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- <?php
- /*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
- namespace Symfony\Component\Cache\Traits;
- use Symfony\Component\Cache\Exception\InvalidArgumentException;
- /**
- * @author Nicolas Grekas <p@tchwork.com>
- *
- * @internal
- */
- trait FilesystemCommonTrait
- {
- private $directory;
- private $tmp;
- private function init(string $namespace, ?string $directory)
- {
- if (!isset($directory[0])) {
- $directory = sys_get_temp_dir().\DIRECTORY_SEPARATOR.'symfony-cache';
- } else {
- $directory = realpath($directory) ?: $directory;
- }
- if (isset($namespace[0])) {
- if (preg_match('#[^-+_.A-Za-z0-9]#', $namespace, $match)) {
- throw new InvalidArgumentException(sprintf('Namespace contains "%s" but only characters in [-+_.A-Za-z0-9] are allowed.', $match[0]));
- }
- $directory .= \DIRECTORY_SEPARATOR.$namespace;
- } else {
- $directory .= \DIRECTORY_SEPARATOR.'@';
- }
- if (!file_exists($directory)) {
- @mkdir($directory, 0777, true);
- }
- $directory .= \DIRECTORY_SEPARATOR;
- // On Windows the whole path is limited to 258 chars
- if ('\\' === \DIRECTORY_SEPARATOR && \strlen($directory) > 234) {
- throw new InvalidArgumentException(sprintf('Cache directory too long (%s)', $directory));
- }
- $this->directory = $directory;
- }
- /**
- * {@inheritdoc}
- */
- protected function doClear(string $namespace)
- {
- $ok = true;
- foreach ($this->scanHashDir($this->directory) as $file) {
- if ('' !== $namespace && 0 !== strpos($this->getFileKey($file), $namespace)) {
- continue;
- }
- $ok = ($this->doUnlink($file) || !file_exists($file)) && $ok;
- }
- return $ok;
- }
- /**
- * {@inheritdoc}
- */
- protected function doDelete(array $ids)
- {
- $ok = true;
- foreach ($ids as $id) {
- $file = $this->getFile($id);
- $ok = (!file_exists($file) || $this->doUnlink($file) || !file_exists($file)) && $ok;
- }
- return $ok;
- }
- protected function doUnlink($file)
- {
- return @unlink($file);
- }
- private function write(string $file, string $data, int $expiresAt = null)
- {
- set_error_handler(__CLASS__.'::throwError');
- try {
- if (null === $this->tmp) {
- $this->tmp = $this->directory.uniqid('', true);
- }
- file_put_contents($this->tmp, $data);
- if (null !== $expiresAt) {
- touch($this->tmp, $expiresAt);
- }
- return rename($this->tmp, $file);
- } finally {
- restore_error_handler();
- }
- }
- private function getFile(string $id, bool $mkdir = false, string $directory = null)
- {
- // Use MD5 to favor speed over security, which is not an issue here
- $hash = str_replace('/', '-', base64_encode(hash('md5', static::class.$id, true)));
- $dir = ($directory ?? $this->directory).strtoupper($hash[0].\DIRECTORY_SEPARATOR.$hash[1].\DIRECTORY_SEPARATOR);
- if ($mkdir && !file_exists($dir)) {
- @mkdir($dir, 0777, true);
- }
- return $dir.substr($hash, 2, 20);
- }
- private function getFileKey(string $file): string
- {
- return '';
- }
- private function scanHashDir(string $directory): \Generator
- {
- if (!file_exists($directory)) {
- return;
- }
- $chars = '+-ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
- for ($i = 0; $i < 38; ++$i) {
- if (!file_exists($directory.$chars[$i])) {
- continue;
- }
- for ($j = 0; $j < 38; ++$j) {
- if (!file_exists($dir = $directory.$chars[$i].\DIRECTORY_SEPARATOR.$chars[$j])) {
- continue;
- }
- foreach (@scandir($dir, SCANDIR_SORT_NONE) ?: [] as $file) {
- if ('.' !== $file && '..' !== $file) {
- yield $dir.\DIRECTORY_SEPARATOR.$file;
- }
- }
- }
- }
- }
- /**
- * @internal
- */
- public static function throwError($type, $message, $file, $line)
- {
- throw new \ErrorException($message, 0, $type, $file, $line);
- }
- /**
- * @return array
- */
- public function __sleep()
- {
- throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
- }
- public function __wakeup()
- {
- throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
- }
- public function __destruct()
- {
- if (method_exists(parent::class, '__destruct')) {
- parent::__destruct();
- }
- if (null !== $this->tmp && file_exists($this->tmp)) {
- unlink($this->tmp);
- }
- }
- }
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