#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <httpfilt.h>
#include <iostream>
#include <fstream>

using namespace std; 

using namespace System;

DWORD DoSendResponse(HTTP_FILTER_CONTEXT * pfc, HTTP_FILTER_SEND_RESPONSE * pResponse);

BOOL WINAPI __stdcall GetFilterVersion(HTTP_FILTER_VERSION *pVer)
{
    pVer->dwFlags = ( SF_NOTIFY_ORDER_DEFAULT | SF_NOTIFY_SEND_RESPONSE );
    pVer->dwFilterVersion = HTTP_FILTER_REVISION;
    strcpy(pVer->lpszFilterDesc, "Replace Server Header ISAPI filter, Version 1.0");
    return TRUE;
}

DWORD WINAPI __stdcall HttpFilterProc(HTTP_FILTER_CONTEXT *pfc, DWORD NotificationType, VOID *pvData)
{
    switch (NotificationType)
    {
    case SF_NOTIFY_SEND_RESPONSE :
        return DoSendResponse(pfc, (HTTP_FILTER_SEND_RESPONSE *) pvData);
    default :
        break;
    }
    return SF_STATUS_REQ_NEXT_NOTIFICATION;
}

DWORD DoSendResponse(HTTP_FILTER_CONTEXT * pfc,HTTP_FILTER_SEND_RESPONSE * pResponse)
{
    System::IO::File::AppendAllText("c:\\abc.txt", "\r\n");

    char PATH_TRANSLATED[1024];
    DWORD cb;
    cb=sizeof(PATH_TRANSLATED);
    int len = 0;
    len = pfc->GetServerVariable(pfc, "PATH_TRANSLATED", PATH_TRANSLATED, &cb);
    String ^sPATH_TRANSLATED = gcnew String(PATH_TRANSLATED);

    System::IO::File::AppendAllText("c:\\abc.txt", sPATH_TRANSLATED);


    BOOL fServer = TRUE;
    DWORD dwServerError;
    fServer = pResponse->SetHeader(pfc, "Server:", "MyWebServer");
    if ( !fServer )
    {
        dwServerError = GetLastError();
        pfc->pFilterContext = (LPVOID)(DWORD64)pResponse->HttpStatus;
    }

    return SF_STATUS_REQ_NEXT_NOTIFICATION;
}