openmedialibrary/oml/tor.py

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import os
import subprocess
from threading import Thread
import distutils
import stem
from stem.control import Controller
import settings
import state
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import logging
logger = logging.getLogger(__name__)
class TorDaemon(Thread):
def __init__(self):
self._status = []
Thread.__init__(self)
self.daemon = True
self.start()
def create_torrc(self):
defaults = os.path.join(settings.config_path, 'torrc-defaults')
torrc = os.path.join(settings.config_path, 'torrc')
if not os.path.exists(defaults):
with open(defaults, 'w') as fd:
fd.write('''
AvoidDiskWrites 1
# Where to send logging messages. Format is minSeverity[-maxSeverity]
# (stderr|stdout|syslog|file FILENAME).
Log notice stdout
SocksPort 9830
ControlPort 9831
CookieAuthentication 1
'''.strip())
if not os.path.exists(torrc):
with open(torrc, 'w') as fd:
fd.write('''
DataDirectory {base}/TorData
DirReqStatistics 0
'''.strip().format(base=settings.config_path))
return defaults, torrc
def get_tor(self):
def cmd_exists(cmd):
return subprocess.call("type " + cmd, shell=True,
stdout=subprocess.PIPE, stderr=subprocess.PIPE) == 0
for path in (
'/Applications/TorBrowser.app/TorBrowser/Tor/tor',
):
if os.path.isfile(path) and os.access(path, os.X_OK):
return path
start = os.path.expanduser('~/.local/share/applications/start-tor-browser.desktop')
if os.path.exists(start):
with open(start) as fd:
e = [line for line in fd.read().split('\n') if line.startswith('Exec')]
if e:
try:
base = os.path.dirname(e[0].split('"')[1])
path = os.path.join(base, 'TorBrowser', 'Tor', 'tor')
if os.path.isfile(path) and os.access(path, os.X_OK):
return path
except:
pass
return distutils.spawn.find_executable('tor')
def run(self):
defaults, torrc = self.create_torrc()
tor = self.get_tor()
if not tor:
self._status.append('No tor binary found. Please install TorBrowser or tor')
else:
cmd = [tor, '--defaults-torrc', defaults, '-f', torrc]
self.p = subprocess.Popen(cmd, stdout=subprocess.PIPE, bufsize=1, universal_newlines=True)
for line in self.p.stdout:
self._status.append(line)
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logger.debug(line)
self.p = None
def shutdown(self):
if self.p:
self.p.kill()
def status(self, max_lines=50):
return ''.join(self._status[-max_lines:])
class Tor(object):
_shutdown = False
connected = False
controller = None
daemon = None
socks_port = 9150
def __init__(self):
if not self.connect():
self.reconnect()
def connect(self):
self.connected = False
self.dir = os.path.join(settings.config_path, 'tor')
connected = False
for port in (9831, 9151):
try:
self.controller = Controller.from_port('127.0.0.1', port)
connected = True
break
except stem.SocketError:
pass
if not connected:
if not self.daemon:
logger.debug("start own tor process")
self.daemon = TorDaemon()
logger.debug("daemon %s", self.daemon)
return self.connect()
logger.debug("Failed to connect to system or own tor process.")
return False
try:
self.controller.authenticate()
except stem.connection.MissingPassword:
logger.debug("TOR requires a password")
return False
except stem.connection.PasswordAuthFailed:
logger.debug("invalid tor password")
return False
self.controller.add_event_listener(self.event_listener)
self.controller.add_status_listener(self.status_listener)
self.connected = True
self.socks_port = int(self.controller.get_conf('SocksPort').split(' ')[0])
self.publish()
state.online = True
return True
def reconnect(self):
if not self.connect():
if state.main:
state.main.call_later(1, self.reconnect)
def status_listener(self, controller, status, timestamp):
if status == 'Closed':
if not self._shutdown:
self.connected = False
state.online = False
self.reconnect()
else:
logger.debug('unknonw change %s', status)
def event_listener(self, event):
print('EVENT', event)
def shutdown(self):
self._shutdown = True
try:
self.unpublish()
if self.controller:
#self.controller.remove_event_listener(self.connection_change)
self.controller.close()
if self.daemon:
self.daemon.shutdown()
except:
logger.debug('shutdown exception', exc_info=1)
pass
self.connected = False
def publish(self):
logger.debug("publish tor node")
if not self.connected:
return False
controller = self.controller
logger.debug("FIXME: dont remove/add service if already defined")
controller.remove_hidden_service(self.dir)
result = controller.create_hidden_service(
self.dir,
settings.server_defaults['node_port'],
target_port=settings.server['node_port']
)
logger.debug('published node as https://%s:%s', result.hostname, settings.server_defaults['node_port'])
'''
with open(settings.ssl_key_path) as fd:
key_content = fd.read()
ports = {9851: settings.server['node_port']}
response = controller.create_ephemeral_hidden_service(ports,
key_type='RSA1024', key_content=key_content,
detached=True, await_publication = True)
logger.debug('published node as https://%s.onion:%s',
settings.USER_ID, settings.server_defaults['node_port'])
'''
def unpublish(self):
if not self.connected:
return False
if self.controller:
self.controller.remove_hidden_service(self.dir)
state.online = False
def is_online(self):
return self.connected and self.controller.is_alive()