summary refs log tree commit diff
path: root/synapse/rest/client/v1/room.py
blob: 3040f94867f54bc3b7b96d570fc435e8095aa6ef (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
# -*- coding: utf-8 -*-
# Copyright 2014-2016 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.

""" This module contains REST servlets to do with rooms: /rooms/<paths> """
from twisted.internet import defer

from .base import ClientV1RestServlet, client_path_patterns
from synapse.api.errors import SynapseError, Codes, AuthError
from synapse.streams.config import PaginationConfig
from synapse.api.constants import EventTypes, Membership
from synapse.api.filtering import Filter
from synapse.types import UserID, RoomID, RoomAlias
from synapse.events.utils import serialize_event, format_event_for_client_v2
from synapse.http.servlet import (
    parse_json_object_from_request, parse_string, parse_integer
)

import logging
import urllib
import ujson as json

logger = logging.getLogger(__name__)


class RoomCreateRestServlet(ClientV1RestServlet):
    # No PATTERN; we have custom dispatch rules here

    def __init__(self, hs):
        super(RoomCreateRestServlet, self).__init__(hs)
        self.handlers = hs.get_handlers()

    def register(self, http_server):
        PATTERNS = "/createRoom"
        register_txn_path(self, PATTERNS, http_server)
        # define CORS for all of /rooms in RoomCreateRestServlet for simplicity
        http_server.register_paths("OPTIONS",
                                   client_path_patterns("/rooms(?:/.*)?$"),
                                   self.on_OPTIONS)
        # define CORS for /createRoom[/txnid]
        http_server.register_paths("OPTIONS",
                                   client_path_patterns("/createRoom(?:/.*)?$"),
                                   self.on_OPTIONS)

    def on_PUT(self, request, txn_id):
        return self.txns.fetch_or_execute_request(
            request, self.on_POST, request
        )

    @defer.inlineCallbacks
    def on_POST(self, request):
        requester = yield self.auth.get_user_by_req(request)

        handler = self.handlers.room_creation_handler
        info = yield handler.create_room(
            requester, self.get_room_config(request)
        )

        defer.returnValue((200, info))

    def get_room_config(self, request):
        user_supplied_config = parse_json_object_from_request(request)
        return user_supplied_config

    def on_OPTIONS(self, request):
        return (200, {})


# TODO: Needs unit testing for generic events
class RoomStateEventRestServlet(ClientV1RestServlet):
    def __init__(self, hs):
        super(RoomStateEventRestServlet, self).__init__(hs)
        self.handlers = hs.get_handlers()

    def register(self, http_server):
        # /room/$roomid/state/$eventtype
        no_state_key = "/rooms/(?P<room_id>[^/]*)/state/(?P<event_type>[^/]*)$"

        # /room/$roomid/state/$eventtype/$statekey
        state_key = ("/rooms/(?P<room_id>[^/]*)/state/"
                     "(?P<event_type>[^/]*)/(?P<state_key>[^/]*)$")

        http_server.register_paths("GET",
                                   client_path_patterns(state_key),
                                   self.on_GET)
        http_server.register_paths("PUT",
                                   client_path_patterns(state_key),
                                   self.on_PUT)
        http_server.register_paths("GET",
                                   client_path_patterns(no_state_key),
                                   self.on_GET_no_state_key)
        http_server.register_paths("PUT",
                                   client_path_patterns(no_state_key),
                                   self.on_PUT_no_state_key)

    def on_GET_no_state_key(self, request, room_id, event_type):
        return self.on_GET(request, room_id, event_type, "")

    def on_PUT_no_state_key(self, request, room_id, event_type):
        return self.on_PUT(request, room_id, event_type, "")

    @defer.inlineCallbacks
    def on_GET(self, request, room_id, event_type, state_key):
        requester = yield self.auth.get_user_by_req(request, allow_guest=True)
        format = parse_string(request, "format", default="content",
                              allowed_values=["content", "event"])

        msg_handler = self.handlers.message_handler
        data = yield msg_handler.get_room_data(
            user_id=requester.user.to_string(),
            room_id=room_id,
            event_type=event_type,
            state_key=state_key,
            is_guest=requester.is_guest,
        )

        if not data:
            raise SynapseError(
                404, "Event not found.", errcode=Codes.NOT_FOUND
            )

        if format == "event":
            event = format_event_for_client_v2(data.get_dict())
            defer.returnValue((200, event))
        elif format == "content":
            defer.returnValue((200, data.get_dict()["content"]))

    @defer.inlineCallbacks
    def on_PUT(self, request, room_id, event_type, state_key, txn_id=None):
        requester = yield self.auth.get_user_by_req(request)

        content = parse_json_object_from_request(request)

        event_dict = {
            "type": event_type,
            "content": content,
            "room_id": room_id,
            "sender": requester.user.to_string(),
        }

        if state_key is not None:
            event_dict["state_key"] = state_key

        msg_handler = self.handlers.message_handler
        event, context = yield msg_handler.create_event(
            event_dict,
            token_id=requester.access_token_id,
            txn_id=txn_id,
        )

        if event_type == EventTypes.Member:
            yield self.handlers.room_member_handler.send_membership_event(
                requester,
                event,
                context,
            )
        else:
            yield msg_handler.send_nonmember_event(requester, event, context)

        defer.returnValue((200, {"event_id": event.event_id}))


# TODO: Needs unit testing for generic events + feedback
class RoomSendEventRestServlet(ClientV1RestServlet):

    def __init__(self, hs):
        super(RoomSendEventRestServlet, self).__init__(hs)
        self.handlers = hs.get_handlers()

    def register(self, http_server):
        # /rooms/$roomid/send/$event_type[/$txn_id]
        PATTERNS = ("/rooms/(?P<room_id>[^/]*)/send/(?P<event_type>[^/]*)")
        register_txn_path(self, PATTERNS, http_server, with_get=True)

    @defer.inlineCallbacks
    def on_POST(self, request, room_id, event_type, txn_id=None):
        requester = yield self.auth.get_user_by_req(request, allow_guest=True)
        content = parse_json_object_from_request(request)

        msg_handler = self.handlers.message_handler
        event = yield msg_handler.create_and_send_nonmember_event(
            requester,
            {
                "type": event_type,
                "content": content,
                "room_id": room_id,
                "sender": requester.user.to_string(),
            },
            txn_id=txn_id,
        )

        defer.returnValue((200, {"event_id": event.event_id}))

    def on_GET(self, request, room_id, event_type, txn_id):
        return (200, "Not implemented")

    def on_PUT(self, request, room_id, event_type, txn_id):
        return self.txns.fetch_or_execute_request(
            request, self.on_POST, request, room_id, event_type, txn_id
        )


# TODO: Needs unit testing for room ID + alias joins
class JoinRoomAliasServlet(ClientV1RestServlet):
    def __init__(self, hs):
        super(JoinRoomAliasServlet, self).__init__(hs)
        self.handlers = hs.get_handlers()

    def register(self, http_server):
        # /join/$room_identifier[/$txn_id]
        PATTERNS = ("/join/(?P<room_identifier>[^/]*)")
        register_txn_path(self, PATTERNS, http_server)

    @defer.inlineCallbacks
    def on_POST(self, request, room_identifier, txn_id=None):
        requester = yield self.auth.get_user_by_req(
            request,
            allow_guest=True,
        )

        try:
            content = parse_json_object_from_request(request)
        except:
            # Turns out we used to ignore the body entirely, and some clients
            # cheekily send invalid bodies.
            content = {}

        if RoomID.is_valid(room_identifier):
            room_id = room_identifier
            try:
                remote_room_hosts = request.args["server_name"]
            except:
                remote_room_hosts = None
        elif RoomAlias.is_valid(room_identifier):
            handler = self.handlers.room_member_handler
            room_alias = RoomAlias.from_string(room_identifier)
            room_id, remote_room_hosts = yield handler.lookup_room_alias(room_alias)
            room_id = room_id.to_string()
        else:
            raise SynapseError(400, "%s was not legal room ID or room alias" % (
                room_identifier,
            ))

        yield self.handlers.room_member_handler.update_membership(
            requester=requester,
            target=requester.user,
            room_id=room_id,
            action="join",
            txn_id=txn_id,
            remote_room_hosts=remote_room_hosts,
            content=content,
            third_party_signed=content.get("third_party_signed", None),
        )

        defer.returnValue((200, {"room_id": room_id}))

    def on_PUT(self, request, room_identifier, txn_id):
        return self.txns.fetch_or_execute_request(
            request, self.on_POST, request, room_identifier, txn_id
        )


# TODO: Needs unit testing
class PublicRoomListRestServlet(ClientV1RestServlet):
    PATTERNS = client_path_patterns("/publicRooms$")

    @defer.inlineCallbacks
    def on_GET(self, request):
        server = parse_string(request, "server", default=None)

        try:
            yield self.auth.get_user_by_req(request, allow_guest=True)
        except AuthError as e:
            # We allow people to not be authed if they're just looking at our
            # room list, but require auth when we proxy the request.
            # In both cases we call the auth function, as that has the side
            # effect of logging who issued this request if an access token was
            # provided.
            if server:
                raise e
            else:
                pass

        limit = parse_integer(request, "limit", 0)
        since_token = parse_string(request, "since", None)

        handler = self.hs.get_room_list_handler()
        if server:
            data = yield handler.get_remote_public_room_list(
                server,
                limit=limit,
                since_token=since_token,
            )
        else:
            data = yield handler.get_local_public_room_list(
                limit=limit,
                since_token=since_token,
            )

        defer.returnValue((200, data))

    @defer.inlineCallbacks
    def on_POST(self, request):
        yield self.auth.get_user_by_req(request, allow_guest=True)

        server = parse_string(request, "server", default=None)
        content = parse_json_object_from_request(request)

        limit = int(content.get("limit", 100))
        since_token = content.get("since", None)
        search_filter = content.get("filter", None)

        handler = self.hs.get_room_list_handler()
        if server:
            data = yield handler.get_remote_public_room_list(
                server,
                limit=limit,
                since_token=since_token,
                search_filter=search_filter,
            )
        else:
            data = yield handler.get_local_public_room_list(
                limit=limit,
                since_token=since_token,
                search_filter=search_filter,
            )

        defer.returnValue((200, data))


# TODO: Needs unit testing
class RoomMemberListRestServlet(ClientV1RestServlet):
    PATTERNS = client_path_patterns("/rooms/(?P<room_id>[^/]*)/members$")

    def __init__(self, hs):
        super(RoomMemberListRestServlet, self).__init__(hs)
        self.handlers = hs.get_handlers()

    @defer.inlineCallbacks
    def on_GET(self, request, room_id):
        # TODO support Pagination stream API (limit/tokens)
        requester = yield self.auth.get_user_by_req(request)
        handler = self.handlers.message_handler
        events = yield handler.get_state_events(
            room_id=room_id,
            user_id=requester.user.to_string(),
        )

        chunk = []

        for event in events:
            if event["type"] != EventTypes.Member:
                continue
            chunk.append(event)

        defer.returnValue((200, {
            "chunk": chunk
        }))


# TODO: Needs better unit testing
class RoomMessageListRestServlet(ClientV1RestServlet):
    PATTERNS = client_path_patterns("/rooms/(?P<room_id>[^/]*)/messages$")

    def __init__(self, hs):
        super(RoomMessageListRestServlet, self).__init__(hs)
        self.handlers = hs.get_handlers()

    @defer.inlineCallbacks
    def on_GET(self, request, room_id):
        requester = yield self.auth.get_user_by_req(request, allow_guest=True)
        pagination_config = PaginationConfig.from_request(
            request, default_limit=10,
        )
        as_client_event = "raw" not in request.args
        filter_bytes = request.args.get("filter", None)
        if filter_bytes:
            filter_json = urllib.unquote(filter_bytes[-1]).decode("UTF-8")
            event_filter = Filter(json.loads(filter_json))
        else:
            event_filter = None
        handler = self.handlers.message_handler
        msgs = yield handler.get_messages(
            room_id=room_id,
            requester=requester,
            pagin_config=pagination_config,
            as_client_event=as_client_event,
            event_filter=event_filter,
        )

        defer.returnValue((200, msgs))


# TODO: Needs unit testing
class RoomStateRestServlet(ClientV1RestServlet):
    PATTERNS = client_path_patterns("/rooms/(?P<room_id>[^/]*)/state$")

    def __init__(self, hs):
        super(RoomStateRestServlet, self).__init__(hs)
        self.handlers = hs.get_handlers()

    @defer.inlineCallbacks
    def on_GET(self, request, room_id):
        requester = yield self.auth.get_user_by_req(request, allow_guest=True)
        handler = self.handlers.message_handler
        # Get all the current state for this room
        events = yield handler.get_state_events(
            room_id=room_id,
            user_id=requester.user.to_string(),
            is_guest=requester.is_guest,
        )
        defer.returnValue((200, events))


# TODO: Needs unit testing
class RoomInitialSyncRestServlet(ClientV1RestServlet):
    PATTERNS = client_path_patterns("/rooms/(?P<room_id>[^/]*)/initialSync$")

    def __init__(self, hs):
        super(RoomInitialSyncRestServlet, self).__init__(hs)
        self.initial_sync_handler = hs.get_initial_sync_handler()

    @defer.inlineCallbacks
    def on_GET(self, request, room_id):
        requester = yield self.auth.get_user_by_req(request, allow_guest=True)
        pagination_config = PaginationConfig.from_request(request)
        content = yield self.initial_sync_handler.room_initial_sync(
            room_id=room_id,
            requester=requester,
            pagin_config=pagination_config,
        )
        defer.returnValue((200, content))


class RoomEventContext(ClientV1RestServlet):
    PATTERNS = client_path_patterns(
        "/rooms/(?P<room_id>[^/]*)/context/(?P<event_id>[^/]*)$"
    )

    def __init__(self, hs):
        super(RoomEventContext, self).__init__(hs)
        self.clock = hs.get_clock()
        self.handlers = hs.get_handlers()

    @defer.inlineCallbacks
    def on_GET(self, request, room_id, event_id):
        requester = yield self.auth.get_user_by_req(request, allow_guest=True)

        limit = int(request.args.get("limit", [10])[0])

        results = yield self.handlers.room_context_handler.get_event_context(
            requester.user,
            room_id,
            event_id,
            limit,
            requester.is_guest,
        )

        if not results:
            raise SynapseError(
                404, "Event not found.", errcode=Codes.NOT_FOUND
            )

        time_now = self.clock.time_msec()
        results["events_before"] = [
            serialize_event(event, time_now) for event in results["events_before"]
        ]
        results["event"] = serialize_event(results["event"], time_now)
        results["events_after"] = [
            serialize_event(event, time_now) for event in results["events_after"]
        ]
        results["state"] = [
            serialize_event(event, time_now) for event in results["state"]
        ]

        defer.returnValue((200, results))


class RoomForgetRestServlet(ClientV1RestServlet):
    def __init__(self, hs):
        super(RoomForgetRestServlet, self).__init__(hs)
        self.handlers = hs.get_handlers()

    def register(self, http_server):
        PATTERNS = ("/rooms/(?P<room_id>[^/]*)/forget")
        register_txn_path(self, PATTERNS, http_server)

    @defer.inlineCallbacks
    def on_POST(self, request, room_id, txn_id=None):
        requester = yield self.auth.get_user_by_req(
            request,
            allow_guest=False,
        )

        yield self.handlers.room_member_handler.forget(
            user=requester.user,
            room_id=room_id,
        )

        defer.returnValue((200, {}))

    def on_PUT(self, request, room_id, txn_id):
        return self.txns.fetch_or_execute_request(
            request, self.on_POST, request, room_id, txn_id
        )


# TODO: Needs unit testing
class RoomMembershipRestServlet(ClientV1RestServlet):

    def __init__(self, hs):
        super(RoomMembershipRestServlet, self).__init__(hs)
        self.handlers = hs.get_handlers()

    def register(self, http_server):
        # /rooms/$roomid/[invite|join|leave]
        PATTERNS = ("/rooms/(?P<room_id>[^/]*)/"
                    "(?P<membership_action>join|invite|leave|ban|unban|kick|forget)")
        register_txn_path(self, PATTERNS, http_server)

    @defer.inlineCallbacks
    def on_POST(self, request, room_id, membership_action, txn_id=None):
        requester = yield self.auth.get_user_by_req(
            request,
            allow_guest=True,
        )

        if requester.is_guest and membership_action not in {
            Membership.JOIN,
            Membership.LEAVE
        }:
            raise AuthError(403, "Guest access not allowed")

        try:
            content = parse_json_object_from_request(request)
        except:
            # Turns out we used to ignore the body entirely, and some clients
            # cheekily send invalid bodies.
            content = {}

        if membership_action == "invite" and self._has_3pid_invite_keys(content):
            yield self.handlers.room_member_handler.do_3pid_invite(
                room_id,
                requester.user,
                content["medium"],
                content["address"],
                content["id_server"],
                requester,
                txn_id
            )
            defer.returnValue((200, {}))
            return

        target = requester.user
        if membership_action in ["invite", "ban", "unban", "kick"]:
            if "user_id" not in content:
                raise SynapseError(400, "Missing user_id key.")
            target = UserID.from_string(content["user_id"])

        yield self.handlers.room_member_handler.update_membership(
            requester=requester,
            target=target,
            room_id=room_id,
            action=membership_action,
            txn_id=txn_id,
            third_party_signed=content.get("third_party_signed", None),
        )

        defer.returnValue((200, {}))

    def _has_3pid_invite_keys(self, content):
        for key in {"id_server", "medium", "address"}:
            if key not in content:
                return False
        return True

    def on_PUT(self, request, room_id, membership_action, txn_id):
        return self.txns.fetch_or_execute_request(
            request, self.on_POST, request, room_id, membership_action, txn_id
        )


class RoomRedactEventRestServlet(ClientV1RestServlet):
    def __init__(self, hs):
        super(RoomRedactEventRestServlet, self).__init__(hs)
        self.handlers = hs.get_handlers()

    def register(self, http_server):
        PATTERNS = ("/rooms/(?P<room_id>[^/]*)/redact/(?P<event_id>[^/]*)")
        register_txn_path(self, PATTERNS, http_server)

    @defer.inlineCallbacks
    def on_POST(self, request, room_id, event_id, txn_id=None):
        requester = yield self.auth.get_user_by_req(request)
        content = parse_json_object_from_request(request)

        msg_handler = self.handlers.message_handler
        event = yield msg_handler.create_and_send_nonmember_event(
            requester,
            {
                "type": EventTypes.Redaction,
                "content": content,
                "room_id": room_id,
                "sender": requester.user.to_string(),
                "redacts": event_id,
            },
            txn_id=txn_id,
        )

        defer.returnValue((200, {"event_id": event.event_id}))

    def on_PUT(self, request, room_id, event_id, txn_id):
        return self.txns.fetch_or_execute_request(
            request, self.on_POST, request, room_id, event_id, txn_id
        )


class RoomTypingRestServlet(ClientV1RestServlet):
    PATTERNS = client_path_patterns(
        "/rooms/(?P<room_id>[^/]*)/typing/(?P<user_id>[^/]*)$"
    )

    def __init__(self, hs):
        super(RoomTypingRestServlet, self).__init__(hs)
        self.presence_handler = hs.get_presence_handler()
        self.typing_handler = hs.get_typing_handler()

    @defer.inlineCallbacks
    def on_PUT(self, request, room_id, user_id):
        requester = yield self.auth.get_user_by_req(request)

        room_id = urllib.unquote(room_id)
        target_user = UserID.from_string(urllib.unquote(user_id))

        content = parse_json_object_from_request(request)

        yield self.presence_handler.bump_presence_active_time(requester.user)

        # Limit timeout to stop people from setting silly typing timeouts.
        timeout = min(content.get("timeout", 30000), 120000)

        if content["typing"]:
            yield self.typing_handler.started_typing(
                target_user=target_user,
                auth_user=requester.user,
                room_id=room_id,
                timeout=timeout,
            )
        else:
            yield self.typing_handler.stopped_typing(
                target_user=target_user,
                auth_user=requester.user,
                room_id=room_id,
            )

        defer.returnValue((200, {}))


class SearchRestServlet(ClientV1RestServlet):
    PATTERNS = client_path_patterns(
        "/search$"
    )

    def __init__(self, hs):
        super(SearchRestServlet, self).__init__(hs)
        self.handlers = hs.get_handlers()

    @defer.inlineCallbacks
    def on_POST(self, request):
        requester = yield self.auth.get_user_by_req(request)

        content = parse_json_object_from_request(request)

        batch = request.args.get("next_batch", [None])[0]
        results = yield self.handlers.search_handler.search(
            requester.user,
            content,
            batch,
        )

        defer.returnValue((200, results))


class JoinedRoomsRestServlet(ClientV1RestServlet):
    PATTERNS = client_path_patterns("/joined_rooms$")

    def __init__(self, hs):
        super(JoinedRoomsRestServlet, self).__init__(hs)
        self.store = hs.get_datastore()

    @defer.inlineCallbacks
    def on_GET(self, request):
        requester = yield self.auth.get_user_by_req(request, allow_guest=True)

        rooms = yield self.store.get_rooms_for_user(requester.user.to_string())
        room_ids = set(r.room_id for r in rooms)  # Ensure they're unique.
        defer.returnValue((200, {"joined_rooms": list(room_ids)}))


def register_txn_path(servlet, regex_string, http_server, with_get=False):
    """Registers a transaction-based path.

    This registers two paths:
        PUT regex_string/$txnid
        POST regex_string

    Args:
        regex_string (str): The regex string to register. Must NOT have a
        trailing $ as this string will be appended to.
        http_server : The http_server to register paths with.
        with_get: True to also register respective GET paths for the PUTs.
    """
    http_server.register_paths(
        "POST",
        client_path_patterns(regex_string + "$"),
        servlet.on_POST
    )
    http_server.register_paths(
        "PUT",
        client_path_patterns(regex_string + "/(?P<txn_id>[^/]*)$"),
        servlet.on_PUT
    )
    if with_get:
        http_server.register_paths(
            "GET",
            client_path_patterns(regex_string + "/(?P<txn_id>[^/]*)$"),
            servlet.on_GET
        )


def register_servlets(hs, http_server):
    RoomStateEventRestServlet(hs).register(http_server)
    RoomCreateRestServlet(hs).register(http_server)
    RoomMemberListRestServlet(hs).register(http_server)
    RoomMessageListRestServlet(hs).register(http_server)
    JoinRoomAliasServlet(hs).register(http_server)
    RoomForgetRestServlet(hs).register(http_server)
    RoomMembershipRestServlet(hs).register(http_server)
    RoomSendEventRestServlet(hs).register(http_server)
    PublicRoomListRestServlet(hs).register(http_server)
    RoomStateRestServlet(hs).register(http_server)
    RoomInitialSyncRestServlet(hs).register(http_server)
    RoomRedactEventRestServlet(hs).register(http_server)
    RoomTypingRestServlet(hs).register(http_server)
    SearchRestServlet(hs).register(http_server)
    JoinedRoomsRestServlet(hs).register(http_server)
    RoomEventContext(hs).register(http_server)