/**
* Create a canonicalized AmzHeaders string for a signature.
*
* @param RequestInterface $request Request from which to gather headers
*
* @return string Returns canonicalized AMZ headers.
*/
private function createCanonicalizedAmzHeaders(RequestInterface $request)
{
$headers = array();
foreach ($request->getHeaders() as $name => $header) {
$name = strtolower($name);
if (strpos($name, 'x-amz-') === 0) {
$value = trim((string) $header);
if ($value || $value === '0') {
$headers[$name] = $name . ':' . $value;
}
}
}
if (!$headers) {
return '';
}
ksort($headers);
return implode("\n", $headers) . "\n";
}
private function moveHeadersToQuery(RequestInterface $request)
{
$query = $request->getQuery();
foreach ($request->getHeaders() as $name => $header) {
if (substr($name, 0, 5) == 'x-amz') {
$query[$header->getName()] = (string) $header;
}
if ($name !== 'host') {
$request->removeHeader($name);
}
}
}
/**
* Clone a request while changing the method. Emulates the behavior of
* {@see Guzzle\Http\Message\Request::clone}, but can change the HTTP method.
*
* @param RequestInterface $request Request to clone
* @param string $method Method to set
*
* @return RequestInterface
*/
public function cloneRequestWithMethod(RequestInterface $request, $method)
{
// Create the request with the same client if possible
if ($request->getClient()) {
$cloned = $request->getClient()->createRequest($method, $request->getUrl(), $request->getHeaders());
} else {
$cloned = $this->create($method, $request->getUrl(), $request->getHeaders());
}
$cloned->getCurlOptions()->replace($request->getCurlOptions()->toArray());
$cloned->setEventDispatcher(clone $request->getEventDispatcher());
// Ensure that that the Content-Length header is not copied if changing to GET or HEAD
if (!$cloned instanceof EntityEnclosingRequestInterface) {
$cloned->removeHeader('Content-Length');
} elseif ($request instanceof EntityEnclosingRequestInterface) {
$cloned->setBody($request->getBody());
}
$cloned->getParams()->replace($request->getParams()->toArray());
$cloned->dispatch('request.clone', array('request' => $cloned));
return $cloned;
}
