public void RequestForAccessToken()
{
QueryParameters oauthParameters = new QueryParameters();
string signature = "";
OAuthHelper oauthHelper = new OAuthHelper();
////1. Generate Signature
oauthParameters.Add("oauth_consumer_key", provider.Consumerkey);
oauthParameters.Add("oauth_token", ConnectionToken.AuthorizationToken);
oauthParameters.Add("oauth_signature_method", provider.SignatureMethod.ToString());
oauthParameters.Add("oauth_timestamp", oauthHelper.GenerateTimeStamp());
oauthParameters.Add("oauth_nonce", oauthHelper.GenerateNonce());
oauthParameters.Add("oauth_version", "1.0");
oauthParameters.Add("oauth_verifier", ConnectionToken.OauthVerifier);
signature = oauthHelper.GenerateSignature(new Uri(provider.AccessTokenEndpoint), oauthParameters, provider.Consumerkey, provider.Consumersecret, provider.SignatureMethod, provider.TransportName, ConnectionToken.TokenSecret);
oauthParameters.Add("oauth_signature", signature);
//2. Notify Consumer (if applicable)
BeforeRequestingAccessToken(oauthParameters); // hook called
//3.Connect and obtain Token
string targetUrl = provider.AccessTokenEndpoint + "?" +
oauthHelper.GetAuthorizationUrlParameters(oauthParameters);
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(targetUrl);
request.Method = provider.TransportName.ToString();
//request.Headers.Add("Authorization", oauthHelper.GetAuthorizationHeader(oauthParameters));
request.ContentLength = 0;
string response = "";
try
{
logger.Debug("Requesting Access Token at " + provider.AccessTokenEndpoint);
using (HttpWebResponse webResponse = (HttpWebResponse)request.GetResponse())
using (Stream responseStream = webResponse.GetResponseStream())
using (StreamReader reader = new StreamReader(responseStream))
{
response = reader.ReadToEnd();
var responseCollection = Utility.GetQuerystringParameters(response);
HandleAccessTokenResponse(responseCollection);
AfterGettingAccessToken(responseCollection, ConnectionToken);
}
}
catch (Exception ex)
{
logger.Error(ErrorMessages.AccessTokenRequestError(provider.AccessTokenEndpoint, oauthParameters), ex);
throw new OAuthException(ErrorMessages.AccessTokenRequestError(provider.AccessTokenEndpoint, oauthParameters), ex);
}
}
public void RequestForAccessToken()
{
QueryParameters oauthParameters = new QueryParameters();
string signature = "";
OAuthHelper oauthHelper = new OAuthHelper();
////1. Generate Signature
oauthParameters.Add("oauth_consumer_key", provider.Consumerkey);
oauthParameters.Add("oauth_token", Utility.UrlEncode(ConnectionToken.RequestToken));
oauthParameters.Add("oauth_signature_method", provider.SignatureMethod.ToString());
oauthParameters.Add("oauth_timestamp", oauthHelper.GenerateTimeStamp());
oauthParameters.Add("oauth_nonce", oauthHelper.GenerateNonce());
oauthParameters.Add("oauth_version", "1.0");
BeforeRequestingAccessToken(oauthParameters); // hook called
signature = oauthHelper.GenerateSignature(new Uri(provider.AccessTokenEndpoint), oauthParameters, provider.Consumerkey, provider.Consumersecret, provider.SignatureMethod, provider.TransportName, string.Empty);
oauthParameters.Add("oauth_signature", Utility.UrlEncode(signature));
//2. Notify Consumer (if applicable)
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(provider.AccessTokenEndpoint + "?" + oauthParameters.ToString().Replace("HMACSHA1", "HMAC-SHA1"));
request.Method = "GET";// always get irrespective of provider.TransportName.ToString();
request.ContentLength = 0;
string response = "";
try
{
logger.Debug("Requesting Access Token at: " + request.RequestUri + Environment.NewLine + "Request Parameters: " + oauthParameters.ToString());
using (HttpWebResponse webResponse = (HttpWebResponse)request.GetResponse())
using (Stream responseStream = webResponse.GetResponseStream())
using (StreamReader reader = new StreamReader(responseStream))
{
response = reader.ReadToEnd();
HandleAccessTokenResponse(Utility.GetQuerystringParameters(response));
}
}
catch (Exception ex)
{
logger.Debug(ErrorMessages.AccessTokenRequestError(request.RequestUri.ToString(), oauthParameters), ex);
throw new OAuthException(ErrorMessages.AccessTokenRequestError(request.RequestUri.ToString(), oauthParameters), ex);
}
}
public void RequestForAccessToken(TRANSPORT_METHOD method = TRANSPORT_METHOD.GET)
{
if (method != TRANSPORT_METHOD.GET && method != TRANSPORT_METHOD.POST)
{
throw new OAuthException("Invalid Verb used for requesting AccessToken. Supported verbs are GET/POST.");
}
UriBuilder ub = new UriBuilder(provider.AccessTokenEndpoint);
//logger.LogAuthorizationRequest(ub.ToString());
HttpWebRequest request;
if (method == TRANSPORT_METHOD.POST)
{
request = (HttpWebRequest)WebRequest.Create(ub.ToString());
string postData = "code=" + ConnectionToken.Code;
postData += ("&client_id=" + provider.Consumerkey);
postData += ("&client_secret=" + provider.Consumersecret);
postData += ("&redirect_uri=" + ConnectionToken.ProviderCallbackUrl);
postData += ("&grant_type=authorization_code");
request.Method = "POST";
byte[] byteArray = Encoding.UTF8.GetBytes(postData);
// Set the ContentType property of the WebRequest.
request.ContentType = "application/x-www-form-urlencoded";
// Set the ContentLength property of the WebRequest.
request.ContentLength = byteArray.Length;
// Get the request stream.
Stream dataStream = request.GetRequestStream();
// Write the data to the request stream.
dataStream.Write(byteArray, 0, byteArray.Length);
// Close the Stream object.
dataStream.Close();
// Get the response.
}
else
{
ub.SetQueryparameter("client_id", provider.Consumerkey);
ub.SetQueryparameter("client_secret", provider.Consumersecret);
ub.SetQueryparameter("code", ConnectionToken.Code);
ub.SetQueryparameter("redirect_uri", ConnectionToken.ProviderCallbackUrl);
ub.SetQueryparameter("grant_type", "authorization_code");
request = (HttpWebRequest)WebRequest.Create(ub.ToString());
request.Method = "POST";
}
try
{
logger.Debug("Requesting Access Token at " + ub.ToString());
using (HttpWebResponse webResponse = (HttpWebResponse)request.GetResponse())
using (Stream responseStream = webResponse.GetResponseStream())
using (StreamReader reader = new StreamReader(responseStream))
{
string authToken = reader.ReadToEnd();
HandleAccessTokenResponse(authToken);
}
}
catch (Exception ex)
{
logger.Error(ErrorMessages.AccessTokenRequestError(request.RequestUri.ToString(), new QueryParameters()), ex);
throw new OAuthException(ErrorMessages.AccessTokenRequestError(request.RequestUri.ToString(), new QueryParameters()), ex);
}
}
