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 "zbxsysinfo.h"

#include "../sysinfo.h"

​

#include "zbxjson.h"

#include "zbxstr.h"

​

#include <unistd.h>

#include <stropts.h>

#include <sys/dlpi.h>

#include <sys/dlpi_ext.h>

#include <sys/mib.h>

​

static char buf_ctl[1024];

​

/* Low Level Discovery needs a way to get the list of network interfaces available */

/* on the monitored system. HP-UX versions starting from 11.31 have if_nameindex() */

/* available in libc, older versions have it in libipv6 which we do not want to    */

/* depend on. So for older versions we use different code to get that list.        */

/* More information:                                                               */

/* h20000.www2.hp.com/bc/docs/support/SupportManual/c02258083/c02258083.pdf        */

​

static struct strbuf    ctlbuf =

{

    sizeof(buf_ctl),

    0,

    buf_ctl

};

​

#if HPUX_VERSION < 1131

​

#define ZBX_IF_SEP  ','

​

static void add_if_name(char **if_list, size_t *if_list_alloc, size_t *if_list_offset, const char *name)

{

    if (FAIL == zbx_str_in_list(*if_list, name, ZBX_IF_SEP))

    {

        if ('\0' != **if_list)

            zbx_chrcpy_alloc(if_list, if_list_alloc, if_list_offset, ZBX_IF_SEP);

​

        zbx_strcpy_alloc(if_list, if_list_alloc, if_list_offset, name);

    }

}

​

static int  get_if_names(char **if_list, size_t *if_list_alloc, size_t *if_list_offset)

{

    int         s, ifreq_size, numifs, i, family = AF_INET;

    struct sockaddr     *from;

    u_char          *buffer = NULL;

    struct ifconf       ifc;

    struct ifreq        *ifr;

    struct if_laddrconf lifc;

    struct if_laddrreq  *lifr;

​

    if (-1 == (s = socket(family, SOCK_DGRAM, 0)))

        return FAIL;

​

    ifc.ifc_buf = 0;

    ifc.ifc_len = 0;

​

    if (0 == ioctl(s, SIOCGIFCONF, (caddr_t)&ifc) && 0 != ifc.ifc_len)

        ifreq_size = 2 * ifc.ifc_len;

    else

        ifreq_size = 2 * 512;

​

    buffer = zbx_malloc(buffer, ifreq_size);

    memset(buffer, 0, ifreq_size);

​

    ifc.ifc_buf = (caddr_t)buffer;

    ifc.ifc_len = ifreq_size;

​

    if (-1 == ioctl(s, SIOCGIFCONF, &ifc))

        goto next;

​

    /* check all IPv4 interfaces */

    ifr = (struct ifreq *)ifc.ifc_req;

    while ((u_char *)ifr < (u_char *)(buffer + ifc.ifc_len))

    {