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9ebb5d4205
ProgramData has a permissive ACL. For us to safely store machine-wide state information, we must set a more restrictive ACL on our state directory. We set the ACL so that only talescaled's user (ie, LocalSystem) and the Administrators group may access our directory. We must include Administrators to ensure that logs continue to be easily accessible; omitting that group would force users to use special tools to log in interactively as LocalSystem, which is not ideal. (Note that the ACL we apply matches the ACL that was used for LocalSystem's AppData\Local). There are two cases where we need to reset perms: One is during migration from the old location to the new. The second case is for clean installations where we are creating the file store for the first time. Updates #2856 Signed-off-by: Aaron Klotz <aaron@tailscale.com>
73 lines
2.1 KiB
Go
73 lines
2.1 KiB
Go
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package paths returns platform and user-specific default paths to
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// Tailscale files and directories.
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package paths
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import (
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"os"
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"path/filepath"
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"runtime"
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"sync/atomic"
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"tailscale.com/version/distro"
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)
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// AppSharedDir is a string set by the iOS or Android app on start
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// containing a directory we can read/write in.
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var AppSharedDir atomic.Value
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// DefaultTailscaledSocket returns the path to the tailscaled Unix socket
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// or the empty string if there's no reasonable default.
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func DefaultTailscaledSocket() string {
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if runtime.GOOS == "windows" {
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return ""
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}
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if runtime.GOOS == "darwin" {
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return "/var/run/tailscaled.socket"
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}
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if distro.Get() == distro.Synology {
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// TODO(maisem): be smarter about this. We can parse /etc/VERSION.
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const dsm6Sock = "/var/packages/Tailscale/etc/tailscaled.sock"
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const dsm7Sock = "/var/packages/Tailscale/var/tailscaled.sock"
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if fi, err := os.Stat(dsm6Sock); err == nil && !fi.IsDir() {
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return dsm6Sock
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}
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if fi, err := os.Stat(dsm7Sock); err == nil && !fi.IsDir() {
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return dsm7Sock
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}
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}
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if fi, err := os.Stat("/var/run"); err == nil && fi.IsDir() {
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return "/var/run/tailscale/tailscaled.sock"
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}
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return "tailscaled.sock"
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}
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var stateFileFunc func() string
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// DefaultTailscaledStateFile returns the default path to the
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// tailscaled state file, or the empty string if there's no reasonable
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// default value.
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func DefaultTailscaledStateFile() string {
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if f := stateFileFunc; f != nil {
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return f()
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}
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if runtime.GOOS == "windows" {
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return filepath.Join(os.Getenv("ProgramData"), "Tailscale", "server-state.conf")
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}
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return ""
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}
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// MkStateDir ensures that dirPath, the daemon's configurtaion directory
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// containing machine keys etc, both exists and has the correct permissions.
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// We want it to only be accessible to the user the daemon is running under.
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func MkStateDir(dirPath string) error {
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if err := os.MkdirAll(dirPath, 0700); err != nil {
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return err
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}
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return ensureStateDirPerms(dirPath)
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}
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