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27 Commits

Author SHA1 Message Date
Brad Fitzpatrick
0861923c21 ssh/tailssh, tailcfg: add more HoldAndDelegate expansions, document 
Updates #3802

Change-Id: I447f06b49e2a917bffe36881d0634c9195085512
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-03-22 17:56:45 -07:00
Brad Fitzpatrick
091ea4a4a5 ssh/tailssh: support placeholders in SSHAction.HoldAndDelegate URL 
Updates #3802

Change-Id: I60f9827409d14fd4f4824d102ba11db49bf0d365
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-03-22 16:02:40 -07:00
Brad Fitzpatrick
f7e976db55 tailcfg, ssh/tailssh: make SSHUser value '=' map ssh-user to same local-user 
Updates #3802

Change-Id: Icde60d4150ca15c25d615a4effb3d3c236f020a8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-03-21 10:49:37 -07:00
Brad Fitzpatrick
f30473211b ssh/tailssh: start of implementing optional session recording 
To asciinema cast format.

Updates #3802

Change-Id: Ifd3ea31922cd2c99068369cb1650e21f2545b0e1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-03-19 12:59:51 -07:00
Maisem Ali
45a7f6689c tailcfg: add field to allow LocalPortForwarding in SSHAction 
Updates #3802, #4129

Signed-off-by: Maisem Ali <maisem@tailscale.com>
 2022-03-14 13:39:42 -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
462e75666b ssh/tailssh: start sending the server version 
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
012098ec32 ssh/tailssh: fix terminal corruption (temporary hack) 
Maisem figured out the real problem but will take several commits
(e.g. tailscale/ssh#2) in different repos to get it fixed
properly. This is an interim hack.

Details of real fix:
https://github.com/tailscale/tailscale/issues/4146#issuecomment-1065952947

Updates #4146
Updates #3802

Change-Id: I7b7dc5713baa3e5de75b87b69e7179a6e7549b0b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-03-12 14:19:45 -08:00
Brad Fitzpatrick
efc48b0578 ssh/tailssh, ipnlocal, controlclient: fetch next SSHAction from network 
Updates #3802

Change-Id: I08e98805ab86d6bbabb6c365ed4526f54742fd8e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-03-10 13:41:08 -08:00
Maisem Ali
56bf2ce642 ssh/tailssh: handle local port forwarding 
Updates #3802

Signed-off-by: Maisem Ali <maisem@tailscale.com>
 2022-03-09 11:31:04 -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
Brad Fitzpatrick
4b50977422 ssh/tailssh: add more SSH tests, blend in env from ssh session 
Updates #3802

Change-Id: I568c661cacbb0524afcd8be9577457ddba611f19
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-02-24 16:02:01 -08:00
Brad Fitzpatrick
4cbdc84d27 cmd/tailscaled/childproc: add be-child registration mechanism 
For ssh and maybe windows service babysitter later.

Updates #3802

Change-Id: I7492b98df98971b3fb72d148ba92c2276cca491f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-02-24 14:20:20 -08:00
Brad Fitzpatrick
6e4f3614cf ssh/tailssh: add start of real ssh tests 
Updates #3802

Change-Id: I9aea4250062d3a06ca7a5e71a81d31c27a988615
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-02-24 14:13:12 -08:00
Brad Fitzpatrick
c9eca9451a ssh: make it build on darwin 
For local dev testing initially. Product-wise, it'll probably only be
workable on the two unsandboxed builds.

Updates #3802

Change-Id: Ic352f966e7fb29aff897217d79b383131bf3f92b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-02-24 13:00:45 -08:00
Brad Fitzpatrick
cce6aad6c0 ssh/tailssh: fix non-interactive commands as non-root user 
Updates #3802

Change-Id: I89a3f14420b8782bc407b1939dce54a1d24636da
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-02-24 12:13:16 -08:00
Brad Fitzpatrick
e2ed06c53c ssh/tailssh: break a method into half in prep for testing 
And add a private context type in the process.

Updates #3802

Change-Id: I257187f4cfb0f2248d95b81c1dfe0911ef203b60
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-02-24 09:59:00 -08:00
Brad Fitzpatrick
1b5bb2e81d ssh/tailssh: rename sshContext to sshConnInfo 
So it's not confused for a context.Context and we can add contexts
later and not look like we have two.

Updates #3802

Change-Id: Icf229ae2c020d173f3cbf09a13ccd03a60cbb85e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-02-24 09:06:21 -08:00
Brad Fitzpatrick
3c2cd854be ssh/tailssh: flesh out env, support non-pty commands 
Updates #3802

Change-Id: I7022460117542a5424919144828bf571c7c19ec0
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-02-23 15:00:41 -08:00
Brad Fitzpatrick
03caa95bf2 ssh/tailssh: get login shell when running as non-root 
And also reject attempts to use other users.

Updates #3802

Change-Id: Iddc85f6ea2dba17d12be66a50408d24c1f92833e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-02-18 19:22:11 -08:00
Brad Fitzpatrick
e1e20f6d39 ssh/tailssh: evaluate tailcfg.SSHPolicy on incoming connections 
Updates #3802
Fixes #3960

Change-Id: Ieda2007d462ddce6c217b958167417ae9755774e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-02-18 18:07:39 -08:00
Brad Fitzpatrick
bb93e29d5c tailcfg, ipn/ipnlocal: add Hostinfo.SSH_HostKeys, send when SSH enabled 
(The name SSH_HostKeys is bad but SSHHostKeys is worse.)

Updates #3802

Change-Id: I2a889019c9e8b065b668dd58140db4fcab868a91
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-02-17 15:46:57 -08:00
Brad Fitzpatrick
fbff1555fc ipnlocal, tailssh: start moving host key stuff into the right spot 
Make tailssh ask LocalBackend for the SSH hostkeys, as we'll need to
distribute them to peers.

For now only the hacky use-same-as-actual-host mode is implemented.

Updates #3802

Change-Id: I819dcb25c14e42e6692c441186c1dc744441592b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-02-17 14:01:50 -08:00
Brad Fitzpatrick
1b87e025e9 ssh/tailssh: move SSH code from wgengine/netstack to this new package 
Still largely incomplete, but in a better home now.

Updates #3802

Change-Id: I46c5ffdeb12e306879af801b06266839157bc624
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-02-15 12:21:01 -08:00