Re: [NSE] rpc.lua Portmapper list cached in the NSE registry

[Djalal Harouni <tixxdz () gmail com>]

On 2010-04-30 12:13:03 +0200, Patrik Karlsson wrote:
> Hi Djalal,
>
> I tested the patch against a Linux server running NFS and it works great.
> My virtual OS X server behaves as badly as last time, so I don't think it makes a good reference.
> If someone else has the possibility to try this patch out against OS X please let us know.
>
> I'm uncertain about the memory implications of storing the rpcinfo table in the registry.
> I guess if you scan a Class B-network and identify 1000's of hosts running RPC it could become a problem.
> Cleaning up manually will probably be a problem as the script does not know if it is the last to use the cached data 
> or not.
> So, a weak keyed table, suggested by Patrick, is probably the best bet.
Hi Patrik,

Attached is a new patch to cache the RPC list in the NSE registry. I
have used weak tables with weak values, so when running rpcinfo and nfs-* scripts they will send only tree RPC DUMP 
CALLS packets instead of +40 packets. I assume that the cached data has been collected twice by the garbage collector.


-- 
tixxdz

Attachment: rpc.lua.diff
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