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<?php |
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namespace Covery\Client\Credentials; |
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use Covery\Client\CredentialsInterface; |
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use Psr\Http\Message\RequestInterface; |
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class Sha256 implements CredentialsInterface |
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{ |
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/** |
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* @var string |
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*/ |
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private $token; |
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/** |
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* @var string |
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*/ |
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private $secret; |
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/** |
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* Sha256 credentials constructor |
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* |
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* @param string $token |
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* @param string $secret |
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* @throws \Exception |
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*/ |
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public function __construct($token, $secret) |
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{ |
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if (!is_string($token)) { |
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throw new \InvalidArgumentException('Token must be string'); |
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} elseif (strlen($token) !== 32) { |
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throw new \InvalidArgumentException('Token must be exact 32 characters long'); |
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} |
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if (!is_string($secret)) { |
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throw new \InvalidArgumentException('Secret must be string'); |
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} elseif (strlen($secret) !== 32) { |
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throw new \InvalidArgumentException('Secret must be exact 32 characters long'); |
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} |
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if (!function_exists('hash')) { |
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throw new \Exception('Unable to build Sha256 credentials - function "hash" not exists'); |
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} |
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$this->token = $token; |
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$this->secret = $secret; |
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} |
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/** |
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* Signs provided HTTP request |
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* |
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* @param RequestInterface $request |
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* @return RequestInterface |
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*/ |
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public function signRequest(RequestInterface $request) |
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{ |
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// Generating random NONCE |
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$nonce = microtime(true) . mt_rand(); |
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// Generating signature |
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$stream = $request->getBody(); |
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$body = $stream->getContents(); |
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$signature = hash('sha256', $nonce . $body . $this->secret); |
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// Rewinding/rebuilding |
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if ($stream->isSeekable()) { |
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$stream->rewind(); |
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} else { |
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$stream->close(); |
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$stream = \GuzzleHttp\Psr7\stream_for($body); |
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} |
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return $request |
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->withBody($stream) |
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->withHeader('X-Auth-Token', $this->token) |
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->withHeader('X-Auth-Nonce', $nonce) |
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->withHeader('X-Auth-Signature', $signature) |
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->withHeader('X-Auth-Version', '1.0'); |
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} |
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} |
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covery /
php-client
