Re: [NSE] Multiple return values from action. Scripts without id.

["Patrick Donnelly" <batrick.donnelly () gmail com>]

On Sat, Aug 9, 2008 at 4:54 PM, jah <jah () zadkiel plus com> wrote:
> Hello nmappers,
>
>
> Attached is a small patch for showSMTPversion.nse which prevents its
> action() from returning two values:
>
> return string.gsub(result, "\n", "")
>
> Both a string and the number of replacements made are returned and this
> results in some weirdness which I've not been able to fix:
>
> Initiating SCRIPT ENGINE at 23:51
> SCRIPT ENGINE: The script has no 'id' entry, the 'filename' entry was
> changed to:
> nil
> SCRIPT ENGINE: Script scanning completed.
> SCRIPT ENGINE: Aborting script scan.
>
> The script has an id and there's nothing wrong with the filename
> (matches the entry in scripts.db).   It seems that when action() returns
> two results it somehow messes with the Lua stack (or something like
> that) and process_getScriptId() in nse_main.cc results in script abortion.
>
>
> Whilst fiddling, I found that (on windows at least) the script filepath
> (rather than just the filename) is output in the script results if the
> script does not have either an id or filename field.  I'm not sure if
> that is the intention - I thought I'd mention it anyway.

Thank you Jah for locating this. Currently there is a unofficial rule
that a script may only return one value. This will be changed when
time permits.

Thanks,

-- 
-Patrick Donnelly

"One of the lessons of history is that nothing is often a good thing
to do and always a clever thing to say."

-Will Durant

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