159 lines
3.3 KiB
PHP
159 lines
3.3 KiB
PHP
<?php
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/**
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* @package FOF
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* @copyright Copyright (c)2010-2021 Nicholas K. Dionysopoulos / Akeeba Ltd
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* @license GNU General Public License version 2, or later
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*/
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namespace FOF30\Utils;
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defined('_JEXEC') || die;
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use Exception;
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use Joomla\CMS\Factory;
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use SimpleXMLElement;
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/**
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* Retrieve the version of a component from the cached XML manifest or, if it's not present, the version recorded in the
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* database.
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*/
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abstract class ComponentVersion
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{
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/**
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* A cache with the version numbers of components
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*
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* @var array
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*
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* @since 3.1.5
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*/
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private static $version = [];
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/**
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* Get a component's version. The XML manifest on disk will be tried first. If it's not there or does not have a
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* version string the manifest cache in the database is tried. If that fails a fake version number will be returned.
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*
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* @param string $component The name of the component, e.g. com_foobar
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*
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* @return string The version string
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*
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* @since 3.1.5
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*/
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public static function getFor($component)
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{
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if (!isset(self::$version[$component]))
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{
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self::$version[$component] = null;
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}
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if (is_null(self::$version[$component]))
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{
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self::$version[$component] = self::getVersionFromManifest($component);
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}
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if (is_null(self::$version[$component]))
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{
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self::$version[$component] = self::getVersionFromDatabase($component);
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}
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if (is_null(self::$version[$component]))
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{
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self::$version[$component] = 'dev-' . str_replace(' ', '_', microtime(false));
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}
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return self::$version[$component];
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}
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/**
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* Get a component's version from the manifest cache in the database
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*
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* @param string $component The component's name
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*
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* @return string The component version or null if none is defined
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*
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* @since 3.1.5
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*/
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private static function getVersionFromDatabase($component)
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{
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$db = Factory::getDbo();
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$query = $db->getQuery(true)
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->select($db->qn('manifest_cache'))
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->from($db->qn('#__extensions'))
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->where($db->qn('element') . ' = ' . $db->q($component))
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->where($db->qn('type') . ' = ' . $db->q('component'));
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try
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{
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$json = $db->setQuery($query)->loadResult();
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}
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catch (Exception $e)
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{
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return null;
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}
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if (empty($json))
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{
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return null;
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}
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$options = json_decode($json, true);
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if (empty($options))
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{
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return null;
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}
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if (!isset($options['version']))
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{
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return null;
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}
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return $options['version'];
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}
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/**
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* Get a component's version from the manifest file on disk. IMPORTANT! The manifest for com_something must be named
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* something.xml.
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*
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* @param string $component The component's name
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*
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* @return string The component version or null if none is defined
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*
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* @since 1.2.0
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*/
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private static function getVersionFromManifest($component)
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{
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$bareComponent = str_replace('com_', '', $component);
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$file = JPATH_ADMINISTRATOR . '/components/' . $component . '/' . $bareComponent . '.xml';
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if (!is_file($file) || !is_readable($file))
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{
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return null;
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}
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$data = @file_get_contents($file);
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if (empty($data))
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{
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return null;
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}
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try
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{
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$xml = new SimpleXMLElement($data, LIBXML_COMPACT | LIBXML_NONET | LIBXML_ERR_NONE);
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}
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catch (Exception $e)
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{
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return null;
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}
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$versionNode = $xml->xpath('/extension/version');
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if (empty($versionNode))
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{
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return null;
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}
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return (string) ($versionNode[0]);
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}
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}
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