Added MAUI android sample

sandbox/OpenIddict.Sandbox.Maui.Client/App.xaml.cs

@@ -1,10 +1,8 @@
-#if IOS || MACCATALYST || WINDOWS
-namespace OpenIddict.Sandbox.Maui.Client;
+namespace OpenIddict.Sandbox.Maui.Client;
 
 public partial class App : Application
 {
     public App() => InitializeComponent();
 
     protected override Window CreateWindow(IActivationState? activationState) => new(new AppShell());
 }
-#endif

sandbox/OpenIddict.Sandbox.Maui.Client/AppShell.xaml.cs

@@ -1,8 +1,6 @@
-#if IOS || MACCATALYST || WINDOWS
-namespace OpenIddict.Sandbox.Maui.Client;
+namespace OpenIddict.Sandbox.Maui.Client;
 
 public partial class AppShell : Shell
 {
     public AppShell() => InitializeComponent();
 }
-#endif

sandbox/OpenIddict.Sandbox.Maui.Client/MainPage.xaml

@@ -2,62 +2,71 @@
 <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              x:Class="OpenIddict.Sandbox.Maui.Client.MainPage">
-
     <ScrollView>
-        <VerticalStackLayout 
-            Spacing="25" 
-            Padding="30,0" 
-            VerticalOptions="Center">
-
-            <Image
-                Source="dotnet_bot.png"
-                SemanticProperties.Description="Cute dot net bot waving hi to you!"
-                HeightRequest="200"
-                HorizontalOptions="Center" />
-
-            <Label
-                Text="Hello, World!"
-                SemanticProperties.HeadingLevel="Level1"
-                FontSize="32"
-                HorizontalOptions="Center" />
-
-            <Label
-                x:Name="Message"
-                Text="Welcome to .NET Multi-platform App UI"
-                SemanticProperties.HeadingLevel="Level2"
-                SemanticProperties.Description="Welcome to dot net Multi platform App U I"
-                FontSize="18"
-                HorizontalOptions="Center" />
-
-            <Button
-                x:Name="LocalLogin"
-                Text="Log in using the local server"
-                SemanticProperties.Hint="Starts a new authentication flow"
-                Clicked="OnLocalLoginButtonClicked"
-                HorizontalOptions="Center" />
-
-            <Button
-                x:Name="LocalLoginWithGitHub"
-                Text="Log in using the local server (preferred service: GitHub)"
-                SemanticProperties.Hint="Starts a new authentication flow"
-                Clicked="OnLocalLoginWithGitHubButtonClicked"
-                HorizontalOptions="Center" />
-
-            <Button
-                x:Name="TwitterLogin"
-                Text="Log in using Twitter"
-                SemanticProperties.Hint="Starts a new authentication flow"
-                Clicked="OnTwitterLoginButtonClicked"
-                HorizontalOptions="Center" />
-
-            <Button
-                x:Name="LocalLogout"
-                Text="Log out from the local server"
-                SemanticProperties.Hint="Starts a new logout flow"
-                Clicked="OnLocalLogoutButtonClicked"
-                HorizontalOptions="Center" />
-
-        </VerticalStackLayout>
+        <Grid>
+            <VerticalStackLayout Spacing="25" 
+                                 Padding="30,0" 
+                                 VerticalOptions="Center"
+                                 x:Name="LoginForm">
+
+                <Image Source="dotnet_bot.png"
+                       SemanticProperties.Description="Cute dot net bot waving hi to you!"
+                       HeightRequest="200"
+                       HorizontalOptions="Center" />
+
+                <Label Text="Hello, World!"
+                       SemanticProperties.HeadingLevel="Level1"
+                       FontSize="32"
+                       HorizontalOptions="Center" />
+
+                <Label x:Name="Message"
+                       Text="Welcome to .NET Multi-platform App UI"
+                       SemanticProperties.HeadingLevel="Level2"
+                       SemanticProperties.Description="Welcome to dot net Multi platform App U I"
+                       FontSize="18"
+                       HorizontalOptions="Center" />
+
+                <Button x:Name="LocalLogin"
+                        Text="Log in using the local server"
+                        SemanticProperties.Hint="Starts a new authentication flow"
+                        Clicked="OnLocalLoginButtonClicked"
+                        HorizontalOptions="Center" />
+
+                <Button x:Name="LocalLoginWithGitHub"
+                        Text="Log in using the local server (preferred service: GitHub)"
+                        SemanticProperties.Hint="Starts a new authentication flow"
+                        Clicked="OnLocalLoginWithGitHubButtonClicked"
+                        HorizontalOptions="Center" />
+
+                <Button x:Name="TwitterLogin"
+                        Text="Log in using Twitter"
+                        SemanticProperties.Hint="Starts a new authentication flow"
+                        Clicked="OnTwitterLoginButtonClicked"
+                        HorizontalOptions="Center" />
+
+                <Button x:Name="LocalLogout"
+                        Text="Log out from the local server"
+                        SemanticProperties.Hint="Starts a new logout flow"
+                        Clicked="OnLocalLogoutButtonClicked"
+                            HorizontalOptions="Center" />
+
+            </VerticalStackLayout>
+
+            <VerticalStackLayout x:Name="ProgressView" 
+                                 Spacing="25" 
+                                 VerticalOptions="Center"
+                                 IsVisible="False">
+                  <Label Text="Logging in..."
+                         FontSize="32"
+                         HorizontalOptions="Center" />
+                <ProgressBar Progress="0.5"
+                             WidthRequest="200"
+							 HorizontalOptions="Center"  />
+                <Button Text="Cancel"
+                        Clicked="OnCancelButtonClicked"
+						HorizontalOptions="Center"  />
+            </VerticalStackLayout>
+        </Grid>
     </ScrollView>
 
 </ContentPage>

sandbox/OpenIddict.Sandbox.Maui.Client/MainPage.xaml.cs

@@ -1,12 +1,11 @@
-#if IOS || MACCATALYST || WINDOWS
+using System.Globalization;
 using OpenIddict.Abstractions;
 using OpenIddict.Client;
 using static OpenIddict.Abstractions.OpenIddictConstants;
 using static OpenIddict.Abstractions.OpenIddictExceptions;
 using static OpenIddict.Client.WebIntegration.OpenIddictClientWebIntegrationConstants;
 
 namespace OpenIddict.Sandbox.Maui.Client;
-
 public partial class MainPage : ContentPage
 {
     private readonly OpenIddictClientService _service;
@@ -33,32 +32,42 @@ private async void OnLocalLogoutButtonClicked(object sender, EventArgs e)
     private async void OnTwitterLoginButtonClicked(object sender, EventArgs e)
         => await LogInAsync(Providers.Twitter);
 
+
+    private void OnCancelButtonClicked(object sender, EventArgs e)
+    {
+        _source?.Cancel();
+    }
+
+    private CancellationTokenSource? _source = null;
+
     private async Task LogInAsync(string provider, Dictionary<string, OpenIddictParameter>? parameters = null)
     {
         // Disable the buttons to prevent concurrent operations.
         LocalLogin.IsEnabled = false;
         LocalLoginWithGitHub.IsEnabled = false;
         LocalLogout.IsEnabled = false;
         TwitterLogin.IsEnabled = false;
+        LoginForm.Opacity = 0.2d;
+        ProgressView.IsVisible = true;
 
         try
         {
-            using var source = new CancellationTokenSource(delay: TimeSpan.FromSeconds(90));
+            _source = new CancellationTokenSource();
 
             try
             {
                 // Ask OpenIddict to initiate the authentication flow (typically, by starting the system browser).
                 var result = await _service.ChallengeInteractivelyAsync(new()
                 {
                     AdditionalAuthorizationRequestParameters = parameters,
-                    CancellationToken = source.Token,
+                    CancellationToken = _source.Token,
                     ProviderName = provider
                 });
 
                 // Wait for the user to complete the authorization process.
                 var principal = (await _service.AuthenticateInteractivelyAsync(new()
                 {
-                    CancellationToken = source.Token,
+                    CancellationToken = _source.Token,
                     Nonce = result.Nonce
                 })).Principal;
 
@@ -88,6 +97,9 @@ private async Task LogInAsync(string provider, Dictionary<string, OpenIddictPara
             LocalLoginWithGitHub.IsEnabled = true;
             LocalLogout.IsEnabled = true;
             TwitterLogin.IsEnabled = true;
+            LoginForm.Opacity = 1d;
+            ProgressView.IsVisible = false;
+            _source?.Dispose();
         }
     }
 
@@ -147,4 +159,3 @@ await _service.AuthenticateInteractivelyAsync(new()
         }
     }
 }
-#endif

sandbox/OpenIddict.Sandbox.Maui.Client/MauiHostApplicationLifetime.cs

@@ -1,5 +1,4 @@
-#if IOS || MACCATALYST || WINDOWS
-using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Hosting;
 
 namespace OpenIddict.Sandbox.Maui.Client;
 
@@ -19,4 +18,3 @@ public void StopApplication()
         Environment.Exit(0);
     }
 }
-#endif

sandbox/OpenIddict.Sandbox.Maui.Client/MauiHostedServiceAdapter.cs

@@ -1,5 +1,4 @@
-#if IOS || MACCATALYST || WINDOWS
-using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Hosting;
 
 namespace OpenIddict.Sandbox.Maui.Client;
 
@@ -13,4 +12,3 @@ public MauiHostedServiceAdapter(IHostedService service)
     public void Initialize(IServiceProvider services)
         => Task.Run(() => _service.StartAsync(CancellationToken.None)).GetAwaiter().GetResult();
 }
-#endif

sandbox/OpenIddict.Sandbox.Maui.Client/MauiProgram.cs

@@ -1,9 +1,10 @@
-#if IOS || MACCATALYST || WINDOWS
-using System.Net.Http;
+using System.Net.Http;
+using System.Security.Cryptography;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Hosting.Internal;
 using Microsoft.Extensions.Logging;
+using Microsoft.IdentityModel.Tokens;
 using OpenIddict.Client;
 using OpenIddict.Client.SystemIntegration;
 using static OpenIddict.Abstractions.OpenIddictConstants;
@@ -48,6 +49,9 @@ public static MauiApp CreateMauiApp()
                 options.AddDevelopmentEncryptionCertificate()
                        .AddDevelopmentSigningCertificate();
 
+                // remove DevelopmentSigning/Encryption certificates and uncomment the following line if you run on iOS or Android
+                // options.AddCertificatesForMobileApps();
+
                 // Register the operating system integration.
                 options.UseSystemIntegration();
 
@@ -67,7 +71,7 @@ public static MauiApp CreateMauiApp()
                 // Add a client registration matching the client application definition in the server project.
                 options.AddRegistration(new OpenIddictClientRegistration
                 {
-                    Issuer = new Uri("https://localhost:44395/", UriKind.Absolute),
+                    Issuer = new Uri("https://vsr1d2md-44349.euw.devtunnels.ms/", UriKind.Absolute),
                     ProviderName = "Local",
 
                     ClientId = "maui",
@@ -135,5 +139,30 @@ public static MauiApp CreateMauiApp()
 
         return builder.Build();
     }
+
+    /// <summary>
+    ///     Note: Do not use the following keys in production!
+    ///     there just added so we can authenticate from Android (Maui/Avalonia), iOS (Maui/Avalonia) and Macos, since on these platforms the following does not work
+    ///     
+    ///       options.AddDevelopmentEncryptionCertificate()
+    ///         .AddDevelopmentSigningCertificate();
+    ///     
+    ///     this is because
+    ///     1. Adding an X509 certificate to the system store is not supported (throws on iOS and Android)
+    ///     2. and even if so, it would be a different machine - therefore different store - and client and server would not use the same certificate!
+    /// </summary>
+    /// <param name="options"></param>
+    /// <returns></returns>
+    private static OpenIddictClientBuilder AddCertificatesForMobileApps(this OpenIddictClientBuilder options)
+    {
+        var privateKeyXml = "<RSAKeyValue><Modulus>uSQBwbidg8/lAw3N3xeWmc9uYQPMHH5fODGmER6uXRzzJaL8upFWXanwts7ILNFOFAWogxQuWaTqu4dUFDVuXhJsdxpT4YZy0+k8QEMyBi6VIenQtKhYgiCgx9RK6cAuXRN1X6iQ2F+3MaenUGxztEOSQ1iJarV7E5od0o0doDl0TcW/wVqnwpAc5j8K/06kICuy1Pb1glHZsF8vzCgTPwdBTAYLGbzJWWxpLNiEFDuvJR6lopSSxKpurvzYXgpZHMZuOUlmQM/XGXjCYctHldAmr+gp8/xtufx3w2/V3gApLS6kWdkA9xazLOt7Xqb2QBGNGbunVzhtGg2rBYdBXQ==</Modulus><Exponent>AQAB</Exponent><P>wiiY1qCfHaiO+FoVpB3OocUYtqI9WvXUV2tk/JIOVuBth5oRg01GMN1cMA085YcwlV1d2RQVqGXdhAKHUwyi73luFQ/yt5ehemPUQPau03Pv8GkySLSGsbwuK+FKpDQ9kdupG1eW6dBt91um4Q1Gtu+GAJ2LkucYRHA2yx6osIs=</P><Q>9BwZ5gtnMw70n/h8NvULco5RxxpfoQ++2D7iQ6rc7i27/k53E0is2L03PP/LR8bV/14z+ixMW6rH7G2d475NIzFTrR4HjZdf+i05Fq7N/xvNCLrUvAd0CWqxYrume0t9zfw62JQtp5IYQ3g9K7DxUwfY9qVwYlZByLkgrUz26rc=</Q><DP>m2n5pVte4lOpVXxudDbzzqPA+3f0WtoKBYvOgym6VqpAolmeCRcSx0x5XXFLPIMxTW42D+w2xdv8K44GmmC0D7KIfk2MwI6cUCaWoQWUvWfBORRLjs0KQDzcTH2CzNuQKS/GNj+vaitPyr9PXjfNUeN6xQVW0tkuoKGeCorZBq8=</DP><DQ>HOd26ZZQEeuja42wp5E8WcQgSsMEr719i31mrTx+DHW93M7NqqrgTImbEM348/bHQAWXgffc0r3WDlisaVsPJyugDM+RdWKHKshQCi+IlLxl+rKknd8EDlljx50QiWjW7J0BGsPw4/aYiOSj2ZiJ+prjRdExDXPJNks1Y0/JrOE=</DQ><InverseQ>g+JNJBZbKFIY5jWZxCeX7TW25KpR498x+0yGJlzCwy23JbBGDupt2tsBnhXr8KuTxSfMOGWtazQeipI//XyLCvV7BohkL6PhzMKKHwAoM/0xNaqA0d5t9Q32OqEn6I+deu4SF4OwMXkQ96xGp0zLlsWnw3HdG2rVtx5KYARMmGA=</InverseQ><D>YA+CqdT0RXQUyyTacKp4hY3PI58oxI/9L9by52cX6VAgCKMsplDKkwad0vwveLGQ5WqaKIjME88xy+NHiMTAYycECDgs1ZNA+RrHHEDBL9vznQkINPQ0GDB9u7E2vVnttHVoLR31KY9gKe9nLJ9Y2WtF9JN3mVpYZa9NUfXOLVc+zs6ChwqfryfrkgQGHZXNFtwYhG4KuOLkrQy2S4etJEWn+NMbJVYEmy1Sg99BZs4eyi0666B30ofUsx6GwyCa9IXgDm4cJnUDQu0ZEGNU7LX+p9lFym13DkWt4z9TuE3QeOSr7jHEQz1CdE8a4zsqdf3TKP2Fl05+URL35kr/MQ==</D></RSAKeyValue>";
+        var rsa = RSA.Create(2048);
+        rsa.FromXmlString(privateKeyXml);
+
+        options.AddEncryptionKey(new SymmetricSecurityKey(Convert.FromBase64String("DRjd/GnduI3Efzen9V9BvbNUfc/VKgXltV7Kbk9sMkY=")));
+        options.AddSigningKey(new RsaSecurityKey(rsa));
+
+        return options;
+    }
+
 }
-#endif

sandbox/OpenIddict.Sandbox.Maui.Client/OpenIddict.Sandbox.Maui.Client.csproj

@@ -4,6 +4,7 @@
     <OutputType>Exe</OutputType>
     <TargetFrameworks Condition=" '$(SupportsWindowsTargeting)' == 'true' ">net9.0-windows10.0.19041</TargetFrameworks>
     <TargetFrameworks Condition=" '$(SupportsIOSTargeting)' == 'true' ">$(TargetFrameworks);net9.0-ios17.5</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(SupportsAndroidTargeting)' == 'true' ">$(TargetFrameworks);net9.0-android35</TargetFrameworks>
     <TargetFrameworks Condition=" '$(SupportsMacCatalystTargeting)' == 'true' ">$(TargetFrameworks);net9.0-maccatalyst17.5</TargetFrameworks>
     <UseMaui Condition=" '$(TargetFrameworks)' != '' ">true</UseMaui>
     <TargetFrameworks Condition=" '$(TargetFrameworks)' == '' ">net9.0</TargetFrameworks>

sandbox/OpenIddict.Sandbox.Maui.Client/Platforms/Android/AndroidManifest.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+	<application android:allowBackup="true" android:icon="@mipmap/appicon" android:roundIcon="@mipmap/appicon_round" android:supportsRtl="true"></application>
+	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+	<uses-permission android:name="android.permission.INTERNET" />
+</manifest>

sandbox/OpenIddict.Sandbox.Maui.Client/Platforms/Android/MainActivity.cs

@@ -0,0 +1,31 @@
+using Android.App;
+using Android.Content.PM;
+using OpenIddict.Client.SystemIntegration;
+using Intent = Android.Content.Intent;
+
+namespace OpenIddict.Sandbox.Maui.Client
+{
+    [Activity(Theme = "@style/Maui.SplashTheme", MainLauncher = true, 
+        LaunchMode = LaunchMode.SingleTop, 
+        ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation | ConfigChanges.UiMode | ConfigChanges.ScreenLayout | ConfigChanges.SmallestScreenSize | ConfigChanges.Density)]
+    // Intent filter for custom URI scheme
+    [IntentFilter(new[] { Intent.ActionView },
+        Categories = new[] { Intent.CategoryDefault, Intent.CategoryBrowsable },
+        DataScheme = "com.openiddict.sandbox.maui.client")]
+    public class MainActivity : MauiAppCompatActivity
+    {
+
+        protected override async void OnNewIntent(Intent? intent)
+        {
+            base.OnNewIntent(intent);
+
+            // Handle the custom URL scheme
+            if (intent?.Data is not null && 
+                IPlatformApplication.Current?.Services is IServiceProvider provider)
+            {
+                var scheme = intent?.Data?.Scheme;
+                await provider.GetRequiredService<OpenIddictClientSystemIntegrationService>().HandleCustomTabsIntentAsync(intent!);
+            }
+        }
+    }
+}

sandbox/OpenIddict.Sandbox.Maui.Client/Platforms/Android/MainApplication.cs

@@ -0,0 +1,16 @@
+using Android.App;
+using Android.Runtime;
+
+namespace OpenIddict.Sandbox.Maui.Client
+{
+    [Application]
+    public class MainApplication : MauiApplication
+    {
+        public MainApplication(IntPtr handle, JniHandleOwnership ownership)
+            : base(handle, ownership)
+        {
+        }
+
+        protected override MauiApp CreateMauiApp() => MauiProgram.CreateMauiApp();
+    }
+}

sandbox/OpenIddict.Sandbox.Maui.Client/Platforms/Android/Resources/values/colors.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#512BD4</color>
+    <color name="colorPrimaryDark">#2B0B98</color>
+    <color name="colorAccent">#2B0B98</color>
+</resources>

sandbox/OpenIddict.Sandbox.Maui.Client/Program.cs

@@ -1,3 +1,3 @@
-#if !IOS && !MACCATALYST && !WINDOWS
+#if !IOS && !MACCATALYST && !WINDOWS && !ANDROID
 Console.Error.WriteLine("This sample is only supported on iOS, Mac Catalyst and Windows.");
 #endif