import StringIO import time import pycurl import stem.control # https://metrics.torproject.org/rs.html#details/379FB450010D17078B3766C2273303C358C3A442 EXIT_FINGERPRINT = '379FB450010D17078B3766C2273303C358C3A442' SOCKS_PORT = 9050 CONNECTION_TIMEOUT = 30 # timeout before we give up on a circuit def query(url): """ Uses pycurl to fetch a site using the proxy on the SOCKS_PORT. """ output = StringIO.StringIO() query = pycurl.Curl() query.setopt(pycurl.URL, url) query.setopt(pycurl.PROXY, 'localhost') query.setopt(pycurl.PROXYPORT, SOCKS_PORT) query.setopt(pycurl.PROXYTYPE, pycurl.PROXYTYPE_SOCKS5_HOSTNAME) query.setopt(pycurl.CONNECTTIMEOUT, CONNECTION_TIMEOUT) query.setopt(pycurl.WRITEFUNCTION, output.write) try: query.perform() return output.getvalue() except pycurl.error as exc: raise ValueError("Unable to reach %s (%s)" % (url, exc)) def scan(controller, path): """ Fetch check.torproject.org through the given path of relays, providing back the time it took. """ circuit_id = controller.new_circuit(path, await_build = True) def attach_stream(stream): if stream.status == 'NEW': controller.attach_stream(stream.id, circuit_id) controller.add_event_listener(attach_stream, stem.control.EventType.STREAM) try: controller.set_conf('__LeaveStreamsUnattached', '1') # leave stream management to us start_time = time.time() check_page = query('https://check.torproject.org/') if 'Congratulations. This browser is configured to use Tor.' not in check_page: raise ValueError("Request didn't have the right content") return time.time() - start_time finally: controller.remove_event_listener(attach_stream) controller.reset_conf('__LeaveStreamsUnattached') with stem.control.Controller.from_port() as controller: controller.authenticate() relay_fingerprints = [desc.fingerprint for desc in controller.get_network_statuses()] for fingerprint in relay_fingerprints: try: time_taken = scan(controller, [fingerprint, EXIT_FINGERPRINT]) print('%s => %0.2f seconds' % (fingerprint, time_taken)) except Exception as exc: print('%s => %s' % (fingerprint, exc))