100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
#include "typedef.h"
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#include "Param.h"
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#ifdef _SERVER
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DWORD PM_HandleParam( DWORD dwParam1, DWORD dwParam2 )
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{
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DWORD dwRet = dwParam1;
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int iShift = dwParam2 % 32; //移位个数
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DWORD dwLoRev=0xFFFFFFFF;
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for( int i=0; i<iShift; i++ ){
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dwLoRev >>= 1; //低32-x位
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}
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DWORD dwHiRev = 0xFFFFFFFF - dwLoRev; //高x位
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DWORD dwTemp1 = dwRet & dwHiRev; //取高x位
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dwRet = (dwRet<<iShift) | (dwTemp1>>(32-iShift)); //左移x位 + 高x位右移32-x位
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DWORD dwTemp2 = ~(dwRet & dwLoRev) & dwLoRev; //低32-x位取反
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return (dwRet & dwHiRev) | dwTemp2; //高x位 + 低32-x位取反
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}
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#else
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DWORD PM_GetParam( void* param1, void* param2, DWORD dwParam )
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{
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DWORD dwRet = (((long)param1&0xFFFF)<<16) | ((long)param2&0xFFFF); //分别取低16位
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int iShift = dwParam % 32; //移位个数
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DWORD dwLoMask=0, dwLoRev=0xFFFFFFFF;
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for( int i=0; i<iShift; i++ ){
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dwLoMask = (dwLoMask<<1) + 1; //低x位
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dwLoRev >>= 1; //低32-x位
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}
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DWORD dwHiRev = 0xFFFFFFFF - dwLoRev; //高x位
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//取反加密
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DWORD dwTemp1 = ~(dwRet & dwLoRev) & dwLoRev; //低32-x位取反
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dwRet = (dwRet & dwHiRev) | dwTemp1; //高x位 + 低32-x位取反
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//移位
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DWORD dwTemp2 = dwRet & dwLoMask; //低x位
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dwRet = (dwRet>>iShift) | (dwTemp2<<(32-iShift)); //右移x位 + 低x位左移32-x位
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return dwRet;
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}
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void PM_SetParam( void** param1, void** param2, DWORD dwParam )
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{
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*param1 = (void*)(((long)*param1 & (long)0xFFFFFFFFFFFF0000) + ( dwParam>>16 ));
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*param2 = (void*)(((long)*param2 & (long)0xFFFFFFFFFFFF0000) + ( dwParam&0xFFFF ));
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}
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DWORD g_dwMMParam = 0, //MM传递参数
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g_dwVerifyParam = 0; //CS传递参数
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void PM_SetMMParam( void* param1, void* param2 )
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{
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g_dwMMParam = (((long)param1&0xFFFF)<<16) | ((long)param2&0xFFFF); //分别取低16位
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g_dwVerifyParam = 0;
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}
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DWORD PM_GetMMParam( DWORD dwParam )
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{
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DWORD dwRet = g_dwMMParam;
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int iShift = dwParam % 32; //移位个数
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DWORD dwLoMask=0, dwLoRev=0xFFFFFFFF;
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for( int i=0; i<iShift; i++ ){
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dwLoMask = (dwLoMask<<1) + 1; //低x位
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dwLoRev >>= 1; //低32-x位
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}
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DWORD dwHiRev = 0xFFFFFFFF - dwLoRev; //高x位
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//取反加密
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DWORD dwTemp1 = ~(dwRet & dwLoRev) & dwLoRev; //低32-x位取反
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dwRet = (dwRet & dwHiRev) | dwTemp1; //高x位 + 低32-x位取反
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//移位
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DWORD dwTemp2 = dwRet & dwLoMask; //低x位
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dwRet = (dwRet>>iShift) | (dwTemp2<<(32-iShift)); //右移x位 + 低x位左移32-x位
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return dwRet;
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}
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void PM_SetVerifyParam( DWORD dwParam )
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{
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g_dwVerifyParam = dwParam==0 ? g_dwMMParam : dwParam;
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}
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void PM_VerifyParam( void** param1, void** param2 )
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{
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*param1 = (void*)(((long)*param1 & (long)0xFFFFFFFFFFFF0000) + ( g_dwVerifyParam>>16 ));
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*param2 = (void*)(((long)*param2 & (long)0xFFFFFFFFFFFF0000) + ( g_dwVerifyParam&0xFFFF ));
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}
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#endif //_SERVER
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