from __future__ import print_function import errno import logging import os import random import socket import subprocess import sys import time LOG_TIMEOUT = 60.0 LOG_WAIT = 0.1 def fail(msg): logging.error('FAIL') sys.exit(msg) def try_connecting_to_socksport(): socks_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) e = socks_socket.connect_ex(('127.0.0.1', socks_port)) if e: tor_process.terminate() fail('Cannot connect to SOCKSPort: error ' + os.strerror(e)) socks_socket.close() def wait_for_log(s): cutoff = time.time() + LOG_TIMEOUT while time.time() < cutoff: l = tor_process.stdout.readline() l = l.decode('utf8') if s in l: logging.info('Tor logged: "{}"'.format(l.strip())) return logging.info('Tor logged: "{}", waiting for "{}"'.format(l.strip(), s)) # readline() returns a blank string when there is no output # avoid busy-waiting if len(s) == 0: time.sleep(LOG_WAIT) fail('Could not find "{}" in logs after {} seconds'.format(s, LOG_TIMEOUT)) def pick_random_port(): port = 0 random.seed() for i in range(8): port = random.randint(10000, 60000) s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) if s.connect_ex(('127.0.0.1', port)) == 0: s.close() else: break if port == 0: fail('Could not find a random free port between 10000 and 60000') return port logging.basicConfig(level=logging.DEBUG, format='%(asctime)s.%(msecs)03d %(message)s', datefmt='%Y-%m-%d %H:%M:%S') if sys.hexversion < 0x02070000: fail("ERROR: unsupported Python version (should be >= 2.7)") if sys.hexversion > 0x03000000 and sys.hexversion < 0x03010000: fail("ERROR: unsupported Python3 version (should be >= 3.1)") control_port = pick_random_port() socks_port = pick_random_port() assert control_port != 0 assert socks_port != 0 if len(sys.argv) < 3: fail('Usage: %s ' % sys.argv[0]) if not os.path.exists(sys.argv[1]): fail('ERROR: cannot find tor at %s' % sys.argv[1]) if not os.path.exists(sys.argv[2]): fail('ERROR: cannot find datadir at %s' % sys.argv[2]) tor_path = sys.argv[1] data_dir = sys.argv[2] tor_process = subprocess.Popen([tor_path, '-DataDirectory', data_dir, '-ControlPort', '127.0.0.1:{}'.format(control_port), '-SOCKSPort', '127.0.0.1:{}'.format(socks_port), '-Log', 'debug stdout', '-LogTimeGranularity', '1', '-FetchServerDescriptors', '0'], stdout=subprocess.PIPE, stderr=subprocess.PIPE) if tor_process == None: fail('ERROR: running tor failed') wait_for_log('Opened Control listener on') try_connecting_to_socksport() control_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) if control_socket.connect_ex(('127.0.0.1', control_port)): tor_process.terminate() fail('Cannot connect to ControlPort') control_socket.sendall('AUTHENTICATE \r\n'.encode('utf8')) control_socket.sendall('SETCONF SOCKSPort=0.0.0.0:{}\r\n'.format(socks_port).encode('utf8')) wait_for_log('Opened Socks listener') try_connecting_to_socksport() control_socket.sendall('SETCONF SOCKSPort=127.0.0.1:{}\r\n'.format(socks_port).encode('utf8')) wait_for_log('Opened Socks listener') try_connecting_to_socksport() control_socket.sendall('SIGNAL HALT\r\n'.encode('utf8')) wait_for_log('exiting cleanly') logging.info('OK') try: tor_process.terminate() except OSError as e: if e.errno == errno.ESRCH: # errno 3: No such process # assume tor has already exited due to SIGNAL HALT logging.warn("Tor has already exited") else: raise