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82191b08f6
Make it possible to put the URI in the error message and the server notice that get sent by the server
133 lines
4.5 KiB
Python
133 lines
4.5 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2018 New Vector Ltd
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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 six import (iteritems, string_types)
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from twisted.internet import defer
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from synapse.api.errors import SynapseError
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from synapse.api.urls import ConsentURIBuilder
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from synapse.config import ConfigError
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from synapse.types import get_localpart_from_id
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logger = logging.getLogger(__name__)
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class ConsentServerNotices(object):
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"""Keeps track of whether we need to send users server_notices about
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privacy policy consent, and sends one if we do.
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"""
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def __init__(self, hs):
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"""
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Args:
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hs (synapse.server.HomeServer):
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"""
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self._server_notices_manager = hs.get_server_notices_manager()
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self._store = hs.get_datastore()
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self._users_in_progress = set()
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self._current_consent_version = hs.config.user_consent_version
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self._server_notice_content = hs.config.user_consent_server_notice_content
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if self._server_notice_content is not None:
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if not self._server_notices_manager.is_enabled():
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raise ConfigError(
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"user_consent configuration requires server notices, but "
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"server notices are not enabled.",
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)
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if 'body' not in self._server_notice_content:
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raise ConfigError(
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"user_consent server_notice_consent must contain a 'body' "
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"key.",
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)
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self._consent_uri_builder = ConsentURIBuilder(hs.config)
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@defer.inlineCallbacks
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def maybe_send_server_notice_to_user(self, user_id):
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"""Check if we need to send a notice to this user, and does so if so
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Args:
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user_id (str): user to check
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Returns:
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Deferred
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"""
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if self._server_notice_content is None:
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# not enabled
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return
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# make sure we don't send two messages to the same user at once
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if user_id in self._users_in_progress:
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return
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self._users_in_progress.add(user_id)
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try:
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u = yield self._store.get_user_by_id(user_id)
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if u["consent_version"] == self._current_consent_version:
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# user has already consented
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return
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if u["consent_server_notice_sent"] == self._current_consent_version:
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# we've already sent a notice to the user
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return
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# need to send a message.
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try:
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consent_uri = self._consent_uri_builder.build_user_consent_uri(
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get_localpart_from_id(user_id),
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)
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content = copy_with_str_subst(
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self._server_notice_content, {
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'consent_uri': consent_uri,
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},
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)
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yield self._server_notices_manager.send_notice(
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user_id, content,
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)
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yield self._store.user_set_consent_server_notice_sent(
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user_id, self._current_consent_version,
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)
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except SynapseError as e:
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logger.error("Error sending server notice about user consent: %s", e)
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finally:
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self._users_in_progress.remove(user_id)
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def copy_with_str_subst(x, substitutions):
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"""Deep-copy a structure, carrying out string substitions on any strings
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Args:
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x (object): structure to be copied
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substitutions (object): substitutions to be made - passed into the
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string '%' operator
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Returns:
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copy of x
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"""
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if isinstance(x, string_types):
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return x % substitutions
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if isinstance(x, dict):
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return {
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k: copy_with_str_subst(v, substitutions) for (k, v) in iteritems(x)
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}
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if isinstance(x, (list, tuple)):
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return [copy_with_str_subst(y) for y in x]
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# assume it's uninterested and can be shallow-copied.
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return x
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