nagios_check_string_remote_script

#!/bin/bash
# flip hess mei 2012 [email protected]
# check string from remote script

# Variables

  PATH='/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin'
  SCRIPT_PATH="${0}"

  URL="https://example.com/check-this-or-that.asp"
  RCPTBACKUPFAILED="[email protected]"
  DATE="$(date)"

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

  STRING1="foo"
  STRING2="bar"
  STRING3="flippeh"

# Functions:

# mailer functie
function fMailer()
{
  cat <<EOF | mail -s "Waarschuwing: string check has failed" ${RCPTBACKUPFAILED}

    ########################################################################
    #                                                                      #
    #   BARK BARK BARK BARK BARK BARK BARK BARK BARK BARK BARK BARK BARK   #
    #                                                                      #
    ########################################################################

     ${DATE}

     The string checker @ nagios.example.com has received an error:

     Error was: ${ERROR}

     For questions, please contact:

     SysAdmins @ Example.com
     BOFHRoad 123
     yourtown
     admin@example.com

EOF
}


# The main function.
function fMain()
{
  # Check whether sufficient arguments are given:
  [ ${#} = 0 ] || { fShowUsage ; exit "${STATE_UNKNOWN}"; }

  # this script depends on wget
  [  -x /usr/bin/curl ] || { echo "This scripts depends on curl, install it by using \"sudo apt-get install curl\"" ; exit "${STATE_UNKNOWN}"; }

  # get info
  { curl -s "${URL}" > /tmp/check-string ;} || { echo "Failed to curl ${URL}." ; exit "${STATE_UNKNOWN}"; }

  # get status
  OUTPUT="$( cat /tmp/check-string )" || { echo "Failed to get output!" ; exit "${STATE_UNKNOWN}"; }

  # make results

  # STRING1
  if ( echo "${OUTPUT}" | grep -qi "${STRING1}" ) ; then
     # status okay
     echo -e "OKAY - status is ${OUTPUT}"
     exit "${STATE_OK}"

  # STRING2
  elif ( echo "${OUTPUT}" | grep -qi "${STRING2}" ); then
     ERROR="CRITICAL - string detected: \"${STRING2}\" - status is ${OUTPUT}"
     fMailer
     echo "${ERROR}"
     exit "${STATE_CITICAL}"

  # STRING3
  elif ( echo "${OUTPUT}" | grep -qi "${STRING3}" ); then
     echo -e "CRITICAL - string detected: \"${STRING3}\" - status is ${OUTPUT}"
     fMailer
     echo "${ERROR}"
     exit "${STATE_CITICAL}"

  # status unknown
  else
     ERROR="UNKNOWN - unknown string returned: ${OUTPUT}"
     fMailer
     echo "${ERROR}"
     exit "${STATE_UNKNOWN}"
  fi

}

# Shows usage.
function fShowUsage()
{
  echo "Usage: ${SCRIPT_PATH}"
  return 0
}


# Start the program:
fMain "${@}"

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