109 lines
3.6 KiB
C#
109 lines
3.6 KiB
C#
#nullable enable
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using System.Net.Security;
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namespace gehGassiApp.Core.Helper
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{
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/// <summary>
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/// Hilfsklasse für das lokale Debugging.
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/// Ermöglicht den Zugriff auf die lokal REST-API
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/// </summary>
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public class DevHttpsConnectionHelper
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{
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/// <summary>
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/// Erstellt eine Instanz
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/// </summary>
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/// <param name="sslPort">Port</param>
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public DevHttpsConnectionHelper(int sslPort)
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{
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SslPort = sslPort;
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DevServerRootUrl = FormattableString.Invariant($"https://{DevServerName}:{SslPort}");
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#if WINDOWS
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LazyHttpClient = new Lazy<HttpClient>(() => new HttpClient());
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#else
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LazyHttpClient = new Lazy<HttpClient>(() => new HttpClient(GetPlatformMessageHandler()));
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#endif
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}
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public int SslPort { get; }
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public string DevServerName =>
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#if WINDOWS
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"localhost";
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#elif ANDROID
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"192.168.0.172";
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#elif IOS || MACCATALYST
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"192.168.0.172";
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#else
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throw new PlatformNotSupportedException("Only Windows and Android currently supported.");
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#endif
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public string DevServerRootUrl { get; }
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private Lazy<HttpClient> LazyHttpClient;
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public HttpClient HttpClient => LazyHttpClient.Value;
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public HttpMessageHandler? GetPlatformMessageHandler()
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{
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#if WINDOWS
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return null;
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#elif IOS || MACCATALYST
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var handler = new NSUrlSessionHandler
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{
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TrustOverrideForUrl = IsHttpsLocalhost
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};
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return handler;
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#elif ANDROID
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var handler = new CustomAndroidMessageHandler();
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handler.ServerCertificateCustomValidationCallback = (message, cert, chain, errors) =>
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{
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if (cert != null && cert.Issuer.Equals("CN=localhost"))
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return true;
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return errors == SslPolicyErrors.None;
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};
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return handler;
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#else
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throw new PlatformNotSupportedException("Only Windows and Android currently supported.");
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#endif
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}
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#if ANDROID
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internal sealed class CustomAndroidMessageHandler : Xamarin.Android.Net.AndroidMessageHandler
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{
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protected override Javax.Net.Ssl.IHostnameVerifier GetSSLHostnameVerifier(Javax.Net.Ssl.HttpsURLConnection connection)
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=> new CustomHostnameVerifier();
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private sealed class CustomHostnameVerifier : Java.Lang.Object, Javax.Net.Ssl.IHostnameVerifier
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{
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public bool Verify(string? hostname, Javax.Net.Ssl.ISSLSession? session)
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{
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return
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Javax.Net.Ssl.HttpsURLConnection.DefaultHostnameVerifier.Verify(hostname, session)
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|| hostname == "192.168.0.172" && session.PeerPrincipal?.Name == "CN=localhost";
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}
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}
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}
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#elif IOS || MACCATALYST
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public bool IsHttpsLocalhost(NSUrlSessionHandler sender, string url, Security.SecTrust trust)
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{
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if (url.StartsWith("https://localhost") || url.StartsWith("https://192.168.0.172"))
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return true;
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return false;
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}
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#endif
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}
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public static class DevHttpsConnectionHelperExtensions
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{
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public static IServiceCollection AddDevHttpClient(this IServiceCollection services, int sslPort)
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{
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var devSslHelper = new DevHttpsConnectionHelper(sslPort);
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var http = devSslHelper.HttpClient;
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http.BaseAddress = new Uri(devSslHelper.DevServerRootUrl);
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services.AddScoped(sp => http);
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return services;
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}
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}
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}
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