LGram16
e067522598
Game client codebase including: - CharacterActionControl: Character and creature management - GlobalScript: Network, items, skills, quests, utilities - RYLClient: Main client application with GUI and event handlers - Engine: 3D rendering engine (RYLGL) - MemoryManager: Custom memory allocation - Library: Third-party dependencies (DirectX, boost, etc.) - Tools: Development utilities 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
468 lines
12 KiB
C++
468 lines
12 KiB
C++
#include <windows.h>
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#include <fstream>
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#include <crtdbg.h>
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#include <tchar.h>
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#include "Crc32Static.h"
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using namespace std;
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// Static CRC table
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unsigned long CCrc32Static::s_arrdwCrc32Table[256] =
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{
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0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,
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0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
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0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
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0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
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0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
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0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
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0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,
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0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
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0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
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0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
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0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,
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0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
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0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,
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0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
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0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
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0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
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0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,
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0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
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0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,
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0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
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0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
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0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
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0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,
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0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
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0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
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0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
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0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
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0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
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0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
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0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
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0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,
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0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
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0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
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0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
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0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
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0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
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0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,
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0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
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0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
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0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
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0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,
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0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
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0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,
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0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
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0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
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0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
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0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,
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0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
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0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,
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0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
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0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
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0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
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0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,
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0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
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0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
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0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
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0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
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0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
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0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
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0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
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0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,
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0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
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0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
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0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D,
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};
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//***********************************************
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CCrc32Static::CCrc32Static()
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{
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}
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//***********************************************
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CCrc32Static::~CCrc32Static()
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{
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}
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//***********************************************
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inline void CCrc32Static::CalcCrc32(const BYTE byte, unsigned long &dwCrc32)
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{
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dwCrc32 = ((dwCrc32) >> 8) ^ s_arrdwCrc32Table[(byte) ^ ((dwCrc32) & 0x000000FF)];
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}
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//***********************************************
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bool CCrc32Static::GetFileSizeQW(const HANDLE hFile, QWORD &qwSize)
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{
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_ASSERTE(hFile != INVALID_HANDLE_VALUE);
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bool bSuccess = true;
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try
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{
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unsigned long dwLo = 0, dwHi = 0;
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dwLo = GetFileSize(hFile, &dwHi);
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if(dwLo == INVALID_FILE_SIZE && GetLastError() != NO_ERROR)
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{
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bSuccess = false;
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qwSize = 0;
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}
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else
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{
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qwSize = MAKEQWORD(dwHi, dwLo);
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}
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}
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catch(...)
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{
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bSuccess = false;
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}
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return bSuccess;
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}
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//***********************************************
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unsigned long CCrc32Static::StringCrc32(LPCTSTR szString, unsigned long &dwCrc32)
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{
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_ASSERTE(szString);
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unsigned long dwErrorCode = NO_ERROR;
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dwCrc32 = 0xFFFFFFFF;
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try
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{
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while(*szString != _T('\0'))
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{
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CalcCrc32((BYTE)*szString, dwCrc32);
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szString++;
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}
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}
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catch(...)
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{
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// An unknown exception happened
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dwErrorCode = ERROR_CRC;
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}
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dwCrc32 = ~dwCrc32;
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return dwErrorCode;
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}
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//***********************************************
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unsigned long CCrc32Static::FileCrc32Streams(LPCTSTR szFilename, unsigned long &dwCrc32)
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{
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#if UNICODE || _UNICODE
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return ERROR_NOT_SUPPORTED;
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#else
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_ASSERTE(szFilename);
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_ASSERTE(lstrlen(szFilename));
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unsigned long dwErrorCode = NO_ERROR;
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ifstream file;
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dwCrc32 = 0xFFFFFFFF;
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try
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{
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// Open the file
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// file.open(szFilename, ios::in | ios::nocreate | ios::binary, filebuf::sh_read);
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file.open(szFilename, ios::in | ios::binary);
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if(file.is_open())
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{
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char buffer[MAX_BUFFER_SIZE];
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int nLoop, nCount;
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nCount = file.read(buffer, sizeof(buffer)).gcount();
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while(nCount)
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{
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for(nLoop = 0; nLoop < nCount; nLoop++)
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CalcCrc32(buffer[nLoop], dwCrc32);
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nCount = file.read(buffer, sizeof(buffer)).gcount();
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}
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file.close();
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}
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}
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catch(...)
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{
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// An unknown exception happened
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dwErrorCode = ERROR_CRC;
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}
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if(file.is_open()) file.close();
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dwCrc32 = ~dwCrc32;
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return dwErrorCode;
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#endif
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}
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//***********************************************
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unsigned long CCrc32Static::FileCrc32Win32(LPCTSTR szFilename, unsigned long &dwCrc32)
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{
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_ASSERTE(szFilename);
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_ASSERTE(lstrlen(szFilename));
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unsigned long dwErrorCode = NO_ERROR;
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HANDLE hFile = NULL;
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dwCrc32 = 0xFFFFFFFF;
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try
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{
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// Open the file
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hFile = CreateFile(szFilename,
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GENERIC_READ,
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FILE_SHARE_READ,
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NULL,
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OPEN_EXISTING,
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FILE_ATTRIBUTE_ARCHIVE | FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_SEQUENTIAL_SCAN,
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NULL);
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if(hFile == INVALID_HANDLE_VALUE)
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dwErrorCode = GetLastError();
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else
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{
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BYTE buffer[MAX_BUFFER_SIZE];
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unsigned long dwBytesRead, dwLoop;
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BOOL bSuccess = ReadFile(hFile, buffer, sizeof(buffer), &dwBytesRead, NULL);
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while(bSuccess && dwBytesRead)
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{
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for(dwLoop = 0; dwLoop < dwBytesRead; dwLoop++)
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CalcCrc32(buffer[dwLoop], dwCrc32);
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bSuccess = ReadFile(hFile, buffer, sizeof(buffer), &dwBytesRead, NULL);
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}
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}
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}
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catch(...)
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{
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// An unknown exception happened
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dwErrorCode = ERROR_CRC;
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}
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if(hFile != NULL) CloseHandle(hFile);
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dwCrc32 = ~dwCrc32;
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return dwErrorCode;
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}
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//***********************************************
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unsigned long CCrc32Static::FileCrc32Filemap(LPCTSTR szFilename, unsigned long &dwCrc32)
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{
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_ASSERTE(szFilename);
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_ASSERTE(lstrlen(szFilename));
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unsigned long dwErrorCode = NO_ERROR;
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HANDLE hFile = NULL, hFilemap = NULL;
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dwCrc32 = 0xFFFFFFFF;
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try
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{
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// Open the file
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hFile = CreateFile(szFilename,
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GENERIC_READ,
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FILE_SHARE_READ,
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NULL,
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OPEN_EXISTING,
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FILE_ATTRIBUTE_ARCHIVE | FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_SEQUENTIAL_SCAN,
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NULL);
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if(hFile == INVALID_HANDLE_VALUE)
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dwErrorCode = GetLastError();
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else
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{
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QWORD qwFileSize = 0, qwFileOffset = 0;
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unsigned long dwByteCount, dwViewSize;
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unsigned long dwBaseAddress;
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// Get the file size
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if(!GetFileSizeQW(hFile, qwFileSize))
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dwErrorCode = ERROR_BAD_LENGTH;
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else if(qwFileSize != 0) // We cannot CRC zero byte files
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{
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// Create the file mapping
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hFilemap = CreateFileMapping(hFile,
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NULL,
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PAGE_READONLY,
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0,
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0,
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NULL);
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if(hFilemap == NULL)
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dwErrorCode = GetLastError();
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else
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{
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LPBYTE pByte;
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// Loop while we map a section of the file and CRC it
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while(qwFileSize > 0)
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{
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if(qwFileSize < MAX_VIEW_SIZE)
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dwViewSize = LODWORD(qwFileSize);
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else
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dwViewSize = MAX_VIEW_SIZE;
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dwBaseAddress = (unsigned long)MapViewOfFile(hFilemap,
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FILE_MAP_READ,
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HIDWORD(qwFileOffset),
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LODWORD(qwFileOffset),
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dwViewSize);
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dwByteCount = dwViewSize;
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pByte = (LPBYTE)dwBaseAddress;
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while(dwByteCount-- > 0)
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{
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CalcCrc32(*pByte, dwCrc32);
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pByte++;
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}
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UnmapViewOfFile((LPVOID)dwBaseAddress);
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qwFileOffset += dwViewSize;
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qwFileSize -= dwViewSize;
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}
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}
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}
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}
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}
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catch(...)
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{
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// An unknown exception happened
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dwErrorCode = ERROR_CRC;
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}
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if(hFile != NULL) CloseHandle(hFile);
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if(hFilemap != NULL) CloseHandle(hFilemap);
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dwCrc32 = ~dwCrc32;
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return dwErrorCode;
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}
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//***********************************************
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unsigned long CCrc32Static::FileCrc32Assembly(LPCTSTR szFilename, unsigned long &dwCrc32)
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{
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_ASSERTE(szFilename);
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_ASSERTE(lstrlen(szFilename));
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unsigned long dwErrorCode = NO_ERROR;
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HANDLE hFile = NULL;
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dwCrc32 = 0xFFFFFFFF;
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try
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{
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// Open the file
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hFile = CreateFile(szFilename,
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GENERIC_READ,
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FILE_SHARE_READ,
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NULL,
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OPEN_EXISTING,
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FILE_ATTRIBUTE_ARCHIVE | FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_SEQUENTIAL_SCAN,
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NULL);
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if(hFile == INVALID_HANDLE_VALUE)
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dwErrorCode = GetLastError();
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else
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{
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// There is a bug in the Microsoft compilers where inline assembly
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// code cannot access static member variables. This is a work around
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// for that bug. For more info see Knowledgebase article Q88092
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LPVOID ptrCrc32Table = &s_arrdwCrc32Table;
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BYTE buffer[MAX_BUFFER_SIZE];
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unsigned long dwBytesRead;
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BOOL bSuccess = ReadFile(hFile, buffer, sizeof(buffer), &dwBytesRead, NULL);
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while(bSuccess && dwBytesRead)
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{
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// Register use:
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// eax - CRC32 value
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// ebx - a lot of things
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// ecx - CRC32 value
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// edx - address of end of buffer
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// esi - address of start of buffer
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// edi - CRC32 table
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__asm
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{
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// Save the esi and edi registers
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push esi
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push edi
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mov eax, dwCrc32 // Load the pointer to dwCrc32
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mov ecx, [eax] // Dereference the pointer to load dwCrc32
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mov edi, ptrCrc32Table // Load the CRC32 table
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lea esi, buffer // Load buffer
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mov ebx, dwBytesRead // Load dwBytesRead
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lea edx, [esi + ebx] // Calculate the end of the buffer
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crc32loop:
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xor eax, eax // Clear the eax register
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mov bl, byte ptr [esi] // Load the current source byte
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mov al, cl // Copy crc value into eax
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inc esi // Advance the source pointer
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xor al, bl // Create the index into the CRC32 table
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shr ecx, 8
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mov ebx, [edi + eax * 4] // Get the value out of the table
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xor ecx, ebx // xor with the current byte
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cmp edx, esi // Have we reached the end of the buffer?
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jne crc32loop
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// Restore the edi and esi registers
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pop edi
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pop esi
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mov eax, dwCrc32 // Load the pointer to dwCrc32
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mov [eax], ecx // Write the result
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}
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bSuccess = ReadFile(hFile, buffer, sizeof(buffer), &dwBytesRead, NULL);
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}
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}
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}
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catch(...)
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{
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// An unknown exception happened
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dwErrorCode = ERROR_CRC;
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}
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if(hFile != NULL) CloseHandle(hFile);
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dwCrc32 = ~dwCrc32;
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return dwErrorCode;
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}
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//***********************************************
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unsigned long CCrc32Static::BufferCrc32(const char *szBuffer, size_t size, unsigned long &dwCrc32)
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{
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_ASSERTE(szBuffer);
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unsigned long dwErrorCode = NO_ERROR;
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dwCrc32 = 0xFFFFFFFF;
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try
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{
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for (size_t nIndex = 0; nIndex < size; ++nIndex)
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{
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CalcCrc32((BYTE)*szBuffer, dwCrc32);
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++szBuffer;
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}
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}
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catch (...)
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{
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// An unknown exception happened
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dwErrorCode = ERROR_CRC;
|
|
}
|
|
|
|
dwCrc32 = ~dwCrc32;
|
|
|
|
return dwErrorCode;
|
|
}
|