我试图使一个自定义授权属性在ASP。净的核心。在以前的版本中，可以重写bool AuthorizeCore(HttpContextBase httpContext)。但是这在AuthorizeAttribute中不再存在。
当前制作自定义AuthorizeAttribute的方法是什么?
我想要完成的:我正在头授权中接收会话ID。通过该ID，我将知道特定操作是否有效。
当前回答
为了在我们的应用程序中进行授权。我们必须根据在授权属性中传递的参数调用服务。
例如，如果我们想检查登录的医生是否可以查看病人的预约，我们将传递“View_Appointment”到自定义授权属性，并在DB服务中检查该权利，并根据结果进行审查。下面是这个场景的代码:
public class PatientAuthorizeAttribute : TypeFilterAttribute
{
public PatientAuthorizeAttribute(params PatientAccessRights[] right) : base(typeof(AuthFilter)) //PatientAccessRights is an enum
{
Arguments = new object[] { right };
}
private class AuthFilter : IActionFilter
{
PatientAccessRights[] right;
IAuthService authService;
public AuthFilter(IAuthService authService, PatientAccessRights[] right)
{
this.right = right;
this.authService = authService;
}
public void OnActionExecuted(ActionExecutedContext context)
{
}
public void OnActionExecuting(ActionExecutingContext context)
{
var allparameters = context.ActionArguments.Values;
if (allparameters.Count() == 1)
{
var param = allparameters.First();
if (typeof(IPatientRequest).IsAssignableFrom(param.GetType()))
{
IPatientRequest patientRequestInfo = (IPatientRequest)param;
PatientAccessRequest userAccessRequest = new PatientAccessRequest();
userAccessRequest.Rights = right;
userAccessRequest.MemberID = patientRequestInfo.PatientID;
var result = authService.CheckUserPatientAccess(userAccessRequest).Result; //this calls DB service to check from DB
if (result.Status == ReturnType.Failure)
{
//TODO: return apirepsonse
context.Result = new StatusCodeResult((int)System.Net.HttpStatusCode.Forbidden);
}
}
else
{
throw new AppSystemException("PatientAuthorizeAttribute not supported");
}
}
else
{
throw new AppSystemException("PatientAuthorizeAttribute not supported");
}
}
}
}
在API操作中，我们像这样使用它:
[PatientAuthorize(PatientAccessRights.PATIENT_VIEW_APPOINTMENTS)] //this is enum, we can pass multiple
[HttpPost]
public SomeReturnType ViewAppointments()
{
}
其他回答
下面的代码适合我在。net Core 5中使用
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method)]
public class AccessAuthorizationAttribute : AuthorizeAttribute, IAuthorizationFilter
{
public string Module { get; set; } //Permission string to get from controller
public AccessAuthorizationAttribute(string module)
{
Module = module;
}
public void OnAuthorization(AuthorizationFilterContext context)
{
//Validate if any permissions are passed when using attribute at controller or action level
if (string.IsNullOrEmpty(Module))
{
//Validation cannot take place without any permissions so returning unauthorized
context.Result = new UnauthorizedResult();
return;
}
if (hasAccess)
{
return;
}
context.Result = new UnauthorizedResult();
return;
}
}
我有不记名令牌，我可以阅读索赔。 我在控制器和动作上使用该属性
public class CustomAuthorizationAttribute : ActionFilterAttribute
{
public string[] Claims;
public override void OnActionExecuting(ActionExecutingContext context)
{
// check user
var contextUser = context?.HttpContext?.User;
if (contextUser == null)
{
throw new BusinessException("Forbidden");
}
// check roles
var roles = contextUser.FindAll("http://schemas.microsoft.com/ws/2008/06/identity/claims/role").Select(c => c.Value).ToList();
if (!roles.Any(s => Claims.Contains(s)))
{
throw new BusinessException("Forbidden");
}
base.OnActionExecuting(context);
}
}
例子
[CustomAuthorization(Claims = new string[]
{
nameof(AuthorizationRole.HR_ADMIN),
nameof(AuthorizationRole.HR_SETTING)
})]
[Route("api/[controller]")]
[ApiController]
public class SomeAdminController : ControllerBase
{
private readonly IMediator _mediator;
public SomeAdminController(IMediator mediator)
{
_mediator = mediator;
}
[HttpGet("list/SomeList")]
public async Task<IActionResult> SomeList()
=> Ok(await _mediator.Send(new SomeListQuery()));
}
这就是角色
public struct AuthorizationRole
{
public static string HR_ADMIN;
public static string HR_SETTING;
}
当前制作自定义AuthorizeAttribute的方法是什么
对于纯授权场景(例如仅限制特定用户访问)，建议使用新的授权块:https://github.com/aspnet/MusicStore/blob/1c0aeb08bb1ebd846726232226279bbe001782e1/samples/MusicStore/Startup.cs#L84-L92
public class Startup
{
public void ConfigureServices(IServiceCollection services)
{
services.Configure<AuthorizationOptions>(options =>
{
options.AddPolicy("ManageStore", policy => policy.RequireClaim("Action", "ManageStore"));
});
}
}
public class StoreController : Controller
{
[Authorize(Policy = "ManageStore"), HttpGet]
public async Task<IActionResult> Manage() { ... }
}
对于身份验证，最好在中间件级别进行处理。
你到底想达到什么目的?
什么? !
我决定再补充一个简单的答案。B/c我发现大多数答案都有点过度设计。也因为我需要一种授予授权的方法，而不仅仅是否认它。这里的大多数答案都提供了一种“加强”安全性的方法，但我想“放松”它。例如:“如果配置了某些应用程序设置，则允许匿名用户访问”。
public class MyAuthAttribute : Attribute, IAuthorizationFilter
{
public void OnAuthorization(AuthorizationFilterContext context)
{
//check access
if (CheckPermissions())
{
//all good, add optional code if you want. Or don't
}
else
{
//DENIED!
//return "ChallengeResult" to redirect to login page (for example)
context.Result = new ChallengeResult(CookieAuthenticationDefaults.AuthenticationScheme);
}
}
}
就是这样。不需要混淆“策略”，“声明”，“处理程序”和其他[哔]
用法:
// GET api/Get/5
[MyAuth]
public ActionResult<string> Get(int id)
{
return "blahblah";
}
为了在我们的应用程序中进行授权。我们必须根据在授权属性中传递的参数调用服务。
例如，如果我们想检查登录的医生是否可以查看病人的预约，我们将传递“View_Appointment”到自定义授权属性，并在DB服务中检查该权利，并根据结果进行审查。下面是这个场景的代码:
public class PatientAuthorizeAttribute : TypeFilterAttribute
{
public PatientAuthorizeAttribute(params PatientAccessRights[] right) : base(typeof(AuthFilter)) //PatientAccessRights is an enum
{
Arguments = new object[] { right };
}
private class AuthFilter : IActionFilter
{
PatientAccessRights[] right;
IAuthService authService;
public AuthFilter(IAuthService authService, PatientAccessRights[] right)
{
this.right = right;
this.authService = authService;
}
public void OnActionExecuted(ActionExecutedContext context)
{
}
public void OnActionExecuting(ActionExecutingContext context)
{
var allparameters = context.ActionArguments.Values;
if (allparameters.Count() == 1)
{
var param = allparameters.First();
if (typeof(IPatientRequest).IsAssignableFrom(param.GetType()))
{
IPatientRequest patientRequestInfo = (IPatientRequest)param;
PatientAccessRequest userAccessRequest = new PatientAccessRequest();
userAccessRequest.Rights = right;
userAccessRequest.MemberID = patientRequestInfo.PatientID;
var result = authService.CheckUserPatientAccess(userAccessRequest).Result; //this calls DB service to check from DB
if (result.Status == ReturnType.Failure)
{
//TODO: return apirepsonse
context.Result = new StatusCodeResult((int)System.Net.HttpStatusCode.Forbidden);
}
}
else
{
throw new AppSystemException("PatientAuthorizeAttribute not supported");
}
}
else
{
throw new AppSystemException("PatientAuthorizeAttribute not supported");
}
}
}
}
在API操作中，我们像这样使用它:
[PatientAuthorize(PatientAccessRights.PATIENT_VIEW_APPOINTMENTS)] //this is enum, we can pass multiple
[HttpPost]
public SomeReturnType ViewAppointments()
{
}
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