685 lines
27 KiB
C#
685 lines
27 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Windows.Input;
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using Bit.App.Abstractions;
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using Bit.App.Lists.ItemViewModels.CustomFields;
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using Bit.App.Resources;
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using Bit.App.Utilities;
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using Bit.Core;
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using Bit.Core.Abstractions;
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using Bit.Core.Enums;
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using Bit.Core.Exceptions;
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using Bit.Core.Models.View;
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using Bit.Core.Utilities;
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using Xamarin.CommunityToolkit.ObjectModel;
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using Xamarin.Forms;
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namespace Bit.App.Pages
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{
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public class CipherDetailsPageViewModel : BaseCipherViewModel, IPasswordPromptable
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{
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private readonly ICipherService _cipherService;
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private readonly IStateService _stateService;
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private readonly IAuditService _auditService;
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private readonly ITotpService _totpService;
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private readonly IMessagingService _messagingService;
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private readonly IEventService _eventService;
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private readonly IPasswordRepromptService _passwordRepromptService;
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private readonly ILocalizeService _localizeService;
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private readonly ICustomFieldItemFactory _customFieldItemFactory;
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private readonly IClipboardService _clipboardService;
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private List<ICustomFieldItemViewModel> _fields;
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private bool _canAccessPremium;
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private bool _showPassword;
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private bool _showCardNumber;
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private bool _showCardCode;
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private string _totpCode;
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private string _totpCodeFormatted;
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private string _totpSec;
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private double _totpInterval = Constants.TotpDefaultTimer;
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private bool _totpLow;
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private string _previousCipherId;
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private byte[] _attachmentData;
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private string _attachmentFilename;
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private bool _passwordReprompted;
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private TotpHelper _totpTickHelper;
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private CancellationTokenSource _totpTickCancellationToken;
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private Task _totpTickTask;
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public CipherDetailsPageViewModel()
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{
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_cipherService = ServiceContainer.Resolve<ICipherService>("cipherService");
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_stateService = ServiceContainer.Resolve<IStateService>("stateService");
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_auditService = ServiceContainer.Resolve<IAuditService>("auditService");
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_totpService = ServiceContainer.Resolve<ITotpService>("totpService");
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_messagingService = ServiceContainer.Resolve<IMessagingService>("messagingService");
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_eventService = ServiceContainer.Resolve<IEventService>("eventService");
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_passwordRepromptService = ServiceContainer.Resolve<IPasswordRepromptService>("passwordRepromptService");
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_localizeService = ServiceContainer.Resolve<ILocalizeService>("localizeService");
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_customFieldItemFactory = ServiceContainer.Resolve<ICustomFieldItemFactory>("customFieldItemFactory");
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_clipboardService = ServiceContainer.Resolve<IClipboardService>("clipboardService");
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CopyCommand = new AsyncCommand<string>((id) => CopyAsync(id, null), onException: ex => _logger.Exception(ex), allowsMultipleExecutions: false);
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CopyUriCommand = new AsyncCommand<LoginUriView>(uriView => CopyAsync("LoginUri", uriView.Uri), onException: ex => _logger.Exception(ex), allowsMultipleExecutions: false);
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CopyFieldCommand = new AsyncCommand<FieldView>(field => CopyAsync(field.Type == FieldType.Hidden ? "H_FieldValue" : "FieldValue", field.Value), onException: ex => _logger.Exception(ex), allowsMultipleExecutions: false);
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LaunchUriCommand = new Command<LoginUriView>(LaunchUri);
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TogglePasswordCommand = new Command(TogglePassword);
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ToggleCardNumberCommand = new Command(ToggleCardNumber);
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ToggleCardCodeCommand = new Command(ToggleCardCode);
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DownloadAttachmentCommand = new AsyncCommand<AttachmentView>(DownloadAttachmentAsync, allowsMultipleExecutions: false);
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PageTitle = AppResources.ViewItem;
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}
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public ICommand CopyCommand { get; set; }
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public ICommand CopyUriCommand { get; set; }
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public ICommand CopyFieldCommand { get; set; }
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public Command LaunchUriCommand { get; set; }
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public Command TogglePasswordCommand { get; set; }
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public Command ToggleCardNumberCommand { get; set; }
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public Command ToggleCardCodeCommand { get; set; }
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public AsyncCommand<AttachmentView> DownloadAttachmentCommand { get; set; }
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public string CipherId { get; set; }
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protected override string[] AdditionalPropertiesToRaiseOnCipherChanged => new string[]
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{
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nameof(IsLogin),
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nameof(IsIdentity),
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nameof(IsCard),
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nameof(IsSecureNote),
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nameof(ShowUris),
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nameof(ShowAttachments),
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nameof(ShowTotp),
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nameof(ColoredPassword),
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nameof(UpdatedText),
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nameof(PasswordUpdatedText),
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nameof(PasswordHistoryText),
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nameof(ShowIdentityAddress),
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nameof(IsDeleted),
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nameof(CanEdit),
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nameof(ShowUpgradePremiumTotpText)
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};
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public List<ICustomFieldItemViewModel> Fields
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{
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get => _fields;
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set => SetProperty(ref _fields, value);
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}
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public bool CanAccessPremium
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{
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get => _canAccessPremium;
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set => SetProperty(ref _canAccessPremium, value);
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}
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public bool ShowPassword
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{
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get => _showPassword;
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set => SetProperty(ref _showPassword, value,
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additionalPropertyNames: new string[]
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{
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nameof(ShowPasswordIcon),
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nameof(PasswordVisibilityAccessibilityText)
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});
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}
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public bool ShowCardNumber
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{
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get => _showCardNumber;
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set => SetProperty(ref _showCardNumber, value,
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additionalPropertyNames: new string[]
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{
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nameof(ShowCardNumberIcon)
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});
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}
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public bool ShowCardCode
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{
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get => _showCardCode;
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set => SetProperty(ref _showCardCode, value,
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additionalPropertyNames: new string[]
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{
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nameof(ShowCardCodeIcon)
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});
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}
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public bool IsLogin => Cipher?.Type == Core.Enums.CipherType.Login;
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public bool IsIdentity => Cipher?.Type == Core.Enums.CipherType.Identity;
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public bool IsCard => Cipher?.Type == Core.Enums.CipherType.Card;
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public bool IsSecureNote => Cipher?.Type == Core.Enums.CipherType.SecureNote;
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public FormattedString ColoredPassword => GeneratedValueFormatter.Format(Cipher.Login.Password);
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public FormattedString UpdatedText
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{
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get
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{
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var fs = new FormattedString();
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fs.Spans.Add(new Span
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{
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Text = string.Format("{0}:", AppResources.DateUpdated),
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FontAttributes = FontAttributes.Bold
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});
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fs.Spans.Add(new Span
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{
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Text = string.Format(" {0} {1}",
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_localizeService.GetLocaleShortDate(Cipher.RevisionDate.ToLocalTime()),
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_localizeService.GetLocaleShortTime(Cipher.RevisionDate.ToLocalTime()))
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});
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return fs;
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}
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}
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public FormattedString PasswordUpdatedText
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{
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get
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{
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var fs = new FormattedString();
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fs.Spans.Add(new Span
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{
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Text = string.Format("{0}:", AppResources.DatePasswordUpdated),
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FontAttributes = FontAttributes.Bold
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});
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fs.Spans.Add(new Span
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{
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Text = string.Format(" {0} {1}",
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_localizeService.GetLocaleShortDate(Cipher.PasswordRevisionDisplayDate?.ToLocalTime()),
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_localizeService.GetLocaleShortTime(Cipher.PasswordRevisionDisplayDate?.ToLocalTime()))
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});
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return fs;
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}
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}
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public FormattedString PasswordHistoryText
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{
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get
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{
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var fs = new FormattedString();
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fs.Spans.Add(new Span
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{
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Text = string.Format("{0}:", AppResources.PasswordHistory),
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FontAttributes = FontAttributes.Bold
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});
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fs.Spans.Add(new Span
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{
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Text = string.Format(" {0}", Cipher.PasswordHistory.Count.ToString()),
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TextColor = ThemeManager.GetResourceColor("PrimaryColor")
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});
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return fs;
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}
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}
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public bool ShowUpgradePremiumTotpText => !CanAccessPremium && !Cipher.OrganizationUseTotp && ShowTotp;
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public bool ShowUris => IsLogin && Cipher.Login.HasUris;
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public bool ShowIdentityAddress => IsIdentity && (
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!string.IsNullOrWhiteSpace(Cipher.Identity.Address1) ||
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!string.IsNullOrWhiteSpace(Cipher.Identity.City) ||
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!string.IsNullOrWhiteSpace(Cipher.Identity.Country));
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public bool ShowAttachments => Cipher.HasAttachments && (CanAccessPremium || Cipher.OrganizationId != null);
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public bool ShowTotp => IsLogin && !string.IsNullOrWhiteSpace(Cipher.Login.Totp);
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public string ShowPasswordIcon => ShowPassword ? BitwardenIcons.EyeSlash : BitwardenIcons.Eye;
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public string ShowCardNumberIcon => ShowCardNumber ? BitwardenIcons.EyeSlash : BitwardenIcons.Eye;
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public string ShowCardCodeIcon => ShowCardCode ? BitwardenIcons.EyeSlash : BitwardenIcons.Eye;
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public string PasswordVisibilityAccessibilityText => ShowPassword ? AppResources.PasswordIsVisibleTapToHide : AppResources.PasswordIsNotVisibleTapToShow;
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public string TotpCodeFormatted
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{
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get => ShowUpgradePremiumTotpText ? string.Empty : _totpCodeFormatted;
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set => SetProperty(ref _totpCodeFormatted, value,
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additionalPropertyNames: new string[]
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{
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nameof(ShowTotp)
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});
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}
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public string TotpSec
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{
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get => _totpSec;
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set => SetProperty(ref _totpSec, value,
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additionalPropertyNames: new string[]
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{
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nameof(TotpProgress)
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});
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}
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public bool TotpLow
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{
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get => _totpLow;
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set
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{
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SetProperty(ref _totpLow, value);
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Page.Resources["textTotp"] = ThemeManager.Resources()[value ? "text-danger" : "text-default"];
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}
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}
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public double TotpProgress => string.IsNullOrEmpty(TotpSec) ? 0 : double.Parse(TotpSec) * 100 / _totpInterval;
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public bool IsDeleted => Cipher.IsDeleted;
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public bool CanEdit => !Cipher.IsDeleted;
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public async Task<bool> LoadAsync(Action finishedLoadingAction = null)
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{
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var cipher = await _cipherService.GetAsync(CipherId);
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if (cipher == null)
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{
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finishedLoadingAction?.Invoke();
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return false;
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}
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Cipher = await cipher.DecryptAsync();
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CanAccessPremium = await _stateService.CanAccessPremiumAsync();
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Fields = Cipher.Fields?
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.Select(f => _customFieldItemFactory.CreateCustomFieldItem(f, false, Cipher, this, CopyFieldCommand, null))
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.ToList();
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if (Cipher.Type == Core.Enums.CipherType.Login && !string.IsNullOrWhiteSpace(Cipher.Login.Totp) &&
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(Cipher.OrganizationUseTotp || CanAccessPremium))
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{
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_totpTickHelper = new TotpHelper(Cipher);
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_totpTickCancellationToken?.Cancel();
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_totpInterval = _totpTickHelper.Interval;
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_totpTickCancellationToken = new CancellationTokenSource();
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_totpTickTask = new TimerTask(_logger, StartCiphersTotpTick, _totpTickCancellationToken).RunPeriodic();
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}
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if (_previousCipherId != CipherId)
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{
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var task = _eventService.CollectAsync(Core.Enums.EventType.Cipher_ClientViewed, CipherId);
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}
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_previousCipherId = CipherId;
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finishedLoadingAction?.Invoke();
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return true;
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}
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private async void StartCiphersTotpTick()
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{
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try
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{
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await _totpTickHelper.GenerateNewTotpValues();
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TotpSec = _totpTickHelper.TotpSec;
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TotpCodeFormatted = _totpTickHelper.TotpCodeFormatted;
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_totpInterval = _totpTickHelper.Interval;
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}
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catch (Exception ex)
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{
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_logger.Exception(ex);
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}
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}
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public async Task StopCiphersTotpTick()
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{
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_totpTickCancellationToken?.Cancel();
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if (_totpTickTask != null)
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{
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await _totpTickTask;
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}
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}
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public async void TogglePassword()
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{
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if (!await PromptPasswordAsync())
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{
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return;
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}
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ShowPassword = !ShowPassword;
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if (ShowPassword)
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{
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var task = _eventService.CollectAsync(Core.Enums.EventType.Cipher_ClientToggledPasswordVisible, CipherId);
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}
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}
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public async void ToggleCardNumber()
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{
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if (!await PromptPasswordAsync())
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{
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return;
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}
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ShowCardNumber = !ShowCardNumber;
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if (ShowCardNumber)
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{
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var task = _eventService.CollectAsync(
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Core.Enums.EventType.Cipher_ClientToggledCardNumberVisible, CipherId);
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}
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}
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public async void ToggleCardCode()
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{
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if (!await PromptPasswordAsync())
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{
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return;
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}
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ShowCardCode = !ShowCardCode;
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if (ShowCardCode)
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{
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var task = _eventService.CollectAsync(
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Core.Enums.EventType.Cipher_ClientToggledCardCodeVisible, CipherId);
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}
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}
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public async Task<bool> DeleteAsync()
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{
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if (Xamarin.Essentials.Connectivity.NetworkAccess == Xamarin.Essentials.NetworkAccess.None)
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{
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await _platformUtilsService.ShowDialogAsync(AppResources.InternetConnectionRequiredMessage,
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AppResources.InternetConnectionRequiredTitle);
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return false;
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}
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var confirmed = await _platformUtilsService.ShowDialogAsync(
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Cipher.IsDeleted ? AppResources.DoYouReallyWantToPermanentlyDeleteCipher : AppResources.DoYouReallyWantToSoftDeleteCipher,
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null, AppResources.Yes, AppResources.Cancel);
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if (!confirmed)
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{
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return false;
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}
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try
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{
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await _deviceActionService.ShowLoadingAsync(Cipher.IsDeleted ? AppResources.Deleting : AppResources.SoftDeleting);
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if (Cipher.IsDeleted)
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{
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await _cipherService.DeleteWithServerAsync(Cipher.Id);
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}
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else
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{
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await _cipherService.SoftDeleteWithServerAsync(Cipher.Id);
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}
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await _deviceActionService.HideLoadingAsync();
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_platformUtilsService.ShowToast("success", null,
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Cipher.IsDeleted ? AppResources.ItemDeleted : AppResources.ItemSoftDeleted);
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_messagingService.Send(Cipher.IsDeleted ? "deletedCipher" : "softDeletedCipher", Cipher);
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return true;
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}
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catch (ApiException e)
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{
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await _deviceActionService.HideLoadingAsync();
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if (e?.Error != null)
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{
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await _platformUtilsService.ShowDialogAsync(e.Error.GetSingleMessage(),
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AppResources.AnErrorHasOccurred);
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}
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}
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return false;
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}
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public async Task<bool> RestoreAsync()
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{
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if (!IsDeleted)
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{
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return false;
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}
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if (Xamarin.Essentials.Connectivity.NetworkAccess == Xamarin.Essentials.NetworkAccess.None)
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{
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await _platformUtilsService.ShowDialogAsync(AppResources.InternetConnectionRequiredMessage,
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AppResources.InternetConnectionRequiredTitle);
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return false;
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}
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var confirmed = await _platformUtilsService.ShowDialogAsync(AppResources.DoYouReallyWantToRestoreCipher,
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null, AppResources.Yes, AppResources.Cancel);
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if (!confirmed)
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{
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return false;
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}
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try
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{
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await _deviceActionService.ShowLoadingAsync(AppResources.Restoring);
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await _cipherService.RestoreWithServerAsync(Cipher.Id);
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await _deviceActionService.HideLoadingAsync();
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_platformUtilsService.ShowToast("success", null, AppResources.ItemRestored);
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_messagingService.Send("restoredCipher", Cipher);
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return true;
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}
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catch (ApiException e)
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{
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await _deviceActionService.HideLoadingAsync();
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if (e?.Error != null)
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{
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await _platformUtilsService.ShowDialogAsync(e.Error.GetSingleMessage(),
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AppResources.AnErrorHasOccurred);
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}
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}
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return false;
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}
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private async Task TotpUpdateCodeAsync()
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{
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if (Cipher == null || Cipher.Type != Core.Enums.CipherType.Login || Cipher.Login.Totp == null)
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{
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return;
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}
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_totpCode = await _totpService.GetCodeAsync(Cipher.Login.Totp);
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if (_totpCode != null)
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{
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if (_totpCode.Length > 4)
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{
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var half = (int)Math.Floor(_totpCode.Length / 2M);
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TotpCodeFormatted = string.Format("{0} {1}", _totpCode.Substring(0, half),
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_totpCode.Substring(half));
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}
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else
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{
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TotpCodeFormatted = _totpCode;
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}
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}
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else
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{
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TotpCodeFormatted = null;
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}
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}
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private async Task TotpTickAsync(int intervalSeconds)
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{
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var epoc = CoreHelpers.EpocUtcNow() / 1000;
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var mod = epoc % intervalSeconds;
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var totpSec = intervalSeconds - mod;
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TotpSec = totpSec.ToString();
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TotpLow = totpSec < 7;
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if (mod == 0)
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{
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await TotpUpdateCodeAsync();
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}
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}
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private async Task DownloadAttachmentAsync(AttachmentView attachment)
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{
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try
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{
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if (Xamarin.Essentials.Connectivity.NetworkAccess == Xamarin.Essentials.NetworkAccess.None)
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{
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await _platformUtilsService.ShowDialogAsync(AppResources.InternetConnectionRequiredMessage,
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AppResources.InternetConnectionRequiredTitle);
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return;
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}
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if (Cipher.OrganizationId == null && !CanAccessPremium)
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{
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await _platformUtilsService.ShowDialogAsync(AppResources.PremiumRequired);
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return;
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}
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if (attachment.FileSize >= 10485760) // 10 MB
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{
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var confirmed = await _platformUtilsService.ShowDialogAsync(
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string.Format(AppResources.AttachmentLargeWarning, attachment.SizeName), null,
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AppResources.Yes, AppResources.No);
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if (!confirmed)
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{
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return;
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}
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}
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var canOpenFile = true;
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if (!_fileService.CanOpenFile(attachment.FileName))
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{
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if (Device.RuntimePlatform == Device.iOS)
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{
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// iOS is currently hardcoded to always return CanOpenFile == true, but should it ever return false
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// for any reason we want to be sure to catch it here.
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await _platformUtilsService.ShowDialogAsync(AppResources.UnableToOpenFile);
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return;
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}
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canOpenFile = false;
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}
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if (!await PromptPasswordAsync())
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{
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return;
|
|
}
|
|
|
|
await _deviceActionService.ShowLoadingAsync(AppResources.Downloading);
|
|
var data = await _cipherService.DownloadAndDecryptAttachmentAsync(Cipher.Id, attachment, Cipher.OrganizationId);
|
|
await _deviceActionService.HideLoadingAsync();
|
|
if (data == null)
|
|
{
|
|
await _platformUtilsService.ShowDialogAsync(AppResources.UnableToDownloadFile);
|
|
return;
|
|
}
|
|
|
|
if (Device.RuntimePlatform == Device.Android)
|
|
{
|
|
if (canOpenFile)
|
|
{
|
|
// We can open this attachment directly, so give the user the option to open or save
|
|
PromptOpenOrSave(data, attachment);
|
|
}
|
|
else
|
|
{
|
|
// We can't open this attachment so go directly to save
|
|
SaveAttachment(data, attachment);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
OpenAttachment(data, attachment);
|
|
}
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
_logger.Exception(ex);
|
|
await _deviceActionService.HideLoadingAsync();
|
|
await _platformUtilsService.ShowDialogAsync(AppResources.AnErrorHasOccurred);
|
|
}
|
|
}
|
|
|
|
public async void PromptOpenOrSave(byte[] data, AttachmentView attachment)
|
|
{
|
|
var selection = await Page.DisplayActionSheet(attachment.FileName, AppResources.Cancel, null,
|
|
AppResources.Open, AppResources.Save);
|
|
if (selection == AppResources.Open)
|
|
{
|
|
OpenAttachment(data, attachment);
|
|
}
|
|
else if (selection == AppResources.Save)
|
|
{
|
|
SaveAttachment(data, attachment);
|
|
}
|
|
}
|
|
|
|
public async void OpenAttachment(byte[] data, AttachmentView attachment)
|
|
{
|
|
if (!_fileService.OpenFile(data, attachment.Id, attachment.FileName))
|
|
{
|
|
await _platformUtilsService.ShowDialogAsync(AppResources.UnableToOpenFile);
|
|
return;
|
|
}
|
|
}
|
|
|
|
public async void SaveAttachment(byte[] data, AttachmentView attachment)
|
|
{
|
|
_attachmentData = data;
|
|
_attachmentFilename = attachment.FileName;
|
|
if (!_fileService.SaveFile(_attachmentData, null, _attachmentFilename, null))
|
|
{
|
|
ClearAttachmentData();
|
|
await _platformUtilsService.ShowDialogAsync(AppResources.UnableToSaveAttachment);
|
|
}
|
|
}
|
|
|
|
public async void SaveFileSelected(string contentUri, string filename)
|
|
{
|
|
if (_fileService.SaveFile(_attachmentData, null, filename ?? _attachmentFilename, contentUri))
|
|
{
|
|
ClearAttachmentData();
|
|
_platformUtilsService.ShowToast("success", null, AppResources.SaveAttachmentSuccess);
|
|
return;
|
|
}
|
|
|
|
ClearAttachmentData();
|
|
await _platformUtilsService.ShowDialogAsync(AppResources.UnableToSaveAttachment);
|
|
}
|
|
|
|
private void ClearAttachmentData()
|
|
{
|
|
_attachmentData = null;
|
|
_attachmentFilename = null;
|
|
}
|
|
|
|
private async Task CopyAsync(string id, string text = null)
|
|
{
|
|
if (_passwordRepromptService.ProtectedFields.Contains(id) && !await PromptPasswordAsync())
|
|
{
|
|
return;
|
|
}
|
|
|
|
string name = null;
|
|
if (id == "LoginUsername")
|
|
{
|
|
text = Cipher.Login.Username;
|
|
name = AppResources.Username;
|
|
}
|
|
else if (id == "LoginPassword")
|
|
{
|
|
text = Cipher.Login.Password;
|
|
name = AppResources.Password;
|
|
}
|
|
else if (id == "LoginTotp")
|
|
{
|
|
text = TotpCodeFormatted.Replace(" ", string.Empty);
|
|
name = AppResources.VerificationCodeTotp;
|
|
}
|
|
else if (id == "LoginUri")
|
|
{
|
|
name = AppResources.URI;
|
|
}
|
|
else if (id == "FieldValue" || id == "H_FieldValue")
|
|
{
|
|
name = AppResources.Value;
|
|
}
|
|
else if (id == "CardNumber")
|
|
{
|
|
text = Cipher.Card.Number;
|
|
name = AppResources.Number;
|
|
}
|
|
else if (id == "CardCode")
|
|
{
|
|
text = Cipher.Card.Code;
|
|
name = AppResources.SecurityCode;
|
|
}
|
|
|
|
if (text != null)
|
|
{
|
|
await _clipboardService.CopyTextAsync(text);
|
|
if (!string.IsNullOrWhiteSpace(name))
|
|
{
|
|
_platformUtilsService.ShowToastForCopiedValue(name);
|
|
}
|
|
if (id == "LoginPassword")
|
|
{
|
|
await _eventService.CollectAsync(Core.Enums.EventType.Cipher_ClientCopiedPassword, CipherId);
|
|
}
|
|
else if (id == "CardCode")
|
|
{
|
|
await _eventService.CollectAsync(Core.Enums.EventType.Cipher_ClientCopiedCardCode, CipherId);
|
|
}
|
|
else if (id == "H_FieldValue")
|
|
{
|
|
await _eventService.CollectAsync(Core.Enums.EventType.Cipher_ClientCopiedHiddenField, CipherId);
|
|
}
|
|
}
|
|
}
|
|
|
|
private void LaunchUri(LoginUriView uri)
|
|
{
|
|
if (uri.CanLaunch && (Page as BaseContentPage).DoOnce())
|
|
{
|
|
_platformUtilsService.LaunchUri(uri.LaunchUri);
|
|
}
|
|
}
|
|
|
|
public async Task<bool> PromptPasswordAsync()
|
|
{
|
|
if (Cipher.Reprompt == CipherRepromptType.None || _passwordReprompted)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
return _passwordReprompted = await _passwordRepromptService.ShowPasswordPromptAsync();
|
|
}
|
|
}
|
|
}
|