mirror of
https://github.com/TrinityCore/TrinityCore.git
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682 lines
21 KiB
C++
682 lines
21 KiB
C++
/*****************************************************************************/
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/* CascCommon.cpp Copyright (c) Ladislav Zezula 2014 */
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/*---------------------------------------------------------------------------*/
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/* Common functions for CascLib */
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/*---------------------------------------------------------------------------*/
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/* Date Ver Who Comment */
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/* -------- ---- --- ------- */
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/* 29.04.14 1.00 Lad The first version of CascCommon.cpp */
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/*****************************************************************************/
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#define __CASCLIB_SELF__
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#include "../CascLib.h"
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#include "../CascCommon.h"
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//-----------------------------------------------------------------------------
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// Conversion to uppercase/lowercase
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// Converts ASCII characters to lowercase
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// Converts backslash (0x5C) to normal slash (0x2F)
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unsigned char AsciiToLowerTable_Slash[256] =
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{
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
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0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F,
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0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F,
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0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
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0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x5B, 0x2F, 0x5D, 0x5E, 0x5F,
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0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
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0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F,
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0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F,
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0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F,
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0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF,
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0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF,
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0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
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0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
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0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
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0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF
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};
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// Converts ASCII characters to uppercase
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// Converts slash (0x2F) to backslash (0x5C)
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unsigned char AsciiToUpperTable_BkSlash[256] =
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{
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
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0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x5C,
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0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F,
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0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F,
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0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F,
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0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F,
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0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F,
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0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F,
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0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F,
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0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF,
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0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF,
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0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
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0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
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0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
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0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF
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};
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// Converts ASCII characters to hexa digit
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unsigned char AsciiToHexTable[128] =
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{
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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};
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unsigned char IntToHexChar[] = "0123456789abcdef";
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//-----------------------------------------------------------------------------
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// GetCascError/SetCascError support for non-Windows platform
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static DWORD dwLastError = ERROR_SUCCESS;
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DWORD GetCascError()
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{
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#ifdef CASCLIB_PLATFORM_WINDOWS
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return GetLastError();
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#else
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return dwLastError;
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#endif
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}
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void SetCascError(DWORD dwErrCode)
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{
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#ifdef CASCLIB_PLATFORM_WINDOWS
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SetLastError(dwErrCode);
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#endif
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dwLastError = dwErrCode;
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}
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//-----------------------------------------------------------------------------
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// Linear data stream manipulation
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LPBYTE CaptureInteger16_BE(LPBYTE pbDataPtr, LPBYTE pbDataEnd, PDWORD PtrValue)
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{
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// Is there enough data?
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if((pbDataPtr + sizeof(USHORT)) > pbDataEnd)
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return NULL;
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// Convert data from Little endian to
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PtrValue[0] = ConvertBytesToInteger_2(pbDataPtr);
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// Return the pointer to data following after the integer
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return pbDataPtr + sizeof(USHORT);
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}
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LPBYTE CaptureInteger32(LPBYTE pbDataPtr, LPBYTE pbDataEnd, PDWORD PtrValue)
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{
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// Is there enough data?
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if((pbDataPtr + sizeof(DWORD)) > pbDataEnd)
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return NULL;
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// Give data
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PtrValue[0] = *(PDWORD)pbDataPtr;
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// Return the pointer to data following after the integer
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return pbDataPtr + sizeof(DWORD);
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}
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LPBYTE CaptureInteger32_BE(LPBYTE pbDataPtr, LPBYTE pbDataEnd, PDWORD PtrValue)
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{
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// Is there enough data?
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if((pbDataPtr + sizeof(DWORD)) > pbDataEnd)
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return NULL;
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// Convert data from Little endian to
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PtrValue[0] = ConvertBytesToInteger_4(pbDataPtr);
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// Return the pointer to data following after the integer
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return pbDataPtr + sizeof(DWORD);
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}
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LPBYTE CaptureByteArray(LPBYTE pbDataPtr, LPBYTE pbDataEnd, size_t nLength, LPBYTE pbOutput)
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{
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// Is there enough data?
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if((pbDataPtr + nLength) > pbDataEnd)
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return NULL;
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// Give data
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memcpy(pbOutput, pbDataPtr, nLength);
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// Return the pointer to data following after the integer
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return pbDataPtr + nLength;
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}
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LPBYTE CaptureContentKey(LPBYTE pbDataPtr, LPBYTE pbDataEnd, PCONTENT_KEY * PtrCKey)
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{
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// Is there enough data?
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if((pbDataPtr + sizeof(CONTENT_KEY)) > pbDataEnd)
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return NULL;
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// Give data
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PtrCKey[0] = (PCONTENT_KEY)pbDataPtr;
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// Return the pointer to data following after the integer
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return pbDataPtr + sizeof(CONTENT_KEY);
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}
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LPBYTE CaptureEncodedKey(LPBYTE pbEKey, LPBYTE pbData, BYTE EKeyLength)
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{
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// Two usual lengths of EKey
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assert(EKeyLength == 0x09 || EKeyLength == 0x10);
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// Copy the first 0x09 bytes
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if(EKeyLength >= 0x09)
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{
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pbEKey[0x00] = pbData[0x00];
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pbEKey[0x01] = pbData[0x01];
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pbEKey[0x02] = pbData[0x02];
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pbEKey[0x03] = pbData[0x03];
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pbEKey[0x04] = pbData[0x04];
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pbEKey[0x05] = pbData[0x05];
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pbEKey[0x06] = pbData[0x06];
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pbEKey[0x07] = pbData[0x07];
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pbEKey[0x08] = pbData[0x08];
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if(EKeyLength == 0x10)
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{
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pbEKey[0x09] = pbData[0x09];
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pbEKey[0x0A] = pbData[0x0A];
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pbEKey[0x0B] = pbData[0x0B];
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pbEKey[0x0C] = pbData[0x0C];
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pbEKey[0x0D] = pbData[0x0D];
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pbEKey[0x0E] = pbData[0x0E];
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pbEKey[0x0F] = pbData[0x0F];
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}
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else
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{
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pbEKey[0x09] = 0;
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pbEKey[0x0A] = 0;
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pbEKey[0x0B] = 0;
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pbEKey[0x0C] = 0;
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pbEKey[0x0D] = 0;
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pbEKey[0x0E] = 0;
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pbEKey[0x0F] = 0;
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}
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}
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return pbData + EKeyLength;
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}
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LPBYTE CaptureArray_(LPBYTE pbDataPtr, LPBYTE pbDataEnd, LPBYTE * PtrArray, size_t ItemSize, size_t ItemCount)
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{
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size_t ArraySize = ItemSize * ItemCount;
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// Is there enough data?
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if((pbDataPtr + ArraySize) > pbDataEnd)
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return NULL;
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// Give data
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PtrArray[0] = pbDataPtr;
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// Return the pointer to data following after the array
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return pbDataPtr + ArraySize;
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}
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//-----------------------------------------------------------------------------
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// String copying and conversion
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void CascStrCopy(char * szTarget, size_t cchTarget, const char * szSource, size_t cchSource)
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{
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size_t cchToCopy;
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if (cchTarget > 0)
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{
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// Make sure we know the length
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if (cchSource == -1)
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cchSource = strlen(szSource);
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cchToCopy = CASCLIB_MIN((cchTarget - 1), cchSource);
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// Copy the string
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memcpy(szTarget, szSource, cchToCopy);
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szTarget[cchToCopy] = 0;
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}
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}
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void CascStrCopy(char * szTarget, size_t cchTarget, const wchar_t * szSource, size_t cchSource)
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{
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size_t cchToCopy;
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if (cchTarget > 0)
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{
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// Make sure we know the length
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if (cchSource == -1)
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cchSource = wcslen(szSource);
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cchToCopy = CASCLIB_MIN((cchTarget - 1), cchSource);
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wcstombs(szTarget, szSource, cchToCopy);
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szTarget[cchToCopy] = 0;
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}
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}
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void CascStrCopy(wchar_t * szTarget, size_t cchTarget, const char * szSource, size_t cchSource)
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{
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size_t cchToCopy;
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if (cchTarget > 0)
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{
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// Make sure we know the length
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if (cchSource == -1)
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cchSource = strlen(szSource);
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cchToCopy = CASCLIB_MIN((cchTarget - 1), cchSource);
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mbstowcs(szTarget, szSource, cchToCopy);
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szTarget[cchToCopy] = 0;
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}
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}
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void CascStrCopy(wchar_t * szTarget, size_t cchTarget, const wchar_t * szSource, size_t cchSource)
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{
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size_t cchToCopy;
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if (cchTarget > 0)
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{
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// Make sure we know the length
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if (cchSource == -1)
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cchSource = wcslen(szSource);
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cchToCopy = CASCLIB_MIN((cchTarget - 1), cchSource);
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memcpy(szTarget, szSource, cchToCopy * sizeof(wchar_t));
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szTarget[cchToCopy] = 0;
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}
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}
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//-----------------------------------------------------------------------------
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// Safe version of s(w)printf
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size_t CascStrPrintf(char * buffer, size_t nCount, const char * format, ...)
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{
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char * buffend;
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va_list argList;
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// Start the argument list
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va_start(argList, format);
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#ifdef CASCLIB_PLATFORM_WINDOWS
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StringCchVPrintfExA(buffer, nCount, &buffend, NULL, 0, format, argList);
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// buffend = buffer + vsnprintf(buffer, nCount, format, argList);
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#else
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buffend = buffer + vsnprintf(buffer, nCount, format, argList);
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#endif
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// End the argument list
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va_end(argList);
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return (buffend - buffer);
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}
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size_t CascStrPrintf(wchar_t * buffer, size_t nCount, const wchar_t * format, ...)
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{
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wchar_t * buffend;
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va_list argList;
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// Start the argument list
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va_start(argList, format);
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#ifdef CASCLIB_PLATFORM_WINDOWS
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StringCchVPrintfExW(buffer, nCount, &buffend, NULL, 0, format, argList);
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// buffend = buffer + vswprintf(buffer, nCount, format, argList);
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#else
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buffend = buffer + vswprintf(buffer, nCount, format, argList);
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#endif
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// End the argument list
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va_end(argList);
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return (buffend - buffer);
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}
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//-----------------------------------------------------------------------------
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// String allocation
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char * CascNewStr(const char * szString, size_t nCharsToReserve)
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{
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char * szNewString = NULL;
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size_t nLength;
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if(szString != NULL)
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{
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nLength = strlen(szString);
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szNewString = CASC_ALLOC<char>(nLength + nCharsToReserve + 1);
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if(szNewString != NULL)
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{
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memcpy(szNewString, szString, nLength);
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szNewString[nLength] = 0;
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}
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}
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return szNewString;
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}
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wchar_t * CascNewStr(const wchar_t * szString, size_t nCharsToReserve)
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{
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wchar_t * szNewString = NULL;
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size_t nLength;
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if(szString != NULL)
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{
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nLength = wcslen(szString);
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szNewString = CASC_ALLOC<wchar_t>(nLength + nCharsToReserve + 1);
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if(szNewString != NULL)
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{
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memcpy(szNewString, szString, nLength * sizeof(wchar_t));
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szNewString[nLength] = 0;
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}
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}
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return szNewString;
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}
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LPSTR CascNewStrT2A(LPCTSTR szString, size_t nCharsToReserve)
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{
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LPSTR szNewString = NULL;
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size_t nLength;
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if(szString != NULL)
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{
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nLength = _tcslen(szString);
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szNewString = CASC_ALLOC<char>(nLength + nCharsToReserve + 1);
|
|
if(szNewString != NULL)
|
|
{
|
|
CascStrCopy(szNewString, nLength + nCharsToReserve + 1, szString, nLength);
|
|
// szNewString[nLength] = 0;
|
|
}
|
|
}
|
|
|
|
return szNewString;
|
|
}
|
|
|
|
LPTSTR CascNewStrA2T(LPCSTR szString, size_t nCharsToReserve)
|
|
{
|
|
LPTSTR szNewString = NULL;
|
|
size_t nLength;
|
|
|
|
if(szString != NULL)
|
|
{
|
|
nLength = strlen(szString);
|
|
szNewString = CASC_ALLOC<TCHAR>(nLength + nCharsToReserve + 1);
|
|
if(szNewString != NULL)
|
|
{
|
|
CascStrCopy(szNewString, nLength + nCharsToReserve + 1, szString, nLength);
|
|
// szNewString[nLength] = 0;
|
|
}
|
|
}
|
|
|
|
return szNewString;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// String merging
|
|
|
|
LPTSTR GetLastPathPart(LPTSTR szWorkPath)
|
|
{
|
|
size_t nLength = _tcslen(szWorkPath);
|
|
|
|
// Go one character back
|
|
if(nLength > 0)
|
|
nLength--;
|
|
|
|
// Cut ending (back)slashes, if any
|
|
while(nLength > 0 && (szWorkPath[nLength] == _T('\\') || szWorkPath[nLength] == _T('/')))
|
|
nLength--;
|
|
|
|
// Cut the last path part
|
|
while(nLength > 0)
|
|
{
|
|
// End of path?
|
|
if(szWorkPath[nLength] == _T('\\') || szWorkPath[nLength] == _T('/'))
|
|
{
|
|
return szWorkPath + nLength;
|
|
}
|
|
|
|
// Go one character back
|
|
nLength--;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
bool CutLastPathPart(LPTSTR szWorkPath)
|
|
{
|
|
// Get the last part of the path
|
|
szWorkPath = GetLastPathPart(szWorkPath);
|
|
if(szWorkPath == NULL)
|
|
return false;
|
|
|
|
szWorkPath[0] = 0;
|
|
return true;
|
|
}
|
|
|
|
size_t CombinePath(LPTSTR szBuffer, size_t nMaxChars, va_list argList)
|
|
{
|
|
CASC_PATH<TCHAR> Path(PATH_SEP_CHAR);
|
|
LPCTSTR szFragment;
|
|
bool bWithSeparator = false;
|
|
|
|
// Combine all parts of the path here
|
|
while((szFragment = va_arg(argList, LPTSTR)) != NULL)
|
|
{
|
|
Path.AppendString(szFragment, bWithSeparator);
|
|
bWithSeparator = true;
|
|
}
|
|
|
|
return Path.Copy(szBuffer, nMaxChars);
|
|
}
|
|
|
|
size_t CombinePath(LPTSTR szBuffer, size_t nMaxChars, ...)
|
|
{
|
|
va_list argList;
|
|
size_t nLength;
|
|
|
|
va_start(argList, nMaxChars);
|
|
nLength = CombinePath(szBuffer, nMaxChars, argList);
|
|
va_end(argList);
|
|
|
|
return nLength;
|
|
}
|
|
|
|
size_t NormalizeFileName(const unsigned char * NormTable, char * szNormName, const char * szFileName, size_t cchMaxChars)
|
|
{
|
|
char * szNormNameEnd = szNormName + cchMaxChars;
|
|
size_t i;
|
|
|
|
// Normalize the file name: ToLower + BackSlashToSlash
|
|
for(i = 0; szFileName[0] != 0 && szNormName < szNormNameEnd; i++)
|
|
*szNormName++ = NormTable[*szFileName++];
|
|
|
|
// Terminate the string
|
|
szNormName[0] = 0;
|
|
return i;
|
|
}
|
|
|
|
size_t NormalizeFileName_UpperBkSlash(char * szNormName, const char * szFileName, size_t cchMaxChars)
|
|
{
|
|
return NormalizeFileName(AsciiToUpperTable_BkSlash, szNormName, szFileName, cchMaxChars);
|
|
}
|
|
|
|
size_t NormalizeFileName_LowerSlash(char * szNormName, const char * szFileName, size_t cchMaxChars)
|
|
{
|
|
return NormalizeFileName(AsciiToLowerTable_Slash, szNormName, szFileName, cchMaxChars);
|
|
}
|
|
|
|
ULONGLONG CalcNormNameHash(const char * szNormName, size_t nLength)
|
|
{
|
|
uint32_t dwHashHigh = 0;
|
|
uint32_t dwHashLow = 0;
|
|
|
|
// Calculate the HASH value of the normalized file name
|
|
hashlittle2(szNormName, nLength, &dwHashHigh, &dwHashLow);
|
|
return ((ULONGLONG)dwHashHigh << 0x20) | dwHashLow;
|
|
}
|
|
|
|
ULONGLONG CalcFileNameHash(const char * szFileName)
|
|
{
|
|
char szNormName[MAX_PATH+1];
|
|
size_t nLength;
|
|
|
|
// Normalize the file name - convert to uppercase, slashes to backslashes
|
|
nLength = NormalizeFileName_UpperBkSlash(szNormName, szFileName, MAX_PATH);
|
|
|
|
// Calculate hash from the normalized name
|
|
return CalcNormNameHash(szNormName, nLength);
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// File name utilities
|
|
|
|
bool IsFileDataIdName(const char * szFileName, DWORD & FileDataId)
|
|
{
|
|
const char * szFilePtr;
|
|
BYTE BinaryValue[4];
|
|
|
|
// If the file name begins with "File", then a decimal file data ID must follow
|
|
if(!strncmp(szFileName, "File", 4))
|
|
{
|
|
DWORD Accumulator = 0;
|
|
|
|
for(szFilePtr = szFileName + 4; szFilePtr[0] != 0 && szFilePtr[0] != '.'; szFilePtr++)
|
|
{
|
|
if(!('0' <= szFilePtr[0] && szFilePtr[0] <= '9'))
|
|
return false;
|
|
Accumulator = (Accumulator * 10) + (szFilePtr[0] - '0');
|
|
}
|
|
|
|
if(szFilePtr[0] == '.' || szFilePtr[0] == 0)
|
|
{
|
|
FileDataId = Accumulator;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// If the file name begins with "FILE", then a hexadecimal file data ID must follow
|
|
if(!strncmp(szFileName, "FILE", 4) && strlen(szFileName) >= 0x0C)
|
|
{
|
|
// Convert the hexadecimal number to integer
|
|
if(BinaryFromString(szFileName+4, 8, BinaryValue) == ERROR_SUCCESS)
|
|
{
|
|
// Must be followed by an extension or end-of-string
|
|
if(szFileName[0x0C] == 0 || szFileName[0x0C] == '.')
|
|
{
|
|
FileDataId = ConvertBytesToInteger_4(BinaryValue);
|
|
return (FileDataId != CASC_INVALID_ID);
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool IsFileCKeyEKeyName(const char * szFileName, LPBYTE PtrKeyBuffer)
|
|
{
|
|
size_t nLength = strlen(szFileName);
|
|
|
|
if(nLength == MD5_STRING_SIZE)
|
|
{
|
|
if(BinaryFromString(szFileName, MD5_STRING_SIZE, PtrKeyBuffer) == ERROR_SUCCESS)
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool CascCheckWildCard(const char * szString, const char * szWildCard)
|
|
{
|
|
const char * szWildCardPtr;
|
|
|
|
while(szWildCard && szWildCard[0])
|
|
{
|
|
// If there is '?' in the wildcard, we skip one char
|
|
while(szWildCard[0] == '?')
|
|
{
|
|
if(szString[0] == 0)
|
|
return false;
|
|
|
|
szWildCard++;
|
|
szString++;
|
|
}
|
|
|
|
// Handle '*'
|
|
szWildCardPtr = szWildCard;
|
|
if(szWildCardPtr[0] != 0)
|
|
{
|
|
if(szWildCardPtr[0] == '*')
|
|
{
|
|
while(szWildCardPtr[0] == '*')
|
|
szWildCardPtr++;
|
|
|
|
if(szWildCardPtr[0] == 0)
|
|
return true;
|
|
|
|
if(AsciiToUpperTable_BkSlash[szWildCardPtr[0]] == AsciiToUpperTable_BkSlash[szString[0]])
|
|
{
|
|
if(CascCheckWildCard(szString, szWildCardPtr))
|
|
return true;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(AsciiToUpperTable_BkSlash[szWildCardPtr[0]] != AsciiToUpperTable_BkSlash[szString[0]])
|
|
return false;
|
|
|
|
szWildCard = szWildCardPtr + 1;
|
|
}
|
|
|
|
if(szString[0] == 0)
|
|
return false;
|
|
szString++;
|
|
}
|
|
else
|
|
{
|
|
return (szString[0] == 0) ? true : false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Hashing functions
|
|
|
|
bool CascIsValidMD5(LPBYTE pbMd5)
|
|
{
|
|
PDWORD Int32Array = (PDWORD)pbMd5;
|
|
|
|
// The MD5 is considered invalid if it is zeroed
|
|
return (Int32Array[0] | Int32Array[1] | Int32Array[2] | Int32Array[3]) ? true : false;
|
|
}
|
|
|
|
bool CascVerifyDataBlockHash(void * pvDataBlock, DWORD cbDataBlock, LPBYTE expected_md5)
|
|
{
|
|
MD5_CTX md5_ctx;
|
|
BYTE md5_digest[MD5_HASH_SIZE];
|
|
|
|
// Don't verify the block if the MD5 is not valid.
|
|
if(!CascIsValidMD5(expected_md5))
|
|
return true;
|
|
|
|
// Calculate the MD5 of the data block
|
|
MD5_Init(&md5_ctx);
|
|
MD5_Update(&md5_ctx, pvDataBlock, cbDataBlock);
|
|
MD5_Final(md5_digest, &md5_ctx);
|
|
|
|
// Does the MD5's match?
|
|
return (memcmp(md5_digest, expected_md5, MD5_HASH_SIZE) == 0);
|
|
}
|
|
|
|
void CascCalculateDataBlockHash(void * pvDataBlock, DWORD cbDataBlock, LPBYTE md5_hash)
|
|
{
|
|
MD5_CTX md5_ctx;
|
|
|
|
MD5_Init(&md5_ctx);
|
|
MD5_Update(&md5_ctx, pvDataBlock, cbDataBlock);
|
|
MD5_Final(md5_hash, &md5_ctx);
|
|
}
|