private Task <string> ExecuteRequestInternal()
{
return(Task.Run(() =>
{
HttpWebRequest Request;
String SigBaseStringParams = "";
foreach (var item in QueryParameters)
{
if (SigBaseStringParams != "")
{
SigBaseStringParams += "&";
}
SigBaseStringParams += item.Key + "=" + OAuthEncoding.Encode(item.Value);
}
Request =
(HttpWebRequest)
WebRequest.Create(Url +
(String.IsNullOrEmpty(SigBaseStringParams)
? ""
: "?" + SigBaseStringParams));
Request.Method = Method.ToUpper();
if (Method != "GET")
{
if (!String.IsNullOrEmpty(ContentType))
{
Request.ContentType = ContentType;
}
if (Data != null)
{
using (var stream = Request.GetRequestStreamAsync().Result)
{
var bytes = Encoding.UTF8.GetBytes(Data);
stream.Write(bytes, 0, bytes.Length);
}
}
}
String authHeader = "OAuth";
var orderedParameters = AuthParameters.OrderBy(d => d.Key);
foreach (var item in orderedParameters)
{
authHeader += (item.Key != orderedParameters.First().Key ? ", " : " ") +
item.Key + "=\"" + OAuthEncoding.Encode(item.Value) + "\"";
}
Request.Headers["Authorization"] = authHeader;
HttpWebResponse Response = (HttpWebResponse)Request.GetResponseAsync().Result;
StreamReader ResponseDataStream = new StreamReader(Response.GetResponseStream());
return ResponseDataStream.ReadToEnd();
}));
}
public OAuthRequest WithFormEncodedData(object data)
{
StringBuilder builder = new StringBuilder();
if (data != null)
{
#if WINMD
foreach (var item in data.GetType().GetTypeInfo().DeclaredProperties)
{
if (builder.Length > 0)
{
builder.Append("&");
}
var key = item.Name;
builder.Append(key);
object value = item.GetValue(data);
if (value != null)
{
var stringvalue = value.ToString();
FormParameters.Add(key, stringvalue);
builder.Append("=");
builder.Append(OAuthEncoding.Encode(stringvalue));
}
}
#else
foreach (var item in data.GetType().GetProperties())
{
if (builder.Length > 0)
{
builder.Append("&");
}
var key = item.Name;
builder.Append(key);
object value = item.GetValue(data, null);
if (value != null)
{
var stringvalue = value.ToString();
FormParameters.Add(key, stringvalue);
builder.Append("=");
builder.Append(OAuthEncoding.Encode(stringvalue));
}
}
#endif
}
Data = builder.ToString();
return(SetContentTypeTo(@"application/x-www-form-urlencoded; charset: UTF-8"));
}
public OAuthRequest Sign(string tokenSecret)
{
String SigBaseStringParams = "";
var orderedParameters = AllParameters.OrderBy(d => d.Key);
foreach (var item in orderedParameters)
{
if (SigBaseStringParams != "")
{
SigBaseStringParams += "&";
}
SigBaseStringParams += item.Key + "=" + item.Value;
}
String SigBaseString = Method.ToUpper() + "&";
SigBaseString += OAuthEncoding.Encode(Url.ToString()) + "&" + OAuthEncoding.Encode(SigBaseStringParams);
String Signature;
#if WINMD
IBuffer KeyMaterial = CryptographicBuffer.ConvertStringToBinary(Context.ConsumerToken.Secret + "&" + tokenSecret, BinaryStringEncoding.Utf8);
MacAlgorithmProvider HmacSha1Provider = MacAlgorithmProvider.OpenAlgorithm("HMAC_SHA1");
CryptographicKey MacKey = HmacSha1Provider.CreateKey(KeyMaterial);
IBuffer DataToBeSigned = CryptographicBuffer.ConvertStringToBinary(SigBaseString, BinaryStringEncoding.Utf8);
IBuffer SignatureBuffer = CryptographicEngine.Sign(MacKey, DataToBeSigned);
Signature = CryptographicBuffer.EncodeToBase64String(SignatureBuffer);
#else
HMACSHA1 myhmacsha1 = new HMACSHA1(Encoding.UTF8.GetBytes(Context.ConsumerToken.Secret + "&" + tokenSecret));
byte[] byteArray = Encoding.UTF8.GetBytes(SigBaseString);
MemoryStream stream = new MemoryStream(byteArray);
byte[] hashValue = myhmacsha1.ComputeHash(stream);
Signature = System.Convert.ToBase64String(hashValue);
#endif
AuthParameters.Add(OAuthParameters.SIGNATURE, Signature);
return(this);
}