netbird/iface/tun_ios.go

106 lines
2.3 KiB
Go

//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, ";")
}