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chat_demo.py
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chat_demo.py
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#!/usr/bin/env python
#------------------------------------------------------------------------------
# chat_demo.py
# Copyright 2009 Jim Storch
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain a
# copy of the License at http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#------------------------------------------------------------------------------
"""
Chat Room Demo for Miniboa.
"""
from miniboa import TelnetServer, AUTOSENSING
IDLE_TIMEOUT = 300
CLIENT_LIST = []
SERVER_RUN = True
def on_connect(client):
"""
Sample on_connect function.
Handles new connections.
"""
print("Connection from %s accepted." % client.addrport())
client.detect_term_caps()
broadcast('^R%s ^Yjoins the Server.\n^d' % client.addrport() )
CLIENT_LIST.append(client)
client.send_cc("^s^RWelcome to the ^YServer^R, %s.\n^dType 'help' for list of commands" % client.addrport() )
def on_disconnect(client):
"""
Sample on_disconnect function.
Handles lost connections.
"""
print("%s disconnected" % client.addrport())
CLIENT_LIST.remove(client)
broadcast('^R%s ^Yleaves the Server.\n^d' % client.addrport() )
def kick_idle():
"""
Looks for idle clients and disconnects them by setting active to False.
"""
## Who hasn't been typing?
for client in CLIENT_LIST:
if client.idle() > IDLE_TIMEOUT:
print('-- Kicking idle client from %s' % client.addrport())
broadcast("^YKicked ^R%s's ^Yass out for being idle too long!\n^d" % client.addrport())
client.active = False
def process_clients():
"""
Check each client, if client.cmd_ready == True then there is a line of
input available via client.get_command().
"""
for client in CLIENT_LIST:
if(client.client_state == AUTOSENSING):
client.check_auto_sense()
return
if client.active and client.cmd_ready:
## If the client sends input echo it to the chat room
chat(client)
def broadcast(msg):
"""
Send msg to every client.
"""
for client in CLIENT_LIST:
client.send_cc(msg)
def chat(client):
"""
Echo whatever client types to everyone.
"""
global SERVER_RUN
msg = client.get_command()
#print('^R%s says, ^B"%s"^d' % (client.addrport(), msg))
for guest in CLIENT_LIST:
if guest != client:
guest.send_cc('^R%s says,^Y %s\n^d' % (client.addrport(), msg))
else:
guest.send_cc('^RYou say,^Y %s\n^d' % msg)
cmd = msg.lower()
## bye = disconnect
if cmd == 'bye':
client.active = False
## shutdown == stop the server
elif cmd == 'shutdown':
SERVER_RUN = False
elif cmd == 'pmodeon':
eon(client)
elif cmd == 'pmodeoff':
eof(client)
elif cmd == 'stat':
dostat(client)
elif cmd == 'help':
dohelp(client)
def eon(client):
client.send_cc("^YEcho toggled: ^RON^Y.^d\n")
client.password_mode_on()
client.telnet_echo_password = True
def eof(client):
client.send_cc("^YEcho toggled: ^ROFF^Y.^d\n")
client.password_mode_off()
client.telnet_echo_password = False
def dostat(client):
client.send_cc("^G**************** ^YCurrent Telnet Stats ^G****************\n")
client.send_cc("^YBytes Sent:^R %i\n^d" % (client.bytes_sent))
client.send_cc("^YBytes Received:^R %i\n^d" % (client.bytes_received))
client.send_cc("^YTerminal Type:^R %s\n^d" % (client.terminal_type))
client.send_cc("^YTerminal Speed:^R %s\n^d" % (client.terminal_speed))
client.send_cc("^YWindow Size:^R %s x %s\n^d" % (client.columns, client.rows))
client.send_cc("\n^G**************** ^YTelnet Options ^G****************^d\n")
if len(client.telnet_opt_dict) < 1:
client.send_cc("^YNo Telnet Options Requested or Set^d\n")
for key in client.telnet_opt_dict:
client.send_cc("^YClient:^R %s ^YValue: ^R%s\n^d" % (client.telnet_opt_dict[key].option_text, client.telnet_opt_dict[key].remote_option))
client.send_cc("^YServer:^R %s ^YValue: ^R%s\n^d" % (client.telnet_opt_dict[key].option_text, client.telnet_opt_dict[key].local_option))
client.send_cc("\n^G****************************************************^d\n")
def dohelp(client):
client.send_cc("\n^G**************** ^YCommands ^G****************^d\n")
client.send_cc("^YCurrent available commands are:\n")
client.send_cc("^Rbye - Logs you out\n")
client.send_cc("shutdown - shuts down the server\n")
client.send_cc("stat - Show the status of your connection\n")
client.send_cc("pmodeon - turns password mode on (echo off)\n")
client.send_cc("pmodeoff - turns password mode off (echo on)\n")
client.send_cc("\n^G********************************************^d\n")
#------------------------------------------------------------------------------
# Main
#------------------------------------------------------------------------------
if __name__ == '__main__':
## Simple chat server to demonstrate connection handling via the
## async and telnet modules.
## Create a telnet server with a port, address,
## a function to call with new connections
## and one to call with lost connections.
telnet_server = TelnetServer(
port=7777,
address='',
on_connect=on_connect,
on_disconnect=on_disconnect,
timeout = .05
)
print(">> Listening for connections on port %d. CTRL-C to break."
% telnet_server.port)
## Server Loop
while SERVER_RUN:
telnet_server.poll() ## Send, Recv, and look for new connections
kick_idle() ## Check for idle clients
process_clients() ## Check for client input
print(">> Server shutdown.")