Bitwarden-app-android-iphon.../src/Core/Services/StateMigrationService.cs

507 lines
27 KiB
C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Bit.Core.Abstractions;
using Bit.Core.Enums;
using Bit.Core.Models.Data;
using Bit.Core.Models.Domain;
using Bit.Core.Utilities;
namespace Bit.Core.Services
{
public class StateMigrationService : IStateMigrationService
{
private const int StateVersion = 4;
private readonly IStorageService _preferencesStorageService;
private readonly IStorageService _liteDbStorageService;
private readonly IStorageService _secureStorageService;
private enum Storage
{
LiteDb,
Prefs,
Secure,
}
public StateMigrationService(IStorageService liteDbStorageService, IStorageService preferenceStorageService,
IStorageService secureStorageService)
{
_liteDbStorageService = liteDbStorageService;
_preferencesStorageService = preferenceStorageService;
_secureStorageService = secureStorageService;
}
public async Task<bool> NeedsMigration()
{
var lastVersion = await GetLastStateVersionAsync();
if (lastVersion == 0)
{
// fresh install, set current/latest version for availability going forward
lastVersion = StateVersion;
await SetLastStateVersionAsync(lastVersion);
}
return lastVersion < StateVersion;
}
public async Task Migrate()
{
var lastVersion = await GetLastStateVersionAsync();
switch (lastVersion)
{
case 1:
await MigrateFrom1To2Async();
goto case 2;
case 2:
await MigrateFrom2To3Async();
goto case 3;
case 3:
await MigrateFrom3To4Async();
break;
}
}
#region v1 to v2 Migration
private class V1Keys
{
internal const string EnvironmentUrlsKey = "environmentUrls";
}
private async Task MigrateFrom1To2Async()
{
// move environmentUrls from LiteDB to prefs
var environmentUrls = await GetValueAsync<EnvironmentUrlData>(Storage.LiteDb, V1Keys.EnvironmentUrlsKey);
if (environmentUrls == null)
{
throw new Exception("'environmentUrls' must be in LiteDB during migration from 1 to 2");
}
await SetValueAsync(Storage.Prefs, V2Keys.EnvironmentUrlsKey, environmentUrls);
// Update stored version
await SetLastStateVersionAsync(2);
// Remove old data
await RemoveValueAsync(Storage.LiteDb, V1Keys.EnvironmentUrlsKey);
}
#endregion
#region v2 to v3 Migration
private class V2Keys
{
internal const string SyncOnRefreshKey = "syncOnRefresh";
internal const string VaultTimeoutKey = "lockOption";
internal const string VaultTimeoutActionKey = "vaultTimeoutAction";
internal const string LastActiveTimeKey = "lastActiveTime";
internal const string BiometricUnlockKey = "fingerprintUnlock";
internal const string ProtectedPin = "protectedPin";
internal const string PinProtectedKey = "pinProtectedKey";
internal const string DefaultUriMatch = "defaultUriMatch";
internal const string DisableAutoTotpCopyKey = "disableAutoTotpCopy";
internal const string EnvironmentUrlsKey = "environmentUrls";
internal const string AutofillDisableSavePromptKey = "autofillDisableSavePrompt";
internal const string AutofillBlacklistedUrisKey = "autofillBlacklistedUris";
internal const string DisableFaviconKey = "disableFavicon";
internal const string ThemeKey = "theme";
internal const string ClearClipboardKey = "clearClipboard";
internal const string PreviousPageKey = "previousPage";
internal const string InlineAutofillEnabledKey = "inlineAutofillEnabled";
internal const string InvalidUnlockAttempts = "invalidUnlockAttempts";
internal const string PasswordRepromptAutofillKey = "passwordRepromptAutofillKey";
internal const string PasswordVerifiedAutofillKey = "passwordVerifiedAutofillKey";
internal const string MigratedFromV1 = "migratedFromV1";
internal const string MigratedFromV1AutofillPromptShown = "migratedV1AutofillPromptShown";
internal const string TriedV1Resync = "triedV1Resync";
internal const string Keys_UserId = "userId";
internal const string Keys_UserEmail = "userEmail";
internal const string Keys_Stamp = "securityStamp";
internal const string Keys_Kdf = "kdf";
internal const string Keys_KdfIterations = "kdfIterations";
internal const string Keys_EmailVerified = "emailVerified";
internal const string Keys_ForcePasswordReset = "forcePasswordReset";
internal const string Keys_AccessToken = "accessToken";
internal const string Keys_RefreshToken = "refreshToken";
internal const string Keys_LocalData = "ciphersLocalData";
internal const string Keys_NeverDomains = "neverDomains";
internal const string Keys_Key = "key";
internal const string Keys_EncOrgKeys = "encOrgKeys";
internal const string Keys_EncPrivateKey = "encPrivateKey";
internal const string Keys_EncKey = "encKey";
internal const string Keys_KeyHash = "keyHash";
internal const string Keys_UsesKeyConnector = "usesKeyConnector";
internal const string Keys_PassGenOptions = "passwordGenerationOptions";
internal const string Keys_PassGenHistory = "generatedPasswordHistory";
}
private async Task MigrateFrom2To3Async()
{
// build account and state
var userId = await GetValueAsync<string>(Storage.LiteDb, V2Keys.Keys_UserId);
var email = await GetValueAsync<string>(Storage.LiteDb, V2Keys.Keys_UserEmail);
string name = null;
var hasPremiumPersonally = false;
var accessToken = await GetValueAsync<string>(Storage.LiteDb, V2Keys.Keys_AccessToken);
if (!string.IsNullOrWhiteSpace(accessToken))
{
var tokenService = ServiceContainer.Resolve<ITokenService>("tokenService");
await tokenService.SetAccessTokenAsync(accessToken, true);
if (string.IsNullOrWhiteSpace(userId))
{
userId = tokenService.GetUserId();
}
if (string.IsNullOrWhiteSpace(email))
{
email = tokenService.GetEmail();
}
name = tokenService.GetName();
hasPremiumPersonally = tokenService.GetPremium();
}
if (string.IsNullOrWhiteSpace(userId))
{
throw new Exception("'userId' must be in LiteDB during migration from 2 to 3");
}
var kdfType = await GetValueAsync<int?>(Storage.LiteDb, V2Keys.Keys_Kdf);
var kdfIterations = await GetValueAsync<int?>(Storage.LiteDb, V2Keys.Keys_KdfIterations);
var stamp = await GetValueAsync<string>(Storage.LiteDb, V2Keys.Keys_Stamp);
var emailVerified = await GetValueAsync<bool?>(Storage.LiteDb, V2Keys.Keys_EmailVerified);
var refreshToken = await GetValueAsync<string>(Storage.LiteDb, V2Keys.Keys_RefreshToken);
var account = new Account(
new Account.AccountProfile()
{
UserId = userId,
Email = email,
Name = name,
Stamp = stamp,
KdfType = (KdfType?)kdfType,
KdfIterations = kdfIterations,
EmailVerified = emailVerified,
HasPremiumPersonally = hasPremiumPersonally,
},
new Account.AccountTokens()
{
AccessToken = accessToken,
RefreshToken = refreshToken,
}
);
var environmentUrls = await GetValueAsync<EnvironmentUrlData>(Storage.Prefs, V2Keys.EnvironmentUrlsKey);
var vaultTimeout = await GetValueAsync<int?>(Storage.Prefs, V2Keys.VaultTimeoutKey);
var vaultTimeoutAction = await GetValueAsync<string>(Storage.Prefs, V2Keys.VaultTimeoutActionKey);
account.Settings = new Account.AccountSettings()
{
EnvironmentUrls = environmentUrls,
VaultTimeout = vaultTimeout,
VaultTimeoutAction =
vaultTimeoutAction == "logout" ? VaultTimeoutAction.Logout : VaultTimeoutAction.Lock
};
var state = new State { Accounts = new Dictionary<string, Account> { [userId] = account } };
state.ActiveUserId = userId;
await SetValueAsync(Storage.LiteDb, Constants.StateKey, state);
// migrate user-specific non-state data
var syncOnRefresh = await GetValueAsync<bool?>(Storage.LiteDb, V2Keys.SyncOnRefreshKey);
await SetValueAsync(Storage.LiteDb, V3Keys.SyncOnRefreshKey(userId), syncOnRefresh);
var lastActiveTime = await GetValueAsync<long?>(Storage.Prefs, V2Keys.LastActiveTimeKey);
await SetValueAsync(Storage.LiteDb, V3Keys.LastActiveTimeKey(userId), lastActiveTime);
var biometricUnlock = await GetValueAsync<bool?>(Storage.LiteDb, V2Keys.BiometricUnlockKey);
await SetValueAsync(Storage.LiteDb, V3Keys.BiometricUnlockKey(userId), biometricUnlock);
var protectedPin = await GetValueAsync<string>(Storage.LiteDb, V2Keys.ProtectedPin);
await SetValueAsync(Storage.LiteDb, V3Keys.ProtectedPinKey(userId), protectedPin);
var pinProtectedKey = await GetValueAsync<string>(Storage.LiteDb, V2Keys.PinProtectedKey);
await SetValueAsync(Storage.LiteDb, V3Keys.PinProtectedKey(userId), pinProtectedKey);
var defaultUriMatch = await GetValueAsync<int?>(Storage.Prefs, V2Keys.DefaultUriMatch);
await SetValueAsync(Storage.LiteDb, V3Keys.DefaultUriMatchKey(userId), defaultUriMatch);
var disableAutoTotpCopy = await GetValueAsync<bool?>(Storage.Prefs, V2Keys.DisableAutoTotpCopyKey);
await SetValueAsync(Storage.LiteDb, V3Keys.DisableAutoTotpCopyKey(userId), disableAutoTotpCopy);
var autofillDisableSavePrompt =
await GetValueAsync<bool?>(Storage.Prefs, V2Keys.AutofillDisableSavePromptKey);
await SetValueAsync(Storage.LiteDb, V3Keys.AutofillDisableSavePromptKey(userId),
autofillDisableSavePrompt);
var autofillBlacklistedUris =
await GetValueAsync<List<string>>(Storage.LiteDb, V2Keys.AutofillBlacklistedUrisKey);
await SetValueAsync(Storage.LiteDb, V3Keys.AutofillBlacklistedUrisKey(userId), autofillBlacklistedUris);
var disableFavicon = await GetValueAsync<bool?>(Storage.Prefs, V2Keys.DisableFaviconKey);
await SetValueAsync(Storage.LiteDb, V3Keys.DisableFaviconKey(userId), disableFavicon);
var theme = await GetValueAsync<string>(Storage.Prefs, V2Keys.ThemeKey);
await SetValueAsync(Storage.LiteDb, V3Keys.ThemeKey(userId), theme);
var clearClipboard = await GetValueAsync<int?>(Storage.Prefs, V2Keys.ClearClipboardKey);
await SetValueAsync(Storage.LiteDb, V3Keys.ClearClipboardKey(userId), clearClipboard);
var previousPage = await GetValueAsync<PreviousPageInfo>(Storage.LiteDb, V2Keys.PreviousPageKey);
await SetValueAsync(Storage.LiteDb, V3Keys.PreviousPageKey(userId), previousPage);
var inlineAutofillEnabled = await GetValueAsync<bool?>(Storage.Prefs, V2Keys.InlineAutofillEnabledKey);
await SetValueAsync(Storage.LiteDb, V3Keys.InlineAutofillEnabledKey(userId), inlineAutofillEnabled);
var invalidUnlockAttempts = await GetValueAsync<int?>(Storage.Prefs, V2Keys.InvalidUnlockAttempts);
await SetValueAsync(Storage.LiteDb, V3Keys.InvalidUnlockAttemptsKey(userId), invalidUnlockAttempts);
var passwordRepromptAutofill =
await GetValueAsync<bool?>(Storage.LiteDb, V2Keys.PasswordRepromptAutofillKey);
await SetValueAsync(Storage.LiteDb, V3Keys.PasswordRepromptAutofillKey(userId),
passwordRepromptAutofill);
var passwordVerifiedAutofill =
await GetValueAsync<bool?>(Storage.LiteDb, V2Keys.PasswordVerifiedAutofillKey);
await SetValueAsync(Storage.LiteDb, V3Keys.PasswordVerifiedAutofillKey(userId),
passwordVerifiedAutofill);
var cipherLocalData = await GetValueAsync<Dictionary<string, Dictionary<string, object>>>(Storage.LiteDb,
V2Keys.Keys_LocalData);
await SetValueAsync(Storage.LiteDb, V3Keys.LocalDataKey(userId), cipherLocalData);
var neverDomains = await GetValueAsync<HashSet<string>>(Storage.LiteDb, V2Keys.Keys_NeverDomains);
await SetValueAsync(Storage.LiteDb, V3Keys.NeverDomainsKey(userId), neverDomains);
var key = await GetValueAsync<string>(Storage.Secure, V2Keys.Keys_Key);
await SetValueAsync(Storage.Secure, V3Keys.KeyKey(userId), key);
var encOrgKeys = await GetValueAsync<Dictionary<string, string>>(Storage.LiteDb, V2Keys.Keys_EncOrgKeys);
await SetValueAsync(Storage.LiteDb, V3Keys.EncOrgKeysKey(userId), encOrgKeys);
var encPrivateKey = await GetValueAsync<string>(Storage.LiteDb, V2Keys.Keys_EncPrivateKey);
await SetValueAsync(Storage.LiteDb, V3Keys.EncPrivateKeyKey(userId), encPrivateKey);
var encKey = await GetValueAsync<string>(Storage.LiteDb, V2Keys.Keys_EncKey);
await SetValueAsync(Storage.LiteDb, V3Keys.EncKeyKey(userId), encKey);
var keyHash = await GetValueAsync<string>(Storage.LiteDb, V2Keys.Keys_KeyHash);
await SetValueAsync(Storage.LiteDb, V3Keys.KeyHashKey(userId), keyHash);
var usesKeyConnector = await GetValueAsync<bool?>(Storage.LiteDb, V2Keys.Keys_UsesKeyConnector);
await SetValueAsync(Storage.LiteDb, V3Keys.UsesKeyConnectorKey(userId), usesKeyConnector);
var passGenOptions =
await GetValueAsync<PasswordGenerationOptions>(Storage.LiteDb, V2Keys.Keys_PassGenOptions);
await SetValueAsync(Storage.LiteDb, V3Keys.PassGenOptionsKey(userId), passGenOptions);
var passGenHistory =
await GetValueAsync<List<GeneratedPasswordHistory>>(Storage.LiteDb, V2Keys.Keys_PassGenHistory);
await SetValueAsync(Storage.LiteDb, V3Keys.PassGenHistoryKey(userId), passGenHistory);
// migrate global non-state data
await SetValueAsync(Storage.Prefs, V3Keys.PreAuthEnvironmentUrlsKey, environmentUrls);
// Update stored version
await SetLastStateVersionAsync(3);
// Remove old data
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_UserId);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_UserEmail);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_AccessToken);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_RefreshToken);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_Kdf);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_KdfIterations);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_Stamp);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_EmailVerified);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_ForcePasswordReset);
await RemoveValueAsync(Storage.Prefs, V2Keys.EnvironmentUrlsKey);
await RemoveValueAsync(Storage.LiteDb, V2Keys.PinProtectedKey);
await RemoveValueAsync(Storage.Prefs, V2Keys.VaultTimeoutKey);
await RemoveValueAsync(Storage.Prefs, V2Keys.VaultTimeoutActionKey);
await RemoveValueAsync(Storage.LiteDb, V2Keys.SyncOnRefreshKey);
await RemoveValueAsync(Storage.Prefs, V2Keys.LastActiveTimeKey);
await RemoveValueAsync(Storage.LiteDb, V2Keys.BiometricUnlockKey);
await RemoveValueAsync(Storage.LiteDb, V2Keys.ProtectedPin);
await RemoveValueAsync(Storage.Prefs, V2Keys.DefaultUriMatch);
await RemoveValueAsync(Storage.Prefs, V2Keys.DisableAutoTotpCopyKey);
await RemoveValueAsync(Storage.Prefs, V2Keys.AutofillDisableSavePromptKey);
await RemoveValueAsync(Storage.LiteDb, V2Keys.AutofillBlacklistedUrisKey);
await RemoveValueAsync(Storage.Prefs, V2Keys.DisableFaviconKey);
await RemoveValueAsync(Storage.Prefs, V2Keys.ThemeKey);
await RemoveValueAsync(Storage.Prefs, V2Keys.ClearClipboardKey);
await RemoveValueAsync(Storage.LiteDb, V2Keys.PreviousPageKey);
await RemoveValueAsync(Storage.Prefs, V2Keys.InlineAutofillEnabledKey);
await RemoveValueAsync(Storage.Prefs, V2Keys.InvalidUnlockAttempts);
await RemoveValueAsync(Storage.LiteDb, V2Keys.PasswordRepromptAutofillKey);
await RemoveValueAsync(Storage.LiteDb, V2Keys.PasswordVerifiedAutofillKey);
await RemoveValueAsync(Storage.Prefs, V2Keys.MigratedFromV1);
await RemoveValueAsync(Storage.Prefs, V2Keys.MigratedFromV1AutofillPromptShown);
await RemoveValueAsync(Storage.Prefs, V2Keys.TriedV1Resync);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_LocalData);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_NeverDomains);
await RemoveValueAsync(Storage.Secure, V2Keys.Keys_Key);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_EncOrgKeys);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_EncPrivateKey);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_EncKey);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_KeyHash);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_UsesKeyConnector);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_PassGenOptions);
await RemoveValueAsync(Storage.LiteDb, V2Keys.Keys_PassGenHistory);
}
#endregion
#region v3 to v4 Migration
private class V3Keys
{
internal const string PreAuthEnvironmentUrlsKey = "preAuthEnvironmentUrls";
internal static string LocalDataKey(string userId) => $"ciphersLocalData_{userId}";
internal static string NeverDomainsKey(string userId) => $"neverDomains_{userId}";
internal static string KeyKey(string userId) => $"key_{userId}";
internal static string EncOrgKeysKey(string userId) => $"encOrgKeys_{userId}";
internal static string EncPrivateKeyKey(string userId) => $"encPrivateKey_{userId}";
internal static string EncKeyKey(string userId) => $"encKey_{userId}";
internal static string KeyHashKey(string userId) => $"keyHash_{userId}";
internal static string PinProtectedKey(string userId) => $"pinProtectedKey_{userId}";
internal static string PassGenOptionsKey(string userId) => $"passwordGenerationOptions_{userId}";
internal static string PassGenHistoryKey(string userId) => $"generatedPasswordHistory_{userId}";
internal static string LastActiveTimeKey(string userId) => $"lastActiveTime_{userId}";
internal static string InvalidUnlockAttemptsKey(string userId) => $"invalidUnlockAttempts_{userId}";
internal static string InlineAutofillEnabledKey(string userId) => $"inlineAutofillEnabled_{userId}";
internal static string AutofillDisableSavePromptKey(string userId) => $"autofillDisableSavePrompt_{userId}";
internal static string AutofillBlacklistedUrisKey(string userId) => $"autofillBlacklistedUris_{userId}";
internal static string ClearClipboardKey(string userId) => $"clearClipboard_{userId}";
internal static string SyncOnRefreshKey(string userId) => $"syncOnRefresh_{userId}";
internal static string DefaultUriMatchKey(string userId) => $"defaultUriMatch_{userId}";
internal static string DisableAutoTotpCopyKey(string userId) => $"disableAutoTotpCopy_{userId}";
internal static string PreviousPageKey(string userId) => $"previousPage_{userId}";
internal static string PasswordRepromptAutofillKey(string userId) =>
$"passwordRepromptAutofillKey_{userId}";
internal static string PasswordVerifiedAutofillKey(string userId) =>
$"passwordVerifiedAutofillKey_{userId}";
internal static string UsesKeyConnectorKey(string userId) => $"usesKeyConnector_{userId}";
internal static string ProtectedPinKey(string userId) => $"protectedPin_{userId}";
internal static string BiometricUnlockKey(string userId) => $"biometricUnlock_{userId}";
internal static string ThemeKey(string userId) => $"theme_{userId}";
internal static string AutoDarkThemeKey(string userId) => $"autoDarkTheme_{userId}";
internal static string DisableFaviconKey(string userId) => $"disableFavicon_{userId}";
}
private async Task MigrateFrom3To4Async()
{
var state = await GetValueAsync<State>(Storage.LiteDb, Constants.StateKey);
if (state?.Accounts is null)
{
// Update stored version
await SetLastStateVersionAsync(4);
return;
}
string firstUserId = null;
// move values from state to standalone values in LiteDB
foreach (var account in state.Accounts.Where(a => a.Value?.Profile?.UserId != null))
{
var userId = account.Value.Profile.UserId;
if (firstUserId == null)
{
firstUserId = userId;
}
var vaultTimeout = account.Value.Settings?.VaultTimeout;
await SetValueAsync(Storage.LiteDb, V4Keys.VaultTimeoutKey(userId), vaultTimeout);
var vaultTimeoutAction = account.Value.Settings?.VaultTimeoutAction;
await SetValueAsync(Storage.LiteDb, V4Keys.VaultTimeoutActionKey(userId), vaultTimeoutAction);
var screenCaptureAllowed = account.Value.Settings?.ScreenCaptureAllowed;
await SetValueAsync(Storage.LiteDb, V4Keys.ScreenCaptureAllowedKey(userId), screenCaptureAllowed);
}
// use values from first userId to apply globals
if (firstUserId != null)
{
var theme = await GetValueAsync<int?>(Storage.LiteDb, V3Keys.ThemeKey(firstUserId));
await SetValueAsync(Storage.LiteDb, V4Keys.ThemeKey, theme);
var autoDarkTheme = await GetValueAsync<int?>(Storage.LiteDb, V3Keys.AutoDarkThemeKey(firstUserId));
await SetValueAsync(Storage.LiteDb, V4Keys.AutoDarkThemeKey, autoDarkTheme);
var disableFavicon = await GetValueAsync<bool?>(Storage.LiteDb, V3Keys.DisableFaviconKey(firstUserId));
await SetValueAsync(Storage.LiteDb, V4Keys.DisableFaviconKey, disableFavicon);
}
// Update stored version
await SetLastStateVersionAsync(4);
// Remove old data
foreach (var account in state.Accounts)
{
var userId = account.Value?.Profile?.UserId;
if (userId != null)
{
await RemoveValueAsync(Storage.LiteDb, V3Keys.ThemeKey(userId));
await RemoveValueAsync(Storage.LiteDb, V3Keys.AutoDarkThemeKey(userId));
await RemoveValueAsync(Storage.LiteDb, V3Keys.DisableFaviconKey(userId));
}
}
// Removal of old state data will happen organically as state is rebuilt in app
}
private class V4Keys
{
internal static string VaultTimeoutKey(string userId) => $"vaultTimeout_{userId}";
internal static string VaultTimeoutActionKey(string userId) => $"vaultTimeoutAction_{userId}";
internal static string ScreenCaptureAllowedKey(string userId) => $"screenCaptureAllowed_{userId}";
internal const string ThemeKey = "theme";
internal const string AutoDarkThemeKey = "autoDarkTheme";
internal const string DisableFaviconKey = "disableFavicon";
}
#endregion
// Helpers
private async Task<int> GetLastStateVersionAsync()
{
var lastVersion = await GetValueAsync<int?>(Storage.Prefs, Constants.StateVersionKey);
if (lastVersion != null)
{
return lastVersion.Value;
}
// check for v1 state
var v1EnvUrls = await GetValueAsync<EnvironmentUrlData>(Storage.LiteDb, V1Keys.EnvironmentUrlsKey);
if (v1EnvUrls != null)
{
// environmentUrls still in LiteDB (never migrated to prefs), this is v1
return 1;
}
// check for v2 state
var v2UserId = await GetValueAsync<string>(Storage.LiteDb, V2Keys.Keys_UserId);
if (v2UserId != null)
{
// standalone userId still exists (never moved to Account object), this is v2
return 2;
}
// this is a fresh install
return 0;
}
private async Task SetLastStateVersionAsync(int value)
{
await SetValueAsync(Storage.Prefs, Constants.StateVersionKey, value);
}
private async Task<T> GetValueAsync<T>(Storage storage, string key)
{
var value = await GetStorageService(storage).GetAsync<T>(key);
return value;
}
private async Task SetValueAsync<T>(Storage storage, string key, T value)
{
if (value == null)
{
await RemoveValueAsync(storage, key);
return;
}
await GetStorageService(storage).SaveAsync(key, value);
}
private async Task RemoveValueAsync(Storage storage, string key)
{
await GetStorageService(storage).RemoveAsync(key);
}
private IStorageService GetStorageService(Storage storage)
{
switch (storage)
{
case Storage.Secure:
return _secureStorageService;
case Storage.Prefs:
return _preferencesStorageService;
default:
return _liteDbStorageService;
}
}
}
}