public static async Task <String> GetUserInfo(TwitterAccessToken accessToken, String verifier)
{
String result = String.Empty;
try
{
string nonce = OAuthUtil.GetNonce();
string timeStamp = OAuthUtil.GetTimeStamp();
String url = "https://api.twitter.com/1.1/account/verify_credentials.json";
// prepare base string parameters, include oauth_token, oauth_verifier
var baseStringParams = new Dictionary <string, string> {
{ "oauth_consumer_key", ConsumerKey },
{ "oauth_nonce", nonce },
{ "oauth_signature_method", "HMAC-SHA1" },
{ "oauth_timestamp", timeStamp },
{ "oauth_token", accessToken.oauth_token },
{ "oauth_verifier", verifier },
{ "oauth_version", "1.0" }
};
string paramsBaseString = baseStringParams
.OrderBy(kv => kv.Key)
.Select(kv => kv.Key + "=" + kv.Value)
.Aggregate((i, j) => i + "&" + j);
string sigBaseString = "GET&";
// signature base string uses base url
sigBaseString += Uri.EscapeDataString(url) + "&" + Uri.EscapeDataString(paramsBaseString);
// get signature by comsumer secret and oauth_token_secret
string signature = OAuthUtil.GetSignature(sigBaseString, ConsumerSecret, accessToken.oauth_token_secret);
// build header
string data = "oauth_consumer_key=\"" + ConsumerKey +
"\", oauth_nonce=\"" + nonce +
"\", oauth_signature=\"" + Uri.EscapeDataString(signature) +
"\", oauth_signature_method=\"HMAC-SHA1\", oauth_timestamp=\"" + timeStamp +
"\", oauth_token=\"" + accessToken.oauth_token +
"\", oauth_verifier=\"" + verifier +
"\", oauth_version=\"1.0\"";
HttpClient httpClient = new HttpClient();
HttpRequestMessage requestMsg = new HttpRequestMessage();
requestMsg.Method = new HttpMethod("GET");
requestMsg.RequestUri = new Uri(url);
requestMsg.Headers.Authorization = new HttpCredentialsHeaderValue("OAuth", data);
var response = await httpClient.SendRequestAsync(requestMsg);
result = await response.Content.ReadAsStringAsync();
}
catch (Exception)
{
throw;
}
return(result);
}
/// <summary>
/// 請求取得 Request Token。
/// </summary>
/// <returns></returns>
private static async Task <string> GetTwitterRequestTokenAsync()
{
string TwitterUrl = "https://api.twitter.com/oauth/request_token";
string nonce = OAuthUtil.GetNonce();
string timeStamp = OAuthUtil.GetTimeStamp();
string SigBaseStringParams = "oauth_callback=" + Uri.EscapeDataString(CallbackUrl);
SigBaseStringParams += "&" + "oauth_consumer_key=" + ConsumerKey;
SigBaseStringParams += "&" + "oauth_nonce=" + nonce;
SigBaseStringParams += "&" + "oauth_signature_method=HMAC-SHA1";
SigBaseStringParams += "&" + "oauth_timestamp=" + timeStamp;
SigBaseStringParams += "&" + "oauth_version=1.0";
string SigBaseString = "GET&";
SigBaseString += Uri.EscapeDataString(TwitterUrl) + "&" + Uri.EscapeDataString(SigBaseStringParams);
string Signature = OAuthUtil.GetSignature(SigBaseString, ConsumerSecret);
TwitterUrl += "?" + SigBaseStringParams + "&oauth_signature=" + Uri.EscapeDataString(Signature);
HttpClient httpClient = new HttpClient();
string GetResponse = await httpClient.GetStringAsync(new Uri(TwitterUrl));
string request_token = null;
string oauth_token_secret = null;
string[] keyValPairs = GetResponse.Split('&');
for (int i = 0; i < keyValPairs.Length; i++)
{
string[] splits = keyValPairs[i].Split('=');
switch (splits[0])
{
case "oauth_token":
request_token = splits[1];
break;
case "oauth_token_secret":
oauth_token_secret = splits[1];
break;
}
}
return(request_token);
}
public static async Task <TwitterAccessToken> GetAccessToken(String token, String verifier)
{
String TwitterUrl = "https://api.twitter.com/oauth/access_token";
string timeStamp = OAuthUtil.GetTimeStamp();
string nonce = OAuthUtil.GetNonce();
String SigBaseStringParams = "oauth_consumer_key=" + ConsumerKey;
SigBaseStringParams += "&" + "oauth_nonce=" + nonce;
SigBaseStringParams += "&" + "oauth_signature_method=HMAC-SHA1";
SigBaseStringParams += "&" + "oauth_timestamp=" + timeStamp;
SigBaseStringParams += "&" + "oauth_token=" + token;
SigBaseStringParams += "&" + "oauth_version=1.0";
String SigBaseString = "POST&";
SigBaseString += Uri.EscapeDataString(TwitterUrl) + "&" + Uri.EscapeDataString(SigBaseStringParams);
String Signature = OAuthUtil.GetSignature(SigBaseString, ConsumerSecret);
HttpStringContent httpContent = new HttpStringContent("oauth_verifier=" + verifier, Windows.Storage.Streams.UnicodeEncoding.Utf8);
httpContent.Headers.ContentType = HttpMediaTypeHeaderValue.Parse("application/x-www-form-urlencoded");
string authorizationHeaderParams = "oauth_consumer_key=\"" + ConsumerKey + "\", oauth_nonce=\"" + nonce +
"\", oauth_signature_method=\"HMAC-SHA1\", oauth_signature=\"" + Uri.EscapeDataString(Signature) +
"\", oauth_timestamp=\"" + timeStamp + "\", oauth_token=\"" + Uri.EscapeDataString(token) +
"\", oauth_version=\"1.0\"";
HttpClient httpClient = new HttpClient();
httpClient.DefaultRequestHeaders.Authorization = new HttpCredentialsHeaderValue("OAuth", authorizationHeaderParams);
var httpResponseMessage = await httpClient.PostAsync(new Uri(TwitterUrl), httpContent);
string response = await httpResponseMessage.Content.ReadAsStringAsync();
String[] Tokens = response.Split('&');
string oauth_token_secret = null;
string access_token = null;
string screen_name = null;
String user_id = null;
TwitterAccessToken user = new TwitterAccessToken();
for (int i = 0; i < Tokens.Length; i++)
{
String[] splits = Tokens[i].Split('=');
switch (splits[0])
{
case "screen_name":
screen_name = splits[1];
break;
case "user_id":
user_id = splits[1];
break;
case "oauth_token":
access_token = splits[1];
break;
case "oauth_token_secret":
oauth_token_secret = splits[1];
break;
}
}
user.user_id = user_id;
user.screen_name = screen_name;
user.oauth_token = access_token;
user.oauth_token_secret = oauth_token_secret;
return(user);
}
