nagios_check_xenlicense

#!/bin/bash

# Global variables:
PATH='/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin'
SCRIPT_PATH="${0}"
ARGS="${#}"
PARM1="${1}"
WARN="${2}"
PARM2="${3}"
CRIT="${4}"

# BINARY
XEN="sudo /opt/xensource/bin/xe host-license-view"

# STATES
STATE_OK="0"
STATE_WARNING="1"
STATE_CRITICAL="2"
STATE_UNKNOWN="3"

# Functions:

  # exit function
  function die()
  {
    # output
    echo -e "Error in ${SCRIPT_PATH}:\n ${1}"

    # return state unknown
    exit ${STATE_UNKNOWN}
  }

  # Shows usage function.
  function fShowUsage()
  {
    echo -e "Usage: ${SCRIPT_PATH} -w <warning> -c <critical>\n
    -w = Minimum Number of days before expiration to activate a warning message.
    -c = Number of days before expiration to activate a critical message.\n\nVersion 2.0"
    exit ${STATE_UNKNOWN}
  }

  # The main function.
  function fMain()
  {
    # script o depends on:
    [ -x /opt/xensource/bin/xe ] || die "This script depends on /opt/xensource/bin/xe"

    # check for arguments:
    [ "${ARGS}" = 4 ] || fShowUsage

    # check for parameters
    [ "${PARM2}" = "-c" -o "${CRIT}" != "" ] || fShowUsage
    [ "${PARM1}" = "-h" -o "${WARN}" != "" ] || fShowUsage

    # validate output
    OUTPUT="$( ${XEN} )"
    ( echo "${OUTPUT}" | grep -q 'serialnumber' ) || die "Unexpected output from plugin!"

    EXPIRYDATE="$( echo -e "${OUTPUT}" | grep expiry | awk '{ print $2 }' | tr -d "Z" | awk -F"T" '{print $1}' )"
    EXTIME="$( echo -e "${OUTPUT}" | grep expiry | awk '{ print $2 }' | tr -d "Z" | awk -F"T" '{print $2}' )"
    TODAY="$( date +%Y%m%d )"
    TIMESTAMPTODAY="$( date +%s -d $TODAY )"
    DATEOFEXPIRE="$( date +%s -d $EXPIRYDATE )"
    SECONDSINDAY='86400'
    DAYDIFF="$( echo \($DATEOFEXPIRE -$TIMESTAMPTODAY\) / ${SECONDSINDAY} | bc )"
    INFO="${DAYDIFF} days are left to renew Xen License"


    # make results
    if   [ "${DAYDIFF}" -gt "${WARN}" ] ; then
         echo -e "OK \"${INFO}\""
         exit "${STATE_OK}"
    elif [ "${DAYDIFF}" -le "${WARN}" ] && [ "${DAYDIFF}" -gt "${CRIT}" ] ; then
         echo -e "WARNING - CITRIX license is about to expire - \"${WARN} < ${DAYDIFF}\" - \"${INFO}\""
         exit "${STATE_WARNING}"
    elif [ "${DAYDIFF}" -le "${WARN}" ] ; then
         echo -e "CRITICAL - CITRIX license is about to expire - \"${CRIT} < ${DAYDIFF}\" - \"${INFO}\""
         exit "${STATE_CRITICAL}"
    else
         echo -e "UNKNOWN - This nagiosplugin sucks bigtime! Results unknown - \"${INFO}\""
         exit "${STATE_UNKNOWN}"
    fi

  }

 # Start the program:
  fMain

 # Exit with previous return code:
  exit "${?}"