/*

 * Soft:        Keepalived is a failover program for the LVS project

 *              <www.linuxvirtualserver.org>. It monitor & manipulate

 *              a loadbalanced server pool using multi-layer checks.

 *

 * Part:        check_smtp.c include file.

 *

 * Author:      Alexandre Cassen, <acassen@linux-vs.org>

 *              Jeremy Rumpf, <jrumpf@heavyload.net>

 *

 *              This program is distributed in the hope that it will be useful,

 *              but WITHOUT ANY WARRANTY; without even the implied warranty of

 *              MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 *              See the GNU General Public License for more details.

 *

 *              This program is free software; you can redistribute it and/or

 *              modify it under the terms of the GNU General Public License

 *              as published by the Free Software Foundation; either version

 *              2 of the License, or (at your option) any later version.

 *

 * Copyright (C) 2001-2017 Alexandre Cassen, <acassen@gmail.com>

 */

#ifndef _CHECK_SMTP_H

#define _CHECK_SMTP_H

/* system includes */

#include <sys/types.h>

/* local includes */

#include "scheduler.h"

#include "check_api.h"

#define SMTP_BUFF_MAX		512U

typedef enum {

	SMTP_START,

	SMTP_HAVE_BANNER,

	SMTP_SENT_HELO,

	SMTP_RECV_HELO,

	SMTP_SENT_QUIT,

	SMTP_RECV_QUIT

} smtp_state_t;

#define SMTP_DEFAULT_HELO	"smtpchecker.keepalived.org"

/* Checker argument structure  */

typedef struct _smtp_checker {

	/* non per host config data goes here */

	const char			*helo_name;

	/* data buffer */

	char				buff[SMTP_BUFF_MAX];

	size_t				buff_ctr;

	smtp_state_t			state;

} smtp_checker_t;

/* macro utility */

#define FMT_SMTP_RS(H) (inet_sockaddrtopair (&(H)->dst))

/* Prototypes defs */

extern void install_smtp_check_keyword(void);

#ifdef THREAD_DUMP

extern void register_check_smtp_addresses(void);

#endif

#endif