private static DateTime InitializeHeaders(HmacSigningResult result)
{
var dt = DateTime.UtcNow;
result.Headers.Add(HeaderKeys.XFeiniuBusDateHeader,
dt.ToString(Constants.Iso8601BasicDateTimeFormat, CultureInfo.InvariantCulture));
return(dt);
}
private HmacSigningResult SignRequest(SigningContext ctx)
{
var result = new HmacSigningResult();
if (ctx.Header.ContainsKey(HeaderKeys.HostHeader))
{
ctx.Header.Remove(HeaderKeys.HostHeader);
}
var hostHeader = ctx.Endpoint.Host;
if (!ctx.Endpoint.IsDefaultPort)
{
hostHeader += ":" + ctx.Endpoint.Port;
}
ctx.Header.Add(HeaderKeys.HostHeader, hostHeader);
result.Headers.Add(HeaderKeys.HostHeader, ctx.Header[HeaderKeys.HostHeader]);
var signedAt = InitializeHeaders(result);
var credentialString = BuildCredentialString(signedAt);
var bodyHash = SetRequestBodyHash(ctx.Body);
var sortedHeaders = SortAndPruneHeaders(ctx.Header);
var canonicalizedHeaderNames = CanonicalizeHeaderNames(sortedHeaders);
var parametersToCanonicalize = GetParametersToCanonicalize(ctx.Query);
var canonicalQueryParams = CanonicalizeQueryParameters(parametersToCanonicalize);
var canonicalRequest =
CanonicalizeRequest(ctx.Endpoint, ctx.Method, sortedHeaders, canonicalQueryParams, bodyHash);
var signature = ComputeSignature(ctx.Key, signedAt, credentialString, canonicalRequest);
result.Signature = signature;
var authorizationHeader = new StringBuilder();
authorizationHeader.Append(Constants.FeiniuBus1AlgorithmTag);
authorizationHeader.AppendFormat(" {0}={1}/{2},", Constants.Credential, ctx.Identifier, credentialString);
authorizationHeader.AppendFormat("{0}={1},", Constants.SignedHeaders, canonicalizedHeaderNames);
authorizationHeader.AppendFormat("{0}={1}", Constants.Signature, signature);
result.Headers.Add(HeaderKeys.AuthorizationHeader, authorizationHeader.ToString());
return(result);
}