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https://github.com/PiMaker/Teletun.git
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feature: python3, secret chat
This commit is contained in:
Radomír Polách
parent
d4f8a9872c
commit
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1 changed files with 168 additions and 105 deletions
273
teletun.py
273
teletun.py
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@ -1,8 +1,10 @@
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#!/usr/bin/env python
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#!/usr/bin/env python3
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# (C) Stefan Reiter 2017
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# (C) Radomír Polách 2020
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from pytun import TunTapDevice
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from pytg import Telegram
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from pytg.sender import Sender
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from pytg.receiver import Receiver
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from pytg.utils import coroutine
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@ -13,129 +15,190 @@ import sys
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import psutil
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import os
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import signal
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# Connect to telegram
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print('Connecting to telegram...')
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receiver = Receiver(host="localhost", port=4458)
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sender = Sender(host="localhost", port=4458)
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# Retrieve contact list
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try:
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contacts = [c for c in sender.dialog_list()]
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for i, user in enumerate(contacts):
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print(unicode(i) + ': \t' + unicode(user['print_name']))
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except ConnectionError:
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print('Could not connect to telegram-cli. Start it by issuing "telegram-cli --json -P 4458" in a separate console.')
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sys.exit(1)
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# Ask user to choose contact
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i = int(input('Telegram online, please enter contact to connect to (by number): '))
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# Print username
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try:
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username = unicode(contacts[i]['print_name'])
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peer_id = contacts[i]['peer_id']
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print('Connecting to partner: ' + username)
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except IndexError:
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print('Please enter a number in the above range!')
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sys.exit(1)
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# Create TUN device for network capture and injections
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tun = TunTapDevice(name='teletun-device')
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print(tun.name + ' has been created, information follows:')
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# Set IP address based on --server flag
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if '--server' in sys.argv:
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tun.addr = '10.8.0.1'
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tun.dstaddr = '10.8.0.2'
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else:
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tun.addr = '10.8.0.2'
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tun.dstaddr = '10.8.0.1'
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tun.netmask = '255.255.255.0'
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tun.mtu = 1500
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print('Address: ' + tun.addr)
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print('Dest.-Address: ' + tun.dstaddr)
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print('Netmask: ' + tun.netmask)
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print('MTU: ' + str(tun.mtu))
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# Start TUN device
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tun.up()
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up = True
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import logging
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import argparse
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import time
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# Init stats
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sent = 0
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received = 0
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# Init status
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up = False
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# Tun
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tun = False
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encrypted = False
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# Arguments
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args = False
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def main():
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global sent, received, up, tun, encrypted, args;
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# Process arguments
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parser = argparse.ArgumentParser(description='Teletun - IP over Telegram')
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parser.add_argument('peer_id', help='peer id (list for contact list)')
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parser.add_argument('-r', '--server', help='server', action='store_true')
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parser.add_argument('-e', '--encrypted', help='secret chat', action='store_true')
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parser.add_argument('-p', '--src', help='peer address', default='10.8.0.2')
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parser.add_argument('-s', '--dst', help='server address', default='10.8.0.1')
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parser.add_argument('-m', '--mask', help='mask', default='255.255.255.0')
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parser.add_argument('-n', '--mtu', help='MTU', default=1500)
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parser.add_argument('-H', '--host', help='Telegram host address', default='localhost')
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parser.add_argument('-P', '--port', help='Telegram port', default=4458)
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parser.add_argument('-a', '--auto', help='autoconfig from server', action='store_true')
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args = parser.parse_args()
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peer_id = None
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# Connect to telegram
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print('Connecting to Telegram...', file=sys.stderr)
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receiver = Receiver(host=args.host, port=args.port)
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sender = Sender(host=args.host, port=args.port)
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# Retrieve contact list
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try:
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contacts = [c for c in sender.dialog_list()]
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for i, user in enumerate(contacts):
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if args.peer_id == 'list':
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print('{:16s} {}'.format(str(user['peer_id']), str(user['print_name'])))
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elif str(user['peer_id']) == args.peer_id:
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peer_id = args.peer_id
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username = str(user['print_name'])
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if args.peer_id == 'list':
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sys.exit(0)
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except ConnectionError:
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print('Could not connect to telegram-cli. Start it by issuing "telegram-cli --json -P 4458" in a separate console.', file=sys.stderr)
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sys.exit(1)
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if peer_id is None:
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print('Could not find peer_id in contact list.', file=sys.stderr)
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sys.exit(1)
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print('Connecting to partner: ' + username, file=sys.stderr)
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# Helper function that can be executed in a thread
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def main_loop_starter():
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receiver.start()
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# Start the receive loop
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receiver.message(main_loop())
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def main_loop_starter():
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receiver.start()
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# Start the receive loop
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receiver.message(main_loop())
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@coroutine
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def main_loop():
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global args, received, tun, encrypted;
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while up:
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# Receive message from telegram, this includes ALL messages
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msg = (yield)
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# Check if it is an actual "message" message and if the sender is our peer
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if (
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msg is not None and
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msg.event == str('message') and
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not msg.own and
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str(msg.sender.peer_id) == peer_id
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):
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print('Msg: ' + msg.text, file=sys.stderr)
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if msg.text[0] == '-' and msg.text[1] == '-':
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if args.server:
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if msg.text == '--encrypted':
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print('Requested encyption for: ' + username, file=sys.stderr)
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try:
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sender.create_secret_chat(username)
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except Exception:
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pass
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encrypted = True
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elif msg.text == '--server':
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command_line = '--src={} --dst={} --mask={} --mtu={:d}'.format(args.src, args.dst, args.mask, args.mtu)
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print('Requested encyption for: ' + command_line, file=sys.stderr)
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print('Sending configuration:' + command_line, file=sys.stderr)
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sender.msg(username, str(command_line))
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else:
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print('Receiving configuration:' + data, file=sys.stderr)
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args = parser.parse_args(sys.argv + data.split())
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tun.down()
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setup_tun()
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tun.up()
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else:
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# Decode data and write it to the tunnel
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data = base64.b64decode(msg.text)
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received += len(data)
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tun.write(data)
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#print('Packet written', file=sys.stderr)
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def setup_tun():
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if args.server:
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tun.addr = args.dst
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tun.dstaddr = args.src
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else:
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tun.addr = args.src + ' '
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tun.dstaddr = args.dst
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tun.netmask = args.mask
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tun.mtu = args.mtu
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print('\tSrc: ' + tun.addr, file=sys.stderr)
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print('\tDst: ' + tun.dstaddr, file=sys.stderr)
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print('\tMask: ' + tun.netmask, file=sys.stderr)
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print('\tMTU: ' + str(tun.mtu), file=sys.stderr)
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@coroutine
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def main_loop():
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global up
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global received
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while up:
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# Receive message from telegram, this includes ALL messages
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msg = (yield)
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# Check if it is an actual "message" message and if the sender is our peer
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if (
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msg is not None and
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msg['event'] == unicode('message') and
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not msg['own'] and
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msg['sender']['peer_id'] == peer_id
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):
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# Decode data and write it to the tunnel
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data = base64.b64decode(msg.text)
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received += len(data)
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tun.write(data)
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# Create TUN device for network capture and injections
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tun = TunTapDevice(name='teletun')
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print('Device ' + tun.name + ' has been created, information follows:', file=sys.stderr)
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print('TUN is up')
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if args.server or not args.auto:
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# Set IP address based on --server header
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setup_tun()
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# Start TUN device
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tun.up()
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up = True
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print('Device ' + tun.name + ' is up.', file=sys.stderr)
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if not args.server and args.encrypted:
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print('Requesting encyption for: ' + username, file=sys.stderr)
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sender.msg(username, '--encrypted')
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time.sleep(3)
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# Create the receive thread via our helper method
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thread = threading.Thread(target=main_loop_starter)
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thread = threading.Thread(target=main_loop_starter)
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# Start the thread for receiving
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print('Connecting to peer...')
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thread.start()
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print('Connected! Sending Invitation!')
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# Send the invitation message
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sender.msg(username, unicode('Hello, I would like to establish a Layer 3 Tunnel with you! -teletun'))
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while up:
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# Continually read from the tunnel and write data to telegram in base64
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# TODO: Telegram supports unicode, base64 can probably be replaced for something less overhead-inducing
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buf = tun.read(tun.mtu)
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data = base64.b64encode(buf)
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sent += len(data)
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sender.msg(username, unicode(data))
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print('Connecting...', file=sys.stderr)
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thread.start()
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if not args.server and args.auto:
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print('Waiting for configuration...', file=sys.stderr)
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command_line = '--server'
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sender.msg(username, str(command_line))
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while up:
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# Continually read from the tunnel and write data to telegram in base64
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# TODO: Telegram supports str, base64 can probably be replaced for something less overhead-inducing
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buf = tun.read(tun.mtu)
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data = base64.b64encode(buf)
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data = ''.join(map(chr, data))
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sent += len(data)
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if (not args.server and args.encrypted) or encrypted:
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sender.msg('!_' + username, data)
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elif not args.encrypted:
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sender.msg(username, data)
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# Cleanup and stop application
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up = False
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tun.down()
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receiver.stop()
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up = False
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tun.down()
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receiver.stop()
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print('Bytes sent via Telegram: ' + str(sent))
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print('Bytes received via Telegram: ' + str(received))
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print('~~ Bye bye! ~~')
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print('Bytes sent via Telegram: ' + str(sent), file=sys.stderr)
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print('Bytes received via Telegram: ' + str(received), file=sys.stderr)
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print('Done.', file=sys.stderr)
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# Literally Overkill
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current_process = psutil.Process()
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os.kill(current_process.pid, signal.SIGKILL)
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current_process = psutil.Process()
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os.kill(current_process.pid, signal.SIGKILL)
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if __name__== "__main__":
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# Run main
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main()
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