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Eddy Prosperi
2024-12-17 17:34:10 +01:00
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350
libraries/fof40/JoomlaAbstraction/CacheCleaner.php Normal file
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<?php
/**
* @package FOF
* @copyright Copyright (c)2010-2022 Nicholas K. Dionysopoulos / Akeeba Ltd
* @license GNU General Public License version 3, or later
*/
namespace FOF40\JoomlaAbstraction;
defined('_JEXEC') || die;
use Exception;
use FOF40\Container\Container;
use Joomla\Application\AbstractApplication;
use Joomla\Application\ConfigurationAwareApplicationInterface;
use Joomla\CMS\Cache\Cache;
use Joomla\CMS\Cache\CacheControllerFactoryInterface;
use Joomla\CMS\Cache\Controller\CallbackController;
use Joomla\CMS\Cache\Exception\CacheExceptionInterface;
use Joomla\CMS\Factory;
use Joomla\CMS\MVC\Model\BaseDatabaseModel;
use Joomla\Registry\Registry;
use Throwable;
/**
* A utility class to help you quickly clean the Joomla! cache
*/
class CacheCleaner
{
/**
* Clears the com_modules and com_plugins cache. You need to call this whenever you alter the publish state or
* parameters of a module or plugin from your code.
*
* @return void
*/
public static function clearPluginsAndModulesCache()
{
self::clearPluginsCache();
self::clearModulesCache();
}
/**
* Clears the com_plugins cache. You need to call this whenever you alter the publish state or parameters of a
* plugin from your code.
*
* @return void
*/
public static function clearPluginsCache()
{
self::clearCacheGroups(['com_plugins'], [0, 1]);
}
/**
* Clears the com_modules cache. You need to call this whenever you alter the publish state or parameters of a
* module from your code.
*
* @return void
*/
public static function clearModulesCache()
{
self::clearCacheGroups(['com_modules'], [0, 1]);
}
/**
* Clears the specified cache groups.
*
* @param array $clearGroups Which cache groups to clear. Usually this is com_yourcomponent to clear
* your component's cache.
* @param array $cacheClients Which cache clients to clear. 0 is the back-end, 1 is the front-end. If you
* do not specify anything, both cache clients will be cleared.
* @param string|null $event An event to run upon trying to clear the cache. Empty string to disable. If
* NULL and the group is "com_content" I will trigger onContentCleanCache.
*
* @return void
* @throws Exception
*/
public static function clearCacheGroups(array $clearGroups, array $cacheClients = [
0, 1,
], ?string $event = null): void
{
// Early return on nonsensical input
if (empty($clearGroups) || empty($cacheClients))
{
return;
}
// Make sure I have an application object
try
{
$app = Factory::getApplication();
}
catch (Exception $e)
{
return;
}
// If there's no application object things will break; let's get outta here.
if (!is_object($app))
{
return;
}
$isJoomla4 = version_compare(JVERSION, '3.9999.9999', 'gt');
// Loop all groups to clean
foreach ($clearGroups as $group)
{
// Groups must be non-empty strings
if (empty($group) || !is_string($group))
{
continue;
}
// Loop all clients (applications)
foreach ($cacheClients as $client_id)
{
$client_id = (int) ($client_id ?? 0);
$options = $isJoomla4
? self::clearCacheGroupJoomla4($group, $client_id, $app)
: self::clearCacheGroupJoomla3($group, $client_id, $app);
// Do not call any events if I failed to clean the cache using the core Joomla API
if (!($options['result'] ?? false))
{
return;
}
/**
* If you're cleaning com_content and you have passed no event name I will use onContentCleanCache.
*/
if ($group === 'com_content')
{
$cacheCleaningEvent = $event ?: 'onContentCleanCache';
}
/**
* Call Joomla's cache cleaning plugin event (e.g. onContentCleanCache) as well.
*
* @see BaseDatabaseModel::cleanCache()
*/
if (empty($cacheCleaningEvent))
{
continue;
}
$fakeContainer = Container::getInstance('com_FOOBAR');
$fakeContainer->platform->runPlugins($cacheCleaningEvent, $options);
}
}
}
/**
* Clean a cache group on Joomla 3
*
* @param string $group The cache to clean, e.g. com_content
* @param int $client_id The application ID for which the cache will be cleaned
* @param object $app The current CMS application. DO NOT TYPEHINT MORE SPECIFICALLY!
*
* @return array Cache controller options, including cleaning result
* @throws Exception
*/
private static function clearCacheGroupJoomla3(string $group, int $client_id, object $app): array
{
$options = [
'defaultgroup' => $group,
'cachebase' => ($client_id) ? self::getAppConfigParam($app, 'cache_path', JPATH_SITE . '/cache') : JPATH_ADMINISTRATOR . '/cache',
'result' => true,
];
try
{
$cache = Cache::getInstance('callback', $options);
/** @noinspection PhpUndefinedMethodInspection Available via __call(), not tagged in Joomla core */
$cache->clean();
}
catch (Throwable $e)
{
$options['result'] = false;
}
return $options;
}
/**
* Clean a cache group on Joomla 4
*
* @param string $group The cache to clean, e.g. com_content
* @param int $client_id The application ID for which the cache will be cleaned
* @param object $app The current CMS application. DO NOT TYPEHINT MORE SPECIFICALLY!
*
* @return array Cache controller options, including cleaning result
* @throws Exception
*/
private static function clearCacheGroupJoomla4(string $group, int $client_id, object $app): array
{
// Get the default cache folder. Start by using the JPATH_CACHE constant.
$cacheBaseDefault = JPATH_CACHE;
$appClientId = 0;
if (method_exists($app, 'getClientId'))
{
$appClientId = $app->getClientId();
}
// -- If we are asked to clean cache on the other side of the application we need to find a new cache base
if ($client_id != $appClientId)
{
$cacheBaseDefault = (($client_id) ? JPATH_SITE : JPATH_ADMINISTRATOR) . '/cache';
}
// Get the cache controller's options
$options = [
'defaultgroup' => $group,
'cachebase' => self::getAppConfigParam($app, 'cache_path', $cacheBaseDefault),
'result' => true,
];
try
{
$container = Factory::getContainer();
if (empty($container))
{
throw new \RuntimeException('Cannot get Joomla 4 application container');
}
/** @var CacheControllerFactoryInterface $cacheControllerFactory */
$cacheControllerFactory = $container->get('cache.controller.factory');
if (empty($cacheControllerFactory))
{
throw new \RuntimeException('Cannot get Joomla 4 cache controller factory');
}
/** @var CallbackController $cache */
$cache = $cacheControllerFactory->createCacheController('callback', $options);
if (empty($cache) || !property_exists($cache, 'cache') || !method_exists($cache->cache, 'clean'))
{
throw new \RuntimeException('Cannot get Joomla 4 cache controller');
}
$cache->cache->clean();
}
catch (CacheExceptionInterface $exception)
{
$options['result'] = false;
}
catch (Throwable $e)
{
$options['result'] = false;
}
return $options;
}
private static function getAppConfigParam(?object $app, string $key, $default = null)
{
/**
* Any kind of Joomla CMS, Web, API or CLI application extends from AbstractApplication and has the get()
* method to return application configuration parameters.
*/
if (is_object($app) && ($app instanceof AbstractApplication))
{
return $app->get($key, $default);
}
/**
* A custom application may instead implement the Joomla\Application\ConfigurationAwareApplicationInterface
* interface (Joomla 4+), in whihc case it has the get() method to return application configuration parameters.
*/
if (is_object($app)
&& interface_exists('Joomla\Application\ConfigurationAwareApplicationInterface', true)
&& ($app instanceof ConfigurationAwareApplicationInterface))
{
return $app->get($key, $default);
}
/**
* A Joomla 3 custom application may simply implement the get() method without implementing an interface.
*/
if (is_object($app) && method_exists($app, 'get'))
{
return $app->get($key, $default);
}
/**
* At this point the $app variable is not an object or is something I can't use. Does the Joomla Factory still
* has the legacy static method getConfig() to get the application configuration? If so, use it.
*/
if (method_exists(Factory::class, 'getConfig'))
{
try
{
$jConfig = Factory::getConfig();
if (is_object($jConfig) && ($jConfig instanceof Registry))
{
$jConfig->get($key, $default);
}
}
catch (Throwable $e)
{
/**
* Factory tries to go through the application object. It might fail if there is a custom application
* which doesn't implement the interfaces Factory expects. In this case we get a Fatal Error whcih we
* can trap and fall through to the next if-block.
*/
}
}
/**
* When we are here all hope is nearly lost. We have to do a crude approximation of Joomla Factory's code to
* create an application configuration Registry object and retrieve the configuration values. This will work as
* long as the JConfig class (defined in configuration.php) has been loaded.
*/
$configPath = defined('JPATH_CONFIGURATION') ? JPATH_CONFIGURATION :
(defined('JPATH_ROOT') ? JPATH_ROOT : null);
$configPath = $configPath ?? (__DIR__ . '/../../..');
$configFile = $configPath . '/configuration.php';
if (!class_exists('JConfig') && @file_exists($configFile) && @is_file($configFile) && @is_readable($configFile))
{
require_once $configFile;
}
if (class_exists('JConfig'))
{
try
{
$jConfig = new Registry();
$configObject = new \JConfig();
$jConfig->loadObject($configObject);
return $jConfig->get($key, $default);
}
catch (Throwable $e)
{
return $default;
}
}
/**
* All hope is lost. I can't find the application configuration. I am returning the default value and hope stuff
* won't break spectacularly...
*/
return $default;
}
}

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libraries/fof40/JoomlaAbstraction/ComponentVersion.php Normal file
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<?php
/**
* @package FOF
* @copyright Copyright (c)2010-2022 Nicholas K. Dionysopoulos / Akeeba Ltd
* @license GNU General Public License version 3, or later
*/
namespace FOF40\JoomlaAbstraction;
defined('_JEXEC') || die;
use Exception;
use Joomla\CMS\Factory as JoomlaFactory;
use SimpleXMLElement;
/**
* Retrieve the version of a component from the cached XML manifest or, if it's not present, the version recorded in the
* database.
*/
abstract class ComponentVersion
{
/**
* A cache with the version numbers of components
*
* @var array
*
* @since 3.1.5
*/
private static $version = array();
/**
* Get a component's version. The XML manifest on disk will be tried first. If it's not there or does not have a
* version string the manifest cache in the database is tried. If that fails a fake version number will be returned.
*
* @param string $component The name of the component, e.g. com_foobar
*
* @return string The version string
*
* @since 3.1.5
*/
public static function getFor(string $component): string
{
if (!isset(self::$version[$component]))
{
self::$version[$component] = null;
}
if (is_null(self::$version[$component]))
{
self::$version[$component] = self::getVersionFromManifest($component);
}
if (is_null(self::$version[$component]))
{
self::$version[$component] = self::getVersionFromDatabase($component);
}
if (is_null(self::$version[$component]))
{
self::$version[$component] = 'dev-' . str_replace(' ', '_', microtime(false));
}
return self::$version[$component];
}
/**
* Get a component's version from the manifest cache in the database
*
* @param string $component The component's bname
*
* @return string|null The component version or null if none is defined
*
* @since 3.1.5
*/
private static function getVersionFromDatabase(string $component): ?string
{
$db = JoomlaFactory::getDbo();
$query = $db->getQuery(true)
->select($db->qn('manifest_cache'))
->from($db->qn('#__extensions'))
->where($db->qn('element') . ' = ' . $db->q($component))
->where($db->qn('type') . ' = ' . $db->q('component'));
try
{
$json = $db->setQuery($query)->loadResult();
}
catch (Exception $e)
{
return null;
}
if (empty($json))
{
return null;
}
$options = json_decode($json, true);
if (empty($options))
{
return null;
}
if (!isset($options['version']))
{
return null;
}
return $options['version'];
}
/**
* Get a component's version from the manifest file on disk. IMPORTANT! The manifest for com_something must be named
* something.xml.
*
* @param string $component The component's bname
*
* @return string The component version or null if none is defined
*
* @since 1.2.0
*/
private static function getVersionFromManifest(string $component): ?string
{
$bareComponent = str_replace('com_', '', $component);
$file = JPATH_ADMINISTRATOR . '/components/' . $component . '/' . $bareComponent . '.xml';
if (!is_file($file) || !is_readable($file))
{
return null;
}
$data = @file_get_contents($file);
if (empty($data))
{
return null;
}
try
{
$xml = new SimpleXMLElement($data, LIBXML_COMPACT | LIBXML_NONET | LIBXML_ERR_NONE);
}
catch (Exception $e)
{
return null;
}
$versionNode = $xml->xpath('/extension/version');
if (empty($versionNode))
{
return null;
}
return (string)($versionNode[0]);
}
}

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libraries/fof40/JoomlaAbstraction/DynamicGroups.php Normal file
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<?php
/**
* @package FOF
* @copyright Copyright (c)2010-2022 Nicholas K. Dionysopoulos / Akeeba Ltd
* @license GNU General Public License version 3, or later
*/
namespace FOF40\JoomlaAbstraction;
defined('_JEXEC') || die;
use FOF40\Container\Container;
/**
* Dynamic user to user group assignment.
*
* This class allows you to add / remove the currently logged in user to a user group without writing the information to
* the database. This is useful when you want to allow core and third party code to allow or prohibit display of
* information and / or taking actions based on a condition controlled in your code.
*/
class DynamicGroups
{
/**
* Add the current user to a user group just for this page load.
*
* @param int $groupID The group ID to add the current user into.
*
* @return void
*/
public static function addGroup(int $groupID): void
{
self::addRemoveGroup($groupID, true);
self::cleanUpUserObjectCache();
}
/**
* Remove the current user from a user group just for this page load.
*
* @param int $groupID The group ID to remove the current user from.
*
* @return void
*/
public static function removeGroup(int $groupID): void
{
self::addRemoveGroup($groupID, false);
self::cleanUpUserObjectCache();
}
/**
* Internal function to add or remove the current user from a user group just for this page load.
*
* @param int $groupID The group ID to add / remove the current user from.
* @param bool $add Add (true) or remove (false) the user?
*
* @return void
*/
protected static function addRemoveGroup(int $groupID, bool $add): void
{
// Get a fake container (we need it for its platform interface)
$container = Container::getInstance('com_FOOBAR');
/**
* Make sure that Joomla has retrieved the user's groups from the database.
*
* By going through the User object's getAuthorisedGroups we force Joomla to go through Access::getGroupsByUser
* which retrieves the information from the database and caches it into the Access helper class.
*/
$container->platform->getUser()->getAuthorisedGroups();
$container->platform->getUser($container->platform->getUser()->id)->getAuthorisedGroups();
/**
* Now we can get a Reflection object into Joomla's Access helper class and manipulate its groupsByUser cache.
*/
$className = 'Joomla\\CMS\\Access\\Access';
try
{
$reflectedAccess = new \ReflectionClass($className);
}
catch (\ReflectionException $e)
{
// This should never happen!
$container->platform->logDebug('Cannot locate the Joomla\\CMS\\Access\\Access class. Is your Joomla installation broken or too old / too new?');
return;
}
$groupsByUser = $reflectedAccess->getProperty('groupsByUser');
$groupsByUser->setAccessible(true);
$rawGroupsByUser = $groupsByUser->getValue();
/**
* Next up, we need to manipulate the keys of the cache which contain user to user group assignments.
*
* $rawGroupsByUser (Access::$groupsByUser) stored the group ownership as userID:recursive e.g. 0:1 for the
* default user, recursive. We need to deal with four keys: 0:1, 0:0, myID:1 and myID:0
*/
$user = $container->platform->getUser();
$keys = ['0:1', '0:0', $user->id . ':1', $user->id . ':0'];
foreach ($keys as $key)
{
if (!array_key_exists($key, $rawGroupsByUser))
{
continue;
}
$groups = $rawGroupsByUser[$key];
if ($add)
{
if (in_array($groupID, $groups))
{
continue;
}
$groups[] = $groupID;
}
else
{
if (!in_array($groupID, $groups))
{
continue;
}
$removeKey = array_search($groupID, $groups);
unset($groups[$removeKey]);
}
$rawGroupsByUser[$key] = $groups;
}
// We can commit our changes back to the cache property and make it publicly inaccessible again.
$groupsByUser->setValue(null, $rawGroupsByUser);
$groupsByUser->setAccessible(false);
/**
* We are not done. Caching user groups is only one aspect of Joomla access management. Joomla also caches the
* identities, i.e. the user group assignment per user, in a different cache. We need to reset it to for our
* user.
*
* Do note that we CAN NOT use clearStatics since that also clears the user group assignment which we assigned
* dynamically. Therefore calling it would destroy our work so far.
*/
$refProperty = $reflectedAccess->getProperty('identities');
$refProperty->setAccessible(true);
$identities = $refProperty->getValue();
$keys = array($user->id, 0);
foreach ($keys as $key)
{
if (!array_key_exists($key, $identities))
{
continue;
}
unset($identities[$key]);
}
$refProperty->setValue(null, $identities);
$refProperty->setAccessible(false);
}
/**
* Clean up the current user's authenticated groups cache.
*
* @return void
*/
protected static function cleanUpUserObjectCache(): void
{
// Get a fake container (we need it for its platform interface)
$container = Container::getInstance('com_FOOBAR');
$user = $container->platform->getUser();
$reflectedUser = new \ReflectionObject($user);
// Clear the user group cache
$refProperty = $reflectedUser->getProperty('_authGroups');
$refProperty->setAccessible(true);
$refProperty->setValue($user, array());
$refProperty->setAccessible(false);
// Clear the view access level cache
$refProperty = $reflectedUser->getProperty('_authLevels');
$refProperty->setAccessible(true);
$refProperty->setValue($user, array());
$refProperty->setAccessible(false);
// Clear the authenticated actions cache. I haven't seen it used anywhere but it's there, so...
$refProperty = $reflectedUser->getProperty('_authActions');
$refProperty->setAccessible(true);
$refProperty->setValue($user, array());
$refProperty->setAccessible(false);
}
}