using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Net; using System.IO; using System.Collections.Specialized; namespace oAuthExample { public class oAuthTumblr : OAuthBase { public enum Method { GET, POST }; public const string REQUEST_TOKEN = "http://www.tumblr.com/oauth/request_token"; public const string AUTHORIZE = "http://www.tumblr.com/oauth/authorize"; public const string ACCESS_TOKEN = "http://www.tumblr.com/oauth/access_token"; public const string XAUTH_ACCESS_TOKEN = "https://www.tumblr.com/oauth/access_token"; private string _consumerKey = ""; private string _consumerSecret = ""; private string _token = ""; private string _tokenSecret = ""; private string _verifier = ""; private string _xAuthUsername = ""; private string _xAuthPassword = ""; /// <summary> /// Get the link to Tumblr's authorization page for this application. /// </summary> /// <returns>The url with a valid request token, or a null string.</returns> public string AuthorizationLinkGet() { string ret = null; string response = oAuthWebRequest(Method.GET, REQUEST_TOKEN, String.Empty); if (response.Length > 0) { //response contains token and token secret. We only need the token. NameValueCollection qs = HttpUtility.ParseQueryString(response); if (qs["oauth_token"] != null) { ret = AUTHORIZE + "?oauth_token=" + qs["oauth_token"]; } } return ret; } /// <summary> /// Exchange the request token for an access token. /// </summary> /// <param name="authToken">The oauth_token is supplied by </param> public void AccessTokenGet(string authToken, string verifier) { this.Token = authToken; this.Verifier = verifier; string response = oAuthWebRequest(Method.GET, ACCESS_TOKEN, String.Empty); if (response.Length > 0) { //Store the Token and Token Secret NameValueCollection qs = HttpUtility.ParseQueryString(response); if (qs["oauth_token"] != null) { this.Token = qs["oauth_token"]; } if (qs["oauth_token_secret"] != null) { this.TokenSecret = qs["oauth_token_secret"]; } } } /// <summary> /// Exchange the username and password for an access token. /// </summary> /// <param name="username">Tumblr Username.</param> /// <param name="username">Tumblr Password.</param> public void xAuthAccessTokenGet(string username, string password) { this.xAuthUsername = username; this.xAuthPassword = password; string response = oAuthWebRequest(Method.GET, XAUTH_ACCESS_TOKEN, String.Empty); if (response.Length > 0) { //Store the Token and Token Secret NameValueCollection qs = HttpUtility.ParseQueryString(response); if (qs["oauth_token"] != null) { this.Token = qs["oauth_token"]; } if (qs["oauth_token_secret"] != null) { this.TokenSecret = qs["oauth_token_secret"]; } } } /// <summary> /// Submit a web request using oAuth. /// </summary> /// <param name="method">GET or POST</param> /// <param name="url">The full url, including the querystring.</param> /// <param name="postData">Data to post (querystring format)</param> /// <returns>The web server response.</returns> public string oAuthWebRequest(Method method, string url, string postData) { string outUrl = ""; string querystring = ""; string ret = ""; //Setup postData for signing. //Add the postData to the querystring. if (method == Method.POST) { if (postData.Length > 0) { //Decode the parameters and re-encode using the oAuth UrlEncode method. NameValueCollection qs = HttpUtility.ParseQueryString(postData); postData = ""; foreach (string key in qs.AllKeys) { if (postData.Length > 0) { postData += "&"; } qs[key] = HttpUtility.UrlDecode(qs[key]); qs[key] = this.UrlEncode(qs[key]); postData += key + "=" + qs[key]; } if (url.IndexOf("?") > 0) { url += "&"; } else { url += "?"; } url += postData; } } Uri uri = new Uri(url); string nonce = this.GenerateNonce(); string timeStamp = this.GenerateTimeStamp(); //Generate Signature string sig = this.GenerateSignature(uri, this.ConsumerKey, this.ConsumerSecret, this.Token, this.TokenSecret, this.Verifier, this.xAuthUsername, this.xAuthPassword, method.ToString(), timeStamp, nonce, out outUrl, out querystring); querystring += "&oauth_signature=" + HttpUtility.UrlEncode(sig); //Convert the querystring to postData if (method == Method.POST) { postData = querystring; querystring = ""; } if (querystring.Length > 0) { outUrl += "?"; } ret = WebRequest(method, outUrl + querystring, postData); return ret; } /// <summary> /// Web Request Wrapper /// </summary> /// <param name="method">Http Method</param> /// <param name="url">Full url to the web resource</param> /// <param name="postData">Data to post in querystring format</param> /// <returns>The web server response.</returns> public string WebRequest(Method method, string url, string postData) { HttpWebRequest webRequest = null; StreamWriter requestWriter = null; string responseData = ""; webRequest = System.Net.WebRequest.Create(url) as HttpWebRequest; webRequest.Method = method.ToString(); webRequest.ServicePoint.Expect100Continue = false; //webRequest.UserAgent = "Identify your application please."; //webRequest.Timeout = 20000; if (method == Method.POST) { webRequest.ContentType = "application/x-www-form-urlencoded"; //POST the data. requestWriter = new StreamWriter(webRequest.GetRequestStream()); try { requestWriter.Write(postData); } catch { throw; } finally { requestWriter.Close(); requestWriter = null; } } responseData = WebResponseGet(webRequest); webRequest = null; return responseData; } /// <summary> /// Process the web response. /// </summary> /// <param name="webRequest">The request object.</param> /// <returns>The response data.</returns> public string WebResponseGet(HttpWebRequest webRequest) { StreamReader responseReader = null; string responseData = ""; try { responseReader = new StreamReader(webRequest.GetResponse().GetResponseStream()); responseData = responseReader.ReadToEnd(); } catch { throw; } finally { webRequest.GetResponse().GetResponseStream().Close(); responseReader.Close(); responseReader = null; } return responseData; } } }