commit 859f9399455975a5d828427ede1d7e3662f1e591 Author: Isis Lovecruft isis@torproject.org Date: Thu Sep 13 12:41:39 2012 +0000

There's still a problem with Tor's DataDirectory not being found, but it only asks for the consensus once per list of bridges/relays, i.e. once for every time bridget is run. This is still not optimal and should be fixed.

The CustomCircuit class needs to be called as path=[] in reconf_controller(), but this should only be relevant when testing relays. --- ooni/plugins/bridget.py | 191 +++++++++++++++++++++++++---------------------- 1 files changed, 101 insertions(+), 90 deletions(-)

diff --git a/ooni/plugins/bridget.py b/ooni/plugins/bridget.py index 2a7d573..a53630c 100644 --- a/ooni/plugins/bridget.py +++ b/ooni/plugins/bridget.py @@ -16,9 +16,10 @@ from __future__ import with_statement from zope.interface import implements from twisted.python import usage from twisted.plugin import IPlugin -from twisted.internet import reactor, error +from twisted.internet import defer, error, reactor

import random +import sys

try: from ooni.lib.txtorcon import CircuitListenerMixin, IStreamAttacher @@ -61,9 +62,11 @@ class BridgetArgs(usage.Options): optFlags = [['random', 'x', 'Randomize control and socks ports']]

def postOptions(self): + ## We can't test pluggable transports without bridges if self['transport'] and not self['bridges']: e = "Pluggable transport requires the bridges option" raise usage.UsageError, e + ## We can't use random and static port simultaneously if self['socks'] and self['control']: if self['random']: e = "Unable to use random and specific ports simultaneously" @@ -199,43 +202,6 @@ class BridgetTest(OONITest): options = BridgetArgs blocking = False

- def load_assets(self): - """ - Load bridges and/or relays from files given in user options. Bridges - should be given in the form IP:ORport. We don't want to load these as - assets, because it's inefficient to start a Tor process for each one. - """ - assets = {} - self.bridge_list = [] - self.relay_list = [] - - ## XXX fix me - ## we should probably find a more memory nice way to load addresses, - ## in case the files are really large - if self.local_options: - if self.local_options['bridges']: - log.msg("Loading bridge information from %s ..." - % self.local_options['bridges']) - with open(self.local_options['bridges']) as bridge_file: - for line in bridge_file.readlines(): - if line.startswith('#'): - continue - else: - self.bridge_list.append(line.replace('\n','')) - assets.update({'bridges': self.bridge_list}) - - if self.local_options['relays']: - log.msg("Loading relay information from %s ..." - % self.local_options['relays']) - with open(options['relays']) as relay_file: - for line in relay_file.readlines(): - if line.startswith('#'): - continue - else: - self.relay_list.append(line.replace('\n','')) - assets.update({'relays': self.relay_list}) - return assets - def initialize(self): """ Extra initialization steps. We only want one child Tor process @@ -257,6 +223,10 @@ class BridgetTest(OONITest): options = self.local_options self.config = TorConfig()

+ ## Don't run the experiment if we don't have anything to test + if not options['bridges'] and not options['relays']: + self.suicide = True + if options['bridges']: self.config.UseBridges = 1

@@ -300,8 +270,42 @@ class BridgetTest(OONITest): self.config.ControlPort = self.control_port self.config.save()

- print self.config.create_torrc() - report = {'tor_config': self.config.config} + def load_assets(self): + """ + Load bridges and/or relays from files given in user options. Bridges + should be given in the form IP:ORport. We don't want to load these as + assets, because it's inefficient to start a Tor process for each one. + """ + assets = {} + self.bridge_list = [] + self.relay_list = [] + + ## XXX fix me + ## we should probably find a more memory nice way to load addresses, + ## in case the files are really large + if self.local_options: + if self.local_options['bridges']: + log.msg("Loading bridge information from %s ..." + % self.local_options['bridges']) + with open(self.local_options['bridges']) as bridge_file: + for line in bridge_file.readlines(): + if line.startswith('#'): + continue + else: + self.bridge_list.append(line.replace('\n','')) + assets.update({'bridges': self.bridge_list}) + + if self.local_options['relays']: + log.msg("Loading relay information from %s ..." + % self.local_options['relays']) + with open(options['relays']) as relay_file: + for line in relay_file.readlines(): + if line.startswith('#'): + continue + else: + self.relay_list.append(line.replace('\n','')) + assets.update({'relays': self.relay_list}) + return assets

def experiment(self, args): """ @@ -317,75 +321,83 @@ class BridgetTest(OONITest): this has a :class:`ooni.lib.txtorcon.torcontol.TorControlProtocol <TorControlProtocol>` instance as .protocol. """ - log.msg("Bridget: initiating test ... ") - from ooni.lib.txtorcon import TorProtocolFactory, TorConfig, TorState from ooni.lib.txtorcon import DEFAULT_VALUE, launch_tor

- log.msg("Starting Tor ...") - - def setup_failed(args): - log.msg("Setup Failed.") - report.update({'failed': args}) - reactor.stop() - - def setup_complete(proto): - log.msg("Setup Complete: %s" % proto) - state = TorState(proto.tor_protocol) - state.post_bootstrap.addCallback(state_complete).addErrback(setup_failed) - report.update({'success': args}) - def bootstrap(ctrl): """ Launch a Tor process with the TorConfig instance returned from initialize(). """ conf = TorConfig(ctrl) - conf.post_bootstrap.addCallback(setup_complete).addErrback(setup_failed) + conf.post_bootstrap.addCallback(setup_done).addErrback(setup_fail) log.msg("Tor process connected, bootstrapping ...")

- def updates(prog, tag, summary): - log.msg("%d%%: %s" % (prog, summary)) - - def reconfigure_controller(conf, bridge): + def reconf_controller(conf, bridge): ## if bridges and relays, use one bridge then build a circuit ## from three relays conf.Bridge = bridge ## XXX do we need a SIGHUP to restart?

- ## XXX see txtorcon.TorControlProtocol.add_event_listener we may not - ## need full CustomCircuit class - - ## if bridges only, try one bridge at a time, but don't build - ## circuits, just return + ## XXX see txtorcon.TorControlProtocol.add_event_listener we + ## may not need full CustomCircuit class

- ## if relays only, build circuits from relays + ## if bridges only, try one bridge at a time, but don't build + ## circuits, just return + ## if relays only, build circuits from relays

- def reconfigure_failed(args): + def reconf_fail(args): log.msg("Reconfiguring Tor config with args %s failed" % args) reactor.stop() - - if len(self.bridge_list) >= 1: - for bridge in self.bridge_list: - try: - print "BRIDGE IS %s" % bridge - reconfigure_controller(self.config, bridge) - except: - reconfigure_failed(bridge) - - ## :return: a Deferred which callbacks with a TorProcessProtocol - ## connected to the fully-bootstrapped Tor; this has a - ## txtorcon.TorControlProtocol instance as .protocol. - d = launch_tor(self.config, - reactor, - progress_updates=updates, - tor_binary=self.tor_binary) - d.addCallback(bootstrap, self.config) - d.addErrback(setup_failed) - ## 4 build circuits - - #print "Tor process ID: %s" % d.transport.pid - return d + + def setup_fail(args): + log.msg("Setup Failed.") + report.update({'failed': args}) + reactor.stop() + + def setup_done(proto): + log.msg("Setup Complete: %s" % proto) + state = TorState(proto.tor_protocol) + state.post_bootstrap.addCallback(state_complete).addErrback(setup_fail) + report.update({'success': args}) + + def updates(prog, tag, summary): + log.msg("%d%%: %s" % (prog, summary)) + + if len(args) == 0: + log.msg("Bridget needs lists of bridges and/or relays to test!") + log.msg("Exiting ...") + d = sys.exit() + return d + + else: + if len(self.bridge_list) >= 1: + for bridge in self.bridge_list: + try: + print "BRIDGE IS %s" % bridge + reconf_controller(self.config, bridge) + except: + reconf_fail(bridge) + + log.msg("Bridget: initiating test ... ") + log.msg("Using the following as our torrc:\n%s" + % self.config.create_torrc()) + report = {'tor_config': self.config.config} + log.msg("Starting Tor ...") + + ## :return: a Deferred which callbacks with a TorProcessProtocol + ## connected to the fully-bootstrapped Tor; this has a + ## txtorcon.TorControlProtocol instance as .protocol. + d = launch_tor(self.config, + reactor, + progress_updates=updates, + tor_binary=self.tor_binary) + d.addCallback(bootstrap, self.config) + d.addErrback(setup_fail) + ## now build circuits + + #print "Tor process ID: %s" % d.transport.pid + return d

## So that getPlugins() can register the Test: bridget = BridgetTest(None, None, None) @@ -399,7 +411,6 @@ bridget = BridgetTest(None, None, None) ## ## TODO: ## o add option for any kwarg=arg self.config setting -## o add DataDirectory option? ## o cleanup documentation ## o check if bridges are public relays ## o take bridge_desc file as input, also be able to give same