Copyright (c) 1980 The Regents of the University of California.
All rights reserved.
Redistribution and use in source and binary forms are permitted
provided that the above copyright notice and this paragraph are
duplicated in all such forms and that any documentation,
advertising materials, and other materials related to such
distribution and use acknowledge that the software was developed
by the University of California, Berkeley. The name of the
University may not be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
@(#)fingerd.8 6.2 (Berkeley) 09/19/88
All rights reserved.
Redistribution and use in source and binary forms are permitted
provided that the above copyright notice and this paragraph are
duplicated in all such forms and that any documentation,
advertising materials, and other materials related to such
distribution and use acknowledge that the software was developed
by the University of California, Berkeley. The name of the
University may not be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
@(#)fingerd.8 6.2 (Berkeley) 09/19/88
FINGERD 8 ""
C 6 NAME
fingerd - remote user information server
SYNOPSIS
/etc/fingerd DESCRIPTION
Fingerd is a simple protocol based on RFC742 that provides an interface to the
Name and Finger programs at several network sites.
The program is supposed to return a friendly,
human-oriented status report on either the system at the moment
or a particular person in depth.
There is no required format and the
protocol consists mostly of specifying a single ``command line''.
Fingerd listens for TCP requests at port 79. Once connected it reads a single command line terminated by a <CRLF> which is passed to finger (1). Fingerd closes its connections as soon as the output is finished.
If the line is null (i.e. just a <CRLF> is sent) then finger returns a ``default'' report that lists all people logged into the system at that moment.
If a user name is specified (e.g. eric<CRLF>) then the response lists more extended information for only that particular user, whether logged in or not. Allowable ``names'' in the command line include both ``login names'' and ``user names''. If a name is ambiguous, all possible derivations are returned.
SEE ALSO
finger(1)
BUGS
Connecting directly to the server from a TIP
or an equally narrow-minded TELNET-protocol user program can result
in meaningless attempts at option negotiation being sent to the
server, which will foul up the command line interpretation.
Fingerd should be taught to filter out IAC's and perhaps even respond
negatively (IAC WON'T) to all option commands received.