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;
}

Related topics

MIB_OPAQUE_INFO

MIB_OPAQUE_QUERY

MprAdminMIBEntryGet