241 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			Python
		
	
	
			
		
		
	
	
			241 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			Python
		
	
	
# Copyright 2015, 2016 OpenMarket Ltd
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# Copyright 2021 The Matrix.org Foundation C.I.C.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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#     http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import argparse
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import logging
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from typing import Any, Optional
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from synapse.api.constants import RoomCreationPreset
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from synapse.config._base import Config, ConfigError
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from synapse.types import JsonDict, RoomAlias, UserID
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from synapse.util.stringutils import random_string_with_symbols, strtobool
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logger = logging.getLogger(__name__)
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LEGACY_EMAIL_DELEGATE_WARNING = """\
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Delegation of email verification to an identity server is now deprecated. To
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continue to allow users to add email addresses to their accounts, and use them for
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password resets, configure Synapse with an SMTP server via the `email` setting, and
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remove `account_threepid_delegates.email`.
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This will be an error in a future version.
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"""
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class RegistrationConfig(Config):
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    section = "registration"
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    def read_config(self, config: JsonDict, **kwargs: Any) -> None:
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        self.enable_registration = strtobool(
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            str(config.get("enable_registration", False))
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        )
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        if "disable_registration" in config:
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            self.enable_registration = not strtobool(
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                str(config["disable_registration"])
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            )
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        self.enable_registration_without_verification = strtobool(
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            str(config.get("enable_registration_without_verification", False))
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        )
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        self.registrations_require_3pid = config.get("registrations_require_3pid", [])
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        self.allowed_local_3pids = config.get("allowed_local_3pids", [])
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        self.enable_3pid_lookup = config.get("enable_3pid_lookup", True)
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        self.registration_requires_token = config.get(
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            "registration_requires_token", False
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        )
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        self.enable_registration_token_3pid_bypass = config.get(
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            "enable_registration_token_3pid_bypass", False
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        )
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        self.registration_shared_secret = config.get("registration_shared_secret")
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        self.bcrypt_rounds = config.get("bcrypt_rounds", 12)
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        account_threepid_delegates = config.get("account_threepid_delegates") or {}
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        if "email" in account_threepid_delegates:
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            logger.warning(LEGACY_EMAIL_DELEGATE_WARNING)
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        self.account_threepid_delegate_email = account_threepid_delegates.get("email")
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        self.account_threepid_delegate_msisdn = account_threepid_delegates.get("msisdn")
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        self.default_identity_server = config.get("default_identity_server")
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        self.allow_guest_access = config.get("allow_guest_access", False)
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        if config.get("invite_3pid_guest", False):
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            raise ConfigError("invite_3pid_guest is no longer supported")
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        self.auto_join_rooms = config.get("auto_join_rooms", [])
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        for room_alias in self.auto_join_rooms:
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            if not RoomAlias.is_valid(room_alias):
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                raise ConfigError("Invalid auto_join_rooms entry %s" % (room_alias,))
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        # Options for creating auto-join rooms if they do not exist yet.
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        self.autocreate_auto_join_rooms = config.get("autocreate_auto_join_rooms", True)
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        self.autocreate_auto_join_rooms_federated = config.get(
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            "autocreate_auto_join_rooms_federated", True
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        )
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        self.autocreate_auto_join_room_preset = (
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            config.get("autocreate_auto_join_room_preset")
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            or RoomCreationPreset.PUBLIC_CHAT
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        )
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        self.auto_join_room_requires_invite = self.autocreate_auto_join_room_preset in {
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            RoomCreationPreset.PRIVATE_CHAT,
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            RoomCreationPreset.TRUSTED_PRIVATE_CHAT,
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        }
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        # Pull the creator/inviter from the configuration, this gets used to
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        # send invites for invite-only rooms.
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        mxid_localpart = config.get("auto_join_mxid_localpart")
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        self.auto_join_user_id = None
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        if mxid_localpart:
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            # Convert the localpart to a full mxid.
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            self.auto_join_user_id = UserID(
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                mxid_localpart, self.root.server.server_name
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            ).to_string()
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        if self.autocreate_auto_join_rooms:
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            # Ensure the preset is a known value.
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            if self.autocreate_auto_join_room_preset not in {
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                RoomCreationPreset.PUBLIC_CHAT,
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                RoomCreationPreset.PRIVATE_CHAT,
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                RoomCreationPreset.TRUSTED_PRIVATE_CHAT,
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            }:
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                raise ConfigError("Invalid value for autocreate_auto_join_room_preset")
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            # If the preset requires invitations to be sent, ensure there's a
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            # configured user to send them from.
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            if self.auto_join_room_requires_invite:
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                if not mxid_localpart:
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                    raise ConfigError(
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                        "The configuration option `auto_join_mxid_localpart` is required if "
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                        "`autocreate_auto_join_room_preset` is set to private_chat or trusted_private_chat, such that "
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                        "Synapse knows who to send invitations from. Please "
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                        "configure `auto_join_mxid_localpart`."
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                    )
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        self.auto_join_rooms_for_guests = config.get("auto_join_rooms_for_guests", True)
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        self.enable_set_displayname = config.get("enable_set_displayname", True)
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        self.enable_set_avatar_url = config.get("enable_set_avatar_url", True)
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        self.enable_3pid_changes = config.get("enable_3pid_changes", True)
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        self.disable_msisdn_registration = config.get(
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            "disable_msisdn_registration", False
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        )
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        session_lifetime = config.get("session_lifetime")
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        if session_lifetime is not None:
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            session_lifetime = self.parse_duration(session_lifetime)
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        self.session_lifetime = session_lifetime
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        # The `refreshable_access_token_lifetime` applies for tokens that can be renewed
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        # using a refresh token, as per MSC2918.
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        # If it is `None`, the refresh token mechanism is disabled.
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        refreshable_access_token_lifetime = config.get(
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            "refreshable_access_token_lifetime",
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            "5m",
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        )
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        if refreshable_access_token_lifetime is not None:
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            refreshable_access_token_lifetime = self.parse_duration(
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                refreshable_access_token_lifetime
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            )
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        self.refreshable_access_token_lifetime: Optional[
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            int
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        ] = refreshable_access_token_lifetime
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        if (
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            self.session_lifetime is not None
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            and "refreshable_access_token_lifetime" in config
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        ):
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            if self.session_lifetime < self.refreshable_access_token_lifetime:
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                raise ConfigError(
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                    "Both `session_lifetime` and `refreshable_access_token_lifetime` "
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                    "configuration options have been set, but `refreshable_access_token_lifetime` "
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                    " exceeds `session_lifetime`!"
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                )
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        # The `nonrefreshable_access_token_lifetime` applies for tokens that can NOT be
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        # refreshed using a refresh token.
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        # If it is None, then these tokens last for the entire length of the session,
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        # which is infinite by default.
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        # The intention behind this configuration option is to help with requiring
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        # all clients to use refresh tokens, if the homeserver administrator requires.
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        nonrefreshable_access_token_lifetime = config.get(
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            "nonrefreshable_access_token_lifetime",
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            None,
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        )
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        if nonrefreshable_access_token_lifetime is not None:
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            nonrefreshable_access_token_lifetime = self.parse_duration(
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                nonrefreshable_access_token_lifetime
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            )
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        self.nonrefreshable_access_token_lifetime = nonrefreshable_access_token_lifetime
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        if (
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            self.session_lifetime is not None
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            and self.nonrefreshable_access_token_lifetime is not None
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        ):
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            if self.session_lifetime < self.nonrefreshable_access_token_lifetime:
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                raise ConfigError(
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                    "Both `session_lifetime` and `nonrefreshable_access_token_lifetime` "
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                    "configuration options have been set, but `nonrefreshable_access_token_lifetime` "
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                    " exceeds `session_lifetime`!"
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                )
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        refresh_token_lifetime = config.get("refresh_token_lifetime")
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        if refresh_token_lifetime is not None:
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            refresh_token_lifetime = self.parse_duration(refresh_token_lifetime)
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        self.refresh_token_lifetime: Optional[int] = refresh_token_lifetime
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        if (
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            self.session_lifetime is not None
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            and self.refresh_token_lifetime is not None
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        ):
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            if self.session_lifetime < self.refresh_token_lifetime:
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                raise ConfigError(
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                    "Both `session_lifetime` and `refresh_token_lifetime` "
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                    "configuration options have been set, but `refresh_token_lifetime` "
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                    " exceeds `session_lifetime`!"
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                )
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        # The fallback template used for authenticating using a registration token
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        self.registration_token_template = self.read_template("registration_token.html")
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        # The success template used during fallback auth.
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        self.fallback_success_template = self.read_template("auth_success.html")
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        self.inhibit_user_in_use_error = config.get("inhibit_user_in_use_error", False)
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    def generate_config_section(
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        self, generate_secrets: bool = False, **kwargs: Any
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    ) -> str:
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        if generate_secrets:
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            registration_shared_secret = 'registration_shared_secret: "%s"' % (
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                random_string_with_symbols(50),
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            )
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            return registration_shared_secret
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        else:
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            return ""
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    @staticmethod
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    def add_arguments(parser: argparse.ArgumentParser) -> None:
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        reg_group = parser.add_argument_group("registration")
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        reg_group.add_argument(
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            "--enable-registration",
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            action="store_true",
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            default=None,
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            help="Enable registration for new users.",
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        )
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    def read_arguments(self, args: argparse.Namespace) -> None:
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        if args.enable_registration is not None:
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            self.enable_registration = strtobool(str(args.enable_registration))
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