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# 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.
from typing import Any, Optional
from synapse.config._base import Config
from synapse.config._util import validate_config
from synapse.types import JsonDict
class FederationConfig(Config):
section = "federation"
def read_config(self, config: JsonDict, **kwargs: Any) -> None:
# FIXME: federation_domain_whitelist needs sytests
self.federation_domain_whitelist: Optional[dict] = None
federation_domain_whitelist = config.get("federation_domain_whitelist", None)
if federation_domain_whitelist is not None:
# turn the whitelist into a hash for speed of lookup
self.federation_domain_whitelist = {}
for domain in federation_domain_whitelist:
self.federation_domain_whitelist[domain] = True
federation_metrics_domains = config.get("federation_metrics_domains") or []
validate_config(
_METRICS_FOR_DOMAINS_SCHEMA,
federation_metrics_domains,
("federation_metrics_domains",),
)
self.federation_metrics_domains = set(federation_metrics_domains)
self.allow_profile_lookup_over_federation = config.get(
"allow_profile_lookup_over_federation", True
)
self.allow_device_name_lookup_over_federation = config.get(
"allow_device_name_lookup_over_federation", False
)
def generate_config_section(self, **kwargs: Any) -> str:
return """\
## Federation ##
# Restrict federation to the following whitelist of domains.
# N.B. we recommend also firewalling your federation listener to limit
# inbound federation traffic as early as possible, rather than relying
# purely on this application-layer restriction. If not specified, the
# default is to whitelist everything.
#
#federation_domain_whitelist:
# - lon.example.com
# - nyc.example.com
# - syd.example.com
# Report prometheus metrics on the age of PDUs being sent to and received from
# the following domains. This can be used to give an idea of "delay" on inbound
# and outbound federation, though be aware that any delay can be due to problems
# at either end or with the intermediate network.
#
# By default, no domains are monitored in this way.
#
#federation_metrics_domains:
# - matrix.org
# - example.com
# Uncomment to disable profile lookup over federation. By default, the
# Federation API allows other homeservers to obtain profile data of any user
# on this homeserver. Defaults to 'true'.
#
#allow_profile_lookup_over_federation: false
# Uncomment to allow device display name lookup over federation. By default, the
# Federation API prevents other homeservers from obtaining the display names of
# user devices on this homeserver. Defaults to 'false'.
#
#allow_device_name_lookup_over_federation: true
"""
_METRICS_FOR_DOMAINS_SCHEMA = {"type": "array", "items": {"type": "string"}}
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