19# C#에서 Twitter 계정 검증

기본 계정 연동 정보는 구글과 비슷하다.

클라이언트에서 로그인을 하고 구글의 경우 ID를 트위터의 경우 auth, secret_key를 준다.

 

아래 oauth_token과 oauth_token_secert을 얻었으면 아래의 url에 정보를 전송해야 한다.

 

아래는 해외 사이트 찾아서 만든 테스트 코드.

 

using System; namespace twitter {     class Program     {         private const string API_KEY = "server_api_key";         private const string API_SECRET_KEY = "server_secert_key";         private const string CLIENT_TOKEN = "client_token";         private const string CLIENT_SECRET_KEY = "client_secret_key";           static void Main(string[] args)         {             TwitterUser twitterUser = new TwitterUser();             twitterUser.GetTwitterUser(API_KEY, API_SECRET_KEY, CLIENT_TOKEN, CLIENT_SECRET_KEY);         }     } }   main.cs

using System; using System.Collections.Generic; using System.Globalization; using System.Net; using System.Text; using Newtonsoft.Json.Linq;   namespace twitter {     public class TwitterUser     {         private const string OAuthVersion = "1.0";           public string GetTwitterUser(string ConsumerKey, string ConsumerSecret, string authToken, string secretToken)         {             // see all comments from GenerateTokenUrl as they apply here as well             string Nonce = GenerateNonce();             string timestamp = GenerateTimeStamp();             TwitterUrls TwitterUrls = new TwitterUrls("https://api.twitter.com/1.1/account/verify_credentials.json");             List<KeyValuePair<string, string>> Parameters = new List<KeyValuePair<string, string>>();             Parameters.Add(new KeyValuePair<string, string>("include_email", "false"));             Parameters.Add(new KeyValuePair<string, string>("oauth_consumer_key", ConsumerKey));             Parameters.Add(new KeyValuePair<string, string>("oauth_nonce", Nonce));             Parameters.Add(new KeyValuePair<string, string>("oauth_signature_method", "HMAC-SHA1"));             Parameters.Add(new KeyValuePair<string, string>("oauth_timestamp", timestamp));             Parameters.Add(new KeyValuePair<string, string>("oauth_token", authToken));             Parameters.Add(new KeyValuePair<string, string>("oauth_version", OAuthVersion));             string signature = TwitterUrls.GenerateSignature(ConsumerSecret, Parameters, secretToken);             Parameters.Insert(3, new KeyValuePair<string, string>("oauth_signature", signature));               string retVal = string.Empty;               string url = TwitterUrls.GenerateCallingUrls(Parameters);               using (WebClient client = new WebClient())             {                 retVal = client.DownloadString(url);                 JObject product = JObject.Parse(retVal);                   string id = product["id"].ToString();             }             return retVal;         }           private string GenerateNonce()         {             // found this solution here: http://www.i-avington.com/Posts/Post/making-a-twitter-oauth-api-call-using-c             return Convert.ToBase64String(new ASCIIEncoding().GetBytes(DateTime.Now.Ticks.ToString(CultureInfo.InvariantCulture)));         }           private string GenerateTimeStamp()         {             // this just returns a unix epoch timestamp             var _timeSpan = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0);             var _oathTimestamp = Convert.ToInt64(_timeSpan.TotalSeconds).ToString(CultureInfo.InvariantCulture);             return _oathTimestamp.ToString();         }     } }   TwitterUser.cs

 

using System; using System.Collections.Generic; using System.Security.Cryptography; using System.Text;   namespace twitter {     public class HashHMac     {         public string CreateHMacHash(string key, string message)         {             // found this solution here: http://stackoverflow.com/questions/8780261/hmc-sha1-hash-java-producing-different-hash-output-than-c-sharp             HMAC hasher = new HMACSHA1(Encoding.UTF8.GetBytes(key));             byte[] data = hasher.ComputeHash(Encoding.UTF8.GetBytes(message));             return Convert.ToBase64String(data);         }     } }   HashHMac.cs

 

using System; using System.Collections.Generic; using System.Text;   namespace twitter {     public class TwitterUrls     {         string _EndPointUrl = string.Empty;         URLEncoder urlEncoder = new URLEncoder();         public TwitterUrls(string EndPointUrl)         {             _EndPointUrl = EndPointUrl;         }         public string GenerateSignature(string ConsumerSecret, List<KeyValuePair<string, string>> Parameters, string TokenSecret = null)         {               string SignatureInner = string.Empty;             // start the string to be included in the signature with "GET&" ... again just modeling this after the PHP translation             string Signature = "GET&";             // the first & is not urlencoded             Signature += urlEncoder.UrlEncode(_EndPointUrl) + "&";             // loop over the parameters and add them to the signatures string             foreach (KeyValuePair<string, string> item in Parameters)             {                 if (item.Key == "oauth_callback")                 {                     // the callback url needs to be encoded twice, so do it first now                     SignatureInner += item.Key + "=" + urlEncoder.UrlEncode(item.Value) + "&";                 }                 else                 {                     SignatureInner += item.Key + "=" + item.Value + "&";                 }             }             // strip off the last "&"             SignatureInner = SignatureInner.Substring(0, SignatureInner.Length - 1);             // url encode the inner signature             SignatureInner = urlEncoder.UrlEncode(SignatureInner);             // add the inner signature to the signature             Signature += SignatureInner;             // url encode the whole thing and include the token secret as part of the key if it's passed in             return urlEncoder.UrlEncode(new HashHMac().CreateHMacHash(ConsumerSecret + "&" + (!string.IsNullOrEmpty(TokenSecret) ? TokenSecret : ""), Signature));         }           public string GenerateCallingUrls(List<KeyValuePair<string, string>> Parameters)         {             // this method generates the actual url to call, see comments from above method             string url = _EndPointUrl + "?";             foreach (KeyValuePair<string, string> item in Parameters)             {                 if (item.Key == "oauth_callback")                 {                     url += item.Key + "=" + urlEncoder.UrlEncode(item.Value) + "&";                 }                 else                 {                     url += item.Key + "=" + item.Value + "&";                 }             }             url = url.Substring(0, url.Length - 1);             return url;         }     } }   TwitterUrls.cs

 

using System; using System.Collections.Generic; using System.Text; using System.Text.RegularExpressions;   namespace twitter {     public class URLEncoder     {         public string UrlEncode(string url)         {             // found this method here: http://www.codeproject.com/Questions/832905/Is-there-any-equivalent-for-rawurlencode-in-Csharp             Dictionary<string, string> toBeEncoded = new Dictionary<string, string>() { { "%", "%25" }, { "!", "%21" }, { "#", "%23" }, { " ", "%20" },         { "$", "%24" }, { "&", "%26" }, { "'", "%27" }, { "(", "%28" }, { ")", "%29" }, { "*", "%2A" }, { "+", "%2B" }, { ",", "%2C" },         { "/", "%2F" }, { ":", "%3A" }, { ";", "%3B" }, { "=", "%3D" }, { "?", "%3F" }, { "@", "%40" }, { "[", "%5B" }, { "]", "%5D" } };             Regex replaceRegex = new Regex(@"[%!# $&'()*+,/:;=?@\[\]]");             MatchEvaluator matchEval = match => toBeEncoded[match.Value];             string encoded = replaceRegex.Replace(url, matchEval);             return encoded;         }     } }   URLEncoder.cs

 

참조 사이트

https://developer.twitter.com/en/docs/basics/authentication/overview/3-legged-oauth

3-legged OAuth

https://developer.twitter.com/en/docs/accounts-and-users/manage-account-settings/api-reference/get-account-verify_credentials.html

GET account/verify_credentials

http://www.burritostand.com/log-in-to-twitter-with-oauth-and-c-sharp-and-get-twitter-user-email