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<?php |
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declare(strict_types=1); |
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namespace TMV\JWTModule\Middleware; |
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use Jose\Component\Core\JWK; |
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use Jose\Component\Core\JWKSet; |
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use Psr\Http\Message\ResponseFactoryInterface; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Message\StreamFactoryInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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use TMV\JWTModule\Exception\RuntimeException; |
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class JWKSetHandler implements RequestHandlerInterface |
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{ |
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/** @var ResponseFactoryInterface */ |
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private $responseFactory; |
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/** @var StreamFactoryInterface */ |
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private $streamFactory; |
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/** @var JWKSet */ |
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private $jwkset; |
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/** @var int */ |
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private $maxAge; |
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/** @var callable */ |
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private $jwkSetFactory; |
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public function __construct( |
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ResponseFactoryInterface $responseFactory, |
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StreamFactoryInterface $streamFactory, |
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JWKSet $jwkset, |
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int $maxAge = 0, |
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callable $jwkSetFactory = null |
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) { |
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$this->responseFactory = $responseFactory; |
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$this->streamFactory = $streamFactory; |
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$this->jwkset = $jwkset; |
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$this->maxAge = $maxAge; |
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$this->jwkSetFactory = $jwkSetFactory ?: static function (array $keys) { |
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return new JWKSet($keys); |
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}; |
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} |
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public function handle(ServerRequestInterface $request): ResponseInterface |
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{ |
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$response = $this->responseFactory->createResponse(); |
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if ($this->maxAge > 0) { |
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$response = $response->withHeader('Cache-Control', 'max-age=' . $this->maxAge); |
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} |
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$keys = \array_map(static function (JWK $jwk) { |
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return $jwk->toPublic(); |
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}, $this->jwkset->all()); |
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$jwks = ($this->jwkSetFactory)($keys); |
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if (! $jwks instanceof JWKSet) { |
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throw new RuntimeException('Invalid JWKSet created'); |
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} |
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$jwks = \json_encode($jwks->jsonSerialize()); |
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if (false === $jwks) { |
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throw new RuntimeException('Unable to create jwk set json content'); |
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} |
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return $response->withHeader('Content-Type', 'application/jwk-set+json; charset=UTF-8') |
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->withBody($this->streamFactory->createStream($jwks)); |
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} |
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} |
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thomasvargiu /
jwt-module
