Zabbix

/*

** 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 General Public License as published by

** the Free Software Foundation; either version 2 of the License, or

** (at your option) any later version.

**

** 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.

**

** You should have received a copy of the GNU General Public License

** along with this program; if not, write to the Free Software

** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

**/

​

#include "common.h"

#include "sysinfo.h"

​

#include "comms.h"

#include "log.h"

#include "cfg.h"

​

#include "net.h"

#include "zbxalgo.h"

​

int tcp_expect(const char *host, unsigned short port, int timeout, const char *request,

        int (*validate_func)(const char *), const char *sendtoclose, int *value_int)

{

    zbx_socket_t    s;

    const char  *buf;

    int     net, val = ZBX_TCP_EXPECT_OK;

​

    *value_int = 0;

​

    if (SUCCEED != (net = zbx_tcp_connect(&s, CONFIG_SOURCE_IP, host, port, timeout, ZBX_TCP_SEC_UNENCRYPTED, NULL,

            NULL)))

    {

        goto out;

    }

​

    if (NULL != request)

        net = zbx_tcp_send_raw(&s, request);

​

    if (NULL != validate_func && SUCCEED == net)

    {

        val = ZBX_TCP_EXPECT_FAIL;

​

        while (NULL != (buf = zbx_tcp_recv_line(&s)))

        {

            val = validate_func(buf);

​

            if (ZBX_TCP_EXPECT_OK == val)

                break;

​

            if (ZBX_TCP_EXPECT_FAIL == val)

            {

                zabbix_log(LOG_LEVEL_DEBUG, "TCP expect content error, received [%s]", buf);

                break;

            }

        }

    }

​

    if (NULL != sendtoclose && SUCCEED == net && ZBX_TCP_EXPECT_OK == val)

        (void)zbx_tcp_send_raw(&s, sendtoclose);

​

    if (SUCCEED == net && ZBX_TCP_EXPECT_OK == val)

        *value_int = 1;

​

    zbx_tcp_close(&s);

out:

    if (SUCCEED != net)

        zabbix_log(LOG_LEVEL_DEBUG, "TCP expect network error: %s", zbx_socket_strerror());

​

    return SYSINFO_RET_OK;

}

​

int NET_TCP_PORT(AGENT_REQUEST *request, AGENT_RESULT *result)

{

    unsigned short  port;

    int     value_int, ret;

    char        *ip_str, ip[MAX_ZBX_DNSNAME_LEN + 1], *port_str;

​

    if (2 < request->nparam)

    {

        SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));

        return SYSINFO_RET_FAIL;

    }