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wireguard-apple
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VPN: Adding, modifying and deleting actual NETunnelProviderManager instances 

Signed-off-by: Roopesh Chander <roop@roopc.net>
This commit is contained in:
Roopesh Chander 2018-10-25 15:50:27 +05:30
parent ff7adb8bc8
commit c8fba951ad
4 changed files with 157 additions and 46 deletions
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4
WireGuard/WireGuard/UI/iOS/TunnelDetailTableViewController.swift
View File

@ -25,7 +25,7 @@ class TunnelDetailTableViewController: UITableViewController {
init(tunnelsManager tm: TunnelsManager, tunnel t: TunnelContainer) {
tunnelsManager = tm
tunnel = t
tunnelViewModel = TunnelViewModel(tunnelConfiguration: t.tunnelConfiguration)
tunnelViewModel = TunnelViewModel(tunnelConfiguration: t.tunnelConfiguration())
super.init(style: .grouped)
}
@ -56,7 +56,7 @@ class TunnelDetailTableViewController: UITableViewController {
extension TunnelDetailTableViewController: TunnelEditTableViewControllerDelegate {
func tunnelSaved(tunnel: TunnelContainer) {
tunnelViewModel = TunnelViewModel(tunnelConfiguration: tunnel.tunnelConfiguration)
tunnelViewModel = TunnelViewModel(tunnelConfiguration: tunnel.tunnelConfiguration())
self.tableView.reloadData()
}
func tunnelEditingCancelled() {

6
WireGuard/WireGuard/UI/iOS/TunnelEditTableViewController.swift
View File

@ -34,7 +34,7 @@ class TunnelEditTableViewController: UITableViewController {
// Use this initializer to edit an existing tunnel.
tunnelsManager = tm
tunnel = t
tunnelViewModel = TunnelViewModel(tunnelConfiguration: t.tunnelConfiguration)
tunnelViewModel = TunnelViewModel(tunnelConfiguration: t.tunnelConfiguration())
super.init(style: .grouped)
}
@ -92,7 +92,9 @@ class TunnelEditTableViewController: UITableViewController {
self?.showErrorAlert(title: "Could not save", message: "Internal error")
} else {
self?.dismiss(animated: true, completion: nil)
self?.delegate?.tunnelSaved(tunnel: tunnel)
if let tunnel = tunnel {
self?.delegate?.tunnelSaved(tunnel: tunnel)
}
}
}
}

12
WireGuard/WireGuard/UI/iOS/TunnelsListTableViewController.swift
View File

@ -165,8 +165,16 @@ extension TunnelsListTableViewController {
// MARK: TunnelsManagerDelegate
extension TunnelsListTableViewController: TunnelsManagerDelegate {
func tunnelsAdded(atIndex index: Int, numberOfTunnels: Int) {
self.tableView.insertRows(at: [IndexPath(row: index, section: 0)], with: .automatic)
func tunnelAdded(at index: Int) {
tableView.insertRows(at: [IndexPath(row: index, section: 0)], with: .automatic)
}
func tunnelModified(at index: Int) {
tableView.reloadRows(at: [IndexPath(row: index, section: 0)], with: .automatic)
}
func tunnelsChanged() {
tableView.reloadData()
}
}

181
WireGuard/WireGuard/VPN/TunnelsManager.swift
View File

@ -2,32 +2,26 @@
// Copyright © 2018 WireGuard LLC. All rights reserved.
import Foundation
class TunnelProviderManager {
// Mock of NETunnelProviderManager
var name: String
fileprivate var tunnelConfiguration: TunnelConfiguration
init(tunnelConfiguration: TunnelConfiguration) {
self.name = tunnelConfiguration.interface.name
self.tunnelConfiguration = tunnelConfiguration
}
}
import NetworkExtension
import os.log
class TunnelContainer {
var name: String { return tunnelProvider.name }
let tunnelProvider: TunnelProviderManager
var tunnelConfiguration: TunnelConfiguration {
get { return tunnelProvider.tunnelConfiguration }
}
var index: Int
init(tunnel: TunnelProviderManager, index: Int) {
var name: String { return tunnelProvider.localizedDescription ?? "" }
fileprivate let tunnelProvider: NETunnelProviderManager
fileprivate var index: Int
init(tunnel: NETunnelProviderManager, index: Int) {
self.tunnelProvider = tunnel
self.index = index
}
func tunnelConfiguration() -> TunnelConfiguration? {
return (tunnelProvider.protocolConfiguration as! NETunnelProviderProtocol).tunnelConfiguration()
}
}
protocol TunnelsManagerDelegate: class {
func tunnelsAdded(atIndex: Int, numberOfTunnels: Int)
func tunnelAdded(at: Int)
func tunnelModified(at: Int)
func tunnelsChanged()
}
class TunnelsManager {
@ -35,46 +29,129 @@ class TunnelsManager {
var tunnels: [TunnelContainer]
weak var delegate: TunnelsManagerDelegate? = nil
private var isAddingTunnel: Bool = false
private var isModifyingTunnel: Bool = false
private var isDeletingTunnel: Bool = false
enum TunnelsManagerError: Error {
case tunnelsUninitialized
}
init(tunnelProviders: [TunnelProviderManager]) {
var tunnels: [TunnelContainer] = []
for (i, tunnelProvider) in tunnelProviders.enumerated() {
let tunnel = TunnelContainer(tunnel: tunnelProvider, index: i)
tunnels.append(tunnel)
init(tunnelProviders: [NETunnelProviderManager]) {
var tunnels = tunnelProviders.map { TunnelContainer(tunnel: $0, index: 0) }
tunnels.sort { $0.name < $1.name }
for i in 0 ..< tunnels.count {
tunnels[i].index = i
}
self.tunnels = tunnels
}
static func create(completionHandler: (TunnelsManager?) -> Void) {
completionHandler(TunnelsManager(tunnelProviders: []))
static func create(completionHandler: @escaping (TunnelsManager?) -> Void) {
NETunnelProviderManager.loadAllFromPreferences { (managers, error) in
if let error = error {
os_log("Failed to load tunnel provider managers %{public}@", log: OSLog.default, type: .debug, "\(error)")
return
}
completionHandler(TunnelsManager(tunnelProviders: managers ?? []))
}
}
func add(tunnelConfiguration: TunnelConfiguration, completionHandler: @escaping (TunnelContainer, Error?) -> Void) {
assert(!tunnelConfiguration.interface.name.isEmpty)
let tunnelProvider = TunnelProviderManager(tunnelConfiguration: tunnelConfiguration)
for tunnel in tunnels {
tunnel.index = tunnel.index + 1
private func insertionIndexFor(tunnelName: String) -> Int {
// Wishlist: Use binary search instead
for i in 0 ..< tunnels.count {
if (tunnelName.lexicographicallyPrecedes(tunnels[i].name)) { return i }
}
return tunnels.count
}
func add(tunnelConfiguration: TunnelConfiguration, completionHandler: @escaping (TunnelContainer?, Error?) -> Void) {
let tunnelName = tunnelConfiguration.interface.name
assert(!tunnelName.isEmpty)
isAddingTunnel = true
let tunnelProviderManager = NETunnelProviderManager()
tunnelProviderManager.protocolConfiguration = NETunnelProviderProtocol(tunnelConfiguration: tunnelConfiguration)
tunnelProviderManager.localizedDescription = tunnelName
tunnelProviderManager.isEnabled = true
tunnelProviderManager.saveToPreferences { [weak self] (error) in
defer { self?.isAddingTunnel = false }
guard (error == nil) else {
completionHandler(nil, error)
return
}
if let s = self {
let index = s.insertionIndexFor(tunnelName: tunnelName)
let tunnel = TunnelContainer(tunnel: tunnelProviderManager, index: index)
for i in index ..< s.tunnels.count {
s.tunnels[i].index = s.tunnels[i].index + 1
}
s.tunnels.insert(tunnel, at: index)
s.delegate?.tunnelAdded(at: index)
completionHandler(tunnel, nil)
}
}
let tunnel = TunnelContainer(tunnel: tunnelProvider, index: 0)
tunnels.insert(tunnel, at: 0)
delegate?.tunnelsAdded(atIndex: 0, numberOfTunnels: 1)
completionHandler(tunnel, nil)
}
func modify(tunnel: TunnelContainer, with tunnelConfiguration: TunnelConfiguration, completionHandler: @escaping (Error?) -> Void) {
tunnel.tunnelProvider.tunnelConfiguration = tunnelConfiguration
completionHandler(nil)
let tunnelName = tunnelConfiguration.interface.name
assert(!tunnelName.isEmpty)
isModifyingTunnel = true
let tunnelProviderManager = tunnel.tunnelProvider
let isNameChanged = (tunnelName != tunnelProviderManager.localizedDescription)
tunnelProviderManager.protocolConfiguration = NETunnelProviderProtocol(tunnelConfiguration: tunnelConfiguration)
tunnelProviderManager.localizedDescription = tunnelName
tunnelProviderManager.isEnabled = true
tunnelProviderManager.saveToPreferences { [weak self] (error) in
defer { self?.isModifyingTunnel = false }
guard (error != nil) else {
completionHandler(error)
return
}
if let s = self {
if (isNameChanged) {
s.tunnels.remove(at: tunnel.index)
for i in tunnel.index ..< s.tunnels.count {
s.tunnels[i].index = s.tunnels[i].index - 1
}
let index = s.insertionIndexFor(tunnelName: tunnelName)
tunnel.index = index
for i in index ..< s.tunnels.count {
s.tunnels[i].index = s.tunnels[i].index + 1
}
s.tunnels.insert(tunnel, at: index)
s.delegate?.tunnelsChanged()
} else {
s.delegate?.tunnelModified(at: tunnel.index)
}
completionHandler(nil)
}
}
}
func remove(tunnel: TunnelContainer, completionHandler: @escaping (Error?) -> Void) {
for i in ((tunnel.index + 1) ..< tunnels.count) {
tunnels[i].index = tunnels[i].index + 1
let tunnelProviderManager = tunnel.tunnelProvider
let tunnelIndex = tunnel.index
isDeletingTunnel = true
tunnelProviderManager.removeFromPreferences { [weak self] (error) in
defer { self?.isDeletingTunnel = false }
guard (error != nil) else {
completionHandler(error)
return
}
if let s = self {
for i in ((tunnelIndex + 1) ..< s.tunnels.count) {
s.tunnels[i].index = s.tunnels[i].index + 1
}
s.tunnels.remove(at: tunnelIndex)
}
completionHandler(nil)
}
tunnels.remove(at: tunnel.index)
completionHandler(nil)
}
func numberOfTunnels() -> Int {
@ -85,3 +162,27 @@ class TunnelsManager {
return tunnels[index]
}
}
extension NETunnelProviderProtocol {
convenience init?(tunnelConfiguration: TunnelConfiguration) {
assert(!tunnelConfiguration.interface.name.isEmpty)
guard let serializedTunnelConfiguration = try? JSONEncoder().encode(tunnelConfiguration) else { return nil }
self.init()
let appId = Bundle.main.bundleIdentifier!
let firstValidEndpoint = tunnelConfiguration.peers.first(where: { $0.endpoint != nil })?.endpoint
providerBundleIdentifier = "\(appId).WireGuardNetworkExtension"
providerConfiguration = [
"tunnelConfiguration": serializedTunnelConfiguration
]
serverAddress = firstValidEndpoint?.stringRepresentation() ?? "Unspecified"
username = tunnelConfiguration.interface.name
}
func tunnelConfiguration() -> TunnelConfiguration? {
guard let serializedTunnelConfiguration = providerConfiguration?["tunnelConfiguration"] as? Data else { return nil }
return try? JSONDecoder().decode(TunnelConfiguration.self, from: serializedTunnelConfiguration)
}
}