Function proxyBastion

command/ssh/proxycommand.go:266–295

(r *api.SSHBastionResponse, user, host, port string)

}

func proxyBastion(r *api.SSHBastionResponse, user, host, port string) error {
	sshPath, err := exec.LookPath("ssh")
	if err != nil {
		sshPath = sshDefaultPath
	}

	args := []string{}
	if r.Bastion.User != "" {
		args = append(args, "-l", r.Bastion.User)
	}
	if r.Bastion.Port != "" {
		args = append(args, "-p", r.Bastion.Port)
	}
	if r.Bastion.Flags != "" {
		// BUG(mariano): This is a naive way of doing it as it doesn't
		// support strings, but it should work for most of the cases in ssh.
		// For more advance cases the package
		// github.com/kballard/go-shellquote can be used.
		fields := strings.Fields(r.Bastion.Flags)
		args = append(args, fields...)
	}
	args = append(args, r.Bastion.Hostname)
	if r.Bastion.Command != "" {
		args = append(args, sshutil.ProxyCommand(r.Bastion.Command, user, host, port))
	} else {
		args = append(args, "nc", host, port)
	}
	exec.Exec(sshPath, args...)
	return nil
}