starting engine by passing file descriptor on engine start

iface/iface_android.go

@@ -28,14 +28,20 @@ func NewWGIFace(ifaceName string, address string, mtu int, tunAdapter TunAdapter
 	return wgIFace, nil
 }
 
-// CreateOnMobile creates a new Wireguard interface, sets a given IP and brings it up.
+// CreateOnAndroid creates a new Wireguard interface, sets a given IP and brings it up.
 // Will reuse an existing one.
-func (w *WGIface) CreateOnMobile(mIFaceArgs MobileIFaceArguments) error {
+func (w *WGIface) CreateOnAndroid(mIFaceArgs MobileIFaceArguments) error {
 	w.mu.Lock()
 	defer w.mu.Unlock()
 	return w.tun.Create(mIFaceArgs)
 }
 
+// CreateOniOS creates a new Wireguard interface, sets a given IP and brings it up.
+// Will reuse an existing one.
+func (w *WGIface) CreateOniOS(tunFd int32) error {
+	return fmt.Errorf("this function has not implemented on mobile")
+}
+
 // Create this function make sense on mobile only
 func (w *WGIface) Create() error {
 	return fmt.Errorf("this function has not implemented on mobile")

iface/iface_ios.go

@@ -0,0 +1,51 @@
+//go:build ios
+// +build ios
+
+package iface
+
+import (
+	"fmt"
+	"sync"
+
+	"github.com/pion/transport/v2"
+)
+
+// NewWGIFace Creates a new WireGuard interface instance
+func NewWGIFace(ifaceName string, address string, mtu int, tunAdapter TunAdapter, transportNet transport.Net) (*WGIface, error) {
+	wgIFace := &WGIface{
+		mu: sync.Mutex{},
+	}
+
+	wgAddress, err := parseWGAddress(address)
+	if err != nil {
+		return wgIFace, err
+	}
+
+	tun := newTunDevice(wgAddress, mtu, tunAdapter, transportNet)
+	wgIFace.tun = tun
+
+	wgIFace.configurer = newWGConfigurer(tun.name)
+
+	wgIFace.userspaceBind = !WireGuardModuleIsLoaded()
+
+	return wgIFace, nil
+}
+
+// CreateOniOS creates a new Wireguard interface, sets a given IP and brings it up.
+// Will reuse an existing one.
+func (w *WGIface) CreateOniOS(tunFd int32) error {
+	w.mu.Lock()
+	defer w.mu.Unlock()
+	return w.tun.Create(tunFd)
+}
+
+// CreateOnAndroid creates a new Wireguard interface, sets a given IP and brings it up.
+// Will reuse an existing one.
+func (w *WGIface) CreateOnAndroid(mIFaceArgs MobileIFaceArguments) error {
+	return fmt.Errorf("this function has not implemented on mobile")
+}
+
+// Create this function make sense on mobile only
+func (w *WGIface) Create() error {
+	return fmt.Errorf("this function has not implemented on mobile")
+}

iface/iface_nonandroid.go

@@ -1,4 +1,5 @@
-//go:build !android
+//go:build !android && !ios
+// +build !android,!ios
 
 package iface
 
@@ -27,8 +28,13 @@ func NewWGIFace(iFaceName string, address string, mtu int, tunAdapter TunAdapter
 	return wgIFace, nil
 }
 
-// CreateOnMobile this function make sense on mobile only
-func (w *WGIface) CreateOnMobile(mIFaceArgs MobileIFaceArguments) error {
+// CreateOnAndroid this function make sense on mobile only
+func (w *WGIface) CreateOnAndroid(mIFaceArgs MobileIFaceArguments) error {
+	return fmt.Errorf("this function has not implemented on non mobile")
+}
+
+// CreateOniOS this function make sense on mobile only
+func (w *WGIface) CreateOniOS(tunFd int32) error {
 	return fmt.Errorf("this function has not implemented on non mobile")
 }
 

iface/tun_android.go

@@ -1,3 +1,6 @@
+//go:build android
+// +build android
+
 package iface
 
 import (
@@ -55,7 +58,7 @@ func (t *tunDevice) Create(mIFaceArgs MobileIFaceArguments) error {
 	t.device = device.NewDevice(t.wrapper, t.iceBind, device.NewLogger(device.LogLevelSilent, "[wiretrustee] "))
 	// without this property mobile devices can discover remote endpoints if the configured one was wrong.
 	// this helps with support for the older NetBird clients that had a hardcoded direct mode
-	//t.device.DisableSomeRoamingForBrokenMobileSemantics()
+	// t.device.DisableSomeRoamingForBrokenMobileSemantics()
 
 	err = t.device.Up()
 	if err != nil {

iface/tun_darwin.go

@@ -1,3 +1,6 @@
+//go:build !ios
+// +build !ios
+
 package iface
 
 import (

iface/tun_ios.go

@@ -0,0 +1,105 @@
+//go:build ios
+// +build ios
+
+package iface
+
+import (
+	"os"
+	"strings"
+
+	"github.com/pion/transport/v2"
+	log "github.com/sirupsen/logrus"
+	"golang.org/x/sys/unix"
+	"golang.zx2c4.com/wireguard/device"
+	"golang.zx2c4.com/wireguard/tun"
+
+	"github.com/netbirdio/netbird/iface/bind"
+)
+
+type tunDevice struct {
+	address    WGAddress
+	mtu        int
+	tunAdapter TunAdapter
+	iceBind    *bind.ICEBind
+
+	fd      int
+	name    string
+	device  *device.Device
+	wrapper *DeviceWrapper
+}
+
+func newTunDevice(address WGAddress, mtu int, tunAdapter TunAdapter, transportNet transport.Net) *tunDevice {
+	return &tunDevice{
+		address:    address,
+		mtu:        mtu,
+		tunAdapter: tunAdapter,
+		iceBind:    bind.NewICEBind(transportNet),
+	}
+}
+
+func (t *tunDevice) Create(tunFd int32) error {
+	log.Info("create tun interface")
+
+	dupTunFd, err := unix.Dup(int(tunFd))
+	if err != nil {
+		log.Errorf("Unable to dup tun fd: %v", err)
+		return err
+	}
+
+	err = unix.SetNonblock(dupTunFd, true)
+	if err != nil {
+		log.Errorf("Unable to set tun fd as non blocking: %v", err)
+		unix.Close(dupTunFd)
+		return err
+	}
+	tun, err := tun.CreateTUNFromFile(os.NewFile(uintptr(dupTunFd), "/dev/tun"), 0)
+	if err != nil {
+		log.Errorf("Unable to create new tun device from fd: %v", err)
+		unix.Close(dupTunFd)
+		return err
+	}
+
+	t.wrapper = newDeviceWrapper(tun)
+	log.Debug("Attaching to interface")
+	t.device = device.NewDevice(t.wrapper, t.iceBind, device.NewLogger(device.LogLevelSilent, "[wiretrustee] "))
+	// without this property mobile devices can discover remote endpoints if the configured one was wrong.
+	// this helps with support for the older NetBird clients that had a hardcoded direct mode
+	// t.device.DisableSomeRoamingForBrokenMobileSemantics()
+
+	err = t.device.Up()
+	if err != nil {
+		t.device.Close()
+		return err
+	}
+	log.Debugf("device is ready to use: %s", t.name)
+	return nil
+}
+
+func (t *tunDevice) Device() *device.Device {
+	return t.device
+}
+
+func (t *tunDevice) DeviceName() string {
+	return t.name
+}
+
+func (t *tunDevice) WgAddress() WGAddress {
+	return t.address
+}
+
+func (t *tunDevice) UpdateAddr(addr WGAddress) error {
+	// todo implement
+	return nil
+}
+
+func (t *tunDevice) Close() (err error) {
+	if t.device != nil {
+		t.device.Close()
+	}
+
+	return
+}
+
+func (t *tunDevice) routesToString(routes []string) string {
+	return strings.Join(routes, ";")
+}

iface/tun_unix.go

@@ -1,4 +1,4 @@
-//go:build (linux || darwin) && !android
+//go:build (linux || darwin) && !android && !ios
 
 package iface