modes

type Authenticator interface {
	// Password must be implemented to deal with password authentication.
	Password(ctx gliderssh.Context, user string, password string) bool
	// PublicKey must be implemented to deal with public key authentication.
	PublicKey(ctx gliderssh.Context, user string, key gliderssh.PublicKey) bool
}

type Mode interface {
	Authenticator
	Sessioner
}

type Sessioner interface {
	Subsystemer
	// Shell must be implemented to deal with shell session.
	Shell(session gliderssh.Session) error
	// Heredoc must be implemented to deal with heredoc session.
	//
	// heredoc is special block of code that contains multi-line strings that will be redirected to a stdin of a shell.
	// It request a shell, but doesn't allocate a pty.
	//
	// An example of heredoc is:
	//  cat <<EOF
	//      test123
	//  EOF
	Heredoc(session gliderssh.Session) error
	// Exec must be implemented to deal with exec session.
	Exec(session gliderssh.Session) error
}

type Subsystemer interface {
	// SFTP must be implemented to deal with SFTP session.
	SFTP(session gliderssh.Session) error
}