1
0
forked from metin2/server
server/game/src/ClientPackageCryptInfo.h

117 lines
2.6 KiB
C++

#ifndef __INC_CLIENTPACKAGE_CRYPTINFO_H
#define __INC_CLIENTPACKAGE_CRYPTINFO_H
#include <unordered_map>
#pragma pack(1)
typedef struct SSupplementaryDataBlockInfo
{
DWORD dwPackageIdentifier;
DWORD dwFileIdentifier;
std::vector<BYTE> vecSDBStream;
void Serialize( BYTE* pStream )
{
memcpy(pStream, &dwPackageIdentifier, sizeof(DWORD));
memcpy(pStream+4, &dwFileIdentifier, sizeof(DWORD));
BYTE bSize = vecSDBStream.size();
memcpy(pStream+8, &bSize, sizeof(BYTE));
memcpy(pStream+9, &vecSDBStream[0], bSize);
}
DWORD GetSerializedSize() const
{
return sizeof(DWORD)*2 + sizeof(BYTE) + vecSDBStream.size();
}
} TSupplementaryDataBlockInfo;
#pragma pack()
class CClientPackageCryptInfo
{
public:
CClientPackageCryptInfo();
~CClientPackageCryptInfo();
bool LoadPackageCryptInfo( const char* pCryptInfoDir );
void GetPackageCryptKeys( BYTE** ppData, int& iDataSize );
bool GetRelatedMapSDBStreams(const char* pMapName, BYTE** ppData, int& iDataSize );
private:
bool LoadPackageCryptFile( const char* pCryptFile );
private:
int m_nCryptKeyPackageCnt;
std::vector<BYTE> m_vecPackageCryptKeys;
BYTE* m_pSerializedCryptKeyStream;
typedef struct SPerFileSDBInfo
{
SPerFileSDBInfo() : m_pSerializedStream(NULL) {}
~SPerFileSDBInfo()
{
if(m_pSerializedStream)
{
delete[]m_pSerializedStream;
}
}
DWORD GetSize() const
{
DWORD dwSize = 4; //initial vecSDBInfo count
for(int i = 0; i < (int)vecSDBInfos.size(); ++i)
{
dwSize += vecSDBInfos[i].GetSerializedSize();
}
return dwSize;
}
BYTE* GetSerializedStream()
{
//NOTE : SDB Data isn`t updated during runtime. ( in case of file reloading all data is cleared & recreated )
//it`s not safe but due to performance benefit we don`t do re-serialize.
if(m_pSerializedStream)
return m_pSerializedStream;
m_pSerializedStream = new BYTE[GetSize()];
int iWrittenOffset = 0;
int iSDBInfoSize = vecSDBInfos.size();
//write size
memcpy( m_pSerializedStream, &iSDBInfoSize, sizeof(int) );
iWrittenOffset += sizeof(int);
for(int i = 0; i < iSDBInfoSize; ++i)
{
vecSDBInfos[i].Serialize( m_pSerializedStream + iWrittenOffset );
iWrittenOffset += vecSDBInfos[i].GetSerializedSize();
}
return m_pSerializedStream;
}
std::vector<TSupplementaryDataBlockInfo> vecSDBInfos;
private:
BYTE* m_pSerializedStream;
} TPerFileSDBInfo;
typedef std::unordered_map<std::string, TPerFileSDBInfo > TPackageSDBMap; //key: related map name
TPackageSDBMap m_mapPackageSDB;
};
#endif //__INC_CLIENTPACKAGE_CRYPTINFO_H