Setting L2TP and PPTP ports of local RRAS service

This example gets and sets the L2TP and PPTP port configuration of the local RRAS service. It assumes the calling process has sufficient privileges to access the local RRAS service.

#include <windows.h>
#include <stdio.h>
#include "mprapi.h"
#include <tchar.h>
#pragma comment(lib, "mprapi.lib")

int __cdecl main(){

 DWORD dwRes = ERROR_SUCCESS;
 PMPR_SERVER_1 pMprServer = NULL;
 MPR_SERVER_1 MprServer;
 MPR_SERVER_HANDLE hMprServer = NULL;

 // Connect to the local RRAS server
 dwRes = MprAdminServerConnect(NULL, &hMprServer);
 if(dwRes != ERROR_SUCCESS){
 //
 //Handle errors here
 //
 return dwRes;
 }

 // Collect L2TP and PPTP port information from local RRAS server
 dwRes = MprAdminServerGetInfo(hMprServer, 1, (LPBYTE*)&pMprServer);
 if(dwRes != ERROR_SUCCESS){
 //
 //Handle errors here
 //
 MprAdminServerDisconnect(hMprServer);
 return dwRes;
 }

 if(!pMprServer->dwL2tpPortFlags)
 wprintf(L"The local machine contains %d L2TP port(s) that is(are) not configured for RRAS.\n", pMprServer->dwNumL2tpPorts);
 else
 wprintf(L"The local machine contains %d L2TP port(s) that is(are) configured for RRAS.\n", pMprServer->dwNumL2tpPorts);

 if(!pMprServer->dwPptpPortFlags)
 wprintf(L"The local machine contains %d PPTP port(s) that is(are) not configured for RRAS.\n", pMprServer->dwNumPptpPorts);
 else
 wprintf(L"The local machine contains %d PPTP port(s) that is(are) configured for RRAS.\n\n", pMprServer->dwNumPptpPorts);

 // Save original L2TP and PPTP configuration info
 MprServer.dwL2tpPortFlags = pMprServer->dwL2tpPortFlags;
 MprServer.dwPptpPortFlags = pMprServer->dwPptpPortFlags;
 MprServer.dwNumL2tpPorts = pMprServer->dwNumL2tpPorts;
 MprServer.dwNumPptpPorts = pMprServer->dwNumPptpPorts;

 // Modify L2TP and PPTP port information on the local RRAS server
 wprintf(L"Disabling RRAS enabled L2TP and PPTP ports on the local system.");
 pMprServer->dwL2tpPortFlags = FALSE;
 pMprServer->dwPptpPortFlags = FALSE;
 dwRes = MprAdminServerSetInfo(hMprServer, 1, (LPBYTE)pMprServer);
 if(dwRes != ERROR_SUCCESS_REBOOT_REQUIRED && dwRes != ERROR_SUCCESS){
 //
 // Handle errors here
 //
 wprintf(L".....ERROR\n");
 MprAdminBufferFree(pMprServer);
 MprAdminServerDisconnect(hMprServer);
 return dwRes;
 }
 wprintf(L".....OK\n");
 
 //Cleanup
 pMprServer->dwL2tpPortFlags = MprServer.dwL2tpPortFlags;
 pMprServer->dwPptpPortFlags = MprServer.dwPptpPortFlags;
 pMprServer->dwNumL2tpPorts = MprServer.dwNumL2tpPorts;
 pMprServer->dwNumPptpPorts = MprServer.dwNumPptpPorts;
 dwRes = MprAdminServerSetInfo(hMprServer, 1, (LPBYTE)pMprServer);
 
 MprAdminBufferFree(pMprServer);
 MprAdminServerDisconnect(hMprServer);
 return dwRes;
}