Zabbix

//go:build windows

// +build windows

​

/*

** Copyright (C) 2001-2025 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/>.

**/

​

package win32

​

import (

    "syscall"

    "unsafe"

​

    "golang.org/x/sys/windows"

)

​

var (

    hIphlp Hlib

​

    getIfTable2    uintptr

    freeMibTable   uintptr

    getIpAddrTable uintptr

    getTcpTable    uintptr

)

​

func init() {

    hIphlp = mustLoadLibrary("iphlpapi.dll")

​

    getIfTable2 = hIphlp.mustGetProcAddress("GetIfTable2")

    freeMibTable = hIphlp.mustGetProcAddress("FreeMibTable")

    getIpAddrTable = hIphlp.mustGetProcAddress("GetIpAddrTable")

    getTcpTable = hIphlp.mustGetProcAddress("GetTcpTable")

}

​

func GetIfTable2() (table *MIB_IF_TABLE2, err error) {

    ret, _, syserr := syscall.Syscall(getIfTable2, 1, uintptr(unsafe.Pointer(&table)), 0, 0)

    if ret != windows.NO_ERROR {

        return nil, syserr

    }

    return

}

​

func FreeMibTable(table *MIB_IF_TABLE2) {

    _, _, _ = syscall.Syscall(freeMibTable, 1, uintptr(unsafe.Pointer(table)), 0, 0)

}

​

// GetIpAddrTable calls win32 GetIpAddrTable function. Check if the returned size was less or equal to input size

// to determine if the buffer was large enough for the address table.

func GetIpAddrTable(table *MIB_IPADDRTABLE, sizeIn uint32, order bool) (sizeOut uint32, err error) {

    sizeOut = sizeIn

    ret, _, syserr := syscall.Syscall(getIpAddrTable, 3, uintptr(unsafe.Pointer(table)),

        uintptr(unsafe.Pointer(&sizeOut)), bool2uintptr(order))

​