Re: LUA "Invalid Escape Sequence" error with NMAP 6.25

[Aaron Giuoco <afxdub () gmail com>]

Henri,

Thanks for taking a look.  I made the changes you suggested (require
"stdnse", declare 'ret', declare *action functions) and I still get the
same result.  I don't think the file is corrupted because it works with
6.01.  The error makes me think that I'm not properly escaping a character
somewhere.

I am running this on Win7 if that makes a difference.  I probably need to
try it in Linux to make sure I'm getting the same error and it's not some
weird OS specific problem.
AG

On Dec 15, 2012 10:55 AM, "Henri Doreau" <henri.doreau () gmail com> wrote:

> 2012/12/15 Aaron Giuoco <afxdub () gmail com>:
> > Hi everyone,
> >
> > I hope you can point me in the right direction.  I have a custom NSE
> script
> > that is throwing the error below in NMAP 6.25.  The script worked fine in
> > 6.01.  I'm sure that I just need to make some adjustments because of the
> > Lua upgrade, but I don't know what is wrong.  Script is attached.
> >
> >
> > Starting Nmap 6.25 ( http://nmap.org ) at 2012-12-15 08:40 Central
> Standard
> > Time
> >
> > NSE: failed to initialize the script engine:
> > nmap-6.25/nse_main.lua:659: Bad script rule:
> >         http-screenshot-html.nse ->  invalid escape sequence near '\U'
> > stack traceback:
> >         [C]: in function 'error'
> >         nmap-6.25/nse_main.lua:659: in function 'get_chosen_scripts'
> >         nmap-6.25/nse_main.lua:1239: in main chunk
> >         [C]: in ?
> >
> > QUITTING!
> Hello,
>
> I gave a quick try at your script against latest SVN version. I can't
> reproduce the bug you described but got two other ones.
>
> You first need to import stdnse (local stdnse = require "stdnse") and
> the 'ret' variable (in function portaction) should be declared as
> local. You might want (need?) to declare you *action functions as
> local too.
>
> I don't have wkhtmltoimage installed, so I can't test it furter but
> with the fixes above things seem to run smoothly. Is the file you sent
> exactly the one you're trying to run? Could it be that it's corrupted
> or something?
>
> Regards
>
> --
> Henri
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