func (d *ESX5Driver) connect() error {
address := fmt.Sprintf("%s:%d", d.Host, d.Port)
auth := []gossh.ClientAuth{
gossh.ClientAuthPassword(ssh.Password(d.Password)),
gossh.ClientAuthKeyboardInteractive(
ssh.PasswordKeyboardInteractive(d.Password)),
}
// TODO(dougm) KeyPath support
sshConfig := &ssh.Config{
Connection: ssh.ConnectFunc("tcp", address),
SSHConfig: &gossh.ClientConfig{
User: d.Username,
Auth: auth,
},
NoPty: true,
}
comm, err := ssh.New(sshConfig)
if err != nil {
return err
}
d.comm = comm
return nil
}
func sshOnConn(conn net.Conn, h conf.Host) (*ssh.ClientConn, error) {
var auths []ssh.ClientAuth
if h.Pass != "" {
auths = append(auths, ssh.ClientAuthPassword(password(h.Pass)))
auths = append(auths, ssh.ClientAuthKeyboardInteractive(challenge(h.Pass)))
}
if h.Key != "" {
k := &keyring{}
err := k.loadPEM([]byte(h.Key))
if err != nil {
return nil, err
}
auths = append(auths, ssh.ClientAuthKeyring(k))
}
config := &ssh.ClientConfig{
User: h.User,
Auth: auths,
}
debugln("handshake & authenticate")
client, err := ssh.Client(conn, config)
if err != nil {
return nil, err
}
return client, nil
}
func sshConfig(state map[string]interface{}) (*gossh.ClientConfig, error) {
config := state["config"].(*config)
return &gossh.ClientConfig{
User: config.SSHUser,
Auth: []gossh.ClientAuth{
gossh.ClientAuthPassword(ssh.Password(config.SSHPassword)),
gossh.ClientAuthKeyboardInteractive(
ssh.PasswordKeyboardInteractive(config.SSHPassword)),
},
}, nil
}
func sshConfig(state multistep.StateBag) (*gossh.ClientConfig, error) {
config := state.Get("config").(*config)
auth := []gossh.ClientAuth{
gossh.ClientAuthPassword(ssh.Password(config.SSHPassword)),
gossh.ClientAuthKeyboardInteractive(
ssh.PasswordKeyboardInteractive(config.SSHPassword)),
}
if config.SSHKeyPath != "" {
keyring, err := sshKeyToKeyring(config.SSHKeyPath)
if err != nil {
return nil, err
}
auth = append(auth, gossh.ClientAuthKeyring(keyring))
}
return &gossh.ClientConfig{
User: config.SSHUser,
Auth: auth,
}, nil
}
// This blocks until SSH becomes available, and sends the communicator
// on the given channel.
func (s *stepWaitForSSH) waitForSSH(state map[string]interface{}) (packer.Communicator, error) {
config := state["config"].(*config)
ui := state["ui"].(packer.Ui)
sshHostPort := state["sshHostPort"].(uint)
ui.Say("Waiting for SSH to become available...")
var comm packer.Communicator
var nc net.Conn
for {
if nc != nil {
nc.Close()
}
time.Sleep(5 * time.Second)
if s.cancel {
log.Println("SSH wait cancelled. Exiting loop.")
return nil, errors.New("SSH wait cancelled")
}
// Attempt to connect to SSH port
nc, err := net.Dial("tcp", fmt.Sprintf("127.0.0.1:%d", sshHostPort))
if err != nil {
log.Printf("TCP connection to SSH ip/port failed: %s", err)
continue
}
// Then we attempt to connect via SSH
sshConfig := &gossh.ClientConfig{
User: config.SSHUser,
Auth: []gossh.ClientAuth{
gossh.ClientAuthPassword(ssh.Password(config.SSHPassword)),
gossh.ClientAuthKeyboardInteractive(
ssh.PasswordKeyboardInteractive(config.SSHPassword)),
},
}
sshConnectSuccess := make(chan bool, 1)
go func() {
comm, err = ssh.New(nc, sshConfig)
if err != nil {
log.Printf("SSH connection fail: %s", err)
sshConnectSuccess <- false
return
}
sshConnectSuccess <- true
}()
select {
case success := <-sshConnectSuccess:
if !success {
continue
}
case <-time.After(5 * time.Second):
log.Printf("SSH handshake timeout. Trying again.")
continue
}
ui.Say("Connected via SSH!")
break
}
// Store the connection so we can close it later
s.conn = nc
return comm, nil
}
// This blocks until SSH becomes available, and sends the communicator
// on the given channel.
func (s *stepWaitForSSH) waitForSSH(state map[string]interface{}) (packer.Communicator, error) {
config := state["config"].(*config)
ui := state["ui"].(packer.Ui)
vmxPath := state["vmx_path"].(string)
handshakeAttempts := 0
ui.Say("Waiting for SSH to become available...")
var comm packer.Communicator
for {
time.Sleep(5 * time.Second)
if s.cancel {
log.Println("SSH wait cancelled. Exiting loop.")
return nil, errors.New("SSH wait cancelled")
}
// First we wait for the IP to become available...
log.Println("Lookup up IP information...")
ipLookup, err := s.dhcpLeaseLookup(vmxPath)
if err != nil {
log.Printf("Can't lookup via DHCP lease: %s", err)
}
ip, err := ipLookup.GuestIP()
if err != nil {
log.Printf("IP lookup failed: %s", err)
continue
}
log.Printf("Detected IP: %s", ip)
// Attempt to connect to SSH port
connFunc := ssh.ConnectFunc(
"tcp", fmt.Sprintf("%s:%d", ip, config.SSHPort), 5*time.Minute)
nc, err := connFunc()
if err != nil {
log.Printf("TCP connection to SSH ip/port failed: %s", err)
continue
}
nc.Close()
// Then we attempt to connect via SSH
config := &ssh.Config{
Connection: connFunc,
SSHConfig: &gossh.ClientConfig{
User: config.SSHUser,
Auth: []gossh.ClientAuth{
gossh.ClientAuthPassword(ssh.Password(config.SSHPassword)),
gossh.ClientAuthKeyboardInteractive(
ssh.PasswordKeyboardInteractive(config.SSHPassword)),
},
},
}
comm, err = ssh.New(config)
if err != nil {
log.Printf("SSH handshake err: %s", err)
handshakeAttempts += 1
if handshakeAttempts < 10 {
// Try to connect via SSH a handful of times
continue
}
return nil, err
}
ui.Say("Connected via SSH!")
break
}
return comm, nil
}
