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Diffstat (limited to 'synapse/handlers/groups_local.py')
| -rw-r--r-- | synapse/handlers/groups_local.py | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/synapse/handlers/groups_local.py b/synapse/handlers/groups_local.py new file mode 100644 index 0000000000..0b80348c82 --- /dev/null +++ b/synapse/handlers/groups_local.py @@ -0,0 +1,307 @@ +# -*- 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__) + + +# TODO: Validate attestations +# TODO: Allow users to "knock" or simpkly join depending on rules +# TODO: is_priveged flag to users and is_public to users and rooms +# TODO: Roles +# TODO: Audit log for admins (profile updates, membership changes, users who tried +# to join but were rejected, etc) +# TODO: Flairs +# TODO: Add group memebership /sync + + +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.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") + 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, + ) + + yield self.store.register_user_group_membership( + group_id, user_id, + membership="join", + is_admin=False, + local_attestation=local_attestation, + remote_attestation=remote_attestation, + ) + + 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"] + + yield self.store.register_user_group_membership( + group_id, user_id, + membership="invite", + content={"profile": local_profile, "inviter": content["inviter"]}, + ) + + 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: + yield self.store.register_user_group_membership( + group_id, user_id, + membership="leave", + ) + + # 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 + yield self.store.register_user_group_membership( + group_id, user_id, + membership="leave", + ) + + @defer.inlineCallbacks + def get_joined_groups(self, user_id): + group_ids = yield self.store.get_joined_groups(user_id) + defer.returnValue({"groups": group_ids}) |