Building a string with var = var .. "something" has miserable time
complexities. This commit cleans up a lot of that in scripts, focusing
on packing of data with bin.pack and concatenations within loops.
Additionally, a few instances were replaced with string.rep
http://seclists.org/nmap-dev/2012/q2/54
This patch is from Daniel Miller. He writes:
I've just finished enhancing the nfs-ls, nfs-statfs, and nfs-showmount
scripts so that they can run based on version detection information,
for cases where the portmapper is firewalled. For nfs-ls and
nfs-statfs, this required making a hostrule to check that both a
mountd service and a nfs service were detected. In the process, I
ended up adding the AUTH_UNIX flavor to rpc.lua, since the RFC states
that AUTH_NULL can only be used for the NULL procedure (and my Linux
nfs-kernel-server was enforcing that).
Other minor changes:
* If running privileged, attempt to bind to a reserved port. Many NFS
servers refuse to talk to source ports >1024, as a "security measure"
* handle an odd case in nfs-ls where READDIRPLUS does not return file
attributes. Chose to use all ?'s, but in the future maybe a direct
GETATTR call?
* remove reference to nfs.dirlist argument from nfs-ls doc, since it is unused
nfs-showmount scripts to use the new library. The new scripts are:
- nfs-acls shows the owner and directory mode of NFS exports
- nfs-dirlist lists the contents of NFS exports
- nfs-statfs shows file system statistics for NFS exports
[Patrik]
