Mudauth
-------

Mudauth is the process by which the ftpd connects to a remote server in order
to find out about a certain users' file accesses. It is commonly used with
LPMud's. 
The CD.03.31 gamedriver supports a 'service port' which does the required
task.
MudOS users will have to listen on a port using lpc socket efuns (mudauth.c
is a rough example of how to do this although it wasn't written for MudOS)

The general format is very simple.
Once connected, the ftpd sends a string to the remote server and expects a
string in reply.

The string sent by the ftpd can be either:
	write <user> <directory>
or
	read <user> <directory>
(both of these can be prefixed with another string if MUD_AUTH_PREFIX is
 defined in security.h)

The remote server should then send back either
	READ access
or
	WRITE access
(depending on whether read or write was requested)
or
	ERROR No access


