Brad Fitzpatrick
48ec6284d3
The pipe's security descriptor named the Administrators group as the pipe's owner (O:BA) and primary group (G:BA). Only administrators may assign that SID as an owner, so a tailscaled run by a regular user (in userspace-networking mode with its own --socket) died at startup with "This security ID may not be assigned as the owner of this object". The tests already had to swap in an empty descriptor to run unelevated. Neither part did anything for us. The primary group is never consulted by Windows access checks; it exists only for POSIX and NFS compatibility. The owner grants exactly one thing beyond the DACL: the right to read and rewrite the pipe's DACL. Whoever creates the pipe already has that in practice. For the default pipe name under ProtectedPrefix\Administrators, the creator must be an administrator (only administrators may create pipes with that prefix), so naming Administrators as owner gave them nothing new. A regular user creating a pipe of some other name runs the process that owns it and controls its DACL anyway. Who may connect is decided only by the DACL, which is unchanged: read and write for Users and LocalSystem. So drop the owner and group and let the creator own the pipe. While here, drop the AI, OI, and CI flags too: they concern inheritance to child objects, which a named pipe doesn't have, and were copied from a file system descriptor. The tests now use the real descriptor. Also give a pointer when listening on the default ProtectedPrefix\Administrators pipe fails with access denied. Updates #2791 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> Change-Id: I8a1c3e5f7b9d2e4a6c8b0d2f4e6a8c0b2d4f6a8c
Tailscale
Private WireGuard® networks made easy
Overview
This repository contains the majority of Tailscale's open source code.
Notably, it includes the tailscaled daemon and
the tailscale CLI tool. The tailscaled daemon runs on Linux, Windows,
macOS, and to varying degrees
on FreeBSD and OpenBSD. The Tailscale iOS and Android apps use this repo's
code, but this repo doesn't contain the mobile GUI code.
Other Tailscale repos of note:
- the Android app is at https://github.com/tailscale/tailscale-android
- the Synology package is at https://github.com/tailscale/tailscale-synology
- the QNAP package is at https://github.com/tailscale/tailscale-qpkg
- the Chocolatey packaging is at https://github.com/tailscale/tailscale-chocolatey
For background on which parts of Tailscale are open source and why, see https://tailscale.com/opensource/.
Using
We serve packages for a variety of distros and platforms at https://pkgs.tailscale.com.
Other clients
The macOS, iOS, and Windows clients use the code in this repository but additionally include small GUI wrappers. The GUI wrappers on non-open source platforms are themselves not open source.
Building
We always require the latest Go release, currently Go 1.27. (While we build releases with our Go fork, its use is not required.)
go install tailscale.com/cmd/tailscale{,d}
If you're packaging Tailscale for distribution, use build_dist.sh
instead, to burn commit IDs and version info into the binaries:
./build_dist.sh tailscale.com/cmd/tailscale
./build_dist.sh tailscale.com/cmd/tailscaled
If your distro has conventions that preclude the use of
build_dist.sh, please do the equivalent of what it does in your
distro's way, so that bug reports contain useful version information.
Bugs
Please file any issues about this code or the hosted service on the issue tracker.
Contributing
PRs welcome! But please file bugs. Commit messages should reference bugs.
We require Developer Certificate of
Origin
Signed-off-by lines in commits.
See commit-messages.md (or skim git log) for our commit message style.
About Us
Tailscale is primarily developed by the people at https://github.com/orgs/tailscale/people. For other contributors, see:
- https://github.com/tailscale/tailscale/graphs/contributors
- https://github.com/tailscale/tailscale-android/graphs/contributors
Legal
WireGuard is a registered trademark of Jason A. Donenfeld.