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PM-3349 Implemented HybridWebViewHandler for Android which enables 2nd factor auth flows

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Ensured CustomTabbedPageHandler had it's DisconnectHandler called
Some minor code upgrades of older obsolete Xamarin Forms code.
This commit is contained in:
Dinis Vieira 2023-10-07 17:25:29 +01:00
parent 1dcd3a3daa
commit c92cd90a97
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GPG key ID: 9389160FF6C295F3
9 changed files with 159 additions and 40 deletions
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25
src/App/Handlers/HybridWebViewHandler.cs Normal file
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@ -0,0 +1,25 @@
#if IOS || MACCATALYST
using PlatformView = WebKit.WKWebView;
#elif ANDROID
using PlatformView = Android.Webkit.WebView;
#elif (NETSTANDARD || !PLATFORM) || (NET6_0_OR_GREATER && !IOS && !ANDROID)
using PlatformView = System.Object;
#endif
using Bit.App.Controls;
using Microsoft.Maui.Handlers;
namespace Bit.App.Handlers
{
public partial class HybridWebViewHandler
{
public static PropertyMapper<HybridWebView, HybridWebViewHandler> PropertyMapper = new PropertyMapper<HybridWebView, HybridWebViewHandler>(ViewHandler.ViewMapper)
{
[nameof(HybridWebView.Uri)] = MapUri
};
public HybridWebViewHandler() : base(PropertyMapper)
{
}
}
}

5
src/App/MauiProgram.cs
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@ -1,4 +1,4 @@
namespace Bit.App
namespace Bit.App
{
public class MauiProgram
{
@ -28,7 +28,8 @@ namespace Bit.App
Bit.App.Handlers.TimePickerHandlerMappings.Setup();
Bit.App.Handlers.ButtonHandlerMappings.Setup();
handlers.AddHandler(typeof(TabbedPage), typeof(Bit.App.Handlers.CustomTabbedPageHandler));
handlers.AddHandler(typeof(Bit.App.Pages.TabsPage), typeof(Bit.App.Handlers.CustomTabbedPageHandler));
handlers.AddHandler(typeof(Bit.App.Controls.HybridWebView), typeof(Bit.App.Handlers.HybridWebViewHandler));
#else
iOS.Core.Utilities.iOSCoreHelpers.ConfigureMAUIHandlers(handlers);
#endif

2
src/App/Platforms/Android/Handlers/CustomTabbedPageHandler.cs
View file

@ -1,5 +1,4 @@
using AndroidX.AppCompat.View.Menu;
using AndroidX.Navigation.UI;
using Bit.Core.Abstractions;
using Bit.Core.Utilities;
using Google.Android.Material.BottomNavigation;
@ -95,6 +94,7 @@ namespace Bit.App.Handlers
}
}
//Currently the Disconnect Handler needs to be manually called from the App: https://github.com/dotnet/maui/issues/3604
protected override void DisconnectHandler(global::Android.Views.View platformView)
{
if(_bottomNavigationViewGroup != null)

96
src/App/Platforms/Android/Handlers/HybridWebViewHandler.cs Normal file
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@ -0,0 +1,96 @@
using Bit.App.Controls;
using Java.Interop;
using JetBrains.Annotations;
using Microsoft.Maui.Handlers;
using AWebkit = Android.Webkit;
namespace Bit.App.Handlers
{
public partial class HybridWebViewHandler : ViewHandler<HybridWebView, AWebkit.WebView>
{
private const string JSFunction = "function invokeCSharpAction(data){jsBridge.invokeAction(data);}";
public HybridWebViewHandler([NotNull] IPropertyMapper mapper, CommandMapper commandMapper = null) : base(mapper, commandMapper)
{
}
protected override AWebkit.WebView CreatePlatformView()
{
var context = MauiContext?.Context ?? throw new InvalidOperationException($"Context cannot be null here");
var webView = new AWebkit.WebView(context);
webView.Settings.JavaScriptEnabled = true;
webView.SetWebViewClient(new JSWebViewClient(string.Format("javascript: {0}", JSFunction)));
return webView;
}
public static void MapUri(HybridWebViewHandler handler, HybridWebView view)
{
if (view != null && view.Uri != null)
{
handler?.PlatformView?.LoadUrl(view.Uri);
}
}
protected override void ConnectHandler(AWebkit.WebView platformView)
{
platformView?.AddJavascriptInterface(new JSBridge(this), "jsBridge");
platformView?.LoadUrl(VirtualView?.Uri);
base.ConnectHandler(platformView);
}
//Currently the Disconnect Handler needs to be manually called from the App: https://github.com/dotnet/maui/issues/3604
protected override void DisconnectHandler(AWebkit.WebView platformView)
{
platformView?.RemoveJavascriptInterface("jsBridge");
platformView?.Dispose();
VirtualView?.Cleanup();
base.DisconnectHandler(platformView);
}
internal void InvokeActionOnVirtual(string data)
{
VirtualView?.InvokeAction(data);
}
}
public class JSBridge : Java.Lang.Object
{
private readonly WeakReference<HybridWebViewHandler> _hybridWebViewRenderer;
public JSBridge(HybridWebViewHandler hybridRenderer)
{
_hybridWebViewRenderer = new WeakReference<HybridWebViewHandler>(hybridRenderer);
}
[AWebkit.JavascriptInterface]
[Export("invokeAction")]
public void InvokeAction(string data)
{
if (_hybridWebViewRenderer != null &&_hybridWebViewRenderer.TryGetTarget(out HybridWebViewHandler hybridRenderer))
{
hybridRenderer?.InvokeActionOnVirtual(data);
}
}
}
public class JSWebViewClient : AWebkit.WebViewClient
{
private readonly string _javascript;
public JSWebViewClient(string javascript)
{
_javascript = javascript;
}
public override void OnPageFinished(AWebkit.WebView view, string url)
{
base.OnPageFinished(view, url);
if (view != null)
{
view.EvaluateJavascript(_javascript, null);
}
}
}
}

6
src/Core/Controls/HybridWebView.cs
View file

@ -1,8 +1,4 @@
using System;
using Microsoft.Maui.Controls;
using Microsoft.Maui;
namespace Bit.App.Controls
namespace Bit.App.Controls
{
public class HybridWebView : View
{

1
src/Core/Pages/Accounts/TwoFactorPage.xaml
View file

@ -7,6 +7,7 @@
xmlns:controls="clr-namespace:Bit.App.Controls"
xmlns:u="clr-namespace:Bit.App.Utilities"
x:DataType="pages:TwoFactorPageViewModel"
Unloaded="TwoFactorPage_OnUnloaded"
Title="{Binding PageTitle}">
<ContentPage.BindingContext>

34
src/Core/Pages/Accounts/TwoFactorPage.xaml.cs
View file

@ -1,13 +1,8 @@
using System;
using System.Threading.Tasks;
using Bit.App.Controls;
using Bit.App.Controls;
using Bit.App.Models;
using Bit.App.Utilities;
using Bit.Core.Abstractions;
using Bit.Core.Services;
using Bit.Core.Utilities;
using Microsoft.Maui.Controls;
using Microsoft.Maui;
namespace Bit.App.Pages
{
@ -33,24 +28,23 @@ namespace Bit.App.Pages
_vm.Page = this;
_vm.AuthingWithSso = authingWithSso ?? false;
_vm.StartSetPasswordAction = () =>
Device.BeginInvokeOnMainThread(async () => await StartSetPasswordAsync());
MainThread.BeginInvokeOnMainThread(async () => await StartSetPasswordAsync());
_vm.TwoFactorAuthSuccessAction = () =>
Device.BeginInvokeOnMainThread(async () => await TwoFactorAuthSuccessToMainAsync());
MainThread.BeginInvokeOnMainThread(async () => await TwoFactorAuthSuccessToMainAsync());
_vm.LockAction = () =>
Device.BeginInvokeOnMainThread(TwoFactorAuthSuccessWithSSOLocked);
MainThread.BeginInvokeOnMainThread(TwoFactorAuthSuccessWithSSOLocked);
_vm.UpdateTempPasswordAction =
() => Device.BeginInvokeOnMainThread(async () => await UpdateTempPasswordAsync());
() => MainThread.BeginInvokeOnMainThread(async () => await UpdateTempPasswordAsync());
_vm.StartDeviceApprovalOptionsAction =
() => Device.BeginInvokeOnMainThread(async () => await StartDeviceApprovalOptionsAsync());
() => MainThread.BeginInvokeOnMainThread(async () => await StartDeviceApprovalOptionsAsync());
_vm.CloseAction = async () => await Navigation.PopModalAsync();
DuoWebView = _duoWebView;
// TODO Xamarin.Forms.Device.RuntimePlatform is no longer supported. Use Microsoft.Maui.Devices.DeviceInfo.Platform instead. For more details see https://learn.microsoft.com/en-us/dotnet/maui/migration/forms-projects#device-changes
if (Device.RuntimePlatform == Device.Android)
if (DeviceInfo.Platform == DevicePlatform.Android)
{
ToolbarItems.Remove(_cancelItem);
}
// TODO Xamarin.Forms.Device.RuntimePlatform is no longer supported. Use Microsoft.Maui.Devices.DeviceInfo.Platform instead. For more details see https://learn.microsoft.com/en-us/dotnet/maui/migration/forms-projects#device-changes
if (Device.RuntimePlatform == Device.iOS)
if (DeviceInfo.Platform == DevicePlatform.iOS)
{
ToolbarItems.Add(_moreItem);
}
@ -62,7 +56,7 @@ namespace Bit.App.Pages
public HybridWebView DuoWebView { get; set; }
protected async override void OnAppearing()
protected override async void OnAppearing()
{
base.OnAppearing();
_broadcasterService.Subscribe(nameof(TwoFactorPage), (message) =>
@ -73,7 +67,7 @@ namespace Bit.App.Pages
if (_vm.YubikeyMethod && !string.IsNullOrWhiteSpace(token) &&
token.Length == 44 && !token.Contains(" "))
{
Device.BeginInvokeOnMainThread(async () =>
MainThread.BeginInvokeOnMainThread(async () =>
{
_vm.Token = token;
await _vm.SubmitAsync();
@ -117,6 +111,12 @@ namespace Bit.App.Pages
_broadcasterService.Unsubscribe(nameof(TwoFactorPage));
}
}
private void TwoFactorPage_OnUnloaded(object sender, EventArgs e)
{
_duoWebView?.Handler?.DisconnectHandler();
}
protected override bool OnBackButtonPressed()
{
if (_vm.YubikeyMethod)

21
src/Core/Pages/BaseContentPage.cs
View file

@ -1,15 +1,10 @@
using System;
using System.Threading.Tasks;
using Bit.App.Abstractions;
using Bit.App.Abstractions;
using Bit.App.Controls;
using Bit.App.Utilities;
using Bit.Core.Abstractions;
using Bit.Core.Utilities;
using Microsoft.Maui.Controls.PlatformConfiguration;
using Microsoft.Maui.Controls.PlatformConfiguration.iOSSpecific;
using Microsoft.Maui.ApplicationModel.Communication;
using Microsoft.Maui.Controls;
using Microsoft.Maui;
namespace Bit.App.Pages
{
@ -23,8 +18,7 @@ namespace Bit.App.Pages
public BaseContentPage()
{
// TODO Xamarin.Forms.Device.RuntimePlatform is no longer supported. Use Microsoft.Maui.Devices.DeviceInfo.Platform instead. For more details see https://learn.microsoft.com/en-us/dotnet/maui/migration/forms-projects#device-changes
if (Device.RuntimePlatform == Device.iOS)
if (DeviceInfo.Platform == DevicePlatform.iOS)
{
On<iOS>().SetUseSafeArea(true);
On<iOS>().SetModalPresentationStyle(UIModalPresentationStyle.FullScreen);
@ -35,7 +29,7 @@ namespace Bit.App.Pages
public bool IsThemeDirty { get; set; }
protected async override void OnAppearing()
protected override async void OnAppearing()
{
base.OnAppearing();
@ -70,7 +64,7 @@ namespace Bit.App.Pages
var indicator = new ActivityIndicator
{
IsRunning = true,
VerticalOptions = LayoutOptions.CenterAndExpand,
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center,
Color = ThemeManager.GetResourceColor("PrimaryColor"),
};
@ -102,8 +96,7 @@ namespace Bit.App.Pages
}
}
}
// TODO Xamarin.Forms.Device.RuntimePlatform is no longer supported. Use Microsoft.Maui.Devices.DeviceInfo.Platform instead. For more details see https://learn.microsoft.com/en-us/dotnet/maui/migration/forms-projects#device-changes
if (Device.RuntimePlatform == Device.iOS)
if (DeviceInfo.Platform == DevicePlatform.iOS)
{
await DoWorkAsync();
return;
@ -111,7 +104,7 @@ namespace Bit.App.Pages
await Task.Run(async () =>
{
await Task.Delay(fromModal ? ShowModalAnimationDelay : ShowPageAnimationDelay);
Device.BeginInvokeOnMainThread(async () => await DoWorkAsync());
MainThread.BeginInvokeOnMainThread(async () => await DoWorkAsync());
});
}
@ -120,7 +113,7 @@ namespace Bit.App.Pages
Task.Run(async () =>
{
await Task.Delay(ShowModalAnimationDelay);
Device.BeginInvokeOnMainThread(() => input.Focus());
MainThread.BeginInvokeOnMainThread(() => input.Focus());
});
}

7
src/Core/Pages/TabsPage.cs
View file

@ -56,6 +56,8 @@ namespace Bit.App.Pages
};
Children.Add(settingsPage);
Unloaded += OnUnloaded;
if (DeviceInfo.Platform == DevicePlatform.Android)
{
Microsoft.Maui.Controls.PlatformConfiguration.AndroidSpecific.TabbedPage.SetToolbarPlacement(this,
@ -109,6 +111,11 @@ namespace Bit.App.Pages
_broadcasterService.Unsubscribe(nameof(TabsPage));
}
private void OnUnloaded(object sender, EventArgs e)
{
Handler?.DisconnectHandler();
}
public void ResetToVaultPage()
{
CurrentPage = _groupingsPage;