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<?php |
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declare(strict_types=1); |
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namespace Jasny\Auth\Confirmation; |
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use Jasny\Auth\Storage\TokenStorageInterface; |
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use Jasny\Auth\StorageInterface as Storage; |
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use Jasny\Auth\UserInterface as User; |
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use Jasny\Immutable; |
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use Psr\Log\LoggerInterface as Logger; |
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use Psr\Log\NullLogger; |
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/** |
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* Generate random confirmation tokens. |
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* The random token needs to be stored to the database. |
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*/ |
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class TokenConfirmation implements ConfirmationInterface |
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{ |
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use Immutable\With; |
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protected int $numberOfBytes; |
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/** @phpstan-param \Closure&callable(string):string */ |
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protected \Closure $encode; |
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protected TokenStorageInterface $storage; |
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protected Logger $logger; |
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protected string $subject; |
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/** |
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* Class constructor. |
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* |
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* @param int $numberOfBytes Number of bytes of the random string. |
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* @param callable|null $encode Method to encode random string. |
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*/ |
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public function __construct(int $numberOfBytes = 16, ?callable $encode = null) |
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{ |
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$this->numberOfBytes = $numberOfBytes; |
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$this->encode = \Closure::fromCallable($encode ?? [__CLASS__, 'encode']); |
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$this->logger = new NullLogger(); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function withStorage(Storage $storage): self |
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{ |
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if (!$storage instanceof TokenStorageInterface) { |
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throw new \InvalidArgumentException("Storage object needs to implement " . TokenStorageInterface::class); |
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} |
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return $this->withProperty('storage', $storage); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function withLogger(Logger $logger) |
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{ |
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return $this->withProperty('logger', $logger); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function withSubject(string $subject) |
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{ |
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return $this->withProperty('subject', $subject); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getToken(User $user, \DateTimeInterface $expire): string |
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{ |
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if (!isset($this->storage)) { |
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throw new \BadMethodCallException("Storage is not set"); |
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} |
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$rawToken = random_bytes($this->numberOfBytes); |
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$token = ($this->encode)($rawToken); |
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$this->storage->saveToken($this->subject, $token, $user, $expire); |
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return $token; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function from(string $token): User |
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{ |
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if (!isset($this->storage)) { |
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throw new \BadMethodCallException("Storage is not set"); |
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} |
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$info = $this->storage->fetchToken($this->subject, $token); |
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if ($info === null) { |
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$this->logger->debug('Unknown confirmation token', ['token' => $token]); |
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throw new InvalidTokenException("Token has been revoked"); |
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} |
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['uid' => $uid, 'expire' => $expire] = $info; |
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if ($expire <= new \DateTime()) { |
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$this->logger->debug('Expired confirmation token', ['token' => $token, 'uid' => $uid]); |
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throw new InvalidTokenException("Token is expired"); |
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} |
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$user = $this->storage->fetchUserById($uid); |
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if ($user === null) { |
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$this->logger->debug('Invalid confirmation token: user not available', ['token' => $token, 'uid' => $uid]); |
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throw new InvalidTokenException("Token has been revoked"); |
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} |
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return $user; |
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} |
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/** |
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* Encode the raw token to an alphanumeric string. |
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*/ |
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protected static function encode(string $rawToken): string |
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{ |
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return base_convert(bin2hex($rawToken), 16, 36); |
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} |
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} |
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jasny /
auth
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