Re: [RFC][patch] XML structured script output (Nmap-script-XML as of 15 July)

[David Fifield <david () bamsoftware com>]

On Fri, Jul 20, 2012 at 10:54:32AM -0400, Patrick Donnelly wrote:
> On Thu, Jul 19, 2012 at 7:08 PM, David Fifield <david () bamsoftware com> wrote:
> > I can deal with the field names being lower-case and identifier-like;
> > maybe people will even prefer them that way. But the fact that "md5" and
> > "sha1" are not on adjacent lines is galling. Maybe a special kind of
> > table format that keeps order (i.e., an array of name-value pairs)? That
> > would seem to require a higher-level function with which to set output
> > values.
>
> You can get an ordered dictionary in Lua with some metamethod magic:

Right, thanks for that. I don't doubt that it can be done. I'm asking if
it's a reasonable model for setting script output.

I'm attaching a copy of ssl-cert.nse modified to return a structured
table. It's the same one used to create the most recent output example
on the wiki page. This, I think, is about as nice as setting structured
output is going to get, and it would be nice if this method could
provide nice ordered output.

-- Convert a cert (which is a kind of userdata object) into a normal Lua table.
local function to_table(cert)
    return {
        subject = cert.subject,
        issuer = cert.issuer,
        pubkey = cert.pubkey,
        validity = cert.validity,
        md5 = stdnse.tohex(cert:digest("md5")),
        sha1 = stdnse.tohex(cert:digest("sha1")),
        -- pem = cert.pem,
    }
end

David Fifield

Attachment: ssl-cert.nse
Description:

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