According to http://www.ietf.org/rfc/rfc4254.txt most channel messages contain the channel id of the recipient channel, not the sender id. This allows the recipient connection multiplexer to route the message to the correct channel.
This changeset fixes several messages that incorrectly send the local channel id instead of the remote channel's id.
While sessions were being created and closed in sequence channels in the channel pool were freed and reused on the server side of the connection at the same rate as was done on the client, so the channel local and remote channel ids always corresponded. As soon as I had concurrent sessions on the same clientConn the server started to complain of 'uknown channel id N' where N is the local channel id, which is actually paired with server channel id K.
R=golang-dev, dave, rsc, agl
CC=golang-dev
https://golang.org/cl/5433063
This CL inverts the direction of the Stdin/out/err members of the
Session struct so they reflect the API of the exec.Cmd. In doing so
it borrows heavily from the exec package.
Additionally Shell now returns immediately, wait for completion using
Wait. Exec calls Wait internally and so blocks until the remote
command is complete.
Credit to Gustavo Niemeyer for the impetus for this CL.
R=rsc, agl, n13m3y3r, huin, bradfitz
CC=cw, golang-dev
https://golang.org/cl/5322055
client.go/client_auth.go:
* add support for publickey key auth using the interface
outlined by rsc in the previous auth CL
client_auth_test.go:
* password and publickey tests against server.go
common.go/server.go:
* move some helper methods from server.go into common.go
* generalise serializeRSASignature
R=rsc, agl, huin
CC=cw, golang-dev, n13m3y3r
https://golang.org/cl/5373055
Some remote servers send a 0 window size in the channel
open confirm msg, others send a non zero window size. Make
sure this initial advertisement is not lost.
R=agl, rsc, cw
CC=golang-dev
https://golang.org/cl/5372083
This CL adds an API for handling the various SSH
authenticaton methods. None and password continue
to be the only supported methods.
R=bradfitz, agl, n13m3y3r, rsc, cw
CC=golang-dev
https://golang.org/cl/5328045
The payload of a data message is defined as an SSH string type,
which uses the first four bytes to encode its length. When channelData
and channelExtendedData were added I defined Payload as []byte to
be able to use it directly without a string to []byte conversion. This
resulted in the length data leaking into the payload data.
This CL fixes the bug, and restores agl's original fast path code.
Additionally, a bug whereby s.lock was not released if a packet arrived
for an invalid channel has been fixed.
Finally, as they were no longer used, I have removed
the channelData and channelExtedendData structs.
R=agl, rsc
CC=golang-dev
https://golang.org/cl/5330053
This CL replaces the Cmd type with a Session type representing
interactive channels. This lays the foundation for supporting
other kinds of channels like direct-tcpip or x11.
client.go:
* replace chanlist map with slice.
* generalize stdout and stderr into a single type.
* unexport ClientChan to clientChan.
doc.go:
* update ServerConfig/ServerConn documentation.
* update Client example for Session.
message.go:
* make channelExtendedData more like channelData.
session.go:
* added Session which replaces Cmd.
R=agl, rsc, n13m3y3r, gustavo
CC=golang-dev
https://golang.org/cl/5302054
server.go/channel.go:
* rename Server to ServerConfig to match Client.
* rename ServerConnection to ServeConn to match Client.
* add Listen/Listener.
* ServerConn.Handshake(), general cleanups.
client.go:
* fix bug where fmt.Error was not assigned to err
R=rsc, agl
CC=golang-dev
https://golang.org/cl/5265049
Dave Cheney
Gustav Paul
John Beisley
Rob Pike
Russ Cox