Commit Graph

7 Commits (c0a1ed86cbe5e8a8511b04fe1406b3903cd9f8b8)

Author SHA1 Message Date
Andrew Dunham e985c6e58f ssh/tailssh: try fetching group IDs for user with the 'id' command
Since the tailscaled binaries that we distribute are static and don't
link cgo, we previously wouldn't fetch group IDs that are returned via
NSS. Try shelling out to the 'id' command, similar to how we call
'getent', to detect such cases.

Updates #11682

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I9bdc938bd76c71bc130d44a97cc2233064d64799
6 months ago
Andrew Lytvynov 1fc1077052
ssh/tailssh,util: extract new osuser package from ssh code (#10170)
This package is a wrapper for os/user that handles non-cgo builds,
gokrazy and user shells.

Updates tailscale/corp#15405

Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
12 months ago
Brad Fitzpatrick bd02d00608 ssh/tailssh: fix gokrazy SSH crash
Stupid mistake in earlier refactor.

Updates gokrazy/gokrazy#209

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
1 year ago
Derek Burdick d3c8c3dd00 ssh/tailssh: Max Username Length 256 for linux
Max username length is increased to 256 on linux to match /usr/include/bits/local_lim.h

Fixes #8277

Signed-off-by: Derek Burdick <derek-burdick@users.noreply.github.com>
1 year ago
Brad Fitzpatrick a4fd4fd845 ssh/tailssh: fix regression after LDAP support
58ab66ec51 added LDAP support
for #4945 by shelling out to getdent.

It was supposed to fall back to the old method when getdent wasn't
found, but some variable name confusion (uid vs username) meant the
old path wasn't calling the right lookup function (user.LookupId
instead of user.Lookup).

Which meant that changed probably also broke FreeBSD and macOS SSH
support in addition to the reported OpenWRT regression.

The gokrazy support didn't look right either.

Fixes #8180

Change-Id: I273bbe96fe98b2517fbf0335fd476b483c051554
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
1 year ago
Brad Fitzpatrick a743b66f9d ssh/tailssh: move some user-related code into new user.go
The previous commit 58ab66e added ssh/tailssh/user.go as part of
working on #4945. So move some more user-related code over to it.

Updates #cleanup

Change-Id: I24de66df25ffb8f867e1a0a540d410f9ef16d7b0
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 58ab66ec51 ssh/tailssh: support LDAP users for Tailscale SSH
Fixes #4945

Change-Id: Ie013cb47684cb87928a44f92c66352310bfe53f1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago