674 lines
31 KiB
Swift
674 lines
31 KiB
Swift
// SPDX-License-Identifier: MIT
|
|
// Copyright © 2018-2020 WireGuard LLC. All Rights Reserved.
|
|
|
|
import Foundation
|
|
import NetworkExtension
|
|
import os.log
|
|
|
|
protocol TunnelsManagerListDelegate: class {
|
|
func tunnelAdded(at index: Int)
|
|
func tunnelModified(at index: Int)
|
|
func tunnelMoved(from oldIndex: Int, to newIndex: Int)
|
|
func tunnelRemoved(at index: Int, tunnel: TunnelContainer)
|
|
}
|
|
|
|
protocol TunnelsManagerActivationDelegate: class {
|
|
func tunnelActivationAttemptFailed(tunnel: TunnelContainer, error: TunnelsManagerActivationAttemptError) // startTunnel wasn't called or failed
|
|
func tunnelActivationAttemptSucceeded(tunnel: TunnelContainer) // startTunnel succeeded
|
|
func tunnelActivationFailed(tunnel: TunnelContainer, error: TunnelsManagerActivationError) // status didn't change to connected
|
|
func tunnelActivationSucceeded(tunnel: TunnelContainer) // status changed to connected
|
|
}
|
|
|
|
class TunnelsManager {
|
|
private var tunnels: [TunnelContainer]
|
|
weak var tunnelsListDelegate: TunnelsManagerListDelegate?
|
|
weak var activationDelegate: TunnelsManagerActivationDelegate?
|
|
private var statusObservationToken: NotificationToken?
|
|
private var waiteeObservationToken: NSKeyValueObservation?
|
|
private var configurationsObservationToken: NotificationToken?
|
|
|
|
init(tunnelProviders: [NETunnelProviderManager]) {
|
|
tunnels = tunnelProviders.map { TunnelContainer(tunnel: $0) }.sorted { TunnelsManager.tunnelNameIsLessThan($0.name, $1.name) }
|
|
startObservingTunnelStatuses()
|
|
startObservingTunnelConfigurations()
|
|
}
|
|
|
|
static func create(completionHandler: @escaping (Result<TunnelsManager, TunnelsManagerError>) -> Void) {
|
|
#if targetEnvironment(simulator)
|
|
completionHandler(.success(TunnelsManager(tunnelProviders: MockTunnels.createMockTunnels())))
|
|
#else
|
|
NETunnelProviderManager.loadAllFromPreferences { managers, error in
|
|
if let error = error {
|
|
wg_log(.error, message: "Failed to load tunnel provider managers: \(error)")
|
|
completionHandler(.failure(TunnelsManagerError.systemErrorOnListingTunnels(systemError: error)))
|
|
return
|
|
}
|
|
|
|
var tunnelManagers = managers ?? []
|
|
var refs: Set<Data> = []
|
|
var tunnelNames: Set<String> = []
|
|
for (index, tunnelManager) in tunnelManagers.enumerated().reversed() {
|
|
if let tunnelName = tunnelManager.localizedDescription {
|
|
tunnelNames.insert(tunnelName)
|
|
}
|
|
guard let proto = tunnelManager.protocolConfiguration as? NETunnelProviderProtocol else { continue }
|
|
if proto.migrateConfigurationIfNeeded(called: tunnelManager.localizedDescription ?? "unknown") {
|
|
tunnelManager.saveToPreferences { _ in }
|
|
}
|
|
#if os(iOS)
|
|
let passwordRef = proto.verifyConfigurationReference() ? proto.passwordReference : nil
|
|
#elseif os(macOS)
|
|
let passwordRef: Data?
|
|
if proto.providerConfiguration?["UID"] as? uid_t == getuid() {
|
|
passwordRef = proto.verifyConfigurationReference() ? proto.passwordReference : nil
|
|
} else {
|
|
passwordRef = proto.passwordReference // To handle multiple users in macOS, we skip verifying
|
|
}
|
|
#else
|
|
#error("Unimplemented")
|
|
#endif
|
|
if let ref = passwordRef {
|
|
refs.insert(ref)
|
|
} else {
|
|
wg_log(.info, message: "Removing orphaned tunnel with non-verifying keychain entry: \(tunnelManager.localizedDescription ?? "<unknown>")")
|
|
tunnelManager.removeFromPreferences { _ in }
|
|
tunnelManagers.remove(at: index)
|
|
}
|
|
}
|
|
Keychain.deleteReferences(except: refs)
|
|
#if os(iOS)
|
|
RecentTunnelsTracker.cleanupTunnels(except: tunnelNames)
|
|
#endif
|
|
completionHandler(.success(TunnelsManager(tunnelProviders: tunnelManagers)))
|
|
}
|
|
#endif
|
|
}
|
|
|
|
func reload() {
|
|
NETunnelProviderManager.loadAllFromPreferences { [weak self] managers, _ in
|
|
guard let self = self else { return }
|
|
|
|
let loadedTunnelProviders = managers ?? []
|
|
|
|
for (index, currentTunnel) in self.tunnels.enumerated().reversed() {
|
|
if !loadedTunnelProviders.contains(where: { $0.isEquivalentTo(currentTunnel) }) {
|
|
// Tunnel was deleted outside the app
|
|
self.tunnels.remove(at: index)
|
|
self.tunnelsListDelegate?.tunnelRemoved(at: index, tunnel: currentTunnel)
|
|
}
|
|
}
|
|
for loadedTunnelProvider in loadedTunnelProviders {
|
|
if let matchingTunnel = self.tunnels.first(where: { loadedTunnelProvider.isEquivalentTo($0) }) {
|
|
matchingTunnel.tunnelProvider = loadedTunnelProvider
|
|
matchingTunnel.refreshStatus()
|
|
} else {
|
|
// Tunnel was added outside the app
|
|
if let proto = loadedTunnelProvider.protocolConfiguration as? NETunnelProviderProtocol {
|
|
if proto.migrateConfigurationIfNeeded(called: loadedTunnelProvider.localizedDescription ?? "unknown") {
|
|
loadedTunnelProvider.saveToPreferences { _ in }
|
|
}
|
|
}
|
|
let tunnel = TunnelContainer(tunnel: loadedTunnelProvider)
|
|
self.tunnels.append(tunnel)
|
|
self.tunnels.sort { TunnelsManager.tunnelNameIsLessThan($0.name, $1.name) }
|
|
self.tunnelsListDelegate?.tunnelAdded(at: self.tunnels.firstIndex(of: tunnel)!)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func add(tunnelConfiguration: TunnelConfiguration, onDemandOption: ActivateOnDemandOption = .off, completionHandler: @escaping (Result<TunnelContainer, TunnelsManagerError>) -> Void) {
|
|
let tunnelName = tunnelConfiguration.name ?? ""
|
|
if tunnelName.isEmpty {
|
|
completionHandler(.failure(TunnelsManagerError.tunnelNameEmpty))
|
|
return
|
|
}
|
|
|
|
if tunnels.contains(where: { $0.name == tunnelName }) {
|
|
completionHandler(.failure(TunnelsManagerError.tunnelAlreadyExistsWithThatName))
|
|
return
|
|
}
|
|
|
|
let tunnelProviderManager = NETunnelProviderManager()
|
|
tunnelProviderManager.setTunnelConfiguration(tunnelConfiguration)
|
|
tunnelProviderManager.isEnabled = true
|
|
|
|
onDemandOption.apply(on: tunnelProviderManager)
|
|
|
|
let activeTunnel = tunnels.first { $0.status == .active || $0.status == .activating }
|
|
|
|
tunnelProviderManager.saveToPreferences { [weak self] error in
|
|
if let error = error {
|
|
wg_log(.error, message: "Add: Saving configuration failed: \(error)")
|
|
(tunnelProviderManager.protocolConfiguration as? NETunnelProviderProtocol)?.destroyConfigurationReference()
|
|
completionHandler(.failure(TunnelsManagerError.systemErrorOnAddTunnel(systemError: error)))
|
|
return
|
|
}
|
|
|
|
guard let self = self else { return }
|
|
|
|
#if os(iOS)
|
|
// HACK: In iOS, adding a tunnel causes deactivation of any currently active tunnel.
|
|
// This is an ugly hack to reactivate the tunnel that has been deactivated like that.
|
|
if let activeTunnel = activeTunnel {
|
|
if activeTunnel.status == .inactive || activeTunnel.status == .deactivating {
|
|
self.startActivation(of: activeTunnel)
|
|
}
|
|
if activeTunnel.status == .active || activeTunnel.status == .activating {
|
|
activeTunnel.status = .restarting
|
|
}
|
|
}
|
|
#endif
|
|
|
|
let tunnel = TunnelContainer(tunnel: tunnelProviderManager)
|
|
self.tunnels.append(tunnel)
|
|
self.tunnels.sort { TunnelsManager.tunnelNameIsLessThan($0.name, $1.name) }
|
|
self.tunnelsListDelegate?.tunnelAdded(at: self.tunnels.firstIndex(of: tunnel)!)
|
|
completionHandler(.success(tunnel))
|
|
}
|
|
}
|
|
|
|
func addMultiple(tunnelConfigurations: [TunnelConfiguration], completionHandler: @escaping (UInt, TunnelsManagerError?) -> Void) {
|
|
// Temporarily pause observation of changes to VPN configurations to prevent the feedback
|
|
// loop that causes `reload()` to be called on each newly added tunnel, which significantly
|
|
// impacts performance.
|
|
configurationsObservationToken = nil
|
|
|
|
self.addMultiple(tunnelConfigurations: ArraySlice(tunnelConfigurations), numberSuccessful: 0, lastError: nil) { [weak self] numSucceeded, error in
|
|
completionHandler(numSucceeded, error)
|
|
|
|
// Restart observation of changes to VPN configrations.
|
|
self?.startObservingTunnelConfigurations()
|
|
|
|
// Force reload all configurations to make sure that all tunnels are up to date.
|
|
self?.reload()
|
|
}
|
|
}
|
|
|
|
private func addMultiple(tunnelConfigurations: ArraySlice<TunnelConfiguration>, numberSuccessful: UInt, lastError: TunnelsManagerError?, completionHandler: @escaping (UInt, TunnelsManagerError?) -> Void) {
|
|
guard let head = tunnelConfigurations.first else {
|
|
completionHandler(numberSuccessful, lastError)
|
|
return
|
|
}
|
|
let tail = tunnelConfigurations.dropFirst()
|
|
add(tunnelConfiguration: head) { [weak self, tail] result in
|
|
DispatchQueue.main.async {
|
|
var numberSuccessfulCount = numberSuccessful
|
|
var lastError: TunnelsManagerError?
|
|
switch result {
|
|
case .failure(let error):
|
|
lastError = error
|
|
case .success:
|
|
numberSuccessfulCount = numberSuccessful + 1
|
|
}
|
|
self?.addMultiple(tunnelConfigurations: tail, numberSuccessful: numberSuccessfulCount, lastError: lastError, completionHandler: completionHandler)
|
|
}
|
|
}
|
|
}
|
|
|
|
func modify(tunnel: TunnelContainer, tunnelConfiguration: TunnelConfiguration, onDemandOption: ActivateOnDemandOption, completionHandler: @escaping (TunnelsManagerError?) -> Void) {
|
|
let tunnelName = tunnelConfiguration.name ?? ""
|
|
if tunnelName.isEmpty {
|
|
completionHandler(TunnelsManagerError.tunnelNameEmpty)
|
|
return
|
|
}
|
|
|
|
let tunnelProviderManager = tunnel.tunnelProvider
|
|
let oldName = tunnelProviderManager.localizedDescription ?? ""
|
|
let isNameChanged = tunnelName != oldName
|
|
if isNameChanged {
|
|
guard !tunnels.contains(where: { $0.name == tunnelName }) else {
|
|
completionHandler(TunnelsManagerError.tunnelAlreadyExistsWithThatName)
|
|
return
|
|
}
|
|
tunnel.name = tunnelName
|
|
}
|
|
|
|
var isTunnelConfigurationChanged = false
|
|
if tunnelProviderManager.tunnelConfiguration != tunnelConfiguration {
|
|
tunnelProviderManager.setTunnelConfiguration(tunnelConfiguration)
|
|
isTunnelConfigurationChanged = true
|
|
}
|
|
tunnelProviderManager.isEnabled = true
|
|
|
|
let isActivatingOnDemand = !tunnelProviderManager.isOnDemandEnabled && onDemandOption != .off
|
|
onDemandOption.apply(on: tunnelProviderManager)
|
|
|
|
tunnelProviderManager.saveToPreferences { [weak self] error in
|
|
if let error = error {
|
|
//TODO: the passwordReference for the old one has already been removed at this point and we can't easily roll back!
|
|
wg_log(.error, message: "Modify: Saving configuration failed: \(error)")
|
|
completionHandler(TunnelsManagerError.systemErrorOnModifyTunnel(systemError: error))
|
|
return
|
|
}
|
|
guard let self = self else { return }
|
|
if isNameChanged {
|
|
let oldIndex = self.tunnels.firstIndex(of: tunnel)!
|
|
self.tunnels.sort { TunnelsManager.tunnelNameIsLessThan($0.name, $1.name) }
|
|
let newIndex = self.tunnels.firstIndex(of: tunnel)!
|
|
self.tunnelsListDelegate?.tunnelMoved(from: oldIndex, to: newIndex)
|
|
#if os(iOS)
|
|
RecentTunnelsTracker.handleTunnelRenamed(oldName: oldName, newName: tunnelName)
|
|
#endif
|
|
}
|
|
self.tunnelsListDelegate?.tunnelModified(at: self.tunnels.firstIndex(of: tunnel)!)
|
|
|
|
if isTunnelConfigurationChanged {
|
|
if tunnel.status == .active || tunnel.status == .activating || tunnel.status == .reasserting {
|
|
// Turn off the tunnel, and then turn it back on, so the changes are made effective
|
|
tunnel.status = .restarting
|
|
(tunnel.tunnelProvider.connection as? NETunnelProviderSession)?.stopTunnel()
|
|
}
|
|
}
|
|
|
|
if isActivatingOnDemand {
|
|
// Reload tunnel after saving.
|
|
// Without this, the tunnel stopes getting updates on the tunnel status from iOS.
|
|
tunnelProviderManager.loadFromPreferences { error in
|
|
tunnel.isActivateOnDemandEnabled = tunnelProviderManager.isOnDemandEnabled
|
|
if let error = error {
|
|
wg_log(.error, message: "Modify: Re-loading after saving configuration failed: \(error)")
|
|
completionHandler(TunnelsManagerError.systemErrorOnModifyTunnel(systemError: error))
|
|
} else {
|
|
completionHandler(nil)
|
|
}
|
|
}
|
|
} else {
|
|
completionHandler(nil)
|
|
}
|
|
}
|
|
}
|
|
|
|
func remove(tunnel: TunnelContainer, completionHandler: @escaping (TunnelsManagerError?) -> Void) {
|
|
let tunnelProviderManager = tunnel.tunnelProvider
|
|
#if os(macOS)
|
|
if tunnel.isTunnelAvailableToUser {
|
|
(tunnelProviderManager.protocolConfiguration as? NETunnelProviderProtocol)?.destroyConfigurationReference()
|
|
}
|
|
#elseif os(iOS)
|
|
(tunnelProviderManager.protocolConfiguration as? NETunnelProviderProtocol)?.destroyConfigurationReference()
|
|
#else
|
|
#error("Unimplemented")
|
|
#endif
|
|
tunnelProviderManager.removeFromPreferences { [weak self] error in
|
|
if let error = error {
|
|
wg_log(.error, message: "Remove: Saving configuration failed: \(error)")
|
|
completionHandler(TunnelsManagerError.systemErrorOnRemoveTunnel(systemError: error))
|
|
return
|
|
}
|
|
if let self = self, let index = self.tunnels.firstIndex(of: tunnel) {
|
|
self.tunnels.remove(at: index)
|
|
self.tunnelsListDelegate?.tunnelRemoved(at: index, tunnel: tunnel)
|
|
}
|
|
completionHandler(nil)
|
|
|
|
#if os(iOS)
|
|
RecentTunnelsTracker.handleTunnelRemoved(tunnelName: tunnel.name)
|
|
#endif
|
|
}
|
|
}
|
|
|
|
func removeMultiple(tunnels: [TunnelContainer], completionHandler: @escaping (TunnelsManagerError?) -> Void) {
|
|
// Temporarily pause observation of changes to VPN configurations to prevent the feedback
|
|
// loop that causes `reload()` to be called for each removed tunnel, which significantly
|
|
// impacts performance.
|
|
configurationsObservationToken = nil
|
|
|
|
removeMultiple(tunnels: ArraySlice(tunnels)) { [weak self] error in
|
|
completionHandler(error)
|
|
|
|
// Restart observation of changes to VPN configrations.
|
|
self?.startObservingTunnelConfigurations()
|
|
|
|
// Force reload all configurations to make sure that all tunnels are up to date.
|
|
self?.reload()
|
|
}
|
|
}
|
|
|
|
private func removeMultiple(tunnels: ArraySlice<TunnelContainer>, completionHandler: @escaping (TunnelsManagerError?) -> Void) {
|
|
guard let head = tunnels.first else {
|
|
completionHandler(nil)
|
|
return
|
|
}
|
|
let tail = tunnels.dropFirst()
|
|
remove(tunnel: head) { [weak self, tail] error in
|
|
DispatchQueue.main.async {
|
|
if let error = error {
|
|
completionHandler(error)
|
|
} else {
|
|
self?.removeMultiple(tunnels: tail, completionHandler: completionHandler)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func numberOfTunnels() -> Int {
|
|
return tunnels.count
|
|
}
|
|
|
|
func tunnel(at index: Int) -> TunnelContainer {
|
|
return tunnels[index]
|
|
}
|
|
|
|
func mapTunnels<T>(transform: (TunnelContainer) throws -> T) rethrows -> [T] {
|
|
return try tunnels.map(transform)
|
|
}
|
|
|
|
func index(of tunnel: TunnelContainer) -> Int? {
|
|
return tunnels.firstIndex(of: tunnel)
|
|
}
|
|
|
|
func tunnel(named tunnelName: String) -> TunnelContainer? {
|
|
return tunnels.first { $0.name == tunnelName }
|
|
}
|
|
|
|
func waitingTunnel() -> TunnelContainer? {
|
|
return tunnels.first { $0.status == .waiting }
|
|
}
|
|
|
|
func tunnelInOperation() -> TunnelContainer? {
|
|
if let waitingTunnelObject = waitingTunnel() {
|
|
return waitingTunnelObject
|
|
}
|
|
return tunnels.first { $0.status != .inactive }
|
|
}
|
|
|
|
func startActivation(of tunnel: TunnelContainer) {
|
|
guard tunnels.contains(tunnel) else { return } // Ensure it's not deleted
|
|
guard tunnel.status == .inactive else {
|
|
activationDelegate?.tunnelActivationAttemptFailed(tunnel: tunnel, error: .tunnelIsNotInactive)
|
|
return
|
|
}
|
|
|
|
if let alreadyWaitingTunnel = tunnels.first(where: { $0.status == .waiting }) {
|
|
alreadyWaitingTunnel.status = .inactive
|
|
}
|
|
|
|
if let tunnelInOperation = tunnels.first(where: { $0.status != .inactive }) {
|
|
wg_log(.info, message: "Tunnel '\(tunnel.name)' waiting for deactivation of '\(tunnelInOperation.name)'")
|
|
tunnel.status = .waiting
|
|
activateWaitingTunnelOnDeactivation(of: tunnelInOperation)
|
|
if tunnelInOperation.status != .deactivating {
|
|
startDeactivation(of: tunnelInOperation)
|
|
}
|
|
return
|
|
}
|
|
|
|
#if targetEnvironment(simulator)
|
|
tunnel.status = .active
|
|
#else
|
|
tunnel.startActivation(activationDelegate: activationDelegate)
|
|
#endif
|
|
|
|
#if os(iOS)
|
|
RecentTunnelsTracker.handleTunnelActivated(tunnelName: tunnel.name)
|
|
#endif
|
|
}
|
|
|
|
func startDeactivation(of tunnel: TunnelContainer) {
|
|
tunnel.isAttemptingActivation = false
|
|
guard tunnel.status != .inactive && tunnel.status != .deactivating else { return }
|
|
#if targetEnvironment(simulator)
|
|
tunnel.status = .inactive
|
|
#else
|
|
tunnel.startDeactivation()
|
|
#endif
|
|
}
|
|
|
|
func refreshStatuses() {
|
|
tunnels.forEach { $0.refreshStatus() }
|
|
}
|
|
|
|
private func activateWaitingTunnelOnDeactivation(of tunnel: TunnelContainer) {
|
|
waiteeObservationToken = tunnel.observe(\.status) { [weak self] tunnel, _ in
|
|
guard let self = self else { return }
|
|
if tunnel.status == .inactive {
|
|
if let waitingTunnel = self.tunnels.first(where: { $0.status == .waiting }) {
|
|
waitingTunnel.startActivation(activationDelegate: self.activationDelegate)
|
|
}
|
|
self.waiteeObservationToken = nil
|
|
}
|
|
}
|
|
}
|
|
|
|
private func startObservingTunnelStatuses() {
|
|
statusObservationToken = NotificationCenter.default.observe(name: .NEVPNStatusDidChange, object: nil, queue: OperationQueue.main) { [weak self] statusChangeNotification in
|
|
guard let self = self,
|
|
let session = statusChangeNotification.object as? NETunnelProviderSession,
|
|
let tunnelProvider = session.manager as? NETunnelProviderManager,
|
|
let tunnel = self.tunnels.first(where: { $0.tunnelProvider == tunnelProvider }) else { return }
|
|
|
|
wg_log(.debug, message: "Tunnel '\(tunnel.name)' connection status changed to '\(tunnel.tunnelProvider.connection.status)'")
|
|
|
|
if tunnel.isAttemptingActivation {
|
|
if session.status == .connected {
|
|
tunnel.isAttemptingActivation = false
|
|
self.activationDelegate?.tunnelActivationSucceeded(tunnel: tunnel)
|
|
} else if session.status == .disconnected {
|
|
tunnel.isAttemptingActivation = false
|
|
if let (title, message) = lastErrorTextFromNetworkExtension(for: tunnel) {
|
|
self.activationDelegate?.tunnelActivationFailed(tunnel: tunnel, error: .activationFailedWithExtensionError(title: title, message: message, wasOnDemandEnabled: tunnelProvider.isOnDemandEnabled))
|
|
} else {
|
|
self.activationDelegate?.tunnelActivationFailed(tunnel: tunnel, error: .activationFailed(wasOnDemandEnabled: tunnelProvider.isOnDemandEnabled))
|
|
}
|
|
}
|
|
}
|
|
|
|
if tunnel.status == .restarting && session.status == .disconnected {
|
|
tunnel.startActivation(activationDelegate: self.activationDelegate)
|
|
return
|
|
}
|
|
|
|
tunnel.refreshStatus()
|
|
}
|
|
}
|
|
|
|
func startObservingTunnelConfigurations() {
|
|
configurationsObservationToken = NotificationCenter.default.observe(name: .NEVPNConfigurationChange, object: nil, queue: OperationQueue.main) { [weak self] _ in
|
|
DispatchQueue.main.async { [weak self] in
|
|
// We schedule reload() in a subsequent runloop to ensure that the completion handler of loadAllFromPreferences
|
|
// (reload() calls loadAllFromPreferences) is called after the completion handler of the saveToPreferences or
|
|
// removeFromPreferences call, if any, that caused this notification to fire. This notification can also fire
|
|
// as a result of a tunnel getting added or removed outside of the app.
|
|
self?.reload()
|
|
}
|
|
}
|
|
}
|
|
|
|
static func tunnelNameIsLessThan(_ lhs: String, _ rhs: String) -> Bool {
|
|
return lhs.compare(rhs, options: [.caseInsensitive, .diacriticInsensitive, .widthInsensitive, .numeric]) == .orderedAscending
|
|
}
|
|
}
|
|
|
|
private func lastErrorTextFromNetworkExtension(for tunnel: TunnelContainer) -> (title: String, message: String)? {
|
|
guard let lastErrorFileURL = FileManager.networkExtensionLastErrorFileURL else { return nil }
|
|
guard let lastErrorData = try? Data(contentsOf: lastErrorFileURL) else { return nil }
|
|
guard let lastErrorStrings = String(data: lastErrorData, encoding: .utf8)?.splitToArray(separator: "\n") else { return nil }
|
|
guard lastErrorStrings.count == 2 && tunnel.activationAttemptId == lastErrorStrings[0] else { return nil }
|
|
|
|
if let extensionError = PacketTunnelProviderError(rawValue: lastErrorStrings[1]) {
|
|
return extensionError.alertText
|
|
}
|
|
|
|
return (tr("alertTunnelActivationFailureTitle"), tr("alertTunnelActivationFailureMessage"))
|
|
}
|
|
|
|
class TunnelContainer: NSObject {
|
|
@objc dynamic var name: String
|
|
@objc dynamic var status: TunnelStatus
|
|
|
|
@objc dynamic var isActivateOnDemandEnabled: Bool
|
|
|
|
var isAttemptingActivation = false {
|
|
didSet {
|
|
if isAttemptingActivation {
|
|
self.activationTimer?.invalidate()
|
|
let activationTimer = Timer(timeInterval: 5 /* seconds */, repeats: true) { [weak self] _ in
|
|
guard let self = self else { return }
|
|
wg_log(.debug, message: "Status update notification timeout for tunnel '\(self.name)'. Tunnel status is now '\(self.tunnelProvider.connection.status)'.")
|
|
switch self.tunnelProvider.connection.status {
|
|
case .connected, .disconnected, .invalid:
|
|
self.activationTimer?.invalidate()
|
|
self.activationTimer = nil
|
|
default:
|
|
break
|
|
}
|
|
self.refreshStatus()
|
|
}
|
|
self.activationTimer = activationTimer
|
|
RunLoop.main.add(activationTimer, forMode: .common)
|
|
}
|
|
}
|
|
}
|
|
var activationAttemptId: String?
|
|
var activationTimer: Timer?
|
|
var deactivationTimer: Timer?
|
|
|
|
fileprivate var tunnelProvider: NETunnelProviderManager
|
|
|
|
var tunnelConfiguration: TunnelConfiguration? {
|
|
return tunnelProvider.tunnelConfiguration
|
|
}
|
|
|
|
var onDemandOption: ActivateOnDemandOption {
|
|
return ActivateOnDemandOption(from: tunnelProvider)
|
|
}
|
|
|
|
#if os(macOS)
|
|
var isTunnelAvailableToUser: Bool {
|
|
return (tunnelProvider.protocolConfiguration as? NETunnelProviderProtocol)?.providerConfiguration?["UID"] as? uid_t == getuid()
|
|
}
|
|
#endif
|
|
|
|
init(tunnel: NETunnelProviderManager) {
|
|
name = tunnel.localizedDescription ?? "Unnamed"
|
|
let status = TunnelStatus(from: tunnel.connection.status)
|
|
self.status = status
|
|
isActivateOnDemandEnabled = tunnel.isOnDemandEnabled
|
|
tunnelProvider = tunnel
|
|
super.init()
|
|
}
|
|
|
|
func getRuntimeTunnelConfiguration(completionHandler: @escaping ((TunnelConfiguration?) -> Void)) {
|
|
guard status != .inactive, let session = tunnelProvider.connection as? NETunnelProviderSession else {
|
|
completionHandler(tunnelConfiguration)
|
|
return
|
|
}
|
|
guard nil != (try? session.sendProviderMessage(Data([ UInt8(0) ]), responseHandler: {
|
|
guard self.status != .inactive, let data = $0, let base = self.tunnelConfiguration, let settings = String(data: data, encoding: .utf8) else {
|
|
completionHandler(self.tunnelConfiguration)
|
|
return
|
|
}
|
|
completionHandler((try? TunnelConfiguration(fromUapiConfig: settings, basedOn: base)) ?? self.tunnelConfiguration)
|
|
})) else {
|
|
completionHandler(tunnelConfiguration)
|
|
return
|
|
}
|
|
}
|
|
|
|
func refreshStatus() {
|
|
if status == .restarting {
|
|
return
|
|
}
|
|
status = TunnelStatus(from: tunnelProvider.connection.status)
|
|
isActivateOnDemandEnabled = tunnelProvider.isOnDemandEnabled
|
|
}
|
|
|
|
fileprivate func startActivation(recursionCount: UInt = 0, lastError: Error? = nil, activationDelegate: TunnelsManagerActivationDelegate?) {
|
|
if recursionCount >= 8 {
|
|
wg_log(.error, message: "startActivation: Failed after 8 attempts. Giving up with \(lastError!)")
|
|
activationDelegate?.tunnelActivationAttemptFailed(tunnel: self, error: .failedBecauseOfTooManyErrors(lastSystemError: lastError!))
|
|
return
|
|
}
|
|
|
|
wg_log(.debug, message: "startActivation: Entering (tunnel: \(name))")
|
|
|
|
status = .activating // Ensure that no other tunnel can attempt activation until this tunnel is done trying
|
|
|
|
guard tunnelProvider.isEnabled else {
|
|
// In case the tunnel had gotten disabled, re-enable and save it,
|
|
// then call this function again.
|
|
wg_log(.debug, staticMessage: "startActivation: Tunnel is disabled. Re-enabling and saving")
|
|
tunnelProvider.isEnabled = true
|
|
tunnelProvider.saveToPreferences { [weak self] error in
|
|
guard let self = self else { return }
|
|
if error != nil {
|
|
wg_log(.error, message: "Error saving tunnel after re-enabling: \(error!)")
|
|
activationDelegate?.tunnelActivationAttemptFailed(tunnel: self, error: .failedWhileSaving(systemError: error!))
|
|
return
|
|
}
|
|
wg_log(.debug, staticMessage: "startActivation: Tunnel saved after re-enabling, invoking startActivation")
|
|
self.startActivation(recursionCount: recursionCount + 1, lastError: NEVPNError(NEVPNError.configurationUnknown), activationDelegate: activationDelegate)
|
|
}
|
|
return
|
|
}
|
|
|
|
// Start the tunnel
|
|
do {
|
|
wg_log(.debug, staticMessage: "startActivation: Starting tunnel")
|
|
isAttemptingActivation = true
|
|
let activationAttemptId = UUID().uuidString
|
|
self.activationAttemptId = activationAttemptId
|
|
try (tunnelProvider.connection as? NETunnelProviderSession)?.startTunnel(options: ["activationAttemptId": activationAttemptId])
|
|
wg_log(.debug, staticMessage: "startActivation: Success")
|
|
activationDelegate?.tunnelActivationAttemptSucceeded(tunnel: self)
|
|
} catch let error {
|
|
isAttemptingActivation = false
|
|
guard let systemError = error as? NEVPNError else {
|
|
wg_log(.error, message: "Failed to activate tunnel: Error: \(error)")
|
|
status = .inactive
|
|
activationDelegate?.tunnelActivationAttemptFailed(tunnel: self, error: .failedWhileStarting(systemError: error))
|
|
return
|
|
}
|
|
guard systemError.code == NEVPNError.configurationInvalid || systemError.code == NEVPNError.configurationStale else {
|
|
wg_log(.error, message: "Failed to activate tunnel: VPN Error: \(error)")
|
|
status = .inactive
|
|
activationDelegate?.tunnelActivationAttemptFailed(tunnel: self, error: .failedWhileStarting(systemError: systemError))
|
|
return
|
|
}
|
|
wg_log(.debug, staticMessage: "startActivation: Will reload tunnel and then try to start it.")
|
|
tunnelProvider.loadFromPreferences { [weak self] error in
|
|
guard let self = self else { return }
|
|
if error != nil {
|
|
wg_log(.error, message: "startActivation: Error reloading tunnel: \(error!)")
|
|
self.status = .inactive
|
|
activationDelegate?.tunnelActivationAttemptFailed(tunnel: self, error: .failedWhileLoading(systemError: systemError))
|
|
return
|
|
}
|
|
wg_log(.debug, staticMessage: "startActivation: Tunnel reloaded, invoking startActivation")
|
|
self.startActivation(recursionCount: recursionCount + 1, lastError: systemError, activationDelegate: activationDelegate)
|
|
}
|
|
}
|
|
}
|
|
|
|
fileprivate func startDeactivation() {
|
|
wg_log(.debug, message: "startDeactivation: Tunnel: \(name)")
|
|
(tunnelProvider.connection as? NETunnelProviderSession)?.stopTunnel()
|
|
}
|
|
}
|
|
|
|
extension NETunnelProviderManager {
|
|
private static var cachedConfigKey: UInt8 = 0
|
|
|
|
var tunnelConfiguration: TunnelConfiguration? {
|
|
if let cached = objc_getAssociatedObject(self, &NETunnelProviderManager.cachedConfigKey) as? TunnelConfiguration {
|
|
return cached
|
|
}
|
|
let config = (protocolConfiguration as? NETunnelProviderProtocol)?.asTunnelConfiguration(called: localizedDescription)
|
|
if config != nil {
|
|
objc_setAssociatedObject(self, &NETunnelProviderManager.cachedConfigKey, config, objc_AssociationPolicy.OBJC_ASSOCIATION_RETAIN_NONATOMIC)
|
|
}
|
|
return config
|
|
}
|
|
|
|
func setTunnelConfiguration(_ tunnelConfiguration: TunnelConfiguration) {
|
|
protocolConfiguration = NETunnelProviderProtocol(tunnelConfiguration: tunnelConfiguration, previouslyFrom: protocolConfiguration)
|
|
localizedDescription = tunnelConfiguration.name
|
|
objc_setAssociatedObject(self, &NETunnelProviderManager.cachedConfigKey, tunnelConfiguration, objc_AssociationPolicy.OBJC_ASSOCIATION_RETAIN_NONATOMIC)
|
|
}
|
|
|
|
func isEquivalentTo(_ tunnel: TunnelContainer) -> Bool {
|
|
return localizedDescription == tunnel.name && tunnelConfiguration == tunnel.tunnelConfiguration
|
|
}
|
|
}
|