[SCRIPT] avctree 1.0.4

[Lee Kok Seng]

Hello,

Here is version 1.0.4 of the script previously posted.
a. Added regular expression (perl) to select messages to display
     e.g   avctree  --re="context=~/java/"  will show any avc message  
that has 'java' in
    scontext *or* tcontext.
     e.g  avctree --re="*=~/initrc/" will show any avc messages that  
has 'su' anywhere.

b. Added message selection based on age of message
      e.g avctree --age 3h will show avc messages not older than 3  
hours from when you run the script.

c. Added 'unique' format of print
    e.g  avctree --uniq will show avc messages that are unique once,  
i.e. scontext, tcontext, comm,
    name, dev, ino, key all match up (except time tag, audit tag,  
pid ... so, use with this in mind)

Try this: avctree --uniq --age 1d

/ks

p/s:  This post may have duplicates resulting in problem in posting  
this update. Sorry if so.
         This will also be 'it' for the time being, having got this  
script to give me the productivity
          I need to work with selinux.

------------------------------------------------------ cut  
---------------------------------------------
#!/usr/bin/perl -w
sub lmsg
{
    print <<LMSG;;
# Copyright (C) 2007,  LEE, "Kok Seng" (kokseng at ieee dot org)
#
#    This program is free software; you can redistribute it and/or
#    modify it under the terms of the GNU General Public License as
#    published by the Free Software Foundation; either version 2 of
#    the License, or (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, write to the Free Software
#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
#                                        02111-1307  USA
#
LMSG
}
# History
# 1.0.0		Format avc messages
# 1.0.1		added --re option to select messages to print
# 1.0.2 	--re option allow context to mean scontext or tcontext, all  
to mean any key
# 1.0.3		added --age option to select based on age of message
# 1.0.4 	added --uniq option to show messages that are unique
my $version='1.0.4+';
use strict;
use warnings;
my ($thisScript) = ($0 =~ /.*?/*(\w+)$/);
#  
------------------------------------------------------------------------ 
----------------------
use Getopt::Long;
sub usage
{
    lmsg;
    print "Usage:\n";
print <<USAGETXT;
    $thisScript version $version
    Utility to format avc messages for readability
    ----------------------------------------------------------------------- 
---------------------
    $thisScript  [[options] ...]

Options:
         --log=[ all | file,...] : List log files to parse, delimited  
by comma.
                                       no argument or all => /var/log/ 
messages, /var/log/kernel
         --tags                  : Show time and audit tags
         --key=key,...           : List messages indexed-sorted by  
specified key
    							      no argument or all => all keys
                                       Not specified =>  
scontext,tcontext,action,comm,name
         --trim=yes|no|1|0       : Trim context string. Default: yes
         --re="expr"             : Filter using rsupplied regular  
expression
                                   special:
                                   a. To match either scontext or  
tcontext, specify
                                      --re="context=~/^(dhcp|su)/"  
which will match scontext
                                      or tcontext if either starts  
wuth dhcp or su.
                                   b. To match any key's value,  specify
                                      --re="*=~/dhcp|su/" which will  
print all messages
                                      that has dhcp or su in any  
key's value
         --age[=time-spec]       : Show messages that are not older  
than specified age.
                                   time spec :=  numeric[unit]
                                   numeric := integer or  
float         default: 10
                                   unit := s | m | h | d |  
w           default: m
         --uniq                  : Show in unique format.
    	--help
    ----------------------------------------------------------------------- 
---------------------
     Examples:
     a.  $thisScript --key=scontext
            Print avc messages indexed-sorted by source context.
     b.  $thisScript --key=tcontext
            Print avc messages indexed-sorted by target context.
     c.  $thisScript --key=comm
            Print avc messages indexed-sorted by command executed.
     d.  $thisScript --key=name
            Print avc messages indexed-sorted by target object's name.
     e.  $thisScript --key=all  or $thisScript --key
            Print avc messages indexed-sorted by all keys.
     f.  $thisScript
            Print avc messages indexed-sorted by scontext, tcontext,  
comm, name (default)
     g.  $thisScript --trim=no
            Print avc messages without trimming context string.
     h.  $thisScript --log=/var/log/messages,/var/log/messages.1,/var/ 
log/messages.2
            Print avc messages from log files listed (delimited by  
comma).
     i.  $thisScript --tags
           Print avc messages, including in each message the log time  
tag and audit tag.
     j.  $thisScript --re="name=~/dhcp/ && comm=~/dhcp/"
           Print avc messages which has dhcp in  name or comm
USAGETXT
    exit -1;
}
#
my $logARG;												# Log files to parse
my $tagsARG;											# Show time and audit tags
my $catARG;												# Categories to print
my $helpARG;											# Help
my $trimARG;											# Trim context string for readability
my $ageARG;												# Age specification
my $reARG;												# Regular Expression
my $uniqARG;											# Unique format
usage(), exit unless GetOptions(
    'log:s'				=>	$logARG,
    'tags!'				=>	$tagsARG,
    'key:s'				=>	$catARG,
    'trim:s'			=>  $trimARG,
    're:s'				=>	$reARG,
    'age:s'				=>  $ageARG,
    'uniq!'				=> 	$uniqARG,
    'help!'				=>	$helpARG
);
usage() if (defined($helpARG));
##  
------------------------------------------------------------------------ 
----------------------
## Option: skip tags
my $skiptags = defined($tagsARG)?0:1;
## Option: log files
my @logOPT	= grep  -e $_,  split /,|\n|\r/, $logARG if (defined 
($logARG));
@logOPT = ('/var/log/messages','/var/log/kernel','/var/log/debug','/ 
var//log/audit')
    if (defined($logARG) && ((!scalar @logOPT) || grep /all/, @logOPT));
@logOPT = ('/var/log/audit') if (!scalar @logOPT && -e '/var/log/ 
audit');
@logOPT = ('/var/log/kernel') if (!scalar @logOPT && -e '/var/log/ 
kernel');
@logOPT = ('/var/log/messages') if (!scalar @logOPT);
## Option: Category
my @catOPT	= split /,|\n|\r/, $catARG if (defined($catARG));
my @catDEF = ('scontext','tcontext','comm','name');
## Option: Trim
my $trimOPT	=  defined($trimARG) ? ($trimARG =~ /no|0|/i ? 0 : 1  ) : 1;
## Option: regular expression
my @reOPT	= split /,|\n|\r/, $reARG if (defined($reARG));
## Option: age
my @ageOPT	= split /,|\n|\r/, $ageARG if (defined($ageARG));
@ageOPT = ('10m') if (defined($ageARG) && !scalar @ageOPT);
my ($age, $tu) = ($ageOPT[0] =~ /\s*([\d.]+)\s*([smhdw]).*/);
undef $ageARG if (!defined($age));
$age *= defined($tu)?($tu eq 'm'?60:($tu eq 'h'?3600:($tu eq 'd'? 
86400:($tu eq 'w'?604800:1)))):1 if (defined($ageARG));
##  
------------------------------------------------------------------------ 
----------------------
#
## Regular expression for parsing avc's 'denied' messages
my $avcRE = qr/^(\w{3}\s+\d{2}\s+\d{2}:\d{2}:\d{2})[\s\w]+:\s*audit\ 
(([\d.:]+))\s*:\s*avc\s*:\s*denied\s+{\s+([\w\s]+)\s+}\s+for\s+(.*)/;
## Holds indexed avc message records
my %avc;								
my $epoch = time();
##  
------------------------------------------------------------------------ 
----------------------
## contextFMT
# 		Format context string for readability
sub contextFMT
{
    my $ctxt = shift;
    my ($u,$r,$t,$l) = split /:/, $ctxt;
    $u =~ s/(.*)_./$1/;
    $r =~ s/(.*)_./$1/;
    $t =~ s/(.*)_./$1/;
    return $u . '-' . $r . '-'  . $t;
}
##  
------------------------------------------------------------------------ 
----------------------
## prepRE  reference-avc reference-re-list
# 	Prepare regular expression from user supplied string
sub prepRE
{
    my $avc = shift;
    my $reOPT = shift;
    my @re = @$reOPT;
    if (grep /*\s*=~/, @re) {
    	my @restr;
    	push @restr, /\s**\s*=~\s*/([^/]+)/\s*/g  foreach (@re);
    	my $str = "{my $ret=0;  ($ret |= (";
    	s/(.*)/$this{$_}=~/$_// foreach (@restr);
    	$str .= join ' || ', @restr;
    	$str .= ")) foreach (keys %this); $ret;}";
    	#print "\nprepRE=$str";
    	return $str;
    } else {
    	# tbd : improve on regex / ... / parsing
    	s/\s*context\s*(=~\s*/[^/]+/)\s*/(scontext$1||tcontext$1)/g  
foreach (@re);
    	s/\s*(\w+)\s*=~/$this{'$1'} =~/g foreach (@re);
    	my $str = '(' .  join(' ) || ( ' , @re) .  ')';
    	$str =~ s/||\s*(\s*)//g;
    	return $str;
    }
}

##  
------------------------------------------------------------------------ 
----------------------
## readLOG  log-file-name
# 		Reads the specified log file
sub readLOG
{
    my $avc = shift;
    my $logfile = shift;
    my $reopt = shift;
    my $logsn = ($logfile =~ /.*/(.*)$/)[0];
    my $tmax = defined($avc->{'_tcontext_max_'})?$avc-> 
{'_tcontext_max_'}:0;
    my $smax = defined($avc->{'_scontext_max_'})?$avc-> 
{'_scontext_max_'}:0;
    my $rex = undef;
    
    open LOGF, '<' . $logfile || die "Cannot open input file: $logfile";

while (<LOGF>) {
    	s/\r|\n//g;
    	next if (!$_);
    	next if (!/\s+avc:\s+/);
    	my ($timetag, $audit, $action, $detail)  = ($_ =~ /$avcRE/);
    	next if (!defined($action)||!defined($detail)||!defined($timetag)||! 
defined($audit));

# okay, we have a avc 'denied' message
    	my %this;		# this hash will keep the message's key=value
    	my @fields = split /\s|\r|\n/, $detail;
    	foreach  (@fields) {
    		next if (!$_);
    		my ($key,$val) = split/=/;
    		next if (!$key||!$val);
    		$val =~ s/["']*([^"']*)["']*/$1/;
    		$this{"$key"} = $val;
    	}

# check age of message
    	if (defined($ageARG) && defined($audit)) {
    		my ($tm) = ($audit =~ /([\d+.]+).*/);
    		next if (defined($tm) && $epoch - $tm  > $age);
    	}
    	
    	# Filter, if specified
    	$rex = prepRE($avc, $reopt) if (!defined($rex) && defined($reopt));
    	next if (defined($rex) && ! eval $rex );

$this{'action'} = $action;
    	$this{'timetag'} = $timetag;
    	$this{'audit'} = $audit;
    	$this{'file'}= $logsn;
    	if ($trimOPT) {
    		$this{'scontext'} = contextFMT($this{'scontext'});
    		$this{'tcontext'} = contextFMT($this{'tcontext'});
    	}
    	$smax = length($this{'scontext'})  if ($smax < length($this 
{'scontext'}));
    	$tmax = length($this{'tcontext'})  if ($tmax < length($this 
{'tcontext'}));

# Check if this message is unique
    	my $uniq = 1;
    	if (defined($uniqARG)&&defined($avc{'scontext'})&&defined($avc 
{'scontext'}->{$this{'scontext'}})) {
    		foreach (@{$avc{'scontext'}->{$this{'scontext'}}}) {
    			if ($_->{'tcontext'} eq $this{'tcontext'} &&
    				($_->{'comm'} eq $this{'comm'})&&	
    				($_->{'name'} eq $this{'name'}) &&
    				($_->{'tclass'} eq $this{'tclass'}) &&
    				($_->{'action'} eq $this{'action'}) &&
    				(!defined($_->{'dev'}) || $_->{'dev'} eq $this{'dev'}) &&		
    				(!defined($_->{'ino'}) || $_->{'ino'} eq $this{'ino'}) && 		
    				(!defined($_->{'key'}) || $_->{'key'} eq $this{'key'}) 	
    				) {
    				$_->{'_same_'} = [()] if (!defined($_->{'_same_'}));
    				push @{$_->{'_same_'}}, %this;
    				$uniq = 0;
    				last;
    			}
    		}
    	}
    	next if (!$uniq);

# Okay, let's index the records with various keys
    	foreach (keys %this) {
    		next if (/audit|timetag|file|_same_/);
    		$avc->{$_} = {} if (!defined($avc->{$_}));
    		$avc->{$_}->{$this{$_}} = [()] if (!defined($avc->{$_}->{$this 
{$_}}));
    		push @{$avc->{$_}->{$this{$_}}}, %this;
    	}

}
    close LOGF;
    $avc->{'_scontext_max_'} = $smax;
    $avc->{'_tcontext_max_'} = $tmax;
}
##  
------------------------------------------------------------------------ 
----------------------
##
# keyTREE key
#	Show selected key in a tree view
sub keyTREE
{
    my $avc = shift;
    my $kcat = shift;
    my $showfile = shift;

my $hcat = $avc->{$kcat};
    my $lvl = 1;
    my $isSctx = ($kcat =~ /scontext/);
    my $isTctx = ($kcat =~ /tcontext/);

my $smax = $isSctx ? 0 : $avc->{'_scontext_max_'};
    my $tmax = $isTctx ? 0 : $avc->{'_tcontext_max_'};

return if (/_scontext_max_|_tcontext_max_/);
    print "\n# "; for ($_=0; $_ < 80; $_++) {print "-";}
    print "[", $kcat, "]\n";

foreach my $kmsg (sort keys %$hcat) {
    	printf "|\n+-[%-*s]\n", $smax, $hcat->{$kmsg}[0]->{$kcat};
    	$lvl++;
    	my $buf;
    	my $i;
    	my $cnt = scalar @{$hcat->{$kmsg}};
    	foreach my $hmsg (@{$hcat->{$kmsg}}) {
    		
    		$buf .= sprintf "%s %-*s %s %-*s  %s%s(%s) : %s : %s %s%s%s\n",
    				$isTctx? '+<-' : '+->',
    				$smax, $isSctx?'':$hmsg->{'scontext'},
    				$isTctx||$isSctx ? '' : '-+->',
    				$tmax, $isTctx?'':$hmsg->{'tcontext'},
    				defined($showfile)? $hmsg->{'file'}.'> ':'',
    				$hmsg->{'comm'}, $hmsg->{'pid'}, $hmsg->{'tclass'},
    				$hmsg->{'action'},
    				defined($hmsg->{'name'})?': '.$hmsg->{'name'}:'',
    				defined($hmsg->{'key'})?' : '.$hmsg->{'key'}:'',
    				defined($hmsg->{'dev'})?' : '.$hmsg->{'dev'} . (defined($hmsg-> 
{'ino'})?' : '.$hmsg->{'ino'}:'') : ''
    			;
    		$i = $lvl; $buf  = '| ' . $buf while (--$i); print $buf; $buf = "";

foreach my $kmsg (sort keys %$hmsg) {
    			next if ($kmsg =~ /file|scontext|tcontext|comm|pid|tclass|action| 
name|dev|ino|key|_same_|$kcat/);
    			next if ($skiptags && $kmsg =~ /timetag|audit/);
    			$buf .= sprintf "%s=%s ", $kmsg, $hmsg->{$kmsg};
    		}
    		$buf .= sprintf "+-[%u] similar message%s", scalar @{$hmsg-> 
{'_same_'}},
    			scalar @{$hmsg->{'_same_'}} > 1 ? 's':''
    			if (defined($uniqARG) && defined($hmsg->{'_same_'}));
    		if ($buf) {
    			$buf = sprintf "%*s%s\n", ($cnt==1)?$smax+$tmax+10+2:$smax+$tmax 
+10, ,"", $buf;
    			$i = (--$cnt)? $lvl:$lvl-1; $buf  = '| ' . $buf while ($i--);  
print $buf; $buf = "";
    		}
    	}
    	$lvl--;
    }
    $lvl--;
}
##  
------------------------------------------------------------------------ 
----------------------
# Parse log files
my @logLIST=@logOPT;
readLOG(%avc, $_, scalar @reOPT?@reOPT:undef) foreach (@logLIST);
# Decide which category to print
@catOPT = (sort keys %avc)  if (defined($catARG) && (! scalar  
@catOPT) ||  grep /all/,@catOPT ) ;
@catOPT = @catDEF if (!defined($catARG));
print "\n> $thisScript version $version, Copyright (C) 2007,  LEE,  
"Kok Seng" (kokseng at ieee dot org)";
print "\n> Notice: get help and condition of usage inforamtion  
regarding this script: $thisScript --help";
print "\n> File(s) parsed: ", join ', ', @logOPT, " Key(s) : ", join  
', ', @catOPT;
print "\n> Regular expression = ", join ' or ', @reOPT if (scalar  
@reOPT);
print "\n> Age not more than ", $ageARG, " (", $age, " seconds)" if  
(defined($ageARG));
print "\n> Unique mode is ON" if (defined($uniqARG));
print "\n";
keyTREE(%avc, $_,scalar @logOPT > 1?1:undef) foreach (@catOPT);
##  
------------------------------------------------------------------------ 
----------------------
# vim :ts=4:sw=4:
1;

[Rahul Sundaram]

Lee Kok Seng wrote:
> Hello,
>
> Here is version 1.0.4 of the script previously posted.
> a. Added regular expression (perl) to select messages to display
>     e.g   avctree  --re="context=~/java/"  will show any avc message 
> that has 'java' in
>     scontext *or* tcontext.
>     e.g  avctree --re="*=~/initrc/" will show any avc messages that has 
> 'su' anywhere.
>
> b. Added message selection based on age of message
>      e.g avctree --age 3h will show avc messages not older than 3 hours 
> from when you run the script.
>
> c. Added 'unique' format of print
>    e.g  avctree --uniq will show avc messages that are unique once, i.e. 
> scontext, tcontext, comm,
>    name, dev, ino, key all match up (except time tag, audit tag, pid ... 
> so, use with this in mind)
>
> Try this: avctree --uniq --age 1d
>
> /ks

How about submitting and maintaining this as a package in Fedora?

http://fedoraproject.org/wiki/PackageMaintainers/Join

Rahul

[Lee Kok Seng]

On 18 May 2007, at 7:35 AM, Rahul Sundaram wrote:
> Lee Kok Seng wrote:
> > Hello,
> > Here is version 1.0.4 of the script previously posted.
> > a. Added regular expression (perl) to select messages to display
> >     e.g   avctree  --re="context=~/java/"  will show any avc  
> > message that has 'java' in
> >     scontext *or* tcontext.
> >     e.g  avctree --re="*=~/initrc/" will show any avc messages  
> > that has 'su' anywhere.
> > b. Added message selection based on age of message
> >      e.g avctree --age 3h will show avc messages not older than 3  
> > hours from when you run the script.
> > c. Added 'unique' format of print
> >    e.g  avctree --uniq will show avc messages that are unique  
> > once, i.e. scontext, tcontext, comm,
> >    name, dev, ino, key all match up (except time tag, audit tag,  
> > pid ... so, use with this in mind)
> > Try this: avctree --uniq --age 1d
> > /ks
>
> How about submitting and maintaining this as a package in Fedora?
>
> http://fedoraproject.org/wiki/PackageMaintainers/Join
>
> Rahul

No issue with me, but this is a simple script, does it warrant being  
a package?
Let me understand more what kind of work it takes to going down that  
path.

[John Dennis]

On Fri, 2007-05-18 at 17:09 +0800, Lee Kok Seng wrote:
> On 18 May 2007, at 7:35 AM, Rahul Sundaram wrote:
> > Lee Kok Seng wrote:
> > > Hello,
> > > Here is version 1.0.4 of the script previously posted.
> > > a. Added regular expression (perl) to select messages to display
> >
> > How about submitting and maintaining this as a package in Fedora?
> >
> > http://fedoraproject.org/wiki/PackageMaintainers/Join
> No issue with me, but this is a simple script, does it warrant being  
> a package?
> Let me understand more what kind of work it takes to going down that  
> path.

FYI the audit package now includes a parsing library (auparse). It is
witten in C and includes a python binding. It is also capable of
performing searches. The thinking is auparse will be utilized by several
pieces of audit technology and will serve as the base technology for
audit parsing.

Note, at the moment it is just a library of routines, but I imagine
shortly the package will also include a front end utility.

Utilizing the audit parsing support in the audit RPM is probably
preferable to introducing new RPM's.

[Manuel Wolfshant]

Lee Kok Seng wrote:
> Hello,
>
> Here is version 1.0.4 of the script previously posted.

Hi

Under centos 4.5 (perl-5.8.5-36.RHEL4.i386) and Fedora 6 
(perl-5.8.8-10)  I get:

Use of uninitialized value in pattern match (m//) at ./avctree.pl line 133.
> pl version 1.0.4+, Copyright (C) 2007,  LEE, "Kok Seng" (kokseng at

ieee dot org)

Could you please fix this ?

manuel

[Lee Kok Seng]

On 18 May 2007, at 5:57 PM, Manuel Wolfshant wrote:
> Lee Kok Seng wrote:
> > Hello,
> >
> > Here is version 1.0.4 of the script previously posted.
>
> Hi
>
> Under centos 4.5 (perl-5.8.5-36.RHEL4.i386) and Fedora 6  
> (perl-5.8.8-10)  I get:
>
> Use of uninitialized value in pattern match (m//) at ./avctree.pl  
> line 133.
> > pl version 1.0.4+, Copyright (C) 2007,  LEE, "Kok Seng" (kokseng
>
> at ieee dot org)
>
> Could you please fix this ?
>
> manuel

Lee Kok Seng wrote:
> Hello,
>
> Here is version 1.0.4 of the script previously posted.

And this is on another centos (4.4) :

[root@imap ~]# ./avctree.pl --log=all
Use of uninitialized value in pattern match (m//) at ./avctree.pl  
line 133.
readline() on closed filehandle LOGF at ./avctree.pl line 197.
readline() on closed filehandle LOGF at ./avctree.pl line 197.

Hello,

Thanks for the report. Here is the fix.

/ks
-------------------------------------------------------------- 
[cut]----------------------------------------------------------
Index: avctree
===================================================================
--- avctree	(revision 21)
+++ avctree	(working copy)
@@ -27,7 +27,7 @@
# 1.0.2 	--re option allow context to mean scontext or tcontext, all  
to mean any key
# 1.0.3		added --age option to select based on age of message
# 1.0.4 	added --uniq option to show messages that are unique
-my $version='1.0.4+';
+my $version='1.0.4++';
use strict;
use warnings;
my ($thisScript) = ($0 =~ /.*?/*(\w+)$/);
@@ -115,7 +115,7 @@
my $skiptags = defined($tagsARG)?0:1;
## Option: log files
my @logOPT	= grep  -e $_,  split /,|\n|\r/, $logARG if (defined 
($logARG));
-@logOPT = ('/var/log/messages','/var/log/kernel','/var/log/debug','/ 
var//log/audit')
+@logOPT = ('/var/log/audit','/var/log/kernel','/var/log/messages','/ 
var/log/debug')
    if (defined($logARG) && ((!scalar @logOPT) || grep /all/, @logOPT));
@logOPT = ('/var/log/audit') if (!scalar @logOPT && -e '/var/log/ 
audit');
@logOPT = ('/var/log/kernel') if (!scalar @logOPT && -e '/var/log/ 
kernel');
@@ -130,7 +130,7 @@
## Option: age
my @ageOPT	= split /,|\n|\r/, $ageARG if (defined($ageARG));
@ageOPT = ('10m') if (defined($ageARG) && !scalar @ageOPT);
-my ($age, $tu) = ($ageOPT[0] =~ /\s*([\d.]+)\s*([smhdw]).*/);
+my ($age, $tu) = ($ageOPT[0] =~ /\s*([\d.]+)\s*([smhdw]).*/) if  
@ageOPT;
undef $ageARG if (!defined($age));
$age *= defined($tu)?($tu eq 'm'?60:($tu eq 'h'?3600:($tu eq 'd'? 
86400:($tu eq 'w'?604800:1)))):1 if (defined($ageARG));
##  
------------------------------------------------------------------------ 
----------------------
@@ -191,7 +191,8 @@
    my $tmax = defined($avc->{'_tcontext_max_'})?$avc-> 
{'_tcontext_max_'}:0;
    my $smax = defined($avc->{'_scontext_max_'})?$avc-> 
{'_scontext_max_'}:0;
    my $rex = undef;
-	
+
+	return if ( ! -e $logfile );	
    open LOGF, '<' . $logfile || die "Cannot open input file: $logfile";
    while (<LOGF>) {
@@ -235,16 +236,19 @@
    	# Check if this message is unique
    	my $uniq = 1;
+		#print "\n $this{scontext} $this{tcontext} $this{comm} $this 
{action} $this{tclass}";
    	if (defined($uniqARG)&&defined($avc{'scontext'})&&defined($avc 
{'scontext'}->{$this{'scontext'}})) {
    		foreach (@{$avc{'scontext'}->{$this{'scontext'}}}) {
+				#print "\n      $_->{scontext} $_->{tcontext} $_->{comm} $_-> 
{action} $_->{tclass}";
+
    			if ($_->{'tcontext'} eq $this{'tcontext'} &&
    				($_->{'comm'} eq $this{'comm'})&&	
-					($_->{'name'} eq $this{'name'}) &&
    				($_->{'tclass'} eq $this{'tclass'}) &&
    				($_->{'action'} eq $this{'action'}) &&
-					(!defined($_->{'dev'}) || $_->{'dev'} eq $this{'dev'}) &&		
-					(!defined($_->{'ino'}) || $_->{'ino'} eq $this{'ino'}) && 		
-					(!defined($_->{'key'}) || $_->{'key'} eq $this{'key'}) 	
+					(!defined($_->{'name'}) || (defined($this{'name'}) && $_-> 
{'name'} eq $this{'name'})) &&
+					(!defined($_->{'dev'}) || (defined($this{'dev'}) && $_->{'dev'}  
eq $this{'dev'})) &&		
+					(!defined($_->{'ino'}) || (defined($this{'ino'}) && $_->{'ino'}  
eq $this{'ino'})) && 		
+					(!defined($_->{'key'}) || (defined($this{'key'}) && $_->{'key'}  
eq $this{'key'})) 	
    				) {
    				$_->{'_same_'} = [()] if (!defined($_->{'_same_'}));
    				push @{$_->{'_same_'}}, %this;
@@ -336,10 +340,11 @@
readLOG(%avc, $_, scalar @reOPT?@reOPT:undef) foreach (@logLIST);
# Decide which category to print
@catOPT = (sort keys %avc)  if (defined($catARG) && (! scalar  
@catOPT) ||  grep /all/,@catOPT ) ;
-@catOPT = @catDEF if (!defined($catARG));
+@catOPT = grep !/^\s*$/, @catDEF if (!defined($catARG));
print "\n> $thisScript version $version, Copyright (C) 2007,  LEE,  
"Kok Seng" (kokseng at ieee dot org)";
print "\n> Notice: get help and condition of usage inforamtion  
regarding this script: $thisScript --help";
-print "\n> File(s) parsed: ", join ', ', @logOPT, " Key(s) : ", join  
', ', @catOPT;
+print "\n> File(s) parsed: ", join ', ', @logOPT;
+print "\n> Key(s) : " .  join(', ', @catOPT);
print "\n> Regular expression = ", join ' or ', @reOPT if (scalar  
@reOPT);
print "\n> Age not more than ", $ageARG, " (", $age, " seconds)" if  
(defined($ageARG));
print "\n> Unique mode is ON" if (defined($uniqARG));

[Manuel Wolfshant]

Lee Kok Seng wrote:
> Hello,
>
> Here is version 1.0.4 of the script previously posted.

And this is on another centos (4.4) :

[root@imap ~]# ./avctree.pl --log=all
Use of uninitialized value in pattern match (m//) at ./avctree.pl line 133.
readline() on closed filehandle LOGF at ./avctree.pl line 197.
readline() on closed filehandle LOGF at ./avctree.pl line 197.