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* @license GNU General Public License version 2 or later; see LICENSE.txt */ namespace Joomla\CMS\Updater\Adapter; \defined('JPATH_PLATFORM') or die; use Joomla\CMS\Application\ApplicationHelper; use Joomla\CMS\Factory; use Joomla\CMS\Filter\InputFilter; use Joomla\CMS\Language\Text; use Joomla\CMS\Table\Table; use Joomla\CMS\Updater\UpdateAdapter; use Joomla\CMS\Updater\Updater; use Joomla\CMS\Version; /** * Extension class for updater * * @since 1.7.0 */ class ExtensionAdapter extends UpdateAdapter { /** * Start element parser callback. * * @param object $parser The parser object. * @param string $name The name of the element. * @param array $attrs The attributes of the element. * * @return void * * @since 1.7.0 */ protected function _startElement($parser, $name, $attrs = array()) { $this->stack[] = $name; $tag = $this->_getStackLocation(); // Reset the data if (isset($this->$tag)) { $this->$tag->_data = ''; } switch ($name) { case 'UPDATE': $this->currentUpdate = Table::getInstance('update'); $this->currentUpdate->update_site_id = $this->updateSiteId; $this->currentUpdate->detailsurl = $this->_url; $this->currentUpdate->folder = ''; $this->currentUpdate->client_id = 1; $this->currentUpdate->infourl = ''; break; // Don't do anything case 'UPDATES': break; default: if (\in_array($name, $this->updatecols)) { $name = strtolower($name); $this->currentUpdate->$name = ''; } if ($name === 'TARGETPLATFORM') { $this->currentUpdate->targetplatform = $attrs; } if ($name === 'PHP_MINIMUM') { $this->currentUpdate->php_minimum = ''; } if ($name === 'SUPPORTED_DATABASES') { $this->currentUpdate->supported_databases = $attrs; } break; } } /** * Character Parser Function * * @param object $parser Parser object. * @param object $name The name of the element. * * @return void * * @since 1.7.0 */ protected function _endElement($parser, $name) { array_pop($this->stack); switch ($name) { case 'UPDATE': // Lower case and remove the exclamation mark $product = strtolower(InputFilter::getInstance()->clean(Version::PRODUCT, 'cmd')); // Check that the product matches and that the version matches (optionally a regexp) if ($product == $this->currentUpdate->targetplatform['NAME'] && preg_match('/^' . $this->currentUpdate->targetplatform['VERSION'] . '/', JVERSION)) { // Check if PHP version supported via
tag, assume true if tag isn't present if (!isset($this->currentUpdate->php_minimum) || version_compare(PHP_VERSION, $this->currentUpdate->php_minimum, '>=')) { $phpMatch = true; } else { // Notify the user of the potential update $msg = Text::sprintf( 'JLIB_INSTALLER_AVAILABLE_UPDATE_PHP_VERSION', $this->currentUpdate->name, $this->currentUpdate->version, $this->currentUpdate->php_minimum, PHP_VERSION ); Factory::getApplication()->enqueueMessage($msg, 'warning'); $phpMatch = false; } $dbMatch = false; // Check if DB & version is supported via
tag, assume supported if tag isn't present if (isset($this->currentUpdate->supported_databases)) { $db = Factory::getDbo(); $dbType = strtoupper($db->getServerType()); $dbVersion = $db->getVersion(); $supportedDbs = $this->currentUpdate->supported_databases; // MySQL and MariaDB use the same database driver but not the same version numbers if ($dbType === 'mysql') { // Check whether we have a MariaDB version string and extract the proper version from it if (stripos($dbVersion, 'mariadb') !== false) { // MariaDB: Strip off any leading '5.5.5-', if present $dbVersion = preg_replace('/^5\.5\.5-/', '', $dbVersion); $dbType = 'mariadb'; } } // Do we have an entry for the database? if (\array_key_exists($dbType, $supportedDbs)) { $minimumVersion = $supportedDbs[$dbType]; $dbMatch = version_compare($dbVersion, $minimumVersion, '>='); if (!$dbMatch) { // Notify the user of the potential update $dbMsg = Text::sprintf( 'JLIB_INSTALLER_AVAILABLE_UPDATE_DB_MINIMUM', $this->currentUpdate->name, $this->currentUpdate->version, Text::_($db->name), $dbVersion, $minimumVersion ); Factory::getApplication()->enqueueMessage($dbMsg, 'warning'); } } else { // Notify the user of the potential update $dbMsg = Text::sprintf( 'JLIB_INSTALLER_AVAILABLE_UPDATE_DB_TYPE', $this->currentUpdate->name, $this->currentUpdate->version, Text::_($db->name) ); Factory::getApplication()->enqueueMessage($dbMsg, 'warning'); } } else { // Set to true if the
tag is not set $dbMatch = true; } // Check minimum stability $stabilityMatch = true; if (isset($this->currentUpdate->stability) && ($this->currentUpdate->stability < $this->minimum_stability)) { $stabilityMatch = false; } // Some properties aren't valid fields in the update table so unset them to prevent J! from trying to store them unset($this->currentUpdate->targetplatform); if (isset($this->currentUpdate->php_minimum)) { unset($this->currentUpdate->php_minimum); } if (isset($this->currentUpdate->supported_databases)) { unset($this->currentUpdate->supported_databases); } if (isset($this->currentUpdate->stability)) { unset($this->currentUpdate->stability); } // If the PHP version and minimum stability checks pass, consider this version as a possible update if ($phpMatch && $stabilityMatch && $dbMatch) { if (isset($this->latest)) { // We already have a possible update. Check the version. if (version_compare($this->currentUpdate->version, $this->latest->version, '>') == 1) { $this->latest = $this->currentUpdate; } } else { // We don't have any possible updates yet, assume this is an available update. $this->latest = $this->currentUpdate; } } } break; case 'UPDATES': // :D break; } } /** * Character Parser Function * * @param object $parser Parser object. * @param object $data The data. * * @return void * * @note This is public because its called externally. * @since 1.7.0 */ protected function _characterData($parser, $data) { $tag = $this->_getLastTag(); if (\in_array($tag, $this->updatecols)) { $tag = strtolower($tag); $this->currentUpdate->$tag .= $data; } if ($tag === 'PHP_MINIMUM') { $this->currentUpdate->php_minimum = $data; } if ($tag === 'TAG') { $this->currentUpdate->stability = $this->stabilityTagToInteger((string) $data); } } /** * Finds an update. * * @param array $options Update options. * * @return array|boolean Array containing the array of update sites and array of updates. False on failure * * @since 1.7.0 */ public function findUpdate($options) { $response = $this->getUpdateSiteResponse($options); if ($response === false) { return false; } if (\array_key_exists('minimum_stability', $options)) { $this->minimum_stability = $options['minimum_stability']; } $this->xmlParser = xml_parser_create(''); xml_set_object($this->xmlParser, $this); xml_set_element_handler($this->xmlParser, '_startElement', '_endElement'); xml_set_character_data_handler($this->xmlParser, '_characterData'); if (!xml_parse($this->xmlParser, $response->body)) { // If the URL is missing the .xml extension, try appending it and retry loading the update if (!$this->appendExtension && (substr($this->_url, -4) !== '.xml')) { $options['append_extension'] = true; return $this->findUpdate($options); } $app = Factory::getApplication(); $app->getLogger()->warning("Error parsing url: {$this->_url}", array('category' => 'updater')); $app->enqueueMessage(Text::sprintf('JLIB_UPDATER_ERROR_EXTENSION_PARSE_URL', $this->_url), 'warning'); return false; } xml_parser_free($this->xmlParser); if (isset($this->latest)) { if (isset($this->latest->client) && \strlen($this->latest->client)) { $this->latest->client_id = ApplicationHelper::getClientInfo($this->latest->client, true)->id; unset($this->latest->client); } $updates = array($this->latest); } else { $updates = array(); } return array('update_sites' => array(), 'updates' => $updates); } /** * Converts a tag to numeric stability representation. If the tag doesn't represent a known stability level (one of * dev, alpha, beta, rc, stable) it is ignored. * * @param string $tag The tag string, e.g. dev, alpha, beta, rc, stable * * @return integer * * @since 3.4 */ protected function stabilityTagToInteger($tag) { $constant = '\\Joomla\\CMS\\Updater\\Updater::STABILITY_' . strtoupper($tag); if (\defined($constant)) { return \constant($constant); } return Updater::STABILITY_STABLE; } }