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# -*- coding: utf-8 -*-
# Copyright 2018 New Vector
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from twisted.internet.defer import succeed
import synapse.rest.admin
from synapse.api.constants import LoginType
from synapse.handlers.ui_auth.checkers import UserInteractiveAuthChecker
from synapse.rest.client.v2_alpha import auth, register
from tests import unittest
class DummyRecaptchaChecker(UserInteractiveAuthChecker):
def __init__(self, hs):
super().__init__(hs)
self.recaptcha_attempts = []
def check_auth(self, authdict, clientip):
self.recaptcha_attempts.append((authdict, clientip))
return succeed(True)
class FallbackAuthTests(unittest.HomeserverTestCase):
servlets = [
auth.register_servlets,
synapse.rest.admin.register_servlets_for_client_rest_resource,
register.register_servlets,
]
hijack_auth = False
def make_homeserver(self, reactor, clock):
config = self.default_config()
config["enable_registration_captcha"] = True
config["recaptcha_public_key"] = "brokencake"
config["registrations_require_3pid"] = []
hs = self.setup_test_homeserver(config=config)
return hs
def prepare(self, reactor, clock, hs):
self.recaptcha_checker = DummyRecaptchaChecker(hs)
auth_handler = hs.get_auth_handler()
auth_handler.checkers[LoginType.RECAPTCHA] = self.recaptcha_checker
@unittest.INFO
def test_fallback_captcha(self):
request, channel = self.make_request(
"POST",
"register",
{"username": "user", "type": "m.login.password", "password": "bar"},
)
self.render(request)
# Returns a 401 as per the spec
self.assertEqual(request.code, 401)
# Grab the session
session = channel.json_body["session"]
# Assert our configured public key is being given
self.assertEqual(
channel.json_body["params"]["m.login.recaptcha"]["public_key"], "brokencake"
)
request, channel = self.make_request(
"GET", "auth/m.login.recaptcha/fallback/web?session=" + session
)
self.render(request)
self.assertEqual(request.code, 200)
request, channel = self.make_request(
"POST",
"auth/m.login.recaptcha/fallback/web?session="
+ session
+ "&g-recaptcha-response=a",
)
self.render(request)
self.assertEqual(request.code, 200)
# The recaptcha handler is called with the response given
attempts = self.recaptcha_checker.recaptcha_attempts
self.assertEqual(len(attempts), 1)
self.assertEqual(attempts[0][0]["response"], "a")
# also complete the dummy auth
request, channel = self.make_request(
"POST", "register", {"auth": {"session": session, "type": "m.login.dummy"}}
)
self.render(request)
# Now we should have fulfilled a complete auth flow, including
# the recaptcha fallback step, we can then send a
# request to the register API with the session in the authdict.
request, channel = self.make_request(
"POST", "register", {"auth": {"session": session}}
)
self.render(request)
self.assertEqual(channel.code, 200)
# We're given a registered user.
self.assertEqual(channel.json_body["user_id"], "@user:test")
def test_cannot_change_operation(self):
"""
The initial requested operation cannot be modified during the user interactive authentication session.
"""
# Make the initial request to register. (Later on a different password
# will be used.)
request, channel = self.make_request(
"POST",
"register",
{"username": "user", "type": "m.login.password", "password": "bar"},
)
self.render(request)
# Returns a 401 as per the spec
self.assertEqual(request.code, 401)
# Grab the session
session = channel.json_body["session"]
# Assert our configured public key is being given
self.assertEqual(
channel.json_body["params"]["m.login.recaptcha"]["public_key"], "brokencake"
)
request, channel = self.make_request(
"GET", "auth/m.login.recaptcha/fallback/web?session=" + session
)
self.render(request)
self.assertEqual(request.code, 200)
request, channel = self.make_request(
"POST",
"auth/m.login.recaptcha/fallback/web?session="
+ session
+ "&g-recaptcha-response=a",
)
self.render(request)
self.assertEqual(request.code, 200)
# The recaptcha handler is called with the response given
attempts = self.recaptcha_checker.recaptcha_attempts
self.assertEqual(len(attempts), 1)
self.assertEqual(attempts[0][0]["response"], "a")
# also complete the dummy auth
request, channel = self.make_request(
"POST", "register", {"auth": {"session": session, "type": "m.login.dummy"}}
)
self.render(request)
# Now we should have fulfilled a complete auth flow, including
# the recaptcha fallback step. Make the initial request again, but
# with a different password. This causes the request to fail since the
# operaiton was modified during the ui auth session.
request, channel = self.make_request(
"POST",
"register",
{
"username": "user",
"type": "m.login.password",
"password": "foo", # Note this doesn't match the original request.
"auth": {"session": session},
},
)
self.render(request)
self.assertEqual(channel.code, 403)
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