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58 daniel-mar 1 
<?php
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/*
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 * VNag - Nagios Framework for PHP
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 * Developed by Daniel Marschall, ViaThinkSoft <www.viathinksoft.com>
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 * Licensed under the terms of the Apache 2.0 license
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 *
76 daniel-mar 8 
 * Revision 2023-10-13
58 daniel-mar 9 
 */
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declare(ticks=1);
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class WebSvnVersionCheck extends VNag {
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        protected $argSystemDir = null;
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        public function __construct() {
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                parent::__construct();
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                $this->registerExpectedStandardArguments('Vht');
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                $this->getHelpManager()->setPluginName('check_websvn_version');
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                $this->getHelpManager()->setVersion('2023-10-13');
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                $this->getHelpManager()->setShortDescription('This plugin checks if a local WebSVN system has the latest version installed.');
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                $this->getHelpManager()->setCopyright('Copyright (C) 2011-$CURYEAR$ Daniel Marschall, ViaThinkSoft.');
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                $this->getHelpManager()->setSyntax('$SCRIPTNAME$ [-d <directory>]');
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                $this->getHelpManager()->setFootNotes('If you encounter bugs, please contact ViaThinkSoft at www.viathinksoft.com');
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                // Individual (non-standard) arguments:
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                $this->addExpectedArgument($this->argSystemDir = new VNagArgument('d', 'directory', VNagArgument::VALUE_REQUIRED, 'websvnPath', 'The local directory where your WebSVN installation is located.'));
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        }
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        protected function get_local_version($path) {
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                $path = realpath($path) === false ? $path : realpath($path);
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                if (!file_exists("$path/include/version.php")) {
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                        throw new VNagException("Cannot find WebSVN settings file at $path");
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                }
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                $cont = @file_get_contents("$path/include/version.php");
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                if ($cont === false) {
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                        throw new VNagException("Cannot determine version for system $path (cannot read version.php)");
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                }
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                if (!preg_match('@\\$version = \'(.+)\';@ismU', $cont, $m)) {
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                        throw new VNagException("Cannot determine version for system $path (cannot find version string)");
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                }
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                return $m[1]; // e.g. "2.8.1" or "2.8.1-DEV"
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        }
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        protected function get_latest_version() {
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                $cont = $this->url_get_contents('https://api.github.com/repos/websvnphp/websvn/releases/latest');
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                if ($cont === false) {
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                        throw new VNagException('Cannot parse version from GitHub API. The plugin probably needs to be updated. (Cannot access api.github.com)');
58 daniel-mar 54 
                }
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                $data = @json_decode($cont, true);
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                if ($data === false) {
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                        throw new VNagException('Cannot parse version from GitHub API. The plugin probably needs to be updated. (Invalid JSON data downloaded from api.github.com)');
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                }
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                return $data['tag_name']; // e.g. "2.8.1"
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        }
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        protected function cbRun($optional_args=array()) {
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                $system_dir = $this->argSystemDir->getValue();
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                if (empty($system_dir)) {
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                        throw new VNagException("Please specify the directory of the WebSVN installation.");
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                }
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                $system_dir = realpath($system_dir) === false ? $system_dir : realpath($system_dir);
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                if (!is_dir($system_dir)) {
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                        throw new VNagException('Directory "'.$system_dir.'" not found.');
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                }
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                $local_version = $this->get_local_version($system_dir);
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                $latest_stable = $this->get_latest_version();
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                // Note: version_compare() correctly assumes that 2.8.1 is higher than 2.8.1-DEV
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                if (version_compare($local_version,$latest_stable,'>')) {
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                        $this->setStatus(VNag::STATUS_OK);
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                        $this->setHeadline("Version $local_version (Latest stable version $latest_stable) at $system_dir", true);
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                } else if (version_compare($local_version,$latest_stable,'=')) {
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                        $this->setStatus(VNag::STATUS_OK);
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                        $this->setHeadline("Version $local_version (Latest stable version) at $system_dir", true);
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                } else {
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                        $this->setStatus(VNag::STATUS_WARNING);
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                        $this->setHeadline("Version $local_version is outdated (Latest version is $latest_stable) at $system_dir", true);
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                }
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        }
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}