private void AddOAuthData(IRestClient client, IRestRequest request, OAuthWorkflow workflow)
{
var url = client.BuildUri(request).ToString();
var queryStringStart = url.IndexOf('?');
if (queryStringStart != -1)
url = url.Substring(0, queryStringStart);
OAuthWebQueryInfo oauth;
var method = request.Method.ToString().ToUpperInvariant();
var parameters = new WebParameterCollection();
// include all GET and POST parameters before generating the signature
// according to the RFC 5849 - The OAuth 1.0 Protocol
// http://tools.ietf.org/html/rfc5849#section-3.4.1
// if this change causes trouble we need to introduce a flag indicating the specific OAuth implementation level,
// or implement a seperate class for each OAuth version
foreach (var p in client.DefaultParameters.Where(p => p.Type == ParameterType.GetOrPost))
{
parameters.Add(new WebPair(p.Name, p.Value.ToString()));
}
foreach (var p in request.Parameters.Where(p => p.Type == ParameterType.GetOrPost))
{
parameters.Add(new WebPair(p.Name, p.Value.ToString()));
}
switch (Type)
{
case OAuthType.RequestToken:
workflow.RequestTokenUrl = url;
oauth = workflow.BuildRequestTokenInfo(method, parameters);
break;
case OAuthType.AccessToken:
workflow.AccessTokenUrl = url;
oauth = workflow.BuildAccessTokenInfo(method, parameters);
break;
case OAuthType.ClientAuthentication:
workflow.AccessTokenUrl = url;
oauth = workflow.BuildClientAuthAccessTokenInfo(method, parameters);
break;
case OAuthType.ProtectedResource:
oauth = workflow.BuildProtectedResourceInfo(method, parameters, url);
break;
default:
throw new ArgumentOutOfRangeException();
}
switch (ParameterHandling)
{
case OAuthParameterHandling.HttpAuthorizationHeader:
parameters.Add("oauth_signature", oauth.Signature);
request.AddHeader("Authorization", GetAuthorizationHeader(parameters));
break;
case OAuthParameterHandling.UrlOrPostParameters:
parameters.Add("oauth_signature", oauth.Signature);
foreach (var parameter in parameters.Where(parameter => !parameter.Name.IsNullOrBlank() && parameter.Name.StartsWith("oauth_")))
{
request.AddParameter(parameter.Name, HttpUtility.UrlDecode(parameter.Value));
}
break;
default:
throw new ArgumentOutOfRangeException();
}
}
public void Authenticate(IRestClient client, IRestRequest request)
{
var workflow = new OAuthWorkflow
{
ConsumerKey = ConsumerKey,
ConsumerSecret = ConsumerSecret,
ParameterHandling = ParameterHandling,
SignatureMethod = SignatureMethod,
SignatureTreatment = SignatureTreatment,
Verifier = Verifier,
Version = Version,
CallbackUrl = CallbackUrl,
SessionHandle = SessionHandle,
Token = Token,
TokenSecret = TokenSecret,
ClientUsername = ClientUsername,
ClientPassword = ClientPassword
};
AddOAuthData(client, request, workflow);
}
