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<?php /* vim: set expandtab sw=4 ts=4 sts=4: */ /** * Responsible for retrieving version information and notifiying about latest version * * @package PhpMyAdmin */ declare(strict_types=1); namespace PhpMyAdmin; use PhpMyAdmin\Utils\HttpRequest; use \stdClass; /** * Responsible for retrieving version information and notifiying about latest version * * @package PhpMyAdmin * */ class VersionInformation { /** * Returns information with latest version from phpmyadmin.net * * @return stdClass|null JSON decoded object with the data */ public function getLatestVersion(): ?stdClass { if (! $GLOBALS['cfg']['VersionCheck']) { return null; } // Get response text from phpmyadmin.net or from the session // Update cache every 6 hours if (isset($_SESSION['cache']['version_check']) && time() < $_SESSION['cache']['version_check']['timestamp'] + 3600 * 6 ) { $save = false; $response = $_SESSION['cache']['version_check']['response']; } else { $save = true; $file = 'https://www.phpmyadmin.net/home_page/version.json'; $httpRequest = new HttpRequest(); $response = $httpRequest->create($file, 'GET'); } $response = $response ?: '{}'; /* Parse response */ $data = json_decode($response); /* Basic sanity checking */ if (! is_object($data) || empty($data->version) || empty($data->releases) || empty($data->date) ) { return null; } if ($save) { $_SESSION['cache']['version_check'] = [ 'response' => $response, 'timestamp' => time(), ]; } return $data; } /** * Calculates numerical equivalent of phpMyAdmin version string * * @param string $version version * * @return mixed false on failure, integer on success */ public function versionToInt($version) { $parts = explode('-', $version); if (count($parts) > 1) { $suffix = $parts[1]; } else { $suffix = ''; } $parts = explode('.', $parts[0]); $result = 0; if (count($parts) >= 1 && is_numeric($parts[0])) { $result += 1000000 * (int) $parts[0]; } if (count($parts) >= 2 && is_numeric($parts[1])) { $result += 10000 * (int) $parts[1]; } if (count($parts) >= 3 && is_numeric($parts[2])) { $result += 100 * (int) $parts[2]; } if (count($parts) >= 4 && is_numeric($parts[3])) { $result += 1 * (int) $parts[3]; } if (! empty($suffix)) { $matches = []; if (preg_match('/^(\D+)(\d+)$/', $suffix, $matches)) { $suffix = $matches[1]; $result += intval($matches[2]); } switch ($suffix) { case 'pl': $result += 60; break; case 'rc': $result += 30; break; case 'beta': $result += 20; break; case 'alpha': $result += 10; break; case 'dev': $result += 0; break; } } else { $result += 50; // for final } return $result; } /** * Returns the version and date of the latest phpMyAdmin version compatible * with the available PHP and MySQL versions * * @param array $releases array of information related to each version * * @return array|null containing the version and date of latest compatible version */ public function getLatestCompatibleVersion(array $releases) { // Maintains the latest compatible version $latestRelease = null; foreach ($releases as $release) { $phpVersions = $release->php_versions; $phpConditions = explode(",", $phpVersions); foreach ($phpConditions as $phpCondition) { if (! $this->evaluateVersionCondition('PHP', $phpCondition)) { continue 2; } } // We evaluate MySQL version constraint if there are only // one server configured. if (count($GLOBALS['cfg']['Servers']) === 1) { $mysqlVersions = $release->mysql_versions; $mysqlConditions = explode(",", $mysqlVersions); foreach ($mysqlConditions as $mysqlCondition) { if (! $this->evaluateVersionCondition('MySQL', $mysqlCondition)) { continue 2; } } } // To compare the current release with the previous latest release or no release is set if ($latestRelease === null || version_compare($latestRelease['version'], $release->version, '<')) { $latestRelease = [ 'version' => $release->version, 'date' => $release->date ]; } } // no compatible version return $latestRelease; } /** * Checks whether PHP or MySQL version meets supplied version condition * * @param string $type PHP or MySQL * @param string $condition version condition * * @return boolean whether the condition is met */ public function evaluateVersionCondition(string $type, string $condition) { $operator = null; $version = null; $operators = [ "<=", ">=", "!=", "<>", "<", ">", "=", ]; // preserve order foreach ($operators as $oneOperator) { if (strpos($condition, $oneOperator) === 0) { $operator = $oneOperator; $version = substr($condition, strlen($oneOperator)); break; } } $myVersion = null; if ($type == 'PHP') { $myVersion = $this->getPHPVersion(); } elseif ($type == 'MySQL') { $myVersion = $this->getMySQLVersion(); } if ($myVersion !== null && $operator !== null) { return version_compare($myVersion, $version, $operator); } return false; } /** * Returns the PHP version * * @return string PHP version */ protected function getPHPVersion() { return PHP_VERSION; } /** * Returns the MySQL version if connected to a database * * @return string|null MySQL version */ protected function getMySQLVersion() { if (isset($GLOBALS['dbi'])) { return $GLOBALS['dbi']->getVersionString(); } return null; } }