Share-to-Send for Android (#1343)

* Android implementation

* remove iOS attempt for now

src/Android/MainActivity.cs

@@ -30,6 +30,16 @@ namespace Bit.Droid
         ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation |
                                ConfigChanges.Keyboard | ConfigChanges.KeyboardHidden |
                                ConfigChanges.Navigation)]
+    [IntentFilter(
+        new[] { Intent.ActionSend },
+        Categories = new[] { Intent.CategoryDefault },
+        DataMimeTypes = new[]
+        {
+            @"application/*",
+            @"image/*",
+            @"video/*",
+            @"text/*"
+        })]
     [Register("com.x8bit.bitwarden.MainActivity")]
     public class MainActivity : Xamarin.Forms.Platform.Android.FormsAppCompatActivity
     {
@@ -169,7 +179,7 @@ namespace Bit.Droid
                     _appOptions.GeneratorTile = true;
                 }
             }
-            if (intent.GetBooleanExtra("myVaultTile", false))
+            else if (intent.GetBooleanExtra("myVaultTile", false))
             {
                 _messagingService.Send("popAllAndGoToTabMyVault");
                 if (_appOptions != null)
@@ -177,6 +187,14 @@ namespace Bit.Droid
                     _appOptions.MyVaultTile = true;
                 }
             }
+            else if (intent.Action == Intent.ActionSend && intent.Type != null)
+            {
+                if (_appOptions != null)
+                {
+                    _appOptions.CreateSend = GetCreateSendRequest(intent);
+                }
+                _messagingService.Send("popAllAndGoToTabSend");
+            }
             else
             {
                 ParseYubiKey(intent.DataString);
@@ -298,7 +316,8 @@ namespace Bit.Droid
                 Uri = Intent.GetStringExtra("uri") ?? Intent.GetStringExtra("autofillFrameworkUri"),
                 MyVaultTile = Intent.GetBooleanExtra("myVaultTile", false),
                 GeneratorTile = Intent.GetBooleanExtra("generatorTile", false),
-                FromAutofillFramework = Intent.GetBooleanExtra("autofillFramework", false)
+                FromAutofillFramework = Intent.GetBooleanExtra("autofillFramework", false),
+                CreateSend = GetCreateSendRequest(Intent)
             };
             var fillType = Intent.GetIntExtra("autofillFrameworkFillType", 0);
             if (fillType > 0)
@@ -320,6 +339,37 @@ namespace Bit.Droid
             return options;
         }
 
+        private Tuple<SendType, string, byte[], string> GetCreateSendRequest(Intent intent)
+        {
+            if (intent.Action == Intent.ActionSend && intent.Type != null)
+            {
+                var type = intent.Type;
+                if (type.Contains("text/"))
+                {
+                    var subject = intent.GetStringExtra(Intent.ExtraSubject);
+                    var text = intent.GetStringExtra(Intent.ExtraText);
+                    return new Tuple<SendType, string, byte[], string>(SendType.Text, subject, null, text);
+                }
+                else
+                {
+                    var data = intent.ClipData?.GetItemAt(0);
+                    var uri = data?.Uri;
+                    var filename = AndroidHelpers.GetFileName(ApplicationContext, uri);
+                    try
+                    {
+                        using (var stream = ContentResolver.OpenInputStream(uri))
+                        using (var memoryStream = new MemoryStream())
+                        {
+                            stream.CopyTo(memoryStream);
+                            return new Tuple<SendType, string, byte[], string>(SendType.File, filename, memoryStream.ToArray(), null);
+                        }
+                    }
+                    catch (Java.IO.FileNotFoundException) { }
+                }
+            }
+            return null;
+        }
+
         private void ParseYubiKey(string data)
         {
             if (data == null)

src/Android/Services/DeviceActionService.cs

@@ -760,6 +760,17 @@ namespace Bit.Droid.Services
             // ref: https://developer.android.com/reference/android/os/SystemClock#elapsedRealtime()
             return SystemClock.ElapsedRealtime();
         }
+        
+        public void CloseMainApp()
+        {
+            var activity = (MainActivity)CrossCurrentActivity.Current.Activity;
+            if (activity == null)
+            {
+                return;
+            }
+            activity.Finish();
+            _messagingService.Send("finishMainActivity");
+        }
 
         private bool DeleteDir(Java.IO.File dir)
         {

src/App/Abstractions/IDeviceActionService.cs

@@ -44,5 +44,6 @@ namespace Bit.App.Abstractions
         void OpenAutofillSettings();
         bool UsingDarkTheme();
         long GetActiveTime();
+        void CloseMainApp();
     }
 }

src/App/App.xaml.cs

@@ -131,7 +131,8 @@ namespace Bit.App
                     await SetMainPageAsync();
                 }
                 else if (message.Command == "popAllAndGoToTabGenerator" ||
-                    message.Command == "popAllAndGoToTabMyVault")
+                    message.Command == "popAllAndGoToTabMyVault" ||
+                    message.Command == "popAllAndGoToTabSend")
                 {
                     Device.BeginInvokeOnMainThread(async () =>
                     {
@@ -146,11 +147,15 @@ namespace Bit.App
                                 Options.MyVaultTile = false;
                                 tabsPage.ResetToVaultPage();
                             }
-                            else
+                            else if (message.Command == "popAllAndGoToTabGenerator")
                             {
                                 Options.GeneratorTile = false;
                                 tabsPage.ResetToGeneratorPage();
                             }
+                            else if (message.Command == "popAllAndGoToTabSend")
+                            {
+                                tabsPage.ResetToSendPage();
+                            }
                         }
                     });
                 }
@@ -274,6 +279,10 @@ namespace Bit.App
                 {
                     Current.MainPage = new NavigationPage(new AutofillCiphersPage(Options));
                 }
+                else if (Options.CreateSend != null)
+                {
+                    Current.MainPage = new NavigationPage(new SendAddEditPage(Options));
+                }
                 else
                 {
                     Current.MainPage = new TabsPage(Options);

src/App/Models/AppOptions.cs

@@ -1,4 +1,5 @@
-using Bit.Core.Enums;
+using System;
+using Bit.Core.Enums;
 
 namespace Bit.App.Models
 {
@@ -19,6 +20,7 @@ namespace Bit.App.Models
         public string SaveCardExpYear { get; set; }
         public string SaveCardCode { get; set; }
         public bool IosExtension { get; set; }
+        public Tuple<SendType, string, byte[], string> CreateSend { get; set; }
 
         public void SetAllFrom(AppOptions o)
         {
@@ -41,6 +43,7 @@ namespace Bit.App.Models
             SaveCardExpYear = o.SaveCardExpYear;
             SaveCardCode = o.SaveCardCode;
             IosExtension = o.IosExtension;
+            CreateSend = o.CreateSend;
         }
     }
 }

src/App/Pages/Send/SendAddEditPage.xaml

@@ -117,7 +117,7 @@
                         </StackLayout>
                         <StackLayout
                             StyleClass="box-row"
-                            IsVisible="{Binding EditMode, Converter={StaticResource inverseBool}}">
+                            IsVisible="{Binding ShowTypeButtons}">
                             <Label
                                 Text="{u:I18n Type}"
                                 StyleClass="box-label" />
@@ -222,6 +222,7 @@
                                     HorizontalTextAlignment="Center" />
                                 <Button
                                     Text="{u:I18n ChooseFile}"
+                                    IsVisible="{Binding IsAddFromShare, Converter={StaticResource inverseBool}}"
                                     IsEnabled="{Binding SendEnabled}"
                                     StyleClass="box-button-row"
                                     Clicked="ChooseFile_Clicked" />
@@ -234,7 +235,7 @@
                             </StackLayout>
                             <Label
                                 Text="{u:I18n TypeFileInfo}"
-                                IsVisible="{Binding EditMode, Converter={StaticResource inverseBool}}"
+                                IsVisible="{Binding ShowTypeButtons}"
                                 StyleClass="box-footer-label"
                                 Margin="0,5,0,0" />
                         </StackLayout>

src/App/Pages/Send/SendAddEditPage.xaml.cs

@@ -1,5 +1,7 @@
 using System;
 using System.Collections.Generic;
+using System.Threading.Tasks;
+using Bit.App.Models;
 using Bit.App.Resources;
 using Bit.Core.Abstractions;
 using Bit.Core.Enums;
@@ -15,18 +17,21 @@ namespace Bit.App.Pages
     {
         private readonly IBroadcasterService _broadcasterService;
 
+        private AppOptions _appOptions;
         private SendAddEditPageViewModel _vm;
 
         public SendAddEditPage(
+            AppOptions appOptions = null,
             string sendId = null,
             SendType? type = null)
         {
             _broadcasterService = ServiceContainer.Resolve<IBroadcasterService>("broadcasterService");
+            _appOptions = appOptions;
             InitializeComponent();
             _vm = BindingContext as SendAddEditPageViewModel;
             _vm.Page = this;
             _vm.SendId = sendId;
-            _vm.Type = type;
+            _vm.Type = appOptions?.CreateSend?.Item1 ?? type;
             SetActivityIndicator();
             if (Device.RuntimePlatform == Device.Android)
             {
@@ -95,6 +100,7 @@ namespace Bit.App.Pages
                     await Navigation.PopModalAsync();
                     return;
                 }
+                await HandleCreateRequest();
                 if (!_vm.EditMode && string.IsNullOrWhiteSpace(_vm.Send?.Name))
                 {
                     RequestFocus(_nameEntry);
@@ -271,5 +277,33 @@ namespace Bit.App.Pages
                 ToolbarItems.Remove(_shareLink);
             }
         }
+
+        private async Task HandleCreateRequest()
+        {
+            if (_appOptions?.CreateSend == null)
+            {
+                return;
+            }
+
+            _vm.IsAddFromShare = true;
+            
+            var name = _appOptions.CreateSend.Item2;
+            _vm.Send.Name = name;
+            
+            var type = _appOptions.CreateSend.Item1;
+            if (type == SendType.File)
+            {
+                _vm.FileData = _appOptions.CreateSend.Item3;
+                _vm.FileName = name;
+                FileType_Clicked(null, null);
+            }
+            else
+            {
+                var text = _appOptions.CreateSend.Item4;
+                _vm.Send.Text.Text = text;
+                TextType_Clicked(null, null);
+            }
+            _appOptions.CreateSend = null;
+        }
     }
 }

src/App/Pages/Send/SendAddEditPageViewModel.cs

@@ -95,6 +95,7 @@ namespace Bit.App.Pages
         public string NewPassword { get; set; }
         public bool ShareOnSave { get; set; }
         public bool DisableHideEmailControl { get; set; }
+        public bool IsAddFromShare { get; set; }
         public List<KeyValuePair<string, SendType>> TypeOptions { get; }
         public List<KeyValuePair<string, string>> DeletionTypeOptions { get; }
         public List<KeyValuePair<string, string>> ExpirationTypeOptions { get; }
@@ -208,6 +209,7 @@ namespace Bit.App.Pages
             get => _sendOptionsPolicyInEffect;
             set => SetProperty(ref _sendOptionsPolicyInEffect, value);
         }
+        public bool ShowTypeButtons => !EditMode && !IsAddFromShare;
         public bool EditMode => !string.IsNullOrWhiteSpace(SendId);
         public bool IsText => Send?.Type == SendType.Text;
         public bool IsFile => Send?.Type == SendType.File;
@@ -335,7 +337,7 @@ namespace Bit.App.Pages
             {
                 if (!_canAccessPremium)
                 {
-                    await _platformUtilsService.ShowDialogAsync(AppResources.PremiumRequired);
+                    await _platformUtilsService.ShowDialogAsync(AppResources.SendFilePremiumRequired);
                     return false;
                 }
                 if (!EditMode)
@@ -374,10 +376,6 @@ namespace Bit.App.Pages
                 var sendId = await _sendService.SaveWithServerAsync(send, encryptedFileData);
                 await _deviceActionService.HideLoadingAsync();
 
-                _platformUtilsService.ShowToast("success", null,
-                    EditMode ? AppResources.SendUpdated : AppResources.NewSendCreated);
-                await Page.Navigation.PopModalAsync();
-
                 if (Device.RuntimePlatform == Device.Android && IsFile)
                 {
                     // Workaround for https://github.com/xamarin/Xamarin.Forms/issues/5418
@@ -395,7 +393,21 @@ namespace Bit.App.Pages
                         await AppHelpers.ShareSendUrlAsync(savedSendView);
                     }
                 }
+                else
+                {
+                    _platformUtilsService.ShowToast("success", null,
+                    EditMode ? AppResources.SendUpdated : AppResources.NewSendCreated);
+                }
 
+                if (IsAddFromShare && Device.RuntimePlatform == Device.Android)
+                {
+                    _deviceActionService.CloseMainApp();
+                }
+                else
+                {
+                    await Page.Navigation.PopModalAsync();
+                }
+                
                 return true;
             }
             catch (ApiException e)
@@ -432,11 +444,29 @@ namespace Bit.App.Pages
 
         public async Task TypeChangedAsync(SendType type)
         {
+            if (!SendEnabled)
+            {
+                await _platformUtilsService.ShowDialogAsync(AppResources.SendDisabledWarning);
+                if (IsAddFromShare && Device.RuntimePlatform == Device.Android)
+                {
+                    _deviceActionService.CloseMainApp();
+                }
+                else
+                {
+                    await Page.Navigation.PopModalAsync();
+                }
+                return;
+            }
             if (Send != null)
             {
                 if (!EditMode && type == SendType.File && !_canAccessPremium)
                 {
-                    await _platformUtilsService.ShowDialogAsync(AppResources.PremiumRequired);
+                    await _platformUtilsService.ShowDialogAsync(AppResources.SendFilePremiumRequired);
+                    if (IsAddFromShare && Device.RuntimePlatform == Device.Android)
+                    {
+                        _deviceActionService.CloseMainApp();
+                        return;
+                    }
                     type = SendType.Text;
                 }
                 Send.Type = type;

src/App/Pages/Send/SendGroupingsPage/SendGroupingsPage.xaml.cs

@@ -19,10 +19,11 @@ namespace Bit.App.Pages
         private readonly SendGroupingsPageViewModel _vm;
         private readonly string _pageName;
 
+        private AppOptions _appOptions;
         private PreviousPageInfo _previousPage;
 
         public SendGroupingsPage(bool mainPage, SendType? type = null, string pageTitle = null,
-            PreviousPageInfo previousPage = null)
+            AppOptions appOptions = null, PreviousPageInfo previousPage = null)
         {
             _pageName = string.Concat(nameof(GroupingsPage), "_", DateTime.UtcNow.Ticks);
             InitializeComponent();
@@ -35,6 +36,7 @@ namespace Bit.App.Pages
             _vm.Page = this;
             _vm.MainPage = mainPage;
             _vm.Type = type;
+            _appOptions = appOptions;
             _previousPage = previousPage;
             if (pageTitle != null)
             {
@@ -109,8 +111,8 @@ namespace Bit.App.Pages
                     }
                 }
 
-                await ShowPreviousPageAsync();
                 AdjustToolbar();
+                await CheckAddRequest();
             }, _mainContent);
         }
 
@@ -122,6 +124,18 @@ namespace Bit.App.Pages
             _vm.DisableRefreshing();
         }
 
+        private async Task CheckAddRequest()
+        {
+            if (_appOptions?.CreateSend != null)
+            {
+                if (DoOnce())
+                {
+                    var page = new SendAddEditPage(_appOptions);
+                    await Navigation.PushModalAsync(new NavigationPage(page));
+                }
+            }
+        }
+        
         private async void RowSelected(object sender, SelectedItemChangedEventArgs e)
         {
             ((ListView)sender).SelectedItem = null;
@@ -172,28 +186,11 @@ namespace Bit.App.Pages
         {
             if (DoOnce())
             {
-                var page = new SendAddEditPage(null, _vm.Type);
+                var page = new SendAddEditPage(null, null, _vm.Type);
                 await Navigation.PushModalAsync(new NavigationPage(page));
             }
         }
 
-        private async Task ShowPreviousPageAsync()
-        {
-            if (_previousPage == null)
-            {
-                return;
-            }
-            if (_previousPage.Page == "view" && !string.IsNullOrWhiteSpace(_previousPage.SendId))
-            {
-                await Navigation.PushModalAsync(new NavigationPage(new ViewPage(_previousPage.SendId)));
-            }
-            else if (_previousPage.Page == "edit" && !string.IsNullOrWhiteSpace(_previousPage.SendId))
-            {
-                await Navigation.PushModalAsync(new NavigationPage(new AddEditPage(_previousPage.SendId)));
-            }
-            _previousPage = null;
-        }
-        
         private void AdjustToolbar()
         {
             _addItem.IsEnabled = _vm.SendEnabled;

src/App/Pages/Send/SendGroupingsPage/SendGroupingsPageViewModel.cs

@@ -208,7 +208,7 @@ namespace Bit.App.Pages
 
         public async Task SelectSendAsync(SendView send)
         {
-            var page = new SendAddEditPage(send.Id);
+            var page = new SendAddEditPage(null, send.Id);
             await Page.Navigation.PushModalAsync(new NavigationPage(page));
         }
 

src/App/Pages/Send/SendsPageViewModel.cs

@@ -113,7 +113,7 @@ namespace Bit.App.Pages
 
         public async Task SelectSendAsync(SendView send)
         {
-            var page = new SendAddEditPage(send.Id);
+            var page = new SendAddEditPage(null, send.Id);
             await Page.Navigation.PushModalAsync(new NavigationPage(page));
         }
 

src/App/Pages/TabsPage.cs

@@ -20,7 +20,7 @@ namespace Bit.App.Pages
             };
             Children.Add(_groupingsPage);
 
-            _sendGroupingsPage = new NavigationPage(new SendGroupingsPage(true))
+            _sendGroupingsPage = new NavigationPage(new SendGroupingsPage(true, null, null, appOptions))
             {
                 Title = AppResources.Send,
                 IconImageSource = "paper_plane.png",
@@ -60,6 +60,10 @@ namespace Bit.App.Pages
             {
                 appOptions.MyVaultTile = false;
             }
+            else if (appOptions?.CreateSend != null)
+            {
+                ResetToSendPage();
+            }
         }
 
         public void ResetToVaultPage()
@@ -71,6 +75,11 @@ namespace Bit.App.Pages
         {
             CurrentPage = _generatorPage;
         }
+        
+        public void ResetToSendPage()
+        {
+            CurrentPage = _sendGroupingsPage;
+        }
 
         protected async override void OnCurrentPageChanged()
         {

src/App/Resources/AppResources.Designer.cs

@@ -3496,5 +3496,11 @@ namespace Bit.App.Resources {
                 return ResourceManager.GetString("SendOptionsPolicyInEffect", resourceCulture);
             }
         }
+        
+        public static string SendFilePremiumRequired {
+            get {
+                return ResourceManager.GetString("SendFilePremiumRequired", resourceCulture);
+            }
+        }
     }
 }

src/App/Resources/AppResources.resx

@@ -1979,4 +1979,8 @@
     <value>One or more organization policies are affecting your Send options.</value>
     <comment>'Send' is a noun and the name of a feature called 'Bitwarden Send'. It should not be translated.</comment>
   </data>
+  <data name="SendFilePremiumRequired" xml:space="preserve">
+    <value>Free accounts are restricted to sharing text only. A premium membership is required to use files with Send.</value>
+    <comment>'Send' is a noun and the name of a feature called 'Bitwarden Send'. It should not be translated.</comment>
+  </data>
 </root>

src/App/Utilities/AppHelpers.cs

@@ -154,7 +154,7 @@ namespace Bit.App.Utilities
             }
             else if (selection == AppResources.Edit)
             {
-                await page.Navigation.PushModalAsync(new NavigationPage(new SendAddEditPage(send.Id)));
+                await page.Navigation.PushModalAsync(new NavigationPage(new SendAddEditPage(null, send.Id)));
             }
             else if (selection == AppResources.CopyLink)
             {
@@ -409,6 +409,11 @@ namespace Bit.App.Utilities
                     Application.Current.MainPage = new NavigationPage(new AutofillCiphersPage(appOptions));
                     return true;
                 }
+                if (appOptions.CreateSend != null)
+                {
+                    Application.Current.MainPage = new NavigationPage(new SendAddEditPage(appOptions));
+                    return true;
+                }
             }
             return false;
         }

src/iOS.Core/Services/DeviceActionService.cs

@@ -437,6 +437,11 @@ namespace Bit.iOS.Core.Services
             return iOSHelpers.GetSystemUpTimeMilliseconds() ?? DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
         }
 
+        public void CloseMainApp()
+        {
+            throw new NotImplementedException();
+        }
+
         private void ImagePicker_FinishedPickingMedia(object sender, UIImagePickerMediaPickedEventArgs e)
         {
             if (sender is UIImagePickerController picker)