ObpLookupDirectoryEntryEx

VOID *__fastcall ObpLookupDirectoryEntryEx(
        CHAR *DmaAdapter,
        const UNICODE_STRING *a2,
        CHAR a3,
        CHAR a4,
        CHAR a5,
        INT64 a6){
  wchar_t *Buffer; 
  CHAR v7; 
  bool v9; 
  unsigned int v10; 
  unsigned __int64 v12; 
  unsigned int v13; 
  int v14; 
  unsigned int v15; 
  int v16; 
  INT64 v17; 
  VOID *v18; 
  __int64 v20; 
  __int64 v21; 
  __int128 v22; 
  _OBJECT_DIRECTORY *ShadowDirectory; 
  INT64 v24; 
  Buffer = a2->Buffer;
  v7 = a4;
  v9 = (a3 & 0x40) != 0;
  v10 = a2->Length >> 1;
  if( v10 < 4 )
  {
    v13 = 0;
  }
  else
  {
    v12 = 0i64;
    do
    {
      *(_QWORD *)&a4 = *(_QWORD *)Buffer;
      if( (*(_QWORD *)Buffer & 0xFF80FF80FF80FF80ui64) != 0 )
      {
        v20 = 4i64;
        do
        {
          v21 = (unsigned __int16)a4;
          if( (unsigned __int16)a4 >= 0x61u )
          {
            if( (unsigned __int16)a4 <= 0x7Au )
              v21 = (unsigned int)(unsigned __int16)a4 - 32;
            else
              v21 = NLS_UPCASE(a4);
          }
          *(_QWORD *)&v22 = a4;
          *((_QWORD *)&v22 + 1) = v21;
          *(_QWORD *)&a4 = v22 >> 16;
          --v20;
        }
        while( v20 );
      }
      else
      {
        *(_QWORD *)&a4 = a4 & 0xFFDFFFDFFFDFFFDFui64;
      }
      Buffer += 4;
      v10 -= 4;
      v12 = a4 + (v12 >> 1) + 3 * v12;
    }
    while( v10 >= 4 );
    v13 = v12 + HIDWORD(v12);
  }
  while( v10 )
  {
    v15 = *Buffer;
    v16 = (v13 >> 1) + 3 * v13;
    ++Buffer;
    --v10;
    if( v15 < 0x61 )
      goto LABEL_12;
    if( v15 > 0x7A )
    {
      *(_QWORD *)&a4 = NLS_UPCASE(v15);
      v13 = a4 + v14;
    }
    else
    {
      v16 -= 32;
LABEL_12:
      v13 = v15 + v16;
    }
  }
  LOBYTE(v17) = v9;
  *(_DWORD *)(a6 + 24) = v13;
  *(_WORD *)(a6 + 28) = v13 % 0x25;
  v18 = ObpLookupDirectoryUsingHash(
          (_OBJECT_DIRECTORY *)DmaAdapter,
          (_UNICODE_STRING *)a2,
          (_OBP_LOOKUP_CONTEXT *)a6,
          v17);
  if( !v18 && v7 )
  {
    do
    {
      ShadowDirectory = (_OBJECT_DIRECTORY *)ObpGetShadowDirectory((INT64)DmaAdapter, a5);
      if( ShadowDirectory )
      {
        if( *(_BYTE *)(a6 + 30) )
        {
          ObfReferenceObject(DmaAdapter);
          ObpUnlockDirectory((INT64)DmaAdapter, a6);
          ObpLockDirectoryShared((_OBP_LOOKUP_CONTEXT *)a6, ShadowDirectory);
          HalPutDmaAdapter((PADAPTER_OBJECT)DmaAdapter);
        }
        LOBYTE(v24) = v9;
        v18 = ObpLookupDirectoryUsingHash(ShadowDirectory, (_UNICODE_STRING *)a2, (_OBP_LOOKUP_CONTEXT *)a6, v24);
      }
      DmaAdapter = (CHAR *)ShadowDirectory;
    }
    while( !v18 && ShadowDirectory );
  }
  return v18;
}

Referenced by: