diff options
| -rw-r--r-- | changelog.d/4091.feature | 1 | ||||
| -rw-r--r-- | synapse/api/constants.py | 1 | ||||
| -rw-r--r-- | synapse/handlers/register.py | 6 | ||||
| -rw-r--r-- | synapse/handlers/room.py | 255 | ||||
| -rw-r--r-- | synapse/rest/__init__.py | 2 | ||||
| -rw-r--r-- | synapse/rest/client/v2_alpha/room_upgrade_rest_servlet.py | 89 | ||||
| -rw-r--r-- | synapse/server.pyi | 6 | ||||
| -rw-r--r-- | synapse/storage/room.py | 2 | ||||
| -rw-r--r-- | tests/server_notices/test_resource_limits_server_notices.py | 10 |
9 files changed, 325 insertions, 47 deletions
diff --git a/changelog.d/4091.feature b/changelog.d/4091.feature new file mode 100644 index 0000000000..a3f7dbdcdd --- /dev/null +++ b/changelog.d/4091.feature @@ -0,0 +1 @@ +Support for replacing rooms with new ones diff --git a/synapse/api/constants.py b/synapse/api/constants.py index c2630c4c64..5565e516d6 100644 --- a/synapse/api/constants.py +++ b/synapse/api/constants.py @@ -61,6 +61,7 @@ class LoginType(object): class EventTypes(object): Member = "m.room.member" Create = "m.room.create" + Tombstone = "m.room.tombstone" JoinRules = "m.room.join_rules" PowerLevels = "m.room.power_levels" Aliases = "m.room.aliases" diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py index e9d7b25a36..7b4549223f 100644 --- a/synapse/handlers/register.py +++ b/synapse/handlers/register.py @@ -50,7 +50,6 @@ class RegistrationHandler(BaseHandler): self._auth_handler = hs.get_auth_handler() self.profile_handler = hs.get_profile_handler() self.user_directory_handler = hs.get_user_directory_handler() - self.room_creation_handler = self.hs.get_room_creation_handler() self.captcha_client = CaptchaServerHttpClient(hs) self._next_generated_user_id = None @@ -241,7 +240,10 @@ class RegistrationHandler(BaseHandler): else: # create room expects the localpart of the room alias room_alias_localpart = room_alias.localpart - yield self.room_creation_handler.create_room( + + # getting the RoomCreationHandler during init gives a dependency + # loop + yield self.hs.get_room_creation_handler().create_room( fake_requester, config={ "preset": "public_chat", diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py index 3ba92bdb4c..8e48c1ca6a 100644 --- a/synapse/handlers/room.py +++ b/synapse/handlers/room.py @@ -21,7 +21,7 @@ import math import string from collections import OrderedDict -from six import string_types +from six import iteritems, string_types from twisted.internet import defer @@ -32,10 +32,11 @@ from synapse.api.constants import ( JoinRules, RoomCreationPreset, ) -from synapse.api.errors import AuthError, Codes, StoreError, SynapseError +from synapse.api.errors import AuthError, Codes, NotFoundError, StoreError, SynapseError from synapse.storage.state import StateFilter from synapse.types import RoomAlias, RoomID, RoomStreamToken, StreamToken, UserID from synapse.util import stringutils +from synapse.util.async_helpers import Linearizer from synapse.visibility import filter_events_for_client from ._base import BaseHandler @@ -73,6 +74,190 @@ class RoomCreationHandler(BaseHandler): self.spam_checker = hs.get_spam_checker() self.event_creation_handler = hs.get_event_creation_handler() + self.room_member_handler = hs.get_room_member_handler() + + # linearizer to stop two upgrades happening at once + self._upgrade_linearizer = Linearizer("room_upgrade_linearizer") + + @defer.inlineCallbacks + def upgrade_room(self, requester, old_room_id, new_version): + """Replace a room with a new room with a different version + + Args: + requester (synapse.types.Requester): the user requesting the upgrade + old_room_id (unicode): the id of the room to be replaced + new_version (unicode): the new room version to use + + Returns: + Deferred[unicode]: the new room id + """ + yield self.ratelimit(requester) + + user_id = requester.user.to_string() + + with (yield self._upgrade_linearizer.queue(old_room_id)): + # start by allocating a new room id + r = yield self.store.get_room(old_room_id) + if r is None: + raise NotFoundError("Unknown room id %s" % (old_room_id,)) + new_room_id = yield self._generate_room_id( + creator_id=user_id, is_public=r["is_public"], + ) + + # we create and auth the tombstone event before properly creating the new + # room, to check our user has perms in the old room. + tombstone_event, tombstone_context = ( + yield self.event_creation_handler.create_event( + requester, { + "type": EventTypes.Tombstone, + "state_key": "", + "room_id": old_room_id, + "sender": user_id, + "content": { + "body": "This room has been replaced", + "replacement_room": new_room_id, + } + }, + token_id=requester.access_token_id, + ) + ) + yield self.auth.check_from_context(tombstone_event, tombstone_context) + + yield self.clone_exiting_room( + requester, + old_room_id=old_room_id, + new_room_id=new_room_id, + new_room_version=new_version, + tombstone_event_id=tombstone_event.event_id, + ) + + # now send the tombstone + yield self.event_creation_handler.send_nonmember_event( + requester, tombstone_event, tombstone_context, + ) + + old_room_state = yield tombstone_context.get_current_state_ids(self.store) + old_room_pl_event_id = old_room_state.get((EventTypes.PowerLevels, "")) + + if old_room_pl_event_id is None: + logger.warning( + "Not supported: upgrading a room with no PL event. Not setting PLs " + "in old room.", + ) + else: + # we try to stop regular users from speaking by setting the PL required + # to send regular events and invites to 'Moderator' level. That's normally + # 50, but if the default PL in a room is 50 or more, then we set the + # required PL above that. + + old_room_pl_state = yield self.store.get_event(old_room_pl_event_id) + pl_content = dict(old_room_pl_state.content) + users_default = int(pl_content.get("users_default", 0)) + restricted_level = max(users_default + 1, 50) + + updated = False + for v in ("invite", "events_default"): + current = int(pl_content.get(v, 0)) + if current < restricted_level: + logger.debug( + "Setting level for %s in %s to %i (was %i)", + v, old_room_id, restricted_level, current, + ) + pl_content[v] = restricted_level + updated = True + else: + logger.debug( + "Not setting level for %s (already %i)", + v, current, + ) + + if updated: + yield self.event_creation_handler.create_and_send_nonmember_event( + requester, { + "type": EventTypes.PowerLevels, + "state_key": '', + "room_id": old_room_id, + "sender": user_id, + "content": pl_content, + }, ratelimit=False, + ) + + defer.returnValue(new_room_id) + + @defer.inlineCallbacks + def clone_exiting_room( + self, requester, old_room_id, new_room_id, new_room_version, + tombstone_event_id, + ): + """Populate a new room based on an old room + + Args: + requester (synapse.types.Requester): the user requesting the upgrade + old_room_id (unicode): the id of the room to be replaced + new_room_id (unicode): the id to give the new room (should already have been + created with _gemerate_room_id()) + new_room_version (unicode): the new room version to use + tombstone_event_id (unicode|str): the ID of the tombstone event in the old + room. + Returns: + Deferred[None] + """ + user_id = requester.user.to_string() + + if not self.spam_checker.user_may_create_room(user_id): + raise SynapseError(403, "You are not permitted to create rooms") + + # XXX check alias is free + # canonical_alias = None + + # XXX create association in directory handler + + creation_content = { + "room_version": new_room_version, + "predecessor": { + "room_id": old_room_id, + "event_id": tombstone_event_id, + } + } + + initial_state = dict() + + types_to_copy = ( + (EventTypes.PowerLevels, ""), + (EventTypes.JoinRules, ""), + (EventTypes.Name, ""), + (EventTypes.Topic, ""), + (EventTypes.RoomHistoryVisibility, ""), + (EventTypes.GuestAccess, "") + ) + + old_room_state_ids = yield self.store.get_filtered_current_state_ids( + old_room_id, StateFilter.from_types(types_to_copy), + ) + # map from event_id to BaseEvent + old_room_state_events = yield self.store.get_events(old_room_state_ids.values()) + + for k, old_event_id in iteritems(old_room_state_ids): + old_event = old_room_state_events.get(old_event_id) + if old_event: + initial_state[k] = old_event.content + + yield self._send_events_for_new_room( + requester, + new_room_id, + + # we expect to override all the presets with initial_state, so this is + # somewhat arbitrary. + preset_config=RoomCreationPreset.PRIVATE_CHAT, + + invite_list=[], + initial_state=initial_state, + creation_content=creation_content, + ) + + # XXX invites/joins + # XXX 3pid invites + # XXX directory_handler.send_room_alias_update_event @defer.inlineCallbacks def create_room(self, requester, config, ratelimit=True, @@ -165,28 +350,7 @@ class RoomCreationHandler(BaseHandler): visibility = config.get("visibility", None) is_public = visibility == "public" - # autogen room IDs and try to create it. We may clash, so just - # try a few times till one goes through, giving up eventually. - attempts = 0 - room_id = None - while attempts < 5: - try: - random_string = stringutils.random_string(18) - gen_room_id = RoomID( - random_string, - self.hs.hostname, - ) - yield self.store.store_room( - room_id=gen_room_id.to_string(), - room_creator_user_id=user_id, - is_public=is_public - ) - room_id = gen_room_id.to_string() - break - except StoreError: - attempts += 1 - if not room_id: - raise StoreError(500, "Couldn't generate a room ID.") + room_id = yield self._generate_room_id(creator_id=user_id, is_public=is_public) if room_alias: directory_handler = self.hs.get_handlers().directory_handler @@ -216,18 +380,15 @@ class RoomCreationHandler(BaseHandler): # override any attempt to set room versions via the creation_content creation_content["room_version"] = room_version - room_member_handler = self.hs.get_room_member_handler() - yield self._send_events_for_new_room( requester, room_id, - room_member_handler, preset_config=preset_config, invite_list=invite_list, initial_state=initial_state, creation_content=creation_content, room_alias=room_alias, - power_level_content_override=config.get("power_level_content_override", {}), + power_level_content_override=config.get("power_level_content_override"), creator_join_profile=creator_join_profile, ) @@ -263,7 +424,7 @@ class RoomCreationHandler(BaseHandler): if is_direct: content["is_direct"] = is_direct - yield room_member_handler.update_membership( + yield self.room_member_handler.update_membership( requester, UserID.from_string(invitee), room_id, @@ -301,14 +462,13 @@ class RoomCreationHandler(BaseHandler): self, creator, # A Requester object. room_id, - room_member_handler, preset_config, invite_list, initial_state, creation_content, - room_alias, - power_level_content_override, - creator_join_profile, + room_alias=None, + power_level_content_override=None, + creator_join_profile=None, ): def create(etype, content, **kwargs): e = { @@ -346,7 +506,7 @@ class RoomCreationHandler(BaseHandler): content=creation_content, ) - yield room_member_handler.update_membership( + yield self.room_member_handler.update_membership( creator, creator.user, room_id, @@ -388,7 +548,8 @@ class RoomCreationHandler(BaseHandler): for invitee in invite_list: power_level_content["users"][invitee] = 100 - power_level_content.update(power_level_content_override) + if power_level_content_override: + power_level_content.update(power_level_content_override) yield send( etype=EventTypes.PowerLevels, @@ -427,6 +588,30 @@ class RoomCreationHandler(BaseHandler): content=content, ) + @defer.inlineCallbacks + def _generate_room_id(self, creator_id, is_public): + # autogen room IDs and try to create it. We may clash, so just + # try a few times till one goes through, giving up eventually. + attempts = 0 + while attempts < 5: + try: + random_string = stringutils.random_string(18) + gen_room_id = RoomID( + random_string, + self.hs.hostname, + ).to_string() + if isinstance(gen_room_id, bytes): + gen_room_id = gen_room_id.decode('utf-8') + yield self.store.store_room( + room_id=gen_room_id, + room_creator_user_id=creator_id, + is_public=is_public, + ) + defer.returnValue(gen_room_id) + except StoreError: + attempts += 1 + raise StoreError(500, "Couldn't generate a room ID.") + class RoomContextHandler(object): def __init__(self, hs): diff --git a/synapse/rest/__init__.py b/synapse/rest/__init__.py index 4856822a5d..5f35c2d1be 100644 --- a/synapse/rest/__init__.py +++ b/synapse/rest/__init__.py @@ -47,6 +47,7 @@ from synapse.rest.client.v2_alpha import ( register, report_event, room_keys, + room_upgrade_rest_servlet, sendtodevice, sync, tags, @@ -116,3 +117,4 @@ class ClientRestResource(JsonResource): sendtodevice.register_servlets(hs, client_resource) user_directory.register_servlets(hs, client_resource) groups.register_servlets(hs, client_resource) + room_upgrade_rest_servlet.register_servlets(hs, client_resource) diff --git a/synapse/rest/client/v2_alpha/room_upgrade_rest_servlet.py b/synapse/rest/client/v2_alpha/room_upgrade_rest_servlet.py new file mode 100644 index 0000000000..e6356101fd --- /dev/null +++ b/synapse/rest/client/v2_alpha/room_upgrade_rest_servlet.py @@ -0,0 +1,89 @@ +# -*- coding: utf-8 -*- +# Copyright 2016 OpenMarket 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. + +import logging + +from twisted.internet import defer + +from synapse.api.constants import KNOWN_ROOM_VERSIONS +from synapse.api.errors import Codes, SynapseError +from synapse.http.servlet import ( + RestServlet, + assert_params_in_dict, + parse_json_object_from_request, +) + +from ._base import client_v2_patterns + +logger = logging.getLogger(__name__) + + +class RoomUpgradeRestServlet(RestServlet): + """Handler for room uprade requests. + + Handles requests of the form: + + POST /_matrix/client/r0/rooms/$roomid/upgrade HTTP/1.1 + Content-Type: application/json + + { + "new_version": "2", + } + + Creates a new room and shuts down the old one. Returns the ID of the new room. + + Args: + hs (synapse.server.HomeServer): + """ + PATTERNS = client_v2_patterns( + # /rooms/$roomid/upgrade + "/rooms/(?P<room_id>[^/]*)/upgrade$", + v2_alpha=False, + ) + + def __init__(self, hs): + super(RoomUpgradeRestServlet, self).__init__() + self._hs = hs + self._room_creation_handler = hs.get_room_creation_handler() + self._auth = hs.get_auth() + + @defer.inlineCallbacks + def on_POST(self, request, room_id): + requester = yield self._auth.get_user_by_req(request) + + content = parse_json_object_from_request(request) + assert_params_in_dict(content, ("new_version", )) + new_version = content["new_version"] + + if new_version not in KNOWN_ROOM_VERSIONS: + raise SynapseError( + 400, + "Your homeserver does not support this room version", + Codes.UNSUPPORTED_ROOM_VERSION, + ) + + new_room_id = yield self._room_creation_handler.upgrade_room( + requester, room_id, new_version + ) + + ret = { + "replacement_room": new_room_id, + } + + defer.returnValue((200, ret)) + + +def register_servlets(hs, http_server): + RoomUpgradeRestServlet(hs).register(http_server) diff --git a/synapse/server.pyi b/synapse/server.pyi index ce28486233..06cd083a74 100644 --- a/synapse/server.pyi +++ b/synapse/server.pyi @@ -7,6 +7,9 @@ import synapse.handlers.auth import synapse.handlers.deactivate_account import synapse.handlers.device import synapse.handlers.e2e_keys +import synapse.handlers.room +import synapse.handlers.room_member +import synapse.handlers.message import synapse.handlers.set_password import synapse.rest.media.v1.media_repository import synapse.server_notices.server_notices_manager @@ -50,6 +53,9 @@ class HomeServer(object): def get_room_creation_handler(self) -> synapse.handlers.room.RoomCreationHandler: pass + def get_room_member_handler(self) -> synapse.handlers.room_member.RoomMemberHandler: + pass + def get_event_creation_handler(self) -> synapse.handlers.message.EventCreationHandler: pass diff --git a/synapse/storage/room.py b/synapse/storage/room.py index 61013b8919..41c65e112a 100644 --- a/synapse/storage/room.py +++ b/synapse/storage/room.py @@ -47,7 +47,7 @@ class RoomWorkerStore(SQLBaseStore): Args: room_id (str): The ID of the room to retrieve. Returns: - A namedtuple containing the room information, or an empty list. + A dict containing the room information, or None if the room is unknown. """ return self._simple_select_one( table="rooms", diff --git a/tests/server_notices/test_resource_limits_server_notices.py b/tests/server_notices/test_resource_limits_server_notices.py index 4701eedd45..b1551df7ca 100644 --- a/tests/server_notices/test_resource_limits_server_notices.py +++ b/tests/server_notices/test_resource_limits_server_notices.py @@ -4,7 +4,6 @@ from twisted.internet import defer from synapse.api.constants import EventTypes, ServerNoticeMsgType from synapse.api.errors import ResourceLimitError -from synapse.handlers.auth import AuthHandler from synapse.server_notices.resource_limits_server_notices import ( ResourceLimitsServerNotices, ) @@ -13,17 +12,10 @@ from tests import unittest from tests.utils import setup_test_homeserver -class AuthHandlers(object): - def __init__(self, hs): - self.auth_handler = AuthHandler(hs) - - class TestResourceLimitsServerNotices(unittest.TestCase): @defer.inlineCallbacks def setUp(self): - self.hs = yield setup_test_homeserver(self.addCleanup, handlers=None) - self.hs.handlers = AuthHandlers(self.hs) - self.auth_handler = self.hs.handlers.auth_handler + self.hs = yield setup_test_homeserver(self.addCleanup) self.server_notices_sender = self.hs.get_server_notices_sender() # relying on [1] is far from ideal, but the only case where |