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<?php |
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namespace Acquia\Hmac\Guzzle; |
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use Acquia\Hmac\Exception\MalformedResponseException; |
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use Acquia\Hmac\KeyInterface; |
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use Acquia\Hmac\RequestSigner; |
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use Acquia\Hmac\ResponseAuthenticator; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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class HmacAuthMiddleware |
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{ |
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/** |
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* @var \Acquia\Hmac\KeyInterface |
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* The key with which to sign requests and responses. |
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*/ |
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protected $key; |
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/** |
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* @var \Acquia\Hmac\RequestSignerInterface |
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*/ |
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protected $requestSigner; |
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/** |
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* @var array |
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*/ |
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protected $customHeaders = []; |
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/** |
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* @param \Acquia\Hmac\KeyInterface $key |
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* @param string $realm |
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* @param array $customHeaders |
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*/ |
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public function __construct(KeyInterface $key, $realm = 'Acquia', array $customHeaders = []) |
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{ |
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$this->key = $key; |
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$this->customHeaders = $customHeaders; |
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$this->requestSigner = new RequestSigner($key, $realm); |
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} |
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/** |
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* Called when the middleware is handled. |
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* |
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* @param callable $handler |
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* |
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* @return \Closure |
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*/ |
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public function __invoke(callable $handler) |
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{ |
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return function ($request, array $options) use ($handler) { |
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$request = $this->signRequest($request); |
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$promise = function (ResponseInterface $response) use ($request) { |
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if ($response->getStatusCode() != 401) { |
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$authenticator = new ResponseAuthenticator($request, $this->key); |
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if (!$authenticator->isAuthentic($response)) { |
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throw new MalformedResponseException( |
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'Could not verify the authenticity of the response.', |
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null, |
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0, |
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$response |
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); |
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} |
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} |
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return $response; |
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}; |
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return $handler($request, $options)->then($promise); |
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}; |
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} |
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/** |
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* Signs the request with the appropriate headers. |
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* |
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* @param \Psr\Http\Message\RequestInterface $request |
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* |
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* @return \Psr\Http\Message\RequestInterface |
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*/ |
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public function signRequest(RequestInterface $request) |
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{ |
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return $this->requestSigner->signRequest($request, $this->customHeaders); |
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} |
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} |
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acquia /
http-hmac-php
