diff --git a/synapse/config/api.py b/synapse/config/api.py
index 0638ed8d2e..55683200de 100644
--- a/synapse/config/api.py
+++ b/synapse/config/api.py
@@ -1,5 +1,4 @@
-# Copyright 2015, 2016 OpenMarket Ltd
-# Copyright 2020 The Matrix.org Foundation C.I.C.
+# Copyright 2021 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.
@@ -13,42 +12,131 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-from synapse.api.constants import EventTypes
+import logging
+from typing import Iterable
-from ._base import Config
+from synapse.api.constants import EventTypes
+from synapse.config._base import Config, ConfigError
+from synapse.config._util import validate_config
+from synapse.types import JsonDict
-# The default types of room state to send to users to are invited to or knock on a room.
-DEFAULT_ROOM_STATE_TYPES = [
- EventTypes.JoinRules,
- EventTypes.CanonicalAlias,
- EventTypes.RoomAvatar,
- EventTypes.RoomEncryption,
- EventTypes.Name,
-]
+logger = logging.getLogger(__name__)
class ApiConfig(Config):
section = "api"
- def read_config(self, config, **kwargs):
- self.room_invite_state_types = config.get(
- "room_invite_state_types", DEFAULT_ROOM_STATE_TYPES
+ def read_config(self, config: JsonDict, **kwargs):
+ validate_config(_MAIN_SCHEMA, config, ())
+ self.room_prejoin_state = list(self._get_prejoin_state_types(config))
+
+ def generate_config_section(cls, **kwargs) -> str:
+ formatted_default_state_types = "\n".join(
+ " # - %s" % (t,) for t in _DEFAULT_PREJOIN_STATE_TYPES
)
- def generate_config_section(cls, **kwargs):
return """\
## API Configuration ##
- # A list of event types from a room that will be given to users when they
- # are invited to a room. This allows clients to display information about the
- # room that they've been invited to, without actually being in the room yet.
+ # Controls for the state that is shared with users who receive an invite
+ # to a room
#
- #room_invite_state_types:
- # - "{JoinRules}"
- # - "{CanonicalAlias}"
- # - "{RoomAvatar}"
- # - "{RoomEncryption}"
- # - "{Name}"
- """.format(
- **vars(EventTypes)
- )
+ room_prejoin_state:
+ # By default, the following state event types are shared with users who
+ # receive invites to the room:
+ #
+%(formatted_default_state_types)s
+ #
+ # Uncomment the following to disable these defaults (so that only the event
+ # types listed in 'additional_event_types' are shared). Defaults to 'false'.
+ #
+ #disable_default_event_types: true
+
+ # Additional state event types to share with users when they are invited
+ # to a room.
+ #
+ # By default, this list is empty (so only the default event types are shared).
+ #
+ #additional_event_types:
+ # - org.example.custom.event.type
+ """ % {
+ "formatted_default_state_types": formatted_default_state_types
+ }
+
+ def _get_prejoin_state_types(self, config: JsonDict) -> Iterable[str]:
+ """Get the event types to include in the prejoin state
+
+ Parses the config and returns an iterable of the event types to be included.
+ """
+ room_prejoin_state_config = config.get("room_prejoin_state") or {}
+
+ # backwards-compatibility support for room_invite_state_types
+ if "room_invite_state_types" in config:
+ # if both "room_invite_state_types" and "room_prejoin_state" are set, then
+ # we don't really know what to do.
+ if room_prejoin_state_config:
+ raise ConfigError(
+ "Can't specify both 'room_invite_state_types' and 'room_prejoin_state' "
+ "in config"
+ )
+
+ logger.warning(_ROOM_INVITE_STATE_TYPES_WARNING)
+
+ yield from config["room_invite_state_types"]
+ return
+
+ if not room_prejoin_state_config.get("disable_default_event_types"):
+ yield from _DEFAULT_PREJOIN_STATE_TYPES
+
+ if self.spaces_enabled:
+ # MSC1772 suggests adding m.room.create to the prejoin state
+ yield EventTypes.Create
+
+ yield from room_prejoin_state_config.get("additional_event_types", [])
+
+
+_ROOM_INVITE_STATE_TYPES_WARNING = """\
+WARNING: The 'room_invite_state_types' configuration setting is now deprecated,
+and replaced with 'room_prejoin_state'. New features may not work correctly
+unless 'room_invite_state_types' is removed. See the sample configuration file for
+details of 'room_prejoin_state'.
+--------------------------------------------------------------------------------
+"""
+
+_DEFAULT_PREJOIN_STATE_TYPES = [
+ EventTypes.JoinRules,
+ EventTypes.CanonicalAlias,
+ EventTypes.RoomAvatar,
+ EventTypes.RoomEncryption,
+ EventTypes.Name,
+]
+
+
+# room_prejoin_state can either be None (as it is in the default config), or
+# an object containing other config settings
+_ROOM_PREJOIN_STATE_CONFIG_SCHEMA = {
+ "oneOf": [
+ {
+ "type": "object",
+ "properties": {
+ "disable_default_event_types": {"type": "boolean"},
+ "additional_event_types": {
+ "type": "array",
+ "items": {"type": "string"},
+ },
+ },
+ },
+ {"type": "null"},
+ ]
+}
+
+# the legacy room_invite_state_types setting
+_ROOM_INVITE_STATE_TYPES_SCHEMA = {"type": "array", "items": {"type": "string"}}
+
+_MAIN_SCHEMA = {
+ "type": "object",
+ "properties": {
+ "room_prejoin_state": _ROOM_PREJOIN_STATE_CONFIG_SCHEMA,
+ "room_invite_state_types": _ROOM_INVITE_STATE_TYPES_SCHEMA,
+ },
+}
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