# -*- coding: utf-8 -*- """Functions for starting the program""" import argparse import base64 import logging import multiprocessing import os import signal import socket from . import i2p, shared from .advertiser import Advertiser from .manager import Manager from .listener import Listener def handler(s, f): # pylint: disable=unused-argument """Signal handler""" logging.info('Gracefully shutting down MiNode') shared.shutting_down = True def parse_arguments(): # pylint: disable=too-many-branches,too-many-statements """Parsing arguments""" parser = argparse.ArgumentParser() parser.add_argument('-p', '--port', help='Port to listen on', type=int) parser.add_argument('--host', help='Listening host') parser.add_argument( '--debug', action='store_true', help='Enable debug logging') parser.add_argument('--data-dir', help='Path to data directory') parser.add_argument( '--no-incoming', action='store_true', help='Do not listen for incoming connections') parser.add_argument( '--no-outgoing', action='store_true', help='Do not send outgoing connections') parser.add_argument( '--no-ip', action='store_true', help='Do not use IP network') parser.add_argument( '--trusted-peer', help='Specify a trusted peer we should connect to') parser.add_argument( '--connection-limit', type=int, help='Maximum number of connections') parser.add_argument( '--i2p', action='store_true', help='Enable I2P support (uses SAMv3)') parser.add_argument( '--i2p-tunnel-length', type=int, help='Length of I2P tunnels') parser.add_argument( '--i2p-sam-host', help='Host of I2P SAMv3 bridge') parser.add_argument( '--i2p-sam-port', type=int, help='Port of I2P SAMv3 bridge') parser.add_argument( '--i2p-transient', action='store_true', help='Generate new I2P destination on start') args = parser.parse_args() if args.port: shared.listening_port = args.port if args.host: shared.listening_host = args.host if args.debug: shared.log_level = logging.DEBUG if args.data_dir: dir_path = args.data_dir if not dir_path.endswith('/'): dir_path += '/' shared.data_directory = dir_path if args.no_incoming: shared.listen_for_connections = False if args.no_outgoing: shared.send_outgoing_connections = False if args.no_ip: shared.ip_enabled = False if args.trusted_peer: if len(args.trusted_peer) > 50: # I2P shared.trusted_peer = (args.trusted_peer.encode(), 'i2p') else: colon_count = args.trusted_peer.count(':') if colon_count == 0: shared.trusted_peer = (args.trusted_peer, 8444) if colon_count == 1: addr = args.trusted_peer.split(':') shared.trusted_peer = (addr[0], int(addr[1])) if colon_count >= 2: # IPv6 <3 addr = args.trusted_peer.split(']:') addr[0] = addr[0][1:] shared.trusted_peer = (addr[0], int(addr[1])) if args.connection_limit: shared.connection_limit = args.connection_limit if args.i2p: shared.i2p_enabled = True if args.i2p_tunnel_length: shared.i2p_tunnel_length = args.i2p_tunnel_length if args.i2p_sam_host: shared.i2p_sam_host = args.i2p_sam_host if args.i2p_sam_port: shared.i2p_sam_port = args.i2p_sam_port if args.i2p_transient: shared.i2p_transient = True def bootstrap_from_dns(): """Addes addresses of bootstrap servers to known nodes""" try: for item in socket.getaddrinfo('bootstrap8080.bitmessage.org', 80): shared.unchecked_node_pool.add((item[4][0], 8080)) logging.debug( 'Adding %s to unchecked_node_pool' ' based on DNS bootstrap method', item[4][0]) for item in socket.getaddrinfo('bootstrap8444.bitmessage.org', 80): shared.unchecked_node_pool.add((item[4][0], 8444)) logging.debug( 'Adding %s to unchecked_node_pool' ' based on DNS bootstrap method', item[4][0]) except Exception: logging.info('Error during DNS bootstrap', exc_info=True) def start_ip_listener(): """Starts `.listener.Listener`""" listener_ipv4 = None listener_ipv6 = None if socket.has_ipv6: try: listener_ipv6 = Listener( shared.listening_host, shared.listening_port, family=socket.AF_INET6) listener_ipv6.start() except socket.gaierror as e: if e.errno == -9: logging.info('IPv6 is not supported.') except Exception: logging.info( 'Error while starting IPv6 listener on port %s', shared.listening_port, exc_info=True) try: listener_ipv4 = Listener(shared.listening_host, shared.listening_port) listener_ipv4.start() except OSError as e: if listener_ipv6: logging.info( 'Error while starting IPv4 listener on port %s.' ' However the IPv6 one seems to be working' ' and will probably accept IPv4 connections.', # 48 on macos shared.listening_port, exc_info=e.errno not in (48, 98)) else: logging.warning( 'Error while starting IPv4 listener on port %s.' 'You will not receive incoming connections.' ' Please check your port configuration', shared.listening_port, exc_info=True) def start_i2p_listener(): """Starts I2P threads""" # Grab I2P destinations from old object file for obj in shared.objects.values(): if obj.object_type == shared.i2p_dest_obj_type: shared.i2p_unchecked_node_pool.add(( base64.b64encode(obj.object_payload, altchars=b'-~'), 'i2p')) dest_priv = b'' if not shared.i2p_transient: try: with open( os.path.join(shared.data_directory, 'i2p_dest_priv.key'), 'br' ) as src: dest_priv = src.read() logging.debug('Loaded I2P destination private key.') except FileNotFoundError: pass except Exception: logging.info( 'Error while loading I2P destination private key.', exc_info=True) logging.info( 'Starting I2P Controller and creating tunnels. This may take a while.') i2p_controller = i2p.I2PController( shared, shared.i2p_sam_host, shared.i2p_sam_port, dest_priv) i2p_controller.start() shared.i2p_dest_pub = i2p_controller.dest_pub shared.i2p_session_nick = i2p_controller.nick logging.info('Local I2P destination: %s', shared.i2p_dest_pub.decode()) logging.info('I2P session nick: %s', shared.i2p_session_nick.decode()) logging.info('Starting I2P Listener') i2p_listener = i2p.I2PListener(shared, i2p_controller.nick) i2p_listener.start() if not shared.i2p_transient: try: with open( os.path.join(shared.data_directory, 'i2p_dest_priv.key'), 'bw' ) as src: src.write(i2p_controller.dest_priv) logging.debug('Saved I2P destination private key.') except Exception: logging.warning( 'Error while saving I2P destination private key.', exc_info=True) try: with open( os.path.join(shared.data_directory, 'i2p_dest.pub'), 'bw' ) as src: src.write(shared.i2p_dest_pub) logging.debug('Saved I2P destination public key.') except Exception: logging.warning( 'Error while saving I2P destination public key.', exc_info=True) def main(): """Script entry point""" try: multiprocessing.set_start_method('spawn') except RuntimeError: pass parse_arguments() logging.basicConfig( level=shared.log_level, format='[%(asctime)s] [%(levelname)s] %(message)s') logging.info('Starting MiNode') try: signal.signal(signal.SIGINT, handler) signal.signal(signal.SIGTERM, handler) except ValueError: logging.warning('Working outside of the main thread!') logging.info('Data directory: %s', shared.data_directory) if not os.path.exists(shared.data_directory): try: os.makedirs(shared.data_directory) except Exception: logging.warning( 'Error while creating data directory in: %s', shared.data_directory, exc_info=True) if shared.ip_enabled and not shared.trusted_peer: bootstrap_from_dns() if shared.i2p_enabled: # We are starting it before cleaning expired objects # so we can collect I2P destination objects start_i2p_listener() manager = Manager() manager.start() advertiser = Advertiser() advertiser.start() if shared.listen_for_connections: start_ip_listener() if __name__ == '__main__': main()