Nmap Development mailing list archives

Re: [RFC][patch] Make timeout script-args consistent


From: David Fifield <david () bamsoftware com>
Date: Tue, 5 Mar 2013 10:40:48 -0800

On Tue, Mar 05, 2013 at 11:30:41AM -0600, Daniel Miller wrote:
I noticed that several timeout-related script-args were documented
as accepting a timespec as defined in the man page
(http://nmap.org/book/man-performance.html), but in reality only
accepted a plain number. Also, for some scripts this number was
seconds, and for others, milliseconds. The attached patch attempts
to standardize on the timespec method, as well as fix some
documentation issues (missing nsedoc, incorrect argument names,
etc.)

The major objection I'd expect here is for scripts that calculate
timeouts in seconds (os.time() - start < timeout) which may
misbehave if a timeout less than 1 second is specified (e.g.
--script-args myscript.timeout=100ms), but since the script did not
alter any defaults, this should not affect most users.

Are there any other objections to applying this patch? If there is
no response by Thursday morning, or if there is significant positive
response, I will commit it.

I'm on board with this patch. You need to do the parts that change
behavior (milliseconds to seconds, like in broadcast-ping) as a separate
commit. All the parse_timespec changes should be refactoring that
doesn't change behavior for people already calling the scripts with
integer arguments. Anything that changes behavior, please put in a
separate commit.

David Fifield
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