core, iOS: support for self-destruct password

apps/ios/Shared/ContentView.swift

@@ -192,7 +192,7 @@ struct ContentView: View {
     private func justAuthenticate() {
         userAuthorized = false
         let laMode = privacyLocalAuthModeDefault.get()
-        authenticate(reason: NSLocalizedString("Unlock app", comment: "authentication reason")) { laResult in
+        authenticate(reason: NSLocalizedString("Unlock app", comment: "authentication reason"), selfDestruct: true) { laResult in
             logger.debug("authenticate callback: \(String(describing: laResult))")
             switch (laResult) {
             case .success:

apps/ios/Shared/Model/NtfManager.swift

@@ -42,7 +42,7 @@ class NtfManager: NSObject, UNUserNotificationCenterDelegate, ObservableObject {
             changeActiveUser(userId, viewPwd: nil)
         }
         if content.categoryIdentifier == ntfCategoryContactRequest && action == ntfActionAcceptContact,
-            let chatId = content.userInfo["chatId"] as? String {
+           let chatId = content.userInfo["chatId"] as? String {
             if case let .contactRequest(contactRequest) = chatModel.getChat(chatId)?.chatInfo {
                 Task { await acceptContactRequest(contactRequest) }
             } else {
@@ -107,8 +107,8 @@ class NtfManager: NSObject, UNUserNotificationCenterDelegate, ObservableObject {
                     // in another chat
                     return recent ? [.banner, .list] : [.sound, .banner, .list]
                 }
-            // this notification is deliverd from the notifications server
-            // when the app is in foreground it does not need to be shown
+                // this notification is deliverd from the notifications server
+                // when the app is in foreground it does not need to be shown
             case ntfCategoryCheckMessage: return []
             case ntfCategoryCallInvitation: return []
             default: return [.sound, .banner, .list]
@@ -247,8 +247,12 @@ class NtfManager: NSObject, UNUserNotificationCenterDelegate, ObservableObject {
         }
     }
 
-    func removeNotifications(_ ids : [String]){
-        UNUserNotificationCenter.current().removeDeliveredNotifications(withIdentifiers: ids)
-        UNUserNotificationCenter.current().removePendingNotificationRequests(withIdentifiers: ids)
+    func removeAllNotifications() async {
+        let nc = UNUserNotificationCenter.current()
+        let settings = await nc.notificationSettings()
+        if settings.authorizationStatus == .authorized {
+            nc.removeAllPendingNotificationRequests()
+            nc.removeAllDeliveredNotifications()
+        }
     }
 }

apps/ios/Shared/Model/SimpleXAPI.swift

@@ -125,7 +125,7 @@ func apiGetActiveUser() throws -> User? {
     }
 }
 
-func apiCreateActiveUser(_ p: Profile) throws -> User {
+func apiCreateActiveUser(_ p: Profile?) throws -> User {
     let r = chatSendCmdSync(.createActiveUser(profile: p))
     if case let .activeUser(user) = r { return user }
     throw r

apps/ios/Shared/Views/Database/DatabaseView.swift

@@ -317,10 +317,7 @@ struct DatabaseView: View {
     private func stopChat() {
         Task {
             do {
-                try await apiStopChat()
-                ChatReceiver.shared.stop()
-                await MainActor.run { m.chatRunning = false }
-                appStateGroupDefault.set(.stopped)
+                try await stopChatAsync()
             } catch let error {
                 await MainActor.run {
                     runChat = true
@@ -374,9 +371,7 @@ struct DatabaseView: View {
         progressIndicator = true
         Task {
             do {
-                try await apiDeleteStorage()
-                _ = kcDatabasePassword.remove()
-                storeDBPassphraseGroupDefault.set(true)
+                try await deleteChatAsync()
                 await operationEnded(.chatDeleted)
                 appFilesCountAndSize = directoryFileCountAndSize(getAppFilesDirectory())
             } catch let error {
@@ -468,6 +463,19 @@ struct DatabaseView: View {
     }
 }
 
+func stopChatAsync() async throws {
+    try await apiStopChat()
+    ChatReceiver.shared.stop()
+    await MainActor.run { ChatModel.shared.chatRunning = false }
+    appStateGroupDefault.set(.stopped)
+}
+
+func deleteChatAsync() async throws {
+    try await apiDeleteStorage()
+    _ = kcDatabasePassword.remove()
+    storeDBPassphraseGroupDefault.set(true)
+}
+
 struct DatabaseView_Previews: PreviewProvider {
     static var previews: some View {
         DatabaseView(showSettings: Binding.constant(false), chatItemTTL: .none)

apps/ios/Shared/Views/Helpers/LocalAuthenticationUtils.swift

@@ -30,19 +30,26 @@ struct LocalAuthRequest {
     var title: LocalizedStringKey? // if title is null, reason is shown
     var reason: String
     var password: String
+    var selfDestruct: Bool
     var completed: (LAResult) -> Void
 
-    static var sample = LocalAuthRequest(title: "Enter Passcode", reason: "Authenticate", password: "", completed: { _ in })
+    static var sample = LocalAuthRequest(title: "Enter Passcode", reason: "Authenticate", password: "", selfDestruct: false, completed: { _ in })
 }
 
-func authenticate(title: LocalizedStringKey? = nil, reason: String, completed: @escaping (LAResult) -> Void) {
+func authenticate(title: LocalizedStringKey? = nil, reason: String, selfDestruct: Bool = false, completed: @escaping (LAResult) -> Void) {
     logger.debug("authenticate")
     switch privacyLocalAuthModeDefault.get() {
     case .system: systemAuthenticate(reason, completed)
     case .passcode:
         if let password = kcAppPassword.get() {
             DispatchQueue.main.async {
-                ChatModel.shared.laRequest = LocalAuthRequest(title: title, reason: reason, password: password, completed: completed)
+                ChatModel.shared.laRequest = LocalAuthRequest(
+                    title: title,
+                    reason: reason,
+                    password: password,
+                    selfDestruct: selfDestruct && UserDefaults.standard.bool(forKey: DEFAULT_LA_SELF_DESTRUCT),
+                    completed: completed
+                )
             }
         } else {
             completed(.unavailable(authError: NSLocalizedString("No app password", comment: "Authentication unavailable")))

apps/ios/Shared/Views/LocalAuth/LocalAuthView.swift

@@ -7,6 +7,7 @@
 //
 
 import SwiftUI
+import SimpleXChat
 
 struct LocalAuthView: View {
     @EnvironmentObject var m: ChatModel
@@ -15,6 +16,13 @@ struct LocalAuthView: View {
 
     var body: some View {
         PasscodeView(passcode: $password, title: authRequest.title ?? "Enter Passcode", reason: authRequest.reason, submitLabel: "Submit") {
+            if let sdPassword = kcSelfDestructPassword.get(), authRequest.selfDestruct && password == sdPassword {
+                deleteStorageAndRestart(sdPassword) { r in
+                    m.laRequest = nil
+                    authRequest.completed(r)
+                }
+                return
+            }
             let r: LAResult = password == authRequest.password
                             ? .success
                             : .failed(authError: NSLocalizedString("Incorrect passcode", comment: "PIN entry"))
@@ -25,6 +33,41 @@ struct LocalAuthView: View {
             authRequest.completed(.failed(authError: NSLocalizedString("Authentication cancelled", comment: "PIN entry")))
         }
     }
+
+    private func deleteStorageAndRestart(_ password: String, completed: @escaping (LAResult) -> Void) {
+        Task {
+            do {
+                try await stopChatAsync()
+                try await deleteChatAsync()
+                _ = kcAppPassword.set(password)
+                _ = kcSelfDestructPassword.remove()
+                await NtfManager.shared.removeAllNotifications()
+                let displayName = UserDefaults.standard.string(forKey: DEFAULT_LA_SELF_DESTRUCT_DISPLAY_NAME)
+                UserDefaults.standard.removeObject(forKey: DEFAULT_LA_SELF_DESTRUCT)
+                UserDefaults.standard.removeObject(forKey: DEFAULT_LA_SELF_DESTRUCT_DISPLAY_NAME)
+                await MainActor.run {
+                    m.chatDbChanged = true
+                    m.chatInitialized = false
+                }
+                resetChatCtrl()
+                try initializeChat(start: true)
+                m.chatDbChanged = false
+                appStateGroupDefault.set(.active)
+                if m.currentUser != nil { return }
+                var profile: Profile? = nil
+                if let displayName = displayName, displayName != "" {
+                    profile = Profile(displayName: displayName, fullName: "")
+                }
+                m.currentUser = try apiCreateActiveUser(profile)
+                onboardingStageDefault.set(.onboardingComplete)
+                m.onboardingStage = .onboardingComplete
+                try startChat()
+                completed(.success)
+            } catch {
+                completed(.failed(authError: NSLocalizedString("Incorrect passcode", comment: "PIN entry")))
+            }
+        }
+    }
 }
 
 struct LocalAuthView_Previews: PreviewProvider {

apps/ios/Shared/Views/LocalAuth/SetAppPasscodeView.swift

@@ -10,6 +10,9 @@ import SwiftUI
 import SimpleXChat
 
 struct SetAppPasscodeView: View {
+    var passcodeKeychain: KeyChainItem = kcAppPassword
+    var title: LocalizedStringKey = "New Passcode"
+    var reason: String?
     var submit: () -> Void
     var cancel: () -> Void
     @Environment(\.dismiss) var dismiss: DismissAction
@@ -27,7 +30,7 @@ struct SetAppPasscodeView: View {
                     submitEnabled: { pwd in pwd == enteredPassword }
                 ) {
                     if passcode == enteredPassword {
-                        if kcAppPassword.set(passcode) {
+                        if passcodeKeychain.set(passcode) {
                             enteredPassword = ""
                             passcode = ""
                             dismiss()
@@ -38,7 +41,7 @@ struct SetAppPasscodeView: View {
                     }
                 }
             } else {
-                setPasswordView(title: "New Passcode", submitLabel: "Save") {
+                setPasswordView(title: title, submitLabel: "Save") {
                     enteredPassword = passcode
                     passcode = ""
                     confirming = true
@@ -51,7 +54,7 @@ struct SetAppPasscodeView: View {
     }
 
     private func setPasswordView(title: LocalizedStringKey, submitLabel: LocalizedStringKey, submitEnabled: (((String) -> Bool))? = nil, submit: @escaping () -> Void) -> some View {
-        PasscodeView(passcode: $passcode, title: title, submitLabel: submitLabel, submitEnabled: submitEnabled, submit: submit) {
+        PasscodeView(passcode: $passcode, title: title, reason: reason, submitLabel: submitLabel, submitEnabled: submitEnabled, submit: submit) {
             dismiss()
             cancel()
         }

apps/ios/Shared/Views/Onboarding/CreateProfile.swift

@@ -129,6 +129,8 @@ struct CreateProfile: View {
                     m.onboardingStage = .step3_CreateSimpleXAddress
                 }
             } else {
+                onboardingStageDefault.set(.onboardingComplete)
+                m.onboardingStage = .onboardingComplete
                 dismiss()
                 m.users = try listUsers()
                 try getUserChatData()

apps/ios/Shared/Views/UserSettings/IncognitoHelp.swift

@@ -13,6 +13,7 @@ struct IncognitoHelp: View {
         VStack(alignment: .leading) {
             Text("Incognito mode")
                 .font(.largeTitle)
+                .bold()
                 .padding(.vertical)
             ScrollView {
                 VStack(alignment: .leading) {