tailscale/wgengine/router_windows.go

65 lines
1.6 KiB
Go

// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package wgengine
import (
"log"
winipcfg "github.com/tailscale/winipcfg-go"
"github.com/tailscale/wireguard-go/device"
"github.com/tailscale/wireguard-go/tun"
"tailscale.com/types/logger"
)
const DefaultTunName = "tailscale0"
type winRouter struct {
logf func(fmt string, args ...interface{})
tunname string
nativeTun *tun.NativeTun
wgdev *device.Device
routeChangeCallback *winipcfg.RouteChangeCallback
}
func newUserspaceRouter(logf logger.Logf, wgdev *device.Device, tundev tun.Device) (Router, error) {
tunname, err := tundev.Name()
if err != nil {
return nil, err
}
return &winRouter{
logf: logf,
wgdev: wgdev,
tunname: tunname,
nativeTun: tundev.(*tun.NativeTun),
}, nil
}
func (r *winRouter) Up() error {
// MonitorDefaultRoutes handles making sure our wireguard UDP
// traffic goes through the old route, not recursively through the VPN.
var err error
r.routeChangeCallback, err = MonitorDefaultRoutes(r.wgdev, true, r.nativeTun)
if err != nil {
log.Fatalf("MonitorDefaultRoutes: %v\n", err)
}
return nil
}
func (r *winRouter) SetRoutes(rs RouteSettings) error {
err := ConfigureInterface(rs.Cfg, r.nativeTun, rs.DNS, rs.DNSDomains)
if err != nil {
r.logf("ConfigureInterface: %v\n", err)
return err
}
return nil
}
func (r *winRouter) Close() error {
if r.routeChangeCallback != nil {
r.routeChangeCallback.Unregister()
}
return nil
}