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  1. <?php
  2.  
  3. /*
  4.  * VNag - Nagios Framework for PHP
  5.  * Developed by Daniel Marschall, ViaThinkSoft <www.viathinksoft.com>
  6.  * Licensed under the terms of the Apache 2.0 license
  7.  *
  8.  * Revision 2023-10-13
  9.  */
  10.  
  11. declare(ticks=1);
  12.  
  13. class WordPressVersionCheck extends VNag {
  14.         protected $argSystemDir = null;
  15.  
  16.         public function __construct() {
  17.                 parent::__construct();
  18.  
  19.                 $this->registerExpectedStandardArguments('Vht');
  20.  
  21.                 $this->getHelpManager()->setPluginName('check_wordpress_version');
  22.                 $this->getHelpManager()->setVersion('2023-10-13');
  23.                 $this->getHelpManager()->setShortDescription('This plugin checks if a local WordPress Webmail system has the latest version installed.');
  24.                 $this->getHelpManager()->setCopyright('Copyright (C) 2011-$CURYEAR$ Daniel Marschall, ViaThinkSoft.');
  25.                 $this->getHelpManager()->setSyntax('$SCRIPTNAME$ [-d <directory>]');
  26.                 $this->getHelpManager()->setFootNotes('If you encounter bugs, please contact ViaThinkSoft at www.viathinksoft.com');
  27.  
  28.                 // Individual (non-standard) arguments:
  29.                 $this->addExpectedArgument($this->argSystemDir = new VNagArgument('d', 'directory', VNagArgument::VALUE_REQUIRED, 'wordpressPath', 'The local directory where WordPress installation is located.'));
  30.         }
  31.  
  32.         protected function get_local_version($path) {
  33.                 $path = realpath($path) === false ? $path : realpath($path);
  34.  
  35.                 $cont = @file_get_contents("$path/wp-includes/version.php");
  36.                 if ($cont === false) {
  37.                         throw new VNagException("Cannot find version information at $path (cannot read version.php)");
  38.                 }
  39.                 if (!preg_match('@\$wp_version = \'(.+)\';@ismU', $cont, $m)) {
  40.                         throw new VNagException("Cannot find version information at $path (cannot find version string)");
  41.                 }
  42.  
  43.                 return $m[1];
  44.         }
  45.  
  46.         protected function get_latest_version() {
  47.                 $cont = $this->url_get_contents('https://wordpress.org/download/');
  48.                 if ($cont === false) {
  49.                         throw new VNagException("Cannot access website with latest version");
  50.                 }
  51.  
  52.                 if (!preg_match('@Download WordPress ([0-9\.]+)@ism', $cont, $m)) {
  53.                         throw new VNagException("Cannot find version information on the website");
  54.                 }
  55.  
  56.                 return trim($m[1]);
  57.         }
  58.  
  59.         protected function cbRun($optional_args=array()) {
  60.                 $system_dir = $this->argSystemDir->getValue();
  61.                 if (empty($system_dir)) {
  62.                         throw new VNagException("Please specify the directory of the WordPress installation.");
  63.                 }
  64.                 $system_dir = realpath($system_dir) === false ? $system_dir : realpath($system_dir);
  65.  
  66.                 if (!is_dir($system_dir)) {
  67.                         throw new VNagException('Directory "'.$system_dir.'" not found.');
  68.                 }
  69.  
  70.                 $version = $this->get_local_version($system_dir);
  71.  
  72.                 $latest_version = $this->get_latest_version();
  73.  
  74.                 if (version_compare($version,$latest_version) >= 0) {
  75.                         $this->setStatus(VNag::STATUS_OK);
  76.                         $this->setHeadline("Version $version at $system_dir", true);
  77.                 } else {
  78.                         $this->setStatus(VNag::STATUS_WARNING);
  79.                         $this->setHeadline("Version $version is outdated (Latest version is $latest_version) at $system_dir", true);
  80.                 }
  81.         }
  82. }
  83.