ExpressionConvertToString

NTSTATUS __stdcall ExpressionConvertToString(
        _DEVPROP_FILTER_EXPRESSION *Filter,
        UINT64 ExpressionStringSize,
        WCHAR *ExpressionString,
        UINT64 *RequiredSize){
  unsigned int v4; 
  UINT64 v7; 
  WCHAR *v8; 
  int v9; 
  int v10; 
  WCHAR *v11; 
  __int64 v12; 
  unsigned int v13; 
  unsigned int v14; 
  int v15; 
  unsigned int v16; 
  signed int v17; 
  int v18; 
  int v19; 
  int v20; 
  int v21; 
  WCHAR *v22; 
  int v23; 
  int v24; 
  int v25; 
  int v26; 
  __int64 v27; 
  unsigned int v28; 
  unsigned int v29; 
  unsigned __int64 v30; 
  UINT64 dwFlags; 
  size_t pcbRemaining[2]; 
  _NTSTRSAFE_PWSTR ppszDestEnd[2]; 
  UINT64 RequiredSizea; 
  UINT64 *v36; 

  v36 = RequiredSize;
  v4 = ExpressionStringSize;
  *(_QWORD *)pcbRemaining = 0i64;
  v7 = 0i64;
  *(_QWORD *)ppszDestEnd = 0i64;
  v8 = 0i64;
  LODWORD(RequiredSizea) = 0;
  if( !Filter )
    return -1073741811;
  if( (unsigned int)ExpressionStringSize >= 2 )
    *ExpressionString = 0;
  v10 = *Filter & 0xFF00000;
  if( v10 )
  {
    switch( v10 )
    {
      case 1048576:
        v11 = (WCHAR *)L"AND(";
        break;
      case 2097152:
        goto LABEL_12;
      case 3145728:
        v11 = L"OR(";
        break;
      case 4194304:
LABEL_12:
        v11 = (WCHAR *)L")";
        break;
      case 5242880:
        v11 = L"NOT(";
        break;
      case 6291456:
        goto LABEL_12;
      default:
        return -1073741811;
    }
    v12 = -1i64;
    do
      ++v12;
    while( v11[v12] );
    v13 = 2 * v12 + 2;
    if( RequiredSize )
      *(_DWORD *)RequiredSize = v13;
    if( v13 > (unsigned int)ExpressionStringSize )
      return -1073741789;
    else
      return RtlStringCbCopyW(ExpressionString, (unsigned int)ExpressionStringSize, v11);
  }
  v14 = 6;
  if( (unsigned int)ExpressionStringSize >= 6 )
  {
    LODWORD(dwFlags) = 1024;
    v9 = RtlStringCbCopyExW(
           ExpressionString,
           (unsigned int)ExpressionStringSize,
           (WCHAR *)L"[{",
           (WCHAR **)ppszDestEnd,
           (UINT64 *)pcbRemaining,
           dwFlags);
    if( v9 < 0 )
      return v9;
    v7 = *(_QWORD *)pcbRemaining;
    v8 = *(WCHAR **)ppszDestEnd;
  }
  v15 = *Filter & 0xF0000;
  if( (*Filter & 0x10000) != 0 )
  {
    v15 = *Filter & 0xE0000;
    v14 = 16;
    if( v4 >= 0x10 )
    {
      LODWORD(dwFlags) = 1024;
      v9 = RtlStringCbCopyExW(v8, v7, (WCHAR *)L"(NOT)", (WCHAR **)ppszDestEnd, (UINT64 *)pcbRemaining, dwFlags);
      if( v9 < 0 )
        return v9;
      v7 = *(_QWORD *)pcbRemaining;
      v8 = *(WCHAR **)ppszDestEnd;
    }
  }
  if( (v15 & 0x20000) != 0 )
  {
    v15 &= ~0x20000u;
    v14 += 26;
    if( v14 <= v4 )
    {
      LODWORD(dwFlags) = 1024;
      v9 = RtlStringCbCopyExW(v8, v7, (WCHAR *)L"(IGNORE_CASE)", (WCHAR **)ppszDestEnd, (UINT64 *)pcbRemaining, dwFlags);
      if( v9 < 0 )
        return v9;
      v7 = *(_QWORD *)pcbRemaining;
      v8 = *(WCHAR **)ppszDestEnd;
    }
  }
  if( v15 )
    return -1073741811;
  v16 = v14 + 2;
  if( v16 <= v4 )
  {
    LODWORD(dwFlags) = 1024;
    v9 = RtlStringCbCopyExW(v8, v7, (WCHAR *)L"}", (WCHAR **)ppszDestEnd, (UINT64 *)pcbRemaining, dwFlags);
    if( v9 < 0 )
      return v9;
    v7 = *(_QWORD *)pcbRemaining;
    v8 = *(WCHAR **)ppszDestEnd;
  }
  v17 = *Filter & 0xF000FFFF;
  if( v17 > 4096 )
  {
    if( v17 != 0x10000000 )
      return -1073741811;
    v22 = (WCHAR *)L"(array_contains)";
  }
  else if( v17 == 4096 )
  {
    v22 = L"(list_contains)";
  }
  else if( v17 > 6 )
  {
    v23 = v17 - 7;
    if( v23 )
    {
      v24 = v23 - 1;
      if( v24 )
      {
        v25 = v24 - 1;
        if( v25 )
        {
          v26 = v25 - 1;
          if( v26 )
          {
            if( v26 != 1 )
              return -1073741811;
            v22 = L"(contains)";
          }
          else
          {
            v22 = L"(ends_with)";
          }
        }
        else
        {
          v22 = L"(begins_with)";
        }
      }
      else
      {
        v22 = L"(|)";
      }
    }
    else
    {
      v22 = L"(&)";
    }
  }
  else if( v17 == 6 )
  {
    v22 = L"(<=)";
  }
  else
  {
    v18 = v17 - 1;
    if( v18 )
    {
      v19 = v18 - 1;
      if( v19 )
      {
        v20 = v19 - 1;
        if( v20 )
        {
          v21 = v20 - 1;
          if( v21 )
          {
            if( v21 != 1 )
              return -1073741811;
            v22 = L"(>=)";
          }
          else
          {
            v22 = L"(<)";
          }
        }
        else
        {
          v22 = L"(>)";
        }
      }
      else
      {
        v22 = L"(==)";
      }
    }
    else
    {
      v22 = L"(Exists)";
    }
  }
  v27 = -1i64;
  do
    ++v27;
  while( v22[v27] );
  v28 = v16 + 2 * v27;
  if( v28 <= v4 )
  {
    LODWORD(dwFlags) = 1024;
    v9 = RtlStringCbCopyExW(v8, v7, v22, (WCHAR **)ppszDestEnd, (UINT64 *)pcbRemaining, dwFlags);
    if( v9 < 0 )
      return v9;
    v7 = *(_QWORD *)pcbRemaining;
    v8 = *(WCHAR **)ppszDestEnd;
  }
  v9 = ConvertDevpropertyToString((const _DEVPROPERTY *)(Filter + 2), (unsigned int)v7, v8, &RequiredSizea);
  if( (int)(v9 + 0x80000000) < 0 || v9 == -1073741789 )
  {
    v9 = 0;
    v29 = RequiredSizea + v28;
    v30 = (unsigned int)RequiredSizea - 2i64;
    if( v7 >= v30 )
    {
      v7 += 2i64 - (unsigned int)RequiredSizea;
      v8 += v30 >> 1;
    }
    if( v29 > v4
      || (LODWORD(dwFlags) = 1024,
          v9 = RtlStringCbCopyExW(v8, v7, (WCHAR *)L"]", (WCHAR **)ppszDestEnd, (UINT64 *)pcbRemaining, dwFlags),
          v9 >= 0) )
    {
      if( v36 )
        *(_DWORD *)v36 = v29;
      if( v29 > v4 )
        return -1073741789;
    }
  }
  return v9;
}

Referenced by: