#!/bin/bash

VERSION='1.4'
# clientlaunch.d/smartmon.cfg
#[smart]
#    ENVFILE $XYMONCLIENTHOME/etc/xymonclient.cfg
#    CMD $XYMONCLIENTHOME/ext/smartmon.bash
#    LOGFILE $XYMONCLIENTHOME/logs/smartmon.log
#    INTERVAL 5m

# IMPORTANT::
# yum install smartmontools
# Add the following to sudoers file (visudo):
#  * Defaults:xymon !requiretty
#  * xymon  ALL=NOPASSWD:/usr/sbin/smartctl

#DEBUG# echo "bb=[$BB]"
#DEBUG# echo "bbdisp=[$BBDISP]"
NL="

"
DASHES="<hr>"
DASH="<hr width='25%' align='left'>"

COLOR="clear"
COLUMN="smart"
MSG="No S.M.A.R.T. device detected."
VERMSG="<br> <br> Version: ${VERSION}"
RAID=""
SMARTCTL="/usr/sbin/smartctl"
SUDO="/usr/bin/sudo"
DATE=$(date)
EXTRA='OK'

MSGdetail=''
shopt -s lastpipe

# build a list of devices smartmon might be monitoring
((cnt=0))
scan=$(${SUDO} ${SMARTCTL} --scan | awk '{print $1,$3}')
cnt=$(echo "${scan}" | wc -l)
# if no devices, leave color clear
if ((0 < cnt))
 then 
   COLOR='green'
   MSG=''
#  process each device and build up messages
   set ${scan}
   for i in $(seq 1 ${cnt})
    do
      dev="$1"
      shift
      kind="$1"
      shift
# smartctl -d scsi -H /dev/sda
    statusResult=$(${SUDO} ${SMARTCTL} -d ${kind} -H ${dev} | grep 'SMART Health Status')
# Cd/DVD devices are Unavailable -- so skip them
    skip=$(echo ${statusResult} | grep 'SMART support is: Unavailable')
    if [[ 'X' == "X${skip}" ]]
     then
       status=$(echo "${statusResult}" | grep 'OK' | wc -l)
#      anytime we get a problem -- make color red
       if (( 0 == status ))
        then
          COLOR='red'
          EXTRA='Failure!'
        fi
       summary=$(${SUDO} ${SMARTCTL} -i ${dev})
       MSG="${MSG}${NL}${dev}${DASH}${statusResult}<br>${summary}${DASHES}"
       detail=$(${SUDO} ${SMARTCTL} --all ${dev})
       MSGdetail="${MSGdetail}${NL}${dev}${DASH}${detail}${DASHES}"
     fi
    done
 fi

${BB} ${BBDISP} "status ${MACHINE}.${COLUMN} ${COLOR} ${DATE} ${EXTRA} <dashboard-break> <h3>Device Info</h3>${MSG} <h3>Device details</h3>${MSGdetail}${NL}${VERMSG}"
#DEBUG# tmp="$?"
#DEBUG# echo "error code: $tmp"