move filter_events_for_client out of base handler
This commit is contained in:
Mark Haines
parent
260b498ee5
commit
7e23476814
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@ -19,7 +19,6 @@ from synapse.api.errors import LimitExceededError
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from synapse.api.constants import Membership, EventTypes
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from synapse.types import UserID, Requester
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from synapse.util.logcontext import preserve_fn
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import logging
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@ -27,23 +26,6 @@ import logging
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logger = logging.getLogger(__name__)
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VISIBILITY_PRIORITY = (
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"world_readable",
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"shared",
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"invited",
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"joined",
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)
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MEMBERSHIP_PRIORITY = (
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Membership.JOIN,
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Membership.INVITE,
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Membership.KNOCK,
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Membership.LEAVE,
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Membership.BAN,
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)
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class BaseHandler(object):
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"""
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Common base class for the event handlers.
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@ -67,172 +49,6 @@ class BaseHandler(object):
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self.event_builder_factory = hs.get_event_builder_factory()
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@defer.inlineCallbacks
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def filter_events_for_clients(self, user_tuples, events, event_id_to_state):
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""" Returns dict of user_id -> list of events that user is allowed to
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see.
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Args:
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user_tuples (str, bool): (user id, is_peeking) for each user to be
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checked. is_peeking should be true if:
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* the user is not currently a member of the room, and:
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* the user has not been a member of the room since the
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given events
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events ([synapse.events.EventBase]): list of events to filter
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"""
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forgotten = yield defer.gatherResults([
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preserve_fn(self.store.who_forgot_in_room)(
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room_id,
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)
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for room_id in frozenset(e.room_id for e in events)
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], consumeErrors=True)
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# Set of membership event_ids that have been forgotten
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event_id_forgotten = frozenset(
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row["event_id"] for rows in forgotten for row in rows
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)
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ignore_dict_content = yield self.store.get_global_account_data_by_type_for_users(
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"m.ignored_user_list", user_ids=[user_id for user_id, _ in user_tuples]
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)
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# FIXME: This will explode if people upload something incorrect.
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ignore_dict = {
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user_id: frozenset(
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content.get("ignored_users", {}).keys() if content else []
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)
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for user_id, content in ignore_dict_content.items()
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}
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def allowed(event, user_id, is_peeking, ignore_list):
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"""
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Args:
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event (synapse.events.EventBase): event to check
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user_id (str)
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is_peeking (bool)
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ignore_list (list): list of users to ignore
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"""
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if not event.is_state() and event.sender in ignore_list:
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return False
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state = event_id_to_state[event.event_id]
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# get the room_visibility at the time of the event.
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visibility_event = state.get((EventTypes.RoomHistoryVisibility, ""), None)
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if visibility_event:
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visibility = visibility_event.content.get("history_visibility", "shared")
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else:
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visibility = "shared"
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if visibility not in VISIBILITY_PRIORITY:
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visibility = "shared"
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# if it was world_readable, it's easy: everyone can read it
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if visibility == "world_readable":
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return True
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# Always allow history visibility events on boundaries. This is done
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# by setting the effective visibility to the least restrictive
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# of the old vs new.
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if event.type == EventTypes.RoomHistoryVisibility:
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prev_content = event.unsigned.get("prev_content", {})
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prev_visibility = prev_content.get("history_visibility", None)
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if prev_visibility not in VISIBILITY_PRIORITY:
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prev_visibility = "shared"
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new_priority = VISIBILITY_PRIORITY.index(visibility)
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old_priority = VISIBILITY_PRIORITY.index(prev_visibility)
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if old_priority < new_priority:
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visibility = prev_visibility
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# likewise, if the event is the user's own membership event, use
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# the 'most joined' membership
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membership = None
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if event.type == EventTypes.Member and event.state_key == user_id:
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membership = event.content.get("membership", None)
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if membership not in MEMBERSHIP_PRIORITY:
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membership = "leave"
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prev_content = event.unsigned.get("prev_content", {})
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prev_membership = prev_content.get("membership", None)
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if prev_membership not in MEMBERSHIP_PRIORITY:
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prev_membership = "leave"
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new_priority = MEMBERSHIP_PRIORITY.index(membership)
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old_priority = MEMBERSHIP_PRIORITY.index(prev_membership)
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if old_priority < new_priority:
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membership = prev_membership
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# otherwise, get the user's membership at the time of the event.
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if membership is None:
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membership_event = state.get((EventTypes.Member, user_id), None)
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if membership_event:
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if membership_event.event_id not in event_id_forgotten:
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membership = membership_event.membership
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# if the user was a member of the room at the time of the event,
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# they can see it.
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if membership == Membership.JOIN:
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return True
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if visibility == "joined":
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# we weren't a member at the time of the event, so we can't
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# see this event.
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return False
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elif visibility == "invited":
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# user can also see the event if they were *invited* at the time
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# of the event.
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return membership == Membership.INVITE
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else:
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# visibility is shared: user can also see the event if they have
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# become a member since the event
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#
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# XXX: if the user has subsequently joined and then left again,
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# ideally we would share history up to the point they left. But
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# we don't know when they left.
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return not is_peeking
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defer.returnValue({
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user_id: [
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event
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for event in events
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if allowed(event, user_id, is_peeking, ignore_dict.get(user_id, []))
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]
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for user_id, is_peeking in user_tuples
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})
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@defer.inlineCallbacks
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def filter_events_for_client(self, user_id, events, is_peeking=False):
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"""
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Check which events a user is allowed to see
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Args:
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user_id(str): user id to be checked
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events([synapse.events.EventBase]): list of events to be checked
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is_peeking(bool): should be True if:
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* the user is not currently a member of the room, and:
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* the user has not been a member of the room since the given
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events
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Returns:
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[synapse.events.EventBase]
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"""
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types = (
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(EventTypes.RoomHistoryVisibility, ""),
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(EventTypes.Member, user_id),
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)
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event_id_to_state = yield self.store.get_state_for_events(
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frozenset(e.event_id for e in events),
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types=types
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)
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res = yield self.filter_events_for_clients(
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[(user_id, is_peeking)], events, event_id_to_state
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)
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defer.returnValue(res.get(user_id, []))
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def ratelimit(self, requester):
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time_now = self.clock.time()
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allowed, time_allowed = self.ratelimiter.send_message(
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@ -29,6 +29,7 @@ from synapse.util import unwrapFirstError
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from synapse.util.async import concurrently_execute
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from synapse.util.caches.snapshot_cache import SnapshotCache
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from synapse.util.logcontext import PreserveLoggingContext, preserve_fn
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from synapse.visibility import filter_events_for_client
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from ._base import BaseHandler
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@ -128,7 +129,8 @@ class MessageHandler(BaseHandler):
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"end": next_token.to_string(),
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})
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events = yield self.filter_events_for_client(
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events = yield filter_events_for_client(
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self.store,
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user_id,
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events,
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is_peeking=(member_event_id is None),
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@ -488,8 +490,8 @@ class MessageHandler(BaseHandler):
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]
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).addErrback(unwrapFirstError)
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messages = yield self.filter_events_for_client(
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user_id, messages
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messages = yield filter_events_for_client(
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self.store, user_id, messages
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)
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start_token = now_token.copy_and_replace("room_key", token[0])
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@ -624,8 +626,8 @@ class MessageHandler(BaseHandler):
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end_token=stream_token
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)
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messages = yield self.filter_events_for_client(
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user_id, messages, is_peeking=is_peeking
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messages = yield filter_events_for_client(
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self.store, user_id, messages, is_peeking=is_peeking
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)
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start_token = StreamToken.START.copy_and_replace("room_key", token[0])
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@ -705,8 +707,8 @@ class MessageHandler(BaseHandler):
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consumeErrors=True,
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).addErrback(unwrapFirstError)
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messages = yield self.filter_events_for_client(
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user_id, messages, is_peeking=is_peeking,
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messages = yield filter_events_for_client(
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self.store, user_id, messages, is_peeking=is_peeking,
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)
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start_token = now_token.copy_and_replace("room_key", token[0])
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@ -882,7 +884,7 @@ class MessageHandler(BaseHandler):
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action_generator = ActionGenerator(self.hs)
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yield action_generator.handle_push_actions_for_event(
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event, context, self
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event, context
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)
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(event_stream_id, max_stream_id) = yield self.store.persist_event(
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@ -26,6 +26,7 @@ from synapse.api.errors import AuthError, StoreError, SynapseError
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from synapse.util import stringutils
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from synapse.util.async import concurrently_execute
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from synapse.util.caches.response_cache import ResponseCache
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from synapse.visibility import filter_events_for_client
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from collections import OrderedDict
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@ -449,10 +450,12 @@ class RoomContextHandler(BaseHandler):
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now_token = yield self.hs.get_event_sources().get_current_token()
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def filter_evts(events):
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return self.filter_events_for_client(
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return filter_events_for_client(
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self.store,
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user.to_string(),
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events,
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is_peeking=is_guest)
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is_peeking=is_guest
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)
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event = yield self.store.get_event(event_id, get_prev_content=True,
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allow_none=True)
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@ -21,6 +21,7 @@ from synapse.api.constants import Membership, EventTypes
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from synapse.api.filtering import Filter
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from synapse.api.errors import SynapseError
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from synapse.events.utils import serialize_event
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from synapse.visibility import filter_events_for_client
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from unpaddedbase64 import decode_base64, encode_base64
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@ -172,8 +173,8 @@ class SearchHandler(BaseHandler):
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filtered_events = search_filter.filter([r["event"] for r in results])
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events = yield self.filter_events_for_client(
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user.to_string(), filtered_events
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events = yield filter_events_for_client(
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self.store, user.to_string(), filtered_events
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)
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events.sort(key=lambda e: -rank_map[e.event_id])
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@ -223,8 +224,8 @@ class SearchHandler(BaseHandler):
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r["event"] for r in results
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])
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events = yield self.filter_events_for_client(
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user.to_string(), filtered_events
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events = yield filter_events_for_client(
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self.store, user.to_string(), filtered_events
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)
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room_events.extend(events)
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@ -281,12 +282,12 @@ class SearchHandler(BaseHandler):
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event.room_id, event.event_id, before_limit, after_limit
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)
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res["events_before"] = yield self.filter_events_for_client(
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user.to_string(), res["events_before"]
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res["events_before"] = yield filter_events_for_client(
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self.store, user.to_string(), res["events_before"]
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)
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res["events_after"] = yield self.filter_events_for_client(
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user.to_string(), res["events_after"]
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res["events_after"] = yield filter_events_for_client(
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self.store, user.to_string(), res["events_after"]
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)
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res["start"] = now_token.copy_and_replace(
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@ -22,6 +22,7 @@ from synapse.util.logcontext import LoggingContext
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from synapse.util.metrics import Measure
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from synapse.util.caches.response_cache import ResponseCache
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from synapse.push.clientformat import format_push_rules_for_user
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from synapse.visibility import filter_events_for_client
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from twisted.internet import defer
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@ -697,7 +698,8 @@ class SyncHandler(BaseHandler):
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if recents is not None:
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recents = sync_config.filter_collection.filter_room_timeline(recents)
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recents = yield self.filter_events_for_client(
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recents = yield filter_events_for_client(
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self.store,
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sync_config.user.to_string(),
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recents,
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)
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@ -718,7 +720,8 @@ class SyncHandler(BaseHandler):
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loaded_recents = sync_config.filter_collection.filter_room_timeline(
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events
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)
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loaded_recents = yield self.filter_events_for_client(
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loaded_recents = yield filter_events_for_client(
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self.store,
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sync_config.user.to_string(),
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loaded_recents,
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)
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@ -21,6 +21,7 @@ from synapse.util.logutils import log_function
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from synapse.util.async import ObservableDeferred
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from synapse.util.logcontext import PreserveLoggingContext
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from synapse.types import StreamToken
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from synapse.visibility import filter_events_for_client
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import synapse.metrics
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from collections import namedtuple
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@ -398,8 +399,8 @@ class Notifier(object):
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)
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if name == "room":
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room_member_handler = self.hs.get_handlers().room_member_handler
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new_events = yield room_member_handler.filter_events_for_client(
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new_events = yield filter_events_for_client(
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self.store,
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user.to_string(),
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new_events,
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is_peeking=is_peeking,
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|
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@ -37,14 +37,14 @@ class ActionGenerator:
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# tag (ie. we just need all the users).
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@defer.inlineCallbacks
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def handle_push_actions_for_event(self, event, context, handler):
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def handle_push_actions_for_event(self, event, context):
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with Measure(self.clock, "handle_push_actions_for_event"):
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bulk_evaluator = yield evaluator_for_event(
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event, self.hs, self.store
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)
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actions_by_user = yield bulk_evaluator.action_for_event_by_user(
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event, handler, context.current_state
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event, context.current_state
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)
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context.push_actions = [
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@ -22,6 +22,7 @@ from .baserules import list_with_base_rules
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from .push_rule_evaluator import PushRuleEvaluatorForEvent
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from synapse.api.constants import EventTypes
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from synapse.visibility import filter_events_for_clients
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logger = logging.getLogger(__name__)
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@ -126,7 +127,7 @@ class BulkPushRuleEvaluator:
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self.store = store
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@defer.inlineCallbacks
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def action_for_event_by_user(self, event, handler, current_state):
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def action_for_event_by_user(self, event, current_state):
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actions_by_user = {}
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# None of these users can be peeking since this list of users comes
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@ -136,8 +137,8 @@ class BulkPushRuleEvaluator:
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(u, False) for u in self.rules_by_user.keys()
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]
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filtered_by_user = yield handler.filter_events_for_clients(
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user_tuples, [event], {event.event_id: current_state}
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filtered_by_user = yield filter_events_for_clients(
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self.store, user_tuples, [event], {event.event_id: current_state}
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)
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room_members = yield self.store.get_users_in_room(self.room_id)
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@ -28,6 +28,7 @@ from synapse.util.presentable_names import (
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from synapse.types import UserID
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from synapse.api.errors import StoreError
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from synapse.api.constants import EventTypes
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from synapse.visibility import filter_events_for_client
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import jinja2
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import bleach
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@ -227,9 +228,8 @@ class Mailer(object):
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"messages": [],
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}
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handler = self.hs.get_handlers().message_handler
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the_events = yield handler.filter_events_for_client(
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user_id, results["events_before"]
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the_events = yield filter_events_for_client(
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self.store, user_id, results["events_before"]
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)
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the_events.append(notif_event)
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@ -0,0 +1,210 @@
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# -*- coding: utf-8 -*-
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# Copyright 2014 - 2016 OpenMarket Ltd
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#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||
# you may not use this file except in compliance with the License.
|
||||
# You may obtain a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
|
||||
from twisted.internet import defer
|
||||
|
||||
from synapse.api.constants import Membership, EventTypes
|
||||
|
||||
from synapse.util.logcontext import preserve_fn
|
||||
|
||||
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,
|
||||
)
|
||||
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def filter_events_for_clients(store, 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(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 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(store, 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 store.get_state_for_events(
|
||||
frozenset(e.event_id for e in events),
|
||||
types=types
|
||||
)
|
||||
res = yield filter_events_for_clients(
|
||||
store, [(user_id, is_peeking)], events, event_id_to_state
|
||||
)
|
||||
defer.returnValue(res.get(user_id, []))
|
||||
Loading…
Reference in New Issue