Commit Graph

8 Commits

Author SHA1 Message Date
Aaron Klotz 3a74f2d2d7 cmd/tailscaled, util/winutil: add accessor functions for Windows system policies.
This patch adds new functions to be used when accessing system policies,
and revises callers to use the new functions. They first attempt the new
registry path for policies, and if that fails, attempt to fall back to the
legacy path.

We keep non-policy variants of these functions because we should be able to
retain the ability to read settings from locations that are not exposed to
sysadmins for group policy edits.

The remaining changes will be done in corp.

Updates https://github.com/tailscale/tailscale/issues/3584

Signed-off-by: Aaron Klotz <aaron@tailscale.com>
2022-02-09 14:58:51 -07:00
Aaron Klotz d7962e3bcf ipn/ipnserver, util/winutil: update workaround for os/user.LookupId failures on Windows to reject SIDs from deleted/invalid security principals.
Our current workaround made the user check too lax, thus allowing deleted
users. This patch adds a helper function to winutil that checks that the
uid's SID represents a valid Windows security principal.

Now if `lookupUserFromID` determines that the SID is invalid, we simply
propagate the error.

Updates https://github.com/tailscale/tailscale/issues/869

Signed-off-by: Aaron Klotz <aaron@tailscale.com>
2022-02-02 15:01:28 -07:00
Aaron Klotz 3386a86fe5 util/winutil: add GetRegInteger
This helper allows us to retrieve `DWORD` and `QWORD` values from the Tailscale key in the Windows registry.

Signed-off-by: Aaron Klotz <aaron@tailscale.com>
2021-09-29 09:43:22 -06:00
Josh Bleecher Snyder a5da4ed981 all: gofmt with Go 1.17
This adds "//go:build" lines and tidies up existing "// +build" lines.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-08-05 15:54:00 -07:00
David Crawshaw 6b9f8208f4 net/dns: do not run wsl.exe as LocalSystem
It doesn't work. It needs to run as the user.

	https://github.com/microsoft/WSL/issues/4803

The mechanism for doing this was extracted from:

	https://web.archive.org/web/20101009012531/http://blogs.msdn.com/b/winsdk/archive/2009/07/14/launching-an-interactive-process-from-windows-service-in-windows-vista-and-later.aspx

While here, we also reclaculate WSL distro set on SetDNS.
This accounts for:

	1. potential inability to access wsl.exe on startup
	2. WSL being installed while Tailscale is running
	3. A new WSL distrobution being installed

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
2021-06-30 10:11:33 -07:00
Christine Dodrill a480b1baa5
logpolicy: set log target on windows based on a registry key (#1542)
Signed-off-by: Christine Dodrill <xe@tailscale.com>
2021-03-18 13:23:56 -04:00
Brad Fitzpatrick 2d5db90161 util/winutil: make it actually compile
Helps to use the right GOOS after refactoring, sigh.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-02-26 20:52:23 -08:00
Brad Fitzpatrick e98cdbb8b6 util/winutil: add little Windows utility package
Code from Alex Brainman, split out of another change. I changed it to
a comma-ok return and tweaked the docs a bit.
2021-02-26 20:42:00 -08:00