Detaillierte Erläuterung von Beispielen für die Implementierung der autorisierten OAuth2.0-Anmeldung durch ASP.NET für QQ, WeChat und Sina Weibo

In diesem Artikel werden hauptsächlich Beispiele für die autorisierte OAuth2.0-Anmeldung für QQ, WeChat und Sina Weibo vorgestellt. Zur Rückgabe entsprechender Daten werden hauptsächlich GET- und POST-Remoteschnittstellen verwendet.

Ob Tencent oder Sina, wenn man sich deren APIs ansieht, verfügt PHP über eine vollständige Schnittstelle, aber die Unterstützung für C# scheint nicht so vollständig zu sein, und Tencent hat sie nicht Alle, und Sina stellt einen Drittanbieter bereit. NND kann später nicht aktualisiert werden. Die Verwendung einer Drittanbieterbibliothek erfordert häufig nur eine Klassenbibliothek, und verschiedene Konfigurationen müssen entsprechend ihrer Vereinbarung geschrieben werden Ich schreibe es einfach selbst. Nachdem ich die Schnittstelle gelesen hatte, dachte ich zunächst, dass es schwierig sei, aber nachdem ich mir mehrere Quellcodes angesehen hatte, stellte ich fest, dass es nichts weiter als eine GET- oder POST-Anfrage ist Hier sind ohne weiteres nur ein paar Codes als Referenz. . .

Das Merkmal meiner Schreibmethode ist, dass sie nach der Instanziierung des Objekts Login() aufruft, um zur Anmeldeseite zu springen, von der aus geschrieben werden kann Sitzung oder unabhängig. Rufen Sie das access_token oder die eindeutige Kennung des Benutzers in der Funktion ab (z. B. GetOpenID()), um den nächsten Schritt zu erleichtern. Bei der sogenannten Bindung wird die eindeutige Kennung des Benutzers herausgenommen, in die Datenbank eingefügt und an das Konto gebunden.

1. Ist die Basisklasse aller OAuth-Klassen, legen Sie einige Methoden fest, die öffentlich sein müssen

public abstract class BaseOAuth
{
  public HttpRequest Request = HttpContext.Current.Request;
  public HttpResponse Response = HttpContext.Current.Response;
  public HttpSessionState Session = HttpContext.Current.Session;
  public abstract void Login();
  public abstract string Callback();
  #region 内部使用函数
  /// <summary>
  /// 生成唯一随机串防CSRF攻击
  /// </summary>
  /// <returns></returns>
  protected string GetStateCode()
  {
    Random rand = new Random();
    string data = DateTime.Now.ToString("yyyyMMddHHmmssffff") + rand.Next(1, 0xf423f).ToString();

    MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();

    byte[] md5byte = md5.ComputeHash(UTF8Encoding.Default.GetBytes(data));

    return BitConverter.ToString(md5byte).Replace("-", "");

  }

  /// <summary>
  /// GET请求
  /// </summary>
  /// <param name="url"></param>
  /// <returns></returns>
  protected string GetRequest(string url)
  {
    HttpWebRequest httpWebRequest = System.Net.WebRequest.Create(url) as HttpWebRequest;
    httpWebRequest.Method = "GET";
    httpWebRequest.ServicePoint.Expect100Continue = false;

    StreamReader responseReader = null;
    string responseData;
    try
    {
      responseReader = new StreamReader(httpWebRequest.GetResponse().GetResponseStream());
      responseData = responseReader.ReadToEnd();
    }
    finally
    {
      httpWebRequest.GetResponse().GetResponseStream().Close();
      responseReader.Close();
    }

    return responseData;
  }

  /// <summary>
  /// POST请求
  /// </summary>
  /// <param name="url"></param>
  /// <param name="postData"></param>
  /// <returns></returns>
  protected string PostRequest(string url, string postData)
  {
    HttpWebRequest httpWebRequest = System.Net.WebRequest.Create(url) as HttpWebRequest;
    httpWebRequest.Method = "POST";
    httpWebRequest.ServicePoint.Expect100Continue = false;
    httpWebRequest.ContentType = "application/x-www-form-urlencoded";

    //写入POST参数
    StreamWriter requestWriter = new StreamWriter(httpWebRequest.GetRequestStream());
    try
    {
      requestWriter.Write(postData);
    }
    finally
    {
      requestWriter.Close();
    }

    //读取请求后的结果
    StreamReader responseReader = null;
    string responseData;
    try
    {
      responseReader = new StreamReader(httpWebRequest.GetResponse().GetResponseStream());
      responseData = responseReader.ReadToEnd();
    }
    finally
    {
      httpWebRequest.GetResponse().GetResponseStream().Close();
      responseReader.Close();
    }

    return responseData;
  }

  /// <summary>
  /// 解析JSON
  /// </summary>
  /// <param name="strJson"></param>
  /// <returns></returns>
  protected NameValueCollection ParseJson(string strJson)
  {
    NameValueCollection mc = new NameValueCollection();
    Regex regex = new Regex(@"(\s*\""?([^""]*)\""?\s*\:\s*\""?([^""]*)\""?\,?)");
    strJson = strJson.Trim();
    if (strJson.StartsWith("{"))
    {
      strJson = strJson.Substring(1, strJson.Length - 2);
    }

    foreach (Match m in regex.Matches(strJson))
    {
      mc.Add(m.Groups[2].Value, m.Groups[3].Value);
    }
    return mc;
  }

  /// <summary>
  /// 解析URL
  /// </summary>
  /// <param name="strParams"></param>
  /// <returns></returns>
  protected NameValueCollection ParseUrlParameters(string strParams)
  {
    NameValueCollection nc = new NameValueCollection();
    foreach (string p in strParams.Split(&#39;&&#39;))
    {
      string[] ps = p.Split(&#39;=&#39;);
      nc.Add(ps[0], ps[1]);
    }
    return nc;
  }

  #endregion

}

2 🎜>

public class QQOAuth : BaseOAuth
{
  public string AppId = ConfigurationManager.AppSettings["OAuth_QQ_AppId"];
  public string AppKey = ConfigurationManager.AppSettings["OAuth_QQ_AppKey"];
  public string RedirectUrl = ConfigurationManager.AppSettings["OAuth_QQ_RedirectUrl"];

  public const string GET_AUTH_CODE_URL = "https://graph.qq.com/oauth2.0/authorize";
  public const string GET_ACCESS_TOKEN_URL = "https://graph.qq.com/oauth2.0/token";
  public const string GET_OPENID_URL = "https://graph.qq.com/oauth2.0/me";

  /// <summary>
  /// QQ登录，跳转到登录页面
  /// </summary>
  public override void Login()
  {
    //-------生成唯一随机串防CSRF攻击
    string state = GetStateCode();
    Session["QC_State"] = state; //state 放入Session

    string parms = "?response_type=code&"
      + "client_id=" + AppId + "&redirect_uri=" + Uri.EscapeDataString(RedirectUrl) + "&state=" + state;

    string url = GET_AUTH_CODE_URL + parms;
    Response.Redirect(url); //跳转到登录页面
  }

  /// <summary>
  /// QQ回调函数
  /// </summary>
  /// <param name="code"></param>
  /// <param name="state"></param>
  /// <returns></returns>
  public override string Callback()
  {
    string code = Request.QueryString["code"];
    string state = Request.QueryString["state"];

    //--------验证state防止CSRF攻击
    if (state != (string)Session["QC_State"])
    {
      ShowError("30001");
    }

    string parms = "?grant_type=authorization_code&"
      + "client_id=" + AppId + "&redirect_uri=" + Uri.EscapeDataString(RedirectUrl)
      + "&client_secret=" + AppKey + "&code=" + code;

    string url = GET_ACCESS_TOKEN_URL + parms;
    string str = GetRequest(url);

    if (str.IndexOf("callback") != -1)
    {
      int lpos = str.IndexOf("(");
      int rpos = str.IndexOf(")");
      str = str.Substring(lpos + 1, rpos - lpos - 1);
      NameValueCollection msg = ParseJson(str);
      if (!string.IsNullOrEmpty(msg["error"]))
      {
        ShowError(msg["error"], msg["error_description"]);
      }

    }

    NameValueCollection token = ParseUrlParameters(str);
    Session["QC_AccessToken"] = token["access_token"]; //access_token 放入Session
    return token["access_token"];
  }


  /// <summary>
  /// 使用Access Token来获取用户的OpenID
  /// </summary>
  /// <param name="accessToken"></param>
  /// <returns></returns>
  public string GetOpenID()
  {
    string parms = "?access_token=" + Session["QC_AccessToken"];

    string url = GET_OPENID_URL + parms;
    string str = GetRequest(url);

    if (str.IndexOf("callback") != -1)
    {
      int lpos = str.IndexOf("(");
      int rpos = str.IndexOf(")");
      str = str.Substring(lpos + 1, rpos - lpos - 1);
    }

    NameValueCollection user = ParseJson(str);

    if (!string.IsNullOrEmpty(user["error"]))
    {
      ShowError(user["error"], user["error_description"]);
    }

    Session["QC_OpenId"] = user["openid"]; //openid 放入Session
    return user["openid"];
  }

  /// <summary>
  /// 显示错误信息
  /// </summary>
  /// <param name="code">错误编号</param>
  /// <param name="description">错误描述</param>
  private void ShowError(string code, string description = null)
  {
    if (description == null)
    {
      switch (code)
      {
        case "20001":
          description = "<h2>配置文件损坏或无法读取，请检查web.config</h2>";
          break;
        case "30001":
          description = "<h2>The state does not match. You may be a victim of CSRF.</h2>";
          break;
        case "50001":
          description = "<h2>可能是服务器无法请求https协议</h2>可能未开启curl支持,请尝试开启curl支持，重启web服务器，如果问题仍未解决，请联系我们";
          break;
        default:
          description = "<h2>系统未知错误，请联系我们</h2>";
          break;
      }
      Response.Write(description);
      Response.End();
    }
    else
    {
      Response.Write("<h3>error:<h3>" + code + "<h3>msg:<h3>" + description);
      Response.End();
    }
  }

}

3. Sina Weibos OAuth-Klasse

public class SinaOAuth : BaseOAuth
{
  public string AppKey = ConfigurationManager.AppSettings["OAuth_Sina_AppKey"];
  public string AppSecret = ConfigurationManager.AppSettings["OAuth_Sina_AppSecret"];
  public string RedirectUrl = ConfigurationManager.AppSettings["OAuth_Sina_RedirectUrl"];

  public const string GET_AUTH_CODE_URL = "https://api.weibo.com/oauth2/authorize";
  public const string GET_ACCESS_TOKEN_URL = "https://api.weibo.com/oauth2/access_token";
  public const string GET_UID_URL = "https://api.weibo.com/2/account/get_uid.json";

  /// <summary>
  /// 新浪微博登录，跳转到登录页面
  /// </summary>
  public override void Login()
  {
    //-------生成唯一随机串防CSRF攻击
    string state = GetStateCode();
    Session["Sina_State"] = state; //state 放入Session

    string parms = "?client_id=" + AppKey + "&redirect_uri=" + Uri.EscapeDataString(RedirectUrl)
      + "&state=" + state;

    string url = GET_AUTH_CODE_URL + parms;
    Response.Redirect(url); //跳转到登录页面
  }

  /// <summary>
  /// 新浪微博回调函数
  /// </summary>
  /// <returns></returns>
  public override string Callback()
  {
    string code = Request.QueryString["code"];
    string state = Request.QueryString["state"];

    //--------验证state防止CSRF攻击
    if (state != (string)Session["Sina_State"])
    {
      ShowError("The state does not match. You may be a victim of CSRF.");
    }

    string parms = "client_id=" + AppKey + "&client_secret=" + AppSecret
      + "&grant_type=authorization_code&code=" + code + "&redirect_uri=" + Uri.EscapeDataString(RedirectUrl);

    string str = PostRequest(GET_ACCESS_TOKEN_URL, parms);

    NameValueCollection user = ParseJson(str);

    Session["Sina_AccessToken"] = user["access_token"]; //access_token 放入Session
    Session["Sina_UId"] = user["uid"]; //uid 放入Session
    return user["access_token"];
  }


  /// <summary>
  /// 显示错误信息
  /// </summary>
  /// <param name="description">错误描述</param>
  private void ShowError(string description = null)
  {
    Response.Write("<h2>" + description + "</h2>");
    Response.End();
  }
}

4. WeChats OAuth-Klasse

public class WeixinOAuth : BaseOAuth
{
  public string AppId = ConfigurationManager.AppSettings["OAuth_Weixin_AppId"];
  public string AppSecret = ConfigurationManager.AppSettings["OAuth_Weixin_AppSecret"];
  public string RedirectUrl = ConfigurationManager.AppSettings["OAuth_Weixin_RedirectUrl"];

  public const string GET_AUTH_CODE_URL = "https://open.weixin.qq.com/connect/qrconnect";
  public const string GET_ACCESS_TOKEN_URL = "https://api.weixin.qq.com/sns/oauth2/access_token";
  public const string GET_USERINFO_URL = "https://api.weixin.qq.com/sns/userinfo";

  /// <summary>
  /// 微信登录，跳转到登录页面
  /// </summary>
  public override void Login()
  {
    //-------生成唯一随机串防CSRF攻击
    string state = GetStateCode();
    Session["Weixin_State"] = state; //state 放入Session

    string parms = "?appid=" + AppId
      + "&redirect_uri=" + Uri.EscapeDataString(RedirectUrl) + "&response_type=code&scope=snsapi_login"
      + "&state=" + state + "#wechat_redirect";

    string url = GET_AUTH_CODE_URL + parms;
    Response.Redirect(url); //跳转到登录页面
  }

  /// <summary>
  /// 微信回调函数
  /// </summary>
  /// <param name="code"></param>
  /// <param name="state"></param>
  /// <returns></returns>
  public override string Callback()
  {
    string code = Request.QueryString["code"];
    string state = Request.QueryString["state"];

    //--------验证state防止CSRF攻击
    if (state != (string)Session["Weixin_State"])
    {
      ShowError("30001");
    }

    string parms = "?appid=" + AppId + "&secret=" + AppSecret
      + "&code=" + code + "&grant_type=authorization_code";

    string url = GET_ACCESS_TOKEN_URL + parms;
    string str = GetRequest(url);


    NameValueCollection msg = ParseJson(str);
    if (!string.IsNullOrEmpty(msg["errcode"]))
    {
      ShowError(msg["errcode"], msg["errmsg"]);
    }

    Session["Weixin_AccessToken"] = msg["access_token"]; //access_token 放入Session
    Session["Weixin_OpenId"] = msg["openid"]; //access_token 放入Session
    return msg["access_token"];
  }


  /// <summary>
  /// 显示错误信息
  /// </summary>
  /// <param name="code">错误编号</param>
  /// <param name="description">错误描述</param>
  private void ShowError(string code, string description = null)
  {
    if (description == null)
    {
      switch (code)
      {
        case "20001":
          description = "<h2>配置文件损坏或无法读取，请检查web.config</h2>";
          break;
        case "30001":
          description = "<h2>The state does not match. You may be a victim of CSRF.</h2>";
          break;
        case "50001":
          description = "<h2>接口未授权</h2>";
          break;
        default:
          description = "<h2>系统未知错误，请联系我们</h2>";
          break;
      }
      Response.Write(description);
      Response.End();
    }
    else
    {
      Response.Write("<h3>error:<h3>" + code + "<h3>msg:<h3>" + description);
      Response.End();
    }
  }

}

5.web.config-Konfigurationsinformationen

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