public function onBeforeSend(Event $event)
{
$request = $event['request'];
if ('Guzzle\\Http\\Message\\EntityEnclosingRequest' === get_class($request)) {
if (null === $request->getBody()) {
$request->setBody('{}');
}
$hashedBody = $this->chunkedBase64Encode(Stream::getHash($request->getBody(), 'sha1', true));
} else {
$hashedBody = $this->sha1AndBase64Encode('');
}
$timestamp = gmdate("Y-m-d\\TH:i:s\\Z");
$request->setHeader('Accept', 'application/json');
$request->setHeader('Content-Type', 'application/json');
$request->setHeader('X-Chef-Version', '0.10.8');
$request->setHeader('X-Ops-Sign', 'version=1.0');
$request->setHeader('X-Ops-Timestamp', $timestamp);
$request->setHeader('X-Ops-Userid', $this->getClientName());
$request->setHeader('X-Ops-Content-Hash', $hashedBody);
$signature = $this->signRequest($request->getMethod(), $request->getPath(), $hashedBody, $timestamp);
foreach (explode('\\n', $signature) as $i => $chunk) {
$n = $i + 1;
$request->setHeader("X-Ops-Authorization-{$n}", $chunk);
}
}
/**
* {@inheritdoc}
*/
protected function getDelay($retries, RequestInterface $request, Response $response = null, HttpException $e = null)
{
if ($response) {
// Validate the checksum against our computed checksum
if ($checksum = (string) $response->getHeader('x-amz-crc32')) {
// Retry the request if the checksums don't match, otherwise, return null
return $checksum != hexdec(Stream::getHash($response->getBody(), 'crc32b')) ? true : null;
}
}
}
/**
* {@inheritdoc}
*/
public function getContentMd5($rawOutput = false, $base64Encode = false)
{
$hash = Stream::getHash($this, 'md5', $rawOutput);
return $hash && $base64Encode ? base64_encode($hash) : $hash;
}
/**
* Get the payload part of a signature from a request.
*
* @param RequestInterface $request
*
* @return string
*/
protected function getPayload(RequestInterface $request)
{
// Calculate the request signature payload
if ($request->hasHeader('x-amz-content-sha256')) {
// Handle streaming operations (e.g. Glacier.UploadArchive)
return (string) $request->getHeader('x-amz-content-sha256');
}
if ($request instanceof EntityEnclosingRequestInterface) {
if ($request->getMethod() == 'POST' && count($request->getPostFields())) {
return hash('sha256', (string) $request->getPostFields());
} elseif ($body = $request->getBody()) {
return Stream::getHash($request->getBody(), 'sha256');
}
}
return self::DEFAULT_PAYLOAD;
}
