forked-synapse/synapse/replication/http/membership.py

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2018-03-13 12:32:37 -04:00
# -*- coding: utf-8 -*-
# Copyright 2018 New Vector 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.
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import logging
import re
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from twisted.internet import defer
from synapse.api.errors import SynapseError, MatrixCodeMessageException
from synapse.http.servlet import RestServlet, parse_json_object_from_request
from synapse.types import Requester, UserID
from synapse.util.distributor import user_left_room, user_joined_room
logger = logging.getLogger(__name__)
@defer.inlineCallbacks
def remote_join(client, host, port, requester, remote_room_hosts,
room_id, user_id, content):
"""Ask the master to do a remote join for the given user to the given room
Args:
client (SimpleHttpClient)
host (str): host of master
port (int): port on master listening for HTTP replication
requester (Requester)
remote_room_hosts (list[str]): Servers to try and join via
room_id (str)
user_id (str)
content (dict): The event content to use for the join event
Returns:
Deferred
"""
uri = "http://%s:%s/_synapse/replication/remote_join" % (host, port)
payload = {
"requester": requester.serialize(),
"remote_room_hosts": remote_room_hosts,
"room_id": room_id,
"user_id": user_id,
"content": content,
}
try:
result = yield client.post_json_get_json(uri, payload)
except MatrixCodeMessageException as e:
# We convert to SynapseError as we know that it was a SynapseError
# on the master process that we should send to the client. (And
# importantly, not stack traces everywhere)
raise SynapseError(e.code, e.msg, e.errcode)
defer.returnValue(result)
@defer.inlineCallbacks
def remote_reject_invite(client, host, port, requester, remote_room_hosts,
room_id, user_id):
"""Ask master to reject the invite for the user and room.
Args:
client (SimpleHttpClient)
host (str): host of master
port (int): port on master listening for HTTP replication
requester (Requester)
remote_room_hosts (list[str]): Servers to try and reject via
room_id (str)
user_id (str)
Returns:
Deferred
"""
uri = "http://%s:%s/_synapse/replication/remote_reject_invite" % (host, port)
payload = {
"requester": requester.serialize(),
"remote_room_hosts": remote_room_hosts,
"room_id": room_id,
"user_id": user_id,
}
try:
result = yield client.post_json_get_json(uri, payload)
except MatrixCodeMessageException as e:
# We convert to SynapseError as we know that it was a SynapseError
# on the master process that we should send to the client. (And
# importantly, not stack traces everywhere)
raise SynapseError(e.code, e.msg, e.errcode)
defer.returnValue(result)
@defer.inlineCallbacks
def get_or_register_3pid_guest(client, host, port, requester,
medium, address, inviter_user_id):
"""Ask the master to get/create a guest account for given 3PID.
Args:
client (SimpleHttpClient)
host (str): host of master
port (int): port on master listening for HTTP replication
requester (Requester)
medium (str)
address (str)
inviter_user_id (str): The user ID who is trying to invite the
3PID
Returns:
Deferred[(str, str)]: A 2-tuple of `(user_id, access_token)` of the
3PID guest account.
"""
uri = "http://%s:%s/_synapse/replication/get_or_register_3pid_guest" % (host, port)
payload = {
"requester": requester.serialize(),
"medium": medium,
"address": address,
"inviter_user_id": inviter_user_id,
}
try:
result = yield client.post_json_get_json(uri, payload)
except MatrixCodeMessageException as e:
# We convert to SynapseError as we know that it was a SynapseError
# on the master process that we should send to the client. (And
# importantly, not stack traces everywhere)
raise SynapseError(e.code, e.msg, e.errcode)
defer.returnValue(result)
@defer.inlineCallbacks
def notify_user_membership_change(client, host, port, user_id, room_id, change):
"""Notify master that a user has joined or left the room
Args:
client (SimpleHttpClient)
host (str): host of master
port (int): port on master listening for HTTP replication.
user_id (str)
room_id (str)
change (str): Either "join" or "left"
Returns:
Deferred
"""
assert change in ("joined", "left")
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uri = "http://%s:%s/_synapse/replication/user_%s_room" % (host, port, change)
payload = {
"user_id": user_id,
"room_id": room_id,
}
try:
result = yield client.post_json_get_json(uri, payload)
except MatrixCodeMessageException as e:
# We convert to SynapseError as we know that it was a SynapseError
# on the master process that we should send to the client. (And
# importantly, not stack traces everywhere)
raise SynapseError(e.code, e.msg, e.errcode)
defer.returnValue(result)
class ReplicationRemoteJoinRestServlet(RestServlet):
PATTERNS = [re.compile("^/_synapse/replication/remote_join$")]
def __init__(self, hs):
super(ReplicationRemoteJoinRestServlet, self).__init__()
self.federation_handler = hs.get_handlers().federation_handler
self.store = hs.get_datastore()
self.clock = hs.get_clock()
@defer.inlineCallbacks
def on_POST(self, request):
content = parse_json_object_from_request(request)
remote_room_hosts = content["remote_room_hosts"]
room_id = content["room_id"]
user_id = content["user_id"]
event_content = content["content"]
requester = Requester.deserialize(self.store, content["requester"])
if requester.user:
request.authenticated_entity = requester.user.to_string()
logger.info(
"remote_join: %s into room: %s",
user_id, room_id,
)
yield self.federation_handler.do_invite_join(
remote_room_hosts,
room_id,
user_id,
event_content,
)
defer.returnValue((200, {}))
class ReplicationRemoteRejectInviteRestServlet(RestServlet):
PATTERNS = [re.compile("^/_synapse/replication/remote_reject_invite$")]
def __init__(self, hs):
super(ReplicationRemoteRejectInviteRestServlet, self).__init__()
self.federation_handler = hs.get_handlers().federation_handler
self.store = hs.get_datastore()
self.clock = hs.get_clock()
@defer.inlineCallbacks
def on_POST(self, request):
content = parse_json_object_from_request(request)
remote_room_hosts = content["remote_room_hosts"]
room_id = content["room_id"]
user_id = content["user_id"]
requester = Requester.deserialize(self.store, content["requester"])
if requester.user:
request.authenticated_entity = requester.user.to_string()
logger.info(
"remote_reject_invite: %s out of room: %s",
user_id, room_id,
)
try:
event = yield self.federation_handler.do_remotely_reject_invite(
remote_room_hosts,
room_id,
user_id,
)
ret = event.get_pdu_json()
except Exception as e:
# if we were unable to reject the exception, just mark
# it as rejected on our end and plough ahead.
#
# The 'except' clause is very broad, but we need to
# capture everything from DNS failures upwards
#
logger.warn("Failed to reject invite: %s", e)
yield self.store.locally_reject_invite(
user_id, room_id
)
ret = {}
defer.returnValue((200, ret))
class ReplicationRegister3PIDGuestRestServlet(RestServlet):
PATTERNS = [re.compile("^/_synapse/replication/get_or_register_3pid_guest$")]
def __init__(self, hs):
super(ReplicationRegister3PIDGuestRestServlet, self).__init__()
self.registeration_handler = hs.get_handlers().registration_handler
self.store = hs.get_datastore()
self.clock = hs.get_clock()
@defer.inlineCallbacks
def on_POST(self, request):
content = parse_json_object_from_request(request)
medium = content["medium"]
address = content["address"]
inviter_user_id = content["inviter_user_id"]
requester = Requester.deserialize(self.store, content["requester"])
if requester.user:
request.authenticated_entity = requester.user.to_string()
logger.info("get_or_register_3pid_guest: %r", content)
ret = yield self.registeration_handler.get_or_register_3pid_guest(
medium, address, inviter_user_id,
)
defer.returnValue((200, ret))
class ReplicationUserJoinedLeftRoomRestServlet(RestServlet):
PATTERNS = [re.compile("^/_synapse/replication/user_(?P<change>joined|left)_room$")]
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def __init__(self, hs):
super(ReplicationUserJoinedLeftRoomRestServlet, self).__init__()
self.registeration_handler = hs.get_handlers().registration_handler
self.store = hs.get_datastore()
self.clock = hs.get_clock()
self.distributor = hs.get_distributor()
def on_POST(self, request, change):
content = parse_json_object_from_request(request)
user_id = content["user_id"]
room_id = content["room_id"]
logger.info("user membership change: %s in %s", user_id, room_id)
user = UserID.from_string(user_id)
if change == "joined":
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user_joined_room(self.distributor, user, room_id)
elif change == "left":
user_left_room(self.distributor, user, room_id)
else:
raise Exception("Unrecognized change: %r", change)
return (200, {})
def register_servlets(hs, http_server):
ReplicationRemoteJoinRestServlet(hs).register(http_server)
ReplicationRemoteRejectInviteRestServlet(hs).register(http_server)
ReplicationRegister3PIDGuestRestServlet(hs).register(http_server)
ReplicationUserJoinedLeftRoomRestServlet(hs).register(http_server)