tailscale/wgengine/router/router_windows_test.go

// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause

package router

import (
	"path/filepath"
	"testing"
)

func TestGetNetshPath(t *testing.T) {
	ft := &firewallTweaker{
		logf: t.Logf,
	}
	path := ft.getNetshPath()
	if !filepath.IsAbs(path) {
		t.Errorf("expected absolute path for netsh.exe: %q", path)
	}
}
wgengine/router: look up absolute path to netsh.exe on Windows This is in response to logs from a customer that show that we're unable to run netsh due to the following error: router: firewall: adding Tailscale-Process rule to allow UDP for "C:\\Program Files\\Tailscale\\tailscaled.exe" ... router: firewall: error adding Tailscale-Process rule: exec: "netsh": cannot run executable found relative to current directory: There's approximately no reason to ever dynamically look up the path of a system utility like netsh.exe, so instead let's first look for it in the System32 directory and only if that fails fall back to the previous behaviour. Updates #10804 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I68cfeb4cab091c79ccff3187d35f50359a690573 4 months ago			`// Copyright (c) Tailscale Inc & AUTHORS`
			`// SPDX-License-Identifier: BSD-3-Clause`

			`package router`

			`import (`
			`"path/filepath"`
			`"testing"`
			`)`

			`func TestGetNetshPath(t *testing.T) {`
			`ft := &firewallTweaker{`
			`logf: t.Logf,`
			`}`
			`path := ft.getNetshPath()`
			`if !filepath.IsAbs(path) {`
			`t.Errorf("expected absolute path for netsh.exe: %q", path)`
			`}`
			`}`