/// <summary>
/// Generates a signature using the specified signatureType
/// </summary>
/// <param name="url">The full url that needs to be signed including its non OAuth url parameters</param>
/// <param name="consumerKey">The consumer key</param>
/// <param name="consumerSecret">The consumer seceret</param>
/// <param name="token">The token, if available. If not available pass null or an empty String</param>
/// <param name="tokenSecret">The token secret, if available. If not available pass null or an empty String</param>
/// <param name="httpMethod">The http method used. Must be a valid HTTP method verb (POST,GET,PUT, etc)</param>
/// <param name="nonce"></param>
/// <param name="signatureType">The type of signature to use</param>
/// <param name="timeStamp"></param>
/// <returns>A base64 String of the hash value</returns>
public static SignatureInfo GenerateSignature(Uri url, String consumerKey, String consumerSecret, String token, String tokenSecret, String httpMethod, String timeStamp, String nonce, SignatureTypes signatureType)
{
SignatureInfo si = new SignatureInfo();
switch (signatureType)
{
case SignatureTypes.PLAINTEXT:
si.Signature = OAuthClient.UrlEncode(String.Format("{0}&{1}", consumerSecret, tokenSecret));
return(si);
case SignatureTypes.HMACSHA1:
si = GenerateSignatureBase(url, consumerKey, token, httpMethod, timeStamp, nonce, Key.HMACSHA1SignatureType);
HMACSHA1 hs = new HMACSHA1();
hs.Key = OAuthClient.GenerateSignatureEncoding.GetBytes(String.Format("{0}&{1}", OAuthClient.UrlEncode(consumerSecret), String.IsNullOrEmpty(tokenSecret) ? "" : OAuthClient.UrlEncode(tokenSecret)));
si.Signature = GenerateSignatureUsingHash(si.Signature, hs);
return(si);
case SignatureTypes.RSASHA1:
throw new NotImplementedException();
}
throw new ArgumentException("Unknown signature type", "signatureType");
}
/// <summary>
///
/// </summary>
/// <param name="authorizeInfo"></param>
/// <param name="oauthVerifier"></param>
/// <returns></returns>
public AccessTokenInfo GetAccessToken(AuthorizeInfo authorizeInfo, String oauthVerifier)
{
AuthorizeInfo ai = authorizeInfo;
SignatureInfo si = OAuthClient.GenerateSignature(new Uri(this.AccessTokenUrl), this.ConsumerKey, this.ConsumerSecret
, ai.RequestToken, ai.RequestTokenSecret, "POST", OAuthClient.GenerateTimeStamp(), OAuthClient.GenerateNonce()
, OAuthClient.SignatureTypes.HMACSHA1);
HttpClient cl = new HttpClient(String.Format("{0}?{1}&oauth_verifier={2}&oauth_signature={3}", this.AccessTokenUrl
, si.NormalizedRequestParameters, oauthVerifier, si.Signature));
String s = cl.GetBodyText();
return(AccessTokenInfo.Create(s, "oauth_token", "oauth_token_secret"));
}
