Commit Graph
17 Commits
Author SHA1 Message Date
Han-Wen Nienhuys d81fdb778b x/crypto/ssh: handle missing exit status more gracefully.
According to RFC 4254 section 6.10, SSH server implementations may
omit the exit-status and exit-signal messages.  If this happens, we
now return &ExitMissingError{}, so clients can handle this case
specifically.

This came up in the discussion of issue #16194.

Change-Id: Iae5e916b18aa5bd8e95618e9fcfcab8b19e147d9
Reviewed-on: https://go-review.googlesource.com/24727
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Han-Wen Nienhuys <hanwen@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-07-06 18:05:22 +00:00
Han-Wen Nienhuys cd884d3570 x/crypto/ssh: use BigEndian.Uint32 for decoding exit status.
Change-Id: Iab40fe42454088a00abea61dfb6f368da9323eb3
Reviewed-on: https://go-review.googlesource.com/24726
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Han-Wen Nienhuys <hanwen@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-07-06 14:48:16 +00:00
Scott Bell de15db8e4b x/crypto/ssh: omit empty fields in error message
Although the signal and msg fields are assigned together, their
values originate from the remote server and may be empty.

Fixes golang/go#14251

Change-Id: I9d9094cc69f3c14bf1648af59951f6b6c7a71e0a
Reviewed-on: https://go-review.googlesource.com/22196
Reviewed-by: Han-Wen Nienhuys <hanwen@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-04-20 10:39:07 +00:00
Jonathan Boulle 346896d577 crypto/ssh: fix typo in error string.
cound -> could
Also change fmt.Errorf -> errors.New for consistency.

Change-Id: I0b6900a76b70cd37ab2e8d61327868b46366ec64
Reviewed-on: https://go-review.googlesource.com/11235
Reviewed-by: Adam Langley <agl@golang.org>
2015-11-15 23:11:30 +00:00
Adam Langley fa50e7408b go.crypto/ssh: import gosshnew.
See https://groups.google.com/d/msg/Golang-nuts/AoVxQ4bB5XQ/i8kpMxdbVlEJ

R=hanwen
CC=golang-codereviews
https://golang.org/cl/86190043
2014-04-09 13:57:52 -07:00
Jakob Borg 4758fe8ce4 go.crypto/ssh: Increase window size.
Increase window size for channels (session and tcpip) to 64 *
max packet size (32 KB), which is the same value that OpenSSH
uses. Also breaks out the relevant harcoded constants into named
constants in channel.go.

Fixes golang/go#6675.

R=golang-dev, dave, hanwen, agl
CC=golang-dev
https://golang.org/cl/18120043
2013-11-01 04:24:39 +11:00
Dave Cheney c0d640c887 go.crypto/ssh: ensure {Server,Client}Conn do not expose io.ReadWriter
Transport should not be a ReadWriter. It can only write packets, i.e. no partial reads or writes. Furthermore, you can currently do ClientConn.Write() while the connection is live, which sends raw bytes over the connection. Doing so will confuse the transports because the data is not encrypted.

As a consequence, ClientConn and ServerConn stop being a net.Conn

Finally, ensure that {Server,Client}Conn implement LocalAddr and RemoteAddr methods that previously were exposed by an embedded net.Conn field.

R=hanwen
CC=golang-dev
https://golang.org/cl/16610043
2013-10-25 06:29:58 +11:00
Jonathan Pittman 44256fa2df go.crypto/ssh: cosmetic only spelling fixes
R=agl, hanwen
CC=dave, golang-dev, jpsugar
https://golang.org/cl/14430055
2013-10-10 11:35:15 -04:00
Keith Rarick 0e971cde33 ssh: add Output and CombinedOutput helpers
R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/9711043
2013-05-29 16:06:18 +10:00
Eric Milliken 61ab4d36df go.crypto/ssh: support OpenSSH keepalives
Fixes golang/go#4552.

R=minux.ma, agl
CC=golang-dev
https://golang.org/cl/6948059
2012-12-18 11:33:58 -05:00
Adam Langley 4002be2701 go.crypto/ssh: run gofmt
gofmt got better at removing trailing whitespace.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6929044
2012-12-10 18:12:36 -05:00
Willem van der Schyff 2fccde5d00 go.crypto/ssh: add terminal modes to ssh.RequestPty()
R=dave, agl
CC=golang-dev
https://golang.org/cl/6655046
2012-10-21 16:16:55 +11:00
Dave Cheney c1c0bfbd3a go.crypto/ssh: prevent channel writes after Close
Fixes golang/go#3810.

This change introduces an atomic boolean to guard the close
of the clientChan. Previously the client code was quite
lax with the ordering of the close messages and could allow
window adjustment or EOF messages to leak after Close had
been signaled.

Consolidating the changes to the serverChan will be handled
in a following CL.

R=agl, kardianos, gustav.paul
CC=golang-dev
https://golang.org/cl/6405064
2012-08-24 09:46:44 +10:00
Christine Hansmann cde552e05f ssh: added RequestSubsystem().
RequestSubsystem requests the association of a subsystem with the ssh
session on the remote host. A subsystem is a predefined command that
runs in the background when the ssh session is initiated (i.e. sftp).

R=golang-dev, agl
CC=golang-dev, gustav.paul
https://golang.org/cl/6295096
2012-06-18 12:11:37 -04:00
Dave Cheney 68e64b8f78 go.crypto/ssh: struct renaming
This CL is in preparation for 6128059.

* rename channel -> serverChan
* rename chanlist -> chanList
* normalise theirId/MyId/id/peersId -> localId/remoteId

R=agl
CC=golang-dev
https://golang.org/cl/6174046
2012-05-05 07:59:48 +10:00
Adam Langley 63f855d724 ssh: cosmetic cleanups
These are the cosmetic cleanups from the bits of code that I
rereviewed.

1) stringLength now takes a int; the length of the string. Too many
   callers were allocating with stringLength([]byte(s)) and
   stringLength only needs to call len().

2) agent.go now has sendAndReceive to remove logic that was
   duplicated.

3) We now reject negative DH values

4) We now reject empty packets rather than crashing.

R=dave, jonathan.mark.pittman
CC=golang-dev
https://golang.org/cl/6061052
2012-04-20 15:17:42 -04:00
Russ Cox 470549d502 go.crypto: initial code
Manual edits to README.
Moved from main Go repository, deleted Makefiles, ran gofix -r go1rename.

Tested with: go test code.google.com/p/go.crypto/...

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5564059
2012-01-25 15:31:12 -05:00