310 lines
11 KiB
Python
310 lines
11 KiB
Python
import os
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import re
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import sys
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import subprocess
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import time
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from threading import Thread
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import distutils
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import ox
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import stem
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from stem.control import Controller
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from Crypto.PublicKey import RSA
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import settings
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import state
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import utils
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import logging
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logging.getLogger('stem').setLevel(logging.ERROR)
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logger = logging.getLogger(__name__)
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class TorDaemon(Thread):
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installing = False
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running = True
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def __init__(self):
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self._status = []
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Thread.__init__(self)
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self.daemon = True
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self.start()
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def create_torrc(self):
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defaults = os.path.join(settings.data_path, 'torrc-defaults')
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torrc = os.path.join(settings.data_path, 'torrc')
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if not os.path.exists(defaults):
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with open(defaults, 'w') as fd:
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fd.write('''
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AvoidDiskWrites 1
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# Where to send logging messages. Format is minSeverity[-maxSeverity]
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# (stderr|stdout|syslog|file FILENAME).
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Log notice stdout
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SocksPort 9830
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ControlPort 9831
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CookieAuthentication 1
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'''.strip())
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if not os.path.exists(torrc):
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with open(torrc, 'w') as fd:
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fd.write('''
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DataDirectory {base}/TorData
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DirReqStatistics 0
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'''.strip().format(base=settings.data_path))
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else:
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with open(torrc, 'r') as fd:
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data = fd.read()
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modified_data = re.sub('DataDirectory.*?/TorData',
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'DataDirectory {base}/TorData'.format(base=settings.data_path), data)
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if data != modified_data:
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with open(torrc, 'w') as fd:
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fd.write(modified_data)
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return defaults, torrc
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def run(self):
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defaults, torrc = self.create_torrc()
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tor = get_tor()
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if not tor:
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self._status.append('No tor binary found. Please install TorBrowser or tor')
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self.installing = True
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install_tor()
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self.installing = False
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tor = get_tor()
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if tor:
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cmd = [tor, '--defaults-torrc', defaults, '-f', torrc]
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while self.running:
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self.p = subprocess.Popen(cmd, stdout=subprocess.PIPE, bufsize=1,
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universal_newlines=True, close_fds=True, start_new_session=True)
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for line in self.p.stdout:
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self._status.append(line)
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logger.debug(line)
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time.sleep(0.5)
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self.p = None
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def kill(self):
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self.running = False
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if self.p:
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self.p.kill()
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def status(self, max_lines=50):
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return ''.join(self._status[-max_lines:])
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class Tor(object):
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_shutdown = False
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connected = False
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controller = None
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daemon = None
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socks_port = 9150
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def __init__(self):
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if not self.connect():
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self.reconnect()
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def connect(self):
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self.connected = False
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self.dir = os.path.join(settings.data_path, 'tor')
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connected = False
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for port in (9831, 9151):
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try:
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self.controller = Controller.from_port('127.0.0.1', port)
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connected = True
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break
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except stem.SocketError:
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pass
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if not connected:
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if not self.daemon:
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logger.debug("Start tor")
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self.daemon = TorDaemon()
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return self.connect()
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if not self.daemon.installing:
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logger.debug("Failed to connect to tor")
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return False
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try:
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self.controller.authenticate()
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except stem.connection.MissingPassword:
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logger.debug("TOR requires a password")
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return False
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except stem.connection.PasswordAuthFailed:
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logger.debug("invalid tor password")
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return False
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self.controller.add_event_listener(self.event_listener)
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self.controller.add_status_listener(self.status_listener)
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self.connected = True
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self.socks_port = int(self.controller.get_conf('SocksPort').split(' ')[0])
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self.publish()
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state.online = self.is_online()
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return True
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def reconnect(self):
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if not self.connect():
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if state.main:
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state.main.call_later(1, self.reconnect)
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def status_listener(self, controller, status, timestamp):
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if status == 'Closed':
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if not self._shutdown:
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self.connected = False
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state.online = False
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self.reconnect()
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else:
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logger.debug('unknonw change %s', status)
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def event_listener(self, event):
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print('EVENT', event)
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def shutdown(self):
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self._shutdown = True
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try:
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self.depublish()
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if self.controller:
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#self.controller.remove_event_listener(self.connection_change)
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self.controller.close()
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if self.daemon:
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self.daemon.kill()
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except:
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logger.debug('shutdown exception', exc_info=True)
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pass
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self.connected = False
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def publish(self):
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logger.debug("publish tor node")
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if not self.connected:
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return False
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controller = self.controller
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if controller.get_version() >= stem.version.Requirement.ADD_ONION:
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with open(settings.ssl_key_path, 'rb') as fd:
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private_key = fd.read()
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key_content = RSA.importKey(private_key).exportKey().decode()
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key_content = ''.join(key_content.strip().split('\n')[1:-1])
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ports = {9851: settings.server['node_port']}
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controller.remove_ephemeral_hidden_service(settings.USER_ID)
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response = controller.create_ephemeral_hidden_service(ports,
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key_type='RSA1024', key_content=key_content,
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detached=True)
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if response.is_ok():
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logger.debug('published node as https://%s.onion:%s',
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settings.USER_ID, settings.server_defaults['node_port'])
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else:
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logger.debug('failed to publish node to tor')
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else:
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controller.remove_hidden_service(self.dir)
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result = controller.create_hidden_service(
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self.dir,
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settings.server_defaults['node_port'],
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target_port=settings.server['node_port']
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)
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logger.debug('published node as https://%s:%s', result.hostname, settings.server_defaults['node_port'])
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def depublish(self):
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if not self.connected:
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return False
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if self.controller:
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try:
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self.controller.remove_hidden_service(self.dir)
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except:
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logger.debug('self.controller.remove_hidden_service fail', exc_info=True)
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state.online = False
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def is_online(self):
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return self.connected and self.controller.is_alive() and utils.can_connect_dns()
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def torbrowser_url():
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import re
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from ox.cache import read_url
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base_url = 'https://dist.torproject.org/torbrowser/'
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r = re.compile('href="(\d\.\d\.\d/)"')
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current = sorted(r.findall(read_url(base_url, timeout=3*24*60*60).decode()))[-1]
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url = base_url + current
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if sys.platform.startswith('linux'):
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import platform
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if platform.architecture()[0] == '64bit':
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osname = 'linux64'
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else:
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osname = 'linux32'
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ext = 'xz'
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elif sys.platform == 'darwin':
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osname = 'osx64'
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ext = 'dmg'
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elif sys.platform == 'win32':
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osname = 'install'
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ext = 'exe'
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else:
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logger.debug('no way to get torbrowser url for %s', sys.platform)
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return None
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r = re.compile('href="(.*?{osname}.*?en.*?{ext})"'.format(osname=osname,ext=ext))
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torbrowser = sorted(r.findall(read_url(url).decode()))[-1]
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url += torbrowser
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return url
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def get_tor():
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if sys.platform == 'darwin':
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for path in (
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'/Applications/TorBrowser.app/TorBrowser/Tor/tor',
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os.path.join(settings.base_dir, 'tor', 'TorBrowser.app', 'TorBrowser', 'Tor', 'tor')
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):
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if os.path.isfile(path) and os.access(path, os.X_OK):
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return path
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start = os.path.expanduser('~/.local/share/applications/start-tor-browser.desktop')
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if os.path.exists(start):
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with open(start) as fd:
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e = [line for line in fd.read().split('\n') if line.startswith('Exec')]
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if e:
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try:
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base = os.path.dirname(e[0].split('"')[1])
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path = os.path.join(base, 'TorBrowser', 'Tor', 'tor')
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if os.path.isfile(path) and os.access(path, os.X_OK):
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return path
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except:
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pass
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local_tor = os.path.normpath(os.path.join(settings.base_dir, '..',
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'tor', 'tor-browser_en-US', 'Browser', 'TorBrowser', 'Tor', 'tor'))
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if os.path.exists(local_tor):
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return local_tor
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return distutils.spawn.find_executable('tor')
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def install_tor():
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import tarfile
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import update
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import shutil
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# only install if tor can not be found
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if get_tor():
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logger.debug('found existing tor installation')
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return
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url = torbrowser_url()
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target = os.path.normpath(os.path.join(settings.base_dir, '..', 'tor'))
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if url:
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logger.debug('downloading and installing tor')
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if sys.platform.startswith('linux'):
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ox.makedirs(target)
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try:
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tar_file = os.path.join(target, os.path.basename(url))
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update.get(url, tar_file)
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tar = tarfile.open(tar_file)
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tar.extractall(target)
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desktop = os.path.join(target, tar.members[0].path, 'start-tor-browser.desktop')
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tar.close()
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subprocess.call([desktop, '--register-app'], cwd=os.path.dirname(desktop))
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os.unlink(tar_file)
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except:
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logger.debug('tor installation failed', exc_info=True)
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elif sys.platform == 'darwin':
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ox.makedirs(target)
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dmg = os.path.join(target, os.path.basename(url))
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name = 'TorBrowser.app'
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if os.access('/Applications', os.W_OK):
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target = os.path.join('/Applications', name)
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else:
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target = os.path.join(target, name)
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if not os.path.exists(target):
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try:
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update.get(url, dmg)
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r = subprocess.check_output(['hdiutil', 'mount', dmg])
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volume = r.decode().strip().split('\t')[-1]
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app = os.path.join(volume, name)
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shutil.copytree(app, target)
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subprocess.call(['hdiutil', 'unmount', volume])
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os.unlink(dmg)
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except:
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logger.debug('tor installation failed', exc_info=True)
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else:
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logger.debug('no way to install TorBrowser on %s so far', sys.platform)
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