如何在不创建新的刷新令牌的情况下使用刷新令牌更新 Owin 访问令牌？

Question

我已经设法获得了一个简单的示例代码，它可以创建一个不记名令牌，还可以通过阅读 stackoverflow 上的其他论坛来通过刷新令牌请求新的令牌。

启动类是这样的

public class Startup
{
    public static void Configuration(IAppBuilder app)
    {
        app.UseOAuthBearerAuthentication(
                      new OAuthBearerAuthenticationOptions());

        app.UseOAuthAuthorizationServer(
                      new OAuthAuthorizationServerOptions
                      {
                          TokenEndpointPath = new PathString("/Token"),
                          Provider = new OAuthAuthorizationServerProvider()
                          {
                              OnValidateClientAuthentication = async c =>
                              {
                                  c.Validated();
                              },
                              OnGrantResourceOwnerCredentials = async c =>
                              {
                                  if (c.UserName == "alice" && c.Password == "supersecret")
                                  {
                                      Claim claim1 = new Claim(ClaimTypes.Name, c.UserName);
                                      Claim[] claims = new Claim[] { claim1 };
                                      ClaimsIdentity claimsIdentity =
                                          new ClaimsIdentity(
                                             claims, OAuthDefaults.AuthenticationType);
                                      c.Validated(claimsIdentity);
                                  }
                              }
                          },
                          AccessTokenExpireTimeSpan = TimeSpan.FromSeconds(40),
                          AllowInsecureHttp = true,
                          RefreshTokenProvider = new ApplicationRefreshTokenProvider()
                      });
    }
}

我还有一个刷新令牌的类，如下所示：

public class ApplicationRefreshTokenProvider : AuthenticationTokenProvider
{
    public override void Create(AuthenticationTokenCreateContext context)
    {
        // Expiration time in seconds
        int expire = 2 * 60;
        context.Ticket.Properties.ExpiresUtc = new DateTimeOffset(DateTime.Now.AddSeconds(expire));
        context.SetToken(context.SerializeTicket());
    }

    public override void Receive(AuthenticationTokenReceiveContext context)
    {
        context.DeserializeTicket(context.Token);
    }
}

我的理解是通过提供一个刷新令牌，你应该得到一个新的访问令牌。然而，这段代码中发生的事情是，当我提供 refresh token 时，也会创建并返回一个新的 refresh token。我希望它在第一次提供用户名/密码时同时创建 access 和 refresh token，但创建新的 refresh tokens 每次使用 刷新令牌 请求新的访问令牌？

例如，如果我给定我的代码，访问令牌有 20 分钟的时间跨度，刷新令牌有两周的时间，新的 访问令牌 可以每 20 分钟创建一次，这很好，但是新的 刷新令牌 也将每 20 分钟创建一次，但持续两周。然后会创建很多刷新令牌，但不会使用。

问题：

我几个小时前才开始阅读/了解这个，所以我很不确定，但这是正确的行为还是我应该以某种方式更改我的代码以仅创建和返回一个新的 访问令牌 当一个 refresh token 被提供并且不创建和返回一个新的 refresh token 时？非常感谢任何帮助或输入，谢谢！

Answer 1

由于没有人回答，我将提供我所做的以及正在做我正在寻找的东西。因此，我现在要接受这个答案。

public class Startup
{
public static void Configuration(IAppBuilder app)
{
    app.UseOAuthBearerAuthentication(
                  new OAuthBearerAuthenticationOptions());

    app.UseOAuthAuthorizationServer(
                  new OAuthAuthorizationServerOptions
                  {
                      TokenEndpointPath = new PathString("/Token"),
                      Provider = new OAuthAuthorizationServerProvider()
                      {
                          OnValidateClientAuthentication = async c =>
                          {
                              c.Validated();
                          },
                          OnGrantResourceOwnerCredentials = async c =>
                          {
                           //Add a string with the current date
                            string dateNow = DateTime.UtcNow.ToString();

                              if (c.UserName == "alice" && c.Password == "supersecret")
                              {
                                  Claim claim1 = new Claim(ClaimTypes.Name, c.UserName);
                                  Claim[] claims = new Claim[] { claim1 };
                                  ClaimsIdentity claimsIdentity =
                                      new ClaimsIdentity(
                                         claims, OAuthDefaults.AuthenticationType);

                                  //Add a claim with the creationdate of the token
                                  claimsIdentity.AddClaim(new Claim("creationDate", dateNow));

                                  c.Validated(claimsIdentity);
                              }
                          }
                      },
                      AccessTokenExpireTimeSpan = TimeSpan.FromSeconds(40),
                      AllowInsecureHttp = true,
                      RefreshTokenProvider = new ApplicationRefreshTokenProvider()
                  });
}
}

在 ApplicationRefreshTokenProvider 中我做了这些更改

public class ApplicationRefreshTokenProvider : AuthenticationTokenProvider
{
    public override void Create(AuthenticationTokenCreateContext context)
    {
    //Get the claim which holds creation date
     DateTime creationDate = Convert.ToDateTime(clientid.Claims.Where(c => c.Type == "creationDate").Single().Value);
     //Create a variable holding current time minus 30 seconds(This is how long time you can create new refresh tokens by providing your original refresh token)
     DateTime now = DateTime.UtcNow.AddSeconds(-30);


    //If the time has passed more than 30 seconds from the time you got your original access and refresh token by providing credentials
    //you may not create and return new refresh tokens(Obviously the 30  seconds could be changed to something less or more aswell)
    if(now < ceationDate)
    {
    // Expiration time in seconds
    int expire = 2 * 60;
    context.Ticket.Properties.ExpiresUtc = new DateTimeOffset(DateTime.Now.AddSeconds(expire));
    context.SetToken(context.SerializeTicket());
    }
}

    public override void Receive(AuthenticationTokenReceiveContext context)
    {
    context.DeserializeTicket(context.Token);
    }
}