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<?php /** * Joomla! Content Management System * * @copyright (C) 2014 Open Source Matters, Inc. <https://www.joomla.org> * @license GNU General Public License version 2 or later; see LICENSE.txt */ namespace Joomla\CMS\Installer; \defined('JPATH_PLATFORM') or die; use Joomla\CMS\Factory; use Joomla\CMS\Filesystem\Folder; use Joomla\CMS\Filter\InputFilter; use Joomla\CMS\Installer\Manifest\PackageManifest; use Joomla\CMS\Language\Text; use Joomla\CMS\Log\Log; use Joomla\CMS\Table\Extension; use Joomla\CMS\Table\Table; use Joomla\CMS\Table\TableInterface; use Joomla\Database\DatabaseDriver; /** * Abstract adapter for the installer. * * @since 3.4 */ abstract class InstallerAdapter { /** * Changelog URL of extensions * * @var string * @since 4.0.0 * */ protected $changelogurl = null; /** * ID for the currently installed extension if present * * @var integer * @since 3.4 */ protected $currentExtensionId = null; /** * The unique identifier for the extension (e.g. mod_login) * * @var string * @since 3.4 * */ protected $element = null; /** * Extension object. * * @var Extension * @since 3.4 * */ protected $extension = null; /** * Messages rendered by custom scripts * * @var string * @since 3.4 */ protected $extensionMessage = ''; /** * Copy of the XML manifest file. * * Making this object public allows extensions to customize the manifest in custom scripts. * * @var \SimpleXMLElement * @since 3.4 */ public $manifest = null; /** * A path to the PHP file that the scriptfile declaration in the manifest refers to. * * @var string * @since 3.4 */ protected $manifest_script = null; /** * Name of the extension * * @var string * @since 3.4 */ protected $name = null; /** * Installer used with this adapter * * @var Installer * @since 4.0.0 */ protected $parent = null; /** * Install function routing * * @var string * @since 3.4 */ protected $route = 'install'; /** * Flag if the adapter supports discover installs * * Adapters should override this and set to false if discover install is unsupported * * @var boolean * @since 3.4 */ protected $supportsDiscoverInstall = true; /** * The type of adapter in use * * @var string * @since 3.4 */ protected $type; /** * Constructor * * @param Installer $parent Parent object * @param DatabaseDriver $db Database object * @param array $options Configuration Options * * @since 3.4 */ public function __construct(Installer $parent, DatabaseDriver $db, array $options = array()) { $this->parent = $parent; $this->db = $db; foreach ($options as $key => $value) { if (property_exists($this, $key)) { $this->$key = $value; } } // Get a generic TableExtension instance for use if not already loaded if (!($this->extension instanceof TableInterface)) { $this->extension = Table::getInstance('extension'); } // Sanity check, make sure the type is set by taking the adapter name from the class name if (!$this->type) { // This assumes the adapter short class name in its namespace is `<foo>Adapter`, replace this logic in subclasses if needed $reflection = new \ReflectionClass(\get_called_class()); $this->type = str_replace('Adapter', '', $reflection->getShortName()); } // Extension type is stored as lowercase in the database $this->type = strtolower($this->type); } /** * Check if a package extension allows its child extensions to be uninstalled individually * * @param integer $packageId The extension ID of the package to check * * @return boolean * * @since 3.7.0 * @note This method defaults to true to emulate the behavior of 3.6 and earlier which did not support this lookup */ protected function canUninstallPackageChild($packageId) { $package = Table::getInstance('extension'); // If we can't load this package ID, we have a corrupt database if (!$package->load((int) $packageId)) { return true; } $manifestFile = JPATH_MANIFESTS . '/packages/' . $package->element . '.xml'; $xml = $this->parent->isManifest($manifestFile); // If the manifest doesn't exist, we've got some major issues if (!$xml) { return true; } $manifest = new PackageManifest($manifestFile); return $manifest->blockChildUninstall === false; } /** * Method to check if the extension is already present in the database * * @return void * * @since 3.4 * @throws \RuntimeException */ protected function checkExistingExtension() { try { $this->currentExtensionId = $this->extension->find( array('element' => $this->element, 'type' => $this->type) ); // If it does exist, load it if ($this->currentExtensionId) { $this->extension->load(array('element' => $this->element, 'type' => $this->type)); } } catch (\RuntimeException $e) { // Install failed, roll back changes throw new \RuntimeException( Text::sprintf( 'JLIB_INSTALLER_ABORT_ROLLBACK', Text::_('JLIB_INSTALLER_' . $this->route), $e->getMessage() ), $e->getCode(), $e ); } } /** * Method to check if the extension is present in the filesystem, flags the route as update if so * * @return void * * @since 3.4 * @throws \RuntimeException */ protected function checkExtensionInFilesystem() { if (file_exists($this->parent->getPath('extension_root')) && (!$this->parent->isOverwrite() || $this->parent->isUpgrade())) { // Look for an update function or update tag $updateElement = $this->getManifest()->update; // Upgrade manually set or update function available or update tag detected if ($updateElement || $this->parent->isUpgrade() || ($this->parent->manifestClass && method_exists($this->parent->manifestClass, 'update'))) { // Force this one $this->parent->setOverwrite(true); $this->parent->setUpgrade(true); if ($this->currentExtensionId) { // If there is a matching extension mark this as an update $this->setRoute('update'); } } elseif (!$this->parent->isOverwrite()) { // We didn't have overwrite set, find an update function or find an update tag so lets call it safe throw new \RuntimeException( Text::sprintf( 'JLIB_INSTALLER_ABORT_DIRECTORY', Text::_('JLIB_INSTALLER_' . $this->route), $this->type, $this->parent->getPath('extension_root') ) ); } } } /** * Method to copy the extension's base files from the `<files>` tag(s) and the manifest file * * @return void * * @since 3.4 * @throws \RuntimeException */ abstract protected function copyBaseFiles(); /** * Method to create the extension root path if necessary * * @return void * * @since 3.4 * @throws \RuntimeException */ protected function createExtensionRoot() { // If the extension directory does not exist, lets create it $created = false; if (!file_exists($this->parent->getPath('extension_root'))) { if (!$created = Folder::create($this->parent->getPath('extension_root'))) { throw new \RuntimeException( Text::sprintf( 'JLIB_INSTALLER_ABORT_CREATE_DIRECTORY', Text::_('JLIB_INSTALLER_' . $this->route), $this->parent->getPath('extension_root') ) ); } } /* * Since we created the extension directory and will want to remove it if * we have to roll back the installation, let's add it to the * installation step stack */ if ($created) { $this->parent->pushStep( array( 'type' => 'folder', 'path' => $this->parent->getPath('extension_root'), ) ); } } /** * Generic discover_install method for extensions * * @return boolean True on success * * @since 3.4 */ public function discover_install() { // Get the extension's description $description = (string) $this->getManifest()->description; if ($description) { $this->parent->message = Text::_($description); } else { $this->parent->message = ''; } // Set the extension's name and element $this->name = $this->getName(); $this->element = $this->getElement(); /* * --------------------------------------------------------------------------------------------- * Extension Precheck and Setup Section * --------------------------------------------------------------------------------------------- */ // Setup the install paths and perform other prechecks as necessary try { $this->setupInstallPaths(); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } /* * --------------------------------------------------------------------------------------------- * Installer Trigger Loading * --------------------------------------------------------------------------------------------- */ $this->setupScriptfile(); try { $this->triggerManifestScript('preflight'); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } /* * --------------------------------------------------------------------------------------------- * Database Processing Section * --------------------------------------------------------------------------------------------- */ try { $this->storeExtension(); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } try { $this->parseQueries(); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } // Run the custom install method try { $this->triggerManifestScript('install'); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } /* * --------------------------------------------------------------------------------------------- * Finalization and Cleanup Section * --------------------------------------------------------------------------------------------- */ try { $this->finaliseInstall(); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } // And now we run the postflight try { $this->triggerManifestScript('postflight'); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } return $this->extension->extension_id; } /** * Method to handle database transactions for the installer * * @return boolean True on success * * @since 3.4 * @throws \RuntimeException */ protected function doDatabaseTransactions() { $route = $this->route === 'discover_install' ? 'install' : $this->route; // Let's run the install queries for the component if (isset($this->getManifest()->{$route}->sql)) { $result = $this->parent->parseSQLFiles($this->getManifest()->{$route}->sql); if ($result === false) { // Only rollback if installing if ($route === 'install') { throw new \RuntimeException(Text::_('JLIB_INSTALLER_ABORT_INSTALL_ABORTED')); } return false; } // If installing with success and there is an uninstall script, add an installer rollback step to rollback if needed if ($route === 'install' && isset($this->getManifest()->uninstall->sql)) { $this->parent->pushStep(array('type' => 'query', 'script' => $this->getManifest()->uninstall->sql)); } } return true; } /** * Load language files * * @param string $extension The name of the extension * @param string $source Path to the extension * @param string $base Base path for the extension language * * @return void * * @since 3.4 */ protected function doLoadLanguage($extension, $source, $base = JPATH_ADMINISTRATOR) { $lang = Factory::getLanguage(); $lang->load($extension . '.sys', $source) || $lang->load($extension . '.sys', $base); } /** * Method to finalise the installation processing * * @return void * * @since 4.0.0 * @throws \RuntimeException */ abstract protected function finaliseInstall(); /** * Method to finalise the uninstallation processing * * @return boolean * * @since 4.0.0 * @throws \RuntimeException */ abstract protected function finaliseUninstall(): bool; /** * Checks if the adapter supports discover_install * * @return boolean * * @since 3.4 */ public function getDiscoverInstallSupported() { return $this->supportsDiscoverInstall; } /** * Get the filtered extension element from the manifest * * @param string $element Optional element name to be converted * * @return string The filtered element * * @since 3.4 */ public function getElement($element = null) { if (!$element) { // Ensure the element is a string $element = (string) $this->getManifest()->element; } if (!$element) { $element = $this->getName(); } // Filter the name for illegal characters return strtolower(InputFilter::getInstance()->clean($element, 'cmd')); } /** * Get the manifest object. * * @return \SimpleXMLElement Manifest object * * @since 3.4 */ public function getManifest() { return $this->manifest; } /** * Get the filtered component name from the manifest * * @return string The filtered name * * @since 3.4 */ public function getName() { // Ensure the name is a string $name = (string) $this->getManifest()->name; // Filter the name for illegal characters $name = InputFilter::getInstance()->clean($name, 'string'); return $name; } /** * Retrieves the parent installer * * @return Installer * * @since 4.0.0 */ public function getParent() { return $this->parent; } /** * Get the install route being followed * * @return string The install route * * @since 3.4 */ public function getRoute() { return $this->route; } /** * Get the class name for the install adapter script. * * @return string The class name. * * @since 3.4 */ protected function getScriptClassName() { // Support element names like 'en-GB' $className = InputFilter::getInstance()->clean($this->element, 'cmd') . 'InstallerScript'; // Cannot have - in class names $className = str_replace('-', '', $className); return $className; } /** * Generic install method for extensions * * @return boolean|integer The extension ID on success, boolean false on failure * * @since 3.4 */ public function install() { // Get the extension's description $description = (string) $this->getManifest()->description; $this->parent->message = ''; if ($description) { $this->parent->message = Text::_($description); } // Set the extension's name and element $this->name = $this->getName(); $this->element = $this->getElement(); $this->changelogurl = (string) $this->getManifest()->changelogurl; /* * --------------------------------------------------------------------------------------------- * Extension Precheck and Setup Section * --------------------------------------------------------------------------------------------- */ // Setup the install paths and perform other prechecks as necessary try { $this->setupInstallPaths(); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } // Check to see if an extension by the same name is already installed. try { $this->checkExistingExtension(); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } // Check if the extension is present in the filesystem try { $this->checkExtensionInFilesystem(); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } // If we are on the update route, run any custom setup routines if ($this->route === 'update') { try { $this->setupUpdates(); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } } /* * --------------------------------------------------------------------------------------------- * Installer Trigger Loading * --------------------------------------------------------------------------------------------- */ $this->setupScriptfile(); try { $this->triggerManifestScript('preflight'); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } /* * --------------------------------------------------------------------------------------------- * Filesystem Processing Section * --------------------------------------------------------------------------------------------- */ // If the extension directory does not exist, lets create it try { $this->createExtensionRoot(); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } // Copy all necessary files try { $this->copyBaseFiles(); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } // Parse optional tags $this->parseOptionalTags(); /* * --------------------------------------------------------------------------------------------- * Database Processing Section * --------------------------------------------------------------------------------------------- */ try { $this->storeExtension(); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } try { $this->parseQueries(); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } // Run the custom method based on the route try { $this->triggerManifestScript($this->route); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } /* * --------------------------------------------------------------------------------------------- * Finalization and Cleanup Section * --------------------------------------------------------------------------------------------- */ try { $this->finaliseInstall(); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } // And now we run the postflight try { $this->triggerManifestScript('postflight'); } catch (\RuntimeException $e) { // Install failed, roll back changes $this->parent->abort($e->getMessage()); return false; } return $this->extension->extension_id; } /** * Method to parse the queries specified in the `<sql>` tags * * @return void * * @since 3.4 * @throws \RuntimeException */ protected function parseQueries() { // Let's run the queries for the extension if (\in_array($this->route, array('install', 'discover_install', 'uninstall'))) { // This method may throw an exception, but it is caught by the parent caller if (!$this->doDatabaseTransactions()) { throw new \RuntimeException(Text::_('JLIB_INSTALLER_ABORT_INSTALL_ABORTED')); } // Set the schema version to be the latest update version if ($this->getManifest()->update) { $this->parent->setSchemaVersion($this->getManifest()->update->schemas, $this->extension->extension_id); } } elseif ($this->route === 'update') { if ($this->getManifest()->update) { $result = $this->parent->parseSchemaUpdates($this->getManifest()->update->schemas, $this->extension->extension_id); if ($result === false) { // Install failed, rollback changes throw new \RuntimeException(Text::_('JLIB_INSTALLER_ABORT_INSTALL_ABORTED')); } } } } /** * Method to parse optional tags in the manifest * * @return void * * @since 3.1 */ protected function parseOptionalTags() { // Some extensions may not have optional tags } /** * Prepares the adapter for a discover_install task * * @return void * * @since 3.4 */ public function prepareDiscoverInstall() { // Adapters may not support discover install or may have overridden the default task and aren't using this } /** * Removes this extension's files * * @return void * * @since 4.0.0 * @throws \RuntimeException */ abstract protected function removeExtensionFiles(); /** * Set the manifest object. * * @param object $manifest The manifest object * * @return InstallerAdapter Instance of this class to support chaining * * @since 3.4 */ public function setManifest($manifest) { $this->manifest = $manifest; return $this; } /** * Set the install route being followed * * @param string $route The install route being followed * * @return InstallerAdapter Instance of this class to support chaining * * @since 3.4 */ public function setRoute($route) { $this->route = $route; return $this; } /** * Method to do any prechecks and setup the install paths for the extension * * @return void * * @since 3.4 */ abstract protected function setupInstallPaths(); /** * Setup the manifest script file for those adapters that use it. * * @return void * * @since 3.4 */ protected function setupScriptfile() { // If there is a manifest class file, lets load it; we'll copy it later (don't have dest yet) $manifestScript = (string) $this->getManifest()->scriptfile; if ($manifestScript) { $manifestScriptFile = $this->parent->getPath('source') . '/' . $manifestScript; $classname = $this->getScriptClassName(); \JLoader::register($classname, $manifestScriptFile); if (class_exists($classname)) { // Create a new instance $this->parent->manifestClass = new $classname($this); // And set this so we can copy it later $this->manifest_script = $manifestScript; } } } /** * Method to do any prechecks and setup the uninstall job * * @return void * * @since 4.0.0 */ abstract protected function setupUninstall(); /** * Method to setup the update routine for the adapter * * @return void * * @since 3.4 */ protected function setupUpdates() { // Some extensions may not have custom setup routines for updates } /** * Method to store the extension to the database * * @return void * * @since 3.4 * @throws \RuntimeException */ abstract protected function storeExtension(); /** * Executes a custom install script method * * @param string $method The install method to execute * * @return boolean True on success * * @since 3.4 * @throws \RuntimeException */ protected function triggerManifestScript($method) { ob_start(); ob_implicit_flush(false); if ($this->parent->manifestClass && method_exists($this->parent->manifestClass, $method)) { switch ($method) { // The preflight and postflight take the route as a param case 'preflight' : case 'postflight' : if ($this->parent->manifestClass->$method($this->route, $this) === false) { if ($method !== 'postflight') { // Clean and close the output buffer ob_end_clean(); // The script failed, rollback changes throw new \RuntimeException( Text::sprintf( 'JLIB_INSTALLER_ABORT_INSTALL_CUSTOM_INSTALL_FAILURE', Text::_('JLIB_INSTALLER_' . $this->route) ) ); } } break; // The install, uninstall, and update methods only pass this object as a param case 'install' : case 'uninstall' : case 'update' : if ($this->parent->manifestClass->$method($this) === false) { if ($method !== 'uninstall') { // Clean and close the output buffer ob_end_clean(); // The script failed, rollback changes throw new \RuntimeException( Text::sprintf( 'JLIB_INSTALLER_ABORT_INSTALL_CUSTOM_INSTALL_FAILURE', Text::_('JLIB_INSTALLER_' . $this->route) ) ); } } break; } } // Append to the message object $this->extensionMessage .= ob_get_clean(); // If in postflight or uninstall, set the message for display if (($method === 'uninstall' || $method === 'postflight') && $this->extensionMessage !== '') { $this->parent->set('extension_message', $this->extensionMessage); } return true; } /** * Generic update method for extensions * * @param integer $id The extension ID * * @return boolean True on success * * @since 4.0.0 */ public function uninstall($id) { if (!$this->extension->load((int) $id)) { Log::add(Text::_('JLIB_INSTALLER_ERROR_UNKNOWN_EXTENSION'), Log::WARNING, 'jerror'); return false; } // Joomla 4: Locked extensions cannot be removed. if (isset($this->extension->locked) && $this->extension->locked) { Log::add(Text::_('JLIB_INSTALLER_ERROR_UNINSTALL_LOCKED_EXTENSION'), Log::WARNING, 'jerror'); return false; } // Joomla 3 ('locked' property does not exist yet): Protected extensions cannot be removed. elseif (!isset($this->extension->locked) && $this->extension->protected) { Log::add(Text::_('JLIB_INSTALLER_ERROR_UNINSTALL_PROTECTED_EXTENSION'), Log::WARNING, 'jerror'); return false; } /* * Does this extension have a parent package? * If so, check if the package disallows individual extensions being uninstalled if the package is not being uninstalled */ if ($this->extension->package_id && !$this->parent->isPackageUninstall() && !$this->canUninstallPackageChild($this->extension->package_id)) { Log::add( Text::sprintf('JLIB_INSTALLER_ERROR_CANNOT_UNINSTALL_CHILD_OF_PACKAGE', $this->extension->name), Log::WARNING, 'jerror' ); return false; } // Setup the uninstall job as required try { $this->setupUninstall(); } catch (\RuntimeException $e) { Log::add($e->getMessage(), Log::WARNING, 'jerror'); return false; } // Set the extension's name and element $this->name = $this->getName(); $this->element = $this->getElement(); /* * --------------------------------------------------------------------------------------------- * Installer Trigger Loading and Uninstall * --------------------------------------------------------------------------------------------- */ $this->setupScriptfile(); try { $this->triggerManifestScript('preflight'); } catch (\RuntimeException $e) { Log::add($e->getMessage(), Log::WARNING, 'jerror'); return false; } try { $this->triggerManifestScript('uninstall'); } catch (\RuntimeException $e) { // Ignore errors for now } // Tasks from here may fail but we will still attempt to finish the uninstall process $retval = true; /* * --------------------------------------------------------------------------------------------- * Database Processing Section * --------------------------------------------------------------------------------------------- */ try { $this->parseQueries(); } catch (\RuntimeException $e) { Log::add($e->getMessage(), Log::WARNING, 'jerror'); $retval = false; } /* * --------------------------------------------------------------------------------------------- * Filesystem Processing Section * --------------------------------------------------------------------------------------------- */ try { $this->removeExtensionFiles(); } catch (\RuntimeException $e) { Log::add($e->getMessage(), Log::WARNING, 'jerror'); $retval = false; } /* * --------------------------------------------------------------------------------------------- * Finalization and Cleanup Section * --------------------------------------------------------------------------------------------- */ try { $retval |= $this->finaliseUninstall(); } catch (\RuntimeException $e) { Log::add($e->getMessage(), Log::WARNING, 'jerror'); $retval = false; } // And now we run the postflight try { $this->triggerManifestScript('postflight'); } catch (\RuntimeException $e) { Log::add($e->getMessage(), Log::WARNING, 'jerror'); $retval = false; } return $retval; } /** * Generic update method for extensions * * @return boolean|integer The extension ID on success, boolean false on failure * * @since 3.4 */ public function update() { // Set the overwrite setting $this->parent->setOverwrite(true); $this->parent->setUpgrade(true); // And make sure the route is set correctly $this->setRoute('update'); // Now jump into the install method to run the update return $this->install(); } }