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Move Spam Checker callbacks to a dedicated file (#15453)

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Andrew Morgan 2023-04-17 18:57:40 -06:00 committed by GitHub
parent 929797d939
commit aec639e3e3
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20 changed files with 107 additions and 73 deletions
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1
changelog.d/15453.misc Normal file
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@ -0,0 +1 @@
Move various module API callback registration methods to a dedicated class.

2
synapse/app/_base.py
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@ -64,7 +64,6 @@ from synapse.config.homeserver import HomeServerConfig
from synapse.config.server import ListenerConfig, ManholeConfig, TCPListenerConfig
from synapse.crypto import context_factory
from synapse.events.presence_router import load_legacy_presence_router
from synapse.events.spamcheck import load_legacy_spam_checkers
from synapse.events.third_party_rules import load_legacy_third_party_event_rules
from synapse.handlers.auth import load_legacy_password_auth_providers
from synapse.http.site import SynapseSite
@ -73,6 +72,7 @@ from synapse.logging.opentracing import init_tracer
from synapse.metrics import install_gc_manager, register_threadpool
from synapse.metrics.background_process_metrics import wrap_as_background_process
from synapse.metrics.jemalloc import setup_jemalloc_stats
from synapse.module_api.callbacks.spamchecker_callbacks import load_legacy_spam_checkers
from synapse.types import ISynapseReactor
from synapse.util import SYNAPSE_VERSION
from synapse.util.caches.lrucache import setup_expire_lru_cache_entries

6
synapse/federation/federation_base.py
View File

@ -51,7 +51,7 @@ class FederationBase:
self.server_name = hs.hostname
self.keyring = hs.get_keyring()
self.spam_checker = hs.get_spam_checker()
self._spam_checker_module_callbacks = hs.get_module_api_callbacks().spam_checker
self.store = hs.get_datastores().main
self._clock = hs.get_clock()
self._storage_controllers = hs.get_storage_controllers()
@ -137,9 +137,9 @@ class FederationBase:
)
return redacted_event
spam_check = await self.spam_checker.check_event_for_spam(pdu)
spam_check = await self._spam_checker_module_callbacks.check_event_for_spam(pdu)
if spam_check != self.spam_checker.NOT_SPAM:
if spam_check != self._spam_checker_module_callbacks.NOT_SPAM:
logger.warning("Event contains spam, soft-failing %s", pdu.event_id)
log_kv(
{

8
synapse/federation/federation_server.py
View File

@ -130,7 +130,7 @@ class FederationServer(FederationBase):
super().__init__(hs)
self.handler = hs.get_federation_handler()
self._spam_checker = hs.get_spam_checker()
self._spam_checker_module_callbacks = hs.get_module_api_callbacks().spam_checker
self._federation_event_handler = hs.get_federation_event_handler()
self.state = hs.get_state_handler()
self._event_auth_handler = hs.get_event_auth_handler()
@ -1129,7 +1129,7 @@ class FederationServer(FederationBase):
logger.warning("event id %s: %s", pdu.event_id, e)
raise FederationError("ERROR", 403, str(e), affected=pdu.event_id)
if await self._spam_checker.should_drop_federated_event(pdu):
if await self._spam_checker_module_callbacks.should_drop_federated_event(pdu):
logger.warning(
"Unstaged federated event contains spam, dropping %s", pdu.event_id
)
@ -1174,7 +1174,9 @@ class FederationServer(FederationBase):
origin, event = next
if await self._spam_checker.should_drop_federated_event(event):
if await self._spam_checker_module_callbacks.should_drop_federated_event(
event
):
logger.warning(
"Staged federated event contains spam, dropping %s",
event.event_id,

14
synapse/handlers/directory.py
View File

@ -60,7 +60,7 @@ class DirectoryHandler:
"directory", self.on_directory_query
)
self.spam_checker = hs.get_spam_checker()
self._spam_checker_module_callbacks = hs.get_module_api_callbacks().spam_checker
async def _create_association(
self,
@ -145,10 +145,12 @@ class DirectoryHandler:
403, "You must be in the room to create an alias for it"
)
spam_check = await self.spam_checker.user_may_create_room_alias(
user_id, room_alias
spam_check = (
await self._spam_checker_module_callbacks.user_may_create_room_alias(
user_id, room_alias
)
)
if spam_check != self.spam_checker.NOT_SPAM:
if spam_check != self._spam_checker_module_callbacks.NOT_SPAM:
raise AuthError(
403,
"This user is not permitted to create this alias",
@ -444,7 +446,9 @@ class DirectoryHandler:
"""
user_id = requester.user.to_string()
spam_check = await self.spam_checker.user_may_publish_room(user_id, room_id)
spam_check = await self._spam_checker_module_callbacks.user_may_publish_room(
user_id, room_id
)
if spam_check != NOT_SPAM:
raise AuthError(
403,

4
synapse/handlers/federation.py
View File

@ -141,7 +141,7 @@ class FederationHandler:
self.server_name = hs.hostname
self.keyring = hs.get_keyring()
self.is_mine_id = hs.is_mine_id
self.spam_checker = hs.get_spam_checker()
self._spam_checker_module_callbacks = hs.get_module_api_callbacks().spam_checker
self.event_creation_handler = hs.get_event_creation_handler()
self.event_builder_factory = hs.get_event_builder_factory()
self._event_auth_handler = hs.get_event_auth_handler()
@ -1042,7 +1042,7 @@ class FederationHandler:
if self.hs.config.server.block_non_admin_invites:
raise SynapseError(403, "This server does not accept room invites")
spam_check = await self.spam_checker.user_may_invite(
spam_check = await self._spam_checker_module_callbacks.user_may_invite(
event.sender, event.state_key, event.room_id
)
if spam_check != NOT_SPAM:

10
synapse/handlers/message.py
View File

@ -508,7 +508,7 @@ class EventCreationHandler:
self._bulk_push_rule_evaluator = hs.get_bulk_push_rule_evaluator()
self.spam_checker = hs.get_spam_checker()
self._spam_checker_module_callbacks = hs.get_module_api_callbacks().spam_checker
self.third_party_event_rules: "ThirdPartyEventRules" = (
self.hs.get_third_party_event_rules()
)
@ -1035,8 +1035,12 @@ class EventCreationHandler:
event.sender,
)
spam_check_result = await self.spam_checker.check_event_for_spam(event)
if spam_check_result != self.spam_checker.NOT_SPAM:
spam_check_result = (
await self._spam_checker_module_callbacks.check_event_for_spam(
event
)
)
if spam_check_result != self._spam_checker_module_callbacks.NOT_SPAM:
if isinstance(spam_check_result, tuple):
try:
[code, dict] = spam_check_result

4
synapse/handlers/register.py
View File

@ -110,7 +110,7 @@ class RegistrationHandler:
self._server_notices_mxid = hs.config.servernotices.server_notices_mxid
self._server_name = hs.hostname
self.spam_checker = hs.get_spam_checker()
self._spam_checker_module_callbacks = hs.get_module_api_callbacks().spam_checker
if hs.config.worker.worker_app:
self._register_client = ReplicationRegisterServlet.make_client(hs)
@ -259,7 +259,7 @@ class RegistrationHandler:
await self.check_registration_ratelimit(address)
result = await self.spam_checker.check_registration_for_spam(
result = await self._spam_checker_module_callbacks.check_registration_for_spam(
threepid,
localpart,
user_agent_ips or [],

10
synapse/handlers/room.py
View File

@ -106,7 +106,7 @@ class RoomCreationHandler:
self.auth_blocking = hs.get_auth_blocking()
self.clock = hs.get_clock()
self.hs = hs
self.spam_checker = hs.get_spam_checker()
self._spam_checker_module_callbacks = hs.get_module_api_callbacks().spam_checker
self.event_creation_handler = hs.get_event_creation_handler()
self.room_member_handler = hs.get_room_member_handler()
self._event_auth_handler = hs.get_event_auth_handler()
@ -449,7 +449,9 @@ class RoomCreationHandler:
"""
user_id = requester.user.to_string()
spam_check = await self.spam_checker.user_may_create_room(user_id)
spam_check = await self._spam_checker_module_callbacks.user_may_create_room(
user_id
)
if spam_check != NOT_SPAM:
raise SynapseError(
403,
@ -761,7 +763,9 @@ class RoomCreationHandler:
)
if not is_requester_admin:
spam_check = await self.spam_checker.user_may_create_room(user_id)
spam_check = await self._spam_checker_module_callbacks.user_may_create_room(
user_id
)
if spam_check != NOT_SPAM:
raise SynapseError(
403,

22
synapse/handlers/room_member.py
View File

@ -96,7 +96,7 @@ class RoomMemberHandler(metaclass=abc.ABCMeta):
self.member_as_limiter = Linearizer(max_count=10, name="member_as_limiter")
self.clock = hs.get_clock()
self.spam_checker = hs.get_spam_checker()
self._spam_checker_module_callbacks = hs.get_module_api_callbacks().spam_checker
self.third_party_event_rules = hs.get_third_party_event_rules()
self._server_notices_mxid = self.config.servernotices.server_notices_mxid
self._enable_lookup = hs.config.registration.enable_3pid_lookup
@ -806,7 +806,7 @@ class RoomMemberHandler(metaclass=abc.ABCMeta):
)
block_invite_result = (Codes.FORBIDDEN, {})
spam_check = await self.spam_checker.user_may_invite(
spam_check = await self._spam_checker_module_callbacks.user_may_invite(
requester.user.to_string(), target_id, room_id
)
if spam_check != NOT_SPAM:
@ -940,8 +940,10 @@ class RoomMemberHandler(metaclass=abc.ABCMeta):
# a room then they're allowed to join it.
and not new_room
):
spam_check = await self.spam_checker.user_may_join_room(
target.to_string(), room_id, is_invited=inviter is not None
spam_check = (
await self._spam_checker_module_callbacks.user_may_join_room(
target.to_string(), room_id, is_invited=inviter is not None
)
)
if spam_check != NOT_SPAM:
raise SynapseError(
@ -1550,11 +1552,13 @@ class RoomMemberHandler(metaclass=abc.ABCMeta):
)
else:
# Check if the spamchecker(s) allow this invite to go through.
spam_check = await self.spam_checker.user_may_send_3pid_invite(
inviter_userid=requester.user.to_string(),
medium=medium,
address=address,
room_id=room_id,
spam_check = (
await self._spam_checker_module_callbacks.user_may_send_3pid_invite(
inviter_userid=requester.user.to_string(),
medium=medium,
address=address,
room_id=room_id,
)
)
if spam_check != NOT_SPAM:
raise SynapseError(

6
synapse/handlers/user_directory.py
View File

@ -94,7 +94,7 @@ class UserDirectoryHandler(StateDeltasHandler):
self.is_mine_id = hs.is_mine_id
self.update_user_directory = hs.config.worker.should_update_user_directory
self.search_all_users = hs.config.userdirectory.user_directory_search_all_users
self.spam_checker = hs.get_spam_checker()
self._spam_checker_module_callbacks = hs.get_module_api_callbacks().spam_checker
self._hs = hs
# The current position in the current_state_delta stream
@ -149,7 +149,9 @@ class UserDirectoryHandler(StateDeltasHandler):
# Remove any spammy users from the results.
non_spammy_users = []
for user in results["results"]:
if not await self.spam_checker.check_username_for_spam(user):
if not await self._spam_checker_module_callbacks.check_username_for_spam(
user
):
non_spammy_users.append(user)
results["results"] = non_spammy_users

7
synapse/media/media_storage.py
View File

@ -36,7 +36,6 @@ from twisted.internet.defer import Deferred
from twisted.internet.interfaces import IConsumer
from twisted.protocols.basic import FileSender
import synapse
from synapse.api.errors import NotFoundError
from synapse.logging.context import defer_to_thread, make_deferred_yieldable
from synapse.util import Clock
@ -74,7 +73,7 @@ class MediaStorage:
self.local_media_directory = local_media_directory
self.filepaths = filepaths
self.storage_providers = storage_providers
self.spam_checker = hs.get_spam_checker()
self._spam_checker_module_callbacks = hs.get_module_api_callbacks().spam_checker
self.clock = hs.get_clock()
async def store_file(self, source: IO, file_info: FileInfo) -> str:
@ -145,10 +144,10 @@ class MediaStorage:
f.flush()
f.close()
spam_check = await self.spam_checker.check_media_file_for_spam(
spam_check = await self._spam_checker_module_callbacks.check_media_file_for_spam(
ReadableFileWrapper(self.clock, fname), file_info
)
if spam_check != synapse.module_api.NOT_SPAM:
if spam_check != self._spam_checker_module_callbacks.NOT_SPAM:
logger.info("Blocking media due to spam checker")
# Note that we'll delete the stored media, due to the
# try/except below. The media also won't be stored in

33
synapse/module_api/__init__.py
View File

@ -44,20 +44,6 @@ from synapse.events.presence_router import (
GET_USERS_FOR_STATES_CALLBACK,
PresenceRouter,
)
from synapse.events.spamcheck import (
CHECK_EVENT_FOR_SPAM_CALLBACK,
CHECK_MEDIA_FILE_FOR_SPAM_CALLBACK,
CHECK_REGISTRATION_FOR_SPAM_CALLBACK,
CHECK_USERNAME_FOR_SPAM_CALLBACK,
SHOULD_DROP_FEDERATED_EVENT_CALLBACK,
USER_MAY_CREATE_ROOM_ALIAS_CALLBACK,
USER_MAY_CREATE_ROOM_CALLBACK,
USER_MAY_INVITE_CALLBACK,
USER_MAY_JOIN_ROOM_CALLBACK,
USER_MAY_PUBLISH_ROOM_CALLBACK,
USER_MAY_SEND_3PID_INVITE_CALLBACK,
SpamChecker,
)
from synapse.events.third_party_rules import (
CHECK_CAN_DEACTIVATE_USER_CALLBACK,
CHECK_CAN_SHUTDOWN_ROOM_CALLBACK,
@ -105,6 +91,20 @@ from synapse.module_api.callbacks.account_validity_callbacks import (
ON_LEGACY_SEND_MAIL_CALLBACK,
ON_USER_REGISTRATION_CALLBACK,
)
from synapse.module_api.callbacks.spamchecker_callbacks import (
CHECK_EVENT_FOR_SPAM_CALLBACK,
CHECK_MEDIA_FILE_FOR_SPAM_CALLBACK,
CHECK_REGISTRATION_FOR_SPAM_CALLBACK,
CHECK_USERNAME_FOR_SPAM_CALLBACK,
SHOULD_DROP_FEDERATED_EVENT_CALLBACK,
USER_MAY_CREATE_ROOM_ALIAS_CALLBACK,
USER_MAY_CREATE_ROOM_CALLBACK,
USER_MAY_INVITE_CALLBACK,
USER_MAY_JOIN_ROOM_CALLBACK,
USER_MAY_PUBLISH_ROOM_CALLBACK,
USER_MAY_SEND_3PID_INVITE_CALLBACK,
SpamCheckerModuleApiCallbacks,
)
from synapse.rest.client.login import LoginResponse
from synapse.storage import DataStore
from synapse.storage.background_updates import (
@ -147,7 +147,7 @@ are loaded into Synapse.
"""
PRESENCE_ALL_USERS = PresenceRouter.ALL_USERS
NOT_SPAM = SpamChecker.NOT_SPAM
NOT_SPAM = SpamCheckerModuleApiCallbacks.NOT_SPAM
__all__ = [
"errors",
@ -271,7 +271,6 @@ class ModuleApi:
self._public_room_list_manager = PublicRoomListManager(hs)
self._account_data_manager = AccountDataManager(hs)
self._spam_checker = hs.get_spam_checker()
self._third_party_event_rules = hs.get_third_party_event_rules()
self._password_auth_provider = hs.get_password_auth_provider()
self._presence_router = hs.get_presence_router()
@ -305,7 +304,7 @@ class ModuleApi:
Added in Synapse v1.37.0.
"""
return self._spam_checker.register_callbacks(
return self._callbacks.spam_checker.register_callbacks(
check_event_for_spam=check_event_for_spam,
should_drop_federated_event=should_drop_federated_event,
user_may_join_room=user_may_join_room,

11
synapse/module_api/callbacks/__init__.py
View File

@ -12,11 +12,20 @@
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import TYPE_CHECKING
if TYPE_CHECKING:
from synapse.server import HomeServer
from synapse.module_api.callbacks.account_validity_callbacks import (
AccountValidityModuleApiCallbacks,
)
from synapse.module_api.callbacks.spamchecker_callbacks import (
SpamCheckerModuleApiCallbacks,
)
class ModuleApiCallbacks:
def __init__(self) -> None:
def __init__(self, hs: "HomeServer") -> None:
self.account_validity = AccountValidityModuleApiCallbacks()
self.spam_checker = SpamCheckerModuleApiCallbacks(hs)

3
synapse/events/spamcheck.py → synapse/module_api/callbacks/spamchecker_callbacks.py
View File

@ -286,11 +286,10 @@ def load_legacy_spam_checkers(hs: "synapse.server.HomeServer") -> None:
api.register_spam_checker_callbacks(**hooks)
class SpamChecker:
class SpamCheckerModuleApiCallbacks:
NOT_SPAM: Literal["NOT_SPAM"] = "NOT_SPAM"
def __init__(self, hs: "synapse.server.HomeServer") -> None:
self.hs = hs
self.clock = hs.get_clock()
self._check_event_for_spam_callbacks: List[CHECK_EVENT_FOR_SPAM_CALLBACK] = []

7
synapse/server.py
View File

@ -42,7 +42,6 @@ from synapse.crypto.context_factory import RegularPolicyForHTTPS
from synapse.crypto.keyring import Keyring
from synapse.events.builder import EventBuilderFactory
from synapse.events.presence_router import PresenceRouter
from synapse.events.spamcheck import SpamChecker
from synapse.events.third_party_rules import ThirdPartyEventRules
from synapse.events.utils import EventClientSerializer
from synapse.federation.federation_client import FederationClient
@ -687,10 +686,6 @@ class HomeServer(metaclass=abc.ABCMeta):
def get_stats_handler(self) -> StatsHandler:
return StatsHandler(self)
@cache_in_self
def get_spam_checker(self) -> SpamChecker:
return SpamChecker(self)
@cache_in_self
def get_third_party_event_rules(self) -> ThirdPartyEventRules:
return ThirdPartyEventRules(self)
@ -803,7 +798,7 @@ class HomeServer(metaclass=abc.ABCMeta):
@cache_in_self
def get_module_api_callbacks(self) -> ModuleApiCallbacks:
return ModuleApiCallbacks()
return ModuleApiCallbacks(self)
@cache_in_self
def get_account_data_handler(self) -> AccountDataHandler:

2
tests/handlers/test_user_directory.py
View File

@ -792,7 +792,7 @@ class UserDirectoryTestCase(unittest.HomeserverTestCase):
return False
# Configure a spam checker that does not filter any users.
spam_checker = self.hs.get_spam_checker()
spam_checker = self.hs.get_module_api_callbacks().spam_checker
spam_checker._check_username_for_spam_callbacks = [allow_all]
# The results do not change:

2
tests/media/test_media_storage.py
View File

@ -31,7 +31,6 @@ from twisted.test.proto_helpers import MemoryReactor
from synapse.api.errors import Codes
from synapse.events import EventBase
from synapse.events.spamcheck import load_legacy_spam_checkers
from synapse.http.types import QueryParams
from synapse.logging.context import make_deferred_yieldable
from synapse.media._base import FileInfo
@ -39,6 +38,7 @@ from synapse.media.filepath import MediaFilePaths
from synapse.media.media_storage import MediaStorage, ReadableFileWrapper
from synapse.media.storage_provider import FileStorageProviderBackend
from synapse.module_api import ModuleApi
from synapse.module_api.callbacks.spamchecker_callbacks import load_legacy_spam_checkers
from synapse.rest import admin
from synapse.rest.client import login
from synapse.server import HomeServer

26
tests/rest/client/test_rooms.py
View File

@ -814,7 +814,9 @@ class RoomsCreateTestCase(RoomBase):
return False
join_mock = Mock(side_effect=user_may_join_room)
self.hs.get_spam_checker()._user_may_join_room_callbacks.append(join_mock)
self.hs.get_module_api_callbacks().spam_checker._user_may_join_room_callbacks.append(
join_mock
)
channel = self.make_request(
"POST",
@ -840,7 +842,9 @@ class RoomsCreateTestCase(RoomBase):
return Codes.CONSENT_NOT_GIVEN
join_mock = Mock(side_effect=user_may_join_room_codes)
self.hs.get_spam_checker()._user_may_join_room_callbacks.append(join_mock)
self.hs.get_module_api_callbacks().spam_checker._user_may_join_room_callbacks.append(
join_mock
)
channel = self.make_request(
"POST",
@ -1162,7 +1166,9 @@ class RoomJoinTestCase(RoomBase):
# `spec` argument is needed for this function mock to have `__qualname__`, which
# is needed for `Measure` metrics buried in SpamChecker.
callback_mock = Mock(side_effect=user_may_join_room, spec=lambda *x: None)
self.hs.get_spam_checker()._user_may_join_room_callbacks.append(callback_mock)
self.hs.get_module_api_callbacks().spam_checker._user_may_join_room_callbacks.append(
callback_mock
)
# Join a first room, without being invited to it.
self.helper.join(self.room1, self.user2, tok=self.tok2)
@ -1227,7 +1233,9 @@ class RoomJoinTestCase(RoomBase):
# `spec` argument is needed for this function mock to have `__qualname__`, which
# is needed for `Measure` metrics buried in SpamChecker.
callback_mock = Mock(side_effect=user_may_join_room, spec=lambda *x: None)
self.hs.get_spam_checker()._user_may_join_room_callbacks.append(callback_mock)
self.hs.get_module_api_callbacks().spam_checker._user_may_join_room_callbacks.append(
callback_mock
)
# Join a first room, without being invited to it.
self.helper.join(self.room1, self.user2, tok=self.tok2)
@ -1643,7 +1651,7 @@ class RoomMessagesTestCase(RoomBase):
spam_checker = SpamCheck()
self.hs.get_spam_checker()._check_event_for_spam_callbacks.append(
self.hs.get_module_api_callbacks().spam_checker._check_event_for_spam_callbacks.append(
spam_checker.check_event_for_spam
)
@ -3381,7 +3389,9 @@ class ThreepidInviteTestCase(unittest.HomeserverTestCase):
# `spec` argument is needed for this function mock to have `__qualname__`, which
# is needed for `Measure` metrics buried in SpamChecker.
mock = Mock(return_value=make_awaitable(True), spec=lambda *x: None)
self.hs.get_spam_checker()._user_may_send_3pid_invite_callbacks.append(mock)
self.hs.get_module_api_callbacks().spam_checker._user_may_send_3pid_invite_callbacks.append(
mock
)
# Send a 3PID invite into the room and check that it succeeded.
email_to_invite = "teresa@example.com"
@ -3446,7 +3456,9 @@ class ThreepidInviteTestCase(unittest.HomeserverTestCase):
return_value=make_awaitable(synapse.module_api.NOT_SPAM),
spec=lambda *x: None,
)
self.hs.get_spam_checker()._user_may_send_3pid_invite_callbacks.append(mock)
self.hs.get_module_api_callbacks().spam_checker._user_may_send_3pid_invite_callbacks.append(
mock
)
# Send a 3PID invite into the room and check that it succeeded.
email_to_invite = "teresa@example.com"

2
tests/server.py
View File

@ -73,11 +73,11 @@ from twisted.web.server import Request, Site
from synapse.config.database import DatabaseConnectionConfig
from synapse.config.homeserver import HomeServerConfig
from synapse.events.presence_router import load_legacy_presence_router
from synapse.events.spamcheck import load_legacy_spam_checkers
from synapse.events.third_party_rules import load_legacy_third_party_event_rules
from synapse.handlers.auth import load_legacy_password_auth_providers
from synapse.http.site import SynapseRequest
from synapse.logging.context import ContextResourceUsage
from synapse.module_api.callbacks.spamchecker_callbacks import load_legacy_spam_checkers
from synapse.server import HomeServer
from synapse.storage import DataStore
from synapse.storage.database import LoggingDatabaseConnection