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Anton Wieslander
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Reflection
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‎README.md

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@@ -12,3 +12,4 @@ Full Playlist can be found [here](https://www.youtube.com/playlist?list=PLOeFnOV
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- [Channels](https://youtu.be/E0Ld7ZgE4oY)
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- [MVC](https://youtu.be/u4O-b1BJg98)
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- [IEnumerable](https://youtu.be/at6weLnskpU)
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- [Reflection](https://youtu.be/cdG2JxuZvNI)

‎Reflection/Reflection.sln

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 16
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VisualStudioVersion = 16.0.30011.22
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WebApp", "WebApp\WebApp.csproj", "{FB323F04-C6AE-41C2-9047-934BB7C297D0}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{FB323F04-C6AE-41C2-9047-934BB7C297D0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{FB323F04-C6AE-41C2-9047-934BB7C297D0}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{FB323F04-C6AE-41C2-9047-934BB7C297D0}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{FB323F04-C6AE-41C2-9047-934BB7C297D0}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {90DE1BA6-8E4D-4628-91DA-9A0665BD81EB}
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EndGlobalSection
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EndGlobal

‎Reflection/WebApp/AuthHandler.cs

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using Microsoft.AspNetCore.Authorization;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.AspNetCore.Mvc.Controllers;
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using Microsoft.AspNetCore.Routing;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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namespace WebApp
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{
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public class AutoGeneratedClaim : IAuthorizationRequirement
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{
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public AutoGeneratedClaim()
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{}
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}
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public class AuthHandler : AuthorizationHandler<AutoGeneratedClaim>
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{
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protected override Task HandleRequirementAsync(AuthorizationHandlerContext context, AutoGeneratedClaim requirement)
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{
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var resource = context.Resource;
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if(resource is RouteEndpoint endpoint)
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{
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var metadata = endpoint.Metadata;
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var controllerAD = (ControllerActionDescriptor)
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metadata.FirstOrDefault(x => x is ControllerActionDescriptor);
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var controller = controllerAD.ControllerTypeInfo;
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var action = controllerAD.MethodInfo;
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var targetClaim = string.Concat(controller.ToString(), ".", action.ToString().Split(" ").Last());
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if(context.User.Claims.Any(x => x.Type.Equals(Constants.WebAppClaimType)
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&& x.Value.Equals(targetClaim)))
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{
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context.Succeed(requirement);
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return Task.CompletedTask;
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}
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}
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context.Fail();
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return Task.CompletedTask;
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}
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}
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}

‎Reflection/WebApp/ClaimsService.cs

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using Microsoft.AspNetCore.Authorization;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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using System.Threading.Tasks;
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namespace WebApp
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{
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public class ClaimsService
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{
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public IEnumerable<string> Claims()
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{
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var authAttr = typeof(AuthorizeAttribute);
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var anonAttr = typeof(AllowAnonymousAttribute);
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return typeof(Startup).Assembly.GetTypes()
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.Where(x => x.Name.EndsWith("Controller"))
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.SelectMany(x => x.GetMethods()
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.Where(m => m.DeclaringType.Equals(x)))
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.Where(x => x.GetCustomAttribute(authAttr) != null
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|| x.DeclaringType.GetCustomAttribute(authAttr) != null)
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.Where(x => x.GetCustomAttribute(anonAttr) == null)
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.Select(x => string.Concat(x.DeclaringType.ToString(),
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".", x.ToString().Split(" ").Last()));
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}
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}
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}

‎Reflection/WebApp/Constants.cs

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namespace WebApp
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{
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public class Constants
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{
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public const string WebAppClaimType = nameof(WebAppClaimType);
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}
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}

‎Reflection/WebApp/Controllers/HomeController.cs

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using Microsoft.AspNetCore.Authentication;
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using Microsoft.AspNetCore.Authorization;
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using Microsoft.AspNetCore.Mvc;
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using System.Collections.Generic;
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using System.Linq;
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using System.Security.Claims;
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using System.Threading.Tasks;
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namespace WebApp.Controllers
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{
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public class HomeController : Controller
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{
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public string Index()
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{
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return "";
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}
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[HttpGet]
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public IActionResult SignIn([FromServices] ClaimsService claimsService)
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{
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return View(claimsService.Claims());
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}
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[HttpPost]
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public async Task<IActionResult> SignIn(IEnumerable<string> claims)
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{
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var identity = new ClaimsIdentity(claims.Select(x => new Claim(Constants.WebAppClaimType, x)), "Identity");
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var principal = new ClaimsPrincipal(identity);
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await HttpContext.SignInAsync(principal);
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return RedirectToAction("Index");
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}
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[Authorize]
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public string Secret()
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{
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return "";
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}
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}
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}

‎Reflection/WebApp/Controllers/ManageController.cs

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using Microsoft.AspNetCore.Authorization;
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using Microsoft.AspNetCore.Mvc;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace WebApp.Controllers
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{
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[Authorize]
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public class ManageController : Controller
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{
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[HttpGet()]
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public string Secure()
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{
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return "";
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}
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[HttpGet("{boi}")]
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public string Secure(string boi)
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{
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return "";
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}
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public string Secret()
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{
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return "";
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}
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[AllowAnonymous]
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public string Allowed()
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{
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return "";
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}
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}
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}

‎Reflection/WebApp/Program.cs

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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Hosting;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.Hosting;
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using Microsoft.Extensions.Logging;
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namespace WebApp
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{
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public class Program
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{
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public static void Main(string[] args)
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{
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CreateHostBuilder(args).Build().Run();
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}
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public static IHostBuilder CreateHostBuilder(string[] args) =>
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Host.CreateDefaultBuilder(args)
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.ConfigureWebHostDefaults(webBuilder =>
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{
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webBuilder.UseStartup<Startup>();
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});
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}
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}

‎Reflection/WebApp/Startup.cs

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using Microsoft.AspNetCore.Authorization;
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using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Hosting;
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using Microsoft.AspNetCore.Identity;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Hosting;
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namespace WebApp
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{
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public class Startup
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{
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public Startup(IConfiguration configuration)
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{
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Configuration = configuration;
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}
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public IConfiguration Configuration { get; }
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public void ConfigureServices(IServiceCollection services)
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{
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services.AddAuthentication("Cookie")
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.AddCookie("Cookie");
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services.AddAuthorization(config =>
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{
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var policyBuilder = new AuthorizationPolicyBuilder();
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config.DefaultPolicy = policyBuilder
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.AddRequirements(new AutoGeneratedClaim())
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.Build();
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});
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services.AddScoped<IAuthorizationHandler, AuthHandler>();
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services.AddSingleton<ClaimsService>();
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services.AddControllersWithViews();
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}
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public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
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{
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if (env.IsDevelopment())
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{
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app.UseDeveloperExceptionPage();
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}
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else
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{
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app.UseExceptionHandler("/Error");
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app.UseHsts();
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}
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app.UseHttpsRedirection();
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app.UseStaticFiles();
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app.UseRouting();
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app.UseAuthentication();
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app.UseAuthorization();
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app.UseEndpoints(endpoints =>
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{
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endpoints.MapDefaultControllerRoute();
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});
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}
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}
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}

‎Reflection/WebApp/Views/Home/SignIn.cshtml

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@model IEnumerable<string>
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<form action="/Home/SignIn" method="post">
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@foreach(var claim in Model)
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{
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<div>
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<label>@claim</label>
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<input type="checkbox" name="claims" value="@claim" />
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</div>
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}
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<button type="submit">Sign In</button>
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</form>

‎Reflection/WebApp/WebApp.csproj

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<Project Sdk="Microsoft.NET.Sdk.Web">
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<PropertyGroup>
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<TargetFramework>netcoreapp3.1</TargetFramework>
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</PropertyGroup>
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</Project>

‎Reflection/WebApp/appsettings.json

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{
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"Logging": {
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"LogLevel": {
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"Default": "Information",
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"Microsoft": "Warning",
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"Microsoft.Hosting.Lifetime": "Information"
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}
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}
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}

‎Reflection/WebApp/wwwroot/favicon.ico

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