func (s *server) TryDial(config *ssh.ClientConfig) (*ssh.Client, error) {
sshd, err := exec.LookPath("sshd")
if err != nil {
s.t.Skipf("skipping test: %v", err)
}
c1, c2, err := unixConnection()
if err != nil {
s.t.Fatalf("unixConnection: %v", err)
}
s.cmd = exec.Command(sshd, "-f", s.configfile, "-i", "-e")
f, err := c2.File()
if err != nil {
s.t.Fatalf("UnixConn.File: %v", err)
}
defer f.Close()
s.cmd.Stdin = f
s.cmd.Stdout = f
s.cmd.Stderr = &s.output
if err := s.cmd.Start(); err != nil {
s.t.Fail()
s.Shutdown()
s.t.Fatalf("s.cmd.Start: %v", err)
}
s.clientConn = c1
conn, chans, reqs, err := ssh.NewClientConn(c1, "", config)
if err != nil {
return nil, err
}
return ssh.NewClient(conn, chans, reqs), nil
}
func TestSetupForwardAgent(t *testing.T) {
a, b, err := netPipe()
if err != nil {
t.Fatalf("netPipe: %v", err)
}
defer a.Close()
defer b.Close()
_, socket, cleanup := startAgent(t)
defer cleanup()
serverConf := ssh.ServerConfig{
NoClientAuth: true,
}
serverConf.AddHostKey(testSigners["rsa"])
incoming := make(chan *ssh.ServerConn, 1)
go func() {
conn, _, _, err := ssh.NewServerConn(a, &serverConf)
if err != nil {
t.Fatalf("Server: %v", err)
}
incoming <- conn
}()
conf := ssh.ClientConfig{}
conn, chans, reqs, err := ssh.NewClientConn(b, "", &conf)
if err != nil {
t.Fatalf("NewClientConn: %v", err)
}
client := ssh.NewClient(conn, chans, reqs)
if err := ForwardToRemote(client, socket); err != nil {
t.Fatalf("SetupForwardAgent: %v", err)
}
server := <-incoming
ch, reqs, err := server.OpenChannel(channelType, nil)
if err != nil {
t.Fatalf("OpenChannel(%q): %v", channelType, err)
}
go ssh.DiscardRequests(reqs)
agentClient := NewClient(ch)
testAgentInterface(t, agentClient, testPrivateKeys["rsa"], nil)
conn.Close()
}
func TestAuth(t *testing.T) {
a, b, err := netPipe()
if err != nil {
t.Fatalf("netPipe: %v", err)
}
defer a.Close()
defer b.Close()
agent, _, cleanup := startAgent(t)
defer cleanup()
if err := agent.Add(testPrivateKeys["rsa"], nil, "comment"); err != nil {
t.Errorf("Add: %v", err)
}
serverConf := ssh.ServerConfig{}
serverConf.AddHostKey(testSigners["rsa"])
serverConf.PublicKeyCallback = func(c ssh.ConnMetadata, key ssh.PublicKey) (*ssh.Permissions, error) {
if bytes.Equal(key.Marshal(), testPublicKeys["rsa"].Marshal()) {
return nil, nil
}
return nil, errors.New("pubkey rejected")
}
go func() {
conn, _, _, err := ssh.NewServerConn(a, &serverConf)
if err != nil {
t.Fatalf("Server: %v", err)
}
conn.Close()
}()
conf := ssh.ClientConfig{}
conf.Auth = append(conf.Auth, ssh.PublicKeysCallback(agent.Signers))
conn, _, _, err := ssh.NewClientConn(b, "", &conf)
if err != nil {
t.Fatalf("NewClientConn: %v", err)
}
conn.Close()
}
func NewTunnelledSSHClient(user, tunaddr, tgtaddr string, checker *HostKeyChecker, agentForwarding bool) (*SSHForwardingClient, error) {
clientConfig, err := sshClientConfig(user, checker)
if err != nil {
return nil, err
}
tunaddr = maybeAddDefaultPort(tunaddr)
tgtaddr = maybeAddDefaultPort(tgtaddr)
var tunnelClient *gossh.Client
dialFunc := func(echan chan error) {
var err error
tunnelClient, err = gossh.Dial("tcp", tunaddr, clientConfig)
echan <- err
}
err = timeoutSSHDial(dialFunc)
if err != nil {
return nil, err
}
var targetConn net.Conn
dialFunc = func(echan chan error) {
tgtTCPAddr, err := net.ResolveTCPAddr("tcp", tgtaddr)
if err != nil {
echan <- err
return
}
targetConn, err = tunnelClient.DialTCP("tcp", nil, tgtTCPAddr)
echan <- err
}
err = timeoutSSHDial(dialFunc)
if err != nil {
return nil, err
}
c, chans, reqs, err := gossh.NewClientConn(targetConn, tgtaddr, clientConfig)
if err != nil {
return nil, err
}
return newSSHForwardingClient(gossh.NewClient(c, chans, reqs), agentForwarding)
}