针对不同角色的不同 API 功能

Question

我有带有 asp.net core 2.1 的 API。基于声明的身份验证。是否可以将这两个api函数合二为一？

[Authorize(Roles = "Admin")]
[HttpPost("delete")]
public IActionResult Delete([FromBody]Item item)
{
    _itemService.Delete(item.Id);
    return Ok();
}

[Authorize]
[HttpPost("delete")]
public IActionResult Delete([FromBody]Item item)
{
    var id = int.Parse(User.FindFirst(ClaimTypes.NameIdentifier).Value);
    if (_itemService.IsAuthor(id))
    {
        _itemService.Delete(item.Id);
        return Ok();
    }
    return Forbid();
}

或者我应该只检查方法内部的角色？

Answer 1

要检查用户是Admin 还是Author 的权限，您可以将multiple requirements 实现为来自@user2884707bond 的文档。

用于在您的场景中使用 multiple requrements。

您可以按照以下步骤操作：

• PermissionHandler.cs

          public class PermissionHandler : IAuthorizationHandler
  {
      public Task HandleAsync(AuthorizationHandlerContext context)
      {
          var pendingRequirements = context.PendingRequirements.ToList();
  
          foreach (var requirement in pendingRequirements)
          {
              if (requirement is ReadPermission)
              {
                  if (IsOwner(context.User, context.Resource) ||
                      IsAdmin(context.User, context.Resource))
                  {
                      context.Succeed(requirement);
                  }
              }
              else if (requirement is EditPermission ||
                       requirement is DeletePermission)
              {
                  if (IsOwner(context.User, context.Resource))
                  {
                      context.Succeed(requirement);
                  }
              }
          }
          return Task.CompletedTask;
      }
      private bool IsAdmin(ClaimsPrincipal user, object resource)
      {
          if (user.IsInRole("Admin"))
          {
              return true;
          }
          return false;
      }
  
      private bool IsOwner(ClaimsPrincipal user, object resource)
      {
          // Code omitted for brevity
  
          return true;
      }
  
      private bool IsSponsor(ClaimsPrincipal user, object resource)
      {
          // Code omitted for brevity
  
          return true;
      }
  }
  

• 要求

      public class ReadPermission : IAuthorizationRequirement
  {
      // Code omitted for brevity
  }
  public class EditPermission : IAuthorizationRequirement
  {
      // Code omitted for brevity
  }
  public class DeletePermission : IAuthorizationRequirement
  {
      // Code omitted for brevity
  }
  

• 在Startup.cs注册Requirement

          services.AddAuthorization(options =>
      {
          options.AddPolicy("Read", policy => policy.AddRequirements(new ReadPermission()));                
      });
      services.AddSingleton<IAuthorizationHandler, PermissionHandler>();
  

• 使用

   [Authorize(Policy = "Read")]
   [HttpPost("delete")]
   public IActionResult Delete([FromBody]Item item)
   {
        _itemService.Delete(item.Id);
        return Ok();
    }