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19 Commits

Author SHA1 Message Date
Maisem Ali
760740905e ssh/tailssh: only use login with TTY sessions 
Otherwise, the shell exits immediately causing applications like mosh
and VSCode to fail.

Signed-off-by: Maisem Ali <maisem@tailscale.com>
 2022-05-28 21:03:40 +05:00
Maisem Ali
5cd56fe8d5 ssh/tailssh: exec into login when launching a shell 
This has the added benefit of displaying the MOTD and reducing our
dependency on the DBus interface.

Fixes #4627
Updates #3802

Signed-off-by: Maisem Ali <maisem@tailscale.com>
 2022-05-09 19:17:52 -07:00
Maisem Ali
a253057fc3 ssh/tailssh: refactor incubator flags 
Signed-off-by: Maisem Ali <maisem@tailscale.com>
 2022-05-09 19:17:52 -07:00
David Anderson
a364bf2b62 ssh/tailssh: various typo fixes, clarifications. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2022-04-21 15:04:13 -07:00
Maisem Ali
337c77964b ssh/tailssh: set groups and gid in the incubated process 
Updates #3802

Signed-off-by: Maisem Ali <maisem@tailscale.com>
 2022-04-21 14:48:34 -07:00
Brad Fitzpatrick
8ac4d52b59 ssh/tailssh: filter accepted environment variables 
Noted by @danderson

Updates #3802

Change-Id: Iac70717ed57f11726209ac1ea93ddc6696605f94
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-04-21 14:44:46 -07:00
Maisem Ali
695f8a1d7e ssh/tailssh: add support for sftp 
Updates #3802

Signed-off-by: Maisem Ali <maisem@tailscale.com>
 2022-04-21 10:52:22 -07:00
Maisem Ali
2b8b887d55 ssh/tailssh: send banner messages during auth, move more to conn 
(VSCode Live Share between Brad & Maisem!)

Updates #3802

Change-Id: Id8edca4481b0811debfdf56d4ccb1a46f71dd6d3
Co-Authored-By: Brad Fitzpatrick <bradfitz@tailscale.com>
Signed-off-by: Maisem Ali <maisem@tailscale.com>
 2022-04-20 18:34:11 -07:00
Brad Fitzpatrick
da14e024a8 tailcfg, ssh/tailssh: optionally support SSH public keys in wire policy 
And clean up logging.

Updates #3802

Change-Id: I756dc2d579a16757537142283d791f1d0319f4f0
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-04-15 13:36:57 -07:00
Brad Fitzpatrick
5a44f9f5b5 tempfork: temporarily fork gliderlabs/ssh and x/crypto/ssh 
While we rearrange/upstream things.

gliderlabs/ssh is forked into tempfork from our prior fork
at be8b7add40

x/crypto/ssh OTOH is forked at
https://github.com/tailscale/golang-x-crypto because it was gnarlier
to vendor with various internal packages, etc.
Its git history shows where it starts (2c7772ba30643b7a2026cbea938420dce7c6384d).

Updates #3802

Change-Id: I546e5cdf831cfc030a6c42557c0ad2c58766c65f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-03-26 21:07:01 -07:00
Maisem Ali
98b45ef12c ssh/tailssh: add support for agent forwarding. 
Updates #3802

Signed-off-by: Maisem Ali <maisem@tailscale.com>
 2022-03-14 13:38:53 -07:00
Brad Fitzpatrick
6e86bbcb06 ssh/tailssh: add a new sshSession type to clean up existing+future code 
Updates #3802

Change-Id: I7054dca387f5e5aee1185937ecf41b77a5a07f1a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Co-authored-by: Maisem Ali <maisem@tailscale.com>
 2022-03-14 12:01:49 -07:00
Maisem Ali
bf3559171f ssh/tailssh: set DBUS_SESSION_BUS_ADDRESS and SSH_TTY variables 
Updates #3802

Signed-off-by: Maisem Ali <maisem@tailscale.com>
 2022-03-12 19:40:51 -08:00
Maisem Ali
6d61b7906e ssh/tailssh: handle terminal opcodes 
Updates #3802 #4146

Signed-off-by: Maisem Ali <maisem@tailscale.com>
 2022-03-12 17:57:07 -08:00
Maisem Ali
da6ce27416 go.mod: move from github.com/gliderlabs/ssh to github.com/tailscale/ssh 
Updates #4146

Signed-off-by: Maisem Ali <maisem@tailscale.com>
 2022-03-12 17:57:07 -08:00
Brad Fitzpatrick
ba1adf6c24 ssh/tailssh: make pty termios options match OpenSSH 
Still not sure the exact rules of how/when/who's supposed to set
these, but this works for now on making them match. Baby steps.
Will research more and adjust later.

Updates #4146 (but not enough to fix it, something's still wrong)
Updates #3802

Change-Id: I496d8cd7e31d45fe9ede88fc8894f35dc096de67
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-03-11 12:16:10 -08:00
Brad Fitzpatrick
1dd5cf62a5 ssh/tailssh: start login shell, fix arg passing, width/height mismatch 
Updates #3802

Change-Id: I137d7a79195ee86d5dd7c8999f2797fc3cb57cec
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-03-10 20:11:41 -08:00
Maisem Ali
598c7a22e7 ssh/tailssh: use lu.Username not lu.Name. 
Signed-off-by: Maisem Ali <maisem@tailscale.com>
 2022-03-08 22:39:03 -08:00
Maisem Ali
06c147d848 ssh/tailssh: create login sessions for new connections 
Signed-off-by: Maisem Ali <maisem@tailscale.com>
 2022-03-08 21:47:19 -08:00