IdentityServer4 -在执行混合MVC快速启动之后使用刷新令牌

Question

我遵循了文档页面中的Quickstart，并使用IdentityServer进行身份验证，使用IdentityServer对三个服务(IdentityServer、一个Api服务、一个ASPNET应用程序)进行了工作配置。

一切都很完美(登录、登录、授权等)直到1小时后access_token到期。此时，MVC应用程序开始(正确地)从API服务接收401 (因为令牌过期)。此时，我知道我应该使用refresh_token来获得一个新的access_token。

我正在寻找一种自动刷新access_token的机制，并无意中发现了这个机制：https://github.com/mderriey/TokenRenewal/blob/master/src/MvcClient/Startup.cs (来自这个答案)。我试着使用它，但它没有工作( TokenEndpointResponse是空的，即使身份验证是成功的)。

我理解如何使用refresh_token来获得新的access_token，但是在获得它之后，我将如何将它插入cookie中，以便将来的请求能够访问新的令牌？

Answer 1

McvHybrid示例有一个很好的示例，可以将新的access_token和refresh_token返回到主体中。下面是带有代码的github文件的链接，它位于RenewTokens()中，如下所示。

    public async Task<IActionResult> RenewTokens()
    {
        var disco = await DiscoveryClient.GetAsync(Constants.Authority);
        if (disco.IsError) throw new Exception(disco.Error);

        var tokenClient = new TokenClient(disco.TokenEndpoint, "mvc.hybrid", "secret");
        var rt = await     HttpContext.Authentication.GetTokenAsync("refresh_token");
        var tokenResult = await tokenClient.RequestRefreshTokenAsync(rt);

        if (!tokenResult.IsError)
        {
            var old_id_token = await HttpContext.Authentication.GetTokenAsync("id_token");
            var new_access_token = tokenResult.AccessToken;
            var new_refresh_token = tokenResult.RefreshToken;

            var tokens = new List<AuthenticationToken>();
            tokens.Add(new AuthenticationToken { Name = OpenIdConnectParameterNames.IdToken, Value = old_id_token });
            tokens.Add(new AuthenticationToken { Name = OpenIdConnectParameterNames.AccessToken, Value = new_access_token });
            tokens.Add(new AuthenticationToken { Name = OpenIdConnectParameterNames.RefreshToken, Value = new_refresh_token });

            var expiresAt = DateTime.UtcNow + TimeSpan.FromSeconds(tokenResult.ExpiresIn);
            tokens.Add(new AuthenticationToken { Name = "expires_at", Value = expiresAt.ToString("o", CultureInfo.InvariantCulture) });

            var info = await HttpContext.Authentication.GetAuthenticateInfoAsync("Cookies");
            info.Properties.StoreTokens(tokens);
            await HttpContext.Authentication.SignInAsync("Cookies", info.Principal, info.Properties);

            return Redirect("~/Home/Secure");
        }

        ViewData["Error"] = tokenResult.Error;
        return View("Error");
    }

Answer 2

作为MVC客户端RenewTokens方法的一种选择，我做了一个筛选器，在令牌到期大约10分钟或更短的时间内自动完成任务。

public class TokenFilterAttribute : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        var expat = filterContext.HttpContext.Authentication.GetTokenAsync("expires_at").Result;

        var dataExp = DateTime.Parse(expat, null, DateTimeStyles.RoundtripKind);

        if ((dataExp - DateTime.Now).TotalMinutes < 10)
        {
            var disco = DiscoveryClient.GetAsync("http://localhost:5000/").Result;
            if (disco.IsError) throw new Exception(disco.Error);

            var tokenClient = new TokenClient(disco.TokenEndpoint, "clientId",
                "clientSecret");

            var rt = filterContext.HttpContext.Authentication.GetTokenAsync("refresh_token").Result;
            var tokenResult = tokenClient.RequestRefreshTokenAsync(rt).Result;

            if (!tokenResult.IsError)
            {
                var oldIdToken = filterContext.HttpContext.Authentication.GetTokenAsync("id_token").Result;
                var newAccessToken = tokenResult.AccessToken;
                var newRefreshToken = tokenResult.RefreshToken;

                var tokens = new List<AuthenticationToken>
                {
                    new AuthenticationToken {Name = OpenIdConnectParameterNames.IdToken, Value = oldIdToken},
                    new AuthenticationToken
                    {
                        Name = OpenIdConnectParameterNames.AccessToken,
                        Value = newAccessToken
                    },
                    new AuthenticationToken
                    {
                        Name = OpenIdConnectParameterNames.RefreshToken,
                        Value = newRefreshToken
                    }
                };

                var expiresAt = DateTime.Now + TimeSpan.FromSeconds(tokenResult.ExpiresIn);
                tokens.Add(new AuthenticationToken
                {
                    Name = "expires_at",
                    Value = expiresAt.ToString("o", CultureInfo.InvariantCulture)
                });

                var info = filterContext.HttpContext.Authentication.GetAuthenticateInfoAsync("Cookies").Result;
                info.Properties.StoreTokens(tokens);
                filterContext.HttpContext.Authentication.SignInAsync("Cookies", info.Principal, info.Properties);
            }
        }
    }
}

用法：

[Authorize]
[TokenFilter]
public class HomeController : Controller
{}

Answer 3

首先，确保使用IdentityModel库(nuget )。第二，由于8月2.0已经发布，因此存在一些严重的变化，拉法解决方案中使用的HttpContext.Authentication现在已经过时。以下是重新启动并作为过滤器运行所应做的更改

var expat = filterContext.HttpContext.Authentication.GetTokenAsync("expires_at").Result;

应成为：

var expat = filterContext.HttpContext.GetTokenAsync("expires_at").Result;

var rt = filterContext.HttpContext.Authentication.GetTokenAsync("refresh_token").Result;

应成为：

var rt = filterContext.HttpContext.GetTokenAsync("refresh_token").Result;

var oldIdToken = filterContext.HttpContext.Authentication.GetTokenAsync("id_token").Result;

应该变成

var oldIdToken = filterContext.HttpContext.GetTokenAsync("id_token").Result;

var info = filterContext.HttpContext.Authentication.GetAuthenticateInfoAsync("Cookies").Result;

应该变成

var info = filterContext.HttpContext.AuthenticateAsync("Cookies").Result;

filterContext.HttpContext.Authentication.SignInAsync("Cookies", info.Principal, info.Properties);

应该变成

filterContext.HttpContext.SignInAsync("Cookies", info.Principal, info.Properties);

这是一个完整的代码：

public class TokenFilterAttribute : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        var expat = filterContext.HttpContext.GetTokenAsync("expires_at").Result;

        var dataExp = DateTime.Parse(expat, null, DateTimeStyles.RoundtripKind);

        if ((dataExp - DateTime.Now).TotalMinutes < 10)
        {
            var disco = DiscoveryClient.GetAsync("http://localhost:5000/").Result;
            if (disco.IsError) throw new Exception(disco.Error);

            var tokenClient = new TokenClient(disco.TokenEndpoint, "clientId",
            "clientSecret");

            var rt = filterContext.HttpContext.GetTokenAsync("refresh_token").Result;
            var tokenResult = tokenClient.RequestRefreshTokenAsync(rt).Result;

            if (!tokenResult.IsError)
            {
                var oldIdToken = filterContext.HttpContext.GetTokenAsync("id_token").Result;
                var newAccessToken = tokenResult.AccessToken;
                var newRefreshToken = tokenResult.RefreshToken;

                var tokens = new List<AuthenticationToken>
                {
                    new AuthenticationToken {Name = OpenIdConnectParameterNames.IdToken, Value = oldIdToken},
                    new AuthenticationToken
                    {
                        Name = OpenIdConnectParameterNames.AccessToken,
                        Value = newAccessToken
                    },
                    new AuthenticationToken
                    { 
                        Name = OpenIdConnectParameterNames.RefreshToken,
                        Value = newRefreshToken
                    }
                };

                var expiresAt = DateTime.Now + TimeSpan.FromSeconds(tokenResult.ExpiresIn);
                tokens.Add(new AuthenticationToken
                {
                    Name = "expires_at",
                    Value = expiresAt.ToString("o", CultureInfo.InvariantCulture)
                });

                var info = filterContext.HttpContext.AuthenticateAsync("Cookies").Result;
                info.Properties.StoreTokens(tokens);  
                filterContext.HttpContext.SignInAsync("Cookies", info.Principal, info.Properties);
            }
        }
    }
}

美国а通用和拉斐尔展示的一样。