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Pass through room version to event auth

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This commit is contained in:
Erik Johnston 2019-01-25 18:31:41 +00:00
parent b6dce9b9fd
commit ae2a957dba
10 changed files with 69 additions and 27 deletions
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14
synapse/api/auth.py
View file

@ -65,7 +65,7 @@ class Auth(object):
register_cache("cache", "token_cache", self.token_cache)
@defer.inlineCallbacks
def check_from_context(self, event, context, do_sig_check=True):
def check_from_context(self, room_version, event, context, do_sig_check=True):
prev_state_ids = yield context.get_prev_state_ids(self.store)
auth_events_ids = yield self.compute_auth_events(
event, prev_state_ids, for_verification=True,
@ -74,12 +74,16 @@ class Auth(object):
auth_events = {
(e.type, e.state_key): e for e in itervalues(auth_events)
}
self.check(event, auth_events=auth_events, do_sig_check=do_sig_check)
self.check(
room_version, event,
auth_events=auth_events, do_sig_check=do_sig_check,
)
def check(self, event, auth_events, do_sig_check=True):
def check(self, room_version, event, auth_events, do_sig_check=True):
""" Checks if this event is correctly authed.
Args:
room_version (str): version of the room
event: the event being checked.
auth_events (dict: event-key -> event): the existing room state.
@ -88,7 +92,9 @@ class Auth(object):
True if the auth checks pass.
"""
with Measure(self.clock, "auth.check"):
event_auth.check(event, auth_events, do_sig_check=do_sig_check)
event_auth.check(
room_version, event, auth_events, do_sig_check=do_sig_check
)
@defer.inlineCallbacks
def check_joined_room(self, room_id, user_id, current_state=None):

3
synapse/event_auth.py
View file

@ -27,10 +27,11 @@ from synapse.types import UserID, get_domain_from_id
logger = logging.getLogger(__name__)
def check(event, auth_events, do_sig_check=True, do_size_check=True):
def check(room_version, event, auth_events, do_sig_check=True, do_size_check=True):
""" Checks if this event is correctly authed.
Args:
room_version (str): the version of the room
event: the event being checked.
auth_events (dict: event-key -> event): the existing room state.

20
synapse/handlers/federation.py
View file

@ -1189,7 +1189,9 @@ class FederationHandler(BaseHandler):
# The remote hasn't signed it yet, obviously. We'll do the full checks
# when we get the event back in `on_send_join_request`
yield self.auth.check_from_context(event, context, do_sig_check=False)
yield self.auth.check_from_context(
room_version, event, context, do_sig_check=False,
)
defer.returnValue(event)
@ -1388,7 +1390,9 @@ class FederationHandler(BaseHandler):
try:
# The remote hasn't signed it yet, obviously. We'll do the full checks
# when we get the event back in `on_send_leave_request`
yield self.auth.check_from_context(event, context, do_sig_check=False)
yield self.auth.check_from_context(
room_version, event, context, do_sig_check=False,
)
except AuthError as e:
logger.warn("Failed to create new leave %r because %s", event, e)
raise e
@ -1683,7 +1687,7 @@ class FederationHandler(BaseHandler):
auth_for_e[(EventTypes.Create, "")] = create_event
try:
self.auth.check(e, auth_events=auth_for_e)
self.auth.check(room_version, e, auth_events=auth_for_e)
except SynapseError as err:
# we may get SynapseErrors here as well as AuthErrors. For
# instance, there are a couple of (ancient) events in some
@ -1927,6 +1931,8 @@ class FederationHandler(BaseHandler):
current_state = set(e.event_id for e in auth_events.values())
different_auth = event_auth_events - current_state
room_version = yield self.store.get_room_version(event.room_id)
if different_auth and not event.internal_metadata.is_outlier():
# Do auth conflict res.
logger.info("Different auth: %s", different_auth)
@ -1951,8 +1957,6 @@ class FederationHandler(BaseHandler):
(d.type, d.state_key): d for d in different_events if d
})
room_version = yield self.store.get_room_version(event.room_id)
new_state = yield self.state_handler.resolve_events(
room_version,
[list(local_view.values()), list(remote_view.values())],
@ -2052,7 +2056,7 @@ class FederationHandler(BaseHandler):
)
try:
self.auth.check(event, auth_events=auth_events)
self.auth.check(room_version, event, auth_events=auth_events)
except AuthError as e:
logger.warn("Failed auth resolution for %r because %s", event, e)
raise e
@ -2288,7 +2292,7 @@ class FederationHandler(BaseHandler):
)
try:
yield self.auth.check_from_context(event, context)
yield self.auth.check_from_context(room_version, event, context)
except AuthError as e:
logger.warn("Denying new third party invite %r because %s", event, e)
raise e
@ -2330,7 +2334,7 @@ class FederationHandler(BaseHandler):
)
try:
self.auth.check_from_context(event, context)
self.auth.check_from_context(room_version, event, context)
except AuthError as e:
logger.warn("Denying third party invite %r because %s", event, e)
raise e

7
synapse/handlers/message.py
View file

@ -611,8 +611,13 @@ class EventCreationHandler(object):
extra_users (list(UserID)): Any extra users to notify about event
"""
if event.is_state() and (event.type, event.state_key) == (EventTypes.Create, ""):
room_version = event.content["room_version"]
else:
room_version = yield self.store.get_room_version(event.room_id)
try:
yield self.auth.check_from_context(event, context)
yield self.auth.check_from_context(room_version, event, context)
except AuthError as err:
logger.warn("Denying new event %r because %s", event, err)
raise err

5
synapse/handlers/room.py
View file

@ -123,7 +123,10 @@ class RoomCreationHandler(BaseHandler):
token_id=requester.access_token_id,
)
)
yield self.auth.check_from_context(tombstone_event, tombstone_context)
old_room_version = yield self.store.get_room_version(old_room_id)
yield self.auth.check_from_context(
old_room_version, tombstone_event, tombstone_context,
)
yield self.clone_exiting_room(
requester,

2
synapse/state/__init__.py
View file

@ -611,7 +611,7 @@ def resolve_events_with_store(room_version, state_sets, event_map, state_res_sto
RoomVersions.VDH_TEST, RoomVersions.STATE_V2_TEST, RoomVersions.V2,
):
return v2.resolve_events_with_store(
state_sets, event_map, state_res_store,
room_version, state_sets, event_map, state_res_store,
)
else:
# This should only happen if we added a version but forgot to add it to

14
synapse/state/v1.py
View file

@ -21,7 +21,7 @@ from six import iteritems, iterkeys, itervalues
from twisted.internet import defer
from synapse import event_auth
from synapse.api.constants import EventTypes
from synapse.api.constants import EventTypes, RoomVersions
from synapse.api.errors import AuthError
logger = logging.getLogger(__name__)
@ -274,7 +274,11 @@ def _resolve_auth_events(events, auth_events):
auth_events[(prev_event.type, prev_event.state_key)] = prev_event
try:
# The signatures have already been checked at this point
event_auth.check(event, auth_events, do_sig_check=False, do_size_check=False)
event_auth.check(
RoomVersions.V1, event, auth_events,
do_sig_check=False,
do_size_check=False,
)
prev_event = event
except AuthError:
return prev_event
@ -286,7 +290,11 @@ def _resolve_normal_events(events, auth_events):
for event in _ordered_events(events):
try:
# The signatures have already been checked at this point
event_auth.check(event, auth_events, do_sig_check=False, do_size_check=False)
event_auth.check(
RoomVersions.V1, event, auth_events,
do_sig_check=False,
do_size_check=False,
)
return event
except AuthError:
pass

14
synapse/state/v2.py
View file

@ -29,10 +29,12 @@ logger = logging.getLogger(__name__)
@defer.inlineCallbacks
def resolve_events_with_store(state_sets, event_map, state_res_store):
def resolve_events_with_store(room_version, state_sets, event_map, state_res_store):
"""Resolves the state using the v2 state resolution algorithm
Args:
room_version (str): The room version
state_sets(list): List of dicts of (type, state_key) -> event_id,
which are the different state groups to resolve.
@ -104,7 +106,7 @@ def resolve_events_with_store(state_sets, event_map, state_res_store):
# Now sequentially auth each one
resolved_state = yield _iterative_auth_checks(
sorted_power_events, unconflicted_state, event_map,
room_version, sorted_power_events, unconflicted_state, event_map,
state_res_store,
)
@ -129,7 +131,7 @@ def resolve_events_with_store(state_sets, event_map, state_res_store):
logger.debug("resolving remaining events")
resolved_state = yield _iterative_auth_checks(
leftover_events, resolved_state, event_map,
room_version, leftover_events, resolved_state, event_map,
state_res_store,
)
@ -350,11 +352,13 @@ def _reverse_topological_power_sort(event_ids, event_map, state_res_store, auth_
@defer.inlineCallbacks
def _iterative_auth_checks(event_ids, base_state, event_map, state_res_store):
def _iterative_auth_checks(room_version, event_ids, base_state, event_map,
state_res_store):
"""Sequentially apply auth checks to each event in given list, updating the
state as it goes along.
Args:
room_version (str)
event_ids (list[str]): Ordered list of events to apply auth checks to
base_state (dict[tuple[str, str], str]): The set of state to start with
event_map (dict[str,FrozenEvent])
@ -385,7 +389,7 @@ def _iterative_auth_checks(event_ids, base_state, event_map, state_res_store):
try:
event_auth.check(
event, auth_events,
room_version, event, auth_events,
do_sig_check=False,
do_size_check=False
)

4
tests/state/test_v2.py
View file

@ -19,7 +19,7 @@ from six.moves import zip
import attr
from synapse.api.constants import EventTypes, JoinRules, Membership
from synapse.api.constants import EventTypes, JoinRules, Membership, RoomVersions
from synapse.event_auth import auth_types_for_event
from synapse.events import FrozenEvent
from synapse.state.v2 import lexicographical_topological_sort, resolve_events_with_store
@ -539,6 +539,7 @@ class StateTestCase(unittest.TestCase):
state_before = dict(state_at_event[prev_events[0]])
else:
state_d = resolve_events_with_store(
RoomVersions.V2,
[state_at_event[n] for n in prev_events],
event_map=event_map,
state_res_store=TestStateResolutionStore(event_map),
@ -685,6 +686,7 @@ class SimpleParamStateTestCase(unittest.TestCase):
# Test that we correctly handle passing `None` as the event_map
state_d = resolve_events_with_store(
RoomVersions.V2,
[self.state_at_bob, self.state_at_charlie],
event_map=None,
state_res_store=TestStateResolutionStore(self.event_map),

13
tests/test_event_auth.py
View file

@ -16,6 +16,7 @@
import unittest
from synapse import event_auth
from synapse.api.constants import RoomVersions
from synapse.api.errors import AuthError
from synapse.events import FrozenEvent
@ -35,12 +36,16 @@ class EventAuthTestCase(unittest.TestCase):
}
# creator should be able to send state
event_auth.check(_random_state_event(creator), auth_events, do_sig_check=False)
event_auth.check(
RoomVersions.V1, _random_state_event(creator), auth_events,
do_sig_check=False,
)
# joiner should not be able to send state
self.assertRaises(
AuthError,
event_auth.check,
RoomVersions.V1,
_random_state_event(joiner),
auth_events,
do_sig_check=False,
@ -69,13 +74,17 @@ class EventAuthTestCase(unittest.TestCase):
self.assertRaises(
AuthError,
event_auth.check,
RoomVersions.V1,
_random_state_event(pleb),
auth_events,
do_sig_check=False,
),
# king should be able to send state
event_auth.check(_random_state_event(king), auth_events, do_sig_check=False)
event_auth.check(
RoomVersions.V1, _random_state_event(king), auth_events,
do_sig_check=False,
)
# helpers for making events