ios: restore db (#1063)

* wip

* wip

* wip

* refactor

* clean up

* simplify

* simplify

* refactor

* rename

* rename consts

* refactor

Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com>
This commit is contained in:
JRoberts 2022-09-17 16:41:20 +04:00 committed by GitHub
parent 3351503744
commit 2eca3e789c
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
5 changed files with 107 additions and 12 deletions

View file

@ -663,6 +663,10 @@ func initializeChat(start: Bool, dbKey: String? = nil) throws {
let m = ChatModel.shared
(m.chatDbEncrypted, m.chatDbStatus) = migrateChatDatabase(dbKey)
if m.chatDbStatus != .ok { return }
// If we migrated successfully means previous re-encryption process on database level finished successfully too
if encryptionStartedDefault.get() {
encryptionStartedDefault.set(false)
}
let _ = getChatCtrl(dbKey)
try apiSetFilesFolder(filesFolder: getAppFilesDirectory().path)
try apiSetIncognito(incognito: incognitoGroupDefault.get())

View file

@ -133,7 +133,10 @@ struct DatabaseEncryptionView: View {
progressIndicator = true
Task {
do {
encryptionStartedDefault.set(true)
encryptionStartedAtDefault.set(Date.now)
try await apiStorageEncryption(currentKey: currentKey, newKey: newKey)
encryptionStartedDefault.set(false)
initialRandomDBPassphraseGroupDefault.set(false)
if useKeychain {
if setDatabaseKey(newKey) {

View file

@ -15,6 +15,7 @@ struct DatabaseErrorView: View {
@State private var dbKey = ""
@State private var storedDBKey = getDatabaseKey()
@State private var useKeychain = storeDBPassphraseGroupDefault.get()
@State private var showRestoreDbButton = false
var body: some View {
VStack(alignment: .leading, spacing: 16) {
@ -25,7 +26,6 @@ struct DatabaseErrorView: View {
Text("Database passphrase is different from saved in the keychain.")
databaseKeyField(onSubmit: saveAndRunChat)
saveAndOpenButton()
Spacer()
Text("File: \(dbFile)")
} else {
Text("Encrypted database").font(.title)
@ -37,30 +37,32 @@ struct DatabaseErrorView: View {
databaseKeyField(onSubmit: runChat)
openChatButton()
}
Spacer()
}
case let .error(dbFile, migrationError):
Text("Database error")
.font(.title)
Text("File: \(dbFile)")
Text("Error: \(migrationError)")
Spacer()
case .errorKeychain:
Text("Keychain error")
.font(.title)
Text("Cannot access keychain to save database password")
Spacer()
case let .unknown(json):
Text("Database error")
.font(.title)
Text("Unknown database error: \(json)")
Spacer()
case .ok:
EmptyView()
}
if showRestoreDbButton {
Spacer().frame(height: 10)
Text("The attempt to change database passphrase was not completed.")
restoreDbButton()
}
}
.padding()
.frame(maxHeight: .infinity)
.frame(maxHeight: .infinity, alignment: .topLeading)
.onAppear() { showRestoreDbButton = shouldShowRestoreDbButton() }
}
private func databaseKeyField(onSubmit: @escaping () -> Void) -> some View {
@ -118,6 +120,42 @@ struct DatabaseErrorView: View {
logger.error("initializeChat \(responseError(error))")
}
}
private func shouldShowRestoreDbButton() -> Bool {
if !encryptionStartedDefault.get() { return false }
let startedAt = encryptionStartedAtDefault.get()
// In case there is a small difference between saved encryptionStartedAt time and last modified timestamp on a file
let safeDiffInTime = TimeInterval(10)
return hasBackup(newerThan: startedAt - safeDiffInTime)
}
private func restoreDbButton() -> some View {
Button() {
AlertManager.shared.showAlert(Alert(
title: Text("Restore database backup?"),
message: Text("Please enter the previous password after restoring database backup. This action can not be undone."),
primaryButton: .destructive(Text("Restore")) {
restoreDb()
},
secondaryButton: .cancel()
))
} label: {
Text("Restore database backup").foregroundColor(.red)
}
}
private func restoreDb() {
do {
try restoreBackup()
showRestoreDbButton = false
encryptionStartedDefault.set(false)
} catch {
AlertManager.shared.showAlert(Alert(
title: Text("Restore database error"),
message: Text(error.localizedDescription)
))
}
}
}
struct DatabaseErrorView_Previews: PreviewProvider {

View file

@ -26,6 +26,8 @@ let DEFAULT_CHAT_ARCHIVE_NAME = "chatArchiveName"
let DEFAULT_CHAT_ARCHIVE_TIME = "chatArchiveTime"
let DEFAULT_CHAT_V3_DB_MIGRATION = "chatV3DBMigration"
let DEFAULT_DEVELOPER_TOOLS = "developerTools"
let DEFAULT_ENCRYPTION_STARTED = "encryptionStarted"
let DEFAULT_ENCRYPTION_STARTED_AT = "encryptionStartedAt"
let DEFAULT_ACCENT_COLOR_RED = "accentColorRed"
let DEFAULT_ACCENT_COLOR_GREEN = "accentColorGreen"
let DEFAULT_ACCENT_COLOR_BLUE = "accentColorBlue"
@ -41,6 +43,7 @@ let appDefaults: [String: Any] = [
DEFAULT_EXPERIMENTAL_CALLS: false,
DEFAULT_CHAT_V3_DB_MIGRATION: "offer",
DEFAULT_DEVELOPER_TOOLS: false,
DEFAULT_ENCRYPTION_STARTED: false,
DEFAULT_ACCENT_COLOR_RED: 0.000,
DEFAULT_ACCENT_COLOR_GREEN: 0.533,
DEFAULT_ACCENT_COLOR_BLUE: 1.000,
@ -51,6 +54,10 @@ private var indent: CGFloat = 36
let chatArchiveTimeDefault = DateDefault(defaults: UserDefaults.standard, forKey: DEFAULT_CHAT_ARCHIVE_TIME)
let encryptionStartedDefault = BoolDefault(defaults: UserDefaults.standard, forKey: DEFAULT_ENCRYPTION_STARTED)
let encryptionStartedAtDefault = DateDefault(defaults: UserDefaults.standard, forKey: DEFAULT_ENCRYPTION_STARTED_AT)
func setGroupDefaults() {
privacyAcceptImagesGroupDefault.set(UserDefaults.standard.bool(forKey: DEFAULT_PRIVACY_ACCEPT_IMAGES))
}

View file

@ -17,6 +17,14 @@ public let maxImageSize: Int64 = 236700
public let maxFileSize: Int64 = 8000000
private let CHAT_DB: String = "_chat.db"
private let AGENT_DB: String = "_agent.db"
private let CHAT_DB_BAK: String = "_chat.db.bak"
private let AGENT_DB_BAK: String = "_agent.db.bak"
public func getDocumentsDirectory() -> URL {
FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
}
@ -44,6 +52,41 @@ public func getAppDatabasePath() -> URL {
: getLegacyDatabasePath()
}
func fileModificationDate(_ path: String) -> Date? {
do {
let attr = try FileManager.default.attributesOfItem(atPath: path)
return attr[FileAttributeKey.modificationDate] as? Date
} catch {
return nil
}
}
public func hasBackup(newerThan date: Date) -> Bool {
let dbPath = getAppDatabasePath().path
return hasBackupFile(dbPath + AGENT_DB_BAK, newerThan: date)
&& hasBackupFile(dbPath + CHAT_DB_BAK, newerThan: date)
}
private func hasBackupFile(_ path: String, newerThan date: Date) -> Bool {
let fm = FileManager.default
return fm.fileExists(atPath: path)
&& date <= (fileModificationDate(path) ?? Date.distantPast)
}
public func restoreBackup() throws {
let dbPath = getAppDatabasePath().path
try restoreBackupFile(fromPath: dbPath + AGENT_DB_BAK, toPath: dbPath + AGENT_DB)
try restoreBackupFile(fromPath: dbPath + CHAT_DB_BAK, toPath: dbPath + CHAT_DB)
}
private func restoreBackupFile(fromPath: String, toPath: String) throws {
let fm = FileManager.default
if fm.fileExists(atPath: toPath) {
try fm.removeItem(atPath: toPath)
}
try fm.copyItem(atPath: fromPath, toPath: toPath)
}
public func hasLegacyDatabase() -> Bool {
hasDatabaseAtPath(getLegacyDatabasePath())
}
@ -54,18 +97,18 @@ public func hasDatabase() -> Bool {
func hasDatabaseAtPath(_ dbPath: URL) -> Bool {
let fm = FileManager.default
return fm.isReadableFile(atPath: dbPath.path + "_agent.db") &&
fm.isReadableFile(atPath: dbPath.path + "_chat.db")
return fm.isReadableFile(atPath: dbPath.path + AGENT_DB) &&
fm.isReadableFile(atPath: dbPath.path + CHAT_DB)
}
public func removeLegacyDatabaseAndFiles() -> Bool {
let dbPath = getLegacyDatabasePath()
let appFiles = getDocumentsDirectory().appendingPathComponent("app_files", isDirectory: true)
let fm = FileManager.default
let r1 = nil != (try? fm.removeItem(atPath: dbPath.path + "_agent.db"))
let r2 = nil != (try? fm.removeItem(atPath: dbPath.path + "_chat.db"))
try? fm.removeItem(atPath: dbPath.path + "_agent.db.bak")
try? fm.removeItem(atPath: dbPath.path + "_chat.db.bak")
let r1 = nil != (try? fm.removeItem(atPath: dbPath.path + AGENT_DB))
let r2 = nil != (try? fm.removeItem(atPath: dbPath.path + CHAT_DB))
try? fm.removeItem(atPath: dbPath.path + AGENT_DB_BAK)
try? fm.removeItem(atPath: dbPath.path + CHAT_DB_BAK)
try? fm.removeItem(at: appFiles)
return r1 && r2
}