xCommons/Extensions/FilterExtensions.cs

using System.Linq;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc.Authorization;
using Microsoft.AspNetCore.Mvc.Filters;
using xCommons.Configurations;

namespace xCommons.Extensions {
    public static partial class FilterExtensions {
        public static XAppConfiguration GetXAppConfiguration (this ActionExecutingContext source) {
            //
            var services = source.HttpContext.RequestServices;
            return (XAppConfiguration) services.GetService (typeof (XAppConfiguration));
        }

        public static XAppConfiguration GetXAppConfiguration (this AuthorizationFilterContext source) {
            //
            var services = source.HttpContext.RequestServices;
            return (XAppConfiguration) services.GetService (typeof (XAppConfiguration));
        }

        public static bool IsAnonymousAllowed (this AuthorizationFilterContext source) {
            //
            var result = source.Filters
                .Any (f => f.GetType () == typeof (AllowAnonymousFilter)) ||
                source.ActionDescriptor.FilterDescriptors
                .Any (f => f.GetType () == typeof (AllowAnonymousFilter)) ||
                source.ActionDescriptor.EndpointMetadata
                .Any (f => f.GetType () == typeof (AllowAnonymousAttribute));

            //
            return result;
        }
    }
}