workaround for a permission issue in NotificationServiceExtension

Session.xcodeproj/project.pbxproj

@@ -7829,7 +7829,7 @@
 				CODE_SIGN_ENTITLEMENTS = Session/Meta/Signal.entitlements;
 				CODE_SIGN_IDENTITY = "iPhone Developer";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
-				CURRENT_PROJECT_VERSION = 523;
+				CURRENT_PROJECT_VERSION = 524;
 				DEVELOPMENT_TEAM = SUQ8J2PCT7;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
@@ -7900,7 +7900,7 @@
 				CODE_SIGN_ENTITLEMENTS = Session/Meta/Signal.entitlements;
 				CODE_SIGN_IDENTITY = "iPhone Developer";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
-				CURRENT_PROJECT_VERSION = 523;
+				CURRENT_PROJECT_VERSION = 524;
 				DEVELOPMENT_TEAM = SUQ8J2PCT7;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",

Session/Conversations/ConversationVC+Interaction.swift

@@ -121,7 +121,7 @@ extension ConversationVC:
         let threadId: String = self.viewModel.threadData.threadId
         
         guard
-            Permissions.hasMicrophonePermission,
+            Permissions.microphone == .granted,
             self.viewModel.threadData.threadVariant == .contact,
             Singleton.callManager.currentCall == nil,
             let call: SessionCall = Storage.shared.read({ [dependencies = viewModel.dependencies] db in
@@ -323,7 +323,7 @@ extension ConversationVC:
         
         Permissions.requestMicrophonePermissionIfNeeded()
         
-        if !Permissions.hasMicrophonePermission {
+        if Permissions.microphone != .granted {
             SNLog("Proceeding without microphone access. Any recorded video will be silent.")
         }
         
@@ -2487,7 +2487,7 @@ extension ConversationVC:
         
         // Keep screen on
         UIApplication.shared.isIdleTimerDisabled = false
-        guard Permissions.hasMicrophonePermission else { return }
+        guard Permissions.microphone == .granted else { return }
         
         // Cancel any current audio playback
         self.viewModel.stopAudio()

Session/Conversations/Message Cells/CallMessageCell.swift

@@ -169,7 +169,7 @@ final class CallMessageCell: MessageCell {
                 !Storage.shared[.areCallsEnabled]
             ) || (
                 messageInfo.state == .permissionDeniedMicrophone &&
-                !Permissions.hasMicrophonePermission
+                Permissions.microphone != .granted
             )
         )
         infoImageViewWidthConstraint.constant = (shouldShowInfoIcon ? CallMessageCell.iconSize : 0)
@@ -230,7 +230,7 @@ final class CallMessageCell: MessageCell {
                 !Storage.shared[.areCallsEnabled]
             ) || (
                 messageInfo.state == .permissionDeniedMicrophone &&
-                !Permissions.hasMicrophonePermission
+                Permissions.microphone != .granted
             )
         else { return }
         

Session/Meta/AppDelegate.swift

@@ -277,6 +277,9 @@ class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterD
         
         Log.info("[AppDelegate] Setting 'isMainAppActive' to false.")
         UserDefaults.sharedLokiProject?[.isMainAppActive] = false
+        
+        Log.info("[AppDelegate] Setting 'lastSeenHasMicrophonePermission'.")
+        UserDefaults.sharedLokiProject?[.lastSeenHasMicrophonePermission] = (Permissions.microphone == .granted)
 
         Log.flush()
     }

Session/Utilities/Permissions.swift

@@ -91,8 +91,9 @@ extension Permissions {
                 case .denied: handlePermissionDenied()
                 case .undetermined:
                     onNotGranted?()
-                    AVAudioApplication.requestRecordPermission { _ in }
-                    
+                    AVAudioApplication.requestRecordPermission { granted in
+                        UserDefaults.sharedLokiProject?[.lastSeenHasMicrophonePermission] = granted
+                    }
                 default: break
             }
         } else {
@@ -101,8 +102,9 @@ extension Permissions {
                 case .denied: handlePermissionDenied()
                 case .undetermined:
                     onNotGranted?()
-                    AVAudioSession.sharedInstance().requestRecordPermission { _ in }
-                    
+                    AVAudioSession.sharedInstance().requestRecordPermission { granted in
+                        UserDefaults.sharedLokiProject?[.lastSeenHasMicrophonePermission] = granted
+                    }
                 default: break
             }
         }

SessionMessagingKit/Sending & Receiving/Message Handling/MessageReceiver+Calls.swift

@@ -81,7 +81,7 @@ extension MessageReceiver {
             return
         }
         
-        guard db[.areCallsEnabled] && Permissions.hasMicrophonePermission else {
+        guard db[.areCallsEnabled] && Permissions.microphone == .granted else {
             let state: CallMessage.MessageInfo.State = (db[.areCallsEnabled] ? .permissionDeniedMicrophone : .permissionDenied)
             
             SNLog("[MessageReceiver+Calls] Microphone permission is \(AVAudioSession.sharedInstance().recordPermission)")

SessionNotificationServiceExtension/NotificationServiceExtension.swift

@@ -100,6 +100,15 @@ public final class NotificationServiceExtension: UNNotificationServiceExtension
             (UserDefaults.sharedLokiProject?[.lastCallPreOffer]) != nil
         )
         
+        let hasMicrophonePermission: Bool = {
+            return switch Permissions.microphone {
+                case .undetermined:
+                    (UserDefaults.sharedLokiProject?[.lastSeenHasMicrophonePermission]).defaulting(to: false)
+                default:
+                    Permissions.microphone == .granted
+            }
+        }()
+        
         // HACK: It is important to use write synchronously here to avoid a race condition
         // where the completeSilenty() is called before the local notification request
         // is added to notification center
@@ -142,6 +151,7 @@ public final class NotificationServiceExtension: UNNotificationServiceExtension
                             using: dependencies
                         )
                         
+                        // FIXME: Do we need to call it here? It does nothing other than log what kind of message we received
                         try MessageReceiver.handleCallMessage(
                             db,
                             threadId: threadId,
@@ -154,7 +164,7 @@ public final class NotificationServiceExtension: UNNotificationServiceExtension
                             throw NotificationError.ignorableMessage
                         }
                         
-                        switch ((db[.areCallsEnabled] && Permissions.hasMicrophonePermission), isCallOngoing) {
+                        switch ((db[.areCallsEnabled] && hasMicrophonePermission), isCallOngoing) {
                             case (false, _):
                             Log.info("Microphone permission is \(AVAudioSession.sharedInstance().recordPermission)")
                                 if

SessionUtilitiesKit/General/SNUserDefaults.swift

@@ -34,6 +34,7 @@ public enum SNUserDefaults {
         case wasUnlinked
         case isMainAppActive
         case isCallOngoing
+        case lastSeenHasMicrophonePermission
     }
 
     public enum Date: Swift.String {

SessionUtilitiesKit/Utilities/Permissions.swift

@@ -3,11 +3,37 @@
 import AVFAudio
 
 public enum Permissions {
-    public static var hasMicrophonePermission: Bool {
+    
+    public enum MicrophonePermisson {
+        case denied
+        case granted
+        case undetermined
+        case unknown
+    }
+    
+    public static var microphone: MicrophonePermisson {
         if #available(iOSApplicationExtension 17.0, *) {
-            AVAudioApplication.shared.recordPermission == .granted
+            switch AVAudioApplication.shared.recordPermission {
+                case .undetermined:
+                    return .undetermined
+                case .denied:
+                    return .denied
+                case .granted:
+                    return .granted
+                @unknown default:
+                    return .unknown
+            }
         } else {
-            AVAudioSession.sharedInstance().recordPermission == .granted
+            switch AVAudioSession.sharedInstance().recordPermission {
+                case .undetermined:
+                    return .undetermined
+                case .denied:
+                    return .denied
+                case .granted:
+                    return .granted
+                @unknown default:
+                    return .unknown
+            }
         }
     }
 }