LdrpGetAlternateResourceModuleHandleEx

NTSTATUS __stdcall LdrpGetAlternateResourceModuleHandleEx(
        PVOID Module,
        IMAGE_RESOURCE_DATA_ENTRY *ResourceDataEntry,
        UINT64 *AlternateSize,
        IMAGE_RESOURCE_DATA_ENTRY *a4,
        UINT64 AlternateSizea){
  int v8; 
  int i; 
  __int64 v10; 
  int j; 
  bool v12; 
  IMAGE_NT_HEADERS *v13; 
  unsigned __int16 Magic; 
  UINT64 pImageSize; 
  void *pAlternateModule[3]; 
  pAlternateModule[0] = 0i64;
  pImageSize = 0i64;
  LdrpInitMuiCrits((INT64)Module);
  KeWaitForSingleObject(&MuiMutex, Executive, 0, 0, 0i64);
  *(_QWORD *)&a4->OffsetToData = 0i64;
  v8 = AlternateResourceModuleCount;
  for( i = AlternateResourceModuleCount - 1; i >= 0; --i )
  {
    v10 = (__int64)i << 6;
    if( *(PVOID *)((char *)AlternateResourceModules + v10 + 8) == Module )
    {
      if( pAlternateModule[0] )
      {
        for( j = v8; ; --j )
        {
          v12 = j < 0;
          if( j < 0 )
            break;
          if( *((PVOID *)AlternateResourceModules + 8 * (__int64)j + 1) == Module
            && LdrpGetMappingFromCacheEntry(
                 (unsigned int)j,
                 (IMAGE_RESOURCE_DATA_ENTRY *)AlternateSize,
                 pAlternateModule,
                 &pImageSize) )
          {
            v8 = j;
            v12 = j < 0;
            break;
          }
        }
        if( v12 )
          v8 = AlternateResourceModuleCount;
        break;
      }
      pAlternateModule[0] = *(void **)((char *)AlternateResourceModules + v10 + 32);
      pImageSize = *(_QWORD *)((char *)AlternateResourceModules + v10 + 48);
      v8 = i;
    }
  }
  if( v8 == (_DWORD)AlternateResourceModuleCount )
  {
    pAlternateModule[0] = 0i64;
  }
  else
  {
    if( !pImageSize )
    {
      v13 = RtlImageNtHeader((PVOID)((unsigned __int64)pAlternateModule[0] & 0xFFFFFFFFFFFFFFFCui64));
      if( v13 )
      {
        Magic = v13->OptionalHeader.Magic;
        if( Magic == 267 || Magic == 523 )
          pImageSize = v13->OptionalHeader.SizeOfImage;
        else
          pImageSize = 0i64;
      }
    }
    *(_QWORD *)&a4->OffsetToData = pImageSize;
  }
  KeReleaseMutant(&MuiMutex, 1, 0, 0);
  return(NTSTATUS)pAlternateModule[0];
}

Referenced by: