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58 Commits

Author SHA1 Message Date
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
c6ea282b3f utils/winutil utils/winutil/vss: add utility function for extracting data from Windows System Restore Point backups. 
utils/winutil/vss contains just enough COM wrapping to query the Volume Shadow Copy service for snapshots.
WalkSnapshotsForLegacyStateDir is the friendlier interface that adds awareness of our actual use case,
mapping the snapshots and locating our legacy state directory.

Updates #3011

Signed-off-by: Aaron Klotz <aaron@tailscale.com>
 2021-10-18 15:48:42 -06:00
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