julian
42 lines
2.1 KiB
C#
42 lines
2.1 KiB
C#
using System.Security.Claims;
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using adas_core.Domain.Enums;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.AspNetCore.Mvc.Filters;
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namespace adas_core.Authentication.Attributes;
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/// <summary>
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/// Specifies an authorization filter attribute that restricts access to decorated methods based on a required role of type <see cref="PermissionEnum.RolesType"/>.
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/// Inherits from <see cref="Attribute"/> and implements <see cref="IAuthorizationFilter"/> to participate in the authorization pipeline.
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/// </summary>
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/// <remarks>
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/// Constrained by <see cref="System.AttributeUsageAttribute"/> to <see cref="AttributeTargets.Method"/>, the attribute is configured at construction with the required <paramref name="type"/>.
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/// </remarks>
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/// <!-- aidoc:v1 sig=b5093e9 -->
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[AttributeUsage(AttributeTargets.Method)]
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public class AuthorizeRolesAttribute(PermissionEnum.RolesType type) : Attribute, IAuthorizationFilter
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{
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/// <summary>
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/// Performs authorization by ensuring the current user is authenticated and has a role matching the required permission type.
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/// Responds with an unauthorized result when no user is authenticated, bypasses role checking for the AuthSome permission type,
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/// and otherwise responds with a forbid result when no user role starts with the permission type value.
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/// </summary>
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/// <param name="context">The authorization filter context providing access to the HTTP context and where the authorization result is assigned.</param>
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public void OnAuthorization(AuthorizationFilterContext context)
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{
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var user = context.HttpContext.User;
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if (user.Identity?.IsAuthenticated != true)
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{
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context.Result = new UnauthorizedResult();
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return;
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}
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var roles = user.Claims.Where(c => c.Type == ClaimTypes.Role);
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if (type == PermissionEnum.RolesType.AuthSome) return;
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var hasRequiredRole = roles.Any(r => r.Value.StartsWith(type.ToString()));
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if (!hasRequiredRole) context.Result = new ForbidResult();
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}
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} |