MpqHashTable.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 WriteHashTable(MPQARCHIVE *mpqOpenArc)
  10 {
  11         DWORD tsz;
  12
  13         char *buffer = (char *)SFAlloc(sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize);
  14         if (buffer) {
  15                 memcpy(buffer,mpqOpenArc->lpHashTable,sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize);
  16                 EncryptData((LPBYTE)buffer,sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize,dwHashTableKey);
  17                 SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + mpqOpenArc->MpqHeader.dwHashTableOffset + ((UINT64)mpqOpenArc->MpqHeader_Ex.wHashTableOffsetHigh << 32), FILE_BEGIN);
  18                 WriteFile(mpqOpenArc->hFile,buffer,sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize,&tsz,0);
  19                 SFFree(buffer);
  20         }
  21         else {
  22                 EncryptData((LPBYTE)mpqOpenArc->lpHashTable,sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize,dwHashTableKey);
  23                 SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + mpqOpenArc->MpqHeader.dwHashTableOffset + ((UINT64)mpqOpenArc->MpqHeader_Ex.wHashTableOffsetHigh << 32), FILE_BEGIN);
  24                 WriteFile(mpqOpenArc->hFile,mpqOpenArc->lpHashTable,sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize,&tsz,0);
  25                 DecryptData((LPBYTE)mpqOpenArc->lpHashTable,sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize,dwHashTableKey);
  26         }
  27
  28         return TRUE;
  29 }