Zabbix

/*

** Copyright (C) 2001-2024 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/>.

**/

​

#include <net/route.h>

#include <net/if.h>

#include <net/if_dl.h>

#include <net/if_types.h>

​

#include "zbxsysinfo.h"

#include "../sysinfo.h"

​

#include "zbxjson.h"

​

static void get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info)

{

    int i;

​

    for (i = 0; i < RTAX_MAX; i++)

    {

        if (addrs & (1 << i))

        {

            rti_info[i] = sa;

            sa = (struct sockaddr *)((char *)(sa) + RT_ROUNDUP(sa->sa_len));

        }

        else

            rti_info[i] = NULL;

    }

}

​

static int  get_ifdata(const char *if_name,

                zbx_uint64_t *ibytes, zbx_uint64_t *ipackets,

                zbx_uint64_t *ierrors, zbx_uint64_t *idropped,

                zbx_uint64_t *obytes, zbx_uint64_t *opackets,

                zbx_uint64_t *oerrors, zbx_uint64_t *tbytes,

                zbx_uint64_t *tpackets, zbx_uint64_t *terrors,

                zbx_uint64_t *icollisions, char **error)

{

    static size_t       olen;

    static char     *buf = NULL;

    int         ret = SYSINFO_RET_FAIL;

    int         mib[6] = { CTL_NET, AF_ROUTE, 0, 0, NET_RT_IFLIST, 0 };

    size_t          len;

    char            name[IFNAMSIZ + 1];

    char            *next, *end, *cp;

    struct if_msghdr    *ifm;

    struct rt_msghdr    *rtm;

    struct if_data      *ifd = NULL;

    struct sockaddr     *sa, *rti_info[RTAX_MAX];

    struct sockaddr_dl  *sdl;

​

    if (NULL == if_name || '\0' == *if_name)

    {