MatrixSynapse/synapse/handlers/groups_local.py

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2017-07-10 15:52:27 +02:00
# -*- 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
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from synapse.types import get_domain_from_id
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import logging
logger = logging.getLogger(__name__)
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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
"""
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def f(self, group_id, *args, **kwargs):
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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else:
destination = get_domain_from_id(group_id)
return getattr(self.transport_client, func_name)(
destination, group_id, *args, **kwargs
)
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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()
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self.transport_client = hs.get_federation_transport_client()
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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
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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
hs.get_groups_attestation_renewer()
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# The following functions merely route the query to the local groups server
# 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")
get_invited_users_in_group = _create_rerouter("get_invited_users_in_group")
update_room_group_association = _create_rerouter("update_room_group_association")
delete_room_group_association = _create_rerouter("delete_room_group_association")
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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):
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"""Get the group summary for a group.
If the group is remote we check that the users have valid attestations.
"""
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if self.is_mine_id(group_id):
res = yield self.groups_server_handler.get_group_summary(
group_id, requester_user_id
)
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else:
res = yield self.transport_client.get_group_summary(
get_domain_from_id(group_id), group_id, requester_user_id,
)
group_server_name = get_domain_from_id(group_id)
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# 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"]
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attestation = entry.pop("attestation", {})
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try:
if get_domain_from_id(g_user_id) != group_server_name:
yield self.attestations.verify_attestation(
attestation,
group_id=group_id,
user_id=g_user_id,
server_name=get_domain_from_id(g_user_id),
)
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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))
# Add `is_publicised` flag to indicate whether the user has publicised their
# membership of the group on their profile
result = yield self.store.get_publicised_groups_for_user(requester_user_id)
is_publicised = group_id in result
res.setdefault("user", {})["is_publicised"] = is_publicised
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defer.returnValue(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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logger.info("Asking to create group with ID: %r", group_id)
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
)
local_attestation = None
remote_attestation = None
else:
local_attestation = self.attestations.create_attestation(group_id, user_id)
content["attestation"] = local_attestation
content["user_profile"] = yield self.profile_handler.get_profile(user_id)
res = yield self.transport_client.create_group(
get_domain_from_id(group_id), group_id, user_id, content,
)
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remote_attestation = res["attestation"]
yield self.attestations.verify_attestation(
remote_attestation,
group_id=group_id,
user_id=user_id,
server_name=get_domain_from_id(group_id),
)
is_publicised = content.get("publicise", False)
token = yield self.store.register_user_group_membership(
group_id, user_id,
membership="join",
is_admin=True,
local_attestation=local_attestation,
remote_attestation=remote_attestation,
is_publicised=is_publicised,
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)
self.notifier.on_new_event(
"groups_key", token, users=[user_id],
)
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defer.returnValue(res)
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@defer.inlineCallbacks
def get_users_in_group(self, group_id, requester_user_id):
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"""Get users in a group
"""
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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)
group_server_name = get_domain_from_id(group_id)
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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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chunk = res["chunk"]
valid_entries = []
for entry in chunk:
g_user_id = entry["user_id"]
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attestation = entry.pop("attestation", {})
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try:
if get_domain_from_id(g_user_id) != group_server_name:
yield self.attestations.verify_attestation(
attestation,
group_id=group_id,
user_id=g_user_id,
server_name=get_domain_from_id(g_user_id),
)
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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):
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"""Request to join a group
"""
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raise NotImplementedError() # TODO
@defer.inlineCallbacks
def accept_invite(self, group_id, user_id, content):
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"""Accept an invite to a group
"""
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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
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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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remote_attestation = res["attestation"]
yield self.attestations.verify_attestation(
remote_attestation,
group_id=group_id,
user_id=user_id,
server_name=get_domain_from_id(group_id),
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)
# TODO: Check that the group is public and we're being added publically
is_publicised = content.get("publicise", False)
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token = yield self.store.register_user_group_membership(
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group_id, user_id,
membership="join",
is_admin=False,
local_attestation=local_attestation,
remote_attestation=remote_attestation,
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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defer.returnValue({})
@defer.inlineCallbacks
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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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:
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res = yield self.transport_client.invite_to_group(
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get_domain_from_id(group_id), group_id, user_id, requester_user_id,
content,
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)
defer.returnValue(res)
@defer.inlineCallbacks
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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# 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"]
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token = yield self.store.register_user_group_membership(
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group_id, user_id,
membership="invite",
content={"profile": local_profile, "inviter": content["inviter"]},
)
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self.notifier.on_new_event(
"groups_key", token, users=[user_id],
)
try:
user_profile = yield self.profile_handler.get_profile(user_id)
except Exception as e:
logger.warn("No profile for user %s: %s", user_id, e)
user_profile = {}
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defer.returnValue({"state": "invite", "user_profile": user_profile})
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@defer.inlineCallbacks
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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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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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
# 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
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res = yield self.transport_client.remove_user_from_group(
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get_domain_from_id(group_id), group_id, requester_user_id,
user_id, content,
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)
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defer.returnValue(res)
@defer.inlineCallbacks
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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# 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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self.notifier.on_new_event(
"groups_key", token, users=[user_id],
)
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@defer.inlineCallbacks
def get_joined_groups(self, user_id):
group_ids = yield self.store.get_joined_groups(user_id)
defer.returnValue({"groups": group_ids})
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@defer.inlineCallbacks
def get_publicised_groups_for_user(self, user_id):
if self.hs.is_mine_id(user_id):
result = yield self.store.get_publicised_groups_for_user(user_id)
defer.returnValue({"groups": result})
else:
result = yield self.transport_client.get_publicised_groups_for_user(
get_domain_from_id(user_id), user_id
)
# TODO: Verify attestations
defer.returnValue(result)
@defer.inlineCallbacks
def bulk_get_publicised_groups(self, user_ids, proxy=True):
destinations = {}
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local_users = set()
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for user_id in user_ids:
if self.hs.is_mine_id(user_id):
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local_users.add(user_id)
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else:
destinations.setdefault(
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get_domain_from_id(user_id), set()
).add(user_id)
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if not proxy and destinations:
raise SynapseError(400, "Some user_ids are not local")
results = {}
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failed_results = []
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for destination, dest_user_ids in destinations.iteritems():
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try:
r = yield self.transport_client.bulk_get_publicised_groups(
destination, list(dest_user_ids),
)
results.update(r["users"])
except Exception:
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
)
defer.returnValue({"users": results})