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<?php |
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declare(strict_types = 1); |
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/* |
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* This file is part of the AppleApnPush package |
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* |
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* (c) Vitaliy Zhuk <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code |
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*/ |
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namespace Apple\ApnPush\Jwt\SignatureGenerator; |
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use Apple\ApnPush\Jwt\JwtInterface; |
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use Jose\Component\Core\AlgorithmManager; |
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use Jose\Component\Core\Converter\JsonConverter; |
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use Jose\Component\Core\Converter\StandardConverter; |
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use Jose\Component\KeyManagement\JWKFactory; |
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use Jose\Component\Signature\Algorithm\ES256; |
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use Jose\Component\Signature\JWSBuilder; |
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use Jose\Component\Signature\Serializer\CompactSerializer; |
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use Jose\Component\Signature\Serializer\JWSSerializer; |
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/** |
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* The JWT signature generator worked with "web-token/jwt-*" libraries. |
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* |
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* Next libraries must be installed: |
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* - web-token/jwt-key-mgmt |
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* - web-token/jwt-core |
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* - web-token/jwt-signature |
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*/ |
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class WebTokenJwtSignatureGenerator implements SignatureGeneratorInterface |
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{ |
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/** |
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* @var JsonConverter |
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*/ |
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private $jsonConverter; |
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/** |
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* @var JWSBuilder |
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*/ |
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private $jwsBuilder; |
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/** |
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* @var JWSSerializer |
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*/ |
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private $serializer; |
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/** |
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* Constructor. |
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*/ |
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public function __construct() |
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{ |
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$this->jsonConverter = new StandardConverter(); |
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$this->jwsBuilder = new JWSBuilder($this->jsonConverter, AlgorithmManager::create([new ES256()])); |
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$this->serializer = new CompactSerializer($this->jsonConverter); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function generate(JwtInterface $jwt): string |
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{ |
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$jwk = JWKFactory::createFromKeyFile($jwt->getPath(), '', [ |
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'kid' => $jwt->getKey(), |
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]); |
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$claims = [ |
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'iss' => $jwt->getTeamId(), |
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'iat' => time(), |
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]; |
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$header = [ |
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'alg' => 'ES256', |
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'kid' => $jwk->get('kid'), |
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]; |
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$payload = $this->jsonConverter->encode($claims); |
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$jws = $this->jwsBuilder |
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->create() |
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->withPayload($payload) |
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->addSignature($jwk, $header) |
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->build(); |
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return $this->serializer->serialize($jws); |
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} |
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} |
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