///
/// @file ctrl2cap.c
/// @author wowocock
/// @date 2009-1-27
///
#include <wdm.h>
#include <ntddkbd.h>
#include "ctrl2cap.h"
typedef struct _C2P_DEV_EXT
{
// 这个结构的大小
ULONG NodeSize;
// 过滤设备对象
PDEVICE_OBJECT pFilterDeviceObject;
// 同时调用时的保护锁
KSPIN_LOCK IoRequestsSpinLock;
// 进程间同步处理
KEVENT IoInProgressEvent;
// 绑定的设备对象
PDEVICE_OBJECT TargetDeviceObject;
// 绑定前底层设备对象
PDEVICE_OBJECT LowerDeviceObject;
} C2P_DEV_EXT, *PC2P_DEV_EXT;
// flags for keyboard status
#define S_SHIFT 1
#define S_CAPS 2
#define S_NUM 4
static int kb_status = S_NUM;
void __stdcall print_keystroke(UCHAR sch)
{
UCHAR ch = 0;
int off = 0;
if ((sch & 0x80) == 0) //make
{
if ((sch < 0x47) ||
((sch >= 0x47 && sch < 0x54) && (kb_status & S_NUM))) // Num Lock
{
ch = asciiTbl[off+sch];
}
switch (sch)
{
case 0x3A:
kb_status ^= S_CAPS;
break;
case 0x2A:
case 0x36:
kb_status |= S_SHIFT;
break;
case 0x45:
kb_status ^= S_NUM;
}
}
else //break
