Subversion Repositories vnag

<?php /* <ViaThinkSoftSignature>

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</ViaThinkSoftSignature> */ ?>

<?php

/*

 * VNag - Nagios Framework for PHP

 * Developed by Daniel Marschall, ViaThinkSoft <www.viathinksoft.com>

 * Licensed under the terms of the Apache 2.0 license

 *

 * Revision 2023-10-13

 */

declare(ticks=1);

class GitLabVersionCheck extends VNag {

        protected $argSystemDir = null;

        public function __construct() {

                parent::__construct();

                $this->registerExpectedStandardArguments('Vvht');

                $this->getHelpManager()->setPluginName('check_gitlab_version');

                $this->getHelpManager()->setVersion('1.0');

                $this->getHelpManager()->setShortDescription('This plugin checks if a local GitLab system has the latest version installed.');

                $this->getHelpManager()->setCopyright('Copyright (C) 2011-$CURYEAR$ Daniel Marschall, ViaThinkSoft.');

                $this->getHelpManager()->setSyntax('$SCRIPTNAME$ [-d <directory>]');

                $this->getHelpManager()->setFootNotes('If you encounter bugs, please contact ViaThinkSoft at www.viathinksoft.com');

                // Individual (non-standard) arguments:

                $this->addExpectedArgument($this->argSystemDir = new VNagArgument('d', 'directory', VNagArgument::VALUE_REQUIRED, 'gitLabPath', 'The local directory where your GitLab installation (version-manifest.txt) is located.'));

        }

        protected function getInstalledVersion($dir) {

                $version_manifest = $dir.'/version-manifest.json';

                if (!file_exists($version_manifest)) {

                        throw new VNagException('This is not a valid GitLab installation in "'.$dir.'" (version-manifest.json is missing).');

                }

                $cont = @file_get_contents($version_manifest);

                if ($cont === false) {

                        throw new VNagException('Cannot read version-manifest.json from GitLab installation in "'.$dir.'".');

                }

                $json = @json_decode($cont,true);

                if ($json === false) {

                        throw new VNagException('This is not a valid GitLab installation in "'.$dir.'" (version-manifest.json has invalid JSON data).');

                }

                return $json['build_version'];

        }

        protected function getServerResponse($version) {

                $opts = array(

                  'http'=>array(

                    'method'=>"GET",

                    'header'=>"Referer: http://example.org/\r\n" // Important!!!

                  )

                );

                $context = stream_context_create($opts);

                $url = "https://version.gitlab.com/check.svg?gitlab_info=".

                       urlencode(base64_encode('{"version":"'.$version.'"}'));

                $cont = $this->url_get_contents($url, 1*60*60, $context);

                if ($cont === false) {

                        throw new VNagException('Cannot query version.gitlab.com for version check (Version '.$version.')');

                }

                if (!preg_match('@>([^<]+)</text>@ismU', $cont, $m)) {

                        throw new VNagException('Server version.gitlab.com sent an unexpected reply (Version '.$version.')');

                }

                return $m[1];

        }

        protected function cbRun($optional_args=array()) {

                $system_dir = $this->argSystemDir->getValue();

                if (empty($system_dir)) {

                        throw new VNagException("Please specify the directory of the GitLab installation.");

                }

                $system_dir = realpath($system_dir) === false ? $system_dir : realpath($system_dir);

                if (!is_dir($system_dir)) {

                        throw new VNagException('Directory "'.$system_dir.'" not found.');

                }

                $cur_ver = $this->getInstalledVersion($system_dir);

                $status = $this->getServerResponse($cur_ver);

                if ($status == 'up-to-date') {

                        $this->setStatus(VNag::STATUS_OK);

                } else if ($status == 'update available') {

                        $this->setStatus(VNag::STATUS_WARNING);

                } else if ($status == 'update asap') {

                        $this->setStatus(VNag::STATUS_CRITICAL);

                } else {

                        $this->setStatus(VNag::STATUS_UNKNOWN);

                }

                $this->setHeadline("GitLab currently installed version $cur_ver [$status] at $system_dir", true);

        }

}