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aka PEP 604, added in Python 3.10
535 lines
18 KiB
Python
535 lines
18 KiB
Python
#
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# This file is licensed under the Affero General Public License (AGPL) version 3.
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#
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# Copyright (C) 2023 New Vector, Ltd
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# See the GNU Affero General Public License for more details:
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# <https://www.gnu.org/licenses/agpl-3.0.html>.
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#
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# Originally licensed under the Apache License, Version 2.0:
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# <http://www.apache.org/licenses/LICENSE-2.0>.
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#
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# [This file includes modifications made by New Vector Limited]
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#
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#
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from typing import Callable
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import attr
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class EventFormatVersions:
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"""This is an internal enum for tracking the version of the event format,
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independently of the room version.
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To reduce confusion, the event format versions are named after the room
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versions that they were used or introduced in.
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The concept of an 'event format version' is specific to Synapse (the
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specification does not mention this term.)
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"""
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ROOM_V1_V2 = 1 # $id:server event id format: used for room v1 and v2
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ROOM_V3 = 2 # MSC1659-style $hash event id format: used for room v3
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ROOM_V4_PLUS = 3 # MSC1884-style $hash format: introduced for room v4
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ROOM_V11_HYDRA_PLUS = 4 # MSC4291 room IDs as hashes: introduced for room HydraV11
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KNOWN_EVENT_FORMAT_VERSIONS = {
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EventFormatVersions.ROOM_V1_V2,
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EventFormatVersions.ROOM_V3,
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EventFormatVersions.ROOM_V4_PLUS,
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EventFormatVersions.ROOM_V11_HYDRA_PLUS,
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}
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class StateResolutionVersions:
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"""Enum to identify the state resolution algorithms"""
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V1 = 1 # room v1 state res
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V2 = 2 # MSC1442 state res: room v2 and later
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V2_1 = 3 # MSC4297 state res
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class RoomDisposition:
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STABLE = "stable"
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UNSTABLE = "unstable"
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class PushRuleRoomFlag:
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"""Enum for listing possible MSC3931 room version feature flags, for push rules"""
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# MSC3932: Room version supports MSC1767 Extensible Events.
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EXTENSIBLE_EVENTS = "org.matrix.msc3932.extensible_events"
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@attr.s(slots=True, frozen=True, auto_attribs=True)
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class RoomVersion:
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"""An object which describes the unique attributes of a room version."""
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identifier: str # the identifier for this version
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disposition: str # one of the RoomDispositions
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event_format: int # one of the EventFormatVersions
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state_res: int # one of the StateResolutionVersions
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enforce_key_validity: bool
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# Before MSC2432, m.room.aliases had special auth rules and redaction rules
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special_case_aliases_auth: bool
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# Strictly enforce canonicaljson, do not allow:
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# * Integers outside the range of [-2 ^ 53 + 1, 2 ^ 53 - 1]
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# * Floats
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# * NaN, Infinity, -Infinity
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strict_canonicaljson: bool
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# MSC2209: Check 'notifications' key while verifying
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# m.room.power_levels auth rules.
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limit_notifications_power_levels: bool
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# No longer include the creator in m.room.create events.
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implicit_room_creator: bool
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# Apply updated redaction rules algorithm from room version 11.
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updated_redaction_rules: bool
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# Support the 'restricted' join rule.
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restricted_join_rule: bool
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# Support for the proper redaction rules for the restricted join rule. This requires
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# restricted_join_rule to be enabled.
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restricted_join_rule_fix: bool
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# Support the 'knock' join rule.
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knock_join_rule: bool
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# MSC3389: Protect relation information from redaction.
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msc3389_relation_redactions: bool
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# Support the 'knock_restricted' join rule.
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knock_restricted_join_rule: bool
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# Enforce integer power levels
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enforce_int_power_levels: bool
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# MSC3931: Adds a push rule condition for "room version feature flags", making
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# some push rules room version dependent. Note that adding a flag to this list
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# is not enough to mark it "supported": the push rule evaluator also needs to
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# support the flag. Unknown flags are ignored by the evaluator, making conditions
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# fail if used.
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msc3931_push_features: tuple[str, ...] # values from PushRuleRoomFlag
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# MSC3757: Restricting who can overwrite a state event
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msc3757_enabled: bool
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# MSC4289: Creator power enabled
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msc4289_creator_power_enabled: bool
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# MSC4291: Room IDs as hashes of the create event
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msc4291_room_ids_as_hashes: bool
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class RoomVersions:
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V1 = RoomVersion(
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"1",
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RoomDisposition.STABLE,
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EventFormatVersions.ROOM_V1_V2,
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StateResolutionVersions.V1,
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enforce_key_validity=False,
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special_case_aliases_auth=True,
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strict_canonicaljson=False,
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limit_notifications_power_levels=False,
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implicit_room_creator=False,
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updated_redaction_rules=False,
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restricted_join_rule=False,
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restricted_join_rule_fix=False,
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knock_join_rule=False,
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msc3389_relation_redactions=False,
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knock_restricted_join_rule=False,
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enforce_int_power_levels=False,
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msc3931_push_features=(),
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msc3757_enabled=False,
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msc4289_creator_power_enabled=False,
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msc4291_room_ids_as_hashes=False,
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)
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V2 = RoomVersion(
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"2",
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RoomDisposition.STABLE,
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EventFormatVersions.ROOM_V1_V2,
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StateResolutionVersions.V2,
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enforce_key_validity=False,
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special_case_aliases_auth=True,
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strict_canonicaljson=False,
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limit_notifications_power_levels=False,
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implicit_room_creator=False,
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updated_redaction_rules=False,
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restricted_join_rule=False,
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restricted_join_rule_fix=False,
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knock_join_rule=False,
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msc3389_relation_redactions=False,
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knock_restricted_join_rule=False,
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enforce_int_power_levels=False,
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msc3931_push_features=(),
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msc3757_enabled=False,
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msc4289_creator_power_enabled=False,
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msc4291_room_ids_as_hashes=False,
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)
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V3 = RoomVersion(
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"3",
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RoomDisposition.STABLE,
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EventFormatVersions.ROOM_V3,
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StateResolutionVersions.V2,
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enforce_key_validity=False,
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special_case_aliases_auth=True,
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strict_canonicaljson=False,
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limit_notifications_power_levels=False,
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implicit_room_creator=False,
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updated_redaction_rules=False,
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restricted_join_rule=False,
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restricted_join_rule_fix=False,
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knock_join_rule=False,
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msc3389_relation_redactions=False,
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knock_restricted_join_rule=False,
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enforce_int_power_levels=False,
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msc3931_push_features=(),
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msc3757_enabled=False,
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msc4289_creator_power_enabled=False,
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msc4291_room_ids_as_hashes=False,
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)
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V4 = RoomVersion(
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"4",
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RoomDisposition.STABLE,
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EventFormatVersions.ROOM_V4_PLUS,
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StateResolutionVersions.V2,
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enforce_key_validity=False,
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special_case_aliases_auth=True,
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strict_canonicaljson=False,
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limit_notifications_power_levels=False,
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implicit_room_creator=False,
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updated_redaction_rules=False,
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restricted_join_rule=False,
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restricted_join_rule_fix=False,
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knock_join_rule=False,
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msc3389_relation_redactions=False,
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knock_restricted_join_rule=False,
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enforce_int_power_levels=False,
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msc3931_push_features=(),
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msc3757_enabled=False,
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msc4289_creator_power_enabled=False,
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msc4291_room_ids_as_hashes=False,
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)
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V5 = RoomVersion(
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"5",
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RoomDisposition.STABLE,
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EventFormatVersions.ROOM_V4_PLUS,
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StateResolutionVersions.V2,
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enforce_key_validity=True,
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special_case_aliases_auth=True,
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strict_canonicaljson=False,
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limit_notifications_power_levels=False,
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implicit_room_creator=False,
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updated_redaction_rules=False,
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restricted_join_rule=False,
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restricted_join_rule_fix=False,
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knock_join_rule=False,
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msc3389_relation_redactions=False,
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knock_restricted_join_rule=False,
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enforce_int_power_levels=False,
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msc3931_push_features=(),
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msc3757_enabled=False,
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msc4289_creator_power_enabled=False,
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msc4291_room_ids_as_hashes=False,
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)
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V6 = RoomVersion(
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"6",
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RoomDisposition.STABLE,
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EventFormatVersions.ROOM_V4_PLUS,
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StateResolutionVersions.V2,
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enforce_key_validity=True,
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special_case_aliases_auth=False,
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strict_canonicaljson=True,
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limit_notifications_power_levels=True,
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implicit_room_creator=False,
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updated_redaction_rules=False,
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restricted_join_rule=False,
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restricted_join_rule_fix=False,
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knock_join_rule=False,
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msc3389_relation_redactions=False,
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knock_restricted_join_rule=False,
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enforce_int_power_levels=False,
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msc3931_push_features=(),
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msc3757_enabled=False,
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msc4289_creator_power_enabled=False,
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msc4291_room_ids_as_hashes=False,
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)
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V7 = RoomVersion(
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"7",
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RoomDisposition.STABLE,
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EventFormatVersions.ROOM_V4_PLUS,
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StateResolutionVersions.V2,
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enforce_key_validity=True,
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special_case_aliases_auth=False,
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strict_canonicaljson=True,
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limit_notifications_power_levels=True,
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implicit_room_creator=False,
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updated_redaction_rules=False,
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restricted_join_rule=False,
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restricted_join_rule_fix=False,
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knock_join_rule=True,
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msc3389_relation_redactions=False,
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knock_restricted_join_rule=False,
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enforce_int_power_levels=False,
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msc3931_push_features=(),
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msc3757_enabled=False,
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msc4289_creator_power_enabled=False,
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msc4291_room_ids_as_hashes=False,
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)
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V8 = RoomVersion(
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"8",
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RoomDisposition.STABLE,
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EventFormatVersions.ROOM_V4_PLUS,
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StateResolutionVersions.V2,
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enforce_key_validity=True,
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special_case_aliases_auth=False,
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strict_canonicaljson=True,
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limit_notifications_power_levels=True,
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implicit_room_creator=False,
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updated_redaction_rules=False,
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restricted_join_rule=True,
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restricted_join_rule_fix=False,
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knock_join_rule=True,
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msc3389_relation_redactions=False,
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knock_restricted_join_rule=False,
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enforce_int_power_levels=False,
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msc3931_push_features=(),
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msc3757_enabled=False,
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msc4289_creator_power_enabled=False,
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msc4291_room_ids_as_hashes=False,
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)
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V9 = RoomVersion(
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"9",
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RoomDisposition.STABLE,
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EventFormatVersions.ROOM_V4_PLUS,
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StateResolutionVersions.V2,
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enforce_key_validity=True,
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special_case_aliases_auth=False,
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strict_canonicaljson=True,
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limit_notifications_power_levels=True,
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implicit_room_creator=False,
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updated_redaction_rules=False,
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restricted_join_rule=True,
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restricted_join_rule_fix=True,
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knock_join_rule=True,
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msc3389_relation_redactions=False,
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knock_restricted_join_rule=False,
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enforce_int_power_levels=False,
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msc3931_push_features=(),
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msc3757_enabled=False,
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msc4289_creator_power_enabled=False,
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msc4291_room_ids_as_hashes=False,
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)
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V10 = RoomVersion(
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"10",
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RoomDisposition.STABLE,
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EventFormatVersions.ROOM_V4_PLUS,
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StateResolutionVersions.V2,
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enforce_key_validity=True,
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special_case_aliases_auth=False,
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strict_canonicaljson=True,
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limit_notifications_power_levels=True,
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implicit_room_creator=False,
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updated_redaction_rules=False,
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restricted_join_rule=True,
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restricted_join_rule_fix=True,
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knock_join_rule=True,
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msc3389_relation_redactions=False,
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knock_restricted_join_rule=True,
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enforce_int_power_levels=True,
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msc3931_push_features=(),
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msc3757_enabled=False,
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msc4289_creator_power_enabled=False,
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msc4291_room_ids_as_hashes=False,
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)
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MSC1767v10 = RoomVersion(
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# MSC1767 (Extensible Events) based on room version "10"
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"org.matrix.msc1767.10",
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RoomDisposition.UNSTABLE,
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EventFormatVersions.ROOM_V4_PLUS,
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StateResolutionVersions.V2,
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enforce_key_validity=True,
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special_case_aliases_auth=False,
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strict_canonicaljson=True,
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limit_notifications_power_levels=True,
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implicit_room_creator=False,
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updated_redaction_rules=False,
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restricted_join_rule=True,
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restricted_join_rule_fix=True,
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knock_join_rule=True,
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msc3389_relation_redactions=False,
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knock_restricted_join_rule=True,
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enforce_int_power_levels=True,
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msc3931_push_features=(PushRuleRoomFlag.EXTENSIBLE_EVENTS,),
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msc3757_enabled=False,
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msc4289_creator_power_enabled=False,
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msc4291_room_ids_as_hashes=False,
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)
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MSC3757v10 = RoomVersion(
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# MSC3757 (Restricting who can overwrite a state event) based on room version "10"
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"org.matrix.msc3757.10",
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RoomDisposition.UNSTABLE,
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EventFormatVersions.ROOM_V4_PLUS,
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StateResolutionVersions.V2,
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enforce_key_validity=True,
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special_case_aliases_auth=False,
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strict_canonicaljson=True,
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limit_notifications_power_levels=True,
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implicit_room_creator=False,
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updated_redaction_rules=False,
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restricted_join_rule=True,
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restricted_join_rule_fix=True,
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knock_join_rule=True,
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msc3389_relation_redactions=False,
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knock_restricted_join_rule=True,
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enforce_int_power_levels=True,
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msc3931_push_features=(),
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msc3757_enabled=True,
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msc4289_creator_power_enabled=False,
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msc4291_room_ids_as_hashes=False,
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)
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V11 = RoomVersion(
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"11",
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RoomDisposition.STABLE,
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EventFormatVersions.ROOM_V4_PLUS,
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StateResolutionVersions.V2,
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enforce_key_validity=True,
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special_case_aliases_auth=False,
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strict_canonicaljson=True,
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limit_notifications_power_levels=True,
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implicit_room_creator=True, # Used by MSC3820
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updated_redaction_rules=True, # Used by MSC3820
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restricted_join_rule=True,
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restricted_join_rule_fix=True,
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knock_join_rule=True,
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msc3389_relation_redactions=False,
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knock_restricted_join_rule=True,
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enforce_int_power_levels=True,
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msc3931_push_features=(),
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msc3757_enabled=False,
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msc4289_creator_power_enabled=False,
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msc4291_room_ids_as_hashes=False,
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)
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MSC3757v11 = RoomVersion(
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# MSC3757 (Restricting who can overwrite a state event) based on room version "11"
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"org.matrix.msc3757.11",
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RoomDisposition.UNSTABLE,
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EventFormatVersions.ROOM_V4_PLUS,
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StateResolutionVersions.V2,
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enforce_key_validity=True,
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special_case_aliases_auth=False,
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strict_canonicaljson=True,
|
|
limit_notifications_power_levels=True,
|
|
implicit_room_creator=True, # Used by MSC3820
|
|
updated_redaction_rules=True, # Used by MSC3820
|
|
restricted_join_rule=True,
|
|
restricted_join_rule_fix=True,
|
|
knock_join_rule=True,
|
|
msc3389_relation_redactions=False,
|
|
knock_restricted_join_rule=True,
|
|
enforce_int_power_levels=True,
|
|
msc3931_push_features=(),
|
|
msc3757_enabled=True,
|
|
msc4289_creator_power_enabled=False,
|
|
msc4291_room_ids_as_hashes=False,
|
|
)
|
|
HydraV11 = RoomVersion(
|
|
"org.matrix.hydra.11",
|
|
RoomDisposition.UNSTABLE,
|
|
EventFormatVersions.ROOM_V11_HYDRA_PLUS,
|
|
StateResolutionVersions.V2_1, # Changed from v11
|
|
enforce_key_validity=True,
|
|
special_case_aliases_auth=False,
|
|
strict_canonicaljson=True,
|
|
limit_notifications_power_levels=True,
|
|
implicit_room_creator=True, # Used by MSC3820
|
|
updated_redaction_rules=True, # Used by MSC3820
|
|
restricted_join_rule=True,
|
|
restricted_join_rule_fix=True,
|
|
knock_join_rule=True,
|
|
msc3389_relation_redactions=False,
|
|
knock_restricted_join_rule=True,
|
|
enforce_int_power_levels=True,
|
|
msc3931_push_features=(),
|
|
msc3757_enabled=False,
|
|
msc4289_creator_power_enabled=True, # Changed from v11
|
|
msc4291_room_ids_as_hashes=True, # Changed from v11
|
|
)
|
|
V12 = RoomVersion(
|
|
"12",
|
|
RoomDisposition.STABLE,
|
|
EventFormatVersions.ROOM_V11_HYDRA_PLUS,
|
|
StateResolutionVersions.V2_1, # Changed from v11
|
|
enforce_key_validity=True,
|
|
special_case_aliases_auth=False,
|
|
strict_canonicaljson=True,
|
|
limit_notifications_power_levels=True,
|
|
implicit_room_creator=True, # Used by MSC3820
|
|
updated_redaction_rules=True, # Used by MSC3820
|
|
restricted_join_rule=True,
|
|
restricted_join_rule_fix=True,
|
|
knock_join_rule=True,
|
|
msc3389_relation_redactions=False,
|
|
knock_restricted_join_rule=True,
|
|
enforce_int_power_levels=True,
|
|
msc3931_push_features=(),
|
|
msc3757_enabled=False,
|
|
msc4289_creator_power_enabled=True, # Changed from v11
|
|
msc4291_room_ids_as_hashes=True, # Changed from v11
|
|
)
|
|
|
|
|
|
KNOWN_ROOM_VERSIONS: dict[str, RoomVersion] = {
|
|
v.identifier: v
|
|
for v in (
|
|
RoomVersions.V1,
|
|
RoomVersions.V2,
|
|
RoomVersions.V3,
|
|
RoomVersions.V4,
|
|
RoomVersions.V5,
|
|
RoomVersions.V6,
|
|
RoomVersions.V7,
|
|
RoomVersions.V8,
|
|
RoomVersions.V9,
|
|
RoomVersions.V10,
|
|
RoomVersions.V11,
|
|
RoomVersions.V12,
|
|
RoomVersions.MSC3757v10,
|
|
RoomVersions.MSC3757v11,
|
|
RoomVersions.HydraV11,
|
|
)
|
|
}
|
|
|
|
|
|
@attr.s(slots=True, frozen=True, auto_attribs=True)
|
|
class RoomVersionCapability:
|
|
"""An object which describes the unique attributes of a room version."""
|
|
|
|
identifier: str # the identifier for this capability
|
|
preferred_version: RoomVersion | None
|
|
support_check_lambda: Callable[[RoomVersion], bool]
|
|
|
|
|
|
MSC3244_CAPABILITIES = {
|
|
cap.identifier: {
|
|
"preferred": (
|
|
cap.preferred_version.identifier
|
|
if cap.preferred_version is not None
|
|
else None
|
|
),
|
|
"support": [
|
|
v.identifier
|
|
for v in KNOWN_ROOM_VERSIONS.values()
|
|
if cap.support_check_lambda(v)
|
|
],
|
|
}
|
|
for cap in (
|
|
RoomVersionCapability(
|
|
"knock",
|
|
RoomVersions.V7,
|
|
lambda room_version: room_version.knock_join_rule,
|
|
),
|
|
RoomVersionCapability(
|
|
"restricted",
|
|
RoomVersions.V9,
|
|
lambda room_version: room_version.restricted_join_rule,
|
|
),
|
|
)
|
|
}
|