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<?php |
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declare(strict_types=1); |
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namespace Jasny\Auth\Session; |
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use Jasny\Auth\Session\Jwt\Cookie; |
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use Jasny\Auth\Session\Jwt\CookieInterface; |
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use Jasny\Immutable; |
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use Lcobucci\JWT\Configuration; |
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/** |
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* Use JSON Web Token and JSON Web Signature (RFC 7519) to store auth session info. |
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* |
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* @see https://github.com/lcobucci/jwt |
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*/ |
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class Jwt implements SessionInterface |
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{ |
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use Immutable\With; |
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protected Configuration $jwtConfig; |
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protected int $ttl = 24 * 3600; |
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protected CookieInterface $cookie; |
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/** |
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* JWT constructor. |
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*/ |
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public function __construct(Configuration $jwtConfig) |
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{ |
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$this->jwtConfig = $jwtConfig; |
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$this->cookie = new Cookie('jwt'); |
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} |
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/** |
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* Get a copy with a different TTL for expiry. |
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*/ |
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public function withTtl(int $seconds): self |
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{ |
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return $this->withProperty('ttl', $seconds); |
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} |
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/** |
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* Get a copy with custom cookie handler. |
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*/ |
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public function withCookie(CookieInterface $cookie): self |
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{ |
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return $this->withProperty('cookie', $cookie); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getInfo(): array |
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{ |
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$jwt = $this->cookie->get(); |
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$token = $jwt !== null && $jwt !== '' |
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? $this->jwtConfig->parser()->parse($jwt) |
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: null; |
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$constraints = $this->jwtConfig->validationConstraints(); |
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if ( |
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$token === null || |
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($constraints !== [] && !$this->jwtConfig->validator()->validate($token, ...$constraints)) |
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) { |
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return ['user' => null, 'context' => null, 'checksum' => null, 'timestamp' => null]; |
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} |
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$timestamp = $token->headers()->get('iat'); |
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if (is_array($timestamp)) { |
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$timestamp = new \DateTimeImmutable($timestamp['date'], new \DateTimeZone($timestamp['timezone'])); |
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} |
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return [ |
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'user' => $token->claims()->get('user'), |
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'context' => $token->claims()->get('context'), |
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'checksum' => $token->claims()->get('checksum'), |
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'timestamp' => $timestamp, |
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]; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function persist($userId, $contextId, ?string $checksum, ?\DateTimeInterface $timestamp): void |
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{ |
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$builder = clone $this->jwtConfig->builder(); |
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if ($timestamp instanceof \DateTime) { |
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$timestamp = \DateTimeImmutable::createFromMutable($timestamp); |
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} |
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$time = $timestamp ?? new \DateTimeImmutable(); |
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$expire = $time->add(new \DateInterval("PT{$this->ttl}S")); |
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$builder |
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->withClaim('user', $userId) |
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->withClaim('context', $contextId) |
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->withClaim('checksum', $checksum) |
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->issuedAt($time) |
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->expiresAt($expire); |
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if ($timestamp !== null) { |
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$builder->withHeader('iat', $timestamp); |
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} |
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$this->cookie->set( |
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$builder->getToken($this->jwtConfig->signer(), $this->jwtConfig->signingKey())->toString(), |
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$expire->getTimestamp() |
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); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function clear(): void |
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{ |
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$this->cookie->clear(); |
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} |
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} |
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jasny /
auth
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