#!/bin/bash
# NTP monitorization plugin for Pandora FMS agent
# Author: Manuel A. Gulín Bejarano
# Version: 1.0
# Date: 15/03/2013
#
# 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 3 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, see <http://www.gnu.org/licenses/>.

function help {
        echo -e "NTP monitorization agent plugin for Pandora FMS agent. http://pandorafms.com" 
        echo -e "Syntax:"
        echo -e "\t\t$0"
        exit
}

if [ $# -ne 0 ]
then
        help
        exit -1
fi

# Info about ntp actual sync source - all retrieved with one query, later it's going to be appropiately parsed
NTP_INFO=`ntpq -p | grep "*"`


# Hostname of syncing source
NTP_HOST=`echo "$NTP_INFO" | awk '{print $2}'`
# Stratum of syncing source
NTP_STRATUM=`echo "$NTP_INFO" | awk '{print $3}'`
# Roundtrip  of syncing source
NTP_ROUNDTRIP=`echo "$NTP_INFO" | awk '{print $8}'`
# Offset of syncing source
NTP_OFFSET=`echo "$NTP_INFO" | awk '{print $9}'`
# Jitter of syncing source
NTP_JITTER=`echo "$NTP_INFO" | awk '{print $10}'`


# Module to get the name of the current NTP source
echo -e "\t<module>"
echo -e "\t<name><![CDATA[NTP: Host name]]></name>"
echo -e "\t<description><![CDATA[Host name of syncing source]]></description>"
echo -e "\t<type>async_string</type>"
echo -e "\t<disabled>0</disabled>"
echo -e "\t<data><![CDATA[$NTP_HOST]]></data>"
echo -e "\t</module>"


# Module to get the stratum of the current NTP source
echo -e "\t<module>"
echo -e "\t<name><![CDATA[NTP: Host stratum]]></name>"
echo -e "\t<description><![CDATA[Stratum of syncing source]]></description>"
echo -e "\t<type>async_data</type>"
echo -e "\t<unit>st</unit>"
echo -e "\t<min>0</min>"
echo -e "\t<max>32</max>"
echo -e "\t<min_warning>4</min_warning>"
echo -e "\t<max_warning>5</max_warning>"
echo -e "\t<min_critical>6</min_critical>"
echo -e "\t<disabled>0</disabled>"
echo -e "\t<data><![CDATA[$NTP_STRATUM]]></data>"
echo -e "\t</module>"

# Module to get the roundtrip delay of the current NTP source
echo -e "\t<module>"
echo -e "\t<name><![CDATA[NTP: Host roundtrip]]></name>"
echo -e "\t<description><![CDATA[Roundtrip delay of syncing source (msec)]]></description>"
echo -e "\t<type>generic_data</type>"
echo -e "\t<unit>msec</unit>"
echo -e "\t<min>0</min>"
echo -e "\t<min_warning>1500</min_warning>"
echo -e "\t<max_warning>1999</max_warning>"
echo -e "\t<min_critical>2000</min_critical>"
echo -e "\t<disabled>0</disabled>"
echo -e "\t<data><![CDATA[$NTP_ROUNDTRIP]]></data>"
echo -e "\t</module>"

# Module to get the offset relative to the current NTP source
echo -e "\t<module>"
echo -e "\t<name><![CDATA[NTP: Host offset]]></name>"
echo -e "\t<description><![CDATA[Offset relative to syncing source (msec)]]></description>"
echo -e "\t<type>generic_data</type>"
echo -e "\t<unit>msec</unit>"
echo -e "\t<min>0</min>"
echo -e "\t<min_warning>1500</min_warning>"
echo -e "\t<max_warning>1999</max_warning>"
echo -e "\t<min_critical>2000</min_critical>"
echo -e "\t<disabled>0</disabled>"
echo -e "\t<data><![CDATA[$NTP_OFFSET]]></data>"
echo -e "\t</module>"

# Module to get the jitter relative to the current NTP source
echo -e "\t<module>"
echo -e "\t<name><![CDATA[NTP: Host jitter]]></name>"
echo -e "\t<description><![CDATA[Jitter relative to syncing source (msec)]]></description>"
echo -e "\t<type>generic_data</type>"
echo -e "\t<unit>msec</unit>"
echo -e "\t<min>0</min>"
echo -e "\t<min_warning>20</min_warning>"
echo -e "\t<max_warning>49</max_warning>"
echo -e "\t<min_critical>50</min_critical>"
echo -e "\t<disabled>0</disabled>"
echo -e "\t<data><![CDATA[$NTP_JITTER]]></data>"
echo -e "\t</module>"