RtlUTF8StringToUnicodeString

NTSTATUS __fastcall RtlUTF8StringToUnicodeString(INT16 *a1, UINT16 *a2, CHAR a3){
  UINT64 v6; 
  CHAR *v7; 
  NTSTATUS result; 
  UINT64 v9; 
  unsigned __int16 v10; 
  VOID *StringRoutine; 
  unsigned __int64 v12; 
  ULONG v13; 
  NTSTATUS v14; 
  UINT64 UTF8StringByteCount; 
  SIZE_T NumberOfBytes; 
  UINT64 UnicodeStringActualByteCount; 
  v6 = (unsigned int)*a2 + 1;
  LODWORD(NumberOfBytes) = 0;
  v7 = (CHAR *)*((_QWORD *)a2 + 1);
  LODWORD(UnicodeStringActualByteCount) = 0;
  result = CountUTF8ToUnicode(v7, v6, &NumberOfBytes);
  if( result >= 0 )
  {
    v9 = (unsigned int)NumberOfBytes;
    if( (unsigned int)NumberOfBytes > 0xFFFE )
      return -1073741584;
    v10 = NumberOfBytes - 2;
    *a1 = NumberOfBytes - 2;
    if( a3 )
    {
      a1[1] = v9;
      StringRoutine = ExpAllocateStringRoutine(v9);
      *((_QWORD *)a1 + 1) = StringRoutine;
      if( !StringRoutine )
        return -1073741801;
      v10 = *a1;
    }
    else
    {
      v12 = v10 + 2i64;
      if( v12 > (unsigned __int16)a1[1] || v12 < 2 )
        return -2147483643;
    }
    LODWORD(UTF8StringByteCount) = *a2;
    v14 = RtlUTF8ToUnicodeN(
            *((WCHAR **)a1 + 1),
            v10,
            &UnicodeStringActualByteCount,
            *((const CHAR **)a2 + 1),
            UTF8StringByteCount);
    if( v14 < 0 )
    {
      if( a3 )
      {
        ExFreePoolWithTag(*((PVOID *)a1 + 1), v13);
        *((_QWORD *)a1 + 1) = 0i64;
      }
    }
    else
    {
      v14 = 0;
      *(_WORD *)(*((_QWORD *)a1 + 1) + 2 * ((unsigned __int64)(unsigned int)UnicodeStringActualByteCount >> 1)) = 0;
    }
    return v14;
  }
  return result;
}

Referenced by: