using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Net; using System.Net.Http; using System.Net.Http.Headers; using System.Threading.Tasks; using AspNetCore.Proxy; using AspNetCore.Proxy.Builders; using Microsoft.AspNetCore.Builder; using Microsoft.AspNetCore.Hosting; using Microsoft.AspNetCore.HttpsPolicy; using Microsoft.AspNetCore.Mvc; using Microsoft.AspNetCore.Rewrite; using Microsoft.Extensions.Configuration; using Microsoft.Extensions.DependencyInjection; using Microsoft.Extensions.FileProviders; using Microsoft.Extensions.Hosting; using Microsoft.Extensions.Logging; namespace Ksp.WebServer { public class Startup { public Startup(IConfiguration configuration) { Configuration = configuration; } public IConfiguration Configuration { get; } // This method gets called by the runtime. Use this method to add services to the container. public void ConfigureServices(IServiceCollection services) { services.AddControllers(); services.AddHttpClient("RedirectClient") .ConfigurePrimaryHttpMessageHandler(h => { return new HttpClientHandler { AllowAutoRedirect = false, UseCookies = false }; }); services.AddProxies(); } // This method gets called by the runtime. Use this method to configure the HTTP request pipeline. public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { if (env.IsDevelopment()) { app.UseDeveloperExceptionPage(); } else { app.UseHttpsRedirection(); } app.UseRouting(); app.UseAuthorization(); app.UseEndpoints(endpoints => { endpoints.MapControllers(); }); app.UseRewriter(new RewriteOptions() .AddRewrite("^grafik$", "grafik.html", true) ); app.UseStaticFiles(new StaticFileOptions { FileProvider = new PhysicalFileProvider( Path.Combine(env.ContentRootPath, "../../frontend/public")), }); app.RunProxy(proxy => proxy .UseHttp((context, args) => { return "https://ksp-test.ks.matfyz.cz"; }, opt => { opt.WithHttpClientName("RedirectClient"); opt.WithBeforeSend((cx, request) => { request.Headers.Authorization = new AuthenticationHeaderValue("Basic", "SECRET"); if (request.Headers.Referrer is object) request.Headers.Referrer = new UriBuilder(request.Headers.Referrer) { Host = "ksp-test.ks.matfyz.cz", Port = 443, Scheme = "https" }.Uri; // request.Headers.Remove("X-Forwarded-For"); // request.Headers.Remove("X-Forwarded-Proto"); // request.Headers.Remove("X-Forwarded-Host"); // request.Headers.Remove("Forwarded"); // request.Headers.Remove("Origin"); // request.Headers.Add("Origin", "https://ksp-test.ks.matfyz.cz"); // Console.WriteLine(request); return Task.CompletedTask; }); opt.WithAfterReceive((cx, response) => { // Console.WriteLine(response); if (response.Headers.Location is object && response.Headers.Location.Host == "ksp-test.ks.matfyz.cz") { response.Headers.Location = new UriBuilder(response.Headers.Location) { Host = cx.Request.Host.Host, Port = cx.Request.Host.Port.Value, Scheme = cx.Request.Scheme }.Uri; } if (response.Headers.TryGetValues("Set-Cookie", out var v)) { response.Headers.Remove("Set-Cookie"); response.Headers.Add("Set-Cookie", v.Select(s => s.Replace("; secure", "") .Replace("; domain=ksp-test.ks.matfyz.cz", $"; domain={cx.Request.Host.Host}") )); } return Task.CompletedTask; }); })); } } }