diff options
| -rw-r--r-- | changelog.d/3630.feature | 1 | ||||
| -rw-r--r-- | synapse/api/errors.py | 1 | ||||
| -rwxr-xr-x | synapse/app/homeserver.py | 19 | ||||
| -rw-r--r-- | synapse/config/server.py | 8 | ||||
| -rw-r--r-- | synapse/handlers/auth.py | 19 | ||||
| -rw-r--r-- | synapse/handlers/register.py | 19 | ||||
| -rw-r--r-- | synapse/storage/__init__.py | 26 | ||||
| -rw-r--r-- | synapse/storage/schema/delta/50/make_event_content_nullable.py | 2 | ||||
| -rw-r--r-- | tests/handlers/test_auth.py | 80 | ||||
| -rw-r--r-- | tests/handlers/test_register.py | 51 | ||||
| -rw-r--r-- | tests/storage/test__init__.py | 65 |
11 files changed, 275 insertions, 16 deletions
diff --git a/changelog.d/3630.feature b/changelog.d/3630.feature new file mode 100644 index 0000000000..8007a04840 --- /dev/null +++ b/changelog.d/3630.feature @@ -0,0 +1 @@ +Add ability to limit number of monthly active users on the server diff --git a/synapse/api/errors.py b/synapse/api/errors.py index 6074df292f..14f5540280 100644 --- a/synapse/api/errors.py +++ b/synapse/api/errors.py @@ -55,6 +55,7 @@ class Codes(object): SERVER_NOT_TRUSTED = "M_SERVER_NOT_TRUSTED" CONSENT_NOT_GIVEN = "M_CONSENT_NOT_GIVEN" CANNOT_LEAVE_SERVER_NOTICE_ROOM = "M_CANNOT_LEAVE_SERVER_NOTICE_ROOM" + MAU_LIMIT_EXCEEDED = "M_MAU_LIMIT_EXCEEDED" class CodeMessageException(RuntimeError): diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py index 57b815d777..fba51c26e8 100755 --- a/synapse/app/homeserver.py +++ b/synapse/app/homeserver.py @@ -20,6 +20,8 @@ import sys from six import iteritems +from prometheus_client import Gauge + from twisted.application import service from twisted.internet import defer, reactor from twisted.web.resource import EncodingResourceWrapper, NoResource @@ -300,6 +302,11 @@ class SynapseHomeServer(HomeServer): quit_with_error(e.message) +# Gauges to expose monthly active user control metrics +current_mau_gauge = Gauge("synapse_admin_current_mau", "Current MAU") +max_mau_value_gauge = Gauge("synapse_admin_max_mau_value", "MAU Limit") + + def setup(config_options): """ Args: @@ -512,6 +519,18 @@ def run(hs): # table will decrease clock.looping_call(generate_user_daily_visit_stats, 5 * 60 * 1000) + @defer.inlineCallbacks + def generate_monthly_active_users(): + count = 0 + if hs.config.limit_usage_by_mau: + count = yield hs.get_datastore().count_monthly_users() + current_mau_gauge.set(float(count)) + max_mau_value_gauge.set(float(hs.config.max_mau_value)) + + generate_monthly_active_users() + if hs.config.limit_usage_by_mau: + clock.looping_call(generate_monthly_active_users, 5 * 60 * 1000) + if hs.config.report_stats: logger.info("Scheduling stats reporting for 3 hour intervals") clock.looping_call(start_phone_stats_home, 3 * 60 * 60 * 1000) diff --git a/synapse/config/server.py b/synapse/config/server.py index 18102656b0..a8014e9c50 100644 --- a/synapse/config/server.py +++ b/synapse/config/server.py @@ -67,6 +67,14 @@ class ServerConfig(Config): "block_non_admin_invites", False, ) + # Options to control access by tracking MAU + self.limit_usage_by_mau = config.get("limit_usage_by_mau", False) + if self.limit_usage_by_mau: + self.max_mau_value = config.get( + "max_mau_value", 0, + ) + else: + self.max_mau_value = 0 # FIXME: federation_domain_whitelist needs sytests self.federation_domain_whitelist = None federation_domain_whitelist = config.get( diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py index 5d03bfa5f7..184eef09d0 100644 --- a/synapse/handlers/auth.py +++ b/synapse/handlers/auth.py @@ -520,6 +520,7 @@ class AuthHandler(BaseHandler): """ logger.info("Logging in user %s on device %s", user_id, device_id) access_token = yield self.issue_access_token(user_id, device_id) + yield self._check_mau_limits() # the device *should* have been registered before we got here; however, # it's possible we raced against a DELETE operation. The thing we @@ -731,15 +732,18 @@ class AuthHandler(BaseHandler): device_id) defer.returnValue(access_token) + @defer.inlineCallbacks def validate_short_term_login_token_and_get_user_id(self, login_token): + yield self._check_mau_limits() auth_api = self.hs.get_auth() + user_id = None try: macaroon = pymacaroons.Macaroon.deserialize(login_token) user_id = auth_api.get_user_id_from_macaroon(macaroon) auth_api.validate_macaroon(macaroon, "login", True, user_id) - return user_id except Exception: raise AuthError(403, "Invalid token", errcode=Codes.FORBIDDEN) + defer.returnValue(user_id) @defer.inlineCallbacks def delete_access_token(self, access_token): @@ -903,6 +907,19 @@ class AuthHandler(BaseHandler): else: return defer.succeed(False) + @defer.inlineCallbacks + def _check_mau_limits(self): + """ + Ensure that if mau blocking is enabled that invalid users cannot + log in. + """ + if self.hs.config.limit_usage_by_mau is True: + current_mau = yield self.store.count_monthly_users() + if current_mau >= self.hs.config.max_mau_value: + raise AuthError( + 403, "MAU Limit Exceeded", errcode=Codes.MAU_LIMIT_EXCEEDED + ) + @attr.s class MacaroonGenerator(object): diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py index 234f8e8019..289704b241 100644 --- a/synapse/handlers/register.py +++ b/synapse/handlers/register.py @@ -45,7 +45,7 @@ class RegistrationHandler(BaseHandler): hs (synapse.server.HomeServer): """ super(RegistrationHandler, self).__init__(hs) - + self.hs = hs self.auth = hs.get_auth() self._auth_handler = hs.get_auth_handler() self.profile_handler = hs.get_profile_handler() @@ -144,6 +144,7 @@ class RegistrationHandler(BaseHandler): Raises: RegistrationError if there was a problem registering. """ + yield self._check_mau_limits() password_hash = None if password: password_hash = yield self.auth_handler().hash(password) @@ -288,6 +289,7 @@ class RegistrationHandler(BaseHandler): 400, "User ID can only contain characters a-z, 0-9, or '=_-./'", ) + yield self._check_mau_limits() user = UserID(localpart, self.hs.hostname) user_id = user.to_string() @@ -437,7 +439,7 @@ class RegistrationHandler(BaseHandler): """ if localpart is None: raise SynapseError(400, "Request must include user id") - + yield self._check_mau_limits() need_register = True try: @@ -531,3 +533,16 @@ class RegistrationHandler(BaseHandler): remote_room_hosts=remote_room_hosts, action="join", ) + + @defer.inlineCallbacks + def _check_mau_limits(self): + """ + Do not accept registrations if monthly active user limits exceeded + and limiting is enabled + """ + if self.hs.config.limit_usage_by_mau is True: + current_mau = yield self.store.count_monthly_users() + if current_mau >= self.hs.config.max_mau_value: + raise RegistrationError( + 403, "MAU Limit Exceeded", Codes.MAU_LIMIT_EXCEEDED + ) diff --git a/synapse/storage/__init__.py b/synapse/storage/__init__.py index 3bd63cd195..134e4a80f1 100644 --- a/synapse/storage/__init__.py +++ b/synapse/storage/__init__.py @@ -94,6 +94,7 @@ class DataStore(RoomMemberStore, RoomStore, self._clock = hs.get_clock() self.database_engine = hs.database_engine + self.db_conn = db_conn self._stream_id_gen = StreamIdGenerator( db_conn, "events", "stream_ordering", extra_tables=[("local_invites", "stream_id")] @@ -266,6 +267,31 @@ class DataStore(RoomMemberStore, RoomStore, return self.runInteraction("count_users", _count_users) + def count_monthly_users(self): + """Counts the number of users who used this homeserver in the last 30 days + + This method should be refactored with count_daily_users - the only + reason not to is waiting on definition of mau + + Returns: + Defered[int] + """ + def _count_monthly_users(txn): + thirty_days_ago = int(self._clock.time_msec()) - (1000 * 60 * 60 * 24 * 30) + sql = """ + SELECT COALESCE(count(*), 0) FROM ( + SELECT user_id FROM user_ips + WHERE last_seen > ? + GROUP BY user_id + ) u + """ + + txn.execute(sql, (thirty_days_ago,)) + count, = txn.fetchone() + return count + + return self.runInteraction("count_monthly_users", _count_monthly_users) + def count_r30_users(self): """ Counts the number of 30 day retained users, defined as:- diff --git a/synapse/storage/schema/delta/50/make_event_content_nullable.py b/synapse/storage/schema/delta/50/make_event_content_nullable.py index 7d27342e39..6dd467b6c5 100644 --- a/synapse/storage/schema/delta/50/make_event_content_nullable.py +++ b/synapse/storage/schema/delta/50/make_event_content_nullable.py @@ -88,5 +88,5 @@ def run_upgrade(cur, database_engine, *args, **kwargs): "UPDATE sqlite_master SET sql=? WHERE tbl_name='events' AND type='table'", (sql, ), ) - cur.execute("PRAGMA schema_version=%i" % (oldver+1,)) + cur.execute("PRAGMA schema_version=%i" % (oldver + 1,)) cur.execute("PRAGMA writable_schema=OFF") diff --git a/tests/handlers/test_auth.py b/tests/handlers/test_auth.py index 2e5e8e4dec..55eab9e9cf 100644 --- a/tests/handlers/test_auth.py +++ b/tests/handlers/test_auth.py @@ -12,6 +12,7 @@ # 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 mock import Mock import pymacaroons @@ -19,6 +20,7 @@ from twisted.internet import defer import synapse import synapse.api.errors +from synapse.api.errors import AuthError from synapse.handlers.auth import AuthHandler from tests import unittest @@ -37,6 +39,10 @@ class AuthTestCase(unittest.TestCase): self.hs.handlers = AuthHandlers(self.hs) self.auth_handler = self.hs.handlers.auth_handler self.macaroon_generator = self.hs.get_macaroon_generator() + # MAU tests + self.hs.config.max_mau_value = 50 + self.small_number_of_users = 1 + self.large_number_of_users = 100 def test_token_is_a_macaroon(self): token = self.macaroon_generator.generate_access_token("some_user") @@ -71,38 +77,37 @@ class AuthTestCase(unittest.TestCase): v.satisfy_general(verify_nonce) v.verify(macaroon, self.hs.config.macaroon_secret_key) + @defer.inlineCallbacks def test_short_term_login_token_gives_user_id(self): self.hs.clock.now = 1000 token = self.macaroon_generator.generate_short_term_login_token( "a_user", 5000 ) - - self.assertEqual( - "a_user", - self.auth_handler.validate_short_term_login_token_and_get_user_id( - token - ) + user_id = yield self.auth_handler.validate_short_term_login_token_and_get_user_id( + token ) + self.assertEqual("a_user", user_id) # when we advance the clock, the token should be rejected self.hs.clock.now = 6000 with self.assertRaises(synapse.api.errors.AuthError): - self.auth_handler.validate_short_term_login_token_and_get_user_id( + yield self.auth_handler.validate_short_term_login_token_and_get_user_id( token ) + @defer.inlineCallbacks def test_short_term_login_token_cannot_replace_user_id(self): token = self.macaroon_generator.generate_short_term_login_token( "a_user", 5000 ) macaroon = pymacaroons.Macaroon.deserialize(token) + user_id = yield self.auth_handler.validate_short_term_login_token_and_get_user_id( + macaroon.serialize() + ) self.assertEqual( - "a_user", - self.auth_handler.validate_short_term_login_token_and_get_user_id( - macaroon.serialize() - ) + "a_user", user_id ) # add another "user_id" caveat, which might allow us to override the @@ -110,6 +115,57 @@ class AuthTestCase(unittest.TestCase): macaroon.add_first_party_caveat("user_id = b_user") with self.assertRaises(synapse.api.errors.AuthError): - self.auth_handler.validate_short_term_login_token_and_get_user_id( + yield self.auth_handler.validate_short_term_login_token_and_get_user_id( macaroon.serialize() ) + + @defer.inlineCallbacks + def test_mau_limits_disabled(self): + self.hs.config.limit_usage_by_mau = False + # Ensure does not throw exception + yield self.auth_handler.get_access_token_for_user_id('user_a') + + yield self.auth_handler.validate_short_term_login_token_and_get_user_id( + self._get_macaroon().serialize() + ) + + @defer.inlineCallbacks + def test_mau_limits_exceeded(self): + self.hs.config.limit_usage_by_mau = True + self.hs.get_datastore().count_monthly_users = Mock( + return_value=defer.succeed(self.large_number_of_users) + ) + + with self.assertRaises(AuthError): + yield self.auth_handler.get_access_token_for_user_id('user_a') + + self.hs.get_datastore().count_monthly_users = Mock( + return_value=defer.succeed(self.large_number_of_users) + ) + with self.assertRaises(AuthError): + yield self.auth_handler.validate_short_term_login_token_and_get_user_id( + self._get_macaroon().serialize() + ) + + @defer.inlineCallbacks + def test_mau_limits_not_exceeded(self): + self.hs.config.limit_usage_by_mau = True + + self.hs.get_datastore().count_monthly_users = Mock( + return_value=defer.succeed(self.small_number_of_users) + ) + # Ensure does not raise exception + yield self.auth_handler.get_access_token_for_user_id('user_a') + + self.hs.get_datastore().count_monthly_users = Mock( + return_value=defer.succeed(self.small_number_of_users) + ) + yield self.auth_handler.validate_short_term_login_token_and_get_user_id( + self._get_macaroon().serialize() + ) + + def _get_macaroon(self): + token = self.macaroon_generator.generate_short_term_login_token( + "user_a", 5000 + ) + return pymacaroons.Macaroon.deserialize(token) diff --git a/tests/handlers/test_register.py b/tests/handlers/test_register.py index 025fa1be81..0937d71cf6 100644 --- a/tests/handlers/test_register.py +++ b/tests/handlers/test_register.py @@ -17,6 +17,7 @@ from mock import Mock from twisted.internet import defer +from synapse.api.errors import RegistrationError from synapse.handlers.register import RegistrationHandler from synapse.types import UserID, create_requester @@ -77,3 +78,53 @@ class RegistrationTestCase(unittest.TestCase): requester, local_part, display_name) self.assertEquals(result_user_id, user_id) self.assertEquals(result_token, 'secret') + + @defer.inlineCallbacks + def test_cannot_register_when_mau_limits_exceeded(self): + local_part = "someone" + display_name = "someone" + requester = create_requester("@as:test") + store = self.hs.get_datastore() + self.hs.config.limit_usage_by_mau = False + self.hs.config.max_mau_value = 50 + lots_of_users = 100 + small_number_users = 1 + + store.count_monthly_users = Mock(return_value=defer.succeed(lots_of_users)) + + # Ensure does not throw exception + yield self.handler.get_or_create_user(requester, 'a', display_name) + + self.hs.config.limit_usage_by_mau = True + + with self.assertRaises(RegistrationError): + yield self.handler.get_or_create_user(requester, 'b', display_name) + + store.count_monthly_users = Mock(return_value=defer.succeed(small_number_users)) + + self._macaroon_mock_generator("another_secret") + + # Ensure does not throw exception + yield self.handler.get_or_create_user("@neil:matrix.org", 'c', "Neil") + + self._macaroon_mock_generator("another another secret") + store.count_monthly_users = Mock(return_value=defer.succeed(lots_of_users)) + + with self.assertRaises(RegistrationError): + yield self.handler.register(localpart=local_part) + + self._macaroon_mock_generator("another another secret") + store.count_monthly_users = Mock(return_value=defer.succeed(lots_of_users)) + + with self.assertRaises(RegistrationError): + yield self.handler.register_saml2(local_part) + + def _macaroon_mock_generator(self, secret): + """ + Reset macaroon generator in the case where the test creates multiple users + """ + macaroon_generator = Mock( + generate_access_token=Mock(return_value=secret)) + self.hs.get_macaroon_generator = Mock(return_value=macaroon_generator) + self.hs.handlers = RegistrationHandlers(self.hs) + self.handler = self.hs.get_handlers().registration_handler diff --git a/tests/storage/test__init__.py b/tests/storage/test__init__.py new file mode 100644 index 0000000000..f19cb1265c --- /dev/null +++ b/tests/storage/test__init__.py @@ -0,0 +1,65 @@ +# -*- coding: utf-8 -*- +# Copyright 2018 New Vector Ltd +# +# 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 import defer + +import tests.utils + + +class InitTestCase(tests.unittest.TestCase): + def __init__(self, *args, **kwargs): + super(InitTestCase, self).__init__(*args, **kwargs) + self.store = None # type: synapse.storage.DataStore + + @defer.inlineCallbacks + def setUp(self): + hs = yield tests.utils.setup_test_homeserver() + + hs.config.max_mau_value = 50 + hs.config.limit_usage_by_mau = True + self.store = hs.get_datastore() + self.clock = hs.get_clock() + + @defer.inlineCallbacks + def test_count_monthly_users(self): + count = yield self.store.count_monthly_users() + self.assertEqual(0, count) + + yield self._insert_user_ips("@user:server1") + yield self._insert_user_ips("@user:server2") + + count = yield self.store.count_monthly_users() + self.assertEqual(2, count) + + @defer.inlineCallbacks + def _insert_user_ips(self, user): + """ + Helper function to populate user_ips without using batch insertion infra + args: + user (str): specify username i.e. @user:server.com + """ + yield self.store._simple_upsert( + table="user_ips", + keyvalues={ + "user_id": user, + "access_token": "access_token", + "ip": "ip", + "user_agent": "user_agent", + "device_id": "device_id", + }, + values={ + "last_seen": self.clock.time_msec(), + } + ) |