internal Signer GetSigner(HttpContext context)
{
switch (context.ChooseAuthType)
{
case AuthTypeEnum.V2:
return(V2Signer.GetInstance());
case AuthTypeEnum.V4:
return(V4Signer.GetInstance());
default:
return(ObsSigner.GetInstance());
}
}
private CreateTemporarySignatureResponse CreateV4TemporarySignature(HttpRequest httpRequest, long expires, IHeaders iheaders)
{
IDictionary <string, string> dateDict = V4Signer.GetLongDateAndShortDate(httpRequest, iheaders);
string host = httpRequest.GetHost(this.ObsConfig.Endpoint);
CommonUtil.AddHeader(httpRequest, Constants.CommonHeaders.Host, host);
IDictionary <string, string> tempDict = new Dictionary <string, string>();
foreach (KeyValuePair <string, string> entry in httpRequest.Headers)
{
if (string.IsNullOrEmpty(entry.Key))
{
continue;
}
tempDict.Add(entry.Key.Trim().ToLower(), entry.Value);
}
List <string> signedHeadersList = V4Signer.GetSignedHeaderList(tempDict);
string signedHeaders = V4Signer.GetSignedHeaders(signedHeadersList);
CommonUtil.AddParam(httpRequest, "X-Amz-Algorithm", V4Signer.Algorithm);
CommonUtil.AddParam(httpRequest, "X-Amz-Credential", this.sp.Ak + "/" + dateDict["ShortDate"] + V4Signer.ScopeSuffix);
CommonUtil.AddParam(httpRequest, "X-Amz-Date", dateDict["LongDate"]);
CommonUtil.AddParam(httpRequest, "X-Amz-Expires", expires.ToString());
CommonUtil.AddParam(httpRequest, "X-Amz-SignedHeaders", signedHeaders);
HttpContext context = new HttpContext(this.sp, this.ObsConfig);
string signature = CommonUtil.UrlEncode(V4Signer.GetTemporarySignature(httpRequest, context, iheaders, dateDict, signedHeaders, tempDict, signedHeadersList, null));
CreateTemporarySignatureResponse response = new CreateTemporarySignatureResponse();
response.SignUrl = this.ObsConfig.Endpoint.StartsWith("https", StringComparison.OrdinalIgnoreCase) ?
"https://" : "http://";
response.SignUrl += host;
if (this.ObsConfig.PathStyle && !string.IsNullOrEmpty(httpRequest.BucketName))
{
response.SignUrl += "/" + CommonUtil.UrlEncode(httpRequest.BucketName);
}
if (!string.IsNullOrEmpty(httpRequest.ObjectKey))
{
response.SignUrl += "/" + CommonUtil.UrlEncode(httpRequest.ObjectKey, null, "/");
}
bool isFirst = true;
foreach (KeyValuePair <string, string> entry in httpRequest.Params)
{
if (isFirst)
{
response.SignUrl += "?";
isFirst = false;
}
else
{
response.SignUrl += "&";
}
response.SignUrl += CommonUtil.UrlEncode(entry.Key);
response.SignUrl += "=";
response.SignUrl += CommonUtil.UrlEncode(entry.Value);
}
if (!string.IsNullOrEmpty(this.sp.Token))
{
response.SignUrl += "&" + iheaders.SecurityTokenHeader() + "=" + this.sp.Token;
}
response.SignUrl += "&X-Amz-Signature=" + signature;
foreach (KeyValuePair <string, string> entry in httpRequest.Headers)
{
if (!entry.Key.Equals(Constants.CommonHeaders.Date))
{
response.ActualSignedRequestHeaders.Add(entry.Key, entry.Value);
}
}
return(response);
}
