Zabbix

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** 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 Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

#ifndef ZABBIX_ASYNCPOLLER_H

#define ZABBIX_ASYNCPOLLER_H

​

#include "zbxcommon.h"

​

#define ZBX_RES_CONF_FILE "/etc/resolv.conf"

​

#ifdef HAVE_LIBEVENT

#include <event2/dns.h>

#include <event2/event.h>

​

typedef enum

{

    ZBX_ASYNC_TASK_READ,

    ZBX_ASYNC_TASK_WRITE,

    ZBX_ASYNC_TASK_STOP,

    ZBX_ASYNC_TASK_RESOLVE_REVERSE

}

zbx_async_task_state_t;

​

​

typedef enum

{

    ZABBIX_ASYNC_STEP_DEFAULT = 0,

    ZABBIX_ASYNC_STEP_REVERSE_DNS,

}

zbx_async_rdns_step_t;

​

typedef enum

{

    ZABBIX_ASYNC_RESOLVE_REVERSE_DNS_NO = 0,

    ZABBIX_ASYNC_RESOLVE_REVERSE_DNS_YES,

}

zbx_async_resolve_reverse_dns_t;

​

typedef int (*zbx_async_task_process_cb_t)(short event, void *data, int *fd, struct evutil_addrinfo **current_ai,

        const char *addr, char *dnserr, struct event *timeout_event);

typedef void (*zbx_async_task_clear_cb_t)(void *data);

​

zbx_async_task_state_t  zbx_async_poller_get_task_state_for_event(short event);

void            zbx_async_poller_add_task(struct event_base *ev, struct evdns_base *dnsbase, const char *addr,

        void *data, int timeout, zbx_async_task_process_cb_t process_cb, zbx_async_task_clear_cb_t clear_cb);

const char      *zbx_resolv_conf_errstr(int error);

const char      *zbx_get_event_string(short event);

const char      *zbx_task_state_to_str(zbx_async_task_state_t task_state);

void            zbx_async_dns_update_host_addresses(struct evdns_base *dnsbase);

#endif

#endif