#!/usr/bin/perl -w
#
# Parameters:
#
# 	logfile      - Location of the query log
# 	statefile    - Where to put temporary statefile.
#
# Stolen directly from the bind log analzyer
# contributed by Nicolai Langfeldt
#
# Modified by Sean Whitney
# $Id: dansguardian,v 1.1 2011/10/04 13:53:17 root Exp root $
#
#%# family=contrib

use strict;

my $QUERYLOG = $ENV{logfile} || '/var/log/dansguardian/access.log';
my $STATEFILE = $ENV{statefile}
  || '/var/lib/munin/plugin-state/dansguardian.state';
my %IN;

sub get_state {
    open( Q, "< $STATEFILE" ) or die;
    while (<Q>) {
        chomp;
        my ( $q, $n ) = split( /\s+/, $_, 2 );
        $IN{$q} = $n unless defined( $IN{$q} );
    }
    close(Q);
}

sub do_stats {
    my $k;

    open( Q, "< $QUERYLOG" ) or die "$!";
    while (<Q>) {
        chomp;
        my ( $date, $time, $sep, $ip, $url, $action, $rest ) = split(' ');
        $action =~ s/[^a-zA-Z0-9]//g;
        $IN{$action}++;
    }
    close(Q);

    get_state;

    open( Q, "> $STATEFILE" ) or die;
    foreach $k ( keys %IN ) {
        print "query_$k.value ", $IN{$k}, "\n";
        print Q "$k ", $IN{$k}, "\n";
    }
    close(Q);

}

sub do_config {
    my $k;

    print "graph_title Danguardian hits by type\n";
    print "graph_vlabel Hits / \${graph_period}\n";
    print "graph_category network\n";
    print "graph_info This graph shows the rate of traffic through a dansguardian filter\n";

    get_state;
    foreach $k ( keys %IN ) {
        print "query_$k.label $k\n";
	print "query_$k.type DERIVE\n";
	print "query_$k.min 0\n";
    }
}

if ( defined( $ARGV[0] ) and ( $ARGV[0] eq 'config' ) ) {
    do_config;
    exit(0);
}

do_stats;

# vim:syntax=perl