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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| import UIKit | ||
| import AVFoundation | ||
| import UserNotifications | ||
| import Combine | ||
|
|
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| private enum UserNotification: String | ||
| { | ||
| case appStoppedRunning = "com.rileytestut.Clip.AppStoppedRunning" | ||
| } | ||
|
|
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| private extension CFNotificationName | ||
| { | ||
| static let altstoreRequestAppState: CFNotificationName = CFNotificationName("com.altstore.RequestAppState.com.rileytestut.Clip" as CFString) | ||
| static let altstoreAppIsRunning: CFNotificationName = CFNotificationName("com.altstore.AppState.Running.com.rileytestut.Clip" as CFString) | ||
| } | ||
|
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| private let ReceivedApplicationState: @convention(c) (CFNotificationCenter?, UnsafeMutableRawPointer?, CFNotificationName?, UnsafeRawPointer?, CFDictionary?) -> Void = | ||
| { (center, observer, name, object, userInfo) in | ||
| ApplicationMonitor.shared.receivedApplicationStateRequest() | ||
| } | ||
|
|
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| class ApplicationMonitor | ||
| { | ||
| static let shared = ApplicationMonitor() | ||
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| let locationManager = LocationManager() | ||
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| private(set) var isMonitoring = false | ||
|
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| private var backgroundTaskID: UIBackgroundTaskIdentifier? | ||
| } | ||
|
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| extension ApplicationMonitor | ||
| { | ||
| func start() | ||
| { | ||
| guard !self.isMonitoring else { return } | ||
| self.isMonitoring = true | ||
| print("Monitoring app background") | ||
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| self.cancelApplicationQuitNotification() // Cancel any notifications from a previous launch. | ||
| self.scheduleApplicationQuitNotification() | ||
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| self.locationManager.start() | ||
| self.registerForNotifications() | ||
| } | ||
|
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| func stop() { | ||
| self.cancelApplicationQuitNotification() | ||
| } | ||
| } | ||
|
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| private extension ApplicationMonitor | ||
| { | ||
| func registerForNotifications() | ||
| { | ||
| let center = CFNotificationCenterGetDarwinNotifyCenter() | ||
| CFNotificationCenterAddObserver(center, nil, ReceivedApplicationState, CFNotificationName.altstoreRequestAppState.rawValue, nil, .deliverImmediately) | ||
| } | ||
|
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| func scheduleApplicationQuitNotification() | ||
| { | ||
| let delay = 5 as TimeInterval | ||
|
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| let content = UNMutableNotificationContent() | ||
| content.title = NSLocalizedString("App Stopped Running", comment: "") | ||
| content.body = NSLocalizedString("Tap this notification to resume ValidationRelay", comment: "") | ||
|
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| let trigger = UNTimeIntervalNotificationTrigger(timeInterval: delay + 1, repeats: false) | ||
|
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| let request = UNNotificationRequest(identifier: UserNotification.appStoppedRunning.rawValue, content: content, trigger: trigger) | ||
| UNUserNotificationCenter.current().add(request) | ||
|
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| DispatchQueue.global().asyncAfter(deadline: .now() + delay) { | ||
| // If app is still running at this point, we schedule another notification with same identifier. | ||
| // This prevents the currently scheduled notification from displaying, and starts another countdown timer. | ||
| self.scheduleApplicationQuitNotification() | ||
| } | ||
| } | ||
|
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| func cancelApplicationQuitNotification() | ||
| { | ||
| UNUserNotificationCenter.current().removePendingNotificationRequests(withIdentifiers: [UserNotification.appStoppedRunning.rawValue]) | ||
| } | ||
|
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| func sendNotification(title: String, message: String) | ||
| { | ||
| let content = UNMutableNotificationContent() | ||
| content.title = title | ||
| content.body = message | ||
|
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| let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: nil) | ||
| UNUserNotificationCenter.current().add(request) | ||
| } | ||
| } | ||
|
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| private extension ApplicationMonitor | ||
| { | ||
| func receivedApplicationStateRequest() | ||
| { | ||
| guard UIApplication.shared.applicationState != .background else { return } | ||
|
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| let center = CFNotificationCenterGetDarwinNotifyCenter() | ||
| CFNotificationCenterPostNotification(center!, CFNotificationName(CFNotificationName.altstoreAppIsRunning.rawValue), nil, nil, true) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| <?xml version="1.0" encoding="UTF-8"?> | ||
| <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> | ||
| <plist version="1.0"> | ||
| <dict> | ||
| <key>NSLocationWhenInUseUsageDescription</key> | ||
| <string>Keep ValidationRelay alive in the background</string> | ||
| <key>NSLocationAlwaysUsageDescription</key> | ||
| <string>Keep ValidationRelay alive in the background</string> | ||
| <key>NSLocationAlwaysAndWhenInUseUsageDescription</key> | ||
| <string>Keep ValidationRelay alive in the background</string> | ||
| <key>UIBackgroundModes</key> | ||
| <array> | ||
| <string>location</string> | ||
| <string>processing</string> | ||
| </array> | ||
| </dict> | ||
| </plist> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,143 @@ | ||
| // | ||
| // LocationManager.swift | ||
| // Clip | ||
| // | ||
| // Created by Riley Testut on 11/6/20. | ||
| // Copyright © 2020 Riley Testut. All rights reserved. | ||
| // | ||
|
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| // taken from https://github.com/rileytestut/Clip. many thanks | ||
|
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||
| import CoreLocation | ||
| import Combine | ||
| import UIKit | ||
|
|
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| extension LocationManager | ||
| { | ||
| typealias Status = Result<Void, Swift.Error> | ||
|
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| enum Error: LocalizedError, RecoverableError | ||
| { | ||
| case requiresAlwaysAuthorization | ||
|
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| var failureReason: String? { | ||
| switch self | ||
| { | ||
| case .requiresAlwaysAuthorization: return NSLocalizedString("To run in the background, ValidationRelay requires “Always” location permission.", comment: "") | ||
| } | ||
| } | ||
|
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| var recoverySuggestion: String? { | ||
| switch self | ||
| { | ||
| case .requiresAlwaysAuthorization: return NSLocalizedString("Please grant ValidationRelay “Always” location permission in Settings so it can run in the background indefinitely.", comment: "") | ||
| } | ||
| } | ||
|
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| var recoveryOptions: [String] { | ||
| switch self | ||
| { | ||
| case .requiresAlwaysAuthorization: return [NSLocalizedString("Open Settings", comment: "")] | ||
| } | ||
| } | ||
|
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| func attemptRecovery(optionIndex recoveryOptionIndex: Int) -> Bool | ||
| { | ||
| return false | ||
| } | ||
|
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| func attemptRecovery(optionIndex recoveryOptionIndex: Int, resultHandler handler: @escaping (Bool) -> Void) | ||
| { | ||
| switch self | ||
| { | ||
| case .requiresAlwaysAuthorization: | ||
| let openURL = URL(string: UIApplication.openSettingsURLString)! | ||
| UIApplication.shared.open(openURL, options: [:], completionHandler: handler) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| class LocationManager: NSObject, ObservableObject | ||
| { | ||
| var status: Status? = nil | ||
|
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| private let locationManager: CLLocationManager | ||
|
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| override init() | ||
| { | ||
| self.locationManager = CLLocationManager() | ||
| self.locationManager.distanceFilter = CLLocationDistanceMax | ||
| self.locationManager.pausesLocationUpdatesAutomatically = false | ||
| self.locationManager.allowsBackgroundLocationUpdates = true | ||
|
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| if #available(iOS 14.0, *) | ||
| { | ||
| self.locationManager.desiredAccuracy = kCLLocationAccuracyReduced | ||
| } | ||
| else | ||
| { | ||
| self.locationManager.desiredAccuracy = kCLLocationAccuracyThreeKilometers | ||
| } | ||
|
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| super.init() | ||
|
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| self.locationManager.delegate = self | ||
| } | ||
|
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| func start() | ||
| { | ||
| switch self.status | ||
| { | ||
| case .success: return | ||
| case .failure, nil: break | ||
| } | ||
| print("Location permissions: \(locationManager.authorizationStatus)") | ||
| if locationManager.authorizationStatus == .notDetermined || locationManager.authorizationStatus == .authorizedWhenInUse | ||
| { | ||
| self.locationManager.requestAlwaysAuthorization() | ||
| return | ||
| } | ||
|
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| self.locationManager.startUpdatingLocation() | ||
| } | ||
|
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| func stop() | ||
| { | ||
| self.locationManager.stopUpdatingLocation() | ||
| self.status = nil | ||
| } | ||
| } | ||
|
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|
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| extension LocationManager: CLLocationManagerDelegate | ||
| { | ||
| func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) | ||
| { | ||
| switch status | ||
| { | ||
| case .notDetermined: break | ||
| case .restricted, .denied, .authorizedWhenInUse: self.status = .failure(Error.requiresAlwaysAuthorization) | ||
| case .authorizedAlways: self.start() | ||
| @unknown default: break | ||
| } | ||
| } | ||
|
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| func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) | ||
| { | ||
| self.status = .success(()) | ||
| } | ||
|
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| func locationManager(_ manager: CLLocationManager, didFailWithError error: Swift.Error) | ||
| { | ||
| if let error = error as? CLError | ||
| { | ||
| guard error.code != .denied else { | ||
| self.status = .failure(Error.requiresAlwaysAuthorization) | ||
| return | ||
| } | ||
| } | ||
|
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| self.status = .failure(error) | ||
| } | ||
| } |