/* Hey EMACS -*- win32-c -*- */
/* libcalccables - link cable library, a part of the CalcForge project
* Copyright (C) 2007 Romain Lievin
*
* Some parts from dhasetup.c source code
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
This unit provides DhaHelper access routines for NT I/O port accesses.
*/
#include
#include
#include
#include "dha.h"
#include "./dha/dhahelper.h"
#define DHA_DRV_NAME "DhaHelper"
#if defined(__WIN32__) && !defined(_WIN64)
static void print_last_error(char *s)
{
LPTSTR lpMsgBuf;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) & lpMsgBuf, 0, NULL);
lpMsgBuf[strlen(lpMsgBuf)-2] = '\0';
printf("%s (%i -> %s)\n", s, (int)GetLastError(), lpMsgBuf);
}
int dha_detect(int* result)
{
HANDLE hDriver;
*result = 0;
hDriver = CreateFile("\\\\.\\DhaHelper", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if(hDriver == INVALID_HANDLE_VALUE)
{
hDriver = CreateFile("\\\\.\\DhaHelper", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if(hDriver != INVALID_HANDLE_VALUE)
{
CloseHandle(hDriver);
hDriver = INVALID_HANDLE_VALUE;
*result = 1;
}
}
else
{
CloseHandle(hDriver);
hDriver = INVALID_HANDLE_VALUE;
*result = 1;
}
printf(DHA_DRV_NAME "%sfound.\n", *result ? " " : " not ");
return 0;
}
int dha_enable(void)
{
HANDLE hDriver;
DWORD BytesReturned;
int iError;
int result = 0;
hDriver = CreateFile("\\\\.\\DhaHelper",
GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if(hDriver == INVALID_HANDLE_VALUE)
{
printf("Couldn't access " DHA_DRV_NAME " driver; Please ensure driver is installed/loaded.");
return -1;
}
iError = DeviceIoControl(hDriver, IOCTL_DHAHELPER_ENABLEDIRECTIO, NULL, 0, NULL, 0, &BytesReturned, NULL);
if(!iError)
{
print_last_error("DhaHelper: error %d occured in IOCTL_DHAHELPER_ENABLEDIRECTIO");
result = -1;
}
else
printf("I/O ports have been enabled.\n");
CloseHandle(hDriver);
hDriver = INVALID_HANDLE_VALUE;
return result;
}
int dha_disable(void)
{
HANDLE hDriver;
DWORD BytesReturned;
int iError;
int result = 0;
hDriver = CreateFile("\\\\.\\DhaHelper",
GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if(hDriver == INVALID_HANDLE_VALUE)
{
printf("Couldn't access " DHA_DRV_NAME " driver; Please ensure driver is installed/loaded.");
return -1;
}
iError = DeviceIoControl(hDriver, IOCTL_DHAHELPER_DISABLEDIRECTIO, NULL, 0, NULL, 0, &BytesReturned, NULL);
if(!iError)
{
print_last_error("DhaHelper: error %d occured in IOCTL_DHAHELPER_DISABLEDIRECTIO");
result = -1;
}
else
printf("I/O ports have been disabled.\n");
CloseHandle(hDriver);
hDriver = INVALID_HANDLE_VALUE;
return result;
}
#endif