diff options
Diffstat (limited to '')
| -rw-r--r-- | changelog.d/6531.misc | 1 | ||||
| -rw-r--r-- | synapse/handlers/federation.py | 1 | ||||
| -rw-r--r-- | synapse/state/__init__.py | 32 | ||||
| -rw-r--r-- | synapse/state/v1.py | 34 | ||||
| -rw-r--r-- | synapse/state/v2.py | 100 | ||||
| -rw-r--r-- | tests/state/test_v2.py | 3 |
6 files changed, 128 insertions, 43 deletions
diff --git a/changelog.d/6531.misc b/changelog.d/6531.misc new file mode 100644 index 0000000000..598efb79fc --- /dev/null +++ b/changelog.d/6531.misc @@ -0,0 +1 @@ +Improve sanity-checking when receiving events over federation. diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py index ebeffbb768..fd3f5ced55 100644 --- a/synapse/handlers/federation.py +++ b/synapse/handlers/federation.py @@ -397,6 +397,7 @@ class FederationHandler(BaseHandler): event_map[x.event_id] = x state_map = yield resolve_events_with_store( + room_id, room_version, state_maps, event_map, diff --git a/synapse/state/__init__.py b/synapse/state/__init__.py index 139beef8ed..0e75e94c6f 100644 --- a/synapse/state/__init__.py +++ b/synapse/state/__init__.py @@ -16,7 +16,7 @@ import logging from collections import namedtuple -from typing import Iterable, Optional +from typing import Dict, Iterable, List, Optional, Tuple from six import iteritems, itervalues @@ -416,6 +416,7 @@ class StateHandler(object): with Measure(self.clock, "state._resolve_events"): new_state = yield resolve_events_with_store( + event.room_id, room_version, state_set_ids, event_map=state_map, @@ -461,7 +462,7 @@ class StateResolutionHandler(object): not be called for a single state group Args: - room_id (str): room we are resolving for (used for logging) + room_id (str): room we are resolving for (used for logging and sanity checks) room_version (str): version of the room state_groups_ids (dict[int, dict[(str, str), str]]): map from state group id to the state in that state group @@ -517,6 +518,7 @@ class StateResolutionHandler(object): logger.info("Resolving conflicted state for %r", room_id) with Measure(self.clock, "state._resolve_events"): new_state = yield resolve_events_with_store( + room_id, room_version, list(itervalues(state_groups_ids)), event_map=event_map, @@ -588,36 +590,44 @@ def _make_state_cache_entry(new_state, state_groups_ids): ) -def resolve_events_with_store(room_version, state_sets, event_map, state_res_store): +def resolve_events_with_store( + room_id: str, + room_version: str, + state_sets: List[Dict[Tuple[str, str], str]], + event_map: Optional[Dict[str, EventBase]], + state_res_store: "StateResolutionStore", +): """ Args: - room_version(str): Version of the room + room_id: the room we are working in + + room_version: Version of the room - state_sets(list): List of dicts of (type, state_key) -> event_id, + state_sets: List of dicts of (type, state_key) -> event_id, which are the different state groups to resolve. - event_map(dict[str,FrozenEvent]|None): + event_map: a dict from event_id to event, for any events that we happen to have in flight (eg, those currently being persisted). This will be used as a starting point fof finding the state we need; any missing events will be requested via state_map_factory. - If None, all events will be fetched via state_map_factory. + If None, all events will be fetched via state_res_store. - state_res_store (StateResolutionStore) + state_res_store: a place to fetch events from - Returns + Returns: Deferred[dict[(str, str), str]]: a map from (type, state_key) to event_id. """ v = KNOWN_ROOM_VERSIONS[room_version] if v.state_res == StateResolutionVersions.V1: return v1.resolve_events_with_store( - state_sets, event_map, state_res_store.get_events + room_id, state_sets, event_map, state_res_store.get_events ) else: return v2.resolve_events_with_store( - room_version, state_sets, event_map, state_res_store + room_id, room_version, state_sets, event_map, state_res_store ) diff --git a/synapse/state/v1.py b/synapse/state/v1.py index a2f92d9ff9..b2f9865f39 100644 --- a/synapse/state/v1.py +++ b/synapse/state/v1.py @@ -15,6 +15,7 @@ import hashlib import logging +from typing import Callable, Dict, List, Optional, Tuple from six import iteritems, iterkeys, itervalues @@ -24,6 +25,7 @@ from synapse import event_auth from synapse.api.constants import EventTypes from synapse.api.errors import AuthError from synapse.api.room_versions import RoomVersions +from synapse.events import EventBase logger = logging.getLogger(__name__) @@ -32,13 +34,20 @@ POWER_KEY = (EventTypes.PowerLevels, "") @defer.inlineCallbacks -def resolve_events_with_store(state_sets, event_map, state_map_factory): +def resolve_events_with_store( + room_id: str, + state_sets: List[Dict[Tuple[str, str], str]], + event_map: Optional[Dict[str, EventBase]], + state_map_factory: Callable, +): """ Args: - state_sets(list): List of dicts of (type, state_key) -> event_id, + room_id: the room we are working in + + state_sets: List of dicts of (type, state_key) -> event_id, which are the different state groups to resolve. - event_map(dict[str,FrozenEvent]|None): + event_map: a dict from event_id to event, for any events that we happen to have in flight (eg, those currently being persisted). This will be used as a starting point fof finding the state we need; any missing @@ -46,11 +55,11 @@ def resolve_events_with_store(state_sets, event_map, state_map_factory): If None, all events will be fetched via state_map_factory. - state_map_factory(func): will be called + state_map_factory: will be called with a list of event_ids that are needed, and should return with a Deferred of dict of event_id to event. - Returns + Returns: Deferred[dict[(str, str), str]]: a map from (type, state_key) to event_id. """ @@ -76,6 +85,14 @@ def resolve_events_with_store(state_sets, event_map, state_map_factory): if event_map is not None: state_map.update(event_map) + # everything in the state map should be in the right room + for event in state_map.values(): + if event.room_id != room_id: + raise Exception( + "Attempting to state-resolve for room %s with event %s which is in %s" + % (room_id, event.event_id, event.room_id,) + ) + # get the ids of the auth events which allow us to authenticate the # conflicted state, picking only from the unconflicting state. # @@ -95,6 +112,13 @@ def resolve_events_with_store(state_sets, event_map, state_map_factory): ) state_map_new = yield state_map_factory(new_needed_events) + for event in state_map_new.values(): + if event.room_id != room_id: + raise Exception( + "Attempting to state-resolve for room %s with event %s which is in %s" + % (room_id, event.event_id, event.room_id,) + ) + state_map.update(state_map_new) return _resolve_with_state( diff --git a/synapse/state/v2.py b/synapse/state/v2.py index b327c86f40..cb77ed5b78 100644 --- a/synapse/state/v2.py +++ b/synapse/state/v2.py @@ -16,29 +16,40 @@ import heapq import itertools import logging +from typing import Dict, List, Optional, Tuple from six import iteritems, itervalues from twisted.internet import defer +import synapse.state from synapse import event_auth from synapse.api.constants import EventTypes from synapse.api.errors import AuthError +from synapse.events import EventBase logger = logging.getLogger(__name__) @defer.inlineCallbacks -def resolve_events_with_store(room_version, state_sets, event_map, state_res_store): +def resolve_events_with_store( + room_id: str, + room_version: str, + state_sets: List[Dict[Tuple[str, str], str]], + event_map: Optional[Dict[str, EventBase]], + state_res_store: "synapse.state.StateResolutionStore", +): """Resolves the state using the v2 state resolution algorithm Args: - room_version (str): The room version + room_id: the room we are working in + + room_version: The room version - state_sets(list): List of dicts of (type, state_key) -> event_id, + state_sets: List of dicts of (type, state_key) -> event_id, which are the different state groups to resolve. - event_map(dict[str,FrozenEvent]|None): + event_map: a dict from event_id to event, for any events that we happen to have in flight (eg, those currently being persisted). This will be used as a starting point fof finding the state we need; any missing @@ -46,9 +57,9 @@ def resolve_events_with_store(room_version, state_sets, event_map, state_res_sto If None, all events will be fetched via state_res_store. - state_res_store (StateResolutionStore) + state_res_store: - Returns + Returns: Deferred[dict[(str, str), str]]: a map from (type, state_key) to event_id. """ @@ -84,6 +95,14 @@ def resolve_events_with_store(room_version, state_sets, event_map, state_res_sto ) event_map.update(events) + # everything in the event map should be in the right room + for event in event_map.values(): + if event.room_id != room_id: + raise Exception( + "Attempting to state-resolve for room %s with event %s which is in %s" + % (room_id, event.event_id, event.room_id,) + ) + full_conflicted_set = set(eid for eid in full_conflicted_set if eid in event_map) logger.debug("%d full_conflicted_set entries", len(full_conflicted_set)) @@ -94,13 +113,14 @@ def resolve_events_with_store(room_version, state_sets, event_map, state_res_sto ) sorted_power_events = yield _reverse_topological_power_sort( - power_events, event_map, state_res_store, full_conflicted_set + room_id, power_events, event_map, state_res_store, full_conflicted_set ) logger.debug("sorted %d power events", len(sorted_power_events)) # Now sequentially auth each one resolved_state = yield _iterative_auth_checks( + room_id, room_version, sorted_power_events, unconflicted_state, @@ -121,13 +141,18 @@ def resolve_events_with_store(room_version, state_sets, event_map, state_res_sto pl = resolved_state.get((EventTypes.PowerLevels, ""), None) leftover_events = yield _mainline_sort( - leftover_events, pl, event_map, state_res_store + room_id, leftover_events, pl, event_map, state_res_store ) logger.debug("resolving remaining events") resolved_state = yield _iterative_auth_checks( - room_version, leftover_events, resolved_state, event_map, state_res_store + room_id, + room_version, + leftover_events, + resolved_state, + event_map, + state_res_store, ) logger.debug("resolved") @@ -141,11 +166,12 @@ def resolve_events_with_store(room_version, state_sets, event_map, state_res_sto @defer.inlineCallbacks -def _get_power_level_for_sender(event_id, event_map, state_res_store): +def _get_power_level_for_sender(room_id, event_id, event_map, state_res_store): """Return the power level of the sender of the given event according to their auth events. Args: + room_id (str) event_id (str) event_map (dict[str,FrozenEvent]) state_res_store (StateResolutionStore) @@ -153,11 +179,11 @@ def _get_power_level_for_sender(event_id, event_map, state_res_store): Returns: Deferred[int] """ - event = yield _get_event(event_id, event_map, state_res_store) + event = yield _get_event(room_id, event_id, event_map, state_res_store) pl = None for aid in event.auth_event_ids(): - aev = yield _get_event(aid, event_map, state_res_store) + aev = yield _get_event(room_id, aid, event_map, state_res_store) if (aev.type, aev.state_key) == (EventTypes.PowerLevels, ""): pl = aev break @@ -165,7 +191,7 @@ def _get_power_level_for_sender(event_id, event_map, state_res_store): if pl is None: # Couldn't find power level. Check if they're the creator of the room for aid in event.auth_event_ids(): - aev = yield _get_event(aid, event_map, state_res_store) + aev = yield _get_event(room_id, aid, event_map, state_res_store) if (aev.type, aev.state_key) == (EventTypes.Create, ""): if aev.content.get("creator") == event.sender: return 100 @@ -279,7 +305,7 @@ def _is_power_event(event): @defer.inlineCallbacks def _add_event_and_auth_chain_to_graph( - graph, event_id, event_map, state_res_store, auth_diff + graph, room_id, event_id, event_map, state_res_store, auth_diff ): """Helper function for _reverse_topological_power_sort that add the event and its auth chain (that is in the auth diff) to the graph @@ -287,6 +313,7 @@ def _add_event_and_auth_chain_to_graph( Args: graph (dict[str, set[str]]): A map from event ID to the events auth event IDs + room_id (str): the room we are working in event_id (str): Event to add to the graph event_map (dict[str,FrozenEvent]) state_res_store (StateResolutionStore) @@ -298,7 +325,7 @@ def _add_event_and_auth_chain_to_graph( eid = state.pop() graph.setdefault(eid, set()) - event = yield _get_event(eid, event_map, state_res_store) + event = yield _get_event(room_id, eid, event_map, state_res_store) for aid in event.auth_event_ids(): if aid in auth_diff: if aid not in graph: @@ -308,11 +335,14 @@ def _add_event_and_auth_chain_to_graph( @defer.inlineCallbacks -def _reverse_topological_power_sort(event_ids, event_map, state_res_store, auth_diff): +def _reverse_topological_power_sort( + room_id, event_ids, event_map, state_res_store, auth_diff +): """Returns a list of the event_ids sorted by reverse topological ordering, and then by power level and origin_server_ts Args: + room_id (str): the room we are working in event_ids (list[str]): The events to sort event_map (dict[str,FrozenEvent]) state_res_store (StateResolutionStore) @@ -325,12 +355,14 @@ def _reverse_topological_power_sort(event_ids, event_map, state_res_store, auth_ graph = {} for event_id in event_ids: yield _add_event_and_auth_chain_to_graph( - graph, event_id, event_map, state_res_store, auth_diff + graph, room_id, event_id, event_map, state_res_store, auth_diff ) event_to_pl = {} for event_id in graph: - pl = yield _get_power_level_for_sender(event_id, event_map, state_res_store) + pl = yield _get_power_level_for_sender( + room_id, event_id, event_map, state_res_store + ) event_to_pl[event_id] = pl def _get_power_order(event_id): @@ -348,12 +380,13 @@ def _reverse_topological_power_sort(event_ids, event_map, state_res_store, auth_ @defer.inlineCallbacks def _iterative_auth_checks( - room_version, event_ids, base_state, event_map, state_res_store + room_id, 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_id (str) 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 @@ -370,7 +403,7 @@ def _iterative_auth_checks( auth_events = {} for aid in event.auth_event_ids(): - ev = yield _get_event(aid, event_map, state_res_store) + ev = yield _get_event(room_id, aid, event_map, state_res_store) if ev.rejected_reason is None: auth_events[(ev.type, ev.state_key)] = ev @@ -378,7 +411,7 @@ def _iterative_auth_checks( for key in event_auth.auth_types_for_event(event): if key in resolved_state: ev_id = resolved_state[key] - ev = yield _get_event(ev_id, event_map, state_res_store) + ev = yield _get_event(room_id, ev_id, event_map, state_res_store) if ev.rejected_reason is None: auth_events[key] = event_map[ev_id] @@ -400,11 +433,14 @@ def _iterative_auth_checks( @defer.inlineCallbacks -def _mainline_sort(event_ids, resolved_power_event_id, event_map, state_res_store): +def _mainline_sort( + room_id, event_ids, resolved_power_event_id, event_map, state_res_store +): """Returns a sorted list of event_ids sorted by mainline ordering based on the given event resolved_power_event_id Args: + room_id (str): room we're working in event_ids (list[str]): Events to sort resolved_power_event_id (str): The final resolved power level event ID event_map (dict[str,FrozenEvent]) @@ -417,11 +453,11 @@ def _mainline_sort(event_ids, resolved_power_event_id, event_map, state_res_stor pl = resolved_power_event_id while pl: mainline.append(pl) - pl_ev = yield _get_event(pl, event_map, state_res_store) + pl_ev = yield _get_event(room_id, pl, event_map, state_res_store) auth_events = pl_ev.auth_event_ids() pl = None for aid in auth_events: - ev = yield _get_event(aid, event_map, state_res_store) + ev = yield _get_event(room_id, aid, event_map, state_res_store) if (ev.type, ev.state_key) == (EventTypes.PowerLevels, ""): pl = aid break @@ -457,6 +493,8 @@ def _get_mainline_depth_for_event(event, mainline_map, event_map, state_res_stor Deferred[int] """ + room_id = event.room_id + # We do an iterative search, replacing `event with the power level in its # auth events (if any) while event: @@ -468,7 +506,7 @@ def _get_mainline_depth_for_event(event, mainline_map, event_map, state_res_stor event = None for aid in auth_events: - aev = yield _get_event(aid, event_map, state_res_store) + aev = yield _get_event(room_id, aid, event_map, state_res_store) if (aev.type, aev.state_key) == (EventTypes.PowerLevels, ""): event = aev break @@ -478,11 +516,12 @@ def _get_mainline_depth_for_event(event, mainline_map, event_map, state_res_stor @defer.inlineCallbacks -def _get_event(event_id, event_map, state_res_store): +def _get_event(room_id, event_id, event_map, state_res_store): """Helper function to look up event in event_map, falling back to looking it up in the store Args: + room_id (str) event_id (str) event_map (dict[str,FrozenEvent]) state_res_store (StateResolutionStore) @@ -493,7 +532,14 @@ def _get_event(event_id, event_map, state_res_store): if event_id not in event_map: events = yield state_res_store.get_events([event_id], allow_rejected=True) event_map.update(events) - return event_map[event_id] + event = event_map[event_id] + assert event is not None + if event.room_id != room_id: + raise Exception( + "In state res for room %s, event %s is in %s" + % (room_id, event_id, event.room_id) + ) + return event def lexicographical_topological_sort(graph, key): diff --git a/tests/state/test_v2.py b/tests/state/test_v2.py index 8d3845c870..0f341d3ac3 100644 --- a/tests/state/test_v2.py +++ b/tests/state/test_v2.py @@ -58,6 +58,7 @@ class FakeEvent(object): self.type = type self.state_key = state_key self.content = content + self.room_id = ROOM_ID def to_event(self, auth_events, prev_events): """Given the auth_events and prev_events, convert to a Frozen Event @@ -418,6 +419,7 @@ class StateTestCase(unittest.TestCase): state_before = dict(state_at_event[prev_events[0]]) else: state_d = resolve_events_with_store( + ROOM_ID, RoomVersions.V2.identifier, [state_at_event[n] for n in prev_events], event_map=event_map, @@ -565,6 +567,7 @@ class SimpleParamStateTestCase(unittest.TestCase): # Test that we correctly handle passing `None` as the event_map state_d = resolve_events_with_store( + ROOM_ID, RoomVersions.V2.identifier, [self.state_at_bob, self.state_at_charlie], event_map=None, |