Simple chat application using ONC RPC.
Practical Exercise 1 of Middleware
Master STI (http://gsyc.es/master)
URJC

Copyright (C) 2012 Maykel Moya <mmoya [at] mmoya.org>

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  MA 02110-1301, USA.

Description
===========
Trivial chat application using ONC RPC (http://j.mp/wa6gPT). Server
uses ~/.chatrpc/chatrpc.sqlite as persistent storage.

Only for demonstrative purposes, security and error management are
weak. Not intended for real usage.

Exercise guideline at http://j.mp/zi7Hf1 (open with a browser).

Building
========
$ sudo apt-get install libsqlite3-0 libsqlite3-dev
$ make

Launching server
================
$ ./chatrpcserver

Using client
============
Default <host> is localhost.
Default <user> is the current user.

Register and saves received passwd in ~/.chatrpc/client.passwd:
$ ./chatrpcclient [--host <host>] [--user <user>] --register

Send a message to user joe:
$ ./chatrpcclient [--host <host>] [--user <user>] --send joe "Test message"

Ask server for messages directed to a user (requires authentication):
$ ./chatrpcclient [--host <host>] [--user <user>] --receive

Request server to delete messages directed to a user (requires authentication):
$ ./chatprcclient [--host <host>] [--user <user>] --delete