#!/usr/local/bin/php-5.6
<?php

// A small script to grab the NTPD Server statistics from a NTPD server
// Needed commands: php, ntpd, ntpq, ntpdc
//
// Install:
// Add the following to your snmpd.conf file:
// extend ntpdserver /var/www/librenms/scripts/ntpd-server.php
//
// Version 1.1 By:
// All In One - Dennis de Houx <info@all-in-one.be>

// START SETTINGS ///
$ntpq  = '/usr/local/sbin/ntpq';
$ntpdc = '/usr/local/sbin/ntpdc';
// Change this to true if you have clk_jitter, sys_jitter in the ntpq -c rv output
$newstats_style = false;
// END SETTINGS ///

// DO NOT EDIT UNDER THIS LINE

$cmd   = shell_exec($ntpq.' -c rv');
$cmd2  = shell_exec($ntpdc.' -c iostats');
$vars  = array();
$vars2 = array();
$vars  = explode(',', $cmd);
$vars2 = str_replace(' ', '', $cmd2);
$vars2 = explode("\n", $vars2);


function doSNMPv2($vars, $vars2, $newstats_style)
{
    $ntpd = array();
    foreach ($vars as $item => $value) {
        if (!empty($value)) {
            $temp = explode('=', $value);
            if (isset($temp[1])) {
                $ntpd[trim($temp[0])] = trim($temp[1]);
            }
        }
    }

    foreach ($vars2 as $item => $value) {
        if (!empty($value)) {
            $temp = explode(':', $value);
            if (isset($temp[1])) {
                $ntpd[trim($temp[0])] = trim($temp[1]);
            }
        }
    }

    $var          = array();
    $var['stratum']   = (isset($ntpd['stratum']) ? $ntpd['stratum'] : 'U');
    $var['offset']    = (isset($ntpd['offset']) ? $ntpd['offset'] : 'U');
    $var['frequency'] = (isset($ntpd['frequency']) ? $ntpd['frequency'] : 'U');
    if ($newstats_style) {
        $var['jitter']    = (isset($ntpd['clk_jitter']) ? $ntpd['clk_jitter'] : 'U');
        $var['noise']     = (isset($ntpd['sys_jitter']) ? $ntpd['sys_jitter'] : 'U');
        $var['stability'] = (isset($ntpd['clk_wander']) ? $ntpd['clk_wander'] : 'U');
    }
    else {
        $var['jitter']    = (isset($ntpd['jitter']) ? $ntpd['jitter'] : 'U');
        $var['noise']     = (isset($ntpd['noise']) ? $ntpd['noise'] : 'U');
        $var['stability'] = (isset($ntpd['stability']) ? $ntpd['stability'] : 'U');
    }

    $var['uptime']         = (isset($ntpd['timesincereset']) ? $ntpd['timesincereset'] : 'U');
    $var['buffer_recv']    = (isset($ntpd['receivebuffers']) ? $ntpd['receivebuffers'] : 'U');
    $var['buffer_free']    = (isset($ntpd['freereceivebuffers']) ? $ntpd['freereceivebuffers'] : 'U');
    $var['buffer_used']    = (isset($ntpd['usedreceivebuffers']) ? $ntpd['usedreceivebuffers'] : 'U');
    $var['packets_drop']   = (isset($ntpd['droppedpackets']) ? $ntpd['droppedpackets'] : 'U');
    $var['packets_ignore'] = (isset($ntpd['ignoredpackets']) ? $ntpd['ignoredpackets'] : 'U');
    $var['packets_recv']   = (isset($ntpd['receivedpackets']) ? $ntpd['receivedpackets'] : 'U');
    $var['packets_sent']   = (isset($ntpd['packetssent']) ? $ntpd['packetssent'] : 'U');
    foreach ($var as $item => $count) {
        echo $count."\n";
    }

}//end doSNMPv2()


doSNMPv2($vars, $vars2, $newstats_style);
