Function NewShell

internal/sshutil/shell.go:111–144

NewShell initializes a new shell to the given address.

(user, address string, opts ...ShellOption)

// NewShell initializes a new shell to the given address.
func NewShell(user, address string, opts ...ShellOption) (*Shell, error) {
	address = formatAddress(address)

	// Use known_host as HostKeyCallback
	knownHosts, err := knownhosts.New(filepath.Join(step.Home(), ".ssh", "known_hosts"))
	if err != nil {
		return nil, errors.Wrap(err, "error reading known_hosts")
	}

	shell := &Shell{
		user:    user,
		address: address,
	}
	if err := shell.apply(opts); err != nil {
		return nil, err
	}

	if len(shell.authMethods) == 0 {
		if err := withDefaultAuthMethod()(shell); err != nil {
			return nil, err
		}
	}
	if shell.dialer == nil {
		if err := withDefaultDialer(user, address)(shell); err != nil {
			return nil, err
		}
	}

	if shell.client, err = shell.dialer(knownHosts); err != nil {
		return nil, err
	}

	return shell, nil
}

func (s *Shell) apply(opts []ShellOption) error {
	for _, fn := range opts {