diff --git a/synapse/handlers/search.py b/synapse/handlers/search.py
new file mode 100644
index 0000000000..d5c395061c
--- /dev/null
+++ b/synapse/handlers/search.py
@@ -0,0 +1,164 @@
+# -*- 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, 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_where_membership_is(
+ user.to_string(), membership_list=[Membership.JOIN, Membership.LEAVE],
+ )
+ room_ids = set(r.room_id for r in rooms)
+
+ rank_map, event_map = yield self.store.search_msgs(room_ids, constraints)
+
+ allowed_events = yield self._filter_events_for_client(
+ user.to_string(), event_map.values()
+ )
+
+ time_now = self.clock.time_msec()
+
+ results = {
+ e.event_id: {
+ "rank": rank_map[e.event_id],
+ "result": serialize_event(e, time_now)
+ }
+ for e in allowed_events
+ }
+
+ logger.info("returning: %r", results)
+
+ defer.returnValue({
+ "search_categories": {
+ "room_events": {
+ "results": results,
+ "count": len(results)
+ }
+ }
+ })
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