I would like to add a check for Request.IsAuthenticated into my MasterPage (COntroller? Is there such a thing??). Is this possible? I want to redirect to a NoAccess.aspx page if the check fails.
The concept on MVC is different to web forms where you would do common logic on the master.
In ASP.NET MVC master page must only contain UI related setup.
In MVC you use Action filters: decorate your actions with [Authorize].
Did you create a project using the default MVC project template? It has everything you're looking for already in there. If you didn't go ahead and create one now.
Once you're in there you'll notice the [Authorize] attributes as #Aliostad mentioned. These are custom attributes that do the validation on the controller level.
Check out the MVC tutorial on web form security for a more detailed run-down on how it all meshes together: http://www.asp.net/mvc/tutorials/authenticating-users-with-forms-authentication-cs
You can achieve this by creating your own custom authentication attribute.
Create a new filter folder within your project and add the following class
public class NoAccessDirectAuthorizeAttribute : AuthorizeAttribute
{
public override void OnAuthorization(AuthorizationContext filterContext)
{
if (!filterContext.HttpContext.User.Identity.IsAuthenticated)
filterContext.Result = new RedirectResult("noaccess.aspx");
}
}
then decorate your home controller and other required controllers with the Authorization Attribute
[NoAccessDirectAuthorizeAttribute]
public class HomeController : Controller
This will redirect an unathenticated user to your noaccess.aspx page
Related
I am bit new in asp.net mvc. so i have a confusion where it is mention in project that unauthorize access redirect user to login page. before jumping to code i like to understand this and that is why i am positing this question where i am not able to post any code example rather i am looking for concept and guide line.
suppose i am developing a site with ASP.Net MVC core. i have created a empty project where i add two controller.
one is Home and login controller.
Home controller's index action is not protected by Authorized attribute but Home controller's product action is protected.
when user try to access product action then user should be redirected to login page if not signed in. so tell me how to setup project in classic mvc or mvc core where i will mention that user should be redirected to login page if user is not signed in.
i will not use identity rather i will check user credentials from db using ado.net.
please guide me step wise that what i need to follow.
Thanks
You can use type filter attributes to achieve that. For example if you have a BaseController class and it gets inherited in all your Controller classes, you can add a filter attribute there so that you can run your filtering's (for example: Redirect unauthorized user) before or after specific stages in the request processing pipeline.
[CheckAccessPublicStore]
public abstract class BaseController : Controller
{
}
If you want to only filter your Action method
[CheckAccessPublicStore]
public virtual IActionResult Product()
{
return new EmptyResult();
}
Then
public class CheckAccessPublicStoreAttribute : TypeFilterAttribute
{
public async Task OnAuthorizationAsync(AuthorizationFilterContext context)
{
if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.PublicStoreAllowNavigation))
context.Result = = new RedirectToRouteResult(new RouteValueDictionary {
{ "controller", "Customer" },
{ "action", "LogIn" }
});
}
}
For more you can learn here: https://learn.microsoft.com/en-us/aspnet/core/mvc/controllers/filters?view=aspnetcore-6.0
Lets say I want use URL like http://localhost/Controller/1/ChildController/Edit/1 to access the child record(s) of a parent record in ASP.NET MVC 5 project.
Using Attribute Routing we can route like below.
[Route("Controller/{id:int}/ChildController/Edit/{childId:int}")]
public ActionResult EditChildRecord(int id, int childId)
{
return View();
}
How to achieve same in convention-based routing ?
Thanks.
I think what you need it to create a areas.
Create a new area, and set your controllers there. A area will be equivalent to your main controller and the controllers to yours child's controllers.
http://www.tutorialsteacher.com/mvc/area-in-asp.net-mvc
I'm looking for a good place in the ASP.NET Web API lifecycle To update a property in my User entity that is purposed to store the date and time the User last made a request. Obviously, I could just add the code to each of my Controller methods but I would prefer doing this in one place outside of my controllers.
Ideally I would have access to the User principal and could use its Identity property to get the user's ID so that I could retrieve and update my User entity using Entity Framework.
I am currently looking at using a DelegatingHandler implementation.
Can anyone suggest the place in the lifecycle where I should carry this out? A code example would be appreciated.
Create an ActionFilter:
public class LogActionFilter : ActionFilterAttribute
{
public override void OnActionExecuted(HttpActionExecutedContext actionExecutedContext)
{
// Do your work
}
}
Yes, but wouldn't I have to add the ActionFilter to each and every controller method?
No, you can apply it to the controller or to actions.
Alternatively, you can do the following and you will not have to apply it to every controller (sort of like a global filter):
[LogActionFilter ]
public class LogableApiController : ApiController
{
...
}
Then inherit that wherever you want.
And lastly, another option is to add to global filters by finding the App_Start/FilterConfig.cs and add:
public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
filters.Add(new LogActionFilter());
}
So I have shown you how to apply it to action level, controller level, one or more controllers but not all controllers and then how to apply it to all controllers (global).
I would create an Attribute for your Controller to execute the update on your User Entity with an ActionFilter.
This example explain how to create an attribute for a controller method, it is the same way to do it: Custom Attribute above a controller function
b.e, your controller would be like this:
[SaveUserRequest]
public class HomeController : ApiController
Could someone tell me which is the front controller in MVC 4 c# visual studio please?
I mean, i have to do a big application and i want add security to restrict the access to the controllers and actions. I used to do this in the Logistic of the Front Controller in CodeIgniter, adding a token to the session, so if someone wanted to write the route manually on the browser he couldnt access.
I've been reading about [Authorize(Roles="Admin")] and i have to admit that is a solution, but that means i have to write in every method of the all controllers, and i want to have that centralized in the front-controller with IF/ELSE.
PD: If you don't know how to do this, at least try to tell me where can i find the front controller in MVC c# visual studio please.
Thanks for all.
There is no front controller in MVC. You need to create a base controller , And your every controller will inherit Base controller.
public class BaseController : Controller
{
protected override void OnActionExecuting(ActionExecutingContext filterContext)
{
var getControllerName = filterContext.ActionDescriptor.ControllerDescriptor.ControllerName;
var getActionName = filterContext.ActionDescriptor.ActionName;
//Write your code here
}
}
Now Inherit your controller with Base controller.
public class AccountController : BaseController
{
//Your action goes here.
}
There is no such thing as a front controller in ASP MVC. I think the thing you're looking for is some sort of base controller where all of the other controllers inherit from.
You can add this Authorize attribute to methods or classes (whole controllers). If every action needs this attribute I suggest to create a master controller and let every controller inherit from this controller.
Consider using action filters.
http://www.asp.net/mvc/overview/older-versions-1/controllers-and-routing/understanding-action-filters-cs
I have an ASP.NET MVC web application.
There's a welcome page in my application, and i wish for the user to complete some steps on that page before allowing him to use the application.
I'm trying to accomplish 2 things:
Ensure that the user is always redirected to that page until he completes the required steps. Note: the user is logged in when he is at the welcome page.
Ignore all requests made by that user to any of the controllers, except for a few specific requests to a specific controller.
What is the correct way to do the above?
Thanks.
What i have done is:
Create a class that derives from Controller and add the logic to redirect if not Logged in:
public class CustomController : Controller
{
protected override void OnActionExecuting(ActionExecutingContext filterContext)
{
if (!LoggedIn) //Here you decide how to check if the user is Logged in
{
filterContext.Result = new RedirectToRouteResult(new RouteValueDictionary(new
{
controller = "YourLogInControllerName",
action = "YourLoginActionName"
}));
}
else
{
base.OnActionExecuting(filterContext);
}
}
}
Then all Controllers derive from this CustomController class.
Sounds like you could use the session for that, or other (more persistent) storage if you must make sure the visitors finish these 'required steps', so you can store it when they've fininshed them.
I created a custom authorise attribute that redirected the use to my login page if they didn't meet the criteria I set. This then allowed me to use [AuthorizeAdminArea] on my base controller which stopped access to all areas. I then used [AllowAnonymous] to allow access to the login area.
Take a look at the SimpleMemshipProvider
Use a Role and only allow access to the other controllers if the user has this Role. Add the user to this Role when they have completed the necessary steps.
See http://msdn.microsoft.com/en-us/library/9ab2fxh0.aspx