.net - 默认情况下如何拒绝对 Web API 项目的授权

Question

除非明确允许授权，否则是否可以拒绝对项目中每个 ASP.NET Web API Controller 的授权(甚至对于经过身份验证的用户)？

我正在寻找类似的东西:

WebApiConfig

config.Filters.Add(new DenyAuthorizationAttribute());   // ??

ExampleController.cs

public class ExampleController : ApiController
{
    [Authorize(Roles = "Admins")]
    public string GetHello_OnlyAdmins()
    {
        // only admins can call this
    }

    [AllowAnonymous]
    public void PostSomething_Everybody()
    {
        // ...
    }

    public void DeleteSomething_NoOne()        
    {
        // nobody can call this - we want to force the programmer to be specific about authorized roles
    }

}

Answer 1

我通过向 HttpConfiguration.Filters 添加自定义“默认拒绝”授权过滤器解决了这个问题。 :

public class DefaultDenyAuthorizationFilter : AuthorizeAttribute
{
    public override void OnAuthorization(HttpActionContext actionContext)
    {
        if ( null == actionContext )
            throw new ArgumentNullException("actionContext");

        if ( actionContext.ActionDescriptor.GetCustomAttributes<AllowAnonymousAttribute>().Any() ||
             actionContext.ActionDescriptor.GetCustomAttributes<AuthorizeAttribute>().Any() ||
             actionContext.ControllerContext.ControllerDescriptor.GetCustomAttributes<AllowAnonymousAttribute>().Any() ||
             actionContext.ControllerContext.ControllerDescriptor.GetCustomAttributes<AuthorizeAttribute>().Any() )
            return;

        base.HandleUnauthorizedRequest(actionContext);
    }
}