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forked-synapse/synapse/config/server.py
Brendan Abolivier 420484a334
Allow capping a room's retention policy (#8104)
2020-08-24 18:21:04 +01:00

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# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
# Copyright 2017-2018 New Vector Ltd
# Copyright 2019 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 logging
import os.path
import re
from textwrap import indent
from typing import Any, Dict, Iterable, List, Optional
import attr
import yaml
from synapse.api.room_versions import KNOWN_ROOM_VERSIONS
from synapse.http.endpoint import parse_and_validate_server_name
from ._base import Config, ConfigError
logger = logging.Logger(__name__)
# by default, we attempt to listen on both '::' *and* '0.0.0.0' because some OSes
# (Windows, macOS, other BSD/Linux where net.ipv6.bindv6only is set) will only listen
# on IPv6 when '::' is set.
#
# We later check for errors when binding to 0.0.0.0 and ignore them if :: is also in
# in the list.
DEFAULT_BIND_ADDRESSES = ["::", "0.0.0.0"]
DEFAULT_ROOM_VERSION = "5"
ROOM_COMPLEXITY_TOO_GREAT = (
"Your homeserver is unable to join rooms this large or complex. "
"Please speak to your server administrator, or upgrade your instance "
"to join this room."
)
METRICS_PORT_WARNING = """\
The metrics_port configuration option is deprecated in Synapse 0.31 in favour of
a listener. Please see
https://github.com/matrix-org/synapse/blob/master/docs/metrics-howto.md
on how to configure the new listener.
--------------------------------------------------------------------------------"""
KNOWN_LISTENER_TYPES = {
"http",
"metrics",
"manhole",
"replication",
}
KNOWN_RESOURCES = {
"client",
"consent",
"federation",
"keys",
"media",
"metrics",
"openid",
"replication",
"static",
"webclient",
}
@attr.s(frozen=True)
class HttpResourceConfig:
names = attr.ib(
type=List[str],
factory=list,
validator=attr.validators.deep_iterable(attr.validators.in_(KNOWN_RESOURCES)), # type: ignore
)
compress = attr.ib(
type=bool,
default=False,
validator=attr.validators.optional(attr.validators.instance_of(bool)), # type: ignore[arg-type]
)
@attr.s(frozen=True)
class HttpListenerConfig:
"""Object describing the http-specific parts of the config of a listener"""
x_forwarded = attr.ib(type=bool, default=False)
resources = attr.ib(type=List[HttpResourceConfig], factory=list)
additional_resources = attr.ib(type=Dict[str, dict], factory=dict)
tag = attr.ib(type=str, default=None)
@attr.s(frozen=True)
class ListenerConfig:
"""Object describing the configuration of a single listener."""
port = attr.ib(type=int, validator=attr.validators.instance_of(int))
bind_addresses = attr.ib(type=List[str])
type = attr.ib(type=str, validator=attr.validators.in_(KNOWN_LISTENER_TYPES))
tls = attr.ib(type=bool, default=False)
# http_options is only populated if type=http
http_options = attr.ib(type=Optional[HttpListenerConfig], default=None)
class ServerConfig(Config):
section = "server"
def read_config(self, config, **kwargs):
self.server_name = config["server_name"]
self.server_context = config.get("server_context", None)
try:
parse_and_validate_server_name(self.server_name)
except ValueError as e:
raise ConfigError(str(e))
self.pid_file = self.abspath(config.get("pid_file"))
self.web_client_location = config.get("web_client_location", None)
self.soft_file_limit = config.get("soft_file_limit", 0)
self.daemonize = config.get("daemonize")
self.print_pidfile = config.get("print_pidfile")
self.user_agent_suffix = config.get("user_agent_suffix")
self.use_frozen_dicts = config.get("use_frozen_dicts", False)
self.public_baseurl = config.get("public_baseurl")
# Whether to enable user presence.
self.use_presence = config.get("use_presence", True)
# Whether to update the user directory or not. This should be set to
# false only if we are updating the user directory in a worker
self.update_user_directory = config.get("update_user_directory", True)
# whether to enable the media repository endpoints. This should be set
# to false if the media repository is running as a separate endpoint;
# doing so ensures that we will not run cache cleanup jobs on the
# master, potentially causing inconsistency.
self.enable_media_repo = config.get("enable_media_repo", True)
# Whether to require authentication to retrieve profile data (avatars,
# display names) of other users through the client API.
self.require_auth_for_profile_requests = config.get(
"require_auth_for_profile_requests", False
)
# Whether to require sharing a room with a user to retrieve their
# profile data
self.limit_profile_requests_to_users_who_share_rooms = config.get(
"limit_profile_requests_to_users_who_share_rooms", False,
)
if "restrict_public_rooms_to_local_users" in config and (
"allow_public_rooms_without_auth" in config
or "allow_public_rooms_over_federation" in config
):
raise ConfigError(
"Can't use 'restrict_public_rooms_to_local_users' if"
" 'allow_public_rooms_without_auth' and/or"
" 'allow_public_rooms_over_federation' is set."
)
# Check if the legacy "restrict_public_rooms_to_local_users" flag is set. This
# flag is now obsolete but we need to check it for backward-compatibility.
if config.get("restrict_public_rooms_to_local_users", False):
self.allow_public_rooms_without_auth = False
self.allow_public_rooms_over_federation = False
else:
# If set to 'true', removes the need for authentication to access the server's
# public rooms directory through the client API, meaning that anyone can
# query the room directory. Defaults to 'false'.
self.allow_public_rooms_without_auth = config.get(
"allow_public_rooms_without_auth", False
)
# If set to 'true', allows any other homeserver to fetch the server's public
# rooms directory via federation. Defaults to 'false'.
self.allow_public_rooms_over_federation = config.get(
"allow_public_rooms_over_federation", False
)
default_room_version = config.get("default_room_version", DEFAULT_ROOM_VERSION)
# Ensure room version is a str
default_room_version = str(default_room_version)
if default_room_version not in KNOWN_ROOM_VERSIONS:
raise ConfigError(
"Unknown default_room_version: %s, known room versions: %s"
% (default_room_version, list(KNOWN_ROOM_VERSIONS.keys()))
)
# Get the actual room version object rather than just the identifier
self.default_room_version = KNOWN_ROOM_VERSIONS[default_room_version]
# whether to enable search. If disabled, new entries will not be inserted
# into the search tables and they will not be indexed. Users will receive
# errors when attempting to search for messages.
self.enable_search = config.get("enable_search", True)
self.filter_timeline_limit = config.get("filter_timeline_limit", 100)
# Whether we should block invites sent to users on this server
# (other than those sent by local server admins)
self.block_non_admin_invites = config.get("block_non_admin_invites", False)
# Whether to enable experimental MSC1849 (aka relations) support
self.experimental_msc1849_support_enabled = config.get(
"experimental_msc1849_support_enabled", True
)
# Options to control access by tracking MAU
self.limit_usage_by_mau = config.get("limit_usage_by_mau", False)
self.max_mau_value = 0
if self.limit_usage_by_mau:
self.max_mau_value = config.get("max_mau_value", 0)
self.mau_stats_only = config.get("mau_stats_only", False)
self.mau_limits_reserved_threepids = config.get(
"mau_limit_reserved_threepids", []
)
self.mau_trial_days = config.get("mau_trial_days", 0)
self.mau_limit_alerting = config.get("mau_limit_alerting", True)
# How long to keep redacted events in the database in unredacted form
# before redacting them.
redaction_retention_period = config.get("redaction_retention_period", "7d")
if redaction_retention_period is not None:
self.redaction_retention_period = self.parse_duration(
redaction_retention_period
)
else:
self.redaction_retention_period = None
# How long to keep entries in the `users_ips` table.
user_ips_max_age = config.get("user_ips_max_age", "28d")
if user_ips_max_age is not None:
self.user_ips_max_age = self.parse_duration(user_ips_max_age)
else:
self.user_ips_max_age = None
# Options to disable HS
self.hs_disabled = config.get("hs_disabled", False)
self.hs_disabled_message = config.get("hs_disabled_message", "")
# Admin uri to direct users at should their instance become blocked
# due to resource constraints
self.admin_contact = config.get("admin_contact", None)
if self.public_baseurl is not None:
if self.public_baseurl[-1] != "/":
self.public_baseurl += "/"
self.start_pushers = config.get("start_pushers", True)
# (undocumented) option for torturing the worker-mode replication a bit,
# for testing. The value defines the number of milliseconds to pause before
# sending out any replication updates.
self.replication_torture_level = config.get("replication_torture_level")
# Whether to require a user to be in the room to add an alias to it.
# Defaults to True.
self.require_membership_for_aliases = config.get(
"require_membership_for_aliases", True
)
# Whether to allow per-room membership profiles through the send of membership
# events with profile information that differ from the target's global profile.
self.allow_per_room_profiles = config.get("allow_per_room_profiles", True)
retention_config = config.get("retention")
if retention_config is None:
retention_config = {}
self.retention_enabled = retention_config.get("enabled", False)
retention_default_policy = retention_config.get("default_policy")
if retention_default_policy is not None:
self.retention_default_min_lifetime = retention_default_policy.get(
"min_lifetime"
)
if self.retention_default_min_lifetime is not None:
self.retention_default_min_lifetime = self.parse_duration(
self.retention_default_min_lifetime
)
self.retention_default_max_lifetime = retention_default_policy.get(
"max_lifetime"
)
if self.retention_default_max_lifetime is not None:
self.retention_default_max_lifetime = self.parse_duration(
self.retention_default_max_lifetime
)
if (
self.retention_default_min_lifetime is not None
and self.retention_default_max_lifetime is not None
and (
self.retention_default_min_lifetime
> self.retention_default_max_lifetime
)
):
raise ConfigError(
"The default retention policy's 'min_lifetime' can not be greater"
" than its 'max_lifetime'"
)
else:
self.retention_default_min_lifetime = None
self.retention_default_max_lifetime = None
if self.retention_enabled:
logger.info(
"Message retention policies support enabled with the following default"
" policy: min_lifetime = %s ; max_lifetime = %s",
self.retention_default_min_lifetime,
self.retention_default_max_lifetime,
)
self.retention_allowed_lifetime_min = retention_config.get(
"allowed_lifetime_min"
)
if self.retention_allowed_lifetime_min is not None:
self.retention_allowed_lifetime_min = self.parse_duration(
self.retention_allowed_lifetime_min
)
self.retention_allowed_lifetime_max = retention_config.get(
"allowed_lifetime_max"
)
if self.retention_allowed_lifetime_max is not None:
self.retention_allowed_lifetime_max = self.parse_duration(
self.retention_allowed_lifetime_max
)
if (
self.retention_allowed_lifetime_min is not None
and self.retention_allowed_lifetime_max is not None
and self.retention_allowed_lifetime_min
> self.retention_allowed_lifetime_max
):
raise ConfigError(
"Invalid retention policy limits: 'allowed_lifetime_min' can not be"
" greater than 'allowed_lifetime_max'"
)
self.retention_purge_jobs = [] # type: List[Dict[str, Optional[int]]]
for purge_job_config in retention_config.get("purge_jobs", []):
interval_config = purge_job_config.get("interval")
if interval_config is None:
raise ConfigError(
"A retention policy's purge jobs configuration must have the"
" 'interval' key set."
)
interval = self.parse_duration(interval_config)
shortest_max_lifetime = purge_job_config.get("shortest_max_lifetime")
if shortest_max_lifetime is not None:
shortest_max_lifetime = self.parse_duration(shortest_max_lifetime)
longest_max_lifetime = purge_job_config.get("longest_max_lifetime")
if longest_max_lifetime is not None:
longest_max_lifetime = self.parse_duration(longest_max_lifetime)
if (
shortest_max_lifetime is not None
and longest_max_lifetime is not None
and shortest_max_lifetime > longest_max_lifetime
):
raise ConfigError(
"A retention policy's purge jobs configuration's"
" 'shortest_max_lifetime' value can not be greater than its"
" 'longest_max_lifetime' value."
)
self.retention_purge_jobs.append(
{
"interval": interval,
"shortest_max_lifetime": shortest_max_lifetime,
"longest_max_lifetime": longest_max_lifetime,
}
)
if not self.retention_purge_jobs:
self.retention_purge_jobs = [
{
"interval": self.parse_duration("1d"),
"shortest_max_lifetime": None,
"longest_max_lifetime": None,
}
]
self.listeners = [parse_listener_def(x) for x in config.get("listeners", [])]
# no_tls is not really supported any more, but let's grandfather it in
# here.
if config.get("no_tls", False):
l2 = []
for listener in self.listeners:
if listener.tls:
logger.info(
"Ignoring TLS-enabled listener on port %i due to no_tls",
listener.port,
)
else:
l2.append(listener)
self.listeners = l2
if not self.web_client_location:
_warn_if_webclient_configured(self.listeners)
self.gc_thresholds = read_gc_thresholds(config.get("gc_thresholds", None))
@attr.s
class LimitRemoteRoomsConfig(object):
enabled = attr.ib(
validator=attr.validators.instance_of(bool), default=False
)
complexity = attr.ib(
validator=attr.validators.instance_of(
(float, int) # type: ignore[arg-type] # noqa
),
default=1.0,
)
complexity_error = attr.ib(
validator=attr.validators.instance_of(str),
default=ROOM_COMPLEXITY_TOO_GREAT,
)
admins_can_join = attr.ib(
validator=attr.validators.instance_of(bool), default=False
)
self.limit_remote_rooms = LimitRemoteRoomsConfig(
**(config.get("limit_remote_rooms") or {})
)
bind_port = config.get("bind_port")
if bind_port:
if config.get("no_tls", False):
raise ConfigError("no_tls is incompatible with bind_port")
self.listeners = []
bind_host = config.get("bind_host", "")
gzip_responses = config.get("gzip_responses", True)
http_options = HttpListenerConfig(
resources=[
HttpResourceConfig(names=["client"], compress=gzip_responses),
HttpResourceConfig(names=["federation"]),
],
)
self.listeners.append(
ListenerConfig(
port=bind_port,
bind_addresses=[bind_host],
tls=True,
type="http",
http_options=http_options,
)
)
unsecure_port = config.get("unsecure_port", bind_port - 400)
if unsecure_port:
self.listeners.append(
ListenerConfig(
port=unsecure_port,
bind_addresses=[bind_host],
tls=False,
type="http",
http_options=http_options,
)
)
manhole = config.get("manhole")
if manhole:
self.listeners.append(
ListenerConfig(
port=manhole, bind_addresses=["127.0.0.1"], type="manhole",
)
)
metrics_port = config.get("metrics_port")
if metrics_port:
logger.warning(METRICS_PORT_WARNING)
self.listeners.append(
ListenerConfig(
port=metrics_port,
bind_addresses=[config.get("metrics_bind_host", "127.0.0.1")],
type="http",
http_options=HttpListenerConfig(
resources=[HttpResourceConfig(names=["metrics"])]
),
)
)
self.cleanup_extremities_with_dummy_events = config.get(
"cleanup_extremities_with_dummy_events", True
)
# The number of forward extremities in a room needed to send a dummy event.
self.dummy_events_threshold = config.get("dummy_events_threshold", 10)
self.enable_ephemeral_messages = config.get("enable_ephemeral_messages", False)
# Inhibits the /requestToken endpoints from returning an error that might leak
# information about whether an e-mail address is in use or not on this
# homeserver, and instead return a 200 with a fake sid if this kind of error is
# met, without sending anything.
# This is a compromise between sending an email, which could be a spam vector,
# and letting the client know which email address is bound to an account and
# which one isn't.
self.request_token_inhibit_3pid_errors = config.get(
"request_token_inhibit_3pid_errors", False,
)
# List of users trialing the new experimental default push rules. This setting is
# not included in the sample configuration file on purpose as it's a temporary
# hack, so that some users can trial the new defaults without impacting every
# user on the homeserver.
users_new_default_push_rules = (
config.get("users_new_default_push_rules") or []
) # type: list
if not isinstance(users_new_default_push_rules, list):
raise ConfigError("'users_new_default_push_rules' must be a list")
# Turn the list into a set to improve lookup speed.
self.users_new_default_push_rules = set(
users_new_default_push_rules
) # type: set
def has_tls_listener(self) -> bool:
return any(listener.tls for listener in self.listeners)
def generate_config_section(
self, server_name, data_dir_path, open_private_ports, listeners, **kwargs
):
_, bind_port = parse_and_validate_server_name(server_name)
if bind_port is not None:
unsecure_port = bind_port - 400
else:
bind_port = 8448
unsecure_port = 8008
pid_file = os.path.join(data_dir_path, "homeserver.pid")
# Bring DEFAULT_ROOM_VERSION into the local-scope for use in the
# default config string
default_room_version = DEFAULT_ROOM_VERSION
secure_listeners = []
unsecure_listeners = []
private_addresses = ["::1", "127.0.0.1"]
if listeners:
for listener in listeners:
if listener["tls"]:
secure_listeners.append(listener)
else:
# If we don't want open ports we need to bind the listeners
# to some address other than 0.0.0.0. Here we chose to use
# localhost.
# If the addresses are already bound we won't overwrite them
# however.
if not open_private_ports:
listener.setdefault("bind_addresses", private_addresses)
unsecure_listeners.append(listener)
secure_http_bindings = indent(
yaml.dump(secure_listeners), " " * 10
).lstrip()
unsecure_http_bindings = indent(
yaml.dump(unsecure_listeners), " " * 10
).lstrip()
if not unsecure_listeners:
unsecure_http_bindings = (
"""- port: %(unsecure_port)s
tls: false
type: http
x_forwarded: true"""
% locals()
)
if not open_private_ports:
unsecure_http_bindings += (
"\n bind_addresses: ['::1', '127.0.0.1']"
)
unsecure_http_bindings += """
resources:
- names: [client, federation]
compress: false"""
if listeners:
# comment out this block
unsecure_http_bindings = "#" + re.sub(
"\n {10}",
lambda match: match.group(0) + "#",
unsecure_http_bindings,
)
if not secure_listeners:
secure_http_bindings = (
"""#- port: %(bind_port)s
# type: http
# tls: true
# resources:
# - names: [client, federation]"""
% locals()
)
return (
"""\
## Server ##
# The domain name of the server, with optional explicit port.
# This is used by remote servers to connect to this server,
# e.g. matrix.org, localhost:8080, etc.
# This is also the last part of your UserID.
#
server_name: "%(server_name)s"
# When running as a daemon, the file to store the pid in
#
pid_file: %(pid_file)s
# The absolute URL to the web client which /_matrix/client will redirect
# to if 'webclient' is configured under the 'listeners' configuration.
#
# This option can be also set to the filesystem path to the web client
# which will be served at /_matrix/client/ if 'webclient' is configured
# under the 'listeners' configuration, however this is a security risk:
# https://github.com/matrix-org/synapse#security-note
#
#web_client_location: https://riot.example.com/
# The public-facing base URL that clients use to access this HS
# (not including _matrix/...). This is the same URL a user would
# enter into the 'custom HS URL' field on their client. If you
# use synapse with a reverse proxy, this should be the URL to reach
# synapse via the proxy.
#
#public_baseurl: https://example.com/
# Set the soft limit on the number of file descriptors synapse can use
# Zero is used to indicate synapse should set the soft limit to the
# hard limit.
#
#soft_file_limit: 0
# Set to false to disable presence tracking on this homeserver.
#
#use_presence: false
# Whether to require authentication to retrieve profile data (avatars,
# display names) of other users through the client API. Defaults to
# 'false'. Note that profile data is also available via the federation
# API, so this setting is of limited value if federation is enabled on
# the server.
#
#require_auth_for_profile_requests: true
# Uncomment to require a user to share a room with another user in order
# to retrieve their profile information. Only checked on Client-Server
# requests. Profile requests from other servers should be checked by the
# requesting server. Defaults to 'false'.
#
#limit_profile_requests_to_users_who_share_rooms: true
# If set to 'true', removes the need for authentication to access the server's
# public rooms directory through the client API, meaning that anyone can
# query the room directory. Defaults to 'false'.
#
#allow_public_rooms_without_auth: true
# If set to 'true', allows any other homeserver to fetch the server's public
# rooms directory via federation. Defaults to 'false'.
#
#allow_public_rooms_over_federation: true
# The default room version for newly created rooms.
#
# Known room versions are listed here:
# https://matrix.org/docs/spec/#complete-list-of-room-versions
#
# For example, for room version 1, default_room_version should be set
# to "1".
#
#default_room_version: "%(default_room_version)s"
# The GC threshold parameters to pass to `gc.set_threshold`, if defined
#
#gc_thresholds: [700, 10, 10]
# Set the limit on the returned events in the timeline in the get
# and sync operations. The default value is 100. -1 means no upper limit.
#
# Uncomment the following to increase the limit to 5000.
#
#filter_timeline_limit: 5000
# Whether room invites to users on this server should be blocked
# (except those sent by local server admins). The default is False.
#
#block_non_admin_invites: true
# Room searching
#
# If disabled, new messages will not be indexed for searching and users
# will receive errors when searching for messages. Defaults to enabled.
#
#enable_search: false
# List of ports that Synapse should listen on, their purpose and their
# configuration.
#
# Options for each listener include:
#
# port: the TCP port to bind to
#
# bind_addresses: a list of local addresses to listen on. The default is
# 'all local interfaces'.
#
# type: the type of listener. Normally 'http', but other valid options are:
# 'manhole' (see docs/manhole.md),
# 'metrics' (see docs/metrics-howto.md),
# 'replication' (see docs/workers.md).
#
# tls: set to true to enable TLS for this listener. Will use the TLS
# key/cert specified in tls_private_key_path / tls_certificate_path.
#
# x_forwarded: Only valid for an 'http' listener. Set to true to use the
# X-Forwarded-For header as the client IP. Useful when Synapse is
# behind a reverse-proxy.
#
# resources: Only valid for an 'http' listener. A list of resources to host
# on this port. Options for each resource are:
#
# names: a list of names of HTTP resources. See below for a list of
# valid resource names.
#
# compress: set to true to enable HTTP compression for this resource.
#
# additional_resources: Only valid for an 'http' listener. A map of
# additional endpoints which should be loaded via dynamic modules.
#
# Valid resource names are:
#
# client: the client-server API (/_matrix/client), and the synapse admin
# API (/_synapse/admin). Also implies 'media' and 'static'.
#
# consent: user consent forms (/_matrix/consent). See
# docs/consent_tracking.md.
#
# federation: the server-server API (/_matrix/federation). Also implies
# 'media', 'keys', 'openid'
#
# keys: the key discovery API (/_matrix/keys).
#
# media: the media API (/_matrix/media).
#
# metrics: the metrics interface. See docs/metrics-howto.md.
#
# openid: OpenID authentication.
#
# replication: the HTTP replication API (/_synapse/replication). See
# docs/workers.md.
#
# static: static resources under synapse/static (/_matrix/static). (Mostly
# useful for 'fallback authentication'.)
#
# webclient: A web client. Requires web_client_location to be set.
#
listeners:
# TLS-enabled listener: for when matrix traffic is sent directly to synapse.
#
# Disabled by default. To enable it, uncomment the following. (Note that you
# will also need to give Synapse a TLS key and certificate: see the TLS section
# below.)
#
%(secure_http_bindings)s
# Unsecure HTTP listener: for when matrix traffic passes through a reverse proxy
# that unwraps TLS.
#
# If you plan to use a reverse proxy, please see
# https://github.com/matrix-org/synapse/blob/master/docs/reverse_proxy.md.
#
%(unsecure_http_bindings)s
# example additional_resources:
#
#additional_resources:
# "/_matrix/my/custom/endpoint":
# module: my_module.CustomRequestHandler
# config: {}
# Turn on the twisted ssh manhole service on localhost on the given
# port.
#
#- port: 9000
# bind_addresses: ['::1', '127.0.0.1']
# type: manhole
# Forward extremities can build up in a room due to networking delays between
# homeservers. Once this happens in a large room, calculation of the state of
# that room can become quite expensive. To mitigate this, once the number of
# forward extremities reaches a given threshold, Synapse will send an
# org.matrix.dummy_event event, which will reduce the forward extremities
# in the room.
#
# This setting defines the threshold (i.e. number of forward extremities in the
# room) at which dummy events are sent. The default value is 10.
#
#dummy_events_threshold: 5
## Homeserver blocking ##
# How to reach the server admin, used in ResourceLimitError
#
#admin_contact: 'mailto:admin@server.com'
# Global blocking
#
#hs_disabled: false
#hs_disabled_message: 'Human readable reason for why the HS is blocked'
# Monthly Active User Blocking
#
# Used in cases where the admin or server owner wants to limit to the
# number of monthly active users.
#
# 'limit_usage_by_mau' disables/enables monthly active user blocking. When
# enabled and a limit is reached the server returns a 'ResourceLimitError'
# with error type Codes.RESOURCE_LIMIT_EXCEEDED
#
# 'max_mau_value' is the hard limit of monthly active users above which
# the server will start blocking user actions.
#
# 'mau_trial_days' is a means to add a grace period for active users. It
# means that users must be active for this number of days before they
# can be considered active and guards against the case where lots of users
# sign up in a short space of time never to return after their initial
# session.
#
# 'mau_limit_alerting' is a means of limiting client side alerting
# should the mau limit be reached. This is useful for small instances
# where the admin has 5 mau seats (say) for 5 specific people and no
# interest increasing the mau limit further. Defaults to True, which
# means that alerting is enabled
#
#limit_usage_by_mau: false
#max_mau_value: 50
#mau_trial_days: 2
#mau_limit_alerting: false
# If enabled, the metrics for the number of monthly active users will
# be populated, however no one will be limited. If limit_usage_by_mau
# is true, this is implied to be true.
#
#mau_stats_only: false
# Sometimes the server admin will want to ensure certain accounts are
# never blocked by mau checking. These accounts are specified here.
#
#mau_limit_reserved_threepids:
# - medium: 'email'
# address: 'reserved_user@example.com'
# Used by phonehome stats to group together related servers.
#server_context: context
# Resource-constrained homeserver settings
#
# When this is enabled, the room "complexity" will be checked before a user
# joins a new remote room. If it is above the complexity limit, the server will
# disallow joining, or will instantly leave.
#
# Room complexity is an arbitrary measure based on factors such as the number of
# users in the room.
#
limit_remote_rooms:
# Uncomment to enable room complexity checking.
#
#enabled: true
# the limit above which rooms cannot be joined. The default is 1.0.
#
#complexity: 0.5
# override the error which is returned when the room is too complex.
#
#complexity_error: "This room is too complex."
# allow server admins to join complex rooms. Default is false.
#
#admins_can_join: true
# Whether to require a user to be in the room to add an alias to it.
# Defaults to 'true'.
#
#require_membership_for_aliases: false
# Whether to allow per-room membership profiles through the send of membership
# events with profile information that differ from the target's global profile.
# Defaults to 'true'.
#
#allow_per_room_profiles: false
# How long to keep redacted events in unredacted form in the database. After
# this period redacted events get replaced with their redacted form in the DB.
#
# Defaults to `7d`. Set to `null` to disable.
#
#redaction_retention_period: 28d
# How long to track users' last seen time and IPs in the database.
#
# Defaults to `28d`. Set to `null` to disable clearing out of old rows.
#
#user_ips_max_age: 14d
# Message retention policy at the server level.
#
# Room admins and mods can define a retention period for their rooms using the
# 'm.room.retention' state event, and server admins can cap this period by setting
# the 'allowed_lifetime_min' and 'allowed_lifetime_max' config options.
#
# If this feature is enabled, Synapse will regularly look for and purge events
# which are older than the room's maximum retention period. Synapse will also
# filter events received over federation so that events that should have been
# purged are ignored and not stored again.
#
retention:
# The message retention policies feature is disabled by default. Uncomment the
# following line to enable it.
#
#enabled: true
# Default retention policy. If set, Synapse will apply it to rooms that lack the
# 'm.room.retention' state event. Currently, the value of 'min_lifetime' doesn't
# matter much because Synapse doesn't take it into account yet.
#
#default_policy:
# min_lifetime: 1d
# max_lifetime: 1y
# Retention policy limits. If set, and the state of a room contains a
# 'm.room.retention' event in its state which contains a 'min_lifetime' or a
# 'max_lifetime' that's out of these bounds, Synapse will cap the room's policy
# to these limits when running purge jobs.
#
#allowed_lifetime_min: 1d
#allowed_lifetime_max: 1y
# Server admins can define the settings of the background jobs purging the
# events which lifetime has expired under the 'purge_jobs' section.
#
# If no configuration is provided, a single job will be set up to delete expired
# events in every room daily.
#
# Each job's configuration defines which range of message lifetimes the job
# takes care of. For example, if 'shortest_max_lifetime' is '2d' and
# 'longest_max_lifetime' is '3d', the job will handle purging expired events in
# rooms whose state defines a 'max_lifetime' that's both higher than 2 days, and
# lower than or equal to 3 days. Both the minimum and the maximum value of a
# range are optional, e.g. a job with no 'shortest_max_lifetime' and a
# 'longest_max_lifetime' of '3d' will handle every room with a retention policy
# which 'max_lifetime' is lower than or equal to three days.
#
# The rationale for this per-job configuration is that some rooms might have a
# retention policy with a low 'max_lifetime', where history needs to be purged
# of outdated messages on a more frequent basis than for the rest of the rooms
# (e.g. every 12h), but not want that purge to be performed by a job that's
# iterating over every room it knows, which could be heavy on the server.
#
# If any purge job is configured, it is strongly recommended to have at least
# a single job with neither 'shortest_max_lifetime' nor 'longest_max_lifetime'
# set, or one job without 'shortest_max_lifetime' and one job without
# 'longest_max_lifetime' set. Otherwise some rooms might be ignored, even if
# 'allowed_lifetime_min' and 'allowed_lifetime_max' are set, because capping a
# room's policy to these values is done after the policies are retrieved from
# Synapse's database (which is done using the range specified in a purge job's
# configuration).
#
#purge_jobs:
# - longest_max_lifetime: 3d
# interval: 12h
# - shortest_max_lifetime: 3d
# interval: 1d
# Inhibits the /requestToken endpoints from returning an error that might leak
# information about whether an e-mail address is in use or not on this
# homeserver.
# Note that for some endpoints the error situation is the e-mail already being
# used, and for others the error is entering the e-mail being unused.
# If this option is enabled, instead of returning an error, these endpoints will
# act as if no error happened and return a fake session ID ('sid') to clients.
#
#request_token_inhibit_3pid_errors: true
"""
% locals()
)
def read_arguments(self, args):
if args.manhole is not None:
self.manhole = args.manhole
if args.daemonize is not None:
self.daemonize = args.daemonize
if args.print_pidfile is not None:
self.print_pidfile = args.print_pidfile
@staticmethod
def add_arguments(parser):
server_group = parser.add_argument_group("server")
server_group.add_argument(
"-D",
"--daemonize",
action="store_true",
default=None,
help="Daemonize the homeserver",
)
server_group.add_argument(
"--print-pidfile",
action="store_true",
default=None,
help="Print the path to the pidfile just before daemonizing",
)
server_group.add_argument(
"--manhole",
metavar="PORT",
dest="manhole",
type=int,
help="Turn on the twisted telnet manhole service on the given port.",
)
def is_threepid_reserved(reserved_threepids, threepid):
"""Check the threepid against the reserved threepid config
Args:
reserved_threepids([dict]) - list of reserved threepids
threepid(dict) - The threepid to test for
Returns:
boolean Is the threepid undertest reserved_user
"""
for tp in reserved_threepids:
if threepid["medium"] == tp["medium"] and threepid["address"] == tp["address"]:
return True
return False
def read_gc_thresholds(thresholds):
"""Reads the three integer thresholds for garbage collection. Ensures that
the thresholds are integers if thresholds are supplied.
"""
if thresholds is None:
return None
try:
assert len(thresholds) == 3
return (int(thresholds[0]), int(thresholds[1]), int(thresholds[2]))
except Exception:
raise ConfigError(
"Value of `gc_threshold` must be a list of three integers if set"
)
def parse_listener_def(listener: Any) -> ListenerConfig:
"""parse a listener config from the config file"""
listener_type = listener["type"]
port = listener.get("port")
if not isinstance(port, int):
raise ConfigError("Listener configuration is lacking a valid 'port' option")
tls = listener.get("tls", False)
bind_addresses = listener.get("bind_addresses", [])
bind_address = listener.get("bind_address")
# if bind_address was specified, add it to the list of addresses
if bind_address:
bind_addresses.append(bind_address)
# if we still have an empty list of addresses, use the default list
if not bind_addresses:
if listener_type == "metrics":
# the metrics listener doesn't support IPv6
bind_addresses.append("0.0.0.0")
else:
bind_addresses.extend(DEFAULT_BIND_ADDRESSES)
http_config = None
if listener_type == "http":
http_config = HttpListenerConfig(
x_forwarded=listener.get("x_forwarded", False),
resources=[
HttpResourceConfig(**res) for res in listener.get("resources", [])
],
additional_resources=listener.get("additional_resources", {}),
tag=listener.get("tag"),
)
return ListenerConfig(port, bind_addresses, listener_type, tls, http_config)
NO_MORE_WEB_CLIENT_WARNING = """
Synapse no longer includes a web client. To enable a web client, configure
web_client_location. To remove this warning, remove 'webclient' from the 'listeners'
configuration.
"""
def _warn_if_webclient_configured(listeners: Iterable[ListenerConfig]) -> None:
for listener in listeners:
if not listener.http_options:
continue
for res in listener.http_options.resources:
for name in res.names:
if name == "webclient":
logger.warning(NO_MORE_WEB_CLIENT_WARNING)
return
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