504 lines
19 KiB
Python
504 lines
19 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2017 Vector Creations Ltd
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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
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from twisted.internet import defer
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from synapse.api.errors import HttpResponseException, RequestSendFailed, SynapseError
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from synapse.types import get_domain_from_id
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logger = logging.getLogger(__name__)
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def _create_rerouter(func_name):
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"""Returns a function that looks at the group id and calls the function
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on federation or the local group server if the group is local
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"""
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def f(self, group_id, *args, **kwargs):
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if self.is_mine_id(group_id):
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return getattr(self.groups_server_handler, func_name)(
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group_id, *args, **kwargs
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)
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else:
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destination = get_domain_from_id(group_id)
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d = getattr(self.transport_client, func_name)(
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destination, group_id, *args, **kwargs
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)
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# Capture errors returned by the remote homeserver and
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# re-throw specific errors as SynapseErrors. This is so
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# when the remote end responds with things like 403 Not
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# In Group, we can communicate that to the client instead
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# of a 500.
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def http_response_errback(failure):
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failure.trap(HttpResponseException)
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e = failure.value
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raise e.to_synapse_error()
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def request_failed_errback(failure):
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failure.trap(RequestSendFailed)
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raise SynapseError(502, "Failed to contact group server")
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d.addErrback(http_response_errback)
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d.addErrback(request_failed_errback)
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return d
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return f
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class GroupsLocalHandler(object):
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def __init__(self, hs):
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self.hs = hs
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self.store = hs.get_datastore()
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self.room_list_handler = hs.get_room_list_handler()
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self.groups_server_handler = hs.get_groups_server_handler()
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self.transport_client = hs.get_federation_transport_client()
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self.auth = hs.get_auth()
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self.clock = hs.get_clock()
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self.keyring = hs.get_keyring()
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self.is_mine_id = hs.is_mine_id
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self.signing_key = hs.config.signing_key[0]
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self.server_name = hs.hostname
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self.notifier = hs.get_notifier()
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self.attestations = hs.get_groups_attestation_signing()
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self.profile_handler = hs.get_profile_handler()
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# Ensure attestations get renewed
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hs.get_groups_attestation_renewer()
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# The following functions merely route the query to the local groups server
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# or federation depending on if the group is local or remote
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get_group_profile = _create_rerouter("get_group_profile")
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update_group_profile = _create_rerouter("update_group_profile")
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get_rooms_in_group = _create_rerouter("get_rooms_in_group")
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get_invited_users_in_group = _create_rerouter("get_invited_users_in_group")
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add_room_to_group = _create_rerouter("add_room_to_group")
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update_room_in_group = _create_rerouter("update_room_in_group")
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remove_room_from_group = _create_rerouter("remove_room_from_group")
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update_group_summary_room = _create_rerouter("update_group_summary_room")
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delete_group_summary_room = _create_rerouter("delete_group_summary_room")
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update_group_category = _create_rerouter("update_group_category")
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delete_group_category = _create_rerouter("delete_group_category")
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get_group_category = _create_rerouter("get_group_category")
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get_group_categories = _create_rerouter("get_group_categories")
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update_group_summary_user = _create_rerouter("update_group_summary_user")
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delete_group_summary_user = _create_rerouter("delete_group_summary_user")
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update_group_role = _create_rerouter("update_group_role")
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delete_group_role = _create_rerouter("delete_group_role")
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get_group_role = _create_rerouter("get_group_role")
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get_group_roles = _create_rerouter("get_group_roles")
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set_group_join_policy = _create_rerouter("set_group_join_policy")
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@defer.inlineCallbacks
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def get_group_summary(self, group_id, requester_user_id):
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"""Get the group summary for a group.
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If the group is remote we check that the users have valid attestations.
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"""
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if self.is_mine_id(group_id):
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res = yield self.groups_server_handler.get_group_summary(
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group_id, requester_user_id
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)
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else:
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try:
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res = yield self.transport_client.get_group_summary(
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get_domain_from_id(group_id), group_id, requester_user_id
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)
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except RequestSendFailed:
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raise SynapseError(502, "Failed to contact group server")
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group_server_name = get_domain_from_id(group_id)
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# Loop through the users and validate the attestations.
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chunk = res["users_section"]["users"]
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valid_users = []
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for entry in chunk:
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g_user_id = entry["user_id"]
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attestation = entry.pop("attestation", {})
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try:
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if get_domain_from_id(g_user_id) != group_server_name:
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yield self.attestations.verify_attestation(
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attestation,
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group_id=group_id,
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user_id=g_user_id,
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server_name=get_domain_from_id(g_user_id),
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)
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valid_users.append(entry)
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except Exception as e:
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logger.info("Failed to verify user is in group: %s", e)
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res["users_section"]["users"] = valid_users
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res["users_section"]["users"].sort(key=lambda e: e.get("order", 0))
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res["rooms_section"]["rooms"].sort(key=lambda e: e.get("order", 0))
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# Add `is_publicised` flag to indicate whether the user has publicised their
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# membership of the group on their profile
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result = yield self.store.get_publicised_groups_for_user(requester_user_id)
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is_publicised = group_id in result
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res.setdefault("user", {})["is_publicised"] = is_publicised
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return res
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@defer.inlineCallbacks
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def create_group(self, group_id, user_id, content):
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"""Create a group
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"""
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logger.info("Asking to create group with ID: %r", group_id)
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if self.is_mine_id(group_id):
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res = yield self.groups_server_handler.create_group(
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group_id, user_id, content
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)
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local_attestation = None
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remote_attestation = None
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else:
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local_attestation = self.attestations.create_attestation(group_id, user_id)
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content["attestation"] = local_attestation
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content["user_profile"] = yield self.profile_handler.get_profile(user_id)
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try:
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res = yield self.transport_client.create_group(
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get_domain_from_id(group_id), group_id, user_id, content
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)
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except RequestSendFailed:
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raise SynapseError(502, "Failed to contact group server")
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remote_attestation = res["attestation"]
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yield self.attestations.verify_attestation(
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remote_attestation,
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group_id=group_id,
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user_id=user_id,
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server_name=get_domain_from_id(group_id),
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)
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is_publicised = content.get("publicise", False)
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token = yield self.store.register_user_group_membership(
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group_id,
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user_id,
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membership="join",
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is_admin=True,
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local_attestation=local_attestation,
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remote_attestation=remote_attestation,
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is_publicised=is_publicised,
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)
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self.notifier.on_new_event("groups_key", token, users=[user_id])
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return res
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@defer.inlineCallbacks
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def get_users_in_group(self, group_id, requester_user_id):
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"""Get users in a group
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"""
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if self.is_mine_id(group_id):
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res = yield self.groups_server_handler.get_users_in_group(
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group_id, requester_user_id
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)
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return res
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group_server_name = get_domain_from_id(group_id)
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try:
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res = yield self.transport_client.get_users_in_group(
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get_domain_from_id(group_id), group_id, requester_user_id
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)
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except RequestSendFailed:
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raise SynapseError(502, "Failed to contact group server")
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chunk = res["chunk"]
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valid_entries = []
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for entry in chunk:
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g_user_id = entry["user_id"]
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attestation = entry.pop("attestation", {})
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try:
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if get_domain_from_id(g_user_id) != group_server_name:
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yield self.attestations.verify_attestation(
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attestation,
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group_id=group_id,
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user_id=g_user_id,
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server_name=get_domain_from_id(g_user_id),
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)
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valid_entries.append(entry)
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except Exception as e:
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logger.info("Failed to verify user is in group: %s", e)
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res["chunk"] = valid_entries
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return res
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@defer.inlineCallbacks
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def join_group(self, group_id, user_id, content):
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"""Request to join a group
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"""
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if self.is_mine_id(group_id):
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yield self.groups_server_handler.join_group(group_id, user_id, content)
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local_attestation = None
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remote_attestation = None
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else:
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local_attestation = self.attestations.create_attestation(group_id, user_id)
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content["attestation"] = local_attestation
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try:
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res = yield self.transport_client.join_group(
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get_domain_from_id(group_id), group_id, user_id, content
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)
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except RequestSendFailed:
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raise SynapseError(502, "Failed to contact group server")
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remote_attestation = res["attestation"]
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yield self.attestations.verify_attestation(
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remote_attestation,
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group_id=group_id,
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user_id=user_id,
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server_name=get_domain_from_id(group_id),
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)
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# TODO: Check that the group is public and we're being added publically
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is_publicised = content.get("publicise", False)
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token = yield self.store.register_user_group_membership(
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group_id,
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user_id,
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membership="join",
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is_admin=False,
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local_attestation=local_attestation,
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remote_attestation=remote_attestation,
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is_publicised=is_publicised,
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)
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self.notifier.on_new_event("groups_key", token, users=[user_id])
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return {}
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@defer.inlineCallbacks
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def accept_invite(self, group_id, user_id, content):
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"""Accept an invite to a group
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"""
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if self.is_mine_id(group_id):
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yield self.groups_server_handler.accept_invite(group_id, user_id, content)
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local_attestation = None
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remote_attestation = None
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else:
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local_attestation = self.attestations.create_attestation(group_id, user_id)
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content["attestation"] = local_attestation
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try:
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res = yield self.transport_client.accept_group_invite(
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get_domain_from_id(group_id), group_id, user_id, content
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)
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except RequestSendFailed:
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raise SynapseError(502, "Failed to contact group server")
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remote_attestation = res["attestation"]
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yield self.attestations.verify_attestation(
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remote_attestation,
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group_id=group_id,
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user_id=user_id,
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server_name=get_domain_from_id(group_id),
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)
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# TODO: Check that the group is public and we're being added publically
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is_publicised = content.get("publicise", False)
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token = yield self.store.register_user_group_membership(
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group_id,
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user_id,
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membership="join",
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is_admin=False,
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local_attestation=local_attestation,
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remote_attestation=remote_attestation,
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is_publicised=is_publicised,
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)
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self.notifier.on_new_event("groups_key", token, users=[user_id])
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return {}
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@defer.inlineCallbacks
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def invite(self, group_id, user_id, requester_user_id, config):
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"""Invite a user to a group
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"""
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content = {"requester_user_id": requester_user_id, "config": config}
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if self.is_mine_id(group_id):
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res = yield self.groups_server_handler.invite_to_group(
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group_id, user_id, requester_user_id, content
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)
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else:
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try:
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res = yield self.transport_client.invite_to_group(
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get_domain_from_id(group_id),
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group_id,
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user_id,
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requester_user_id,
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content,
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)
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except RequestSendFailed:
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raise SynapseError(502, "Failed to contact group server")
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return res
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@defer.inlineCallbacks
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def on_invite(self, group_id, user_id, content):
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"""One of our users were invited to a group
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"""
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# TODO: Support auto join and rejection
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if not self.is_mine_id(user_id):
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raise SynapseError(400, "User not on this server")
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local_profile = {}
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if "profile" in content:
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if "name" in content["profile"]:
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local_profile["name"] = content["profile"]["name"]
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if "avatar_url" in content["profile"]:
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local_profile["avatar_url"] = content["profile"]["avatar_url"]
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token = yield self.store.register_user_group_membership(
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group_id,
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user_id,
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membership="invite",
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content={"profile": local_profile, "inviter": content["inviter"]},
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)
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self.notifier.on_new_event("groups_key", token, users=[user_id])
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try:
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user_profile = yield self.profile_handler.get_profile(user_id)
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except Exception as e:
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logger.warn("No profile for user %s: %s", user_id, e)
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user_profile = {}
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return {"state": "invite", "user_profile": user_profile}
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@defer.inlineCallbacks
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def remove_user_from_group(self, group_id, user_id, requester_user_id, content):
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"""Remove a user from a group
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"""
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if user_id == requester_user_id:
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token = yield self.store.register_user_group_membership(
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group_id, user_id, membership="leave"
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)
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self.notifier.on_new_event("groups_key", token, users=[user_id])
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# TODO: Should probably remember that we tried to leave so that we can
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# retry if the group server is currently down.
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if self.is_mine_id(group_id):
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res = yield self.groups_server_handler.remove_user_from_group(
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group_id, user_id, requester_user_id, content
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)
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else:
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content["requester_user_id"] = requester_user_id
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try:
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res = yield self.transport_client.remove_user_from_group(
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get_domain_from_id(group_id),
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group_id,
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requester_user_id,
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user_id,
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content,
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)
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except RequestSendFailed:
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raise SynapseError(502, "Failed to contact group server")
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return res
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@defer.inlineCallbacks
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def user_removed_from_group(self, group_id, user_id, content):
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"""One of our users was removed/kicked from a group
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"""
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# TODO: Check if user in group
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token = yield self.store.register_user_group_membership(
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group_id, user_id, membership="leave"
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)
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self.notifier.on_new_event("groups_key", token, users=[user_id])
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@defer.inlineCallbacks
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def get_joined_groups(self, user_id):
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group_ids = yield self.store.get_joined_groups(user_id)
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return {"groups": group_ids}
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@defer.inlineCallbacks
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def get_publicised_groups_for_user(self, user_id):
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if self.hs.is_mine_id(user_id):
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result = yield self.store.get_publicised_groups_for_user(user_id)
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# Check AS associated groups for this user - this depends on the
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# RegExps in the AS registration file (under `users`)
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for app_service in self.store.get_app_services():
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result.extend(app_service.get_groups_for_user(user_id))
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return {"groups": result}
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else:
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try:
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bulk_result = yield self.transport_client.bulk_get_publicised_groups(
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get_domain_from_id(user_id), [user_id]
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)
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except RequestSendFailed:
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raise SynapseError(502, "Failed to contact group server")
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result = bulk_result.get("users", {}).get(user_id)
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# TODO: Verify attestations
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return {"groups": result}
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@defer.inlineCallbacks
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def bulk_get_publicised_groups(self, user_ids, proxy=True):
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destinations = {}
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local_users = set()
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for user_id in user_ids:
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if self.hs.is_mine_id(user_id):
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local_users.add(user_id)
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else:
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destinations.setdefault(get_domain_from_id(user_id), set()).add(user_id)
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if not proxy and destinations:
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raise SynapseError(400, "Some user_ids are not local")
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results = {}
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failed_results = []
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for destination, dest_user_ids in iteritems(destinations):
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try:
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r = yield self.transport_client.bulk_get_publicised_groups(
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destination, list(dest_user_ids)
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)
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results.update(r["users"])
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except Exception:
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failed_results.extend(dest_user_ids)
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for uid in local_users:
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results[uid] = yield self.store.get_publicised_groups_for_user(uid)
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# Check AS associated groups for this user - this depends on the
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# RegExps in the AS registration file (under `users`)
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for app_service in self.store.get_app_services():
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results[uid].extend(app_service.get_groups_for_user(uid))
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return {"users": results}
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