Posts under App & System Services topic

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Crashes in NEFilterPacketInterpose createChannel
Hello, Our users are seeing random crashes in our packet filter system extension on macOS. Any help pointing me in the right direction to either avoid the issue or fix it would be greatly appreciated. Attached is the crash log. Thank you. packetfilter.crash Crashed Thread: 2 Dispatch queue: com.apple.network.connections Exception Type: EXC_BAD_ACCESS (SIGBUS) Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000112918700 Exception Note: EXC_CORPSE_NOTIFY Termination Signal: Bus error: 10 Termination Reason: Namespace SIGNAL, Code 0xa Terminating Process: exc handler [40687] ... Thread 2 Crashed:: Dispatch queue: com.apple.network.connections 0 libsystem_kernel.dylib 0x00007fff2089b46e os_channel_get_next_slot + 230 1 com.apple.NetworkExtension 0x00007fff2e2e2643 __40-[NEFilterPacketInterpose createChannel]_block_invoke + 560 2 libdispatch.dylib 0x00007fff20718806 _dispatch_client_callout + 8 3 libdispatch.dylib 0x00007fff2071b1b0 _dispatch_continuation_pop + 423 4 libdispatch.dylib 0x00007fff2072b564 _dispatch_source_invoke + 2061 5 libdispatch.dylib 0x00007fff20720318 _dispatch_workloop_invoke + 1784 6 libdispatch.dylib 0x00007fff20728c0d _dispatch_workloop_worker_thread + 811 7 libsystem_pthread.dylib 0x00007fff208bf45d _pthread_wqthread + 314 8 libsystem_pthread.dylib 0x00007fff208be42f start_wqthread + 15
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1.3k
May ’23
Touchscreen gestures in CarPlay aren't recognized in the app
Touchscreen gestures in CarPlay aren't recognized in the app (delegate CPMapTemplateDelegate functions aren't called). Tried also in the Coastal Roads demo app to add test functions to check that pan functions are called - the same: func mapTemplateDidBeginPanGesture(_ mapTemplate: CPMapTemplate) { MemoryLogger.shared.appendEvent("Did begin pan gesture.") } func mapTemplate(_ mapTemplate: CPMapTemplate, panBeganWith direction: CPMapTemplate.PanDirection) { MemoryLogger.shared.appendEvent("Did begin pan gesture with direction \(direction.rawValue).") } Note: buttons (on carplay app) are working when pressing on them. Also, the desktop of carplay can be panned (by swipe gesture). Using Xcode 14.3, MacBook pro M1
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689
Jun ’23
Granularity/Accuracy of delivered locations with live updates
First of all : Thanks for the great presentation (wwdc2023-10180), Siraj ! This new, simple API looks like what we've been looking for for easy manageable background location updates with 'automatic battery drain minimization' :-) There were two questions that came to my mind. As far as I understood, the CLLocationUpdate.LiveConfiguration is used to help the location services to improve the location fixes. Are there other options planned to specify the granularity of delivered locations e.g., how accurate the locations need to be (as the desiredAccuracy and distanceFilter settings for the olden CLLocationManager)? Does the Implementation switch between significant location changes and regular, more expensive ways (like GPS hardware) or just deliver the most feasible accuracy available at the time of notification? I'm just curious - if I get the most feasible granularity, everything is fine for me anyway :-) Thanks again, Michael
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1k
Jun ’23
@Attribute 'unique' and complex keys
The 'unique' attribute is a really nice feature, BUT. In some of my apps, the unique identifier for an object is a combination of multiple attributes. (Example: a book title is not unique, but a combination of book title and author list is.) How do I model this with SwiftData? I cannot use @Attribute(.unique) on either the title OR the author list, but I want SwiftData to provide the same "insert or update" logic. Is this possible?
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2.7k
Jun ’23
Permission error occurs when I use setDefaultApplication(at:toOpen:completion:)
I'd like to set my macOS app written in Swift as default app when opening .mp4 file. I think I can do it with setDefaultApplication(at:toOpen:completion:). https://developer.apple.com/documentation/appkit/nsworkspace/3753002-setdefaultapplication However, permission error occurs when I use it. The error is: Error Domain=NSCocoaErrorDomain Code=256 "The file couldn’t be opened." UserInfo={NSUnderlyingError=0x6000031d0150 {Error Domain=NSOSStatusErrorDomain Code=-54 "permErr: permissions error (on file open)"}} I tried to give my app full-disk access, but it didn't work. I also tried to use setDefaultApplication(at:toOpenFileAt:completion:), then it works with no error, but it effects on only one file. What I want to do is to set my app as default app of all .mp4 files. How do I achieve this? My code is like below: let bundleUrl = Bundle.main.bundleURL NSWorkspace.shared.setDefaultApplication(at: bundleUrl, toOpen: .mpeg4Movie) { error in print(error) } Thank you.
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549
Jun ’23
APP to APP Verification Method - Apple Pay - Apple Wallet
Hello. we are looking in adding an additional verification method as part of our in app provisioning to apple wallet. the method is called app to app verification method where basically when the customer adds their card (debit or credit) on apple wallet they can be verified through a third party app. does apple support this? where can i find any material related to this?
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1.5k
Jun ’23
Change includeAllNetworks from NetworkExtension while tunnel is running
Hi, I saw that almost each OS version, on ios and macos, handles differently changing includeAllNetworks while the tunnel is running. On some the entire OS reports no-net, while others, specially latest versions, handle this fine. Can includeAllNetworks be changed while the tunnel is running, or the tunnel must be stopped and restarted with the new value? e.g. the tunnel is started with it set to false, but later is changed to true into VPN profile. And on the same note, regarding setTunnelNetworkSettings, can this be called multiple times while the tunnel is running? For example if the VPN server IP changes. Because what I've saw each call to setTunnelNetworkSettings after VPN connected results in at least DNS leaks, because the routing table is recreated. Let me know if it is easier to track to create separate questions. Thanks
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1k
Jun ’23
URLCache behavior for request with different header values
Greetings, I would like to understand this URLCache behavior for two different requests to the same end point but with a different header value. Here is a code with comment explaining the behavior. // Create a request to for a url. let url = URL(string: "https://<my url>?f=json")! var request = URLRequest(url: url) // Set custom header with a value. request.setValue("myvalue", forHTTPHeaderField: "CustomField") // Send request to get the response. let (data, response) = try await URLSession.shared.data(for: request) print("data: \(String(describing: String(data: data, encoding: .utf8)))") print("response: \(response)") // Create second request to the same url but with different value of custom header field. var request2 = URLRequest(url: url) request2.setValue("newvalue", forHTTPHeaderField: "CustomField") // Check the URL cache for second request and it returns the response // of the first request even though the second request has different header value. let cachedResponse = URLCache.shared.cachedResponse(for: request2) print("cachedResponse: \(cachedResponse?.response)") Is this a bug in URLCache that request headers are not matched while returning the response? Is this an expected behavior? If yes, why?
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1.6k
Jun ’23
iOS 17 AppIntent and requesting confirmation for widgets
I have a home widget with buttons (new in iOS 17). In order to prevent taking action if the user taps on the widget buttons accidentally, I want to ask the user for confirmation. It appeared that requestConfirmation be exactly what I needed, but no confirmation view shows up when I invoke this method in the perform function. I have tried the following: try await requestConfirmation(result: .result(dialog: "Are you sure you want to do this?") { Image(.mdlsWhite) }) and this alternative: let confirmed: Bool = try await $name.requestConfirmation(for: self.name, dialog: IntentDialog(stringLiteral: msg)) Neither option work. I am starting to think that the requestConfirmation is not to be used with Home Widgets. Is there a better way to handle confirmations for buttons included in a Home Widget?
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1.4k
Jun ’23
ApplicationTokens changing
We persist ApplicationTokens in a storage container that ShieldConfigurationExtension has access to. In rare, cases all the ApplicationTokens for a user seem to change. We know this because the Application parameter passed into configuration(shielding application: Application) -> ShieldConfiguration function has a Token that does not match (using == ) any of the ones we are persisting in storage. Interestingly, the persisted ones still work, so I don't believe storage has gotten corrupted or anything. We can use them to add or remove shields, we can use them to display labels of the apps they represent, etc. But they don’t match what’s passed into the ShieldConfiguration extension. If the user goes into the FamilyPicker at this point and selects an app of a token that we are already persisting, the FamilyPickerSelection will have a token matching the new one that is passed into ShieldConfigurationExtension, not the one we persisted when they last selected that app. This leads me to believe the tokens are updated/rotated in some cases. When and why does this happen, and how can we handle it gracefully?
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1.7k
Jun ’23
Does originalTransactionId change if a user resubscribes?
Hello, For In App Purchases with a renewable subscription, does the originalTransactionId change in the following scenarios? Case 1: A user subscribes to a subscription A within a Subscription Group SG1. The user then cancels it at the end of the month. Comes back later to subscribe to the same subscription A within the same Subscription Group SG1. Case 2: A user subscribes to a subscription A within a Subscription Group SG1. The user then cancels it at the end of the month. Comes back later to subscribe to subscription B within the same Subscription Group SG1.
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1.1k
Jun ’23
Is there a `isiOSAppOnVision` flag to check iOS app on Vision Pro at runtime?
Hello, When an iOS app runs on Vision Pro in compatible mode, is there a flag such as isiOSAppOnVision to determine the underlying OS at runtime? Just like the ProcessInfo.isiOSAppOnMac. It will be useful to optimize the app for visionOS. Already checked but not useful: #if os(xrOS) does not work in compatible mode since no code is recompiled. UIDevice.userInterfaceIdiom returns .pad instead of .reality. Thanks.
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2.9k
Jul ’23
File Provider : unable to trigger `fetchPartialContents(for:version:request:minimalRange:aligningTo:options:completionHandler:)` when opening files
https://developer.apple.com/documentation/fileprovider/nsfileproviderpartialcontentfetching/3923718-fetchpartialcontents fetchPartialContents(for:version:request:minimalRange:aligningTo:options:completionHandler:) I need to use this function to fetch contents of the files partially. But it seems I'm just unable to receive any callback when i try to open the file via double click on finder. I've tried to open files of different types and sizes but still i'm defaulting back to fetchContents(for:version:request:completionHandler:) . I've been thinking if there are any specific configurations or requirements that i have to meet , so i could trigger this callback function for all the fetch Operations for files ? If No, then where am i going wrong ?
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945
Jul ’23
Prevent non-admin users to prevent unloading launch agent
We want to keep our Mac UI app running all the time, when a user is logged into to a mac machine (app resides in /Applications). To achieve this, we can use launchctl from within post-isntall script to load a plist file which resides in /Library/LaunchAgent. How to prevent a user (without admin password) to unload the agent using launchctl from terminal?
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868
Jul ’23
Strange behavior and log entries for Mac Catalyst Action
I have a text based action for iPhone and Mac Catalyst I am developing in Xcode 14.3.1 on macOS 13.4.1. I have the container app, an action and an AppGroup defined. I have confirmed that I can read the necessary shared defaults when the action launches. At this point the UI for the action is a simple textview in which I hope to display a modified version of the text passed to the action in the NSExtensionItems. I am not using a simulator. I am running the action directly using Xcode. What is happening is that the ActionViewController viewDidLoad runs but no visible window opens. In the console I see this as the action launches: 2023-07-05 18:27:23.692277-0700 XYZ[4634:279295] [ViewBridge] ViewBridge attempted to look up a hosted window with identifier 8E816BD5-67D3-402D-ADEB-AC59EDFA1F3B, but it was never registered. 2023-07-05 18:27:23.692408-0700 XYZ[4634:279295] [WindowHosting] UIScene property of UINSSceneViewController was accessed before it was set. .... The last line above is repeated 12 times.... Any helpful ideas would be deeply appreciated! Steve
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1.4k
Jul ’23
StoreKit2 AppTransaction originalPurchaseVersion
I am looking to move from paid app to fremium without upsetting my existing users. I see WWDC2022 session where new fields introduced in iOS 16 are used to extract original application version user used to purchase the app. While my app supports iOS 14 and above, I am willing to sacrifice iOS 14 and go iOS 15 and above as StoreKit2 requires iOS 15 at the minimum. The code below is however only valid for iOS 16. I need to know what is the best way out for iOS 15 devices if I am using StoreKit2? If it is not possible in StoreKit2, then how much is the work involved in original StoreKit API(because in that case I can handle for iOS 14 as well)?
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694
Jul ’23
Push payload is not present on notification tap
I am checking if the user taps on the firebase push notification and get the payload. override func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) { let userInfo = response.notification.request.content.userInfo os_log("notification tapped %{public}@", log: OSLog.push, type: .info, userInfo) handleNotificationPayload(userInfo as! [String: AnyObject]) setFlutterLinkClickedVariable() } My use case is in app terminated state when push notification is tapped, get the link from payload and navigate to corresponding screen based on the link. This is working when there is only one push notification. When there are multiple push notifications with different links in the payload, only the first notification I tap works. Rest of the notifications just launches the app and does not navigate because the link is not set. I am getting the link from the payload and invoking flutter code which sets the link in the user defaults (shared preferences) and when the app launches in the home screen it checks for this variable and navigates accordingly. func handleNotificationPayload(_ payload: [String: AnyObject]) { if let link = payload["link"] as? String { setFlutterLinkVariable(link) } } override func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) { os_log("app did receive remote notification %{public}@", log: OSLog.push, type: .info, userInfo) handleNotificationPayload(userInfo as! [String : AnyObject]) completionHandler(.newData) } Currently when there is only one push notification it works because the link is set from the above method. The click delegate is not calling. I did set the delegate in application(:didFinishLaunchingWithOptions). UNUserNotificationCenter.current().delegate = self application.registerForRemoteNotifications() How to solve this issue? Thanks.
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742
Jul ’23
Transaction.currentEntitlements is not consistent
I've recently published an app, and while developing it, I could always get consistent entitlements from Transaction.currentEntitlements. But now I see some inconsistent behaviour for a subscribed device in the AppStore version. It looks like sometimes the entitlements do not emit value for the subscriptions. It usually happens on the first couple tries when the device goes offline, or on the first couple tries when the device goes online. But it also happens randomly at other times as well. Can there be a problem with Transaction.currentEntitlements when the connectivity was just changed? Of course my implementation may also be broken. I will give you the details of my implementation below. I have a SubscriptionManager that is observable (irrelevant parts of the entity is omitted): final class SubscriptionManager: NSObject, ObservableObject { private let productIds = ["yearly", "monthly"] private(set) var purchasedProductIDs = Set<String>() var hasUnlockedPro: Bool { return !self.purchasedProductIDs.isEmpty } @MainActor func updatePurchasedProducts() async { var purchasedProductIDs = Set<String>() for await result in Transaction.currentEntitlements { guard case .verified(let transaction) = result else { continue } if transaction.revocationDate == nil { purchasedProductIDs.insert(transaction.productID) } else { purchasedProductIDs.remove(transaction.productID) } } // only update if changed to avoid unnecessary published triggers if purchasedProductIDs != self.purchasedProductIDs { self.purchasedProductIDs = purchasedProductIDs } } } And I call the updatePurchasedProducts() when the app first launches in AppDelegate, before returning true on didFinishLaunchingWithOptions as: Task(priority: .high) { await DependencyContainer.shared.subscriptionManager.updatePurchasedProducts() } You may be wondering maybe the request is not finished yet and I fail to refresh my UI, but it is not the case. Because later on, every time I do something related to a subscribed content, I check the hasUnlockedPro computed property of the subscription manager, which still returns false, meaning the purchasedProductIDs is empty. You may also be curious about the dependency container approach, but I ensured by testing multiple times that there is only one instance of the SubscriptionManager at all times in the app. Which makes me think maybe there is something wrong with Transaction.currentEntitlements I would appreciate any help regarding this problem, or would like to know if anyone else experienced similar problems.
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2.9k
Jul ’23