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<?php |
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/* |
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* sessionware (https://github.com/juliangut/sessionware). |
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* PSR7 compatible session management. |
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* |
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* @license BSD-3-Clause |
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* @link https://github.com/juliangut/sessionware |
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* @author Julián Gutiérrez <[email protected]> |
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*/ |
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declare(strict_types=1); |
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namespace Jgut\Sessionware\Handler; |
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use Jgut\Sessionware\Configuration; |
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/** |
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* Filesystem session handler. |
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*/ |
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class Filesystem implements Handler |
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{ |
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use HandlerTrait; |
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/** |
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* @var string |
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*/ |
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protected $savePath; |
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/** |
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* @var string |
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*/ |
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protected $filePrefix; |
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/** |
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* File session handler constructor. |
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* |
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* @param string $filePrefix |
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*/ |
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public function __construct($filePrefix = 'sess_') |
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{ |
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$this->filePrefix = $filePrefix; |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @throws \RuntimeException |
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*/ |
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public function open($savePath, $sessionName) |
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{ |
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$this->testConfiguration(); |
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$savePath = $this->configuration->getSavePath(); |
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$sessionName = $this->configuration->getName(); |
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$savePathParts = explode(DIRECTORY_SEPARATOR, rtrim($savePath, DIRECTORY_SEPARATOR)); |
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if ($sessionName !== Configuration::SESSION_NAME_DEFAULT && $sessionName !== array_pop($savePathParts)) { |
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$savePath .= DIRECTORY_SEPARATOR . $sessionName; |
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} |
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if (!is_dir($savePath) && !@mkdir($savePath, 0777, true) && !is_dir($savePath)) { |
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// @codeCoverageIgnoreStart |
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throw new \RuntimeException( |
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sprintf('Failed to create session save path "%s", directory might be write protected', $savePath) |
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); |
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// @codeCoverageIgnoreEnd |
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} |
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$this->savePath = $savePath; |
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return true; |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @return bool |
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*/ |
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public function close() |
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{ |
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return true; |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @return bool |
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*/ |
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public function destroy($sessionId) |
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{ |
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$sessionFile = $this->getSessionFile($sessionId); |
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if (file_exists($sessionFile)) { |
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unlink($sessionFile); |
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} |
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return false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function read($sessionId) |
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{ |
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$sessionFile = $this->getSessionFile($sessionId); |
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if (!file_exists($sessionFile)) { |
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$sessionData = serialize([]); |
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$this->write($sessionId, $sessionData); |
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return $sessionData; |
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} |
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$fileDescriptor = fopen($sessionFile, 'rb'); |
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flock($fileDescriptor, \LOCK_SH); |
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$sessionData = stream_get_contents($fileDescriptor); |
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flock($fileDescriptor, \LOCK_UN); |
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fclose($fileDescriptor); |
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return $this->decryptSessionData($sessionData); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function write($sessionId, $sessionData) |
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{ |
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$sessionFile = $this->getSessionFile($sessionId); |
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if (!file_exists($sessionFile)) { |
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touch($sessionFile); |
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chmod($sessionFile, 0777); |
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} |
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// file_put_contents locking does not support user-land stream wrappers (https://bugs.php.net/bug.php?id=72950) |
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$fileDescriptor = fopen($sessionFile, 'w'); |
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flock($fileDescriptor, \LOCK_EX); |
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fwrite($fileDescriptor, $this->encryptSessionData($sessionData)); |
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flock($fileDescriptor, \LOCK_UN); |
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fclose($fileDescriptor); |
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return true; |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @SuppressWarnings(PMD.ShortMethodName) |
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* @SuppressWarnings(PMD.UnusedFormalParameter) |
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*/ |
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public function gc($maxLifetime) |
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{ |
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$currentTime = time(); |
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foreach (new \DirectoryIterator($this->savePath) as $sessionFile) { |
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if ($sessionFile->isFile() |
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&& strpos($sessionFile->getFilename(), $this->filePrefix) === 0 |
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&& $this->configuration->getLifetime() < ($currentTime - $sessionFile->getMTime()) |
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) { |
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unlink($sessionFile->getPathname()); |
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} |
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} |
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return true; |
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} |
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/** |
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* Get session file. |
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* |
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* @param string $sessionId |
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* |
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* @return string |
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*/ |
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protected function getSessionFile(string $sessionId) : string |
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{ |
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return $this->savePath . DIRECTORY_SEPARATOR . $this->filePrefix . $sessionId; |
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} |
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} |
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