nagios_check_phpmyadmin_version

#!/bin/bash
############################################################################################
# +--------------------------------------------------------------------------------------+ #
# |  Deze nagios check haalt met wget de release info op bij een ingevoerde url          | #
# |  en checked of deze nog gelijk is aan de current version op de phpmyadmin website    | #
# |                                                                                      | #
# |  flip hess 2011 05 04 [email protected]                                            | #
# +--------------------------------------------------------------------------------------+ #
############################################################################################

# Variables:

  PATH='/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin'

  SCRIPT_PATH="${0}"
  URL="${1}"

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

  # current version url
  VERSIONURL='http://phpmyadmin.net/home_page/version.php'



# Functions:

# The main function.
function fMain()
{
  # Check whether any arguments are given:
  if [ ${#} != 1 ]
  then
    fShowUsage
    exit "${STATE_UNKNOWN}"
  fi

  # check voor een resolvbare url door de http:// en alles na de 1e / te substitueren en de rest te resolven
  FQDN=$(echo ${URL} | sed -e 's/http\:\/\///' -e 's/\/.*$//')

  # resolv de mogelijke fqdn
  host -q ${FQDN} > /dev/null 2>&1

  # check exit code
  if [ ${?} != 0 ]
  then
     echo "${URL} is not resolvable!"
     exit "${STATE_UNKNOWN}"
  fi

  # check if url is expected format of phpmyadmin:
  lynx -dump -crawl -connect_timeout=2 -width=200 ${URL}  | grep -q 'phpMyAdmin is more friendly with a frames-capable browser'
  if [ ${?} != 0 ]
  then
    echo "Unexpected content string, No phpmyadmin found on ${URL}!"
    exit "${STATE_UNKNOWN}"
  fi

  # check for current releasedate on phpmyadmin website
  SINCE=$( lynx -dump -crawl -connect_timeout=2 -width=200 ${VERSIONURL} | sed 1d | grep -Ev '(^$|http://)' | tail -1 | tr -d "-")

  # check if SINCE consists of only dots and numbers:
  if [ -n "$(echo "${SINCE}" | tr -d "[:digit:]")" ] || [ -z "${SINCE}" ]
    then
       echo "Something went wrong gathering since version date information from phpmyadmin website"
       fShowUsage
       exit "${STATE_UNKNOWN}"
  fi

  # check for version number on phpmyadmin website:
  VERSION=$( lynx -dump -crawl -connect_timeout=2 -width=200 ${VERSIONURL} | sed 1d | grep -Ev '(^$|http://)' | head -1 )

  # check if VERSION consists of only numbers:
  if [ -n "$(echo "${VERSION}" | tr -d ".[:digit:]")" ] || [ -z "${VERSION}" ]
    then
       echo "Something went wrong gathering since version date information from phpmyadmin website"
       fShowUsage
       exit "${STATE_UNKNOWN}"
  fi

  # check for version on our phpmyadmin installation
  OURVERSION=$( lynx -dump -crawl -connect_timeout=2 -width=200 ${URL}/README |grep Version | sed -e 's/  Version //g')

  # check if OURVERSION consists of only dots and numbers:
  if [ -n "$(echo "${OURVERSION}" | tr -d ".[:digit:]")" ] || [ -z "${SINCE}" ]
    then
       echo "Something went wrong gathering since version date information from the provided url"
       fShowUsage
       exit "${STATE_UNKNOWN}"
  fi

  # make results
  if [ "${OURVERSION}" = "${VERSION}" ]
  then
     echo "OK - version ${OURVERSION} is the current phpmyadmin version"
     exit "${STATE_OK}"
  else
     echo "CRITICAL - There is a newer version of phpmyadmin present on http://phpmyadmin.net!"
     echo "We use version ${OURVERSION} but there is a newer version since ${SINCE}, version ${VERSION}"
     exit "${STATE_CRITICAL}"
  fi

  return "${?}"
}

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


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

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