#include "typedef.h"
#include "Param.h"

#ifdef _SERVER
DWORD PM_HandleParam( DWORD dwParam1, DWORD dwParam2 )
{
	DWORD dwRet = dwParam1;
	int iShift = dwParam2 % 32; //移位个数

	DWORD dwLoRev=0xFFFFFFFF;
	for( int i=0; i<iShift; i++ ){
		dwLoRev >>= 1; //低32-x位
	}

	DWORD dwHiRev = 0xFFFFFFFF - dwLoRev; //高x位
	DWORD dwTemp1 = dwRet & dwHiRev; //取高x位

	dwRet = (dwRet<<iShift) | (dwTemp1>>(32-iShift)); //左移x位 + 高x位右移32-x位

	DWORD dwTemp2 = ~(dwRet & dwLoRev) & dwLoRev; //低32-x位取反

	return  (dwRet & dwHiRev) | dwTemp2; //高x位 + 低32-x位取反
}

#else

DWORD PM_GetParam( void* param1, void* param2, DWORD dwParam )
{
	DWORD dwRet = (((long)param1&0xFFFF)<<16) | ((long)param2&0xFFFF); //分别取低16位
	int iShift = dwParam % 32;	//移位个数

	DWORD dwLoMask=0, dwLoRev=0xFFFFFFFF;
	for( int i=0; i<iShift; i++ ){
		dwLoMask = (dwLoMask<<1) + 1; //低x位
		dwLoRev >>= 1; //低32-x位
	}

	DWORD dwHiRev = 0xFFFFFFFF - dwLoRev; //高x位

	//取反加密
	DWORD dwTemp1 = ~(dwRet & dwLoRev) & dwLoRev; //低32-x位取反
	dwRet = (dwRet & dwHiRev) | dwTemp1; //高x位 + 低32-x位取反
	//移位
	DWORD dwTemp2 = dwRet & dwLoMask;	//低x位
	dwRet = (dwRet>>iShift) | (dwTemp2<<(32-iShift)); //右移x位 + 低x位左移32-x位

	return dwRet;
}

void PM_SetParam( void** param1, void** param2, DWORD dwParam )
{
	*param1 = (void*)(((long)*param1 & (long)0xFFFFFFFFFFFF0000) + ( dwParam>>16 ));
	*param2 = (void*)(((long)*param2 & (long)0xFFFFFFFFFFFF0000) + ( dwParam&0xFFFF ));
}

DWORD g_dwMMParam = 0, //MM传递参数
	g_dwVerifyParam = 0; //CS传递参数

void PM_SetMMParam( void* param1, void* param2 )
{
	g_dwMMParam = (((long)param1&0xFFFF)<<16) | ((long)param2&0xFFFF); //分别取低16位
	g_dwVerifyParam = 0;
}

DWORD PM_GetMMParam( DWORD dwParam )
{
	DWORD dwRet = g_dwMMParam;
	int iShift = dwParam % 32;	//移位个数

	DWORD dwLoMask=0, dwLoRev=0xFFFFFFFF;
	for( int i=0; i<iShift; i++ ){
		dwLoMask = (dwLoMask<<1) + 1; //低x位
		dwLoRev >>= 1; //低32-x位
	}

	DWORD dwHiRev = 0xFFFFFFFF - dwLoRev; //高x位

	//取反加密
	DWORD dwTemp1 = ~(dwRet & dwLoRev) & dwLoRev; //低32-x位取反
	dwRet = (dwRet & dwHiRev) | dwTemp1; //高x位 + 低32-x位取反
	//移位
	DWORD dwTemp2 = dwRet & dwLoMask;	//低x位
	dwRet = (dwRet>>iShift) | (dwTemp2<<(32-iShift)); //右移x位 + 低x位左移32-x位

	return dwRet;
}

void PM_SetVerifyParam( DWORD dwParam )
{
	g_dwVerifyParam = dwParam==0 ? g_dwMMParam : dwParam;
}

void PM_VerifyParam( void** param1, void** param2 )
{
	*param1 = (void*)(((long)*param1 & (long)0xFFFFFFFFFFFF0000) + ( g_dwVerifyParam>>16 ));
	*param2 = (void*)(((long)*param2 & (long)0xFFFFFFFFFFFF0000) + ( g_dwVerifyParam&0xFFFF ));
}

#endif //_SERVER