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 "zbxsysinfo.h"

#include "../sysinfo.h"

​

#include "zbxstr.h"

#include "zbxnum.h"

#include "log.h"

#include "zbxjson.h"

​

/* __stdcall calling convention is used for GetIfEntry2(). In order to declare a */

/* pointer to GetIfEntry2() we have to expand NETIOPAPI_API macro manually since */

/* part of it must be together with the pointer name in the parentheses.         */

typedef NETIO_STATUS (NETIOAPI_API_ *pGetIfEntry2_t)(PMIB_IF_ROW2 Row);

​

/* GetIfEntry2() is available since Windows Vista and Windows Server 2008. In    */

/* earlier Windows releases this pointer remains set to NULL and GetIfEntry() is */

/* used directly instead.                                                        */

static pGetIfEntry2_t   pGetIfEntry2 = NULL;

​

/* GetIfEntry2() and GetIfEntry() work with different MIB interface structures.  */

/* Use zbx_ifrow_t variables and zbx_ifrow_*() functions below instead of        */

/* version specific MIB interface API.                                           */

typedef struct

{

    MIB_IFROW   *ifRow;     /* 32-bit counters */

    MIB_IF_ROW2 *ifRow2;    /* 64-bit counters, supported since Windows Vista, Server 2008 */

}

zbx_ifrow_t;

​

/******************************************************************************

 *                                                                            *

 * Purpose: initialize the zbx_ifrow_t variable                               *

 *                                                                            *

 * Parameters:                                                                *

 *     pIfRow      - [IN/OUT] pointer to zbx_ifrow_t variable with all        *

 *                            members set to NULL                             *

 *                                                                            *

 * Comments: allocates memory, call zbx_ifrow_clean() with the same pointer   *

 *           to free it                                                       *

 *                                                                            *

 ******************************************************************************/

static void zbx_ifrow_init(zbx_ifrow_t *pIfRow)

{

​

    HMODULE     module;