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); }