#!/usr/bin/perl -w
#
# Copyright (C) Rune Nordbøe Skillingstad
#
# 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; version 2 dated June,
# 1991.
#
# 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.
#
#
#
# Graphs pagers per minute of HP printers
#
# downloaded by Peter Palfrader from http://munin.projects.linpro.no/wiki/plugin-snmp__pages
# Wed,  9 Aug 2006 16:48:17 +0200
#
# Peter Palfrader:
#   - set a minimum of 0 for pages.
#   - fix graph labels
#
#%# family=snmpauto
#%# capabilities=snmpconf

use strict;
use Net::SNMP;

my $DEBUG     = $ENV{'DEBUG'} || 0;

my $host      = $ENV{host}      || undef;
my $port      = $ENV{port}      || 161;
my $community = $ENV{community} || "public";
my $timeout   = $ENV{timeout}   || 1;

my $response;

if(defined $ARGV[0] and $ARGV[0] eq "snmpconf") {
    print "require 1.3.6.1.2.1.43.10.2.1.4.1.1\n";
    exit 0;
}

if($0 =~ /^(?:|.*\/)snmp_([^_]+)_pages$/) {
    $host  = $1;
    if($host =~ /^([^:]+):(\d+)$/) {
	$host = $1;
	$port = $2;
    }
}
elsif(!defined($host)) {
    print "# Debug: $0 -- $1\n" if $DEBUG;
    die "# Error: couldn't understand what I'm supposed to monitor.";
}

my ($session, $error) = Net::SNMP->session(
    -hostname  => $host,
    -community => $community,
    -port      => $port,
    -timeout   => $timeout
);

if(!defined ($session)) {
    die "Croaking: $error";
}

if(defined $ARGV[0] and $ARGV[0] eq "config") {
    print "host_name $host\n";
    print "graph_title Pages
graph_args --base 1000 -l 0 
graph_vlabel Printed pages pr minute
graph_scale no
graph_category other
graph_info This graph numer of printed pages
graph_total Total
pages.label pages
pages.min 0
pages.draw AREA
pages.type DERIVE
pages.cdef pages,60,*
pages.info pages printed per minute
";

exit 0;
}

print "pages.value ", &get_single ($session, "1.3.6.1.2.1.43.10.2.1.4.1.1"), "\n";

sub get_single {
    my $handle = shift;
    my $oid    = shift;
    
    print "# Getting single $oid...\n" if $DEBUG;
   
    $response = $handle->get_request ($oid);
    
    if(!defined $response->{$oid}) {
	print "# No response\n" if $DEBUG;
	return "";
    } else {
	print "# Got response \"".$response->{$oid}."\"\n" if $DEBUG;
	return $response->{$oid};
    }
}