Reference client for Bitmessage: a P2P encrypted decentralised communication protocol:
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import shared
import socket
import defaultKnownNodes
import pickle
import time
from configparser import BMConfigParser
from debug import logger
import socks
import state
def knownNodes():
try:
# We shouldn't have to use the shared.knownNodesLock because this had
# better be the only thread accessing knownNodes right now.
pickleFile = open(state.appdata + 'knownnodes.dat', 'rb')
loadedKnownNodes = pickle.load(pickleFile)
pickleFile.close()
# The old format of storing knownNodes was as a 'host: (port, time)'
# mapping. The new format is as 'Peer: time' pairs. If we loaded
# data in the old format, transform it to the new style.
for stream, nodes in loadedKnownNodes.items():
shared.knownNodes[stream] = {}
for node_tuple in nodes.items():
try:
host, (port, lastseen) = node_tuple
peer = shared.Peer(host, port)
except:
peer, lastseen = node_tuple
shared.knownNodes[stream][peer] = lastseen
except:
shared.knownNodes = defaultKnownNodes.createDefaultKnownNodes(state.appdata)
# your own onion address, if setup
if BMConfigParser().has_option('bitmessagesettings', 'onionhostname') and ".onion" in BMConfigParser().get('bitmessagesettings', 'onionhostname'):
shared.knownNodes[1][shared.Peer(BMConfigParser().get('bitmessagesettings', 'onionhostname'), BMConfigParser().getint('bitmessagesettings', 'onionport'))] = int(time.time())
if BMConfigParser().getint('bitmessagesettings', 'settingsversion') > 10:
logger.error('Bitmessage cannot read future versions of the keys file (keys.dat). Run the newer version of Bitmessage.')
raise SystemExit
def dns():
# DNS bootstrap. This could be programmed to use the SOCKS proxy to do the
# DNS lookup some day but for now we will just rely on the entries in
# defaultKnownNodes.py. Hopefully either they are up to date or the user
# has run Bitmessage recently without SOCKS turned on and received good
# bootstrap nodes using that method.
if BMConfigParser().get('bitmessagesettings', 'socksproxytype') == 'none':
try:
for item in socket.getaddrinfo('bootstrap8080.bitmessage.org', 80):
logger.info('Adding ' + item[4][0] + ' to knownNodes based on DNS bootstrap method')
shared.knownNodes[1][shared.Peer(item[4][0], 8080)] = int(time.time())
except:
logger.error('bootstrap8080.bitmessage.org DNS bootstrapping failed.')
try:
for item in socket.getaddrinfo('bootstrap8444.bitmessage.org', 80):
logger.info ('Adding ' + item[4][0] + ' to knownNodes based on DNS bootstrap method')
shared.knownNodes[1][shared.Peer(item[4][0], 8444)] = int(time.time())
except:
logger.error('bootstrap8444.bitmessage.org DNS bootstrapping failed.')
elif BMConfigParser().get('bitmessagesettings', 'socksproxytype') == 'SOCKS5':
shared.knownNodes[1][shared.Peer('quzwelsuziwqgpt2.onion', 8444)] = int(time.time())
logger.debug("Adding quzwelsuziwqgpt2.onion:8444 to knownNodes.")
for port in [8080, 8444]:
logger.debug("Resolving %i through SOCKS...", port)
address_family = socket.AF_INET
sock = socks.socksocket(address_family, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.settimeout(20)
proxytype = socks.PROXY_TYPE_SOCKS5
sockshostname = BMConfigParser().get(
'bitmessagesettings', 'sockshostname')
socksport = BMConfigParser().getint(
'bitmessagesettings', 'socksport')
rdns = True # Do domain name lookups through the proxy; though this setting doesn't really matter since we won't be doing any domain name lookups anyway.
if BMConfigParser().getboolean('bitmessagesettings', 'socksauthentication'):
socksusername = BMConfigParser().get(
'bitmessagesettings', 'socksusername')
sockspassword = BMConfigParser().get(
'bitmessagesettings', 'sockspassword')
sock.setproxy(
proxytype, sockshostname, socksport, rdns, socksusername, sockspassword)
else:
sock.setproxy(
proxytype, sockshostname, socksport, rdns)
try:
ip = sock.resolve("bootstrap" + str(port) + ".bitmessage.org")
sock.shutdown(socket.SHUT_RDWR)
sock.close()
except:
logger.error("SOCKS DNS resolving failed", exc_info=True)
else:
if ip is not None:
logger.info ('Adding ' + ip + ' to knownNodes based on SOCKS DNS bootstrap method')
shared.knownNodes[1][shared.Peer(ip, port)] = time.time()
else:
logger.info('DNS bootstrap skipped because the proxy type does not support DNS resolution.')