LGram16
dd97ddec92
Move git root from Client/ to src/ to track all source code: - Client: Game client source (moved to Client/Client/) - Server: Game server source - GameTools: Development tools - CryptoSource: Encryption utilities - database: Database scripts - Script: Game scripts - rylCoder_16.02.2008_src: Legacy coder tools - GMFont, Game: Additional resources 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
92 lines
2.0 KiB
C++
92 lines
2.0 KiB
C++
#include "NFNet.h"
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#include "NFPacket.h"
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#include "GZip/zlib.h"
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#pragma comment(lib,"zlib.lib")
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namespace NaveNet {
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NFPacket::NFPacket()
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{
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Init();
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}
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NFPacket::~NFPacket()
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{
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}
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VOID NFPacket::Init()
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{
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ZeroMemory(&m_Header, sizeof(PACKETHEADER));
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ZeroMemory(m_Packet, sizeof(m_Packet));
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}
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int NFPacket::EncryptPacket()
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{
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// 체크섬 생성순서.
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// 1. 헤더 생성 (사이즈및 커맨드 설정.)
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// 2. 암호화 및 압축
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// 3. 체크섬 생성.
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m_Header.CheckSum = ((m_Header.Command+m_Header.Size+m_Packet[0]+m_Packet[1])^0xA6F69E23)^0x62F2EA02;
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// 사이즈가 100바이트 이상이면 압축하고 체크섬 설정
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if(m_Header.Size >= 100)
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{
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// 압축하기
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// m_Header.Size 사이즈 재조정
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uLongf destLen = DEF_PACKETSIZE;;
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int srcLen = GetSize();
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char srcBuff[DEF_PACKETSIZE];
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memcpy(srcBuff, m_Packet, srcLen);
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compress2((Bytef*)m_Packet, &destLen, (Bytef*)srcBuff, srcLen, 5);
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m_Packet[destLen]=0;
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SetSize((USHORT)destLen);
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m_Header.CheckSum = m_Header.CheckSum|0xF0000000;
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}
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else
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m_Header.CheckSum = m_Header.CheckSum&0x0FFFFFFF;
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return m_Header.Size;
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}
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VOID NFPacket::DecryptPacket()
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{
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if(m_Header.CheckSum&0xF0000000)
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{
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// 압축풀기
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// m_Header.Size 사이즈 재조정
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uLongf destLen = DEF_PACKETSIZE;
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int srcLen = GetSize();
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char srcBuff[DEF_PACKETSIZE];
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memcpy(srcBuff, m_Packet, srcLen);
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uncompress((Bytef*)m_Packet, &destLen, (Bytef*)srcBuff, srcLen);
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m_Packet[destLen]=0;
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SetSize((USHORT)destLen);
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}
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// 체크섬 조정
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m_Header.CheckSum = m_Header.CheckSum&0x0FFFFFFF;
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}
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BOOL NFPacket::IsAliveChecksum()
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{
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DWORD CheckSum = ((m_Header.Command+m_Header.Size+m_Packet[0]+m_Packet[1])^0xA6F69E23)^0x62F2EA02;
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CheckSum = CheckSum&0x0FFFFFFF;
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if(m_Header.CheckSum == CheckSum)
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return TRUE;
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CHAR szBuff[32];
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sprintf(szBuff, "CheckSum : Len(%d), [%d,%d] %X = %X", m_Header.Size, m_Packet[0], m_Packet[1], m_Header.CheckSum, CheckSum);
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MessageBox(NULL, szBuff, "ERROR", MB_OK);
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return FALSE;
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}
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} |