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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
// Session tests.
import (
"bytes"
"io"
"testing"
)
// dial constructs a new test server and returns a *ClientConn.
func dial(t *testing.T) *ClientConn {
pw := password("tiger")
serverConfig.PasswordCallback = func(user, pass string) bool {
return user == "testuser" && pass == string(pw)
}
serverConfig.PubKeyCallback = nil
l, err := Listen("tcp", "127.0.0.1:0", serverConfig)
if err != nil {
t.Fatalf("unable to listen: %s", err)
}
go func() {
defer l.Close()
conn, err := l.Accept()
if err != nil {
t.Errorf("Unable to accept: %v", err)
return
}
defer conn.Close()
if err := conn.Handshake(); err != nil {
t.Errorf("Unable to handshake: %v", err)
return
}
for {
ch, err := conn.Accept()
if err == io.EOF {
return
}
if err != nil {
t.Errorf("Unable to accept incoming channel request: %v", err)
return
}
if ch.ChannelType() != "session" {
ch.Reject(UnknownChannelType, "unknown channel type")
continue
}
ch.Accept()
go func() {
defer ch.Close()
// this string is returned to stdout
shell := NewServerShell(ch, "golang")
shell.ReadLine()
type exitMsg struct {
PeersId uint32
Request string
WantReply bool
Status uint32
}
// TODO(dfc) converting to the concrete type should not be
// necessary to send a packet.
msg := exitMsg{
PeersId: ch.(*channel).theirId,
Request: "exit-status",
WantReply: false,
Status: 0,
}
ch.(*channel).serverConn.writePacket(marshal(msgChannelRequest, msg))
}()
}
t.Log("done")
}()
config := &ClientConfig{
User: "testuser",
Auth: []ClientAuth{
ClientAuthPassword(pw),
},
}
c, err := Dial("tcp", l.Addr().String(), config)
if err != nil {
t.Fatalf("unable to dial remote side: %s", err)
}
return c
}
// Test a simple string is returned to session.Stdout.
func TestSessionShell(t *testing.T) {
conn := dial(t)
defer conn.Close()
session, err := conn.NewSession()
if err != nil {
t.Fatalf("Unable to request new session: %s", err)
}
defer session.Close()
stdout := new(bytes.Buffer)
session.Stdout = stdout
if err := session.Shell(); err != nil {
t.Fatalf("Unable to execute command: %s", err)
}
if err := session.Wait(); err != nil {
t.Fatalf("Remote command did not exit cleanly: %s", err)
}
actual := stdout.String()
if actual != "golang" {
t.Fatalf("Remote shell did not return expected string: expected=golang, actual=%s", actual)
}
}
// TODO(dfc) add support for Std{in,err}Pipe when the Server supports it.
// Test a simple string is returned via StdoutPipe.
func TestSessionStdoutPipe(t *testing.T) {
conn := dial(t)
defer conn.Close()
session, err := conn.NewSession()
if err != nil {
t.Fatalf("Unable to request new session: %s", err)
}
defer session.Close()
stdout, err := session.StdoutPipe()
if err != nil {
t.Fatalf("Unable to request StdoutPipe(): %v", err)
}
var buf bytes.Buffer
if err := session.Shell(); err != nil {
t.Fatalf("Unable to execute command: %s", err)
}
done := make(chan bool, 1)
go func() {
if _, err := io.Copy(&buf, stdout); err != nil {
t.Errorf("Copy of stdout failed: %v", err)
}
done <- true
}()
if err := session.Wait(); err != nil {
t.Fatalf("Remote command did not exit cleanly: %s", err)
}
<-done
actual := buf.String()
if actual != "golang" {
t.Fatalf("Remote shell did not return expected string: expected=golang, actual=%s", actual)
}
}
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