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141 lines
3.4 KiB
Go
141 lines
3.4 KiB
Go
//go:build android
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package device
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import (
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"strings"
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"github.com/pion/transport/v3"
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log "github.com/sirupsen/logrus"
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"golang.org/x/sys/unix"
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"golang.zx2c4.com/wireguard/device"
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"golang.zx2c4.com/wireguard/tun"
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"github.com/netbirdio/netbird/client/iface/bind"
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"github.com/netbirdio/netbird/client/iface/configurer"
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)
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// WGTunDevice ignore the WGTunDevice interface on Android because the creation of the tun device is different on this platform
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type WGTunDevice struct {
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address WGAddress
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port int
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key string
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mtu int
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iceBind *bind.ICEBind
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tunAdapter TunAdapter
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name string
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device *device.Device
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filteredDevice *FilteredDevice
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udpMux *bind.UniversalUDPMuxDefault
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configurer WGConfigurer
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}
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func NewTunDevice(address WGAddress, port int, key string, mtu int, transportNet transport.Net, tunAdapter TunAdapter, filterFn bind.FilterFn) *WGTunDevice {
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return &WGTunDevice{
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address: address,
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port: port,
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key: key,
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mtu: mtu,
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iceBind: bind.NewICEBind(transportNet, filterFn),
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tunAdapter: tunAdapter,
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}
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}
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func (t *WGTunDevice) Create(routes []string, dns string, searchDomains []string) (WGConfigurer, error) {
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log.Info("create tun interface")
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routesString := routesToString(routes)
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searchDomainsToString := searchDomainsToString(searchDomains)
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fd, err := t.tunAdapter.ConfigureInterface(t.address.String(), t.mtu, dns, searchDomainsToString, routesString)
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if err != nil {
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log.Errorf("failed to create Android interface: %s", err)
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return nil, err
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}
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tunDevice, name, err := tun.CreateUnmonitoredTUNFromFD(fd)
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if err != nil {
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_ = unix.Close(fd)
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log.Errorf("failed to create Android interface: %s", err)
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return nil, err
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}
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t.name = name
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t.filteredDevice = newDeviceFilter(tunDevice)
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log.Debugf("attaching to interface %v", name)
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t.device = device.NewDevice(t.filteredDevice, t.iceBind, device.NewLogger(wgLogLevel(), "[wiretrustee] "))
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// without this property mobile devices can discover remote endpoints if the configured one was wrong.
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// this helps with support for the older NetBird clients that had a hardcoded direct mode
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// t.device.DisableSomeRoamingForBrokenMobileSemantics()
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t.configurer = configurer.NewUSPConfigurer(t.device, t.name)
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err = t.configurer.ConfigureInterface(t.key, t.port)
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if err != nil {
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t.device.Close()
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t.configurer.Close()
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return nil, err
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}
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return t.configurer, nil
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}
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func (t *WGTunDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
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err := t.device.Up()
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if err != nil {
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return nil, err
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}
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udpMux, err := t.iceBind.GetICEMux()
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if err != nil {
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return nil, err
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}
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t.udpMux = udpMux
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log.Debugf("device is ready to use: %s", t.name)
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return udpMux, nil
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}
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func (t *WGTunDevice) UpdateAddr(addr WGAddress) error {
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// todo implement
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return nil
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}
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func (t *WGTunDevice) Close() error {
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if t.configurer != nil {
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t.configurer.Close()
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}
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if t.device != nil {
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t.device.Close()
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t.device = nil
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}
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if t.udpMux != nil {
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return t.udpMux.Close()
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}
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return nil
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}
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func (t *WGTunDevice) Device() *device.Device {
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return t.device
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}
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func (t *WGTunDevice) DeviceName() string {
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return t.name
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}
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func (t *WGTunDevice) WgAddress() WGAddress {
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return t.address
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}
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func (t *WGTunDevice) FilteredDevice() *FilteredDevice {
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return t.filteredDevice
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}
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func routesToString(routes []string) string {
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return strings.Join(routes, ";")
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}
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func searchDomainsToString(searchDomains []string) string {
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return strings.Join(searchDomains, ";")
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}
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