如何在 OWIN 中间件中捕获 SecurityTokenExpiredException？

Question

我有一个带有 OWIN 的 Web API，它使用 JwtBearerAuthenticationOptions (.Net Framework 4.5.2) 来验证身份验证令牌。

在跟随 Rui Figueiredo 的 this excellent article 以向 API 添加刷新令牌功能时，我似乎在 OWIN 中没有 JwtBearerEvents。例如。此代码适用于 ASP.NET 核心（在 ConfigureServices 中）：

services.AddAuthentication(x =>
{
    x.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
    x.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
})
.AddJwtBearer(x =>
{
    x.RequireHttpsMetadata = false;
    x.SaveToken = true;
    x.TokenValidationParameters = GetDefaultValidationParameters();
    x.Events = new JwtBearerEvents
    {
        OnAuthenticationFailed = context =>
        {
            if (context.Exception.GetType() == typeof(SecurityTokenExpiredException))
            {
                context.Response.Headers.Add("Token-Expired", "true");
            }
            return Task.CompletedTask;
        }
    };
});

我似乎无法掌握如何使用 OWIN 管道实现相同的目的。我试过的是在 ConfigureAuth:

中插入一个中间件

private static void ConfigureAuth(IAppBuilder pApp)
{
    pApp.Use(async (context, next) =>
    {
        try
        {
            await next.Invoke();
        }
        catch (SecurityTokenExpiredException)
        {
            context.Response.Headers.Add("Token - Expired", new[] { "true" });
            throw;
        }
    });
    var issuer = "issuer";
    var audience = "all";
    var key = Encoding.ASCII.GetBytes("MySecretKey");
    pApp.UseJwtBearerAuthentication(
        new JwtBearerAuthenticationOptions
        {
            AuthenticationMode = Microsoft.Owin.Security.AuthenticationMode.Active,
            AllowedAudiences = new[] { audience },
            IssuerSecurityKeyProviders = new IIssuerSecurityKeyProvider[]
            {
                new SymmetricKeyIssuerSecurityKeyProvider(issuer, key)
            },
            TokenValidationParameters = tokenValidationParameters,
            TokenHandler = new CustomJWTTokenHandler()
        });
}

但无济于事。在这种情况下，401 状态没有 Token-Expired header。

有人对如何在 Katana 中正确执行此操作有任何指示吗？

Answer 1

解决了。在的带领下，我向我的基本控制器添加了一个自定义授权属性，即：

public class CustomAuthorization : AuthorizeAttribute
{
    protected override void HandleUnauthorizedRequest(HttpActionContext actionContext)
    {
        base.HandleUnauthorizedRequest(actionContext);
        var ctx = actionContext;
        var token = ctx.Request.Headers.Authorization.Parameter;
        var handler = new CustomJWTTokenHandler();
        if (ctx.Response.StatusCode == HttpStatusCode.Unauthorized && handler.TokenHasExpired(token))
        {
            ctx.Response.Headers.Add("Token-Expired", "true");
        }
    }
}

并在我的 CustomJWTTokenHandler class 中实施过期检查，如下所示：

public bool TokenHasExpired(string tokenString)
{
    var token = ReadToken(tokenString);
    var hasExpired = token.ValidTo < DateTime.UtcNow;
    return hasExpired;
}

HTH

如何在 OWIN 中间件中捕获 SecurityTokenExpiredException？

How to capture a SecurityTokenExpiredException in OWIN middleware?

.net

c#

.net-framework-version

owin

refresh-token