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#! @PERL_PATH@
# flowscan - a utility to analyze and report on Cflowd flow files
# Copyright (C) 1998-2001 Dave Plonka
#
# 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., 675 Mass Ave, Cambridge, MA 02139, USA.
# $Id: flowscan.in,v 1.20 2001/02/16 21:17:26 dplonka Exp $
# Dave Plonka <plonka@doit.wisc.edu>
require 5.004; # for UNIVERSAL::can method
use FindBin;
use Cflow qw(:flowvars 1.017);
use Benchmark;
use Getopt::Std;
use POSIX; # for strftime
use File::Basename;
use ConfigReader::DirectiveStyle;
use lib $FindBin::Bin;
use FlowScan; # for mutt_mktime, etc.
'$Revision: 1.20 $' =~ m/(\d+)\.(\d+)/ && (( $VERSION ) = sprintf("%d.%03d", $1, $2));
# Set the default options from the configuration file:
$c = new ConfigReader::DirectiveStyle;
$c->directive('Verbose');
$c->directive('WaitSeconds');
$c->required('FlowFileGlob');
$c->required('ReportClasses');
#$c->load("${FindBin::Bin}/${FindBin::Script}.cf");
$c->load("/etc/${FindBin::Script}/${FindBin::Script}.cf");
$flowfileglob = $c->value('FlowFileGlob');
$opt_w = $c->value('WaitSeconds');
$opt_v = $c->value('Verbose');
@classes = split(m/\s*,\s*/, $c->value('ReportClasses'));
if (!getopts('hvw:g:s:') || $opt_h) {
print STDERR <<_EOF_
usage: $FindBin::Script [-hv] [-w secs] [-s bytes] FlowScanClass [...]
-g - use this glob (file pattern match) when looking for raw
flow files to be processed. Defaults to: '$flowfileglob'
(mnemonic: 'g'lob)
-h - shows this usage information (mnemonic: 'h'elp)
-v - verbose - show warnings (mnemonic: 'v'erbose)
-w secs - process the flow files, and wait secs seconds for new ones
to appear. Flow file will be globbed using
"$flowfileglob". (Don't pass flow file names as arguments
when using this option.)
-s bytes - skip processing of files of size greater than bytes
(mnemonic: 's'kip 's'ize)
_EOF_
;
exit($opt_h? 0 : 2)
}
if ($opt_g) {
$flowfileglob = $opt_g
}
if (@ARGV) {
@classes = @ARGV
}
foreach my $class (@classes) {
eval "use $class";
die "$@" if $@
}
Cflow::verbose($opt_v);
while (1) {
my @files = sort by_timestamp <${flowfileglob}>;
if (@files) {
my $file;
foreach $file (@files) {
my @s = stat($file);
my $dirname = dirname $file;
my $basename = basename $file;
if (!$opt_s || $s[7] <= $opt_s) {
foreach (@classes) {
push(@objects, $_->new || die "$_->new failed\n")
}
# note that "perfile" sets $router which is used by "wanted"...
my $t0 = new Benchmark;
my $size = 0;
foreach ($file) {
if (@_ = stat) {
$size += $_[7]
}
}
my $result = Cflow::find(\&wanted, \&perfile, $file);
my $t1 = new Benchmark;
warn(strftime("%Y/%m/%d %H:%M:%S", localtime),
" $FindBin::Script-$VERSION @classes: Cflow::find took ",
timestr(timediff($t1, $t0)),
" for $size flow file bytes, flow hit ratio: ${result}\n")
if $opt_v;
&report;
my $t2 = new Benchmark;
warn(strftime("%Y/%m/%d %H:%M:%S", localtime),
" $FindBin::Script-$VERSION @classes: report took ",
timestr(timediff($t2, $t1)), "\n") if $opt_v;
} else {
warn(strftime("%Y/%m/%d %H:%M:%S", localtime),
" skipping file ${file} of size $s[7] bytes.\n") if $opt_v;
}
if (-d "$dirname/saved") {
goto ok_label if rename($file, "$dirname/saved/$basename");
warn strftime("%Y/%m/%d %H:%M:%S", localtime),
" rename \"$file\", \"$dirname/saved/$basename\": $!\n";
}
if (!unlink($file)) {
warn strftime("%Y/%m/%d %H:%M:%S", localtime),
" unlink \"$file\": $!\n";
}
ok_label:
# &zero # clear out the totals
@objects = () # DESTROY all objects
}
} else {
last unless $opt_w;
warn("sleep ${opt_w}...\n") if ($opt_v);
sleep $opt_w;
}
}
exit 0;
sub perfile {
my $file = shift;
warn(strftime("%Y/%m/%d %H:%M:%S", localtime),
" working on file ${file}...\n") if $opt_v;
foreach (@objects) {
next unless ($_->can('perfile'));
$_->perfile($file)
}
}
sub wanted {
my $rv = 0; # boolean return value (for "hit ratio" feature of Cflow)
foreach (@objects) {
next unless ($_->can('wanted'));
if ($_->wanted) {
$rv = 1
}
}
return $rv
}
sub report {
foreach (@objects) {
next unless ($_->can('report'));
$_->report
}
}
sub by_timestamp {
FlowScan::file2time_t($a) <=> FlowScan::file2time_t($b)
}
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