#!/usr/bin/perl
#
# Plugin to monitor the number of guests/users on a vbulletin4 forum
# Since we are using a regexp, this will work for EN forum only... adapt the regexp if your forum is not using that language.
# visual-regexp is a great help for tuning the regexp (package exists on Debian and Ubuntu repositories)
#
#
# Parameters supported:
#
#       config
#       autoconf
#
# Configurable variables
#
#       url  to online.php, this page is part of vbulletin distribution, pp=1 so the page is fast to load and doesn't give us too many unwanted info
#
# $Log$
#
#
# Not sure about those lines...
#
# Magic markers:
#%# family=auto
#%# capabilities=autoconf

my $ret = undef;

if (! eval "require LWP::UserAgent;")
{
        $ret = "LWP::UserAgent not found";
}

# CHANGE ME
my $URL = exists $ENV{'url'} ? $ENV{'url'} : "http://www.url.to/forums/online.php?pp=1";


# We will use this variable, not on this release ;-)
my $forum_type = exists $ENV{'type'} ? $ENV{'type'} : "vbulletin";

# same here
my %regexp = ("vbulletin"=> "<h1\>(\d+)[^\d]+(\d+)\sguests\</h1>",
                         "punbb" => "",
                         "phpbb" => "");

my $type = undef;
my $timeout = 30;

if ( defined $ARGV[0] and $ARGV[0] eq "autoconf" )
{
        if ($ret)
        {
                print "no ($ret)\n";
                exit 1;
        }

}

if ( defined $ARGV[0] and $ARGV[0] eq "config" )
{
        print "graph_title Forum Users\n";
        print "graph_args -l 0\n";
        print "graph_vlabel current users\n";
        print "graph_category forum\n";
        print "graph_total Total\n";

        print "members.label Members\n";
        print "members.draw AREA\n";
        print "guests.draw STACK\n";
        print "guests.label Guests\n";



        exit 0;
}


my $ua = LWP::UserAgent->new(timeout => $timeout);
my $url = sprintf $URL;
my $response = $ua->request(HTTP::Request->new('GET',$url));

# part of the output we want to catch : <h1>42 members and 420 guests</h1> --> 42 - 420
if ($response->content =~ /<h1>(\d+)\smembers[^\d]+(\d+)\sguests<\/h1>/im)
        {

                print "members.value $1\n";
                print "guests.value $2\n";

        } else {
                print "members.value U\n";
                print "guests.value U\n";
        }


# vim:syntax=perl