summary refs log tree commit diff
path: root/synapse/module_api/__init__.py
blob: 6d8bf54083646cbeb0d3425217f6e99c84b8e0ca (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
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
# Copyright 2017 New Vector Ltd
# Copyright 2020 The Matrix.org Foundation C.I.C.
#
# 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.
import email.utils
import logging
from typing import (
    TYPE_CHECKING,
    Any,
    Callable,
    Dict,
    Generator,
    Iterable,
    List,
    Optional,
    Tuple,
    TypeVar,
    Union,
)

import attr
import jinja2
from typing_extensions import ParamSpec

from twisted.internet import defer
from twisted.web.resource import Resource

from synapse.api import errors
from synapse.api.errors import SynapseError
from synapse.events import EventBase
from synapse.events.presence_router import (
    GET_INTERESTED_USERS_CALLBACK,
    GET_USERS_FOR_STATES_CALLBACK,
    PresenceRouter,
)
from synapse.events.spamcheck import (
    CHECK_EVENT_FOR_SPAM_CALLBACK,
    CHECK_MEDIA_FILE_FOR_SPAM_CALLBACK,
    CHECK_REGISTRATION_FOR_SPAM_CALLBACK,
    CHECK_USERNAME_FOR_SPAM_CALLBACK,
    SHOULD_DROP_FEDERATED_EVENT_CALLBACK,
    USER_MAY_CREATE_ROOM_ALIAS_CALLBACK,
    USER_MAY_CREATE_ROOM_CALLBACK,
    USER_MAY_INVITE_CALLBACK,
    USER_MAY_JOIN_ROOM_CALLBACK,
    USER_MAY_PUBLISH_ROOM_CALLBACK,
    USER_MAY_SEND_3PID_INVITE_CALLBACK,
    SpamChecker,
)
from synapse.events.third_party_rules import (
    CHECK_CAN_DEACTIVATE_USER_CALLBACK,
    CHECK_CAN_SHUTDOWN_ROOM_CALLBACK,
    CHECK_EVENT_ALLOWED_CALLBACK,
    CHECK_THREEPID_CAN_BE_INVITED_CALLBACK,
    CHECK_VISIBILITY_CAN_BE_MODIFIED_CALLBACK,
    ON_CREATE_ROOM_CALLBACK,
    ON_NEW_EVENT_CALLBACK,
    ON_PROFILE_UPDATE_CALLBACK,
    ON_THREEPID_BIND_CALLBACK,
    ON_USER_DEACTIVATION_STATUS_CHANGED_CALLBACK,
)
from synapse.handlers.account_data import ON_ACCOUNT_DATA_UPDATED_CALLBACK
from synapse.handlers.account_validity import (
    IS_USER_EXPIRED_CALLBACK,
    ON_LEGACY_ADMIN_REQUEST,
    ON_LEGACY_RENEW_CALLBACK,
    ON_LEGACY_SEND_MAIL_CALLBACK,
    ON_USER_REGISTRATION_CALLBACK,
)
from synapse.handlers.auth import (
    CHECK_3PID_AUTH_CALLBACK,
    CHECK_AUTH_CALLBACK,
    GET_DISPLAYNAME_FOR_REGISTRATION_CALLBACK,
    GET_USERNAME_FOR_REGISTRATION_CALLBACK,
    IS_3PID_ALLOWED_CALLBACK,
    ON_LOGGED_OUT_CALLBACK,
    AuthHandler,
)
from synapse.handlers.push_rules import RuleSpec, check_actions
from synapse.http.client import SimpleHttpClient
from synapse.http.server import (
    DirectServeHtmlResource,
    DirectServeJsonResource,
    respond_with_html,
)
from synapse.http.servlet import parse_json_object_from_request
from synapse.http.site import SynapseRequest
from synapse.logging.context import (
    defer_to_thread,
    make_deferred_yieldable,
    run_in_background,
)
from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.rest.client.login import LoginResponse
from synapse.storage import DataStore
from synapse.storage.background_updates import (
    DEFAULT_BATCH_SIZE_CALLBACK,
    MIN_BATCH_SIZE_CALLBACK,
    ON_UPDATE_CALLBACK,
)
from synapse.storage.database import DatabasePool, LoggingTransaction
from synapse.storage.databases.main.roommember import ProfileInfo
from synapse.storage.state import StateFilter
from synapse.types import (
    DomainSpecificString,
    JsonDict,
    JsonMapping,
    Requester,
    RoomAlias,
    StateMap,
    UserID,
    UserInfo,
    UserProfile,
    create_requester,
)
from synapse.util import Clock
from synapse.util.async_helpers import maybe_awaitable
from synapse.util.caches.descriptors import cached
from synapse.util.frozenutils import freeze

if TYPE_CHECKING:
    from synapse.app.generic_worker import GenericWorkerSlavedStore
    from synapse.server import HomeServer


T = TypeVar("T")
P = ParamSpec("P")

"""
This package defines the 'stable' API which can be used by extension modules which
are loaded into Synapse.
"""

PRESENCE_ALL_USERS = PresenceRouter.ALL_USERS
NOT_SPAM = SpamChecker.NOT_SPAM

__all__ = [
    "errors",
    "make_deferred_yieldable",
    "parse_json_object_from_request",
    "respond_with_html",
    "run_in_background",
    "cached",
    "NOT_SPAM",
    "UserID",
    "DatabasePool",
    "LoggingTransaction",
    "DirectServeHtmlResource",
    "DirectServeJsonResource",
    "ModuleApi",
    "PRESENCE_ALL_USERS",
    "LoginResponse",
    "JsonDict",
    "JsonMapping",
    "EventBase",
    "StateMap",
    "ProfileInfo",
    "RoomAlias",
    "UserProfile",
]

logger = logging.getLogger(__name__)


@attr.s(auto_attribs=True)
class UserIpAndAgent:
    """
    An IP address and user agent used by a user to connect to this homeserver.
    """

    ip: str
    user_agent: str
    # The time at which this user agent/ip was last seen.
    last_seen: int


class ModuleApi:
    """A proxy object that gets passed to various plugin modules so they
    can register new users etc if necessary.
    """

    def __init__(self, hs: "HomeServer", auth_handler: AuthHandler) -> None:
        self._hs = hs

        # TODO: Fix this type hint once the types for the data stores have been ironed
        #       out.
        self._store: Union[
            DataStore, "GenericWorkerSlavedStore"
        ] = hs.get_datastores().main
        self._storage_controllers = hs.get_storage_controllers()
        self._auth = hs.get_auth()
        self._auth_handler = auth_handler
        self._server_name = hs.hostname
        self._presence_stream = hs.get_event_sources().sources.presence
        self._state = hs.get_state_handler()
        self._clock: Clock = hs.get_clock()
        self._registration_handler = hs.get_registration_handler()
        self._send_email_handler = hs.get_send_email_handler()
        self._push_rules_handler = hs.get_push_rules_handler()
        self.custom_template_dir = hs.config.server.custom_template_directory

        try:
            app_name = self._hs.config.email.email_app_name

            self._from_string = self._hs.config.email.email_notif_from % {
                "app": app_name
            }
        except (KeyError, TypeError):
            # If substitution failed (which can happen if the string contains
            # placeholders other than just "app", or if the type of the placeholder is
            # not a string), fall back to the bare strings.
            self._from_string = self._hs.config.email.email_notif_from

        self._raw_from = email.utils.parseaddr(self._from_string)[1]

        # We expose these as properties below in order to attach a helpful docstring.
        self._http_client: SimpleHttpClient = hs.get_simple_http_client()
        self._public_room_list_manager = PublicRoomListManager(hs)
        self._account_data_manager = AccountDataManager(hs)

        self._spam_checker = hs.get_spam_checker()
        self._account_validity_handler = hs.get_account_validity_handler()
        self._third_party_event_rules = hs.get_third_party_event_rules()
        self._password_auth_provider = hs.get_password_auth_provider()
        self._presence_router = hs.get_presence_router()
        self._account_data_handler = hs.get_account_data_handler()

    #################################################################################
    # The following methods should only be called during the module's initialisation.

    def register_spam_checker_callbacks(
        self,
        *,
        check_event_for_spam: Optional[CHECK_EVENT_FOR_SPAM_CALLBACK] = None,
        should_drop_federated_event: Optional[
            SHOULD_DROP_FEDERATED_EVENT_CALLBACK
        ] = None,
        user_may_join_room: Optional[USER_MAY_JOIN_ROOM_CALLBACK] = None,
        user_may_invite: Optional[USER_MAY_INVITE_CALLBACK] = None,
        user_may_send_3pid_invite: Optional[USER_MAY_SEND_3PID_INVITE_CALLBACK] = None,
        user_may_create_room: Optional[USER_MAY_CREATE_ROOM_CALLBACK] = None,
        user_may_create_room_alias: Optional[
            USER_MAY_CREATE_ROOM_ALIAS_CALLBACK
        ] = None,
        user_may_publish_room: Optional[USER_MAY_PUBLISH_ROOM_CALLBACK] = None,
        check_username_for_spam: Optional[CHECK_USERNAME_FOR_SPAM_CALLBACK] = None,
        check_registration_for_spam: Optional[
            CHECK_REGISTRATION_FOR_SPAM_CALLBACK
        ] = None,
        check_media_file_for_spam: Optional[CHECK_MEDIA_FILE_FOR_SPAM_CALLBACK] = None,
    ) -> None:
        """Registers callbacks for spam checking capabilities.

        Added in Synapse v1.37.0.
        """
        return self._spam_checker.register_callbacks(
            check_event_for_spam=check_event_for_spam,
            should_drop_federated_event=should_drop_federated_event,
            user_may_join_room=user_may_join_room,
            user_may_invite=user_may_invite,
            user_may_send_3pid_invite=user_may_send_3pid_invite,
            user_may_create_room=user_may_create_room,
            user_may_create_room_alias=user_may_create_room_alias,
            user_may_publish_room=user_may_publish_room,
            check_username_for_spam=check_username_for_spam,
            check_registration_for_spam=check_registration_for_spam,
            check_media_file_for_spam=check_media_file_for_spam,
        )

    def register_account_validity_callbacks(
        self,
        *,
        is_user_expired: Optional[IS_USER_EXPIRED_CALLBACK] = None,
        on_user_registration: Optional[ON_USER_REGISTRATION_CALLBACK] = None,
        on_legacy_send_mail: Optional[ON_LEGACY_SEND_MAIL_CALLBACK] = None,
        on_legacy_renew: Optional[ON_LEGACY_RENEW_CALLBACK] = None,
        on_legacy_admin_request: Optional[ON_LEGACY_ADMIN_REQUEST] = None,
    ) -> None:
        """Registers callbacks for account validity capabilities.

        Added in Synapse v1.39.0.
        """
        return self._account_validity_handler.register_account_validity_callbacks(
            is_user_expired=is_user_expired,
            on_user_registration=on_user_registration,
            on_legacy_send_mail=on_legacy_send_mail,
            on_legacy_renew=on_legacy_renew,
            on_legacy_admin_request=on_legacy_admin_request,
        )

    def register_third_party_rules_callbacks(
        self,
        *,
        check_event_allowed: Optional[CHECK_EVENT_ALLOWED_CALLBACK] = None,
        on_create_room: Optional[ON_CREATE_ROOM_CALLBACK] = None,
        check_threepid_can_be_invited: Optional[
            CHECK_THREEPID_CAN_BE_INVITED_CALLBACK
        ] = None,
        check_visibility_can_be_modified: Optional[
            CHECK_VISIBILITY_CAN_BE_MODIFIED_CALLBACK
        ] = None,
        on_new_event: Optional[ON_NEW_EVENT_CALLBACK] = None,
        check_can_shutdown_room: Optional[CHECK_CAN_SHUTDOWN_ROOM_CALLBACK] = None,
        check_can_deactivate_user: Optional[CHECK_CAN_DEACTIVATE_USER_CALLBACK] = None,
        on_profile_update: Optional[ON_PROFILE_UPDATE_CALLBACK] = None,
        on_user_deactivation_status_changed: Optional[
            ON_USER_DEACTIVATION_STATUS_CHANGED_CALLBACK
        ] = None,
        on_threepid_bind: Optional[ON_THREEPID_BIND_CALLBACK] = None,
    ) -> None:
        """Registers callbacks for third party event rules capabilities.

        Added in Synapse v1.39.0.
        """
        return self._third_party_event_rules.register_third_party_rules_callbacks(
            check_event_allowed=check_event_allowed,
            on_create_room=on_create_room,
            check_threepid_can_be_invited=check_threepid_can_be_invited,
            check_visibility_can_be_modified=check_visibility_can_be_modified,
            on_new_event=on_new_event,
            check_can_shutdown_room=check_can_shutdown_room,
            check_can_deactivate_user=check_can_deactivate_user,
            on_profile_update=on_profile_update,
            on_user_deactivation_status_changed=on_user_deactivation_status_changed,
            on_threepid_bind=on_threepid_bind,
        )

    def register_presence_router_callbacks(
        self,
        *,
        get_users_for_states: Optional[GET_USERS_FOR_STATES_CALLBACK] = None,
        get_interested_users: Optional[GET_INTERESTED_USERS_CALLBACK] = None,
    ) -> None:
        """Registers callbacks for presence router capabilities.

        Added in Synapse v1.42.0.
        """
        return self._presence_router.register_presence_router_callbacks(
            get_users_for_states=get_users_for_states,
            get_interested_users=get_interested_users,
        )

    def register_password_auth_provider_callbacks(
        self,
        *,
        check_3pid_auth: Optional[CHECK_3PID_AUTH_CALLBACK] = None,
        on_logged_out: Optional[ON_LOGGED_OUT_CALLBACK] = None,
        auth_checkers: Optional[
            Dict[Tuple[str, Tuple[str, ...]], CHECK_AUTH_CALLBACK]
        ] = None,
        is_3pid_allowed: Optional[IS_3PID_ALLOWED_CALLBACK] = None,
        get_username_for_registration: Optional[
            GET_USERNAME_FOR_REGISTRATION_CALLBACK
        ] = None,
        get_displayname_for_registration: Optional[
            GET_DISPLAYNAME_FOR_REGISTRATION_CALLBACK
        ] = None,
    ) -> None:
        """Registers callbacks for password auth provider capabilities.

        Added in Synapse v1.46.0.
        """
        return self._password_auth_provider.register_password_auth_provider_callbacks(
            check_3pid_auth=check_3pid_auth,
            on_logged_out=on_logged_out,
            is_3pid_allowed=is_3pid_allowed,
            auth_checkers=auth_checkers,
            get_username_for_registration=get_username_for_registration,
            get_displayname_for_registration=get_displayname_for_registration,
        )

    def register_background_update_controller_callbacks(
        self,
        *,
        on_update: ON_UPDATE_CALLBACK,
        default_batch_size: Optional[DEFAULT_BATCH_SIZE_CALLBACK] = None,
        min_batch_size: Optional[MIN_BATCH_SIZE_CALLBACK] = None,
    ) -> None:
        """Registers background update controller callbacks.

        Added in Synapse v1.49.0.
        """

        for db in self._hs.get_datastores().databases:
            db.updates.register_update_controller_callbacks(
                on_update=on_update,
                default_batch_size=default_batch_size,
                min_batch_size=min_batch_size,
            )

    def register_account_data_callbacks(
        self,
        *,
        on_account_data_updated: Optional[ON_ACCOUNT_DATA_UPDATED_CALLBACK] = None,
    ) -> None:
        """Registers account data callbacks.

        Added in Synapse 1.57.0.
        """
        return self._account_data_handler.register_module_callbacks(
            on_account_data_updated=on_account_data_updated,
        )

    def register_web_resource(self, path: str, resource: Resource) -> None:
        """Registers a web resource to be served at the given path.

        This function should be called during initialisation of the module.

        If multiple modules register a resource for the same path, the module that
        appears the highest in the configuration file takes priority.

        Added in Synapse v1.37.0.

        Args:
            path: The path to register the resource for.
            resource: The resource to attach to this path.
        """
        self._hs.register_module_web_resource(path, resource)

    #########################################################################
    # The following methods can be called by the module at any point in time.

    @property
    def http_client(self) -> SimpleHttpClient:
        """Allows making outbound HTTP requests to remote resources.

        An instance of synapse.http.client.SimpleHttpClient

        Added in Synapse v1.22.0.
        """
        return self._http_client

    @property
    def public_room_list_manager(self) -> "PublicRoomListManager":
        """Allows adding to, removing from and checking the status of rooms in the
        public room list.

        An instance of synapse.module_api.PublicRoomListManager

        Added in Synapse v1.22.0.
        """
        return self._public_room_list_manager

    @property
    def account_data_manager(self) -> "AccountDataManager":
        """Allows reading and modifying users' account data.

        Added in Synapse v1.57.0.
        """
        return self._account_data_manager

    @property
    def public_baseurl(self) -> str:
        """The configured public base URL for this homeserver.

        Added in Synapse v1.39.0.
        """
        return self._hs.config.server.public_baseurl

    @property
    def email_app_name(self) -> str:
        """The application name configured in the homeserver's configuration.

        Added in Synapse v1.39.0.
        """
        return self._hs.config.email.email_app_name

    @property
    def server_name(self) -> str:
        """The server name for the local homeserver.

        Added in Synapse v1.53.0.
        """
        return self._server_name

    @property
    def worker_name(self) -> Optional[str]:
        """The name of the worker this specific instance is running as per the
        "worker_name" configuration setting, or None if it's the main process.

        Added in Synapse v1.53.0.
        """
        return self._hs.config.worker.worker_name

    @property
    def worker_app(self) -> Optional[str]:
        """The name of the worker app this specific instance is running as per the
        "worker_app" configuration setting, or None if it's the main process.

        Added in Synapse v1.53.0.
        """
        return self._hs.config.worker.worker_app

    async def get_userinfo_by_id(self, user_id: str) -> Optional[UserInfo]:
        """Get user info by user_id

        Added in Synapse v1.41.0.

        Args:
            user_id: Fully qualified user id.
        Returns:
            UserInfo object if a user was found, otherwise None
        """
        return await self._store.get_userinfo_by_id(user_id)

    async def get_user_by_req(
        self,
        req: SynapseRequest,
        allow_guest: bool = False,
        allow_expired: bool = False,
    ) -> Requester:
        """Check the access_token provided for a request

        Added in Synapse v1.39.0.

        Args:
            req: Incoming HTTP request
            allow_guest: True if guest users should be allowed. If this
                is False, and the access token is for a guest user, an
                AuthError will be thrown
            allow_expired: True if expired users should be allowed. If this
                is False, and the access token is for an expired user, an
                AuthError will be thrown

        Returns:
            The requester for this request

        Raises:
            InvalidClientCredentialsError: if no user by that token exists,
                or the token is invalid.
        """
        return await self._auth.get_user_by_req(
            req,
            allow_guest,
            allow_expired=allow_expired,
        )

    async def is_user_admin(self, user_id: str) -> bool:
        """Checks if a user is a server admin.

        Added in Synapse v1.39.0.

        Args:
            user_id: The Matrix ID of the user to check.

        Returns:
            True if the user is a server admin, False otherwise.
        """
        return await self._store.is_server_admin(UserID.from_string(user_id))

    async def set_user_admin(self, user_id: str, admin: bool) -> None:
        """Sets if a user is a server admin.

        Added in Synapse v1.56.0.

        Args:
            user_id: The Matrix ID of the user to set admin status for.
            admin: True iff the user is to be a server admin, false otherwise.
        """
        await self._store.set_server_admin(UserID.from_string(user_id), admin)

    def get_qualified_user_id(self, username: str) -> str:
        """Qualify a user id, if necessary

        Takes a user id provided by the user and adds the @ and :domain to
        qualify it, if necessary

        Added in Synapse v0.25.0.

        Args:
            username: provided user id

        Returns:
            qualified @user:id
        """
        if username.startswith("@"):
            return username
        return UserID(username, self._hs.hostname).to_string()

    async def get_profile_for_user(self, localpart: str) -> ProfileInfo:
        """Look up the profile info for the user with the given localpart.

        Added in Synapse v1.39.0.

        Args:
            localpart: The localpart to look up profile information for.

        Returns:
            The profile information (i.e. display name and avatar URL).
        """
        return await self._store.get_profileinfo(localpart)

    async def get_threepids_for_user(self, user_id: str) -> List[Dict[str, str]]:
        """Look up the threepids (email addresses and phone numbers) associated with the
        given Matrix user ID.

        Added in Synapse v1.39.0.

        Args:
            user_id: The Matrix user ID to look up threepids for.

        Returns:
            A list of threepids, each threepid being represented by a dictionary
            containing a "medium" key which value is "email" for email addresses and
            "msisdn" for phone numbers, and an "address" key which value is the
            threepid's address.
        """
        return await self._store.user_get_threepids(user_id)

    def check_user_exists(self, user_id: str) -> "defer.Deferred[Optional[str]]":
        """Check if user exists.

        Added in Synapse v0.25.0.

        Args:
            user_id: Complete @user:id

        Returns:
            Canonical (case-corrected) user_id, or None
               if the user is not registered.
        """
        return defer.ensureDeferred(self._auth_handler.check_user_exists(user_id))

    @defer.inlineCallbacks
    def register(
        self,
        localpart: str,
        displayname: Optional[str] = None,
        emails: Optional[List[str]] = None,
    ) -> Generator["defer.Deferred[Any]", Any, Tuple[str, str]]:
        """Registers a new user with given localpart and optional displayname, emails.

        Also returns an access token for the new user.

        Deprecated: avoid this, as it generates a new device with no way to
        return that device to the user. Prefer separate calls to register_user and
        register_device.

        Added in Synapse v0.25.0.

        Args:
            localpart: The localpart of the new user.
            displayname: The displayname of the new user.
            emails: Emails to bind to the new user.

        Returns:
            a 2-tuple of (user_id, access_token)
        """
        logger.warning(
            "Using deprecated ModuleApi.register which creates a dummy user device."
        )
        user_id = yield self.register_user(localpart, displayname, emails or [])
        _, access_token, _, _ = yield self.register_device(user_id)
        return user_id, access_token

    def register_user(
        self,
        localpart: str,
        displayname: Optional[str] = None,
        emails: Optional[List[str]] = None,
        admin: bool = False,
    ) -> "defer.Deferred[str]":
        """Registers a new user with given localpart and optional displayname, emails.

        Added in Synapse v1.2.0.
        Changed in Synapse v1.56.0: add 'admin' argument to register the user as admin.

        Args:
            localpart: The localpart of the new user.
            displayname: The displayname of the new user.
            emails: Emails to bind to the new user.
            admin: True if the user should be registered as a server admin.

        Raises:
            SynapseError if there is an error performing the registration. Check the
                'errcode' property for more information on the reason for failure

        Returns:
            user_id
        """
        return defer.ensureDeferred(
            self._hs.get_registration_handler().register_user(
                localpart=localpart,
                default_display_name=displayname,
                bind_emails=emails or [],
                admin=admin,
            )
        )

    def register_device(
        self,
        user_id: str,
        device_id: Optional[str] = None,
        initial_display_name: Optional[str] = None,
    ) -> "defer.Deferred[Tuple[str, str, Optional[int], Optional[str]]]":
        """Register a device for a user and generate an access token.

        Added in Synapse v1.2.0.

        Args:
            user_id: full canonical @user:id
            device_id: The device ID to check, or None to generate
                a new one.
            initial_display_name: An optional display name for the
                device.

        Returns:
            Tuple of device ID, access token, access token expiration time and refresh token
        """
        return defer.ensureDeferred(
            self._hs.get_registration_handler().register_device(
                user_id=user_id,
                device_id=device_id,
                initial_display_name=initial_display_name,
            )
        )

    def record_user_external_id(
        self, auth_provider_id: str, remote_user_id: str, registered_user_id: str
    ) -> defer.Deferred:
        """Record a mapping between an external user id from a single sign-on provider
        and a mxid.

        Added in Synapse v1.9.0.

        Args:
            auth_provider: identifier for the remote auth provider, see `sso` and
                `oidc_providers` in the homeserver configuration.

                Note that no error is raised if the provided value is not in the
                homeserver configuration.
            external_id: id on that system
            user_id: complete mxid that it is mapped to
        """
        return defer.ensureDeferred(
            self._store.record_user_external_id(
                auth_provider_id, remote_user_id, registered_user_id
            )
        )

    def generate_short_term_login_token(
        self,
        user_id: str,
        duration_in_ms: int = (2 * 60 * 1000),
        auth_provider_id: str = "",
        auth_provider_session_id: Optional[str] = None,
    ) -> str:
        """Generate a login token suitable for m.login.token authentication

        Added in Synapse v1.9.0.

        Args:
            user_id: gives the ID of the user that the token is for

            duration_in_ms: the time that the token will be valid for

            auth_provider_id: the ID of the SSO IdP that the user used to authenticate
               to get this token, if any. This is encoded in the token so that
               /login can report stats on number of successful logins by IdP.
        """
        return self._hs.get_macaroon_generator().generate_short_term_login_token(
            user_id,
            auth_provider_id,
            auth_provider_session_id,
            duration_in_ms,
        )

    @defer.inlineCallbacks
    def invalidate_access_token(
        self, access_token: str
    ) -> Generator["defer.Deferred[Any]", Any, None]:
        """Invalidate an access token for a user

        Added in Synapse v0.25.0.

        Args:
            access_token(str): access token

        Returns:
            twisted.internet.defer.Deferred - resolves once the access token
               has been removed.

        Raises:
            synapse.api.errors.AuthError: the access token is invalid
        """
        # see if the access token corresponds to a device
        user_info = yield defer.ensureDeferred(
            self._auth.get_user_by_access_token(access_token)
        )
        device_id = user_info.get("device_id")
        user_id = user_info["user"].to_string()
        if device_id:
            # delete the device, which will also delete its access tokens
            yield defer.ensureDeferred(
                self._hs.get_device_handler().delete_devices(user_id, [device_id])
            )
        else:
            # no associated device. Just delete the access token.
            yield defer.ensureDeferred(
                self._auth_handler.delete_access_token(access_token)
            )

    def run_db_interaction(
        self,
        desc: str,
        func: Callable[P, T],
        *args: P.args,
        **kwargs: P.kwargs,
    ) -> "defer.Deferred[T]":
        """Run a function with a database connection

        Added in Synapse v0.25.0.

        Args:
            desc: description for the transaction, for metrics etc
            func: function to be run. Passed a database cursor object
                as well as *args and **kwargs
            *args: positional args to be passed to func
            **kwargs: named args to be passed to func

        Returns:
            Deferred[object]: result of func
        """
        # type-ignore: See https://github.com/python/mypy/issues/8862
        return defer.ensureDeferred(
            self._store.db_pool.runInteraction(desc, func, *args, **kwargs)  # type: ignore[arg-type]
        )

    def complete_sso_login(
        self, registered_user_id: str, request: SynapseRequest, client_redirect_url: str
    ) -> None:
        """Complete a SSO login by redirecting the user to a page to confirm whether they
        want their access token sent to `client_redirect_url`, or redirect them to that
        URL with a token directly if the URL matches with one of the whitelisted clients.

        This is deprecated in favor of complete_sso_login_async.

        Added in Synapse v1.11.1.

        Args:
            registered_user_id: The MXID that has been registered as a previous step of
                of this SSO login.
            request: The request to respond to.
            client_redirect_url: The URL to which to offer to redirect the user (or to
                redirect them directly if whitelisted).
        """
        self._auth_handler._complete_sso_login(
            registered_user_id,
            "<unknown>",
            request,
            client_redirect_url,
        )

    async def complete_sso_login_async(
        self,
        registered_user_id: str,
        request: SynapseRequest,
        client_redirect_url: str,
        new_user: bool = False,
        auth_provider_id: str = "<unknown>",
    ) -> None:
        """Complete a SSO login by redirecting the user to a page to confirm whether they
        want their access token sent to `client_redirect_url`, or redirect them to that
        URL with a token directly if the URL matches with one of the whitelisted clients.

        Added in Synapse v1.13.0.

        Args:
            registered_user_id: The MXID that has been registered as a previous step of
                of this SSO login.
            request: The request to respond to.
            client_redirect_url: The URL to which to offer to redirect the user (or to
                redirect them directly if whitelisted).
            new_user: set to true to use wording for the consent appropriate to a user
                who has just registered.
            auth_provider_id: the ID of the SSO IdP which was used to log in. This
                is used to track counts of sucessful logins by IdP.
        """
        await self._auth_handler.complete_sso_login(
            registered_user_id,
            auth_provider_id,
            request,
            client_redirect_url,
            new_user=new_user,
        )

    @defer.inlineCallbacks
    def get_state_events_in_room(
        self, room_id: str, types: Iterable[Tuple[str, Optional[str]]]
    ) -> Generator[defer.Deferred, Any, Iterable[EventBase]]:
        """Gets current state events for the given room.

        (This is exposed for compatibility with the old SpamCheckerApi. We should
        probably deprecate it and replace it with an async method in a subclass.)

        Added in Synapse v1.22.0.

        Args:
            room_id: The room ID to get state events in.
            types: The event type and state key (using None
                to represent 'any') of the room state to acquire.

        Returns:
            twisted.internet.defer.Deferred[list(synapse.events.FrozenEvent)]:
                The filtered state events in the room.
        """
        state_ids = yield defer.ensureDeferred(
            self._storage_controllers.state.get_current_state_ids(
                room_id=room_id, state_filter=StateFilter.from_types(types)
            )
        )
        state = yield defer.ensureDeferred(self._store.get_events(state_ids.values()))
        return state.values()

    async def update_room_membership(
        self,
        sender: str,
        target: str,
        room_id: str,
        new_membership: str,
        content: Optional[JsonDict] = None,
    ) -> EventBase:
        """Updates the membership of a user to the given value.

        Added in Synapse v1.46.0.

        Args:
            sender: The user performing the membership change. Must be a user local to
                this homeserver.
            target: The user whose membership is changing. This is often the same value
                as `sender`, but it might differ in some cases (e.g. when kicking a user,
                the `sender` is the user performing the kick and the `target` is the user
                being kicked).
            room_id: The room in which to change the membership.
            new_membership: The new membership state of `target` after this operation. See
                https://spec.matrix.org/unstable/client-server-api/#mroommember for the
                list of allowed values.
            content: Additional values to include in the resulting event's content.

        Returns:
            The newly created membership event.

        Raises:
            RuntimeError if the `sender` isn't a local user.
            ShadowBanError if a shadow-banned requester attempts to send an invite.
            SynapseError if the module attempts to send a membership event that isn't
                allowed, either by the server's configuration (e.g. trying to set a
                per-room display name that's too long) or by the validation rules around
                membership updates (e.g. the `membership` value is invalid).
        """
        if not self.is_mine(sender):
            raise RuntimeError(
                "Tried to send an event as a user that isn't local to this homeserver",
            )

        requester = create_requester(sender)
        target_user_id = UserID.from_string(target)

        if content is None:
            content = {}

        # Set the profile if not already done by the module.
        if "avatar_url" not in content or "displayname" not in content:
            try:
                # Try to fetch the user's profile.
                profile = await self._hs.get_profile_handler().get_profile(
                    target_user_id.to_string(),
                )
            except SynapseError as e:
                # If the profile couldn't be found, use default values.
                profile = {
                    "displayname": target_user_id.localpart,
                    "avatar_url": None,
                }

                if e.code != 404:
                    # If the error isn't 404, it means we tried to fetch the profile over
                    # federation but the remote server responded with a non-standard
                    # status code.
                    logger.error(
                        "Got non-404 error status when fetching profile for %s",
                        target_user_id.to_string(),
                    )

            # Set the profile where it needs to be set.
            if "avatar_url" not in content:
                content["avatar_url"] = profile["avatar_url"]

            if "displayname" not in content:
                content["displayname"] = profile["displayname"]

        event_id, _ = await self._hs.get_room_member_handler().update_membership(
            requester=requester,
            target=target_user_id,
            room_id=room_id,
            action=new_membership,
            content=content,
        )

        # Try to retrieve the resulting event.
        event = await self._hs.get_datastores().main.get_event(event_id)

        # update_membership is supposed to always return after the event has been
        # successfully persisted.
        assert event is not None

        return event

    async def create_and_send_event_into_room(self, event_dict: JsonDict) -> EventBase:
        """Create and send an event into a room.

        Membership events are not supported by this method. To update a user's membership
        in a room, please use the `update_room_membership` method instead.

        Added in Synapse v1.22.0.

        Args:
            event_dict: A dictionary representing the event to send.
                Required keys are `type`, `room_id`, `sender` and `content`.

        Returns:
            The event that was sent. If state event deduplication happened, then
                the previous, duplicate event instead.

        Raises:
            SynapseError if the event was not allowed.
        """
        # Create a requester object
        requester = create_requester(
            event_dict["sender"], authenticated_entity=self._server_name
        )

        # Create and send the event
        (
            event,
            _,
        ) = await self._hs.get_event_creation_handler().create_and_send_nonmember_event(
            requester,
            event_dict,
            ratelimit=False,
            ignore_shadow_ban=True,
        )

        return event

    async def send_local_online_presence_to(self, users: Iterable[str]) -> None:
        """
        Forces the equivalent of a presence initial_sync for a set of local or remote
        users. The users will receive presence for all currently online users that they
        are considered interested in.

        Updates to remote users will be sent immediately, whereas local users will receive
        them on their next sync attempt.

        Note that this method can only be run on the process that is configured to write to the
        presence stream. By default this is the main process.

        Added in Synapse v1.32.0.
        """
        if self._hs._instance_name not in self._hs.config.worker.writers.presence:
            raise Exception(
                "send_local_online_presence_to can only be run "
                "on the process that is configured to write to the "
                "presence stream (by default this is the main process)",
            )

        local_users = set()
        remote_users = set()
        for user in users:
            if self._hs.is_mine_id(user):
                local_users.add(user)
            else:
                remote_users.add(user)

        # We pull out the presence handler here to break a cyclic
        # dependency between the presence router and module API.
        presence_handler = self._hs.get_presence_handler()

        if local_users:
            # Force a presence initial_sync for these users next time they sync.
            await presence_handler.send_full_presence_to_users(local_users)

        for user in remote_users:
            # Retrieve presence state for currently online users that this user
            # is considered interested in.
            presence_events, _ = await self._presence_stream.get_new_events(
                UserID.from_string(user), from_key=None, include_offline=False
            )

            # Send to remote destinations.
            destination = UserID.from_string(user).domain
            presence_handler.get_federation_queue().send_presence_to_destinations(
                presence_events, destination
            )

    def looping_background_call(
        self,
        f: Callable,
        msec: float,
        *args: object,
        desc: Optional[str] = None,
        run_on_all_instances: bool = False,
        **kwargs: object,
    ) -> None:
        """Wraps a function as a background process and calls it repeatedly.

        NOTE: Will only run on the instance that is configured to run
        background processes (which is the main process by default), unless
        `run_on_all_workers` is set.

        Waits `msec` initially before calling `f` for the first time.

        Added in Synapse v1.39.0.

        Args:
            f: The function to call repeatedly. f can be either synchronous or
                asynchronous, and must follow Synapse's logcontext rules.
                More info about logcontexts is available at
                https://matrix-org.github.io/synapse/latest/log_contexts.html
            msec: How long to wait between calls in milliseconds.
            *args: Positional arguments to pass to function.
            desc: The background task's description. Default to the function's name.
            run_on_all_instances: Whether to run this on all instances, rather
                than just the instance configured to run background tasks.
            **kwargs: Key arguments to pass to function.
        """
        if desc is None:
            desc = f.__name__

        if self._hs.config.worker.run_background_tasks or run_on_all_instances:
            self._clock.looping_call(
                run_as_background_process,
                msec,
                desc,
                lambda: maybe_awaitable(f(*args, **kwargs)),
            )
        else:
            logger.warning(
                "Not running looping call %s as the configuration forbids it",
                f,
            )

    async def sleep(self, seconds: float) -> None:
        """Sleeps for the given number of seconds.

        Added in Synapse v1.49.0.
        """

        await self._clock.sleep(seconds)

    async def send_mail(
        self,
        recipient: str,
        subject: str,
        html: str,
        text: str,
    ) -> None:
        """Send an email on behalf of the homeserver.

        Added in Synapse v1.39.0.

        Args:
            recipient: The email address for the recipient.
            subject: The email's subject.
            html: The email's HTML content.
            text: The email's text content.
        """
        await self._send_email_handler.send_email(
            email_address=recipient,
            subject=subject,
            app_name=self.email_app_name,
            html=html,
            text=text,
        )

    def read_templates(
        self,
        filenames: List[str],
        custom_template_directory: Optional[str] = None,
    ) -> List[jinja2.Template]:
        """Read and load the content of the template files at the given location.
        By default, Synapse will look for these templates in its configured template
        directory, but another directory to search in can be provided.

        Added in Synapse v1.39.0.

        Args:
            filenames: The name of the template files to look for.
            custom_template_directory: An additional directory to look for the files in.

        Returns:
            A list containing the loaded templates, with the orders matching the one of
            the filenames parameter.
        """
        return self._hs.config.server.read_templates(
            filenames,
            (td for td in (self.custom_template_dir, custom_template_directory) if td),
        )

    def is_mine(self, id: Union[str, DomainSpecificString]) -> bool:
        """
        Checks whether an ID (user id, room, ...) comes from this homeserver.

        Added in Synapse v1.44.0.

        Args:
            id: any Matrix id (e.g. user id, room id, ...), either as a raw id,
                e.g. string "@user:example.com" or as a parsed UserID, RoomID, ...
        Returns:
            True if id comes from this homeserver, False otherwise.
        """
        if isinstance(id, DomainSpecificString):
            return self._hs.is_mine(id)
        else:
            return self._hs.is_mine_id(id)

    async def get_user_ip_and_agents(
        self, user_id: str, since_ts: int = 0
    ) -> List[UserIpAndAgent]:
        """
        Return the list of user IPs and agents for a user.

        Added in Synapse v1.44.0.

        Args:
            user_id: the id of a user, local or remote
            since_ts: a timestamp in seconds since the epoch,
                or the epoch itself if not specified.
        Returns:
            The list of all UserIpAndAgent that the user has
            used to connect to this homeserver since `since_ts`.
            If the user is remote, this list is empty.
        """
        # Don't hit the db if this is not a local user.
        is_mine = False
        try:
            # Let's be defensive against ill-formed strings.
            if self.is_mine(user_id):
                is_mine = True
        except Exception:
            pass

        if is_mine:
            raw_data = await self._store.get_user_ip_and_agents(
                UserID.from_string(user_id), since_ts
            )
            # Sanitize some of the data. We don't want to return tokens.
            return [
                UserIpAndAgent(
                    ip=data["ip"],
                    user_agent=data["user_agent"],
                    last_seen=data["last_seen"],
                )
                for data in raw_data
            ]
        else:
            return []

    async def get_room_state(
        self,
        room_id: str,
        event_filter: Optional[Iterable[Tuple[str, Optional[str]]]] = None,
    ) -> StateMap[EventBase]:
        """Returns the current state of the given room.

        The events are returned as a mapping, in which the key for each event is a tuple
        which first element is the event's type and the second one is its state key.

        Added in Synapse v1.47.0

        Args:
            room_id: The ID of the room to get state from.
            event_filter: A filter to apply when retrieving events. None if no filter
                should be applied. If provided, must be an iterable of tuples. A tuple's
                first element is the event type and the second is the state key, or is
                None if the state key should not be filtered on.
                An example of a filter is:
                    [
                        ("m.room.member", "@alice:example.com"),  # Member event for @alice:example.com
                        ("org.matrix.some_event", ""),  # State event of type "org.matrix.some_event"
                                                        # with an empty string as its state key
                        ("org.matrix.some_other_event", None),  # State events of type "org.matrix.some_other_event"
                                                                # regardless of their state key
                    ]
        """
        state_filter = None
        if event_filter:
            # If a filter was provided, turn it into a StateFilter and retrieve a filtered
            # view of the state.
            state_filter = StateFilter.from_types(event_filter)

        state_ids = await self._storage_controllers.state.get_current_state_ids(
            room_id,
            state_filter,
        )

        state_events = await self._store.get_events(state_ids.values())

        return {key: state_events[event_id] for key, event_id in state_ids.items()}

    async def defer_to_thread(
        self,
        f: Callable[P, T],
        *args: P.args,
        **kwargs: P.kwargs,
    ) -> T:
        """Runs the given function in a separate thread from Synapse's thread pool.

        Added in Synapse v1.49.0.

        Args:
            f: The function to run.
            args: The function's arguments.
            kwargs: The function's keyword arguments.

        Returns:
            The return value of the function once ran in a thread.
        """
        return await defer_to_thread(self._hs.get_reactor(), f, *args, **kwargs)

    async def check_username(self, username: str) -> None:
        """Checks if the provided username uses the grammar defined in the Matrix
        specification, and is already being used by an existing user.

        Added in Synapse v1.52.0.

        Args:
            username: The username to check. This is the local part of the user's full
                Matrix user ID, i.e. it's "alice" if the full user ID is "@alice:foo.com".

        Raises:
            SynapseError with the errcode "M_USER_IN_USE" if the username is already in
            use.
        """
        await self._registration_handler.check_username(username)

    async def store_remote_3pid_association(
        self, user_id: str, medium: str, address: str, id_server: str
    ) -> None:
        """Stores an existing association between a user ID and a third-party identifier.

        The association must already exist on the remote identity server.

        Added in Synapse v1.56.0.

        Args:
            user_id: The user ID that's been associated with the 3PID.
            medium: The medium of the 3PID (current supported values are "msisdn" and
                "email").
            address: The address of the 3PID.
            id_server: The identity server the 3PID association has been registered on.
                This should only be the domain (or IP address, optionally with the port
                number) for the identity server. This will be used to reach out to the
                identity server using HTTPS (unless specified otherwise by Synapse's
                configuration) when attempting to unbind the third-party identifier.


        """
        await self._store.add_user_bound_threepid(user_id, medium, address, id_server)

    def check_push_rule_actions(
        self, actions: List[Union[str, Dict[str, str]]]
    ) -> None:
        """Checks if the given push rule actions are valid according to the Matrix
        specification.

        See https://spec.matrix.org/v1.2/client-server-api/#actions for the list of valid
        actions.

        Added in Synapse v1.58.0.

        Args:
            actions: the actions to check.

        Raises:
            synapse.module_api.errors.InvalidRuleException if the actions are invalid.
        """
        check_actions(actions)

    async def set_push_rule_action(
        self,
        user_id: str,
        scope: str,
        kind: str,
        rule_id: str,
        actions: List[Union[str, Dict[str, str]]],
    ) -> None:
        """Changes the actions of an existing push rule for the given user.

        See https://spec.matrix.org/v1.2/client-server-api/#push-rules for more
        information about push rules and their syntax.

        Can only be called on the main process.

        Added in Synapse v1.58.0.

        Args:
            user_id: the user for which to change the push rule's actions.
            scope: the push rule's scope, currently only "global" is allowed.
            kind: the push rule's kind.
            rule_id: the push rule's identifier.
            actions: the actions to run when the rule's conditions match.

        Raises:
            RuntimeError if this method is called on a worker or `scope` is invalid.
            synapse.module_api.errors.RuleNotFoundException if the rule being modified
                can't be found.
            synapse.module_api.errors.InvalidRuleException if the actions are invalid.
        """
        if self.worker_app is not None:
            raise RuntimeError("module tried to change push rule actions on a worker")

        if scope != "global":
            raise RuntimeError(
                "invalid scope %s, only 'global' is currently allowed" % scope
            )

        spec = RuleSpec(scope, kind, rule_id, "actions")
        await self._push_rules_handler.set_rule_attr(
            user_id, spec, {"actions": actions}
        )

    async def get_monthly_active_users_by_service(
        self, start_timestamp: Optional[int] = None, end_timestamp: Optional[int] = None
    ) -> List[Tuple[str, str]]:
        """Generates list of monthly active users and their services.
        Please see corresponding storage docstring for more details.

        Added in Synapse v1.61.0.

        Arguments:
            start_timestamp: If specified, only include users that were first active
                at or after this point
            end_timestamp: If specified, only include users that were first active
                at or before this point

        Returns:
            A list of tuples (appservice_id, user_id)

        """
        return await self._store.get_monthly_active_users_by_service(
            start_timestamp, end_timestamp
        )


class PublicRoomListManager:
    """Contains methods for adding to, removing from and querying whether a room
    is in the public room list.
    """

    def __init__(self, hs: "HomeServer"):
        self._store = hs.get_datastores().main

    async def room_is_in_public_room_list(self, room_id: str) -> bool:
        """Checks whether a room is in the public room list.

        Added in Synapse v1.22.0.

        Args:
            room_id: The ID of the room.

        Returns:
            Whether the room is in the public room list. Returns False if the room does
            not exist.
        """
        room = await self._store.get_room(room_id)
        if not room:
            return False

        return room.get("is_public", False)

    async def add_room_to_public_room_list(self, room_id: str) -> None:
        """Publishes a room to the public room list.

        Added in Synapse v1.22.0.

        Args:
            room_id: The ID of the room.
        """
        await self._store.set_room_is_public(room_id, True)

    async def remove_room_from_public_room_list(self, room_id: str) -> None:
        """Removes a room from the public room list.

        Added in Synapse v1.22.0.

        Args:
            room_id: The ID of the room.
        """
        await self._store.set_room_is_public(room_id, False)


class AccountDataManager:
    """
    Allows modules to manage account data.
    """

    def __init__(self, hs: "HomeServer") -> None:
        self._hs = hs
        self._store = hs.get_datastores().main
        self._handler = hs.get_account_data_handler()

    def _validate_user_id(self, user_id: str) -> None:
        """
        Validates a user ID is valid and local.
        Private method to be used in other account data methods.
        """
        user = UserID.from_string(user_id)
        if not self._hs.is_mine(user):
            raise ValueError(
                f"{user_id} is not local to this homeserver; can't access account data for remote users."
            )

    async def get_global(self, user_id: str, data_type: str) -> Optional[JsonMapping]:
        """
        Gets some global account data, of a specified type, for the specified user.

        The provided user ID must be a valid user ID of a local user.

        Added in Synapse v1.57.0.
        """
        self._validate_user_id(user_id)

        data = await self._store.get_global_account_data_by_type_for_user(
            user_id, data_type
        )
        # We clone and freeze to prevent the module accidentally mutating the
        # dict that lives in the cache, as that could introduce nasty bugs.
        return freeze(data)

    async def put_global(
        self, user_id: str, data_type: str, new_data: JsonDict
    ) -> None:
        """
        Puts some global account data, of a specified type, for the specified user.

        The provided user ID must be a valid user ID of a local user.

        Please note that this will overwrite existing the account data of that type
        for that user!

        Added in Synapse v1.57.0.
        """
        self._validate_user_id(user_id)

        if not isinstance(data_type, str):
            raise TypeError(f"data_type must be a str; got {type(data_type).__name__}")

        if not isinstance(new_data, dict):
            raise TypeError(f"new_data must be a dict; got {type(new_data).__name__}")

        # Ensure the user exists, so we don't just write to users that aren't there.
        if await self._store.get_userinfo_by_id(user_id) is None:
            raise ValueError(f"User {user_id} does not exist on this server.")

        await self._handler.add_account_data_for_user(user_id, data_type, new_data)