// // PacketTunnelProvider.swift // WireGuardNetworkExtension // // Created by Jeroen Leenarts on 19-06-18. // Copyright © 2018 Jason A. Donenfeld . All rights reserved. // import NetworkExtension import os.log enum PacketTunnelProviderError: Error { case tunnelSetupFailed } /// A packet tunnel provider object. class PacketTunnelProvider: NEPacketTunnelProvider { // MARK: Properties /// A reference to the WireGuard wrapper object. let wireGuardWrapper = WireGuardGoWrapper() // MARK: NEPacketTunnelProvider /// Begin the process of establishing the tunnel. override func startTunnel(options: [String: NSObject]?, completionHandler: @escaping (Error?) -> Void) { os_log("Starting tunnel", log: Log.general, type: .info) //TODO tunnel settings if wireGuardWrapper.turnOn(withInterfaceName: "test", settingsString: "") { // Success // completionHandler(nil) //TODO obtain network config from WireGuard config or remote. // route all traffic to VPN let defaultRoute = NEIPv4Route.default() // defaultRoute.gatewayAddress = gateway let ipv4Settings = NEIPv4Settings(addresses: ["149.248.160.60"], subnetMasks: ["255.255.255.255"]) ipv4Settings.includedRoutes = [defaultRoute] ipv4Settings.excludedRoutes = [] // let dnsSettings = NEDNSSettings(servers: dnsServers) let newSettings = NEPacketTunnelNetworkSettings(tunnelRemoteAddress: "149.248.160.60") newSettings.ipv4Settings = ipv4Settings // newSettings.dnsSettings = dnsSettings // newSettings.mtu = cfg.mtu setTunnelNetworkSettings(newSettings, completionHandler: completionHandler) } else { completionHandler(PacketTunnelProviderError.tunnelSetupFailed) } } /// Begin the process of stopping the tunnel. override func stopTunnel(with reason: NEProviderStopReason, completionHandler: @escaping () -> Void) { os_log("Stopping tunnel", log: Log.general, type: .info) wireGuardWrapper.turnOff() completionHandler() } /// Handle IPC messages from the app. override func handleAppMessage(_ messageData: Data, completionHandler: ((Data?) -> Void)?) { guard let messageString = NSString(data: messageData, encoding: String.Encoding.utf8.rawValue) else { completionHandler?(nil) return } os_log("Got a message from the app: %s", log: Log.general, type: .info, messageString) let responseData = "Hello app".data(using: String.Encoding.utf8) completionHandler?(responseData) } }