jasny /
auth
| 1 | <?php |
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| 2 | |||
| 3 | declare(strict_types=1); |
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| 4 | |||
| 5 | namespace Jasny\Auth\Session; |
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| 6 | |||
| 7 | use Jasny\Auth\Session\Jwt\Cookie; |
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| 8 | use Jasny\Auth\Session\Jwt\CookieInterface; |
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| 9 | use Jasny\Immutable; |
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| 10 | use Lcobucci\JWT\Configuration; |
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| 11 | |||
| 12 | /** |
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| 13 | * Use JSON Web Token and JSON Web Signature (RFC 7519) to store auth session info. |
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| 14 | * |
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| 15 | * @see https://github.com/lcobucci/jwt |
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| 16 | */ |
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| 17 | class Jwt implements SessionInterface |
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| 18 | { |
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| 19 | use Immutable\With; |
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| 20 | |||
| 21 | protected Configuration $jwtConfig; |
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| 22 | |||
| 23 | protected int $ttl = 24 * 3600; |
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| 24 | protected CookieInterface $cookie; |
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| 25 | |||
| 26 | /** |
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| 27 | * JWT constructor. |
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| 28 | */ |
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| 29 | 7 | public function __construct(Configuration $jwtConfig) |
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| 30 | { |
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| 31 | 7 | $this->jwtConfig = $jwtConfig; |
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| 32 | 7 | $this->cookie = new Cookie('jwt'); |
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| 33 | 7 | } |
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| 34 | |||
| 35 | /** |
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| 36 | * Get a copy with a different TTL for expiry. |
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| 37 | */ |
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| 38 | 1 | public function withTtl(int $seconds): self |
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| 39 | { |
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| 40 | 1 | return $this->withProperty('ttl', $seconds); |
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| 41 | } |
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| 42 | |||
| 43 | /** |
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| 44 | * Get a copy with custom cookie handler. |
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| 45 | */ |
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| 46 | 7 | public function withCookie(CookieInterface $cookie): self |
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| 47 | { |
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| 48 | 7 | return $this->withProperty('cookie', $cookie); |
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| 49 | } |
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| 50 | |||
| 51 | /** |
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| 52 | * @inheritDoc |
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| 53 | */ |
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| 54 | 4 | public function getInfo(): array |
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| 55 | { |
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| 56 | 4 | $jwt = $this->cookie->get(); |
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| 57 | |||
| 58 | 4 | $token = $jwt !== null && $jwt !== '' |
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| 59 | 3 | ? $this->jwtConfig->parser()->parse($jwt) |
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| 60 | 4 | : null; |
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| 61 | |||
| 62 | 4 | $constraints = $this->jwtConfig->validationConstraints(); |
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| 63 | |||
| 64 | if ( |
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| 65 | 4 | $token === null || |
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| 66 | 4 | ($constraints !== [] && !$this->jwtConfig->validator()->validate($token, ...$constraints)) |
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| 67 | ) { |
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| 68 | 2 | return ['user' => null, 'context' => null, 'checksum' => null, 'timestamp' => null]; |
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| 69 | } |
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| 70 | |||
| 71 | 2 | $timestamp = $token->headers()->get('iat'); |
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| 72 | 2 | if (is_array($timestamp)) { |
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| 73 | 1 | $timestamp = new \DateTimeImmutable($timestamp['date'], new \DateTimeZone($timestamp['timezone'])); |
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| 74 | } |
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| 75 | |||
| 76 | return [ |
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| 77 | 2 | 'user' => $token->claims()->get('user'), |
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| 78 | 2 | 'context' => $token->claims()->get('context'), |
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| 79 | 2 | 'checksum' => $token->claims()->get('checksum'), |
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| 80 | 2 | 'timestamp' => $timestamp, |
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| 81 | ]; |
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| 82 | } |
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| 83 | |||
| 84 | /** |
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| 85 | * @inheritDoc |
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| 86 | */ |
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| 87 | 2 | public function persist($userId, $contextId, ?string $checksum, ?\DateTimeInterface $timestamp): void |
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| 88 | { |
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| 89 | 2 | $builder = clone $this->jwtConfig->builder(); |
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| 90 | |||
| 91 | 2 | if ($timestamp instanceof \DateTime) { |
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| 92 | 2 | $timestamp = \DateTimeImmutable::createFromMutable($timestamp); |
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| 93 | } |
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| 94 | 2 | $time = $timestamp ?? new \DateTimeImmutable(); |
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| 95 | 2 | $expire = $time->add(new \DateInterval("PT{$this->ttl}S")); |
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| 96 | |||
| 97 | $builder |
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| 98 | 2 | ->withClaim('user', $userId) |
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| 99 | 2 | ->withClaim('context', $contextId) |
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| 100 | 2 | ->withClaim('checksum', $checksum) |
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| 101 | 2 | ->issuedAt($time) |
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| 102 | 2 | ->expiresAt($expire); |
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| 103 | |||
| 104 | 2 | if ($timestamp !== null) { |
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| 105 | 2 | $builder->withHeader('iat', $timestamp); |
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| 106 | } |
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| 107 | |||
| 108 | 2 | $this->cookie->set( |
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| 109 | 2 | $builder->getToken($this->jwtConfig->signer(), $this->jwtConfig->signingKey())->toString(), |
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| 110 | 2 | $expire->getTimestamp() |
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| 111 | ); |
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| 112 | 2 | } |
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| 113 | |||
| 114 | /** |
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| 115 | * @inheritDoc |
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| 116 | */ |
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| 117 | 1 | public function clear(): void |
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| 118 | { |
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| 119 | 1 | $this->cookie->clear(); |
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| 120 | 1 | } |
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| 121 | } |
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| 122 |