I am trying to setup Custom Attribute that handles That httponlyCookie exists or not

Microsoft.AspNetCore.Authorization is used to validate token while is there any attribute that checks httpOnlyCookie present in browser and is valid i.e like it also checks role based authentication.

I tried to create a custom attribute that handles the httponlycookie authentication while I don't want to use custom attributes if there is any built in attribute provided by ASP.NET Core.

Here's my code:

using Microsoft.AspNetCore.Mvc.Filters;
using Microsoft.AspNetCore.Mvc;
using Microsoft.IdentityModel.Tokens;
using System.IdentityModel.Tokens.Jwt;
using System.Text;
using System;

public class AuthorizeWithCookieAttribute : Attribute, IAuthorizationFilter
{
    public void OnAuthorization(AuthorizationFilterContext context)
    {
        var request = context.HttpContext.Request;

        // Check if the authToken cookie exists
        if (!request.Cookies.TryGetValue("authToken", out var token) || string.IsNullOrEmpty(token))
        {
            context.Result = new JsonResult(new { message = "Unauthorized: No auth token found in cookie." })
            { StatusCode = 401 };
            return;
        }

        Console.WriteLine("Token from cookie: " + token); // Debugging

        try
        {
            var tokenHandler = new JwtSecurityTokenHandler();
            var key = Encoding.UTF8.GetBytes("this is my secret key more then 128 bits");

            tokenHandler.ValidateToken(token, new TokenValidationParameters
            {
                ValidateIssuerSigningKey = true,
                IssuerSigningKey = new SymmetricSecurityKey(key),
                ValidateIssuer = false,
                ValidateAudience = false,
                ClockSkew = TimeSpan.Zero // Reduce token time discrepancy
            }, out _);

            Console.WriteLine("Token validation success!"); // Debugging
        }
        catch (Exception ex)
        {
            Console.WriteLine("Token validation failed: " + ex.Message); // Debugging
            context.Result = new JsonResult(new { message = "Unauthorized: Invalid token.", error = ex.Message })
            { StatusCode = 401 };
        }
    }
}

[HttpGet("GetFruits")]
[AuthorizeWithCookie]
public IActionResult GetFruits()
{ }

Now custom attribute AuthorizeWithCookie works

If you want to get the token from the cookie during the auth, I suggest you could consider using the JwtBearerEvents OnMessageReceived to set the token .

Then you could directly using the Authorize(Roles = "Admin")] to check the role.

More details, you could refer to below codes:

builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
    .AddJwtBearer(options =>
    {
        options.TokenValidationParameters = new TokenValidationParameters
        {
            ValidateIssuerSigningKey = true,
            IssuerSigningKey = new SymmetricSecurityKey(key),
            ValidateIssuer = false,
            ValidateAudience = false,
            ClockSkew = TimeSpan.Zero
        };

 
        options.Events = new JwtBearerEvents
        {
            OnMessageReceived = context =>
            {
                if (context.Request.Cookies.TryGetValue("authToken", out var token))
                {
                    context.Token = token;
                }
                return Task.CompletedTask;
            }
        };
    });