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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\Protocol\Http\Authenticator; |
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use Apple\ApnPush\Jwt\JwtInterface; |
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use Apple\ApnPush\Protocol\Http\Request; |
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use Jose\Factory\JWKFactory; |
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use Jose\Factory\JWSFactory; |
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/** |
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* Authenticate request via Json Web Token |
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*/ |
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class JwtAuthenticator implements AuthenticatorInterface |
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{ |
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private const ALGORITHM = 'ES256'; |
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/** |
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* @var JwtInterface |
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*/ |
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private $jwt; |
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/** |
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* @var string |
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*/ |
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private $jws = ''; |
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/** |
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* @var \DateInterval |
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*/ |
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private $jwsLifetime = null; |
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/** |
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* @var \DateTime |
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*/ |
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private $jwsValidTo = null; |
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/** |
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* Constructor. |
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* |
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* @param JwtInterface $jwt |
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* @param \DateInterval $jwsLifetime |
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*/ |
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public function __construct(JwtInterface $jwt, \DateInterval $jwsLifetime = null) |
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{ |
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$this->jwt = $jwt; |
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$this->jwsLifetime = is_null($jwsLifetime) ? new \DateInterval('P1H') : $jwsLifetime; |
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if ($jwsLifetime->invert) { |
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throw new \InvalidArgumentException('JWS lifetime must not be inverted'); |
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} |
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$this->jwsLifetime = $jwsLifetime; |
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} |
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/** |
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* Get jws lifetime |
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* |
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* @return \DateInterval |
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*/ |
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public function getJwsLifetime() : \DateInterval |
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{ |
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return $this->jwsLifetime; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function authenticate(Request $request): Request |
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{ |
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$now = new \DateTime(); |
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if ($this->jws === '' || $this->jwsValidTo < $now) { |
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$this->jws = $this->createJwsContent(); |
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$this->jwsValidTo = ($now)->add($this->jwsLifetime); |
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} |
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$request = $request->withHeader('authorization', sprintf('bearer %s', $this->jws)); |
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return $request; |
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} |
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/** |
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* Create the content of JWS by Json Web Token |
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* |
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* @return string |
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*/ |
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private function createJwsContent(): string |
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{ |
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$jwk = JWKFactory::createFromKeyFile($this->jwt->getPath(), '', [ |
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'kid' => $this->jwt->getKey(), |
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'alg' => self::ALGORITHM, |
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'use' => 'sig', |
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]); |
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$payload = [ |
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'iss' => $this->jwt->getTeamId(), |
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'iat' => time(), |
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]; |
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$header = [ |
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'alg' => self::ALGORITHM, |
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'kid' => $jwk->get('kid'), |
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]; |
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return JWSFactory::createJWSToCompactJSON( |
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$payload, |
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$jwk, |
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$header |
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); |
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} |
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} |
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ZhukV /
AppleApnPush
