MpqBlockTable.cpp

   1 // License information for this code is in license.txt
   2
   3 #include <windows.h>
   4 #include "SFmpqapi.h"
   5 #include "SFmpqInternal.h"
   6 #include "SFUtil.h"
   7 #include "MpqCrypt.h"
   8
   9 BOOL WriteBlockTable(MPQARCHIVE *mpqOpenArc)
  10 {
  11         DWORD tsz;
  12
  13         if (mpqOpenArc->MpqHeader.dwBlockTableSize == 0) return TRUE;
  14         if (!mpqOpenArc->lpBlockTable) return FALSE;
  15
  16         char *buffer = (char *)SFAlloc(sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize);
  17         if (buffer) {
  18                 memcpy(buffer,mpqOpenArc->lpBlockTable,sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize);
  19                 EncryptData((LPBYTE)buffer,sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize,dwBlockTableKey);
  20                 SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + mpqOpenArc->MpqHeader.dwBlockTableOffset + ((UINT64)mpqOpenArc->MpqHeader_Ex.wBlockTableOffsetHigh << 32), FILE_BEGIN);
  21                 WriteFile(mpqOpenArc->hFile,buffer,sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize,&tsz,0);
  22                 SFFree(buffer);
  23         }
  24         else {
  25                 EncryptData((LPBYTE)mpqOpenArc->lpBlockTable,sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize,dwBlockTableKey);
  26                 SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + mpqOpenArc->MpqHeader.dwBlockTableOffset + ((UINT64)mpqOpenArc->MpqHeader_Ex.wBlockTableOffsetHigh << 32), FILE_BEGIN);
  27                 WriteFile(mpqOpenArc->hFile,mpqOpenArc->lpBlockTable,sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize,&tsz,0);
  28                 DecryptData((LPBYTE)mpqOpenArc->lpBlockTable,sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize,dwBlockTableKey);
  29         }
  30
  31         return TRUE;
  32 }