Zabbix

/*

** Zabbix

** Copyright (C) 2001-2023 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 "zbxicmpping.h"

​

#include <signal.h>

​

#include "zbxcomms.h"

#include "zbxexec.h"

#include "zbxstr.h"

#include "zbxip.h"

#include "zbxfile.h"

​

static const zbx_config_icmpping_t  *config_icmpping;

​

/* old official fping (2.4b2_to_ipv6) did not support source IP address */

/* old patched versions (2.4b2_to_ipv6) provided either -I or -S options */

/* since fping 3.x it provides -I option for binding to an interface and -S option for source IP address */

​

static ZBX_THREAD_LOCAL unsigned char   source_ip_checked;

static ZBX_THREAD_LOCAL const char  *source_ip_option;

#ifdef HAVE_IPV6

static ZBX_THREAD_LOCAL unsigned char   source_ip6_checked;

static ZBX_THREAD_LOCAL const char  *source_ip6_option;

#endif

​

#define FPING_UNINITIALIZED_VALUE   -2

static ZBX_THREAD_LOCAL int     packet_interval;

#ifdef HAVE_IPV6

static ZBX_THREAD_LOCAL int     packet_interval6;

static ZBX_THREAD_LOCAL int     fping_ipv6_supported;

#endif

​

static ZBX_THREAD_LOCAL time_t      fping_check_reset_at;   /* time of the last fping options expiration */

static ZBX_THREAD_LOCAL char        tmpfile_uniq[255] = {'\0'};

​

typedef struct

{

    ZBX_FPING_HOST  *hosts;

    int     hosts_count;

    int     requests_count;

    unsigned char   allow_redirect;

    int     rdns;

#ifdef HAVE_IPV6

#   define FPING_EXISTS 0x1

#   define FPING6_EXISTS    0x2

    char        fping_existence;