# -*- coding: utf-8 -*- # Copyright 2017 Vector Creations Ltd # # 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. from twisted.internet import defer from synapse.api.errors import SynapseError from synapse.types import get_domain_from_id import logging logger = logging.getLogger(__name__) def _create_rerouter(func_name): """Returns a function that looks at the group id and calls the function on federation or the local group server if the group is local """ def f(self, group_id, *args, **kwargs): if self.is_mine_id(group_id): return getattr(self.groups_server_handler, func_name)( group_id, *args, **kwargs ) else: destination = get_domain_from_id(group_id) return getattr(self.transport_client, func_name)( destination, group_id, *args, **kwargs ) return f class GroupsLocalHandler(object): def __init__(self, hs): self.hs = hs self.store = hs.get_datastore() self.room_list_handler = hs.get_room_list_handler() self.groups_server_handler = hs.get_groups_server_handler() self.transport_client = hs.get_federation_transport_client() self.auth = hs.get_auth() self.clock = hs.get_clock() self.keyring = hs.get_keyring() self.is_mine_id = hs.is_mine_id self.signing_key = hs.config.signing_key[0] self.server_name = hs.hostname self.notifier = hs.get_notifier() self.attestations = hs.get_groups_attestation_signing() # Ensure attestations get renewed hs.get_groups_attestation_renewer() # The following functions merely route the query to the local groups server # or federation depending on if the group is local or remote get_group_profile = _create_rerouter("get_group_profile") update_group_profile = _create_rerouter("update_group_profile") get_rooms_in_group = _create_rerouter("get_rooms_in_group") add_room_to_group = _create_rerouter("add_room_to_group") update_group_summary_room = _create_rerouter("update_group_summary_room") delete_group_summary_room = _create_rerouter("delete_group_summary_room") update_group_category = _create_rerouter("update_group_category") delete_group_category = _create_rerouter("delete_group_category") get_group_category = _create_rerouter("get_group_category") get_group_categories = _create_rerouter("get_group_categories") update_group_summary_user = _create_rerouter("update_group_summary_user") delete_group_summary_user = _create_rerouter("delete_group_summary_user") update_group_role = _create_rerouter("update_group_role") delete_group_role = _create_rerouter("delete_group_role") get_group_role = _create_rerouter("get_group_role") get_group_roles = _create_rerouter("get_group_roles") @defer.inlineCallbacks def get_group_summary(self, group_id, requester_user_id): """Get the group summary for a group. If the group is remote we check that the users have valid attestations. """ if self.is_mine_id(group_id): res = yield self.groups_server_handler.get_group_summary( group_id, requester_user_id ) defer.returnValue(res) res = yield self.transport_client.get_group_summary( get_domain_from_id(group_id), group_id, requester_user_id, ) # Loop through the users and validate the attestations. chunk = res["users_section"]["users"] valid_users = [] for entry in chunk: g_user_id = entry["user_id"] attestation = entry.pop("attestation") try: yield self.attestations.verify_attestation( attestation, group_id=group_id, user_id=g_user_id, ) valid_users.append(entry) except Exception as e: logger.info("Failed to verify user is in group: %s", e) res["users_section"]["users"] = valid_users res["users_section"]["users"].sort(key=lambda e: e.get("order", 0)) res["rooms_section"]["rooms"].sort(key=lambda e: e.get("order", 0)) defer.returnValue(res) def create_group(self, group_id, user_id, content): """Create a group """ logger.info("Asking to create group with ID: %r", group_id) if self.is_mine_id(group_id): return self.groups_server_handler.create_group( group_id, user_id, content ) return self.transport_client.create_group( get_domain_from_id(group_id), group_id, user_id, content, ) # TODO @defer.inlineCallbacks def get_users_in_group(self, group_id, requester_user_id): """Get users in a group """ if self.is_mine_id(group_id): res = yield self.groups_server_handler.get_users_in_group( group_id, requester_user_id ) defer.returnValue(res) res = yield self.transport_client.get_users_in_group( get_domain_from_id(group_id), group_id, requester_user_id, ) chunk = res["chunk"] valid_entries = [] for entry in chunk: g_user_id = entry["user_id"] attestation = entry.pop("attestation") try: yield self.attestations.verify_attestation( attestation, group_id=group_id, user_id=g_user_id, ) valid_entries.append(entry) except Exception as e: logger.info("Failed to verify user is in group: %s", e) res["chunk"] = valid_entries defer.returnValue(res) @defer.inlineCallbacks def join_group(self, group_id, user_id, content): """Request to join a group """ raise NotImplementedError() # TODO @defer.inlineCallbacks def accept_invite(self, group_id, user_id, content): """Accept an invite to a group """ if self.is_mine_id(group_id): yield self.groups_server_handler.accept_invite( group_id, user_id, content ) local_attestation = None remote_attestation = None else: local_attestation = self.attestations.create_attestation(group_id, user_id) content["attestation"] = local_attestation res = yield self.transport_client.accept_group_invite( get_domain_from_id(group_id), group_id, user_id, content, ) remote_attestation = res["attestation"] yield self.attestations.verify_attestation( remote_attestation, group_id=group_id, user_id=user_id, ) token = yield self.store.register_user_group_membership( group_id, user_id, membership="join", is_admin=False, local_attestation=local_attestation, remote_attestation=remote_attestation, ) self.notifier.on_new_event( "groups_key", token, users=[user_id], ) defer.returnValue({}) @defer.inlineCallbacks def invite(self, group_id, user_id, requester_user_id, config): """Invite a user to a group """ content = { "requester_user_id": requester_user_id, "config": config, } if self.is_mine_id(group_id): res = yield self.groups_server_handler.invite_to_group( group_id, user_id, requester_user_id, content, ) else: res = yield self.transport_client.invite_to_group( get_domain_from_id(group_id), group_id, user_id, requester_user_id, content, ) defer.returnValue(res) @defer.inlineCallbacks def on_invite(self, group_id, user_id, content): """One of our users were invited to a group """ # TODO: Support auto join and rejection if not self.is_mine_id(user_id): raise SynapseError(400, "User not on this server") local_profile = {} if "profile" in content: if "name" in content["profile"]: local_profile["name"] = content["profile"]["name"] if "avatar_url" in content["profile"]: local_profile["avatar_url"] = content["profile"]["avatar_url"] token = yield self.store.register_user_group_membership( group_id, user_id, membership="invite", content={"profile": local_profile, "inviter": content["inviter"]}, ) self.notifier.on_new_event( "groups_key", token, users=[user_id], ) defer.returnValue({"state": "invite"}) @defer.inlineCallbacks def remove_user_from_group(self, group_id, user_id, requester_user_id, content): """Remove a user from a group """ if user_id == requester_user_id: token = yield self.store.register_user_group_membership( group_id, user_id, membership="leave", ) self.notifier.on_new_event( "groups_key", token, users=[user_id], ) # TODO: Should probably remember that we tried to leave so that we can # retry if the group server is currently down. if self.is_mine_id(group_id): res = yield self.groups_server_handler.remove_user_from_group( group_id, user_id, requester_user_id, content, ) else: content["requester_user_id"] = requester_user_id res = yield self.transport_client.remove_user_from_group( get_domain_from_id(group_id), group_id, requester_user_id, user_id, content, ) defer.returnValue(res) @defer.inlineCallbacks def user_removed_from_group(self, group_id, user_id, content): """One of our users was removed/kicked from a group """ # TODO: Check if user in group token = yield self.store.register_user_group_membership( group_id, user_id, membership="leave", ) self.notifier.on_new_event( "groups_key", token, users=[user_id], ) @defer.inlineCallbacks def get_joined_groups(self, user_id): group_ids = yield self.store.get_joined_groups(user_id) defer.returnValue({"groups": group_ids})