/**
* Signs request with signature version 2
*
* Only POST http method is supported
*
* @param Request $request Http request object
* @throws QueryClientException
*/
protected function signRequestV2($request)
{
$time = time();
//Gets the http method name
$httpMethod = $request->getRequestMethod();
//Gets both host and path from the url
$components = parse_url($request->getRequestUrl());
$common = ['AWSAccessKeyId' => $this->awsAccessKeyId, 'SignatureVersion' => '2', 'SignatureMethod' => 'HmacSHA1', 'Timestamp' => gmdate('Y-m-d\\TH:i:s', $time) . "Z"];
$request->append($common);
//Gets adjusted options
$options = (new QueryString($request->getRawBody()))->toArray();
//Calculating canonicalized query string
ksort($options);
$c11dQueryString = http_build_query($options, null, '&', PHP_QUERY_RFC3986);
$stringToSign = $httpMethod . "\n" . strtolower($components['host']) . "\n" . $components['path'] . "\n" . $c11dQueryString;
switch ($common['SignatureMethod']) {
case 'HmacSHA1':
case 'HmacSHA256':
$algo = strtolower(substr($common['SignatureMethod'], 4));
break;
default:
throw new QueryClientException('Unknown SignatureMethod ' . $common['SignatureMethod']);
}
$request->append(['Signature' => base64_encode(hash_hmac($algo, $stringToSign, $this->secretAccessKey, 1))]);
$request->addHeaders(['X-Amz-Date' => gmdate(\DateTime::ISO8601, $time)]);
}
