tailscale/paths/paths.go

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// 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 paths returns platform and user-specific default paths to
// Tailscale files and directories.
package paths
import (
"os"
"path/filepath"
"runtime"
"sync/atomic"
"tailscale.com/version/distro"
)
// IOSSharedDir is a string set by the iOS app on start
// containing a directory we can read/write in.
var IOSSharedDir atomic.Value
// DefaultTailscaledSocket returns the path to the tailscaled Unix socket
// or the empty string if there's no reasonable default.
func DefaultTailscaledSocket() string {
if runtime.GOOS == "windows" {
return ""
}
if runtime.GOOS == "darwin" {
return "/var/run/tailscaled.socket"
}
if distro.Get() == distro.Synology {
// TODO(maisem): be smarter about this. We can parse /etc/VERSION.
const dsm6Sock = "/var/packages/Tailscale/etc/tailscaled.sock"
const dsm7Sock = "/var/packages/Tailscale/var/tailscaled.sock"
if fi, err := os.Stat(dsm6Sock); err == nil && !fi.IsDir() {
return dsm6Sock
}
if fi, err := os.Stat(dsm7Sock); err == nil && !fi.IsDir() {
return dsm7Sock
}
}
if fi, err := os.Stat("/var/run"); err == nil && fi.IsDir() {
return "/var/run/tailscale/tailscaled.sock"
}
return "tailscaled.sock"
}
var stateFileFunc func() string
// DefaultTailscaledStateFile returns the default path to the
// tailscaled state file, or the empty string if there's no reasonable
// default value.
func DefaultTailscaledStateFile() string {
if f := stateFileFunc; f != nil {
return f()
}
if runtime.GOOS == "windows" {
return filepath.Join(os.Getenv("LocalAppData"), "Tailscale", "server-state.conf")
}
return ""
}