OAuth认证协议原理分析及同步消息到Twitter和Facebook使用方法

private void update_facebook(string user, string password, string message)
       {
          string service = "Facebook";
          this.BeginInvoke(new UpdateStatusDelegate(StateInfo), new object[] { "正在将消息发布到 " + service });
          CookieContainer cc = new CookieContainer();
          string lsd = "";
          Uri uri = new Uri("https://login.facebook.com/login.php?login_attempt=1");
          HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(uri);
          request.UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)";
          request.ContentType = "application/x-www-form-urlencoded";
          request.Method = "GET";
          request.CookieContainer = cc;
          if (!string.IsNullOrEmpty(proxyserver))
          {
              request.Proxy = new WebProxy(proxyserver);
              ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);
          }
          try
          {
              using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
              {
                  foreach (Cookie cookie in response.Cookies)
                  {
                      cc.Add(cookie);
                  }
                  Stream responseStream = response.GetResponseStream();
                  StreamReader reader = new StreamReader(responseStream, Encoding.GetEncoding("UTF-8"));
                  string result = reader.ReadToEnd();
                  Match re = Regex.Match(result, @"name=u0022lsdu0022svalue=u0022([^u0022]*)u0022()");
                 lsd = re.Groups[1].ToString();
              }
           }
          catch (Exception ex)
          {
              ErrorMessage("获取登录到 "+ service +" 必要参数时出现意外:
"+ex.Message);
              return;
          }
          StringBuilder postData = new StringBuilder();
          postData.Append("charset_test=%E2%82%AC%2C%C2%B4%2C%E2%82%AC%2C%C2%B4%2C%E6%B0%B4%2C%D0%94%2C%D0%84");
          postData.Append("&lsd=" + lsd + "&return_session=0&legacy_return=1&display=&session_key_only=0&trynum=1");
          postData.Append("&email=" + Utility.UrlEncode(user) + "&pass=" + Utility.UrlEncode(password) + "&persistent=1&login=%E7%99%BB%E5%BD%95");
          byte[] bs = Encoding.UTF8.GetBytes(postData.ToString());
          request = (HttpWebRequest)HttpWebRequest.Create(uri);
          request.UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)";
          request.ContentType = "application/x-www-form-urlencoded";
          request.Method = "POST";
          request.ContentLength = bs.Length;
          request.CookieContainer = cc;
          request.AllowAutoRedirect = true;
          if (!string.IsNullOrEmpty(proxyserver))
          {
              request.Proxy = new WebProxy(proxyserver);
          }
          try
          {
              using (Stream requestStream = request.GetRequestStream())
              {
                  requestStream.Write(bs, 0, bs.Length);
                  requestStream.Close();
              }
              using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
              {
                  foreach (Cookie cookie in response.Cookies)
                  {
                      cc.Add(cookie);
                  }
                  response.Close();
              }
          }
          catch (Exception ex)
          {
              ErrorMessage("登录到 " + service + " 时出现意外:
"+ex.Message);
              return;
          }
          uri = new Uri("http://www.facebook.com/home.php");
          request = (HttpWebRequest)HttpWebRequest.Create(uri);
          request.UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)";
          request.ContentType = "application/x-www-form-urlencoded";
          request.Method = "GET";
          request.CookieContainer = cc;
          if (!string.IsNullOrEmpty(proxyserver))
          {
              request.Proxy = new WebProxy(proxyserver);
          }
          string profile_id = "", composer_id = "", post_form_id = "", fb_dtsg = "";
          try
          {
              using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
              {
                  foreach (Cookie cookie in response.Cookies)
                  {
                      cc.Add(cookie);
                  }   
                  Stream responseStream = response.GetResponseStream();
                  StreamReader reader = new StreamReader(responseStream, Encoding.GetEncoding("UTF-8"));
                  string result = reader.ReadToEnd();
                  Match re = Regex.Match(result, @"name=u0022profile_idu0022svalue=u0022([^u0022]*)u0022()");
                  profile_id = re.Groups[1].ToString();
                  re = Regex.Match(result, @"name=u0022composer_idu0022svalue=u0022([^u0022]*)u0022()");
                  composer_id = re.Groups[1].ToString();
                  re = Regex.Match(result, @"name=u0022post_form_idu0022svalue=u0022([^u0022]*)u0022()");
                  post_form_id = re.Groups[1].ToString();
                  re = Regex.Match(result, @"name=u0022fb_dtsgu0022svalue=u0022([^u0022]*)u0022()");
                  fb_dtsg = re.Groups[1].ToString();
                  response.Close();
              }
          }
          catch (Exception ex)
          {
              ErrorMessage("重定向facebook页面并获取发布消息所需参数时出现意外:
"+ex.Message);
              return;
          }
          postData = new StringBuilder();
           postData.Append("action=HOME_UPDATE&home_tab_id=1&profile_id=" + profile_id);
          postData.Append("&status=" + Utility.UrlEncode(message) + "&target_id=0&app_id=");
           postData.Append("&privacy_data[value]=80&privacy_data[friends]=0&&&&&privacy_data[list_anon]=0&&privacy_data[list_x_anon]=0");
          postData.Append("&&composer_id=" + composer_id + "&hey_kid_im_a_composer=true&display_context=home");
          postData.Append("&post_form_id=" + post_form_id + "&fb_dtsg=" + fb_dtsg+"&lsd="+lsd);
          postData.Append("&_log_display_context=home&ajax_log=1&post_form_id_source=AsyncRequest");
          bs = Encoding.UTF8.GetBytes(postData.ToString());
          uri = new Uri("http://www.facebook.com/ajax/updatestatus.php?__a=1");
          request = (HttpWebRequest)HttpWebRequest.Create(uri);
          request.UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)";
          request.ContentType = "application/x-www-form-urlencoded";
           request.Method = "POST";
          request.CookieContainer = cc;
          request.ContentLength = bs.Length;
          if (!string.IsNullOrEmpty(proxyserver))
          {
              request.Proxy = new WebProxy(proxyserver);
          }
          try
          {
              using (Stream requestStream = request.GetRequestStream())
              {
                  requestStream.Write(bs, 0, bs.Length);
                  requestStream.Close();
              }
           }
          catch (Exception ex)
          {
              ErrorMessage("发布消息到 facebook 时出现意外:
"+ex.Message);
              return;
          }
      }