/**
* Computes the authorization signature for file shared key.
*
* @param array $headers request headers.
* @param string $url reuqest url.
* @param array $queryParams query variables.
* @param string $httpMethod request http method.
*
* @see File Services (Shared Key Authentication) at
* http://msdn.microsoft.com/en-us/library/windowsazure/dd179428.aspx
*
* @return string
*/
protected function computeSignature($headers, $url, $queryParams, $httpMethod)
{
$canonicalizedHeaders = parent::computeCanonicalizedHeaders($headers);
$canonicalizedResource = parent::computeCanonicalizedResource($url, $queryParams);
$stringToSign = array();
$stringToSign[] = strtoupper($httpMethod);
foreach ($this->includedHeaders as $header) {
$v = Utilities::tryGetValue($headers, $header);
if ($header == Resources::CONTENT_LENGTH && $v == 0) {
$v = '';
}
$stringToSign[] = $v;
}
if (count($canonicalizedHeaders) > 0) {
$stringToSign[] = implode("\n", $canonicalizedHeaders);
}
$stringToSign[] = $canonicalizedResource;
$stringToSign = implode("\n", $stringToSign);
return $stringToSign;
}
public function computeSignatureMock($headers, $url, $queryParams, $httpMethod)
{
return parent::computeSignature($headers, $url, $queryParams, $httpMethod);
}