private static string GenerateSignatureBase(HttpMethod httpMethod, string normalizedUrl, string normalizedParameters)
{
StringBuilder signatureBase = new StringBuilder();
signatureBase.AppendFormat("{0}&", httpMethod.ToString().ToUpperInvariant());
signatureBase.AppendFormat("{0}&", ZAppHelper.URLEncode(normalizedUrl));
signatureBase.AppendFormat("{0}", ZAppHelper.URLEncode(normalizedParameters));
return(signatureBase.ToString());
}
private static string GenerateSignature(string signatureBase, string consumerSecret, string userSecret = null)
{
using (HMACSHA1 hmacsha1 = new HMACSHA1())
{
string key = string.Format("{0}&{1}", Uri.EscapeDataString(consumerSecret),
string.IsNullOrEmpty(userSecret) ? string.Empty : Uri.EscapeDataString(userSecret));
hmacsha1.Key = Encoding.ASCII.GetBytes(key);
byte[] dataBuffer = Encoding.ASCII.GetBytes(signatureBase);
byte[] hashBytes = hmacsha1.ComputeHash(dataBuffer);
string signature = Convert.ToBase64String(hashBytes);
return(ZAppHelper.URLEncode(signature));
}
}
public static string GetAuthorizationURL(string requestTokenResponse, OAuthInfo oauth, string authorizeURL, string callback = null)
{
string url = null;
NameValueCollection args = HttpUtility.ParseQueryString(requestTokenResponse);
if (args[ParameterToken] != null)
{
oauth.AuthToken = args[ParameterToken];
url = string.Format("{0}?{1}={2}", authorizeURL, ParameterToken, oauth.AuthToken);
if (!string.IsNullOrEmpty(callback))
{
url += string.Format("&{0}={1}", ParameterCallback, ZAppHelper.URLEncode(callback));
}
if (args[ParameterTokenSecret] != null)
{
oauth.AuthSecret = args[ParameterTokenSecret];
}
}
return(url);
}
private static string NormalizeParameters(Dictionary <string, string> parameters)
{
return(string.Join("&", parameters.OrderBy(x => x.Key).ThenBy(x => x.Value).Select(x => x.Key + "=" + ZAppHelper.URLEncode(x.Value)).ToArray()));
}