handle federation not telling us about prev_events
Amber Brown
parent
cd6bcdaf87
commit
77078d6c8e
|
|
@ -549,7 +549,9 @@ class FederationServer(FederationBase):
|
|||
affected=pdu.event_id,
|
||||
)
|
||||
|
||||
yield self.handler.on_receive_pdu(origin, pdu, get_missing=True)
|
||||
yield self.handler.on_receive_pdu(
|
||||
origin, pdu, get_missing=True, sent_to_us_directly=True,
|
||||
)
|
||||
|
||||
def __str__(self):
|
||||
return "<ReplicationLayer(%s)>" % self.server_name
|
||||
|
|
|
|||
|
|
@ -44,6 +44,7 @@ from synapse.util.frozenutils import unfreeze
|
|||
from synapse.crypto.event_signing import (
|
||||
compute_event_signature, add_hashes_and_signatures,
|
||||
)
|
||||
from synapse.state import resolve_events_with_factory
|
||||
from synapse.types import UserID, get_domain_from_id
|
||||
|
||||
from synapse.events.utils import prune_event
|
||||
|
|
@ -89,7 +90,9 @@ class FederationHandler(BaseHandler):
|
|||
|
||||
@defer.inlineCallbacks
|
||||
@log_function
|
||||
def on_receive_pdu(self, origin, pdu, get_missing=True):
|
||||
def on_receive_pdu(
|
||||
self, origin, pdu, get_missing=True, sent_to_us_directly=False,
|
||||
):
|
||||
""" Process a PDU received via a federation /send/ transaction, or
|
||||
via backfill of missing prev_events
|
||||
|
||||
|
|
@ -163,7 +166,7 @@ class FederationHandler(BaseHandler):
|
|||
"Ignoring PDU %s for room %s from %s as we've left the room!",
|
||||
pdu.event_id, pdu.room_id, origin,
|
||||
)
|
||||
return
|
||||
defer.returnValue(None)
|
||||
|
||||
state = None
|
||||
|
||||
|
|
@ -225,26 +228,54 @@ class FederationHandler(BaseHandler):
|
|||
list(prevs - seen)[:5],
|
||||
)
|
||||
|
||||
if prevs - seen:
|
||||
logger.info(
|
||||
"Still missing %d events for room %r: %r...",
|
||||
len(prevs - seen), pdu.room_id, list(prevs - seen)[:5]
|
||||
if sent_to_us_directly and prevs - seen:
|
||||
# If they have sent it to us directly, and the server
|
||||
# isn't telling us about the auth events that it's
|
||||
# made a message referencing, we explode
|
||||
raise FederationError(
|
||||
"ERROR",
|
||||
403,
|
||||
("Your server isn't divulging details about prev_events "
|
||||
"referenced in this event."),
|
||||
affected=pdu.event_id,
|
||||
)
|
||||
fetch_state = True
|
||||
elif prevs - seen:
|
||||
# If we're walking back up the chain to fetch it, then
|
||||
# try and find the states. If we can't get the states,
|
||||
# discard it.
|
||||
state_groups = []
|
||||
auth_chains = set()
|
||||
try:
|
||||
# Get the ones we know about
|
||||
ours = yield self.store.get_state_groups(pdu.room_id, list(seen))
|
||||
state_groups.append(ours)
|
||||
|
||||
if fetch_state:
|
||||
# We need to get the state at this event, since we haven't
|
||||
# processed all the prev events.
|
||||
logger.debug(
|
||||
"_handle_new_pdu getting state for %s",
|
||||
pdu.room_id
|
||||
)
|
||||
try:
|
||||
state, auth_chain = yield self.replication_layer.get_state_for_room(
|
||||
origin, pdu.room_id, pdu.event_id,
|
||||
)
|
||||
except Exception:
|
||||
logger.exception("Failed to get state for event: %s", pdu.event_id)
|
||||
for p in prevs - seen:
|
||||
state, auth_chain = yield self.replication_layer.get_state_for_room(
|
||||
origin, pdu.room_id, p
|
||||
)
|
||||
auth_chains.update(auth_chain)
|
||||
state_group = {
|
||||
(x.type, x.state_key): x.event_id for x in state
|
||||
}
|
||||
state_groups.append(state_group)
|
||||
|
||||
def fetch(ev_ids):
|
||||
return self.store.get_events(
|
||||
ev_ids, get_prev_content=False, check_redacted=False,
|
||||
)
|
||||
|
||||
state = yield resolve_events_with_factory(state_groups, {pdu.event_id: pdu}, fetch)
|
||||
|
||||
state = yield self.store.get_events(state.values())
|
||||
state = state.values()
|
||||
except Exception:
|
||||
raise FederationError(
|
||||
"ERROR",
|
||||
403,
|
||||
"We can't get valid state history.",
|
||||
affected=pdu.event_id,
|
||||
)
|
||||
|
||||
yield self._process_received_pdu(
|
||||
origin,
|
||||
|
|
@ -322,11 +353,17 @@ class FederationHandler(BaseHandler):
|
|||
|
||||
for e in missing_events:
|
||||
logger.info("Handling found event %s", e.event_id)
|
||||
yield self.on_receive_pdu(
|
||||
origin,
|
||||
e,
|
||||
get_missing=False
|
||||
)
|
||||
try:
|
||||
yield self.on_receive_pdu(
|
||||
origin,
|
||||
e,
|
||||
get_missing=False
|
||||
)
|
||||
except FederationError as e:
|
||||
if e.code == 403:
|
||||
logger.warn("Event %s failed history check.")
|
||||
else:
|
||||
raise
|
||||
|
||||
@log_function
|
||||
@defer.inlineCallbacks
|
||||
|
|
|
|||
|
|
@ -0,0 +1,235 @@
|
|||
|
||||
from twisted.internet.defer import Deferred, succeed, maybeDeferred
|
||||
|
||||
from synapse.util import Clock
|
||||
from synapse.events import FrozenEvent
|
||||
from synapse.types import Requester, UserID
|
||||
from synapse.replication.slave.storage.events import SlavedEventStore
|
||||
|
||||
from tests import unittest
|
||||
from tests.server import make_request, setup_test_homeserver, ThreadedMemoryReactorClock
|
||||
|
||||
from mock import Mock
|
||||
|
||||
from synapse.api.errors import CodeMessageException, HttpResponseException
|
||||
|
||||
|
||||
class MessageAcceptTests(unittest.TestCase):
|
||||
def setUp(self):
|
||||
|
||||
self.http_client = Mock()
|
||||
self.reactor = ThreadedMemoryReactorClock()
|
||||
self.hs_clock = Clock(self.reactor)
|
||||
self.homeserver = setup_test_homeserver(
|
||||
http_client=self.http_client, clock=self.hs_clock, reactor=self.reactor
|
||||
)
|
||||
|
||||
user_id = UserID("us", "test")
|
||||
our_user = Requester(user_id, None, False, None, None)
|
||||
room_creator = self.homeserver.get_room_creation_handler()
|
||||
room = room_creator.create_room(
|
||||
our_user, room_creator.PRESETS_DICT["public_chat"], ratelimit=False
|
||||
)
|
||||
self.reactor.advance(0.1)
|
||||
self.room_id = self.successResultOf(room)["room_id"]
|
||||
|
||||
# Figure out what the most recent event is
|
||||
most_recent = self.successResultOf(
|
||||
self.homeserver.datastore.get_latest_event_ids_in_room(self.room_id)
|
||||
)[0]
|
||||
|
||||
join_event = FrozenEvent(
|
||||
{
|
||||
"room_id": self.room_id,
|
||||
"sender": "@baduser:test.serv",
|
||||
"state_key": "@baduser:test.serv",
|
||||
"event_id": "$join:test.serv",
|
||||
"depth": 1000,
|
||||
"origin_server_ts": 1,
|
||||
"type": "m.room.member",
|
||||
"origin": "test.servx",
|
||||
"content": {"membership": "join"},
|
||||
"auth_events": [],
|
||||
"prev_state": [(most_recent, {})],
|
||||
"prev_events": [(most_recent, {})],
|
||||
}
|
||||
)
|
||||
|
||||
self.handler = self.homeserver.get_handlers().federation_handler
|
||||
self.handler.do_auth = lambda *a, **b: succeed(True)
|
||||
self.client = self.homeserver.get_federation_client()
|
||||
self.client._check_sigs_and_hash_and_fetch = lambda dest, pdus, **k: succeed(
|
||||
pdus
|
||||
)
|
||||
|
||||
# Send the join, it should return None (which is not an error)
|
||||
d = self.handler.on_receive_pdu(
|
||||
"test.serv", join_event, sent_to_us_directly=True
|
||||
)
|
||||
self.reactor.advance(1)
|
||||
self.assertEqual(self.successResultOf(d), None)
|
||||
|
||||
# Make sure we actually joined the room
|
||||
self.assertEqual(
|
||||
self.successResultOf(
|
||||
self.homeserver.datastore.get_latest_event_ids_in_room(self.room_id)
|
||||
)[0],
|
||||
"$join:test.serv",
|
||||
)
|
||||
|
||||
def test_cant_hide_direct_ancestors(self):
|
||||
"""
|
||||
If you send a message, you must be able to provide the direct
|
||||
prev_events that said event references.
|
||||
"""
|
||||
|
||||
def post_json(destination, path, data, headers=None, timeout=0):
|
||||
# If it asks us for new missing events, give them NOTHING
|
||||
if path.startswith("/_matrix/federation/v1/get_missing_events/"):
|
||||
return {"events": []}
|
||||
|
||||
self.http_client.post_json = post_json
|
||||
|
||||
# Figure out what the most recent event is
|
||||
most_recent = self.successResultOf(
|
||||
self.homeserver.datastore.get_latest_event_ids_in_room(self.room_id)
|
||||
)[0]
|
||||
|
||||
# Now lie about an event
|
||||
lying_event = FrozenEvent(
|
||||
{
|
||||
"room_id": self.room_id,
|
||||
"sender": "@baduser:test.serv",
|
||||
"event_id": "one:test.serv",
|
||||
"depth": 1000,
|
||||
"origin_server_ts": 1,
|
||||
"type": "m.room.message",
|
||||
"origin": "test.serv",
|
||||
"content": "hewwo?",
|
||||
"auth_events": [],
|
||||
"prev_events": [("two:test.serv", {}), (most_recent, {})],
|
||||
}
|
||||
)
|
||||
|
||||
d = self.handler.on_receive_pdu(
|
||||
"test.serv", lying_event, sent_to_us_directly=True
|
||||
)
|
||||
|
||||
# Step the reactor, so the database fetches come back
|
||||
self.reactor.advance(1)
|
||||
|
||||
# on_receive_pdu should throw an error
|
||||
failure = self.failureResultOf(d)
|
||||
self.assertEqual(
|
||||
failure.value.args[0],
|
||||
(
|
||||
"ERROR 403: Your server isn't divulging details about prev_events "
|
||||
"referenced in this event."
|
||||
),
|
||||
)
|
||||
|
||||
# Make sure the invalid event isn't there
|
||||
extrem = self.homeserver.datastore.get_latest_event_ids_in_room(self.room_id)
|
||||
self.assertEqual(self.successResultOf(extrem)[0], "$join:test.serv")
|
||||
|
||||
@unittest.DEBUG
|
||||
def test_cant_hide_past_history(self):
|
||||
"""
|
||||
If you send a message, you must be able to provide the direct
|
||||
prev_events that said event references.
|
||||
"""
|
||||
|
||||
def post_json(destination, path, data, headers=None, timeout=0):
|
||||
if path.startswith("/_matrix/federation/v1/get_missing_events/"):
|
||||
return {
|
||||
"events": [
|
||||
{
|
||||
"room_id": self.room_id,
|
||||
"sender": "@baduser:test.serv",
|
||||
"event_id": "three:test.serv",
|
||||
"depth": 1000,
|
||||
"origin_server_ts": 1,
|
||||
"type": "m.room.message",
|
||||
"origin": "test.serv",
|
||||
"content": "hewwo?",
|
||||
"auth_events": [],
|
||||
"prev_events": [("four:test.serv", {})],
|
||||
}
|
||||
]
|
||||
}
|
||||
|
||||
self.http_client.post_json = post_json
|
||||
|
||||
def get_json(destination, path, args, headers=None):
|
||||
print(destination, path, args)
|
||||
if path.startswith("/_matrix/federation/v1/state_ids/"):
|
||||
d = self.successResultOf(
|
||||
self.homeserver.datastore.get_state_ids_for_event("one:test.serv")
|
||||
)
|
||||
|
||||
return succeed(
|
||||
{
|
||||
"pdu_ids": [
|
||||
y
|
||||
for x, y in d.items()
|
||||
if x == ("m.room.member", "@us:test")
|
||||
],
|
||||
"auth_chain_ids": d.values(),
|
||||
}
|
||||
)
|
||||
|
||||
self.http_client.get_json = get_json
|
||||
|
||||
# Figure out what the most recent event is
|
||||
most_recent = self.successResultOf(
|
||||
self.homeserver.datastore.get_latest_event_ids_in_room(self.room_id)
|
||||
)[0]
|
||||
|
||||
# Make a good event
|
||||
good_event = FrozenEvent(
|
||||
{
|
||||
"room_id": self.room_id,
|
||||
"sender": "@baduser:test.serv",
|
||||
"event_id": "one:test.serv",
|
||||
"depth": 1000,
|
||||
"origin_server_ts": 1,
|
||||
"type": "m.room.message",
|
||||
"origin": "test.serv",
|
||||
"content": "hewwo?",
|
||||
"auth_events": [],
|
||||
"prev_events": [(most_recent, {})],
|
||||
}
|
||||
)
|
||||
|
||||
d = self.handler.on_receive_pdu(
|
||||
"test.serv", good_event, sent_to_us_directly=True
|
||||
)
|
||||
self.reactor.advance(1)
|
||||
self.assertEqual(self.successResultOf(d), None)
|
||||
|
||||
bad_event = FrozenEvent(
|
||||
{
|
||||
"room_id": self.room_id,
|
||||
"sender": "@baduser:test.serv",
|
||||
"event_id": "two:test.serv",
|
||||
"depth": 1000,
|
||||
"origin_server_ts": 1,
|
||||
"type": "m.room.message",
|
||||
"origin": "test.serv",
|
||||
"content": "hewwo?",
|
||||
"auth_events": [],
|
||||
"prev_events": [("one:test.serv", {}), ("three:test.serv", {})],
|
||||
}
|
||||
)
|
||||
|
||||
d = self.handler.on_receive_pdu(
|
||||
"test.serv", bad_event, sent_to_us_directly=True
|
||||
)
|
||||
self.reactor.advance(1)
|
||||
|
||||
extrem = self.homeserver.datastore.get_latest_event_ids_in_room(self.room_id)
|
||||
self.assertEqual(self.successResultOf(extrem)[0], "two:test.serv")
|
||||
|
||||
state = self.homeserver.get_state_handler().get_current_state_ids(self.room_id)
|
||||
self.reactor.advance(1)
|
||||
self.assertIn(("m.room.member", "@us:test"), self.successResultOf(state).keys())
|
||||
|
|
@ -35,7 +35,7 @@ class ToTwistedHandler(logging.Handler):
|
|||
def emit(self, record):
|
||||
log_entry = self.format(record)
|
||||
log_level = record.levelname.lower().replace('warning', 'warn')
|
||||
self.tx_log.emit(twisted.logger.LogLevel.levelWithName(log_level), log_entry)
|
||||
self.tx_log.emit(twisted.logger.LogLevel.levelWithName(log_level), log_entry.replace("{", r"(").replace("}", r")"))
|
||||
|
||||
|
||||
handler = ToTwistedHandler()
|
||||
|
|
|
|||
Loading…
Reference in New Issue