Blazor Tiered One User Multiple Login #6069

10 Answer(s)

• 

  0

  liangshiwei created 3 years ago

  Fullstack Developer

  Hi,

  We have an example: https://github.com/abpframework/abp-samples/tree/master/ConcurrentLogin https://github.com/abpframework/abp-samples/blob/master/ConcurrentLogin/src/ConcurrentLogin.Web/ConcurrentLoginWebModule.cs#L264

  It's MVCUI but the principle is the same. use middleware to check the current user and log out.

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  0

  coskunkula created 3 years ago

  Thank you for your interest. I tried the codes in this example. But I guess it didn't work because my project was layered. AuthServer project won't log out

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  0

  liangshiwei created 3 years ago

  Fullstack Developer

  Hi,

  You can also add the middleware to the AuthServer project.

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  0

  coskunkula created 3 years ago

  app.Use(async (httpContext, func) =>
          {
              var currentUser = httpContext.RequestServices.GetRequiredService<ICurrentUser>();
              if (currentUser.IsAuthenticated)
              {
                  var claimToken = currentUser.GetConcurrentLoginToken();
                  var userManager = httpContext.RequestServices.GetRequiredService<IdentityUserManager>();
                  var user = await userManager.FindByIdAsync(currentUser.Id.ToString());
                  if (claimToken != user.GetProperty(ConcurrentLoginConsts.ConcurrentLoginToken).ToString())
                  {
                      //Cookies
                      if (httpContext.User.Identity != null && httpContext.User.Identity.AuthenticationType == "Identity.Application")
                      {
                          await httpContext.RequestServices.GetRequiredService<AbpSignInManager>().SignOutAsync();
                          await httpContext.ChallengeAsync("Identity.Application");
                      }
  
                      //JWT
                      if (httpContext.User.Identity != null && httpContext.User.Identity.AuthenticationType == "AuthenticationTypes.Federation")
                      {
                          await httpContext.ChallengeAsync(JwtBearerDefaults.AuthenticationScheme);
                      }
  
                      //Other
  
                      return;
                  }
              }
  
              await func();
  

      });
  

  //JWT if (httpContext.User.Identity != null && httpContext.User.Identity.AuthenticationType == "AuthenticationTypes.Federation") { await httpContext.ChallengeAsync(JwtBearerDefaults.AuthenticationScheme); }

  It falls under the "AuthenticationTypes.Federation" condition but It is not covered by the "Identity.Application" condition. so it doesn't log out

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• 

  0

  liangshiwei created 3 years ago

  Fullstack Developer

  Hi,

  You can try :

  Blazor server project

  app.UseAuthorization();
  
  app.Use(async (httpContext, func) =>
  {
      var currentUser = httpContext.RequestServices.GetRequiredService<ICurrentUser>();
      if (currentUser.IsAuthenticated && !httpContext.Request.Path.ToString().Contains("account/logout", StringComparison.InvariantCultureIgnoreCase))
      {
          var userAppService = httpContext.RequestServices.GetRequiredService<IIdentityUserAppService>();
          var user = await userAppService.GetAsync(currentUser.GetId());
          // you can also use cache
          if (claimToken != user.GetProperty(ConcurrentLoginConsts.ConcurrentLoginToken).ToString())
          {
               httpContext.Response.Redirect("/Account/logout");
               return;
          }
      }
  
      await func();
  });
  

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• 

  0

  coskunkula created 3 years ago

  You are a genius my friend. worked. But there is one more small problem. I don't know if it's because it's Blazor, but if I press f5 it redirects to the logout page. If I don't press f5, I can view the pages without logging out.

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  coskunkula created 3 years ago

  Now I noticed something. I logged in to the system and opened any page. Then I opened a new page in the side tab. and I continued to perform the operations on that page. Then I logged out of the first tab I opened. but I continued trading in the second tab I opened. So it didn't terminate the session. but when I did f5 I saw that the session was logged out

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  0

  liangshiwei created 3 years ago

  Fullstack Developer

  Hi,

  Okay, Because the Blazor server is handled over a SignalR connection, you also need to add a HubFilter to check the current user

  https://learn.microsoft.com/en-us/aspnet/core/signalr/hub-filters?view=aspnetcore-7.0#create-hub-filters

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  coskunkula created 3 years ago

  I have no idea how to implement this. Could you please give an example?

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  0

  liangshiwei created 3 years ago

  Fullstack Developer

  Hi,

  Try:

  public class MyHubFilter : IHubFilter
  {
      public async ValueTask<object?> InvokeMethodAsync(HubInvocationContext invocationContext, Func<HubInvocationContext, ValueTask<object?>> next)
      {
          var currentUser = invocationContext.ServiceProvider.GetRequiredService<ICurrentUser>();
  
          if (!currentUser.IsAuthenticated || invocationContext.HubMethodName == "StartCircuit")
          {
              return await next.Invoke(invocationContext);
          }
  
          var args = invocationContext.HubMethodArguments.FirstOrDefault()?.ToString();
          if (args != null && args.Contains("account/logout", StringComparison.InvariantCultureIgnoreCase))
          {
              return await next.Invoke(invocationContext);
          }
          
          var userAppService = invocationContext.ServiceProvider.GetRequiredService<IIdentityUserAppService>();
          var user = await userAppService.GetAsync(currentUser.GetId());
          // you can also use cache
          if (claimToken != user.GetProperty(ConcurrentLoginConsts.ConcurrentLoginToken).ToString())
          {
              await invocationContext.Hub.Clients.Caller.SendAsync("JS.Error", "You have been logged out from another browser or tab. Please refresh this page.");
              throw new AbpAuthorizationException();
          }
          
          return await next.Invoke(invocationContext);
      }
  }
  
  
  Configure<HubOptions>(options =>
  {
      options.AddFilter<MyHubFilter>();
  });
  

  And

  

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