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94 lines
4.6 KiB
Python
94 lines
4.6 KiB
Python
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# Copyright 2023 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 logging
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from typing import Awaitable, Callable, List, Optional, Tuple
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from twisted.web.http import Request
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logger = logging.getLogger(__name__)
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# Types for callbacks to be registered via the module api
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IS_USER_EXPIRED_CALLBACK = Callable[[str], Awaitable[Optional[bool]]]
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ON_USER_REGISTRATION_CALLBACK = Callable[[str], Awaitable]
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# Temporary hooks to allow for a transition from `/_matrix/client` endpoints
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# to `/_synapse/client/account_validity`. See `register_callbacks` below.
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ON_LEGACY_SEND_MAIL_CALLBACK = Callable[[str], Awaitable]
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ON_LEGACY_RENEW_CALLBACK = Callable[[str], Awaitable[Tuple[bool, bool, int]]]
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ON_LEGACY_ADMIN_REQUEST = Callable[[Request], Awaitable]
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class AccountValidityModuleApiCallbacks:
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def __init__(self) -> None:
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self.is_user_expired_callbacks: List[IS_USER_EXPIRED_CALLBACK] = []
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self.on_user_registration_callbacks: List[ON_USER_REGISTRATION_CALLBACK] = []
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self.on_legacy_send_mail_callback: Optional[ON_LEGACY_SEND_MAIL_CALLBACK] = None
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self.on_legacy_renew_callback: Optional[ON_LEGACY_RENEW_CALLBACK] = None
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# The legacy admin requests callback isn't a protected attribute because we need
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# to access it from the admin servlet, which is outside of this handler.
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self.on_legacy_admin_request_callback: Optional[ON_LEGACY_ADMIN_REQUEST] = None
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def register_callbacks(
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self,
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is_user_expired: Optional[IS_USER_EXPIRED_CALLBACK] = None,
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on_user_registration: Optional[ON_USER_REGISTRATION_CALLBACK] = None,
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on_legacy_send_mail: Optional[ON_LEGACY_SEND_MAIL_CALLBACK] = None,
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on_legacy_renew: Optional[ON_LEGACY_RENEW_CALLBACK] = None,
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on_legacy_admin_request: Optional[ON_LEGACY_ADMIN_REQUEST] = None,
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) -> None:
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"""Register callbacks from module for each hook."""
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if is_user_expired is not None:
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self.is_user_expired_callbacks.append(is_user_expired)
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if on_user_registration is not None:
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self.on_user_registration_callbacks.append(on_user_registration)
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# The builtin account validity feature exposes 3 endpoints (send_mail, renew, and
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# an admin one). As part of moving the feature into a module, we need to change
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# the path from /_matrix/client/unstable/account_validity/... to
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# /_synapse/client/account_validity, because:
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#
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# * the feature isn't part of the Matrix spec thus shouldn't live under /_matrix
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# * the way we register servlets means that modules can't register resources
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# under /_matrix/client
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#
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# We need to allow for a transition period between the old and new endpoints
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# in order to allow for clients to update (and for emails to be processed).
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#
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# Once the email-account-validity module is loaded, it will take control of account
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# validity by moving the rows from our `account_validity` table into its own table.
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#
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# Therefore, we need to allow modules (in practice just the one implementing the
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# email-based account validity) to temporarily hook into the legacy endpoints so we
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# can route the traffic coming into the old endpoints into the module, which is
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# why we have the following three temporary hooks.
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if on_legacy_send_mail is not None:
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if self.on_legacy_send_mail_callback is not None:
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raise RuntimeError("Tried to register on_legacy_send_mail twice")
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self.on_legacy_send_mail_callback = on_legacy_send_mail
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if on_legacy_renew is not None:
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if self.on_legacy_renew_callback is not None:
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raise RuntimeError("Tried to register on_legacy_renew twice")
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self.on_legacy_renew_callback = on_legacy_renew
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if on_legacy_admin_request is not None:
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if self.on_legacy_admin_request_callback is not None:
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raise RuntimeError("Tried to register on_legacy_admin_request twice")
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self.on_legacy_admin_request_callback = on_legacy_admin_request
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