public string GetAuthorizationHeader(string uri, string method, ITwitterParameters parameters)
{
this.OAuthTimestamp = GenerateTimestamp();
this.OAuthNonce = GenerateNonce();
this.OAuthSignature = CalculateSignature(uri, method, parameters);
return(string.Format("OAuth {0}", EncodeRequestParameters(this.parameters)));
}
private string GetSignatureBase(string url, string method, ITwitterParameters parameters)
{
var p = new Dictionary <string, string> ();
this.parameters.ToList().ForEach(x => {
if (!String.IsNullOrEmpty(x.Value) && !x.Key.EndsWith("_secret") && !x.Key.EndsWith("_signature"))
{
p.Add(x.Key, x.Value);
}
});
if (parameters != null)
{
parameters.Queries.ToList().ForEach(x => p.Add(x.Key, x.Value));
}
var stringBuilder = new StringBuilder();
p.OrderBy(x => x.Key).ToList().ForEach(x => stringBuilder.AppendFormat("{0}={1}&", UrlEncode(x.Key), UrlEncode(x.Value)));
var result = string.Format("{0}&{1}&{2}", method, UrlEncode(url), UrlEncode(stringBuilder.ToString().TrimEnd('&')));
return(result);
}
private string CalculateSignature(string uri, string method, ITwitterParameters parameters)
{
return(Convert.ToBase64String(GetSigningKey().ComputeHash(System.Text.Encoding.ASCII.GetBytes(GetSignatureBase(uri, method, parameters)))));
}
