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#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright 2023 The Matrix.org Foundation C.I.C
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#
from enum import Enum
from http import HTTPStatus
from typing import TYPE_CHECKING
from synapse.api.errors import SynapseError
from synapse.http.servlet import RestServlet, parse_json_object_from_request
from synapse.http.site import SynapseRequest
from synapse.rest.admin import admin_patterns, assert_requester_is_admin
from synapse.types import JsonDict, UserID
if TYPE_CHECKING:
from typing_extensions import assert_never
from synapse.server import HomeServer, HomeServerConfig
class ExperimentalFeature(str, Enum):
"""
Currently supported per-user features
"""
MSC3881 = "msc3881"
MSC3575 = "msc3575"
MSC4222 = "msc4222"
def is_globally_enabled(self, config: "HomeServerConfig") -> bool:
if self is ExperimentalFeature.MSC3881:
return config.experimental.msc3881_enabled
if self is ExperimentalFeature.MSC3575:
return config.experimental.msc3575_enabled
if self is ExperimentalFeature.MSC4222:
return config.experimental.msc4222_enabled
assert_never(self)
class ExperimentalFeaturesRestServlet(RestServlet):
"""
Enable or disable experimental features for a user or determine which features are enabled
for a given user
"""
PATTERNS = admin_patterns("/experimental_features/(?P<user_id>[^/]*)")
def __init__(self, hs: "HomeServer"):
super().__init__()
self.auth = hs.get_auth()
self.store = hs.get_datastores().main
self.is_mine = hs.is_mine
async def on_GET(
self,
request: SynapseRequest,
user_id: str,
) -> tuple[int, JsonDict]:
"""
List which features are enabled for a given user
"""
await assert_requester_is_admin(self.auth, request)
target_user = UserID.from_string(user_id)
if not self.is_mine(target_user):
raise SynapseError(
HTTPStatus.BAD_REQUEST,
"User must be local to check what experimental features are enabled.",
)
enabled_features = await self.store.list_enabled_features(user_id)
user_features = {}
for feature in ExperimentalFeature:
if feature in enabled_features:
user_features[feature.value] = True
else:
user_features[feature.value] = False
return HTTPStatus.OK, {"features": user_features}
async def on_PUT(
self, request: SynapseRequest, user_id: str
) -> tuple[HTTPStatus, dict]:
"""
Enable or disable the provided features for the requester
"""
await assert_requester_is_admin(self.auth, request)
body = parse_json_object_from_request(request)
target_user = UserID.from_string(user_id)
if not self.is_mine(target_user):
raise SynapseError(
HTTPStatus.BAD_REQUEST,
"User must be local to enable experimental features.",
)
features = body.get("features")
if not features:
raise SynapseError(
HTTPStatus.BAD_REQUEST, "You must provide features to set."
)
# validate the provided features
validated_features = {}
for feature, enabled in features.items():
try:
validated_feature = ExperimentalFeature(feature)
validated_features[validated_feature] = enabled
except ValueError:
raise SynapseError(
HTTPStatus.BAD_REQUEST,
f"{feature!r} is not recognised as a valid experimental feature.",
)
await self.store.set_features_for_user(user_id, validated_features)
return HTTPStatus.OK, {}
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