Zabbix

/*

** Zabbix

** Copyright (C) 2001-2022 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 "zbxjson.h"

#include "log.h"

#include "comms.h"

​

typedef struct

{

    zbx_uint64_t ibytes;

    zbx_uint64_t ipackets;

    zbx_uint64_t ierr;

    zbx_uint64_t idrop;

    zbx_uint64_t ififo;

    zbx_uint64_t iframe;

    zbx_uint64_t icompressed;

    zbx_uint64_t imulticast;

    zbx_uint64_t obytes;

    zbx_uint64_t opackets;

    zbx_uint64_t oerr;

    zbx_uint64_t odrop;

    zbx_uint64_t ocolls;

    zbx_uint64_t ofifo;

    zbx_uint64_t ocarrier;

    zbx_uint64_t ocompressed;

}

net_stat_t;

​

typedef struct

{

    struct addrinfo *ai;

    unsigned short  port;

    unsigned int    prefix_sz;

    unsigned char   mapped;

}

net_count_info_t;

​

#define IPV4_MAX_CIDR_PREFIX    32  /* max number of bits in IPv4 CIDR prefix */

#define IPV6_MAX_CIDR_PREFIX    128 /* max number of bits in IPv6 CIDR prefix */

​

#define NET_CONN_TYPE_TCP   0

#define NET_CONN_TYPE_UDP   1

​

#if HAVE_INET_DIAG

#   include <sys/socket.h>

#   include <linux/netlink.h>

#   include <linux/inet_diag.h>

​

enum

{

    STATE_UNKNOWN = 0,

    STATE_ESTABLISHED,

    STATE_SYN_SENT,

    STATE_SYN_RECV,

    STATE_FIN_WAIT1,

    STATE_FIN_WAIT2,

    STATE_TIME_WAIT,

    STATE_CLOSE,

    STATE_CLOSE_WAIT,

    STATE_LAST_ACK,

    STATE_LISTEN,

    STATE_CLOSING,

    STATE_MAXSTATES

};

​

enum

{

    NLERR_OK = 0,

    NLERR_UNKNOWN,

    NLERR_SOCKCREAT,

    NLERR_BADSEND,

    NLERR_BADRECV,

    NLERR_RECVTIMEOUT,