public async static Task<OAuthToken> Rcv_Request_token()
{
SortedDictionary<string, string> sd = new SortedDictionary<string, string>();
string oauth_nonce = Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(DateTime.Now.Ticks.ToString()));
string utc_time = Globalv.unix_timestamp().ToString();
sd.Add("oauth_version", "1.0");
sd.Add("oauth_callback", "oob");
sd.Add("oauth_consumer_key", Globalv.ConsumerKey);
sd.Add("oauth_nonce", oauth_nonce);
sd.Add("oauth_signature_method", "HMAC-SHA1");
sd.Add("oauth_timestamp", utc_time);
string baseString = String.Empty;
baseString += "POST" + "&";
baseString += Uri.EscapeDataString(
"https://api.twitter.com/oauth/request_token")
+ "&";
foreach (KeyValuePair<string, string> entry in sd)
{
baseString += Uri.EscapeDataString(entry.Key +
"=" + entry.Value + "&");
}
baseString =
baseString.Substring(0, baseString.Length - 3);
string consumerSecret = Globalv.ConsumerSecret;
string signingKey = Uri.EscapeDataString(consumerSecret) + "&";
// Create a MacAlgorithmProvider object for the specified algorithm.
MacAlgorithmProvider objMacProv = MacAlgorithmProvider.OpenAlgorithm("HMAC_SHA1");
// Demonstrate how to retrieve the name of the algorithm used.
String strNameUsed = objMacProv.AlgorithmName;
// Create a buffer that contains the the message to be signed.
BinaryStringEncoding encoding = BinaryStringEncoding.Utf8;
IBuffer buffMsg = CryptographicBuffer.ConvertStringToBinary(baseString, encoding);
// Create a key to be signed with the message.
IBuffer keyMaterial = CryptographicBuffer.ConvertStringToBinary(signingKey, BinaryStringEncoding.Utf8);
CryptographicKey hmacKey = objMacProv.CreateKey(keyMaterial);
// Sign the key and message together.
IBuffer buffHMAC = CryptographicEngine.Sign(hmacKey, buffMsg);
// Verify that the HMAC length is correct for the selected algorithm
if (buffHMAC.Length != objMacProv.MacLength)
{
throw new Exception("Error computing digest");
}
string signatureString = CryptographicBuffer.EncodeToBase64String(buffHMAC);
//prepare for sending
HttpClient cli = new HttpClient();
cli.DefaultRequestHeaders.ExpectContinue = false;
cli.DefaultRequestHeaders.ConnectionClose = true;
//auth headers
string authorizationHeaderParams = String.Empty;
//authorizationHeaderParams += "OAuth ";
authorizationHeaderParams += "oauth_nonce=" + "\"" + Uri.EscapeDataString(oauth_nonce) + "\",";
authorizationHeaderParams += "oauth_callback=" + "\"" + Uri.EscapeDataString("oob") + "\",";
authorizationHeaderParams += "oauth_signature_method=" + "\"" + Uri.EscapeDataString("HMAC-SHA1") + "\",";
authorizationHeaderParams += "oauth_timestamp=" + "\"" + Uri.EscapeDataString(utc_time) + "\",";
authorizationHeaderParams += "oauth_consumer_key=" + "\"" + Uri.EscapeDataString(Globalv.ConsumerKey) + "\",";
authorizationHeaderParams += "oauth_signature=" + "\"" + Uri.EscapeDataString(signatureString) + "\",";
authorizationHeaderParams += "oauth_version=" + "\"" + Uri.EscapeDataString("1.0") + "\"";
cli.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("OAuth", authorizationHeaderParams);
var MuTweetResponse = await cli.PostAsync(new Uri(@"https://api.twitter.com/oauth/request_token", UriKind.Absolute), null);
string resp = await MuTweetResponse.Content.ReadAsStringAsync();
string[] resp_split = resp.Split('&');
string requesttoken = resp_split[0].Substring(12);
string requesttokensecret = resp_split[1].Substring(19);
OAuthToken ret = new OAuthToken();
ret.Token = requesttoken;
ret.TokenSecret = requesttokensecret;
return ret;
}
public async static Task <OAuthToken> Rcv_Request_token()
{
SortedDictionary <string, string> sd = new SortedDictionary <string, string>();
string oauth_nonce = Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(DateTime.Now.Ticks.ToString()));
string utc_time = Globalv.unix_timestamp().ToString();
sd.Add("oauth_version", "1.0");
sd.Add("oauth_callback", "oob");
sd.Add("oauth_consumer_key", Globalv.ConsumerKey);
sd.Add("oauth_nonce", oauth_nonce);
sd.Add("oauth_signature_method", "HMAC-SHA1");
sd.Add("oauth_timestamp", utc_time);
string baseString = String.Empty;
baseString += "POST" + "&";
baseString += Uri.EscapeDataString(
"https://api.twitter.com/oauth/request_token")
+ "&";
foreach (KeyValuePair <string, string> entry in sd)
{
baseString += Uri.EscapeDataString(entry.Key +
"=" + entry.Value + "&");
}
baseString =
baseString.Substring(0, baseString.Length - 3);
string consumerSecret = Globalv.ConsumerSecret;
string signingKey = Uri.EscapeDataString(consumerSecret) + "&";
// Create a MacAlgorithmProvider object for the specified algorithm.
MacAlgorithmProvider objMacProv = MacAlgorithmProvider.OpenAlgorithm("HMAC_SHA1");
// Demonstrate how to retrieve the name of the algorithm used.
String strNameUsed = objMacProv.AlgorithmName;
// Create a buffer that contains the the message to be signed.
BinaryStringEncoding encoding = BinaryStringEncoding.Utf8;
IBuffer buffMsg = CryptographicBuffer.ConvertStringToBinary(baseString, encoding);
// Create a key to be signed with the message.
IBuffer keyMaterial = CryptographicBuffer.ConvertStringToBinary(signingKey, BinaryStringEncoding.Utf8);
CryptographicKey hmacKey = objMacProv.CreateKey(keyMaterial);
// Sign the key and message together.
IBuffer buffHMAC = CryptographicEngine.Sign(hmacKey, buffMsg);
// Verify that the HMAC length is correct for the selected algorithm
if (buffHMAC.Length != objMacProv.MacLength)
{
throw new Exception("Error computing digest");
}
string signatureString = CryptographicBuffer.EncodeToBase64String(buffHMAC);
//prepare for sending
HttpClient cli = new HttpClient();
cli.DefaultRequestHeaders.ExpectContinue = false;
cli.DefaultRequestHeaders.ConnectionClose = true;
//auth headers
string authorizationHeaderParams = String.Empty;
//authorizationHeaderParams += "OAuth ";
authorizationHeaderParams += "oauth_nonce=" + "\"" + Uri.EscapeDataString(oauth_nonce) + "\",";
authorizationHeaderParams += "oauth_callback=" + "\"" + Uri.EscapeDataString("oob") + "\",";
authorizationHeaderParams += "oauth_signature_method=" + "\"" + Uri.EscapeDataString("HMAC-SHA1") + "\",";
authorizationHeaderParams += "oauth_timestamp=" + "\"" + Uri.EscapeDataString(utc_time) + "\",";
authorizationHeaderParams += "oauth_consumer_key=" + "\"" + Uri.EscapeDataString(Globalv.ConsumerKey) + "\",";
authorizationHeaderParams += "oauth_signature=" + "\"" + Uri.EscapeDataString(signatureString) + "\",";
authorizationHeaderParams += "oauth_version=" + "\"" + Uri.EscapeDataString("1.0") + "\"";
cli.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("OAuth", authorizationHeaderParams);
var MuTweetResponse = await cli.PostAsync(new Uri(@"https://api.twitter.com/oauth/request_token", UriKind.Absolute), null);
string resp = await MuTweetResponse.Content.ReadAsStringAsync();
string[] resp_split = resp.Split('&');
string requesttoken = resp_split[0].Substring(12);
string requesttokensecret = resp_split[1].Substring(19);
OAuthToken ret = new OAuthToken();
ret.Token = requesttoken;
ret.TokenSecret = requesttokensecret;
return(ret);
}
