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<?php |
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declare(strict_types=1); |
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namespace UMA\Psr7Hmac; |
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use Psr\Http\Message\RequestInterface; |
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use UMA\Psr7Hmac\Internal\HashCalculator; |
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use UMA\Psr7Hmac\Internal\HeaderNameNormalizer; |
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use UMA\Psr7Hmac\Internal\RequestSerializer; |
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final class Signer |
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{ |
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/** |
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* @var string |
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*/ |
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private $secret; |
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85 |
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public function __construct(string $secret) |
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{ |
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85 |
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$this->secret = $secret; |
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} |
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public function sign(RequestInterface $request): RequestInterface |
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{ |
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85 |
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$serialization = RequestSerializer::serialize( |
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85 |
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$preSignedMessage = $this->withSignedHeadersHeader($request) |
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); |
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85 |
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return $preSignedMessage->withHeader( |
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85 |
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Specification::AUTH_HEADER, |
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85 |
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Specification::AUTH_PREFIX.HashCalculator::hmac($serialization, $this->secret) |
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); |
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} |
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85 |
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private function withSignedHeadersHeader(RequestInterface $request): RequestInterface |
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{ |
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85 |
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$headers = [HeaderNameNormalizer::normalize(Specification::SIGN_HEADER)]; |
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85 |
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foreach ($request->getHeaders() as $name => $_) { |
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$headers[] = HeaderNameNormalizer::normalize($name); |
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} |
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// Some of the tested RequestInterface implementations do not include |
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// the Host header in $message->getHeaders(), so it is explicitly set when needed |
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85 |
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if (!\in_array('host', $headers, true)) { |
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$headers[] = 'host'; |
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} |
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// There is no guarantee about the order of the headers returned by |
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// $message->getHeaders(), so they are explicitly sorted in order |
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// to produce the exact same string regardless of the underlying implementation |
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85 |
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\sort($headers); |
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85 |
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return $request->withHeader(Specification::SIGN_HEADER, \implode(',', $headers)); |
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} |
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} |
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1ma /
Psr7Hmac
