/// <summary>
/// Over ride the to string method.
/// </summary>
/// <returns></returns>
public override string ToString()
{
return(UriUtility.FormatTokenForResponse(this));
}
/// <summary>
/// Create a access token from the request.
/// </summary>
/// <param name="rawUri">A System.Uri object containing information regarding the URL of the current request.</param>
/// <param name="queryString">The collection of HTTP query string variables.</param>
/// <param name="form">The collection of form variables.</param>
/// <param name="headers">The collection of HTTP headers.</param>
/// <param name="cookies">The collection of cookies sent by the client.</param>
/// <returns>The token if successful; else null.</returns>
public string CreateAccessToken(Uri rawUri, NameValueCollection queryString,
NameValueCollection form, NameValueCollection headers, HttpCookieCollection cookies)
{
try
{
// Make sure that all the passed parameters are valid.
if (rawUri == null)
{
throw new ArgumentNullException("rawUri");
}
if (queryString == null)
{
throw new ArgumentNullException("queryString");
}
if (form == null)
{
throw new ArgumentNullException("form");
}
if (headers == null)
{
throw new ArgumentNullException("headers");
}
if (cookies == null)
{
throw new ArgumentNullException("cookies");
}
// Make sure that all the maditory OAuth parameters
// have been passed to the provider from the consumer
OAuthProblemReport validate = new OAuthProblemReport(queryString);
validate.ValidateAccessParametersAbsent(queryString);
string validationError = validate.ToString();
// If any of the maditory OAuth parameters are missing.
if (!String.IsNullOrEmpty(validationError))
{
throw new OAuthException(OAuthProblemParameters.ParameterAbsent, "Absent Parameters", new Exception(validationError));
}
// Create an assign each manditory parameter.
IOAuthContext context = new OAuthContextProvider();
context.RawUri = rawUri;
context.RequestMethod = "GET";
context.Headers = headers;
context.QueryParameters = queryString;
context.FormEncodedParameters = form;
context.Token = queryString[Parameters.OAuth_Token];
context.Nonce = queryString[Parameters.OAuth_Nonce];
context.ConsumerKey = queryString[Parameters.OAuth_Consumer_Key];
context.SignatureMethod = queryString[Parameters.OAuth_Signature_Method];
context.Timestamp = queryString[Parameters.OAuth_Timestamp];
context.Signature = queryString[Parameters.OAuth_Signature];
context.Verifier = queryString[Parameters.OAuth_Verifier];
// Assign each optional parameter
GetOptionalAccessParameters(context, queryString);
// Create the access token from the stores.
IToken token = _oAuthProvider.ExchangeRequestTokenForAccessToken(context);
return(UriUtility.FormatTokenForResponse(token));
}
catch (OAuthException aex)
{
// Get the current token errors.
_tokenError = aex.Report.ToString();
return(null);
}
catch (Exception ex)
{
// Transform the execption.
OAuthException OAuthException =
new OAuthException(OAuthProblemParameters.ParameterRejected, ex.Message, ex);
// Get the current token errors.
_tokenError = OAuthException.Report.ToString();
return(null);
}
}