/yakuza/ - site meta-discussion

#####################
# Dennis MUD        #
# telnet.py         #
# Copyright 2018    #
# Michael D. Reiley #
#####################

# **********
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
# **********

# Parts of codebase borrowed from https://github.com/TKeesh/WebSocketChat

import traceback

from twisted.internet import protocol
from twisted.protocols.basic import LineReceiver

# Read the motd file.
try:
    with open("motd.telnet.txt") as f:
        motd = f.read()
except:
    motd = None


class ServerProtocol(LineReceiver):
    def __init__(self, factory):
        self.factory = factory
        self.peer = None

    def connectionMade(self):
        p = self.transport.getPeer()
        self.peer = p.host + ':' + str(p.port)
        self.factory.register(self)
        print("Client connected: {0}".format(self.peer))
        if motd:
            self.factory.communicate(self.peer, motd.encode('utf-8'))

    def connectionLost(self, reason):
        self.factory.unregister(self)
        print("Client disconnected: {0}".format(self.peer))