private static void UpdateRequestHeader(IRestRequest request, string name, object value)
{
if (string.IsNullOrEmpty(name))
{
// Do nothing
return;
}
request.AddOrUpdateHeader(name, value);
}
public void Sign(Uri baseUri, IRestRequest request)
{
if (baseUri == null)
{
throw new ArgumentNullException(nameof(baseUri));
}
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
// Build the full request URI
var fullUri = new StringBuilder();
fullUri.Append(baseUri.ToString().TrimEnd('/'));
var resource = request.Resource;
if (!string.IsNullOrEmpty(resource))
{
resource = resource.TrimStart('.');
resource = resource.TrimStart('/');
fullUri.Append("/").Append(resource);
}
// Add query params
var parameterString = new StringBuilder();
foreach (var requestParameter in request.Parameters.Where(p => p.Type == ParameterType.QueryString))
{
parameterString
.Append(parameterString.Length > 0 ? "&" : string.Empty)
.Append(Uri.EscapeDataString(requestParameter.Name))
.Append("=")
.Append(Uri.EscapeDataString(requestParameter.Value as string));
}
if (parameterString.Length > 0)
{
fullUri.Append("?").Append(parameterString);
}
// Fix URL segments
fullUri = request.Parameters
.Where(p => p.Type == ParameterType.UrlSegment)
.Aggregate(fullUri, (current, requestParameter) => current.Replace($"{{{requestParameter.Name}}}", requestParameter.Value.ToString()));
// Read the body
var bodyParam = request.Parameters.FirstOrDefault(param => param.Type == ParameterType.RequestBody);
var payload = bodyParam is null ? string.Empty : bodyParam.Value.ToString();
// Generate the header and add it to the request
var methodString = request.Method.ToString();
var header = OAuth.GetAuthorizationHeader(fullUri.ToString(), methodString, payload, Encoding, ConsumerKey, SigningKey);
request.AddOrUpdateHeader(OAuth.AuthorizationHeaderName, header);
}