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# -*- coding: utf-8 -*-
# Copyright 2015 OpenMarket Ltd
#
# 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 ._base import BaseHandler
from synapse.api.constants import (
EventTypes, KnownRoomEventKeys, Membership, SearchConstraintTypes
)
from synapse.api.errors import SynapseError
from synapse.events.utils import serialize_event
import logging
logger = logging.getLogger(__name__)
KEYS_TO_ALLOWED_CONSTRAINT_TYPES = {
KnownRoomEventKeys.CONTENT_BODY: [SearchConstraintTypes.FTS],
KnownRoomEventKeys.CONTENT_MSGTYPE: [SearchConstraintTypes.EXACT],
KnownRoomEventKeys.CONTENT_NAME: [
SearchConstraintTypes.FTS,
SearchConstraintTypes.EXACT,
SearchConstraintTypes.SUBSTRING,
],
KnownRoomEventKeys.CONTENT_TOPIC: [SearchConstraintTypes.FTS],
KnownRoomEventKeys.SENDER: [SearchConstraintTypes.EXACT],
KnownRoomEventKeys.ORIGIN_SERVER_TS: [SearchConstraintTypes.RANGE],
KnownRoomEventKeys.ROOM_ID: [SearchConstraintTypes.EXACT],
}
class RoomConstraint(object):
def __init__(self, search_type, keys, value):
self.search_type = search_type
self.keys = keys
self.value = value
@classmethod
def from_dict(cls, d):
search_type = d["type"]
keys = d["keys"]
for key in keys:
if key not in KEYS_TO_ALLOWED_CONSTRAINT_TYPES:
raise SynapseError(400, "Unrecognized key %r", key)
if search_type not in KEYS_TO_ALLOWED_CONSTRAINT_TYPES[key]:
raise SynapseError(
400,
"Disallowed constraint type %r for key %r", search_type, key
)
return cls(search_type, keys, d["value"])
class SearchHandler(BaseHandler):
def __init__(self, hs):
super(SearchHandler, self).__init__(hs)
@defer.inlineCallbacks
def _filter_events_for_client(self, user_id, room_id, events):
event_id_to_state = yield self.store.get_state_for_events(
frozenset(e.event_id for e in events),
types=(
(EventTypes.RoomHistoryVisibility, ""),
(EventTypes.Member, user_id),
)
)
def allowed(event, state):
if event.type == EventTypes.RoomHistoryVisibility:
return True
membership_ev = state.get((EventTypes.Member, user_id), None)
if membership_ev:
membership = membership_ev.membership
else:
membership = Membership.LEAVE
if membership == Membership.JOIN:
return True
history = state.get((EventTypes.RoomHistoryVisibility, ''), None)
if history:
visibility = history.content.get("history_visibility", "shared")
else:
visibility = "shared"
if visibility == "public":
return True
elif visibility == "shared":
return True
elif visibility == "joined":
return membership == Membership.JOIN
elif visibility == "invited":
return membership == Membership.INVITE
return True
defer.returnValue([
event
for event in events
if allowed(event, event_id_to_state[event.event_id])
])
@defer.inlineCallbacks
def search(self, user, content):
constraint_dicts = content["search_categories"]["room_events"]["constraints"]
constraints = [RoomConstraint.from_dict(c)for c in constraint_dicts]
fts = False
for c in constraints:
if c.search_type == SearchConstraintTypes.FTS:
if fts:
raise SynapseError(400, "Only one constraint can be FTS")
fts = True
rooms = yield self.store.get_rooms_for_user(
user.to_string(),
)
# For some reason the list of events contains duplicates
# TODO(paul): work out why because I really don't think it should
room_ids = set(r.room_id for r in rooms)
res = yield self.store.search_msgs(room_ids, constraints)
time_now = self.clock.time_msec()
results = {
r["result"].event_id: {
"rank": r["rank"],
"result": serialize_event(r["result"], time_now)
}
for r in res
}
logger.info("returning: %r", results)
defer.returnValue({
"search_categories": {
"room_events": {
"results": results,
"count": len(results)
}
}
})
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