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<?php |
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declare(strict_types=1); |
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namespace lepiaf\SapientBundle\Service; |
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use lepiaf\SapientBundle\Exception\{ |
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RequesterHeaderMissingException, |
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NoKeyFoundForRequesterException, |
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SignerHeaderMissingException |
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}; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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class PublicKeyGetter |
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{ |
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public const HEADER_SIGNER = 'Sapient-Signer'; |
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public const HEADER_REQUESTER = 'Sapient-Requester'; |
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/** |
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* @var array |
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*/ |
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private $sealingPublicKeys; |
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/** |
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* @var array |
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*/ |
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private $verifyingPublicKeys; |
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public function __construct(array $sealingPublicKeys, array $verifyingPublicKeys) |
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{ |
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$this->sealingPublicKeys = $sealingPublicKeys; |
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$this->verifyingPublicKeys = $verifyingPublicKeys; |
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} |
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/** |
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* @param RequestInterface $request |
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* |
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* @return string |
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* |
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* @throws RequesterHeaderMissingException |
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* @throws NoKeyFoundForRequesterException |
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*/ |
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public function getSealingKey(RequestInterface $request): string |
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{ |
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if (!$request->hasHeader(self::HEADER_REQUESTER) || 0 === \count($request->getHeader(self::HEADER_REQUESTER))) { |
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throw new RequesterHeaderMissingException(sprintf('%s header is missing.', self::HEADER_REQUESTER)); |
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} |
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foreach ($this->sealingPublicKeys as $sealingPublicKey) { |
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if ($request->getHeader(self::HEADER_REQUESTER)[0] === $sealingPublicKey['name']) { |
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return $sealingPublicKey['key']; |
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} |
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} |
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throw new NoKeyFoundForRequesterException('Sealing key not found.'); |
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} |
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/** |
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* @param ResponseInterface $response |
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* |
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* @return string |
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* |
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* @throws SignerHeaderMissingException |
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* @throws NoKeyFoundForRequesterException |
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*/ |
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public function getVerifyingKey(ResponseInterface $response): string |
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{ |
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if (!$response->hasHeader(self::HEADER_SIGNER) || 0 === \count($response->getHeader(self::HEADER_SIGNER))) { |
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throw new SignerHeaderMissingException(sprintf('%s header is missing.', self::HEADER_SIGNER)); |
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} |
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foreach ($this->verifyingPublicKeys as $verifyingPublicKeys) { |
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if ($response->getHeader(self::HEADER_SIGNER)[0] === $verifyingPublicKeys['name']) { |
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return $verifyingPublicKeys['key']; |
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} |
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} |
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throw new NoKeyFoundForRequesterException('Verifying key not found.'); |
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} |
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/** |
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* @param ResponseInterface $response |
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* |
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* @return string |
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* |
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* @throws SignerHeaderMissingException |
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* @throws NoKeyFoundForRequesterException |
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*/ |
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public function getRequestVerifyingKey(RequestInterface $request): string |
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{ |
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if (!$request->hasHeader(self::HEADER_REQUESTER) || 0 === \count($request->getHeader(self::HEADER_REQUESTER))) { |
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throw new SignerHeaderMissingException(sprintf('%s header is missing.', self::HEADER_REQUESTER)); |
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} |
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foreach ($this->verifyingPublicKeys as $verifyingPublicKeys) { |
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if ($request->getHeader(self::HEADER_REQUESTER)[0] === $verifyingPublicKeys['name']) { |
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return $verifyingPublicKeys['key']; |
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} |
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} |
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throw new NoKeyFoundForRequesterException('Verifying key not found for requester.'); |
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} |
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} |
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lepiaf /
sapient-bundle
