android: prevent access to chat list when accepting call in locked state (#7627)

* android: prevent access to chat list when accepting call in locked state

* android: request auth on resume during a call

---------

Co-authored-by: Evgeny @ SimpleX Chat <259188159+evgeny-simplex@users.noreply.github.com>
Co-authored-by: shum <github.shum@liber.li>

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/App.kt

@@ -207,7 +207,7 @@ fun MainScreen() {
       SwitchingUsersView()
     }
 
-    if (unauthorized.value && !(chatModel.activeCallViewIsVisible.value && chatModel.showCallView.value)) {
+    if (unauthorized.value) {
       LaunchedEffect(Unit) {
         // With these constrains when user presses back button while on ChatList, activity destroys and shows auth request
         // while the screen moves to a launcher. Detect it and prevent showing the auth
@@ -221,7 +221,8 @@ fun MainScreen() {
         SplashView(true)
         ModalManager.fullscreen.showPasscodeInView()
       }
-    } else {
+    }
+    if (!unauthorized.value || chatModel.activeCallViewIsVisible.value) {
       if (chatModel.showCallView.value) {
         if (appPlatform.isAndroid) {
           LaunchedEffect(Unit) {
@@ -235,6 +236,8 @@ fun MainScreen() {
           ActiveCallView()
         }
       }
+    }
+    if (!unauthorized.value) {
       ModalManager.fullscreen.showOneTimePasscodeInView()
       AlertManager.privacySensitive.showInView()
       if (onboarding == OnboardingStage.OnboardingComplete) {

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/AppLock.kt

@@ -269,7 +269,11 @@ object AppLock {
   fun elapsedRealtime(): Long = System.nanoTime() / 1_000_000
 
   fun recheckAuthState() {
-    if (ChatModel.showCallView.value) return
+    if (ChatModel.showCallView.value) {
+      // BiometricPrompt drops a prompt requested while MainActivity is stopped (call on lock screen), so request it again
+      if (userAuthorized.value == false) runAuthenticate()
+      return
+    }
     val enteredBackgroundVal = enteredBackground.value
     val delay = ChatController.appPrefs.laLockDelay.get()
     if (enteredBackgroundVal == null || elapsedRealtime() - enteredBackgroundVal >= delay * 1000) {

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/platform/NtfManager.kt

@@ -1,5 +1,6 @@
 package chat.simplex.common.platform
 
+import chat.simplex.common.AppLock
 import chat.simplex.common.model.*
 import chat.simplex.common.views.call.RcvCallInvitation
 import chat.simplex.common.views.chatlist.acceptContactRequest
@@ -96,6 +97,7 @@ abstract class NtfManager {
   }
 
   fun acceptCallAction(chatId: ChatId) {
+    AppLock.recheckAuthState()
     chatModel.clearOverlays.value = true
     val invitation = chatModel.callInvitations[chatId]
     if (invitation == null) {