /prepare-client output.*/) {
      $setupfail{$conn}++;
   } elsif(($rest =~ /sent QI2, IPsec SA established/) ||
         ($rest =~ /IPsec SA established/)) {
      $ipsecSAs{$conn}++;
      next;

   } else {
      print STDERR "UNKNOWN: $_"."\n";
   }
}

if (keys %loglines) {
   print "Overview summary of log files:\n";
   foreach my $day (keys %loglines) {
      print "\t $day had ".$loglines{$day}." entries of which ".$relevantlog{$day}." were relevant\n";
   }
}

if (keys %conns) {
   print "Summary by peer:\n";
   foreach my $conn (keys %conns) {
      print "  Peer $conn caused $conns{$conn} lines of output.\n";
      print "\tconnected from:".$peerIP{$conn}."\n";
      if(defined($peerID{$conn})) {
         print "\tVID: ".$peerID{$conn}."\n";
      }
      print "\tKeyed: ".($rekeysuccess{$conn}+0)." successes ",($rekeyfail{$conn}+0)." failures (max retries: ".($maxattempts{$conn}+0).")\n";
      print "\tIPsec SAs: ".($ipsecSAs{$conn}+0)."\n";
      if($setupfail{$conn} > 0) {
         print "\tSetup failures: ".$setupfail{$conn}."\n";
      }
      if($xauthsuccess{$conn} > 0) {
         print "\tXAUTH successful connections: ".$xauthsuccess{$conn}."\n";
      }
      if($crlUpdate{$conn} > 0) {
         print "\tOverdue CRL update since: ".$crlUpdateSince{$conn}." (".$crlUpdate{$conn}." times)\n";
      }
   }
}

if (keys %badexch) {
   print "Summary of bad peers\n";
   foreach my $badpeer (keys %badexch) {
      print "\t".$badpeer." caused ".$badexch{$badpeer}." bad exchanges\n";
   }
}

# vi: shiftwidth=3 tabstop=3 syntax=perl et
# Local Variables:
# mode: perl
# perl-indent-level: 3
# indent-tabs-mode: nil
# End: