I started to work on on demand resource. I'm able to download the resource but i'm not able to use those resources in other files. please some one help me in fixing this issue. PFA code.
public class RBPExtensions: NSObject {
class func prefechDataForTag(_ tagArray: [String], completion: #escaping (_ success: Bool) -> Void) {
if let tags = NSSet(array: tagArray) as? Set<String> {
let resourceRequest = NSBundleResourceRequest.init(tags: tags, bundle: Bundle.main)
resourceRequest.conditionallyBeginAccessingResources { (resourceFound) in
if resourceFound {
completion(true)
} else {
resourceRequest.beginAccessingResources(completionHandler: { (error) in
if error != nil {
completion(false)
} else {
let image = UIImage(named: "filter_button_filled")
completion(true)
}
})
}
}
} else {
completion(false)
}
}
}
calling this method as :
RBPExtensions.prefechDataForTag(["Image"], completion: { (success) in
})
Related
I'm using this library to encode and decode custom structs using CloudKit however, ran into this depreciation and the library hasn't been updated. How can I rewrite this block below?
private func fetchAllAssociatedRecords(fromReferences references: [CKRecord.Reference],
recordsStack records: [CKRecord],
referenceDatabase database: CKDatabase,
completion: #escaping ([CKRecord]?, CKCodableError?) -> Void) {
let query = CKFetchRecordsOperation(recordIDs: references.map { $0.recordID })
//problem line --> query.fetchRecordsCompletionBlock = { (recordsDictionary, error) in
if let receivedError = error {
let error = CKCodableError.error(fromCloudkitError: receivedError)
completion(nil, error)
return
}
if let fetchedRecordsDictionary = recordsDictionary {
let fetchedRecords = fetchedRecordsDictionary.map { $0.value }
self.fetchReferences(fromRecords: fetchedRecords,
andAppendTo: records,
withReferenceDatabase: database,
completion: completion)
} else {
let error = CKCodableError(.cloudkitInconsistence)
completion(nil, error)
}
}
database.add(query)
}
I am trying to connect VPN using OpenVPNAdapter but the PacketTunnelProvider isn't called from the controller. What am i missing here?
Controller.swift
import NetworkExtension
var providerManager: NETunnelProviderManager!
var provider = PacketTunnelProvider()
override func viewDidLoad() {
super.viewDidLoad()
self.loadProviderManager {
self.configureVPN(response: self.arrResponse[0], serverAddress: self.arrResponse[0].iP, username: "vpn", password: "vpn")
}
}
func loadProviderManager(completion:#escaping () -> Void) {
NETunnelProviderManager.loadAllFromPreferences { (managers, error) in
if error == nil {
self.providerManager = managers?.first ?? NETunnelProviderManager()
completion()
}
}
}
func configureVPN(response:Response,serverAddress: String, username: String, password: String) {
let data = Data(base64Encoded:response.openVPNConfigDataBase64, options: .ignoreUnknownCharacters)
print(data!)
let decodedString = String(data: data!, encoding: .utf8)!
print(decodedString)
self.providerManager?.loadFromPreferences { error in
if error == nil {
let tunnelProtocol = NETunnelProviderProtocol()
tunnelProtocol.username = username
tunnelProtocol.serverAddress = serverAddress
tunnelProtocol.providerBundleIdentifier = "***.*****.********.***********.********"
tunnelProtocol.providerConfiguration = ["ovpn": data!, "username": username, "password": password]
tunnelProtocol.disconnectOnSleep = false
self.providerManager.protocolConfiguration = tunnelProtocol
self.providerManager.localizedDescription = "SMVPN"
self.providerManager.isEnabled = true
self.providerManager.saveToPreferences(completionHandler: { (error) in
if error == nil {
self.providerManager.loadFromPreferences(completionHandler: { (error) in
if error == nil {
self.provider.startTunnel(options: nil) { error in //this called here not in network extension
if error != nil {
print(error!)
}else {
}
}
}else {
print(error!.localizedDescription)
}
})
}
})
}
}
}
Project Entitlement
PacketTunnelProvider.swift
import NetworkExtension
import OpenVPNAdapter
class PacketTunnelProvider: NEPacketTunnelProvider {
var startHandler: ((Error?) -> Void)?
var stopHandler: (() -> Void)?
var vpnReachability = OpenVPNReachability()
var configuration: OpenVPNConfiguration!
var properties: OpenVPNConfigurationEvaluation!
var UDPSession: NWUDPSession!
var TCPConnection: NWTCPConnection!
lazy var vpnAdapter: OpenVPNAdapter = {
let adapter = OpenVPNAdapter()
adapter.delegate = self
return adapter
}()
override func startTunnel(options: [String : NSObject]?, completionHandler: #escaping (Error?) -> Void) {
// Add code here to start the process of connecting the tunnel.
guard
let protocolConfiguration = protocolConfiguration as? NETunnelProviderProtocol,
let providerConfiguration = protocolConfiguration.providerConfiguration
else {
fatalError()
}
guard let ovpnFileContent: Data = providerConfiguration["ovpn"] as? Data else { return }
let configuration = OpenVPNConfiguration()
configuration.fileContent = ovpnFileContent
do {
properties = try vpnAdapter.apply(configuration: configuration)
} catch {
completionHandler(error)
return
}
configuration.tunPersist = true
if !properties.autologin {
if let username: String = providerConfiguration["username"] as? String, let password: String = providerConfiguration["password"] as? String {
let credentials = OpenVPNCredentials()
credentials.username = username
credentials.password = password
do {
try vpnAdapter.provide(credentials: credentials)
} catch {
completionHandler(error)
return
}
}
}
vpnReachability.startTracking { [weak self] status in
guard status != .notReachable else { return }
self?.vpnAdapter.reconnect(afterTimeInterval: 5)
}
startHandler = completionHandler
vpnAdapter.connect(using: self)
}
override func stopTunnel(with reason: NEProviderStopReason, completionHandler: #escaping () -> Void) {
// Add code here to start the process of stopping the tunnel.
stopHandler = completionHandler
if vpnReachability.isTracking {
vpnReachability.stopTracking()
}
vpnAdapter.disconnect()
completionHandler()
}
override func handleAppMessage(_ messageData: Data, completionHandler: ((Data?) -> Void)?) {
// Add code here to handle the message.
if let handler = completionHandler {
handler(messageData)
}
}
override func sleep(completionHandler: #escaping () -> Void) {
// Add code here to get ready to sleep.
completionHandler()
}
override func wake() {
// Add code here to wake up.
}
}
extension PacketTunnelProvider: OpenVPNAdapterDelegate {
func openVPNAdapter(_ openVPNAdapter: OpenVPNAdapter, configureTunnelWithNetworkSettings networkSettings: NEPacketTunnelNetworkSettings?, completionHandler: #escaping (Error?) -> Void) {
setTunnelNetworkSettings(networkSettings) { (error) in
completionHandler(error == nil ? self.packetFlow as? Error : nil)
}
}
func openVPNAdapter(_ openVPNAdapter: OpenVPNAdapter, configureTunnelWithNetworkSettings networkSettings: NEPacketTunnelNetworkSettings?, completionHandler: #escaping (OpenVPNAdapterPacketFlow?) -> Void) {
setTunnelNetworkSettings(networkSettings) { (error) in
completionHandler(error == nil ? self.packetFlow : nil)
}
}
func openVPNAdapter(_ openVPNAdapter: OpenVPNAdapter, handleEvent event: OpenVPNAdapterEvent, message: String?) {
switch event {
case .connected:
if reasserting {
reasserting = false
}
guard let startHandler = startHandler else { return }
startHandler(nil)
self.startHandler = nil
case .disconnected:
guard let stopHandler = stopHandler else { return }
if vpnReachability.isTracking {
vpnReachability.stopTracking()
}
stopHandler()
self.stopHandler = nil
case .reconnecting:
reasserting = true
default:
break
}
}
func openVPNAdapter(_ openVPNAdapter: OpenVPNAdapter, handleError error: Error) {
guard let fatal = (error as NSError).userInfo[OpenVPNAdapterErrorFatalKey] as? Bool, fatal == true else {
return
}
NSLog("Error: \(error.localizedDescription)")
NSLog("Connection Info: \(vpnAdapter.connectionInformation.debugDescription)")
if vpnReachability.isTracking {
vpnReachability.stopTracking()
}
if let startHandler = startHandler {
startHandler(error)
self.startHandler = nil
} else {
cancelTunnelWithError(error)
}
}
func openVPNAdapter(_ openVPNAdapter: OpenVPNAdapter, handleLogMessage logMessage: String) {
NSLog("Log: \(logMessage)")
}
}
extension PacketTunnelProvider: OpenVPNAdapterPacketFlow {
func readPackets(completionHandler: #escaping ([Data], [NSNumber]) -> Void) {
packetFlow.readPackets(completionHandler: completionHandler)
}
func writePackets(_ packets: [Data], withProtocols protocols: [NSNumber]) -> Bool {
return packetFlow.writePackets(packets, withProtocols: protocols)
}
}
extension NEPacketTunnelFlow: OpenVPNAdapterPacketFlow {}
Extension Entitlement
self.provider.startTunnel(options: nil) { error in // This is called here, not in network extension
This method is called from controller but didn't get called in network extension.
I posted all my code, so if I missed something, then please let me know. Any help is appreciated.
I found this question but I haven't figured it out yet.
PacketTunnelProvider network extension not called Swift 3
You haven't mentioned anything about how you are testing network extension. You should attach a Network extension process before running your project for debugging. Then only network extension methods will trigger for debug.
Finally i found my mistake it's i tried to called network extension but it will never called. so i called NETunnelProviderManager directly and it will work.
self.providerManager.loadFromPreferences(completionHandler: { (error) in
if error == nil {
do {
try self.providerManager.connection.startVPNTunnel()
} catch let error {
print(error.localizedDescription)
}
}else {
print(error!.localizedDescription)
}
})
I've been trying multiple ways to run a function in a for in loop and when all have returned to run another function but for some reason it appears the final function is running before one or more of the others have returned a result.
This is my latest attempt: (both functions work it is just the order which is the issue)
var counter: Int = 0
for owner in arrOwnerList {
self.removeDevice(device: self.device, account: owner as! String) { (isSuccess) -> Void in
print(isSuccess)
if isSuccess {
}
}
}
if self.arrOwnerList.count == self.counter {
self.removeDeviceFromServer(device: self.device)
self.sendEmail(to:"gordon#myemail.co.uk", subject:self.device+" has been removed", text:self.device+" has been removed from the server, please check the sim for bar and termination")
}
}
func removeDevice(device: String, account: String, completion: #escaping (Bool) -> Void) {
let dictHeader : [String:String] = ["username":username,"password":password]
let dictArray = [device]
self.counter += 1
WebHelper.requestPUTAPIRemoveDevice(baseURL+"rootaccount/removedevices/"+account+"?server=MUIR", header: dictHeader, dictArray: dictArray, controllerView: self, success: { (response) in
print(response)
if response.count == 0 {
self.Label1.alpha = 1
print("response count == 0")
DispatchQueue.main.async {
GlobalConstant.showAlertMessage(withOkButtonAndTitle: GlobalConstant.AppName, andMessage: Messages.ServerError, on: self)
}
}
else {
}
}) { (error) in
DispatchQueue.main.async {
GlobalConstant.showAlertMessage(withOkButtonAndTitle: GlobalConstant.AppName, andMessage: error?.localizedDescription ?? Messages.ServerError, on: self)
}
}
let isSuccess = true
self.Label1.alpha = 1
completion(isSuccess)
}
func removeDeviceFromServer(device: String) {
let dictHeader : [String:String] = ["username":username,"password":password]
WebHelper.requestDELETEAPI(baseURL+"defaultdevice/"+device+"?server=MUIR", header: dictHeader, controllerView: self, success: { (response) in
if response.count == 0 {
DispatchQueue.main.async {
GlobalConstant.showAlertMessage(withOkButtonAndTitle: GlobalConstant.AppName, andMessage: Messages.ServerError, on: self)
}
}
else {
if response.count != 0 {
self.Label2.alpha = 1
DispatchQueue.main.async {
self.Label2.alpha = 1
}
}
else{
DispatchQueue.main.async {
GlobalConstant.showAlertMessage(withOkButtonAndTitle: GlobalConstant.AppName, andMessage: Messages.NoDataFound, on: self)
}
}
}
}) { (error) in
DispatchQueue.main.async {
GlobalConstant.showAlertMessage(withOkButtonAndTitle: GlobalConstant.AppName, andMessage: error?.localizedDescription ?? Messages.ServerError, on: self)
}
}
}
DispatchGroup will solve the problems. (https://developer.apple.com/documentation/dispatch/dispatchgroup)
let dispatchGroup = DispatchGroup()
for owner in arrOwnerList {
dispatchGroup.enter()
self.removeDevice(device: self.device, account: owner as! String) { (isSuccess) -> Void in
defer {
dispatchGroup.leave()
}
print(isSuccess)
if isSuccess {
}
}
}
// This block execute when the loop is completed.
dispatchGroup.notify(queue: .main) { [weak self] in
guard let self = self else { return }
self.removeDeviceFromServer(device: self.device)
self.sendEmail(to:"gordon#myemail.co.uk", subject:self.device+" has been removed", text:self.device+" has been removed from the server, please check the sim for bar and termination")
}
After logging in with firebase Auth, I try to update the home page tableview using a delegate except I get this issue -
2020-07-16 10:58:51.078331-0700 Appname[44300:8867431] [AXRuntimeCommon] Unknown client: Appname
2020-07-16 10:58:51.084416-0700 Appname[44300:8867435] [AXRuntimeCommon] AX Lookup problem - errorCode:1100 error:Permission denied portName:'com.apple.iphone.axserver' PID:44186
Once the app loads it checks if the user is logged in on the home page with this function
func isLoggedIn() {
if Firebase.Auth.auth().currentUser == nil {
perform(#selector(handleLogout), with: nil, afterDelay: 0)
}
}
#objc func handleLogout() {
do {
try Auth.auth().signOut()
} catch let logoutError {
print("logout error", logoutError)
}
let startview = StartView()
startview.home = self
let nav = UINavigationController(rootViewController: startview)
nav.modalPresentationStyle = .fullScreen
present(nav, animated: false)
}
Then in the login page it logs the user in and runs the function from the home page but it just shows up as blank.
#objc func Login() {
Auth.auth().signIn(withEmail: EmailField.text!, password: PasswordField.text!) { [weak self] (user, error) in
guard let StrongSelf = self else {
return
}
guard let result = user, error == nil else {
print(error!._code)
self?.handleError(error!)
return
}
let user = result.user
print("logged in \(user)")
//NotificationCenter.default.post(name: NSNotification.Name(rawValue: "loadhome"), object: nil)
StrongSelf.navigationController?.dismiss(animated: true, completion: {
self?.home.loadfirstusers()
})
}
}
var home = HomePage()
It calls this function to update the user data and gets as far as printing sameunisamecourse but it doesn't call the print inside the dispatch.notify for some reason?
func SameUniSameCourse(completion: #escaping (_ success: Bool) -> Void) {
self.dispatchGroup.enter()
service.loadUniversityAndCourse { (uni, course) in
defer{ self.dispatchGroup.leave() }
let usersRef = Firestore.firestore().collection("users").order(by: "Created", descending: true).whereField("University", isEqualTo: uni).whereField("Course", isEqualTo: course)
self.dispatchGroup.enter()
usersRef.getDocuments { (snapshot, error) in
print("samecoursesameuni")
defer{ self.dispatchGroup.leave() }
if let error = error {
print(error.localizedDescription)
} else {
for document in snapshot!.documents {
let data = document.data()
//print(data)
if let dictionary = data as [String:AnyObject]? {
let Info = UserInfo(dictionary: dictionary)
if Info.uid == Auth.auth().currentUser?.uid {
//print(Info.username)
}
else {
self.sameUniSameCourse.append(Info)
//print(Info.username!)
}}}
}
}}
self.dispatchGroup.notify(queue: .main) {
print("dispatchNotifyCalled")
if self.sameUniSameCourse.isEmpty == true {
completion(false)
}
else {
self.masterArray.append(contentsOf: self.sameUniSameCourse)
self.spinner.stopAnimating()
completion(true)
}
}
}
I am working on a personal project where I will be connecting the user to a VPN. I have followed two blog posts on doing this which are https://medium.com/better-programming/how-to-build-an-openvpn-client-on-ios-c8f927c11e80 & https://kean.blog/post/vpn-configuration-manager. I was able to configure the VPN settings but still, it does not connect. Here are the images for my project Signing & Capabilities one for the App and the other is for the network extension.
my ViewController looks like this. There is a folder in the user app document directory that is named user which gets downloaded from the internet and these are the files that are in the folder. I am not sure if I am supposed to use it other than the user.ovpn file
import UIKit
import Zip
import Alamofire
import NetworkExtension
class ViewController: UIViewController {
var selectedServer: Server?
var providerManager: NETunnelProviderManager!
override func viewDidLoad() {
super.viewDidLoad()
self.loadProviderManager {
self.configureVPN(serverAddress: "openvpn://\(self.selectedServer!.server.address):\(self.selectedServer!.server.port)", username: "\(self.username)", password: "\(self.password)")
}
}
func loadProviderManager(completion:#escaping () -> Void) {
NETunnelProviderManager.loadAllFromPreferences { (managers, error) in
if error == nil {
self.providerManager = managers?.first ?? NETunnelProviderManager()
completion()
}
}
}
func configureVPN(serverAddress: String, username: String, password: String) {
guard let configData = self.readFile(path: "user/user.ovpn") else { return }
self.providerManager?.loadFromPreferences { error in
if error == nil {
let tunnelProtocol = NETunnelProviderProtocol()
tunnelProtocol.username = username
tunnelProtocol.serverAddress = serverAddress
tunnelProtocol.providerBundleIdentifier = "com.example.Networking.tunnel"
tunnelProtocol.providerConfiguration = ["ovpn": configData, "username": username, "password": password]
tunnelProtocol.disconnectOnSleep = false
self.providerManager.protocolConfiguration = tunnelProtocol
self.providerManager.localizedDescription = "OpenVPN"
self.providerManager.isEnabled = true
self.providerManager.saveToPreferences(completionHandler: { (error) in
if error == nil {
self.providerManager.loadFromPreferences(completionHandler: { (error) in
do {
try self.providerManager.connection.startVPNTunnel()
} catch let error {
print(error.localizedDescription)
}
})
}
})
}
}
}
func readFile(path: String) -> Data? {
let fileManager = FileManager.default
do {
let documentDirectory = try fileManager.url(for: .documentDirectory, in: .userDomainMask, appropriateFor: nil, create: false)
let fileURL = documentDirectory.appendingPathComponent(path)
return try Data(contentsOf: fileURL, options: .uncached)
}
catch let error {
print(error.localizedDescription)
}
return nil
}
}
And my PacketTunnelProvider looks like this
import NetworkExtension
import OpenVPNAdapter
class PacketTunnelProvider: NEPacketTunnelProvider {
var startHandler: ((Error?) -> Void)?
var stopHandler: (() -> Void)?
var vpnReachability = OpenVPNReachability()
var configuration: OpenVPNConfiguration!
var properties: OpenVPNProperties!
var UDPSession: NWUDPSession!
var TCPConnection: NWTCPConnection!
lazy var vpnAdapter: OpenVPNAdapter = {
let adapter = OpenVPNAdapter()
adapter.delegate = self
return adapter
}()
override func startTunnel(options: [String : NSObject]?, completionHandler: #escaping (Error?) -> Void) {
guard
let protocolConfiguration = protocolConfiguration as? NETunnelProviderProtocol,
let providerConfiguration = protocolConfiguration.providerConfiguration
else {
fatalError()
}
guard let ovpnFileContent: Data = providerConfiguration["ovpn"] as? Data else { return }
let configuration = OpenVPNConfiguration()
configuration.fileContent = ovpnFileContent
do {
properties = try vpnAdapter.apply(configuration: configuration)
} catch {
completionHandler(error)
return
}
configuration.tunPersist = true
if !properties.autologin {
if let username: String = providerConfiguration["username"] as? String, let password: String = providerConfiguration["password"] as? String {
let credentials = OpenVPNCredentials()
credentials.username = username
credentials.password = password
do {
try vpnAdapter.provide(credentials: credentials)
} catch {
completionHandler(error)
return
}
}
}
vpnReachability.startTracking { [weak self] status in
guard status != .notReachable else { return }
self?.vpnAdapter.reconnect(afterTimeInterval: 5)
}
startHandler = completionHandler
vpnAdapter.connect()
}
override func stopTunnel(with reason: NEProviderStopReason, completionHandler: #escaping () -> Void) {
stopHandler = completionHandler
if vpnReachability.isTracking {
vpnReachability.stopTracking()
}
vpnAdapter.disconnect()
}
override func handleAppMessage(_ messageData: Data, completionHandler: ((Data?) -> Void)?) {
if let handler = completionHandler {
handler(messageData)
}
}
override func sleep(completionHandler: #escaping () -> Void) {
completionHandler()
}
override func wake() {
}
}
extension PacketTunnelProvider: OpenVPNAdapterDelegate {
func openVPNAdapter(_ openVPNAdapter: OpenVPNAdapter, configureTunnelWithNetworkSettings networkSettings: NEPacketTunnelNetworkSettings?, completionHandler: #escaping (OpenVPNAdapterPacketFlow?) -> Void) {
setTunnelNetworkSettings(networkSettings) { (error) in
completionHandler(error == nil ? self.packetFlow : nil)
}
}
func openVPNAdapter(_ openVPNAdapter: OpenVPNAdapter, handleEvent event: OpenVPNAdapterEvent, message: String?) {
switch event {
case .connected:
if reasserting {
reasserting = false
}
guard let startHandler = startHandler else { return }
startHandler(nil)
self.startHandler = nil
case .disconnected:
guard let stopHandler = stopHandler else { return }
if vpnReachability.isTracking {
vpnReachability.stopTracking()
}
stopHandler()
self.stopHandler = nil
case .reconnecting:
reasserting = true
default:
break
}
}
func openVPNAdapter(_ openVPNAdapter: OpenVPNAdapter, handleError error: Error) {
guard let fatal = (error as NSError).userInfo[OpenVPNAdapterErrorFatalKey] as? Bool, fatal == true else {
return
}
NSLog("Error: \(error.localizedDescription)")
NSLog("Connection Info: \(vpnAdapter.connectionInformation.debugDescription)")
if vpnReachability.isTracking {
vpnReachability.stopTracking()
}
if let startHandler = startHandler {
startHandler(error)
self.startHandler = nil
} else {
cancelTunnelWithError(error)
}
}
func openVPNAdapter(_ openVPNAdapter: OpenVPNAdapter, handleLogMessage logMessage: String) {
NSLog("Log: \(logMessage)")
}
}
extension PacketTunnelProvider: OpenVPNAdapterPacketFlow {
func readPackets(completionHandler: #escaping ([Data], [NSNumber]) -> Void) {
packetFlow.readPackets(completionHandler: completionHandler)
}
func writePackets(_ packets: [Data], withProtocols protocols: [NSNumber]) -> Bool {
return packetFlow.writePackets(packets, withProtocols: protocols)
}
}
extension NEPacketTunnelFlow: OpenVPNAdapterPacketFlow {}