/*
 * Copyright (c) 2018 MariaDB Corporation Ab
 *
 * Use of this software is governed by the Business Source License included
 * in the LICENSE.TXT file and at www.mariadb.com/bsl11.
 *
 * Change Date: 2022-01-01
 *
 * On the date above, in accordance with the Business Source License, use
 * of this software will be governed by version 2 or later of the General
 * Public License.
 */
#pragma once
#include "pam_backend_auth.hh"

#include <stdint.h>
#include "../pam_auth_common.hh"

class PamBackendSession
{
public:
    PamBackendSession(const PamBackendSession& orig) = delete;
    PamBackendSession& operator=(const PamBackendSession&) = delete;

    PamBackendSession();
    bool extract(DCB* dcb, GWBUF* buffer);
    int  authenticate(DCB* dcb);

private:
    bool send_client_password(DCB* dcb);

    enum class State
    {
        INIT,
        RECEIVED_PROMT,
        PW_SENT,
        DONE
    };

    State   m_state {State::INIT}; /**< Authentication state*/
    uint8_t m_sequence {0};  /**< The next packet sequence number */
};