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########################################################
# 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/
########################################################
#####################################################
## 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;
my $Debug = $ENV{'LOGWATCH_DEBUG'} || 0;
my $Detail = $ENV{'LOGWATCH_DETAIL_LEVEL'} || 0;
my $DebugCounter = 0;
#Init String Containers
my (
$Host, $Name, $NeedNextLine,
$NextLine, $Text, $User
);
#Init Arrays
my (@EmptyRequests, @InvalidRequests) = ();
#Init Hashes
my (%Identd, %OtherList);
if ( $Debug >= 5 ) {
print STDERR "\n\nDEBUG: Inside Identd Filter \n\n";
$DebugCounter = 1;
}
# This whole NeedNextLine thing is because there are multiple lines that
# go together for these log entries...
my $ThisLine = <STDIN>;
while (defined($ThisLine)) {
if ( $Debug >= 5 ) {
print STDERR "DEBUG: Line Number " . $DebugCounter . ":\n";
print STDERR "DEBUG: " . $ThisLine;
}
$NeedNextLine = 1;
if ( my ($IP,$Hostname,$Port) = ($ThisLine =~ m/^from: (\d+\.\d+\.\d+\.\d+) \( ([^ ]*) \) for: \d+, (\d+)$/) ) {
# this means that somebody accessed identd...
if ( $Debug >= 5 ) {
print STDERR "DEBUG: Found -Connection From- Line -- Reading another line\n";
$DebugCounter++;
}
if (defined($NextLine = <STDIN>)) {
if ( $Debug >= 5 ) {
print STDERR "DEBUG: Line Number " . $DebugCounter . ":\n";
print STDERR "DEBUG: " . $NextLine;
}
if ( ($User) = ($NextLine =~ m/^Successful lookup: \d+ , \d+ : ([^ ]+)\.[^ ]+/) ) {
if ( $Debug >= 5 ) {
print STDERR "DEBUG: Found -Successful Lookup- line (" . $User . ")\n";
}
${Identd{$IP}}[0] = $Hostname;
${Identd{$IP}}[1]++;
push @{${Identd{$IP}}[2]}, $Port;
push @{${Identd{$IP}}[3]}, $User;
}
else {
if ( $Debug >= 5 ) {
print STDERR "DEBUG: No matches... keeping current line.\n";
}
$ThisLine = $NextLine;
$NeedNextLine = 0;
}
}
}
elsif ( ($IP,$Hostname) = ($ThisLine =~ m/^from: (\d+\.\d+\.\d+\.\d+) \(([^ ]*)\) EMPTY REQUEST$/) ) {
if ( $Debug >= 5 ) {
print STDERR "DEBUG: Found -Empty Request- Line\n";
}
$Text = " " . $Hostname . " (" . $IP . ")";
push @EmptyRequests,$Text;
}
elsif ( ($IP,$Hostname,$Name) = ($ThisLine =~ m/^from: (\d+\.\d+\.\d+\.\d+) \(([^ ]*)\) INVALID REQUEST: (.*)$/) ) {
if ( $Debug >= 5 ) {
print STDERR "DEBUG: Found -Invalid Request- Line\n";
}
$Text = " " . $Hostname . " (" . $IP . ") - " . $Name;
push @InvalidRequests,$Text;
}
elsif ( $ThisLine =~ m/^Returned: \d+ , \d+ : NO-USER/ ) {
# Do nothing...
}
elsif ( ($Host) = ( $ThisLine =~ /^Connection from ([^ ]+)/ ) ) {
chomp($Host);
if (defined($NextLine = <STDIN>)) {
if ( $Debug >= 5 ) {
print STDERR "DEBUG: Line Number " . $DebugCounter . ":\n";
print STDERR "DEBUG: " . $NextLine;
}
if ( ($Port,$User) = ($NextLine =~ m/^Successful lookup: \d+ , (\d+) : ([^ ]+)/) ) {
if ( $Debug >= 5 ) {
print STDERR "DEBUG: Found -Successful Lookup- line (" . $User . ")\n";
}
chomp($Port); chomp($User);
${Identd{$Host}}[0] = $Host;
${Identd{$Host}}[1]++;
push @{${Identd{$Host}}[2]}, $Port;
push @{${Identd{$Host}}[3]}, $User;
}
else {
if ( $Debug >= 5 ) {
print STDERR "DEBUG: No matches... keeping current line.\n";
}
$ThisLine = $NextLine;
$NeedNextLine = 0;
}
}
}
elsif ($ThisLine =~ /^Successful lookup: [1234567890]+ , [1234567890]+ : [^ ]+/ ) {
# skip empty entry ...
}
else {
# Report any unmatched entries...
if ( $Debug >= 5 ) {
print STDERR "DEBUG: Found unmatched line\n";
}
chomp($ThisLine);
$OtherList{$ThisLine}++;
}
if ($NeedNextLine == 1) {
$ThisLine = <STDIN>;
}
}
if ( (keys %Identd) and ($Detail >= 10) ) {
print "Identd Lookups:\n";
foreach my $ThisOne (keys %Identd) {
print " Host: " . ${Identd{$ThisOne}}[0] . " (" . $ThisOne . ") - " . ${Identd{$ThisOne}}[1] . " Connection(s).\n";
}
}
if (($#EmptyRequests >= 0) and ($Detail >= 5)) {
print "\nEmpty requests:\n";
foreach my $ThisOne (@EmptyRequests) {
print " " . $ThisOne . "\n";
}
}
if (($#InvalidRequests >= 0) and ($Detail >= 5)) {
print "\nInvalid requests:\n";
foreach my $ThisOne (@InvalidRequests) {
print " " . $ThisOne . "\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:
|
