##########################################################################

# $Id$

##########################################################################

########################################################

# The openvpn script was written by:

#    Jim Richardson <develop@aidant.net>

########################################################

#####################################################

## Copyright (c) 2008 Jim Richardson

## 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;

my $Debug = $ENV{'LOGWATCH_DEBUG'};

my $Detail = $ENV{'LOGWATCH_DETAIL_LEVEL'};

my %Auth;

my %ConnErrors;

my %ConnectCauseDrop;

my %Connections;

my %Crypt;

my %Error;

my %IncorrectPassword;

my $MaxClients;

my $MaxConn;

my %OtherList;

my %PluginCallFailure;

my %PluginCallOK;

my %VerifyList;

my %VersionInfo;

if ( $Debug >= 5 ) {

    print STDERR "\n\nDEBUG \n\n";

}

while (defined(my $ThisLine = <STDIN>)) {

   chomp($ThisLine);

   # normalise - this could possibly be used for more detailed per host statistics

   # further down

   $ThisLine =~ s/^([\d]+\.[\d]+\.[\d]+\.[\d]+)\:([\d]+) //;

   $ThisLine =~ s/^([\S]+)\/([\d]+\.[\d]+\.[\d]+\.[\d]+)\:([\d]+) //;

   if (

      ($ThisLine =~ /Inactivity timeout \(--ping-restart\), restarting/) or

      ($ThisLine =~ /^\/sbin\//) or

      ($ThisLine =~ /^Attempting to establish TCP connection with [\d.]+:\d+/) or

      ($ThisLine =~ /^Closing TUN\/TAP interface/) or

      ($ThisLine =~ /^Connection reset, restarting \[\d+\]/) or

      ($ThisLine =~ /^Control Channel Authentication/) or

      ($ThisLine =~ /^Control Channel MTU parms/) or

      ($ThisLine =~ /CRL CHECK OK: \/.*\//) or

      ($ThisLine =~ /^Data Channel MTU parms/) or

      ($ThisLine =~ /^Delayed exit in \d+ seconds/) or

      ($ThisLine =~ /^Diffie-Hellman initialized/) or

      ($ThisLine =~ /^event_wait : Interrupted system call \(code=\d+\)/) or

      ($ThisLine =~ /^Exiting/) or

      ($ThisLine =~ /^Expected Remote Options/) or

      ($ThisLine =~ /^GID set to/) or

      ($ThisLine =~ /^IFCONFIG POOL/) or

      ($ThisLine =~ /^IMPORTANT: OpenVPN's default port number is now 1194/) or

      ($ThisLine =~ /^Initialization Sequence Completed/) or

      ($ThisLine =~ /^Listening for incoming TCP connection on \S+:\d+/) or

      ($ThisLine =~ /^LZO compression initialized/) or

      ($ThisLine =~ /^Local Options hash/) or

      ($ThisLine =~ /^MULTI: Learn:/) or

      ($ThisLine =~ /^MULTI: multi_init called/) or

      ($ThisLine =~ /^MULTI: multi_create_instance called/) or

      ($ThisLine =~ /^MULTI: primary virtual IP for/) or

      ($ThisLine =~ /^MULTI: TCP INIT maxclients=\d+ maxevents=\d+/) or

      ($ThisLine =~ /^MULTI: bad source address from client .*, packet dropped/) or

      ($ThisLine =~ /^MULTI_sva: pool returned IPv4=/) or

      ($ThisLine =~ /^Need IPv6 code in mroute_extract_addr_from_packet/) or

      ($ThisLine =~ /^NOTE: UID\/GID downgrade will be delayed because of --client, --pull, or --up-delay/) or

      ($ThisLine =~ /OpenVPN .* built on [A-Z][a-z]{2} [ 12]?[0-9] [0-9]{4}/) or

      ($ThisLine =~ /^OPTIONS IMPORT/) or

      ($ThisLine =~ /^PLUGIN_CALL: plugin function /) or

      ($ThisLine =~ /^PLUGIN_INIT: POST .* intercepted=/) or

      ($ThisLine =~ /^Preserving previous TUN\/TAP instance: \w+/) or

      ($ThisLine =~ /^PUSH: Received control message/) or

      ($ThisLine =~ /^Re-using pre-shared static key/) or

      ($ThisLine =~ /^Re-using SSL\/TLS context/) or

      ($ThisLine =~ /read UDPv4 \[.*\]: No route to host \(code=[0-9]*\)/) or

      ($ThisLine =~ /^Restart pause, \d+ second\(s\)/) or

      ($ThisLine =~ /^ROUTE_GATEWAY/) or

      ($ThisLine =~ /^send_push_reply/) or

      ($ThisLine =~ /^SENT CONTROL/) or

      ($ThisLine =~ /^SIGTERM\[hard,[^\]]*\] received, process exiting/) or

      ($ThisLine =~ /^SIGUSR1\[soft,(connection-reset|ping-restart)\] received, (process|client-instance) restarting/) or

      ($ThisLine =~ /Socket Buffers: R=\[[0-9]+->[0-9]+\] S=\[[0-9]+->[0-9]+\]/) or

      ($ThisLine =~ /^TCP\/UDP: Closing socket/) or

      ($ThisLine =~ /^TCP\/UDP: Dynamic remote address changed during TCP connection establishment/) or

      ($ThisLine =~ /^TCP connection established with [\d.]+:\d+/) or

      ($ThisLine =~ /^TCPv\d_(CLIENT|SERVER) link (local|remote)/) or

      ($ThisLine =~ /^TLS-Auth MTU parms/) or

      ($ThisLine =~ /^TLS: Initial packet from/) or

      ($ThisLine =~ /^TLS: soft reset/) or

      ($ThisLine =~ /^TLS: tls_process: killed expiring key$/) or

      ($ThisLine =~ /^TLS: move_session: dest=.* src=.* reinit_src=[0-9]*/) or

      ($ThisLine =~ /^TLS: tls_multi_process: untrusted session promoted to (semi-)?trusted/) or

      ($ThisLine =~ /TLS: tls_multi_process: killed expiring key/) or

      ($ThisLine =~ /^TLS: new session incoming connection from .*/) or

      ($ThisLine =~ /TLS Error: TLS object -> incoming plaintext read error/) or

      ($ThisLine =~ /TLS ERROR: received control packet with stale session-id=.*/) or

      ($ThisLine =~ /^TUN\/TAP device \w+ opened/) or

      ($ThisLine =~ /TUN\/TAP TX queue length set to [0-9]*/) or

      ($ThisLine =~ /^UDPv4 link /) or

      ($ThisLine =~ /^UID set to/) or

      ($ThisLine =~ /^VERIFY OK: nsCertType=\w+/) or

      ($ThisLine =~ /^chroot to /) or

      ($ThisLine =~ /^LDAP bind failed: Invalid credentials$/) or

      ($ThisLine =~ /Authenticate\/Decrypt packet error: bad packet ID \(may be a replay\): \[ #.* \] -- see the man page entry for --no-replay and --replay-window for more info or silence this warning with --mute-replay-warnings/)

   ) {

      # Don't care about these...

   }  elsif (my ($status, $depth, $dn) = ( $ThisLine =~ /^VERIFY (.*): depth=(.*), (.*)/ )) {

		#VERIFY OK: depth=0, /C=US/ST=TX/O=Aidant.Enterprises/OU=IT/CN=delta.aidant.net/Email=keymaster@aidant.net: 23 Time(s)

      $VerifyList{"status: $status depth: $depth DN: $dn"}++;

   }  elsif (my ($status, $dn) = ( $ThisLine =~ /^VERIFY X509NAME (.*): (.*)/ )) {

      #VERIFY X509NAME OK: /C=US/ST=TX/O=Aidant.Enterprises/OU=IT/CN=delta.aidant.net/Email=keymaster@aidant.net: 23 Time(s)

      $VerifyList{"status: $status X509Name DN: $dn"}++;

   }  elsif (my ($status, $dn) = ( $ThisLine =~ /^CRL CHECK (.*): (.*)/ )) {

		#CRL CHECK OK: C=US, ST=CO, L=Boulder, O=NWRA, OU=Boulder, CN=user, name=root, emailAddress=xxxx@xxxx.xxx

      $VerifyList{"CRL check status: $status DN: $dn"}++;

   } elsif ($ThisLine =~ /^TLS: Username\/Password authentication/) {

      $VerifyList{$ThisLine}++;

   } elsif ($ThisLine =~ /^Incorrect password supplied for .* "(.*)"/) {

      $IncorrectPassword{$1}++;

   } elsif ($ThisLine =~ m/^MULTI: new incoming connection would exceed maximum number of clients/) {

      $MaxClients++;

   } elsif ($ThisLine =~ m/^OpenVPN [\d.]+ [\w-]+ [\[\]\w ]+ built on [\w]+ +[\d]+ [\d]+$/) {

      $VersionInfo{$ThisLine} = 1;

   } elsif (my ($config, $peer, $port) = ($ThisLine =~ m/^\[([\S]+)\] Peer Connection Initiated with [^\d]*([\d]+\.[\d]+\.[\d]+\.[\d]+)\:([\d]+)/)) {

      push (@{$Connections{$config}{$peer}}, $port) unless grep(/^$port$/,@{$Connections{$config}{$peer}});

   } elsif (my ($peer, $port) = ($ThisLine =~ m/^Peer Connection Initiated with [^\d]*([\d]+\.[\d]+\.[\d]+\.[\d]+)\:([\d]+)/)) {

      push (@{$Connections{"client"}{$peer}}, $port) unless grep(/^$port$/,@{$Connections{"client"}{$peer}});

   } elsif (my ($dir, $channel, $bits, $algo) = ($ThisLine =~ /^(Incoming|Outgoing) (Control Channel) Authentication: Using ([\d]+ bit) message hash '(\S+)' for HMAC authentication/)) {

      $Auth{$channel}{$dir}{"$bits $algo"}++;

   } elsif (my ($channel, $dir, $bits, $algo) = ($ThisLine =~ /^(Data Channel) (Encrypt|Decrypt): Using ([\d]+ bit) message hash '(\S+)' for HMAC authentication/)) {

      $Auth{$channel}{$dir}{"$bits $algo"}++;

   } elsif (my ($channel, $proto, $cipher) = ($ThisLine =~ /^(Control Channel): (\w+), cipher (.+)/)) {

      $Crypt{$channel}{$proto}{$cipher}++;

   } elsif (my ($channel, $dir, $algo, $bits) = ($ThisLine =~ /^(Data Channel) (Encrypt|Decrypt): Cipher '(\S+)' initialized with ([\d]+ bit) key/)) {

      $Crypt{$channel}{$dir}{"$bits $algo"}++;

   } elsif (my ($proto, $host, $port, $error) = ($ThisLine =~ /^(TCP|UDP): connect to ([\d.]+):(\d+) failed, will try again in \d+ seconds: (.*)/)) {

      $ConnErrors{$error}{"$proto $host:$port"}++;

   } elsif (my ($proto, $error) = ($ThisLine =~ /^read (\w+)_SERVER \[\]: (.*)/)) {

      $ConnErrors{$error}{"$proto"}++;

   } elsif (my ($name) = ($ThisLine =~ /MULTI: new connection by client '(.*)' will cause previous active sessions by this client to be dropped.  Remember to use the --duplicate-cn option if you want multiple clients using the same certificate or username to concurrently connect./)) {

      $ConnectCauseDrop{$name}++;

   } elsif ((my ($Err) = ($ThisLine =~ /(read UDPv4 \[ECONNREFUSED\]: Connection refused \(code=111\))/)) or

      (my ($Err) = ($ThisLine =~ /(read UDPv4 \[EHOSTUNREACH\]: No route to host \(code=113\))/))) {

      $Error{$Err}++;

   } elsif (my ($plugin,$call,$status) = ($ThisLine =~ /^PLUGIN_CALL: POST (.*)\/(PLUGIN_.*) status=(.*)/)) {

      if ($status == 0) {

         $PluginCallOK{$plugin}{$call}++;

      } else {

         $PluginCallFailure{$plugin}{$call}++;

      }

   } else {

      # Report any unmatched entries...

      # remove PID from named messages

      #$ThisLine =~ s/^(client [.0-9]+)\S+/$1/;

      $OtherList{$ThisLine}++;

   }

   #$LastLine = $ThisLine;

}

################################################

if(keys %ConnErrors) {

   print "Connection Errors:\n";

   foreach my $error (sort keys %ConnErrors) {

      print "   $error:\n";

      foreach my $host (sort keys %{$ConnErrors{$error}}) {

         print "      $host: ".$ConnErrors{$error}{$host}." Time(s)\n";

      }

   }

}

if (keys %IncorrectPassword) {

   print "\nIncorrect Password\n";

   foreach my $DN (sort {$a cmp $b} keys %IncorrectPassword) {

      print "   $DN: $IncorrectPassword{$DN} Time(s)\n";

   }

}

if (keys %VerifyList) {

   print "\nVerify\n";

   foreach my $line (sort {$a cmp $b} keys %VerifyList) {

      print "   $line: $VerifyList{$line} Time(s)\n";

   }

}

if ($MaxClients) {

   print "\nMaximum Number of Clients reached $MaxClients Time(s)\n";

}

if (keys %Connections) {

   print "\nConnections:";

   foreach my $config (sort keys %Connections) {

      print "\n   Configuration $config:";

      foreach my $peer (sort keys %{$Connections{$config}}) {

         my $ports = $Connections{$config}{$peer};

         print "\n      $peer connected " . ($#{$ports} + 1) . " Time(s), Ports:";

         for (my $i = 0; $i <= $#{$ports}; $i++) {

            print "\n        " if (($i + 16) % 20 == 0);

            print " $$ports[$i]";

         }

      }

      print "\n";

   }

}

if (keys %Auth and $Detail >= 10) {

   print "\nCiphers used for Authentication:";

   foreach my $channel (sort keys %Auth) {

      print "\n   $channel:";

      foreach my $dir (sort keys %{$Auth{$channel}}) {

         print "\n      $dir:";

         foreach my $algo (sort keys %{$Auth{$channel}{$dir}}) {

            print "\n         $algo used $Auth{$channel}{$dir}{$algo} Time(s)";

         }

      }

      print "\n";

   }

}

if (keys %Crypt and $Detail >= 10) {

   print "\nCiphers used for Encryption:";

   foreach my $channel (sort keys %Crypt) {

      print "\n   $channel:";

      foreach my $dir (sort keys %{$Crypt{$channel}}) {

         print "\n      $dir:";

         foreach my $algo (sort keys %{$Crypt{$channel}{$dir}}) {

            print "\n         $algo used $Crypt{$channel}{$dir}{$algo} Time(s)";

         }

      }

      print "\n";

   }

}

if (keys %VersionInfo) {

   print "\nVersion Information:\n";

   foreach my $vers (sort keys %VersionInfo) {

      print "   $vers\n"

   }

}

if (keys %ConnectCauseDrop) {

   print "\n Previous active sessions of the same client dropped upon new connection:\n";

   foreach my $name (sort keys %ConnectCauseDrop) {

      print "   client $name: $ConnectCauseDrop{$name} Time(s)\n"

   }

}

if (keys %Error) {

   print "\n UDPv4 errors:\n";

   foreach my $Err (sort keys %Error) {

     print "   " . $Err . ": " .$Error{$Err}. " Time(s)\n";

   }

}

if (keys %PluginCallFailure) {

   print "\nPlugin Call Failures:";

   foreach my $plugin (sort keys %PluginCallFailure) {

      print "\n   Plugin $plugin:";

      foreach my $call (sort keys %{$PluginCallFailure{$plugin}}) {

         my $times = $PluginCallFailure{$plugin}{$call};

         print "\n      $call failed $PluginCallFailure{$plugin}{$call} Time(s)";

      }

      print "\n";

   }

}

if (keys %PluginCallOK and $Detail >= 5) {

   print "\nPlugin Call OK:";

   foreach my $plugin (sort keys %PluginCallOK) {

      print "\n   Plugin $plugin:";

      foreach my $call (sort keys %{$PluginCallOK{$plugin}}) {

         my $times = $PluginCallOK{$plugin}{$call};

         print "\n      $call succeeded $PluginCallOK{$plugin}{$call} Time(s)";

      }

      print "\n";

   }

}

if (keys %OtherList) {

   print "\n**Unmatched Entries**\n";

   foreach my $line (sort {$a cmp $b} keys %OtherList) {

      print "   $line: $OtherList{$line} Time(s)\n";

   }

}

exit(0);

# vi: shiftwidth=3 tabstop=3 syntax=perl et

# Local Variables:

# mode: perl

# perl-indent-level: 3

# indent-tabs-mode: nil

# End: