Re: Jacek's status report - #2 of 16

[David Fifield <david () bamsoftware com>]

On Mon, Jun 17, 2013 at 11:32:54PM +0200, Jacek Wielemborek wrote:
> * Develop a working telnet negotiation demo. I believe it will be an
> interesting challenge for the current --lua-exec implementation and I
> can't wait to start writing the Websocket script!

There might be some confusion here, because Telnet negotiation is not
something that makes sense for --lua-exec. The -t option just causes
Ncat to do things to automatically ignore certain byte patterns that
Telnet servers emit.

Think of --lua-exec this way: You are stuck on Windows and you don't
even have a way to write shell scripts. But Ncat's built-in Lua
interpreter lets you still write interesting little --sh-exec
replacements.

--lua-exec should not require much implementation. Maybe 200 lines of
new code, not including configure and Makefile. I estimate it will take
only two weeks.

> * Add Windows code? Although I definitely don't feel too happy about
> it, I'm also convinced it's necessary to port the Lua functionality
> sooner or later. My first attempts at cross-compiling Ncat with MinGW
> failed, will probably need to work with Henri in order to figure out
> how to build Nsock this way. Hopefully Wine will be enough to test the
> builds.

This is the supported way:
http://nmap.org/book/inst-windows.html#inst-win-source
Hopefully there won't be too much work to be portable. liblua is already
nicely portable, and the hard parts of fork and exec replacements on
Windows have already been figured out.

David Fifield
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