/usr/share/logwatch/scripts/services/identd is in logwatch 7.4.1-2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 | #!/usr/bin/perl
##########################################################################
# $Id: identd 150 2013-06-18 22:19:38Z mtremaine $
##########################################################################
#####################################################
## 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.
#########################################################
$Debug = $ENV{'LOGWATCH_DEBUG'} || 0;
$Detail = $ENV{'LOGWATCH_DETAIL_LEVEL'} || 0;
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...
$ThisLine = <STDIN>;
while (defined($ThisLine)) {
if ( $Debug >= 5 ) {
print STDERR "DEBUG: Line Number " . $DebugCounter . ":\n";
print STDERR "DEBUG: " . $ThisLine;
}
$NeedNextLine = 1;
if ( ($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 $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 $ThisOne (@EmptyRequests) {
print " " . $ThisOne . "\n";
}
}
if (($#InvalidRequests >= 0) and ($Detail >= 5)) {
print "\nInvalid requests:\n";
foreach $ThisOne (@InvalidRequests) {
print " " . $ThisOne . "\n";
}
}
if (keys %OtherList) {
print "\n**Unmatched Entries**\n";
foreach $line (sort {$a cmp $b} keys %OtherList) {
print "$line: $OtherList{$line} Time(s)\n";
}
}
exit(0);
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