59 lines
1.3 KiB
Go
59 lines
1.3 KiB
Go
//go:build !e2e_testing
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// +build !e2e_testing
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package overlay
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import (
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"fmt"
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"net"
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"os"
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"path/filepath"
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"runtime"
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"syscall"
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"github.com/sirupsen/logrus"
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)
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func newTunFromFd(_ *logrus.Logger, _ int, _ *net.IPNet, _ int, _ []Route, _ int) (Device, error) {
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return nil, fmt.Errorf("newTunFromFd not supported in Windows")
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}
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func newTun(l *logrus.Logger, deviceName string, cidr *net.IPNet, defaultMTU int, routes []Route, _ int, _ bool) (Device, error) {
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useWintun := true
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if err := checkWinTunExists(); err != nil {
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l.WithError(err).Warn("Check Wintun driver failed, fallback to wintap driver")
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useWintun = false
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}
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if useWintun {
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device, err := newWinTun(l, deviceName, cidr, defaultMTU, routes)
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if err != nil {
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return nil, fmt.Errorf("create Wintun interface failed, %w", err)
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}
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return device, nil
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}
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device, err := newWaterTun(l, cidr, defaultMTU, routes)
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if err != nil {
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return nil, fmt.Errorf("create wintap driver failed, %w", err)
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}
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return device, nil
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}
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func checkWinTunExists() error {
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myPath, err := os.Executable()
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if err != nil {
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return err
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}
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arch := runtime.GOARCH
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switch arch {
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case "386":
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//NOTE: wintun bundles 386 as x86
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arch = "x86"
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}
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_, err = syscall.LoadDLL(filepath.Join(filepath.Dir(myPath), "dist", "windows", "wintun", "bin", arch, "wintun.dll"))
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return err
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}
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