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Obtaining the MIB II Interfaces Table

The following code uses MprAdminMIBEntryGet to obtain the MIB II interfaces table from the local machine.

#include <windows.h>
#include <mprapi.h>
#include <iprtrmib.h>

#pragma comment(lib, "mprapi.lib")

void main()
{
    HANDLE            _hMibSrv = INVALID_HANDLE_VALUE;  
    MIB_OPAQUE_QUERY  MibOpaqueQuery; 
    PMIB_OPAQUE_INFO  pMibOpaqueInfo = NULL; 
    DWORD             dwInSize, dwOutSize, dwResult; 
    PMIB_IFTABLE      pIntfTable; 
    
    MibOpaqueQuery.dwVarId = IF_TABLE; 
    dwInSize = sizeof( MIB_OPAQUE_QUERY ); 
    dwOutSize = 0; 
    
    dwResult = MprAdminMIBEntryGet ( _hMibSrv, 
                                    PID_IP, 
                                    IPRTRMGR_PID, 
                                    (PVOID)&MibOpaqueQuery, 
                                    dwInSize, 
                                    (PVOID *)&pMibOpaqueInfo, 
                                    &dwOutSize );

    if ( dwResult != NO_ERROR )
        return;
    
    if ( pMibOpaqueInfo == NULL ) 
        return; 
    
    pIntfTable = ( PMIB_IFTABLE ) pMibOpaqueInfo -> rgbyData;
}


#include <windows.h>
#include <stdio.h>
#include "Iphlpapi.h"

int __cdecl main(){

    MIB_SERVER_HANDLE hMibSrv = NULL;  
    MIB_OPAQUE_QUERY MibOpaqueQuery; 
    PMIB_OPAQUE_INFO pMibOpaqueInfo = NULL; 
    DWORD dwInSize, dwOutSize, dwRes; 
    PMIB_IFTABLE pIntfTable; 
    
    MibOpaqueQuery.dwVarId = IF_TABLE; 
    dwInSize = sizeof(MIB_OPAQUE_QUERY); 
    dwOutSize = 0; 
    
    // Connect to the MIB server to obtain the hMibSrv handle
    dwRes = MprAdminMIBServerConnect(NULL, &hMibSrv);    
    if (dwRes != NO_ERROR){
        wprintf(L"ERROR: Unable to connect to the MIB server specified.\n");
        return ERROR_SUCCESS;
    }

    // Retrieve the MIB interfaces table. The local RRAS service MUST be running or this call will fail.
    dwRes = MprAdminMIBEntryGet(hMibSrv, PID_IP, IPRTRMGR_PID, (PVOID)&MibOpaqueQuery, dwInSize, (PVOID*)&pMibOpaqueInfo, &dwOutSize);
    if (dwRes != NO_ERROR){
        wprintf(L"ERROR: Unable to retrieve the MIB interface table.\n");
        return ERROR_SUCCESS;
    }

    // Disconnect from the MIB server to release the hMibSrv handle
    MprAdminMIBServerDisconnect(hMibSrv);

    if (dwRes != NO_ERROR)
        return ERROR_SUCCESS;
    
    if (pMibOpaqueInfo == NULL) 
        return ERROR_SUCCESS; 
    
    pIntfTable = (PMIB_IFTABLE)pMibOpaqueInfo->rgbyData;

    // Print out the name and description of each MIB interface in the table
    wprintf(L"There were %d MIB table records found:\n", pIntfTable->dwNumEntries);
    for(UINT i=0; i < pIntfTable->dwNumEntries; i++){
        wprintf(L"%d\t%s\t", i, pIntfTable->table[i].wszName, pIntfTable->table[i].bDescr);
        printf("%s\n", pIntfTable->table[i].bDescr);
    }

    return ERROR_SUCCESS;
}

MIB_OPAQUE_INFO

MIB_OPAQUE_QUERY

MprAdminMIBEntryGet