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Merge pull request #229 from matrix-org/auth
Issue macaroons as opaque auth tokens
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commit
f483340b3e
@ -32,9 +32,11 @@ class RegistrationConfig(Config):
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)
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self.registration_shared_secret = config.get("registration_shared_secret")
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self.macaroon_secret_key = config.get("macaroon_secret_key")
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def default_config(self, config_dir, server_name):
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registration_shared_secret = random_string_with_symbols(50)
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macaroon_secret_key = random_string_with_symbols(50)
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return """\
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## Registration ##
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@ -44,6 +46,8 @@ class RegistrationConfig(Config):
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# If set, allows registration by anyone who also has the shared
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# secret, even if registration is otherwise disabled.
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registration_shared_secret: "%(registration_shared_secret)s"
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macaroon_secret_key: "%(macaroon_secret_key)s"
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""" % locals()
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def add_arguments(self, parser):
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@ -25,9 +25,9 @@ import synapse.util.stringutils as stringutils
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from synapse.util.async import run_on_reactor
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from synapse.http.client import CaptchaServerHttpClient
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import base64
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import bcrypt
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import logging
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import pymacaroons
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import urllib
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logger = logging.getLogger(__name__)
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@ -274,11 +274,18 @@ class RegistrationHandler(BaseHandler):
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)
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def generate_token(self, user_id):
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# urlsafe variant uses _ and - so use . as the separator and replace
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# all =s with .s so http clients don't quote =s when it is used as
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# query params.
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return (base64.urlsafe_b64encode(user_id).replace('=', '.') + '.' +
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stringutils.random_string(18))
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macaroon = pymacaroons.Macaroon(
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location=self.hs.config.server_name,
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identifier="key",
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key=self.hs.config.macaroon_secret_key)
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macaroon.add_first_party_caveat("gen = 1")
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macaroon.add_first_party_caveat("user_id = %s" % (user_id,))
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macaroon.add_first_party_caveat("type = access")
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now = self.hs.get_clock().time_msec()
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expiry = now + (60 * 60 * 1000)
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macaroon.add_first_party_caveat("time < %d" % (expiry,))
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return macaroon.serialize()
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def _generate_user_id(self):
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return "-" + stringutils.random_string(18)
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@ -33,6 +33,7 @@ REQUIREMENTS = {
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"ujson": ["ujson"],
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"blist": ["blist"],
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"pysaml2": ["saml2"],
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"pymacaroons-pynacl": ["pymacaroons"],
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}
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CONDITIONAL_REQUIREMENTS = {
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"web_client": {
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70
tests/handlers/test_register.py
Normal file
70
tests/handlers/test_register.py
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@ -0,0 +1,70 @@
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# -*- coding: utf-8 -*-
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# Copyright 2015 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import pymacaroons
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from mock import Mock, NonCallableMock
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from synapse.handlers.register import RegistrationHandler
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from tests import unittest
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from tests.utils import setup_test_homeserver
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from twisted.internet import defer
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class RegisterHandlers(object):
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def __init__(self, hs):
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self.registration_handler = RegistrationHandler(hs)
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class RegisterTestCase(unittest.TestCase):
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@defer.inlineCallbacks
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def setUp(self):
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self.hs = yield setup_test_homeserver(handlers=None)
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self.hs.handlers = RegisterHandlers(self.hs)
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def test_token_is_a_macaroon(self):
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self.hs.config.macaroon_secret_key = "this key is a huge secret"
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token = self.hs.handlers.registration_handler.generate_token("some_user")
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# Check that we can parse the thing with pymacaroons
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macaroon = pymacaroons.Macaroon.deserialize(token)
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# The most basic of sanity checks
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if "some_user" not in macaroon.inspect():
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self.fail("some_user was not in %s" % macaroon.inspect())
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def test_macaroon_caveats(self):
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self.hs.config.macaroon_secret_key = "this key is a massive secret"
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self.hs.clock.now = 5000
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token = self.hs.handlers.registration_handler.generate_token("a_user")
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macaroon = pymacaroons.Macaroon.deserialize(token)
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def verify_gen(caveat):
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return caveat == "gen = 1"
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def verify_user(caveat):
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return caveat == "user_id = a_user"
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def verify_type(caveat):
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return caveat == "type = access"
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def verify_expiry(caveat):
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return caveat == "time < 8600000"
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v = pymacaroons.Verifier()
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v.satisfy_general(verify_gen)
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v.satisfy_general(verify_user)
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v.satisfy_general(verify_type)
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v.satisfy_general(verify_expiry)
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v.verify(macaroon, self.hs.config.macaroon_secret_key)
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@ -44,6 +44,8 @@ def setup_test_homeserver(name="test", datastore=None, config=None, **kargs):
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config.signing_key = [MockKey()]
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config.event_cache_size = 1
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config.disable_registration = False
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config.macaroon_secret_key = "not even a little secret"
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config.server_name = "server.under.test"
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if "clock" not in kargs:
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kargs["clock"] = MockClock()
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