74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
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/*++
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Copyright (c) 2000, Microsoft Corporation
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Module Name:
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enablerouter.c
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Abstract:
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This module implements a system utility for dynamically enabling forwarding
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on Windows 2000 systems using the EnableRouter and UnenableRouter routines.
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Author:
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Abolade Gbadegesin (aboladeg) 26-March-1999
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Revision History:
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--*/
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#include <windows.h>
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#include <stdio.h>
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#include <stdlib.h>
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int __cdecl
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main(
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int argc,
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char* argv[]
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)
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{
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HINSTANCE Hinstance = LoadLibrary("IPHLPAPI.DLL");
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if (!Hinstance) {
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printf("LoadLibrary: %d\n", GetLastError());
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} else {
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DWORD (WINAPI* EnableRouter)(PHANDLE, LPOVERLAPPED) =
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(DWORD (WINAPI*)(PHANDLE, LPOVERLAPPED))
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GetProcAddress(Hinstance, "EnableRouter");
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DWORD (WINAPI* UnenableRouter)(LPOVERLAPPED, LPDWORD) =
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(DWORD (WINAPI*)(LPOVERLAPPED, LPDWORD))
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GetProcAddress(Hinstance, "UnenableRouter");
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if (!EnableRouter || !UnenableRouter) {
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printf("GetProcAddress: %d\n", GetLastError());
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} else {
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DWORD Error;
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HANDLE Handle;
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OVERLAPPED Overlapped;
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DWORD Count;
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ZeroMemory(&Overlapped, sizeof(Overlapped));
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Overlapped.hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
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if (!Overlapped.hEvent) {
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printf("CreateEvent: %d\n", GetLastError());
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} else {
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Error = EnableRouter(&Handle, &Overlapped);
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if (Error != ERROR_IO_PENDING) {
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printf("EnableRouter: %d\n", Error);
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} else {
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printf("Forwarding is now enabled.");
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printf("Press <Enter> to disable forwarding...");
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getchar();
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Error = UnenableRouter(&Overlapped, &Count);
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if (Error) {
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printf("UnenableRouter: %d\n", Error);
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} else {
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printf("UnenableRouter: %d references left\n", Count);
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}
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CloseHandle(Overlapped.hEvent);
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}
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}
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}
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FreeLibrary(Hinstance);
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}
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return 0;
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}
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