/// <summary>
/// 获取规范化的头信息
/// </summary>
/// <param name="builder">http 请求信息</param>
/// <returns>规范化头信息字符串</returns>
private string GetCanonicalizedHeaderString(SdkHttpFullRequestBuilder builder)
{
var headers = builder.GetHeaders();
var keys = headers.Keys;
List <string> keysList = keys.ToList().OrderBy(p => p.ToLower(CultureInfo.GetCultureInfo("en-US"))).ToList();
StringBuilder stringBuilder = new StringBuilder();
foreach (var item in keysList)
{
if (ShouldExcludeHeaderFromSigning(item))
{
continue;
}
string key = item.ToLower(CultureInfo.GetCultureInfo("en-US"));
foreach (var headerValue in headers[item])
{
string headerCompactedValue = StringUtils.AppendCompactedString(key);
stringBuilder.Append(key).Append(":");
if (headerValue != null)
{
string headerValueCompactedValue = StringUtils.AppendCompactedString(headerValue);
stringBuilder.Append(headerValueCompactedValue);
}
stringBuilder.Append("\n");
}
}
return(stringBuilder.ToString());
}
/// <summary>
/// 签名的具体实现
/// </summary>
/// <param name="builder">http请求信息</param>
/// <param name="credentials">证书信息</param>
/// <returns>请求后的http 信息</returns>
private SdkHttpFullRequestBuilder DoSign(SdkHttpFullRequestBuilder builder, Credentials credentials)
{
Credentials sanitizedCredentials = SanitizeCredentials(credentials);
if (credentials.GetType() == typeof(SessionCredentials))
{
AddSessionCredentials(builder, (SessionCredentials)credentials);
}
//20180627T065220Z
//_overrddenDate = new DateTime(2018,6,27,6, 52, 20);
SignerRequestParams signerRequestParams = new SignerRequestParams(builder, _overrddenDate,
RegionName, ServiceName, ParameterConstant.JDCLOUD2_SIGNING_ALGORITHM);
// SignerRequestParams
AddHostHeader(ref builder);
builder.Header(ParameterConstant.X_JDCLOUD_DATE, signerRequestParams.FormattedSigningDateTime);
string contentSha256 = string.Empty;
if (builder.GetHeaders() != null && builder.GetHeaders().ContainsKey(ParameterConstant.X_JDCLOUD_CONTENT_SHA256) &&
builder.GetHeaders()[ParameterConstant.X_JDCLOUD_CONTENT_SHA256] != null &&
builder.GetHeaders()[ParameterConstant.X_JDCLOUD_CONTENT_SHA256].Count > 0)
{
contentSha256 = builder.GetHeaders()[ParameterConstant.X_JDCLOUD_CONTENT_SHA256][0];
}
else
{
contentSha256 = CalculateContentHash(builder);
}
string canonicalRequest = CreateCanonicalRequest(builder, contentSha256);
string stringToSign = CreateStringToSign(canonicalRequest, signerRequestParams);
byte[] signingKey = deriveSigningKey(credentials, signerRequestParams);
byte[] signature = ComputeSignature(stringToSign, signingKey);
builder.Header(ParameterConstant.AUTHORIZATION, BuildAuthorizationHeader(builder, signature, credentials, signerRequestParams));
return(builder);
}
/// <summary>
/// 生成签名头信息字符串
/// </summary>
/// <param name="builder">http 请求信息</param>
/// <returns>签名头信息字符串</returns>
private string GetSignedHeadersString(SdkHttpFullRequestBuilder builder)
{
var headers = builder.GetHeaders();
var keys = headers.Keys;
List <string> keysList = keys.ToList().OrderBy(p => p.ToLower(CultureInfo.GetCultureInfo("en-US"))).ToList();
StringBuilder stringBuilder = new StringBuilder();
foreach (String header in keysList)
{
if (ShouldExcludeHeaderFromSigning(header))
{
continue;
}
if (stringBuilder.Length > 0)
{
stringBuilder.Append(";");
}
stringBuilder.Append(header.ToLower(CultureInfo.GetCultureInfo("en-US")));
}
return(stringBuilder.ToString());
}