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<?php |
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/** |
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* PhPsst. |
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* |
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* @copyright Copyright (c) 2018 Felix Sandström |
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* @license MIT |
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*/ |
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namespace PhPsst\Storage; |
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use PhPsst\Password; |
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use PhPsst\PhPsstException; |
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/** |
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* @author Felix Sandström <http://github.com/felixsand> |
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*/ |
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class FileStorage extends Storage |
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{ |
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/** |
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* @var string |
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*/ |
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protected $dir; |
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/** |
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* @var int |
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*/ |
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protected $gcProbability; |
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/** |
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* @const string |
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*/ |
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private const FILE_SUFFIX = '.phpsst'; |
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public function __construct(string $dir, int $gcProbability) |
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{ |
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$dir = rtrim($dir, '/') . '/'; |
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if (empty($dir) || !is_dir($dir)) { |
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throw new \RuntimeException('Invalid directory path'); |
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} |
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if ($gcProbability < 0) { |
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throw new \LogicException('Invalid value for gcProbability'); |
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} |
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$this->dir = $dir; |
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$this->gcProbability = $gcProbability; |
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} |
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public function store(Password $password, bool $allowOverwrite = false): void |
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{ |
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if (!$allowOverwrite && file_exists($this->getFileName($password))) { |
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throw new PhPsstException('The ID already exists', PhPsstException::ID_IS_ALREADY_TAKEN); |
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} |
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$this->writeFile($password); |
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} |
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public function get(string $key): ?Password |
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{ |
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$password = null; |
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if (file_exists($this->getFileNameFromKey($key)) |
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&& ($passwordData = file_get_contents($this->getFileNameFromKey($key)))) { |
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$password = $this->getPasswordFromJson($passwordData); |
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} |
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return $password; |
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} |
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2 |
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public function delete(Password $password): void |
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{ |
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unlink($this->getFileName($password)); |
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} |
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protected function garbageCollection(): void |
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{ |
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if (!$this->gcProbability || rand(1, $this->gcProbability) !== 1) { |
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return; |
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} |
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$files = array_diff(scandir($this->dir, SCANDIR_SORT_NONE), array('.', '..')); |
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5 |
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foreach ($files as $file) { |
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$fileContent = file_get_contents($this->dir . $file); |
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$jsonData = json_decode($fileContent); |
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if ($jsonData && $jsonData->ttl < time()) { |
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unlink($this->dir . $file); |
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} |
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} |
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} |
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protected function writeFile(Password $password): void |
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{ |
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$jsonData = $password->getJson(); |
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$fileName = $this->getFileName($password); |
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if (!is_writable(\dirname($fileName)) || !file_put_contents($fileName, $jsonData)) { |
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throw new \RuntimeException('Can not write file'); |
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} |
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$this->garbageCollection(); |
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} |
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protected function getFileName(Password $password): string |
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{ |
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return $this->getFileNameFromKey($password->getId()); |
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} |
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protected function getFileNameFromKey(string $key): string |
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{ |
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return $this->dir . $key . self::FILE_SUFFIX; |
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} |
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} |
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felixsand /
PhPsst
