mirror of
https://github.com/netbirdio/netbird.git
synced 2024-12-11 17:31:12 +01:00
142 lines
3.3 KiB
Go
142 lines
3.3 KiB
Go
//go:build !ios
|
|
|
|
package device
|
|
|
|
import (
|
|
"fmt"
|
|
"os/exec"
|
|
|
|
"github.com/pion/transport/v3"
|
|
log "github.com/sirupsen/logrus"
|
|
"golang.zx2c4.com/wireguard/device"
|
|
"golang.zx2c4.com/wireguard/tun"
|
|
|
|
"github.com/netbirdio/netbird/client/iface/bind"
|
|
"github.com/netbirdio/netbird/client/iface/configurer"
|
|
)
|
|
|
|
type TunDevice struct {
|
|
name string
|
|
address WGAddress
|
|
port int
|
|
key string
|
|
mtu int
|
|
iceBind *bind.ICEBind
|
|
|
|
device *device.Device
|
|
filteredDevice *FilteredDevice
|
|
udpMux *bind.UniversalUDPMuxDefault
|
|
configurer WGConfigurer
|
|
}
|
|
|
|
func NewTunDevice(name string, address WGAddress, port int, key string, mtu int, transportNet transport.Net, filterFn bind.FilterFn) *TunDevice {
|
|
return &TunDevice{
|
|
name: name,
|
|
address: address,
|
|
port: port,
|
|
key: key,
|
|
mtu: mtu,
|
|
iceBind: bind.NewICEBind(transportNet, filterFn),
|
|
}
|
|
}
|
|
|
|
func (t *TunDevice) Create() (WGConfigurer, error) {
|
|
tunDevice, err := tun.CreateTUN(t.name, t.mtu)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("error creating tun device: %s", err)
|
|
}
|
|
t.filteredDevice = newDeviceFilter(tunDevice)
|
|
|
|
// We need to create a wireguard-go device and listen to configuration requests
|
|
t.device = device.NewDevice(
|
|
t.filteredDevice,
|
|
t.iceBind,
|
|
device.NewLogger(wgLogLevel(), "[netbird] "),
|
|
)
|
|
|
|
err = t.assignAddr()
|
|
if err != nil {
|
|
t.device.Close()
|
|
return nil, fmt.Errorf("error assigning ip: %s", err)
|
|
}
|
|
|
|
t.configurer = configurer.NewUSPConfigurer(t.device, t.name)
|
|
err = t.configurer.ConfigureInterface(t.key, t.port)
|
|
if err != nil {
|
|
t.device.Close()
|
|
t.configurer.Close()
|
|
return nil, fmt.Errorf("error configuring interface: %s", err)
|
|
}
|
|
return t.configurer, nil
|
|
}
|
|
|
|
func (t *TunDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
|
|
err := t.device.Up()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
udpMux, err := t.iceBind.GetICEMux()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
t.udpMux = udpMux
|
|
log.Debugf("device is ready to use: %s", t.name)
|
|
return udpMux, nil
|
|
}
|
|
|
|
func (t *TunDevice) UpdateAddr(address WGAddress) error {
|
|
t.address = address
|
|
return t.assignAddr()
|
|
}
|
|
|
|
func (t *TunDevice) Close() error {
|
|
if t.configurer != nil {
|
|
t.configurer.Close()
|
|
}
|
|
|
|
if t.device != nil {
|
|
t.device.Close()
|
|
t.device = nil
|
|
}
|
|
|
|
if t.udpMux != nil {
|
|
return t.udpMux.Close()
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (t *TunDevice) WgAddress() WGAddress {
|
|
return t.address
|
|
}
|
|
|
|
func (t *TunDevice) DeviceName() string {
|
|
return t.name
|
|
}
|
|
|
|
func (t *TunDevice) FilteredDevice() *FilteredDevice {
|
|
return t.filteredDevice
|
|
}
|
|
|
|
// assignAddr Adds IP address to the tunnel interface and network route based on the range provided
|
|
func (t *TunDevice) assignAddr() error {
|
|
cmd := exec.Command("ifconfig", t.name, "inet", t.address.IP.String(), t.address.IP.String())
|
|
if out, err := cmd.CombinedOutput(); err != nil {
|
|
log.Errorf("adding address command '%v' failed with output: %s", cmd.String(), out)
|
|
return err
|
|
}
|
|
|
|
// dummy ipv6 so routing works
|
|
cmd = exec.Command("ifconfig", t.name, "inet6", "fe80::/64")
|
|
if out, err := cmd.CombinedOutput(); err != nil {
|
|
log.Debugf("adding address command '%v' failed with output: %s", cmd.String(), out)
|
|
}
|
|
|
|
routeCmd := exec.Command("route", "add", "-net", t.address.Network.String(), "-interface", t.name)
|
|
if out, err := routeCmd.CombinedOutput(); err != nil {
|
|
log.Errorf("adding route command '%v' failed with output: %s", routeCmd.String(), out)
|
|
return err
|
|
}
|
|
return nil
|
|
}
|