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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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use SQLite3; |
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/** |
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* @author Felix Sandström <http://github.com/felixsand> |
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*/ |
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class SqLiteStorage extends Storage |
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{ |
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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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* @var SQLite3 |
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*/ |
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protected $db; |
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public function __construct(SQLite3 $db, int $gcProbability) |
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{ |
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if ($gcProbability < 0) { |
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throw new \LogicException('Invalid value for gcProbability'); |
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} |
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$this->gcProbability = $gcProbability; |
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$this->db = $db; |
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if (method_exists(SQLite3::class, 'enableExceptions')) { |
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// Method not available on HHVM |
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$this->db->enableExceptions(true); |
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} |
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$sql = <<<'SQL' |
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CREATE TABLE IF NOT EXISTS `phPsst` ( |
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id VARCHAR(13) PRIMARY KEY NOT NULL, |
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password TEXT NOT NULL, |
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ttl INT NOT NULL, |
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views INT NOT NULL |
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); |
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SQL; |
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$this->db->exec($sql); |
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} |
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public function store(Password $password, bool $allowOverwrite = false): void |
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{ |
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if ($this->get($password->getId())) { |
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if (!$allowOverwrite) { |
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throw new PhPsstException('The ID already exists', PhPsstException::ID_IS_ALREADY_TAKEN); |
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} |
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$this->delete($password); |
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} |
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$stmt = $this->db->prepare('INSERT INTO phPsst VALUES (:id, :password, :ttl, :views)'); |
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$stmt->bindValue(':id', $password->getId(), SQLITE3_TEXT); |
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$stmt->bindValue(':password', $password->getPassword(), SQLITE3_TEXT); |
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$stmt->bindValue(':ttl', $password->getTtl(), SQLITE3_INTEGER); |
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$stmt->bindValue(':views', $password->getViews(), SQLITE3_INTEGER); |
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$stmt->execute(); |
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$this->garbageCollection(); |
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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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$stmt = $this->db->prepare('SELECT * FROM phPsst WHERE ID = :id'); |
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$stmt->bindValue(':id', $key, SQLITE3_TEXT); |
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$result = $stmt->execute(); |
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if (($row = $result->fetchArray())) { |
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$password = new Password($row['id'], $row['password'], $row['ttl'], $row['views']); |
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if ($row['ttl'] < time()) { |
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$this->delete($password); |
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$password = null; |
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} |
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} |
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return $password; |
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} |
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public function delete(Password $password): void |
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{ |
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$stmt = $this->db->prepare('DELETE FROM phPsst WHERE ID = :id'); |
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$stmt->bindValue(':id', $password->getId(), SQLITE3_TEXT); |
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$stmt->execute(); |
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$this->garbageCollection(); |
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} |
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protected function garbageCollection(): void |
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{ |
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if (!$this->gcProbability || rand(1, $this->gcProbability) !== 1) { |
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return; |
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} |
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$stmt = $this->db->prepare('DELETE FROM phPsst WHERE ttl < :time'); |
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$stmt->bindValue(':time', time(), SQLITE3_INTEGER); |
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$stmt->execute(); |
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} |
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} |
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felixsand /
PhPsst
