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  1. <?php /* <ViaThinkSoftSignature>
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  23. w==
  24. </ViaThinkSoftSignature> */ ?>
  25. <?php
  26.  
  27. /*
  28.  * VNag - Nagios Framework for PHP
  29.  * Developed by Daniel Marschall, ViaThinkSoft <www.viathinksoft.com>
  30.  * Licensed under the terms of the Apache 2.0 license
  31.  *
  32.  * Revision 2020-03-12
  33.  */
  34.  
  35. declare(ticks=1);
  36.  
  37. class PmWikiVersionCheck extends VNag {
  38.         protected $argSystemDir = null;
  39.  
  40.         public function __construct() {
  41.                 parent::__construct();
  42.  
  43.                 $this->registerExpectedStandardArguments('Vht');
  44.  
  45.                 $this->getHelpManager()->setPluginName('check_pmwiki_version');
  46.                 $this->getHelpManager()->setVersion('1.0');
  47.                 $this->getHelpManager()->setShortDescription('This plugin checks if a local PmWiki system has the latest version installed.');
  48.                 $this->getHelpManager()->setCopyright('Copyright (C) 2011-$CURYEAR$ Daniel Marschall, ViaThinkSoft.');
  49.                 $this->getHelpManager()->setSyntax('$SCRIPTNAME$ [-d <directory>]');
  50.                 $this->getHelpManager()->setFootNotes('If you encounter bugs, please contact ViaThinkSoft at www.viathinksoft.com');
  51.  
  52.                 // Individual (non-standard) arguments:
  53.                 $this->addExpectedArgument($this->argSystemDir = new VNagArgument('d', 'directory', VNagArgument::VALUE_REQUIRED, 'pmWikiPath', 'The local directory where PmWiki installation is located.'));
  54.         }
  55.  
  56.         protected function get_pmwiki_version($path) {
  57.                 $path = realpath($path) === false ? $path : realpath($path);
  58.  
  59.                 $c = @file_get_contents("$path/scripts/version.php");
  60.  
  61.                 if (!preg_match('@\\$Version="pmwiki-(.+)";@is', $c, $m)) {
  62.                         throw new Exception("Cannot find version information at $path");
  63.                 }
  64.  
  65.                 return $m[1];
  66.         }
  67.  
  68.         protected function get_latest_version() {
  69.                 $cont = @file_get_contents('https://www.pmwiki.org/wiki/PmWiki/Download');
  70.                 if (!$cont) {
  71.                         throw new Exception("Cannot access website with latest version");
  72.                 }
  73.  
  74.                 if (!preg_match('@Latest <em>stable</em> release \(pmwiki-(.+)<@ismU', $cont, $m)) {
  75.                         throw new Exception("Cannot find version information on the website");
  76.                 }
  77.  
  78.                 return $m[1];
  79.         }
  80.  
  81.         protected function cbRun($optional_args=array()) {
  82.                 $system_dir = $this->argSystemDir->getValue();
  83.                 if (empty($system_dir)) {
  84.                         throw new Exception("Please specify the directory of the PmWiki installation.");
  85.                 }
  86.                 $system_dir = realpath($system_dir) === false ? $system_dir : realpath($system_dir);
  87.  
  88.                 if (!is_dir($system_dir)) {
  89.                         throw new Exception('Directory "'.$system_dir.'" not found.');
  90.                 }
  91.  
  92.                 $version = $this->get_pmwiki_version($system_dir);
  93.  
  94.                 $latest_version = $this->get_latest_version();
  95.  
  96.                 // TODO: We should probably use version_compare() instead of string comparison
  97.                 if ($version == $latest_version) {
  98.                         $this->setStatus(VNag::STATUS_OK);
  99.                         $this->setHeadline("Version $version at $system_dir", true);
  100.                 } else {
  101.                         $this->setStatus(VNag::STATUS_WARNING);
  102.                         $this->setHeadline("Version $version is outdated (Latest version is $latest_version) at $system_dir", true);
  103.                 }
  104.         }
  105. }
  106.