diff --git a/synapse/handlers/_base.py b/synapse/handlers/_base.py
index ac716a8118..c904c6c500 100644
--- a/synapse/handlers/_base.py
+++ b/synapse/handlers/_base.py
@@ -19,7 +19,6 @@ from synapse.api.errors import LimitExceededError
from synapse.api.constants import Membership, EventTypes
from synapse.types import UserID, Requester
-from synapse.util.logcontext import preserve_fn
import logging
@@ -27,23 +26,6 @@ import logging
logger = logging.getLogger(__name__)
-VISIBILITY_PRIORITY = (
- "world_readable",
- "shared",
- "invited",
- "joined",
-)
-
-
-MEMBERSHIP_PRIORITY = (
- Membership.JOIN,
- Membership.INVITE,
- Membership.KNOCK,
- Membership.LEAVE,
- Membership.BAN,
-)
-
-
class BaseHandler(object):
"""
Common base class for the event handlers.
@@ -67,172 +49,6 @@ class BaseHandler(object):
self.event_builder_factory = hs.get_event_builder_factory()
- @defer.inlineCallbacks
- def filter_events_for_clients(self, user_tuples, events, event_id_to_state):
- """ Returns dict of user_id -> list of events that user is allowed to
- see.
-
- Args:
- user_tuples (str, bool): (user id, is_peeking) for each user to be
- checked. is_peeking should be true if:
- * the user is not currently a member of the room, and:
- * the user has not been a member of the room since the
- given events
- events ([synapse.events.EventBase]): list of events to filter
- """
- forgotten = yield defer.gatherResults([
- preserve_fn(self.store.who_forgot_in_room)(
- room_id,
- )
- for room_id in frozenset(e.room_id for e in events)
- ], consumeErrors=True)
-
- # Set of membership event_ids that have been forgotten
- event_id_forgotten = frozenset(
- row["event_id"] for rows in forgotten for row in rows
- )
-
- ignore_dict_content = yield self.store.get_global_account_data_by_type_for_users(
- "m.ignored_user_list", user_ids=[user_id for user_id, _ in user_tuples]
- )
-
- # FIXME: This will explode if people upload something incorrect.
- ignore_dict = {
- user_id: frozenset(
- content.get("ignored_users", {}).keys() if content else []
- )
- for user_id, content in ignore_dict_content.items()
- }
-
- def allowed(event, user_id, is_peeking, ignore_list):
- """
- Args:
- event (synapse.events.EventBase): event to check
- user_id (str)
- is_peeking (bool)
- ignore_list (list): list of users to ignore
- """
- if not event.is_state() and event.sender in ignore_list:
- return False
-
- state = event_id_to_state[event.event_id]
-
- # get the room_visibility at the time of the event.
- visibility_event = state.get((EventTypes.RoomHistoryVisibility, ""), None)
- if visibility_event:
- visibility = visibility_event.content.get("history_visibility", "shared")
- else:
- visibility = "shared"
-
- if visibility not in VISIBILITY_PRIORITY:
- visibility = "shared"
-
- # if it was world_readable, it's easy: everyone can read it
- if visibility == "world_readable":
- return True
-
- # Always allow history visibility events on boundaries. This is done
- # by setting the effective visibility to the least restrictive
- # of the old vs new.
- if event.type == EventTypes.RoomHistoryVisibility:
- prev_content = event.unsigned.get("prev_content", {})
- prev_visibility = prev_content.get("history_visibility", None)
-
- if prev_visibility not in VISIBILITY_PRIORITY:
- prev_visibility = "shared"
-
- new_priority = VISIBILITY_PRIORITY.index(visibility)
- old_priority = VISIBILITY_PRIORITY.index(prev_visibility)
- if old_priority < new_priority:
- visibility = prev_visibility
-
- # likewise, if the event is the user's own membership event, use
- # the 'most joined' membership
- membership = None
- if event.type == EventTypes.Member and event.state_key == user_id:
- membership = event.content.get("membership", None)
- if membership not in MEMBERSHIP_PRIORITY:
- membership = "leave"
-
- prev_content = event.unsigned.get("prev_content", {})
- prev_membership = prev_content.get("membership", None)
- if prev_membership not in MEMBERSHIP_PRIORITY:
- prev_membership = "leave"
-
- new_priority = MEMBERSHIP_PRIORITY.index(membership)
- old_priority = MEMBERSHIP_PRIORITY.index(prev_membership)
- if old_priority < new_priority:
- membership = prev_membership
-
- # otherwise, get the user's membership at the time of the event.
- if membership is None:
- membership_event = state.get((EventTypes.Member, user_id), None)
- if membership_event:
- if membership_event.event_id not in event_id_forgotten:
- membership = membership_event.membership
-
- # if the user was a member of the room at the time of the event,
- # they can see it.
- if membership == Membership.JOIN:
- return True
-
- if visibility == "joined":
- # we weren't a member at the time of the event, so we can't
- # see this event.
- return False
-
- elif visibility == "invited":
- # user can also see the event if they were *invited* at the time
- # of the event.
- return membership == Membership.INVITE
-
- else:
- # visibility is shared: user can also see the event if they have
- # become a member since the event
- #
- # XXX: if the user has subsequently joined and then left again,
- # ideally we would share history up to the point they left. But
- # we don't know when they left.
- return not is_peeking
-
- defer.returnValue({
- user_id: [
- event
- for event in events
- if allowed(event, user_id, is_peeking, ignore_dict.get(user_id, []))
- ]
- for user_id, is_peeking in user_tuples
- })
-
- @defer.inlineCallbacks
- def filter_events_for_client(self, user_id, events, is_peeking=False):
- """
- Check which events a user is allowed to see
-
- Args:
- user_id(str): user id to be checked
- events([synapse.events.EventBase]): list of events to be checked
- is_peeking(bool): should be True if:
- * the user is not currently a member of the room, and:
- * the user has not been a member of the room since the given
- events
-
- Returns:
- [synapse.events.EventBase]
- """
- types = (
- (EventTypes.RoomHistoryVisibility, ""),
- (EventTypes.Member, user_id),
- )
- event_id_to_state = yield self.store.get_state_for_events(
- frozenset(e.event_id for e in events),
- types=types
- )
- res = yield self.filter_events_for_clients(
- [(user_id, is_peeking)], events, event_id_to_state
- )
- defer.returnValue(res.get(user_id, []))
-
def ratelimit(self, requester):
time_now = self.clock.time()
allowed, time_allowed = self.ratelimiter.send_message(
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