/*********************************************************************************************************
** 函数名称: FATGetNextClus
** 功能描述: 返回FAT表指定簇的下一个簇号
**
** 输 入: Index：簇号
** 输 出: 下一个簇号
**
** 全局变量: 无
** 调用模块: 无
**
********************************************************************************************************/
Uint32 FATGetNextClus(Uint32 Index)
{
Uint16 temp, ByteIndex;
Uint32 SecIndex;
Uint8 *Buf;
Uint32 Rt;
if (Index >= (DiskInfo.ClusPerData))
{
return BAD_CLUS;
}
/* 计算扇区号和字节索引 */
switch (DiskInfo.FATType)
{
case FAT12:
SecIndex = Index * 3 / (2 * DiskInfo.BytsPerSec);
ByteIndex = ((Index * 3) / 2) - (SecIndex * DiskInfo.BytsPerSec);
SecIndex += DiskInfo.FATStartSec;
break;
case FAT16:
SecIndex = Index * 2 / DiskInfo.BytsPerSec + DiskInfo.FATStartSec;
ByteIndex = (Index * 2) & (DiskInfo.BytsPerSec - 1);
break;
case FAT32:
SecIndex = Index * 4 / DiskInfo.BytsPerSec + DiskInfo.FATStartSec;
ByteIndex = (Index * 4) & (DiskInfo.BytsPerSec - 1);
break;
default:
return BAD_CLUS;
}
Buf = OpenSec(SecIndex);
if (Buf == NULL)
{
return BAD_CLUS;
}
ReadSec(SecIndex, 0);
/* 读取FAT表数据 */
switch (DiskInfo.FATType)
{
case FAT12:
temp = Buf[ByteIndex];
ByteIndex++;
if (ByteIndex >= DiskInfo.BytsPerSec) /* 下一个字节是否在下一个扇区 */
{
Buf = OpenSec(SecIndex + 1);
if (Buf == NULL)
{
return BAD_CLUS;
}
ReadSec(SecIndex + 1, 0);
temp = temp | (Buf[0] << 8);
}
else
{
temp = temp | (Buf[ByteIndex] << 8);
}
if ((Index & 0x01) != 0) /* 判断哪12位有效 */
{
temp = temp >> 4;
}
else
{
// Test the security device
void TestSec()
{
UINT i;
LIST *secure_device_list;
Print("Secure Device Test Program\n"
"Copyright (c) SoftEther Corporation. All Rights Reserved.\n\n");
// Get the secure device list
secure_device_list = GetSecureDeviceList();
if (secure_device_list != NULL)
{
UINT use_device_id;
char tmp[MAX_SIZE];
Print("--- Secure Device List ---\n");
for (i = 0;i < LIST_NUM(secure_device_list);i++)
{
SECURE_DEVICE *dev = LIST_DATA(secure_device_list, i);
Print("%2u - %s\n", dev->Id, dev->DeviceName);
}
Print("\n");
Print("Device ID >");
GetLine(tmp, sizeof(tmp));
use_device_id = ToInt(tmp);
if (use_device_id == 0)
{
Print("Canceled.\n");
}
else
{
SECURE *sec = OpenSec(use_device_id);
Print("Opening Device...\n");
if (sec == NULL)
{
Print("OpenSec() Failed.\n");
}
else
{
Print("Opening Session...\n");
if (OpenSecSession(sec, 0) == false)
{
Print("OpenSecSession() Failed.\n");
}
else
{
while (true)
{
char pin[MAX_SIZE];
Print("PIN Code >");
GetLine(pin, sizeof(pin));
Trim(pin);
if (StrLen(pin) == 0)
{
Print("Canceled.\n");
break;
}
else
{
Print("Login...\n");
if (LoginSec(sec, pin))
{
TestSecMain(sec);
Print("Logout...\n");
LogoutSec(sec);
break;
}
else
{
Print("Login Failed. Please Try Again.\n");
}
}
}
Print("Closing Session...\n");
CloseSecSession(sec);
}
Print("Closing Device...\n");
CloseSec(sec);
}
}
ReleaseList(secure_device_list);
}
else
{
Print("GetSecureDeviceList() Error.\n");
}
}
