forked from MirrorHub/synapse
Merge pull request #679 from matrix-org/erikj/member
Split out RoomMemberHandler
This commit is contained in:
Erik Johnston
commit
fe95943305
3 changed files with 651 additions and 603 deletions
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@ -17,8 +17,9 @@ from synapse.appservice.scheduler import AppServiceScheduler
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from synapse.appservice.api import ApplicationServiceApi
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from .register import RegistrationHandler
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from .room import (
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RoomCreationHandler, RoomMemberHandler, RoomListHandler, RoomContextHandler,
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RoomCreationHandler, RoomListHandler, RoomContextHandler,
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)
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from .room_member import RoomMemberHandler
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from .message import MessageHandler
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from .events import EventStreamHandler, EventHandler
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from .federation import FederationHandler
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@ -18,20 +18,16 @@ from twisted.internet import defer
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from ._base import BaseHandler
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from synapse.types import UserID, RoomAlias, RoomID, RoomStreamToken, Requester
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from synapse.types import UserID, RoomAlias, RoomID, RoomStreamToken
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from synapse.api.constants import (
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EventTypes, Membership, JoinRules, RoomCreationPreset,
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EventTypes, JoinRules, RoomCreationPreset,
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)
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from synapse.api.errors import AuthError, StoreError, SynapseError, Codes
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from synapse.api.errors import AuthError, StoreError, SynapseError
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from synapse.util import stringutils, unwrapFirstError
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from synapse.util.logcontext import preserve_context_over_fn
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from synapse.util.caches.response_cache import ResponseCache
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from signedjson.sign import verify_signed_json
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from signedjson.key import decode_verify_key_bytes
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from collections import OrderedDict
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from unpaddedbase64 import decode_base64
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import logging
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import math
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@ -357,601 +353,6 @@ class RoomCreationHandler(BaseHandler):
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)
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class RoomMemberHandler(BaseHandler):
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# TODO(paul): This handler currently contains a messy conflation of
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# low-level API that works on UserID objects and so on, and REST-level
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# API that takes ID strings and returns pagination chunks. These concerns
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# ought to be separated out a lot better.
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def __init__(self, hs):
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super(RoomMemberHandler, self).__init__(hs)
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self.clock = hs.get_clock()
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self.distributor = hs.get_distributor()
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self.distributor.declare("user_joined_room")
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self.distributor.declare("user_left_room")
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@defer.inlineCallbacks
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def get_room_members(self, room_id):
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users = yield self.store.get_users_in_room(room_id)
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defer.returnValue([UserID.from_string(u) for u in users])
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@defer.inlineCallbacks
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def fetch_room_distributions_into(self, room_id, localusers=None,
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remotedomains=None, ignore_user=None):
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"""Fetch the distribution of a room, adding elements to either
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'localusers' or 'remotedomains', which should be a set() if supplied.
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If ignore_user is set, ignore that user.
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This function returns nothing; its result is performed by the
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side-effect on the two passed sets. This allows easy accumulation of
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member lists of multiple rooms at once if required.
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"""
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members = yield self.get_room_members(room_id)
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for member in members:
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if ignore_user is not None and member == ignore_user:
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continue
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if self.hs.is_mine(member):
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if localusers is not None:
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localusers.add(member)
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else:
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if remotedomains is not None:
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remotedomains.add(member.domain)
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@defer.inlineCallbacks
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def update_membership(
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self,
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requester,
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target,
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room_id,
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action,
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txn_id=None,
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remote_room_hosts=None,
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third_party_signed=None,
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ratelimit=True,
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):
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effective_membership_state = action
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if action in ["kick", "unban"]:
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effective_membership_state = "leave"
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if third_party_signed is not None:
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replication = self.hs.get_replication_layer()
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yield replication.exchange_third_party_invite(
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third_party_signed["sender"],
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target.to_string(),
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room_id,
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third_party_signed,
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)
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msg_handler = self.hs.get_handlers().message_handler
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content = {"membership": effective_membership_state}
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if requester.is_guest:
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content["kind"] = "guest"
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event, context = yield msg_handler.create_event(
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{
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"type": EventTypes.Member,
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"content": content,
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"room_id": room_id,
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"sender": requester.user.to_string(),
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"state_key": target.to_string(),
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# For backwards compatibility:
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"membership": effective_membership_state,
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},
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token_id=requester.access_token_id,
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txn_id=txn_id,
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)
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old_state = context.current_state.get((EventTypes.Member, event.state_key))
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old_membership = old_state.content.get("membership") if old_state else None
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if action == "unban" and old_membership != "ban":
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raise SynapseError(
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403,
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"Cannot unban user who was not banned (membership=%s)" % old_membership,
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errcode=Codes.BAD_STATE
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)
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if old_membership == "ban" and action != "unban":
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raise SynapseError(
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403,
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"Cannot %s user who was is banned" % (action,),
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errcode=Codes.BAD_STATE
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)
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member_handler = self.hs.get_handlers().room_member_handler
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yield member_handler.send_membership_event(
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requester,
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event,
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context,
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ratelimit=ratelimit,
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remote_room_hosts=remote_room_hosts,
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)
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@defer.inlineCallbacks
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def send_membership_event(
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self,
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requester,
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event,
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context,
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remote_room_hosts=None,
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ratelimit=True,
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):
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"""
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Change the membership status of a user in a room.
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Args:
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requester (Requester): The local user who requested the membership
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event. If None, certain checks, like whether this homeserver can
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act as the sender, will be skipped.
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event (SynapseEvent): The membership event.
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context: The context of the event.
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is_guest (bool): Whether the sender is a guest.
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room_hosts ([str]): Homeservers which are likely to already be in
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the room, and could be danced with in order to join this
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homeserver for the first time.
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ratelimit (bool): Whether to rate limit this request.
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Raises:
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SynapseError if there was a problem changing the membership.
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"""
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remote_room_hosts = remote_room_hosts or []
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target_user = UserID.from_string(event.state_key)
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room_id = event.room_id
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if requester is not None:
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sender = UserID.from_string(event.sender)
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assert sender == requester.user, (
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"Sender (%s) must be same as requester (%s)" %
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(sender, requester.user)
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)
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assert self.hs.is_mine(sender), "Sender must be our own: %s" % (sender,)
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else:
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requester = Requester(target_user, None, False)
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message_handler = self.hs.get_handlers().message_handler
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prev_event = message_handler.deduplicate_state_event(event, context)
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if prev_event is not None:
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return
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action = "send"
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if event.membership == Membership.JOIN:
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if requester.is_guest and not self._can_guest_join(context.current_state):
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# This should be an auth check, but guests are a local concept,
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# so don't really fit into the general auth process.
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raise AuthError(403, "Guest access not allowed")
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do_remote_join_dance, remote_room_hosts = self._should_do_dance(
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context,
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(self.get_inviter(event.state_key, context.current_state)),
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remote_room_hosts,
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)
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if do_remote_join_dance:
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action = "remote_join"
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elif event.membership == Membership.LEAVE:
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is_host_in_room = self.is_host_in_room(context.current_state)
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if not is_host_in_room:
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# perhaps we've been invited
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inviter = self.get_inviter(
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target_user.to_string(), context.current_state
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)
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if not inviter:
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raise SynapseError(404, "Not a known room")
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if self.hs.is_mine(inviter):
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# the inviter was on our server, but has now left. Carry on
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# with the normal rejection codepath.
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#
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# This is a bit of a hack, because the room might still be
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# active on other servers.
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pass
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else:
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# send the rejection to the inviter's HS.
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remote_room_hosts = remote_room_hosts + [inviter.domain]
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action = "remote_reject"
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federation_handler = self.hs.get_handlers().federation_handler
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if action == "remote_join":
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if len(remote_room_hosts) == 0:
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raise SynapseError(404, "No known servers")
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# We don't do an auth check if we are doing an invite
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# join dance for now, since we're kinda implicitly checking
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# that we are allowed to join when we decide whether or not we
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# need to do the invite/join dance.
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yield federation_handler.do_invite_join(
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remote_room_hosts,
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event.room_id,
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event.user_id,
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event.content,
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)
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elif action == "remote_reject":
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yield federation_handler.do_remotely_reject_invite(
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remote_room_hosts,
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room_id,
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event.user_id
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)
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else:
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yield self.handle_new_client_event(
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requester,
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event,
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context,
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extra_users=[target_user],
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ratelimit=ratelimit,
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)
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prev_member_event = context.current_state.get(
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(EventTypes.Member, target_user.to_string()),
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None
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)
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if event.membership == Membership.JOIN:
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if not prev_member_event or prev_member_event.membership != Membership.JOIN:
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# Only fire user_joined_room if the user has acutally joined the
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# room. Don't bother if the user is just changing their profile
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# info.
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yield user_joined_room(self.distributor, target_user, room_id)
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elif event.membership == Membership.LEAVE:
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if prev_member_event and prev_member_event.membership == Membership.JOIN:
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user_left_room(self.distributor, target_user, room_id)
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def _can_guest_join(self, current_state):
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"""
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Returns whether a guest can join a room based on its current state.
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"""
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guest_access = current_state.get((EventTypes.GuestAccess, ""), None)
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return (
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guest_access
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and guest_access.content
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and "guest_access" in guest_access.content
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and guest_access.content["guest_access"] == "can_join"
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)
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def _should_do_dance(self, context, inviter, room_hosts=None):
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# TODO: Shouldn't this be remote_room_host?
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room_hosts = room_hosts or []
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is_host_in_room = self.is_host_in_room(context.current_state)
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if is_host_in_room:
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return False, room_hosts
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if inviter and not self.hs.is_mine(inviter):
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room_hosts.append(inviter.domain)
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return True, room_hosts
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@defer.inlineCallbacks
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def lookup_room_alias(self, room_alias):
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"""
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Get the room ID associated with a room alias.
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Args:
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room_alias (RoomAlias): The alias to look up.
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Returns:
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A tuple of:
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The room ID as a RoomID object.
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Hosts likely to be participating in the room ([str]).
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Raises:
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SynapseError if room alias could not be found.
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"""
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directory_handler = self.hs.get_handlers().directory_handler
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mapping = yield directory_handler.get_association(room_alias)
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if not mapping:
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raise SynapseError(404, "No such room alias")
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room_id = mapping["room_id"]
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servers = mapping["servers"]
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defer.returnValue((RoomID.from_string(room_id), servers))
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def get_inviter(self, user_id, current_state):
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prev_state = current_state.get((EventTypes.Member, user_id))
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if prev_state and prev_state.membership == Membership.INVITE:
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return UserID.from_string(prev_state.user_id)
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return None
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@defer.inlineCallbacks
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def get_joined_rooms_for_user(self, user):
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"""Returns a list of roomids that the user has any of the given
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membership states in."""
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rooms = yield self.store.get_rooms_for_user(
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user.to_string(),
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)
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# For some reason the list of events contains duplicates
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# TODO(paul): work out why because I really don't think it should
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room_ids = set(r.room_id for r in rooms)
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defer.returnValue(room_ids)
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@defer.inlineCallbacks
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def do_3pid_invite(
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self,
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room_id,
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inviter,
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medium,
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address,
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id_server,
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requester,
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txn_id
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):
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invitee = yield self._lookup_3pid(
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id_server, medium, address
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)
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if invitee:
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handler = self.hs.get_handlers().room_member_handler
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yield handler.update_membership(
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requester,
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UserID.from_string(invitee),
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room_id,
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"invite",
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txn_id=txn_id,
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)
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else:
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yield self._make_and_store_3pid_invite(
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requester,
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id_server,
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medium,
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address,
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room_id,
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inviter,
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txn_id=txn_id
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)
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@defer.inlineCallbacks
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def _lookup_3pid(self, id_server, medium, address):
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"""Looks up a 3pid in the passed identity server.
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Args:
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id_server (str): The server name (including port, if required)
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of the identity server to use.
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medium (str): The type of the third party identifier (e.g. "email").
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address (str): The third party identifier (e.g. "foo@example.com").
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Returns:
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(str) the matrix ID of the 3pid, or None if it is not recognized.
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"""
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try:
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data = yield self.hs.get_simple_http_client().get_json(
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"%s%s/_matrix/identity/api/v1/lookup" % (id_server_scheme, id_server,),
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{
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"medium": medium,
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"address": address,
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}
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)
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if "mxid" in data:
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if "signatures" not in data:
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raise AuthError(401, "No signatures on 3pid binding")
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self.verify_any_signature(data, id_server)
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defer.returnValue(data["mxid"])
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except IOError as e:
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logger.warn("Error from identity server lookup: %s" % (e,))
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defer.returnValue(None)
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@defer.inlineCallbacks
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def verify_any_signature(self, data, server_hostname):
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if server_hostname not in data["signatures"]:
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raise AuthError(401, "No signature from server %s" % (server_hostname,))
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for key_name, signature in data["signatures"][server_hostname].items():
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key_data = yield self.hs.get_simple_http_client().get_json(
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"%s%s/_matrix/identity/api/v1/pubkey/%s" %
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(id_server_scheme, server_hostname, key_name,),
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)
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if "public_key" not in key_data:
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raise AuthError(401, "No public key named %s from %s" %
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(key_name, server_hostname,))
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verify_signed_json(
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data,
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server_hostname,
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decode_verify_key_bytes(key_name, decode_base64(key_data["public_key"]))
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)
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return
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@defer.inlineCallbacks
|
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def _make_and_store_3pid_invite(
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self,
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requester,
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id_server,
|
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medium,
|
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address,
|
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room_id,
|
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user,
|
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txn_id
|
||||
):
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room_state = yield self.hs.get_state_handler().get_current_state(room_id)
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inviter_display_name = ""
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inviter_avatar_url = ""
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member_event = room_state.get((EventTypes.Member, user.to_string()))
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if member_event:
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inviter_display_name = member_event.content.get("displayname", "")
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inviter_avatar_url = member_event.content.get("avatar_url", "")
|
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canonical_room_alias = ""
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canonical_alias_event = room_state.get((EventTypes.CanonicalAlias, ""))
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if canonical_alias_event:
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canonical_room_alias = canonical_alias_event.content.get("alias", "")
|
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|
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room_name = ""
|
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room_name_event = room_state.get((EventTypes.Name, ""))
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if room_name_event:
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room_name = room_name_event.content.get("name", "")
|
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|
||||
room_join_rules = ""
|
||||
join_rules_event = room_state.get((EventTypes.JoinRules, ""))
|
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if join_rules_event:
|
||||
room_join_rules = join_rules_event.content.get("join_rule", "")
|
||||
|
||||
room_avatar_url = ""
|
||||
room_avatar_event = room_state.get((EventTypes.RoomAvatar, ""))
|
||||
if room_avatar_event:
|
||||
room_avatar_url = room_avatar_event.content.get("url", "")
|
||||
|
||||
token, public_keys, fallback_public_key, display_name = (
|
||||
yield self._ask_id_server_for_third_party_invite(
|
||||
id_server=id_server,
|
||||
medium=medium,
|
||||
address=address,
|
||||
room_id=room_id,
|
||||
inviter_user_id=user.to_string(),
|
||||
room_alias=canonical_room_alias,
|
||||
room_avatar_url=room_avatar_url,
|
||||
room_join_rules=room_join_rules,
|
||||
room_name=room_name,
|
||||
inviter_display_name=inviter_display_name,
|
||||
inviter_avatar_url=inviter_avatar_url
|
||||
)
|
||||
)
|
||||
|
||||
msg_handler = self.hs.get_handlers().message_handler
|
||||
yield msg_handler.create_and_send_nonmember_event(
|
||||
requester,
|
||||
{
|
||||
"type": EventTypes.ThirdPartyInvite,
|
||||
"content": {
|
||||
"display_name": display_name,
|
||||
"public_keys": public_keys,
|
||||
|
||||
# For backwards compatibility:
|
||||
"key_validity_url": fallback_public_key["key_validity_url"],
|
||||
"public_key": fallback_public_key["public_key"],
|
||||
},
|
||||
"room_id": room_id,
|
||||
"sender": user.to_string(),
|
||||
"state_key": token,
|
||||
},
|
||||
txn_id=txn_id,
|
||||
)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _ask_id_server_for_third_party_invite(
|
||||
self,
|
||||
id_server,
|
||||
medium,
|
||||
address,
|
||||
room_id,
|
||||
inviter_user_id,
|
||||
room_alias,
|
||||
room_avatar_url,
|
||||
room_join_rules,
|
||||
room_name,
|
||||
inviter_display_name,
|
||||
inviter_avatar_url
|
||||
):
|
||||
"""
|
||||
Asks an identity server for a third party invite.
|
||||
|
||||
:param id_server (str): hostname + optional port for the identity server.
|
||||
:param medium (str): The literal string "email".
|
||||
:param address (str): The third party address being invited.
|
||||
:param room_id (str): The ID of the room to which the user is invited.
|
||||
:param inviter_user_id (str): The user ID of the inviter.
|
||||
:param room_alias (str): An alias for the room, for cosmetic
|
||||
notifications.
|
||||
:param room_avatar_url (str): The URL of the room's avatar, for cosmetic
|
||||
notifications.
|
||||
:param room_join_rules (str): The join rules of the email
|
||||
(e.g. "public").
|
||||
:param room_name (str): The m.room.name of the room.
|
||||
:param inviter_display_name (str): The current display name of the
|
||||
inviter.
|
||||
:param inviter_avatar_url (str): The URL of the inviter's avatar.
|
||||
|
||||
:return: A deferred tuple containing:
|
||||
token (str): The token which must be signed to prove authenticity.
|
||||
public_keys ([{"public_key": str, "key_validity_url": str}]):
|
||||
public_key is a base64-encoded ed25519 public key.
|
||||
fallback_public_key: One element from public_keys.
|
||||
display_name (str): A user-friendly name to represent the invited
|
||||
user.
|
||||
"""
|
||||
|
||||
is_url = "%s%s/_matrix/identity/api/v1/store-invite" % (
|
||||
id_server_scheme, id_server,
|
||||
)
|
||||
|
||||
invite_config = {
|
||||
"medium": medium,
|
||||
"address": address,
|
||||
"room_id": room_id,
|
||||
"room_alias": room_alias,
|
||||
"room_avatar_url": room_avatar_url,
|
||||
"room_join_rules": room_join_rules,
|
||||
"room_name": room_name,
|
||||
"sender": inviter_user_id,
|
||||
"sender_display_name": inviter_display_name,
|
||||
"sender_avatar_url": inviter_avatar_url,
|
||||
}
|
||||
|
||||
if self.hs.config.invite_3pid_guest:
|
||||
registration_handler = self.hs.get_handlers().registration_handler
|
||||
guest_access_token = yield registration_handler.guest_access_token_for(
|
||||
medium=medium,
|
||||
address=address,
|
||||
inviter_user_id=inviter_user_id,
|
||||
)
|
||||
|
||||
guest_user_info = yield self.hs.get_auth().get_user_by_access_token(
|
||||
guest_access_token
|
||||
)
|
||||
|
||||
invite_config.update({
|
||||
"guest_access_token": guest_access_token,
|
||||
"guest_user_id": guest_user_info["user"].to_string(),
|
||||
})
|
||||
|
||||
data = yield self.hs.get_simple_http_client().post_urlencoded_get_json(
|
||||
is_url,
|
||||
invite_config
|
||||
)
|
||||
# TODO: Check for success
|
||||
token = data["token"]
|
||||
public_keys = data.get("public_keys", [])
|
||||
if "public_key" in data:
|
||||
fallback_public_key = {
|
||||
"public_key": data["public_key"],
|
||||
"key_validity_url": "%s%s/_matrix/identity/api/v1/pubkey/isvalid" % (
|
||||
id_server_scheme, id_server,
|
||||
),
|
||||
}
|
||||
else:
|
||||
fallback_public_key = public_keys[0]
|
||||
|
||||
if not public_keys:
|
||||
public_keys.append(fallback_public_key)
|
||||
display_name = data["display_name"]
|
||||
defer.returnValue((token, public_keys, fallback_public_key, display_name))
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def forget(self, user, room_id):
|
||||
user_id = user.to_string()
|
||||
|
||||
member = yield self.state_handler.get_current_state(
|
||||
room_id=room_id,
|
||||
event_type=EventTypes.Member,
|
||||
state_key=user_id
|
||||
)
|
||||
membership = member.membership if member else None
|
||||
|
||||
if membership is not None and membership != Membership.LEAVE:
|
||||
raise SynapseError(400, "User %s in room %s" % (
|
||||
user_id, room_id
|
||||
))
|
||||
|
||||
if membership:
|
||||
yield self.store.forget(user_id, room_id)
|
||||
|
||||
|
||||
class RoomListHandler(BaseHandler):
|
||||
def __init__(self, hs):
|
||||
super(RoomListHandler, self).__init__(hs)
|
||||
|
|
|
|||
646
synapse/handlers/room_member.py
Normal file
646
synapse/handlers/room_member.py
Normal file
|
|
@ -0,0 +1,646 @@
|
|||
# -*- 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.
|
||||
|
||||
|
||||
from twisted.internet import defer
|
||||
|
||||
from ._base import BaseHandler
|
||||
|
||||
from synapse.types import UserID, RoomID, Requester
|
||||
from synapse.api.constants import (
|
||||
EventTypes, Membership,
|
||||
)
|
||||
from synapse.api.errors import AuthError, SynapseError, Codes
|
||||
from synapse.util.logcontext import preserve_context_over_fn
|
||||
|
||||
from signedjson.sign import verify_signed_json
|
||||
from signedjson.key import decode_verify_key_bytes
|
||||
|
||||
from unpaddedbase64 import decode_base64
|
||||
|
||||
import logging
|
||||
|
||||
logger = logging.getLogger(__name__)
|
||||
|
||||
id_server_scheme = "https://"
|
||||
|
||||
|
||||
def user_left_room(distributor, user, room_id):
|
||||
return preserve_context_over_fn(
|
||||
distributor.fire,
|
||||
"user_left_room", user=user, room_id=room_id
|
||||
)
|
||||
|
||||
|
||||
def user_joined_room(distributor, user, room_id):
|
||||
return preserve_context_over_fn(
|
||||
distributor.fire,
|
||||
"user_joined_room", user=user, room_id=room_id
|
||||
)
|
||||
|
||||
|
||||
class RoomMemberHandler(BaseHandler):
|
||||
# TODO(paul): This handler currently contains a messy conflation of
|
||||
# low-level API that works on UserID objects and so on, and REST-level
|
||||
# API that takes ID strings and returns pagination chunks. These concerns
|
||||
# ought to be separated out a lot better.
|
||||
|
||||
def __init__(self, hs):
|
||||
super(RoomMemberHandler, self).__init__(hs)
|
||||
|
||||
self.clock = hs.get_clock()
|
||||
|
||||
self.distributor = hs.get_distributor()
|
||||
self.distributor.declare("user_joined_room")
|
||||
self.distributor.declare("user_left_room")
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def get_room_members(self, room_id):
|
||||
users = yield self.store.get_users_in_room(room_id)
|
||||
|
||||
defer.returnValue([UserID.from_string(u) for u in users])
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def fetch_room_distributions_into(self, room_id, localusers=None,
|
||||
remotedomains=None, ignore_user=None):
|
||||
"""Fetch the distribution of a room, adding elements to either
|
||||
'localusers' or 'remotedomains', which should be a set() if supplied.
|
||||
If ignore_user is set, ignore that user.
|
||||
|
||||
This function returns nothing; its result is performed by the
|
||||
side-effect on the two passed sets. This allows easy accumulation of
|
||||
member lists of multiple rooms at once if required.
|
||||
"""
|
||||
members = yield self.get_room_members(room_id)
|
||||
for member in members:
|
||||
if ignore_user is not None and member == ignore_user:
|
||||
continue
|
||||
|
||||
if self.hs.is_mine(member):
|
||||
if localusers is not None:
|
||||
localusers.add(member)
|
||||
else:
|
||||
if remotedomains is not None:
|
||||
remotedomains.add(member.domain)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def update_membership(
|
||||
self,
|
||||
requester,
|
||||
target,
|
||||
room_id,
|
||||
action,
|
||||
txn_id=None,
|
||||
remote_room_hosts=None,
|
||||
third_party_signed=None,
|
||||
ratelimit=True,
|
||||
):
|
||||
effective_membership_state = action
|
||||
if action in ["kick", "unban"]:
|
||||
effective_membership_state = "leave"
|
||||
|
||||
if third_party_signed is not None:
|
||||
replication = self.hs.get_replication_layer()
|
||||
yield replication.exchange_third_party_invite(
|
||||
third_party_signed["sender"],
|
||||
target.to_string(),
|
||||
room_id,
|
||||
third_party_signed,
|
||||
)
|
||||
|
||||
msg_handler = self.hs.get_handlers().message_handler
|
||||
|
||||
content = {"membership": effective_membership_state}
|
||||
if requester.is_guest:
|
||||
content["kind"] = "guest"
|
||||
|
||||
event, context = yield msg_handler.create_event(
|
||||
{
|
||||
"type": EventTypes.Member,
|
||||
"content": content,
|
||||
"room_id": room_id,
|
||||
"sender": requester.user.to_string(),
|
||||
"state_key": target.to_string(),
|
||||
|
||||
# For backwards compatibility:
|
||||
"membership": effective_membership_state,
|
||||
},
|
||||
token_id=requester.access_token_id,
|
||||
txn_id=txn_id,
|
||||
)
|
||||
|
||||
old_state = context.current_state.get((EventTypes.Member, event.state_key))
|
||||
old_membership = old_state.content.get("membership") if old_state else None
|
||||
if action == "unban" and old_membership != "ban":
|
||||
raise SynapseError(
|
||||
403,
|
||||
"Cannot unban user who was not banned (membership=%s)" % old_membership,
|
||||
errcode=Codes.BAD_STATE
|
||||
)
|
||||
if old_membership == "ban" and action != "unban":
|
||||
raise SynapseError(
|
||||
403,
|
||||
"Cannot %s user who was is banned" % (action,),
|
||||
errcode=Codes.BAD_STATE
|
||||
)
|
||||
|
||||
member_handler = self.hs.get_handlers().room_member_handler
|
||||
yield member_handler.send_membership_event(
|
||||
requester,
|
||||
event,
|
||||
context,
|
||||
ratelimit=ratelimit,
|
||||
remote_room_hosts=remote_room_hosts,
|
||||
)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def send_membership_event(
|
||||
self,
|
||||
requester,
|
||||
event,
|
||||
context,
|
||||
remote_room_hosts=None,
|
||||
ratelimit=True,
|
||||
):
|
||||
"""
|
||||
Change the membership status of a user in a room.
|
||||
|
||||
Args:
|
||||
requester (Requester): The local user who requested the membership
|
||||
event. If None, certain checks, like whether this homeserver can
|
||||
act as the sender, will be skipped.
|
||||
event (SynapseEvent): The membership event.
|
||||
context: The context of the event.
|
||||
is_guest (bool): Whether the sender is a guest.
|
||||
room_hosts ([str]): Homeservers which are likely to already be in
|
||||
the room, and could be danced with in order to join this
|
||||
homeserver for the first time.
|
||||
ratelimit (bool): Whether to rate limit this request.
|
||||
Raises:
|
||||
SynapseError if there was a problem changing the membership.
|
||||
"""
|
||||
remote_room_hosts = remote_room_hosts or []
|
||||
|
||||
target_user = UserID.from_string(event.state_key)
|
||||
room_id = event.room_id
|
||||
|
||||
if requester is not None:
|
||||
sender = UserID.from_string(event.sender)
|
||||
assert sender == requester.user, (
|
||||
"Sender (%s) must be same as requester (%s)" %
|
||||
(sender, requester.user)
|
||||
)
|
||||
assert self.hs.is_mine(sender), "Sender must be our own: %s" % (sender,)
|
||||
else:
|
||||
requester = Requester(target_user, None, False)
|
||||
|
||||
message_handler = self.hs.get_handlers().message_handler
|
||||
prev_event = message_handler.deduplicate_state_event(event, context)
|
||||
if prev_event is not None:
|
||||
return
|
||||
|
||||
action = "send"
|
||||
|
||||
if event.membership == Membership.JOIN:
|
||||
if requester.is_guest and not self._can_guest_join(context.current_state):
|
||||
# This should be an auth check, but guests are a local concept,
|
||||
# so don't really fit into the general auth process.
|
||||
raise AuthError(403, "Guest access not allowed")
|
||||
do_remote_join_dance, remote_room_hosts = self._should_do_dance(
|
||||
context,
|
||||
(self.get_inviter(event.state_key, context.current_state)),
|
||||
remote_room_hosts,
|
||||
)
|
||||
if do_remote_join_dance:
|
||||
action = "remote_join"
|
||||
elif event.membership == Membership.LEAVE:
|
||||
is_host_in_room = self.is_host_in_room(context.current_state)
|
||||
|
||||
if not is_host_in_room:
|
||||
# perhaps we've been invited
|
||||
inviter = self.get_inviter(
|
||||
target_user.to_string(), context.current_state
|
||||
)
|
||||
if not inviter:
|
||||
raise SynapseError(404, "Not a known room")
|
||||
|
||||
if self.hs.is_mine(inviter):
|
||||
# the inviter was on our server, but has now left. Carry on
|
||||
# with the normal rejection codepath.
|
||||
#
|
||||
# This is a bit of a hack, because the room might still be
|
||||
# active on other servers.
|
||||
pass
|
||||
else:
|
||||
# send the rejection to the inviter's HS.
|
||||
remote_room_hosts = remote_room_hosts + [inviter.domain]
|
||||
action = "remote_reject"
|
||||
|
||||
federation_handler = self.hs.get_handlers().federation_handler
|
||||
|
||||
if action == "remote_join":
|
||||
if len(remote_room_hosts) == 0:
|
||||
raise SynapseError(404, "No known servers")
|
||||
|
||||
# We don't do an auth check if we are doing an invite
|
||||
# join dance for now, since we're kinda implicitly checking
|
||||
# that we are allowed to join when we decide whether or not we
|
||||
# need to do the invite/join dance.
|
||||
yield federation_handler.do_invite_join(
|
||||
remote_room_hosts,
|
||||
event.room_id,
|
||||
event.user_id,
|
||||
event.content,
|
||||
)
|
||||
elif action == "remote_reject":
|
||||
yield federation_handler.do_remotely_reject_invite(
|
||||
remote_room_hosts,
|
||||
room_id,
|
||||
event.user_id
|
||||
)
|
||||
else:
|
||||
yield self.handle_new_client_event(
|
||||
requester,
|
||||
event,
|
||||
context,
|
||||
extra_users=[target_user],
|
||||
ratelimit=ratelimit,
|
||||
)
|
||||
|
||||
prev_member_event = context.current_state.get(
|
||||
(EventTypes.Member, target_user.to_string()),
|
||||
None
|
||||
)
|
||||
|
||||
if event.membership == Membership.JOIN:
|
||||
if not prev_member_event or prev_member_event.membership != Membership.JOIN:
|
||||
# Only fire user_joined_room if the user has acutally joined the
|
||||
# room. Don't bother if the user is just changing their profile
|
||||
# info.
|
||||
yield user_joined_room(self.distributor, target_user, room_id)
|
||||
elif event.membership == Membership.LEAVE:
|
||||
if prev_member_event and prev_member_event.membership == Membership.JOIN:
|
||||
user_left_room(self.distributor, target_user, room_id)
|
||||
|
||||
def _can_guest_join(self, current_state):
|
||||
"""
|
||||
Returns whether a guest can join a room based on its current state.
|
||||
"""
|
||||
guest_access = current_state.get((EventTypes.GuestAccess, ""), None)
|
||||
return (
|
||||
guest_access
|
||||
and guest_access.content
|
||||
and "guest_access" in guest_access.content
|
||||
and guest_access.content["guest_access"] == "can_join"
|
||||
)
|
||||
|
||||
def _should_do_dance(self, context, inviter, room_hosts=None):
|
||||
# TODO: Shouldn't this be remote_room_host?
|
||||
room_hosts = room_hosts or []
|
||||
|
||||
is_host_in_room = self.is_host_in_room(context.current_state)
|
||||
if is_host_in_room:
|
||||
return False, room_hosts
|
||||
|
||||
if inviter and not self.hs.is_mine(inviter):
|
||||
room_hosts.append(inviter.domain)
|
||||
|
||||
return True, room_hosts
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def lookup_room_alias(self, room_alias):
|
||||
"""
|
||||
Get the room ID associated with a room alias.
|
||||
|
||||
Args:
|
||||
room_alias (RoomAlias): The alias to look up.
|
||||
Returns:
|
||||
A tuple of:
|
||||
The room ID as a RoomID object.
|
||||
Hosts likely to be participating in the room ([str]).
|
||||
Raises:
|
||||
SynapseError if room alias could not be found.
|
||||
"""
|
||||
directory_handler = self.hs.get_handlers().directory_handler
|
||||
mapping = yield directory_handler.get_association(room_alias)
|
||||
|
||||
if not mapping:
|
||||
raise SynapseError(404, "No such room alias")
|
||||
|
||||
room_id = mapping["room_id"]
|
||||
servers = mapping["servers"]
|
||||
|
||||
defer.returnValue((RoomID.from_string(room_id), servers))
|
||||
|
||||
def get_inviter(self, user_id, current_state):
|
||||
prev_state = current_state.get((EventTypes.Member, user_id))
|
||||
if prev_state and prev_state.membership == Membership.INVITE:
|
||||
return UserID.from_string(prev_state.user_id)
|
||||
return None
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def get_joined_rooms_for_user(self, user):
|
||||
"""Returns a list of roomids that the user has any of the given
|
||||
membership states in."""
|
||||
|
||||
rooms = yield self.store.get_rooms_for_user(
|
||||
user.to_string(),
|
||||
)
|
||||
|
||||
# For some reason the list of events contains duplicates
|
||||
# TODO(paul): work out why because I really don't think it should
|
||||
room_ids = set(r.room_id for r in rooms)
|
||||
|
||||
defer.returnValue(room_ids)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def do_3pid_invite(
|
||||
self,
|
||||
room_id,
|
||||
inviter,
|
||||
medium,
|
||||
address,
|
||||
id_server,
|
||||
requester,
|
||||
txn_id
|
||||
):
|
||||
invitee = yield self._lookup_3pid(
|
||||
id_server, medium, address
|
||||
)
|
||||
|
||||
if invitee:
|
||||
handler = self.hs.get_handlers().room_member_handler
|
||||
yield handler.update_membership(
|
||||
requester,
|
||||
UserID.from_string(invitee),
|
||||
room_id,
|
||||
"invite",
|
||||
txn_id=txn_id,
|
||||
)
|
||||
else:
|
||||
yield self._make_and_store_3pid_invite(
|
||||
requester,
|
||||
id_server,
|
||||
medium,
|
||||
address,
|
||||
room_id,
|
||||
inviter,
|
||||
txn_id=txn_id
|
||||
)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _lookup_3pid(self, id_server, medium, address):
|
||||
"""Looks up a 3pid in the passed identity server.
|
||||
|
||||
Args:
|
||||
id_server (str): The server name (including port, if required)
|
||||
of the identity server to use.
|
||||
medium (str): The type of the third party identifier (e.g. "email").
|
||||
address (str): The third party identifier (e.g. "foo@example.com").
|
||||
|
||||
Returns:
|
||||
(str) the matrix ID of the 3pid, or None if it is not recognized.
|
||||
"""
|
||||
try:
|
||||
data = yield self.hs.get_simple_http_client().get_json(
|
||||
"%s%s/_matrix/identity/api/v1/lookup" % (id_server_scheme, id_server,),
|
||||
{
|
||||
"medium": medium,
|
||||
"address": address,
|
||||
}
|
||||
)
|
||||
|
||||
if "mxid" in data:
|
||||
if "signatures" not in data:
|
||||
raise AuthError(401, "No signatures on 3pid binding")
|
||||
self.verify_any_signature(data, id_server)
|
||||
defer.returnValue(data["mxid"])
|
||||
|
||||
except IOError as e:
|
||||
logger.warn("Error from identity server lookup: %s" % (e,))
|
||||
defer.returnValue(None)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def verify_any_signature(self, data, server_hostname):
|
||||
if server_hostname not in data["signatures"]:
|
||||
raise AuthError(401, "No signature from server %s" % (server_hostname,))
|
||||
for key_name, signature in data["signatures"][server_hostname].items():
|
||||
key_data = yield self.hs.get_simple_http_client().get_json(
|
||||
"%s%s/_matrix/identity/api/v1/pubkey/%s" %
|
||||
(id_server_scheme, server_hostname, key_name,),
|
||||
)
|
||||
if "public_key" not in key_data:
|
||||
raise AuthError(401, "No public key named %s from %s" %
|
||||
(key_name, server_hostname,))
|
||||
verify_signed_json(
|
||||
data,
|
||||
server_hostname,
|
||||
decode_verify_key_bytes(key_name, decode_base64(key_data["public_key"]))
|
||||
)
|
||||
return
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _make_and_store_3pid_invite(
|
||||
self,
|
||||
requester,
|
||||
id_server,
|
||||
medium,
|
||||
address,
|
||||
room_id,
|
||||
user,
|
||||
txn_id
|
||||
):
|
||||
room_state = yield self.hs.get_state_handler().get_current_state(room_id)
|
||||
|
||||
inviter_display_name = ""
|
||||
inviter_avatar_url = ""
|
||||
member_event = room_state.get((EventTypes.Member, user.to_string()))
|
||||
if member_event:
|
||||
inviter_display_name = member_event.content.get("displayname", "")
|
||||
inviter_avatar_url = member_event.content.get("avatar_url", "")
|
||||
|
||||
canonical_room_alias = ""
|
||||
canonical_alias_event = room_state.get((EventTypes.CanonicalAlias, ""))
|
||||
if canonical_alias_event:
|
||||
canonical_room_alias = canonical_alias_event.content.get("alias", "")
|
||||
|
||||
room_name = ""
|
||||
room_name_event = room_state.get((EventTypes.Name, ""))
|
||||
if room_name_event:
|
||||
room_name = room_name_event.content.get("name", "")
|
||||
|
||||
room_join_rules = ""
|
||||
join_rules_event = room_state.get((EventTypes.JoinRules, ""))
|
||||
if join_rules_event:
|
||||
room_join_rules = join_rules_event.content.get("join_rule", "")
|
||||
|
||||
room_avatar_url = ""
|
||||
room_avatar_event = room_state.get((EventTypes.RoomAvatar, ""))
|
||||
if room_avatar_event:
|
||||
room_avatar_url = room_avatar_event.content.get("url", "")
|
||||
|
||||
token, public_keys, fallback_public_key, display_name = (
|
||||
yield self._ask_id_server_for_third_party_invite(
|
||||
id_server=id_server,
|
||||
medium=medium,
|
||||
address=address,
|
||||
room_id=room_id,
|
||||
inviter_user_id=user.to_string(),
|
||||
room_alias=canonical_room_alias,
|
||||
room_avatar_url=room_avatar_url,
|
||||
room_join_rules=room_join_rules,
|
||||
room_name=room_name,
|
||||
inviter_display_name=inviter_display_name,
|
||||
inviter_avatar_url=inviter_avatar_url
|
||||
)
|
||||
)
|
||||
|
||||
msg_handler = self.hs.get_handlers().message_handler
|
||||
yield msg_handler.create_and_send_nonmember_event(
|
||||
requester,
|
||||
{
|
||||
"type": EventTypes.ThirdPartyInvite,
|
||||
"content": {
|
||||
"display_name": display_name,
|
||||
"public_keys": public_keys,
|
||||
|
||||
# For backwards compatibility:
|
||||
"key_validity_url": fallback_public_key["key_validity_url"],
|
||||
"public_key": fallback_public_key["public_key"],
|
||||
},
|
||||
"room_id": room_id,
|
||||
"sender": user.to_string(),
|
||||
"state_key": token,
|
||||
},
|
||||
txn_id=txn_id,
|
||||
)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _ask_id_server_for_third_party_invite(
|
||||
self,
|
||||
id_server,
|
||||
medium,
|
||||
address,
|
||||
room_id,
|
||||
inviter_user_id,
|
||||
room_alias,
|
||||
room_avatar_url,
|
||||
room_join_rules,
|
||||
room_name,
|
||||
inviter_display_name,
|
||||
inviter_avatar_url
|
||||
):
|
||||
"""
|
||||
Asks an identity server for a third party invite.
|
||||
|
||||
:param id_server (str): hostname + optional port for the identity server.
|
||||
:param medium (str): The literal string "email".
|
||||
:param address (str): The third party address being invited.
|
||||
:param room_id (str): The ID of the room to which the user is invited.
|
||||
:param inviter_user_id (str): The user ID of the inviter.
|
||||
:param room_alias (str): An alias for the room, for cosmetic
|
||||
notifications.
|
||||
:param room_avatar_url (str): The URL of the room's avatar, for cosmetic
|
||||
notifications.
|
||||
:param room_join_rules (str): The join rules of the email
|
||||
(e.g. "public").
|
||||
:param room_name (str): The m.room.name of the room.
|
||||
:param inviter_display_name (str): The current display name of the
|
||||
inviter.
|
||||
:param inviter_avatar_url (str): The URL of the inviter's avatar.
|
||||
|
||||
:return: A deferred tuple containing:
|
||||
token (str): The token which must be signed to prove authenticity.
|
||||
public_keys ([{"public_key": str, "key_validity_url": str}]):
|
||||
public_key is a base64-encoded ed25519 public key.
|
||||
fallback_public_key: One element from public_keys.
|
||||
display_name (str): A user-friendly name to represent the invited
|
||||
user.
|
||||
"""
|
||||
|
||||
is_url = "%s%s/_matrix/identity/api/v1/store-invite" % (
|
||||
id_server_scheme, id_server,
|
||||
)
|
||||
|
||||
invite_config = {
|
||||
"medium": medium,
|
||||
"address": address,
|
||||
"room_id": room_id,
|
||||
"room_alias": room_alias,
|
||||
"room_avatar_url": room_avatar_url,
|
||||
"room_join_rules": room_join_rules,
|
||||
"room_name": room_name,
|
||||
"sender": inviter_user_id,
|
||||
"sender_display_name": inviter_display_name,
|
||||
"sender_avatar_url": inviter_avatar_url,
|
||||
}
|
||||
|
||||
if self.hs.config.invite_3pid_guest:
|
||||
registration_handler = self.hs.get_handlers().registration_handler
|
||||
guest_access_token = yield registration_handler.guest_access_token_for(
|
||||
medium=medium,
|
||||
address=address,
|
||||
inviter_user_id=inviter_user_id,
|
||||
)
|
||||
|
||||
guest_user_info = yield self.hs.get_auth().get_user_by_access_token(
|
||||
guest_access_token
|
||||
)
|
||||
|
||||
invite_config.update({
|
||||
"guest_access_token": guest_access_token,
|
||||
"guest_user_id": guest_user_info["user"].to_string(),
|
||||
})
|
||||
|
||||
data = yield self.hs.get_simple_http_client().post_urlencoded_get_json(
|
||||
is_url,
|
||||
invite_config
|
||||
)
|
||||
# TODO: Check for success
|
||||
token = data["token"]
|
||||
public_keys = data.get("public_keys", [])
|
||||
if "public_key" in data:
|
||||
fallback_public_key = {
|
||||
"public_key": data["public_key"],
|
||||
"key_validity_url": "%s%s/_matrix/identity/api/v1/pubkey/isvalid" % (
|
||||
id_server_scheme, id_server,
|
||||
),
|
||||
}
|
||||
else:
|
||||
fallback_public_key = public_keys[0]
|
||||
|
||||
if not public_keys:
|
||||
public_keys.append(fallback_public_key)
|
||||
display_name = data["display_name"]
|
||||
defer.returnValue((token, public_keys, fallback_public_key, display_name))
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def forget(self, user, room_id):
|
||||
user_id = user.to_string()
|
||||
|
||||
member = yield self.state_handler.get_current_state(
|
||||
room_id=room_id,
|
||||
event_type=EventTypes.Member,
|
||||
state_key=user_id
|
||||
)
|
||||
membership = member.membership if member else None
|
||||
|
||||
if membership is not None and membership != Membership.LEAVE:
|
||||
raise SynapseError(400, "User %s in room %s" % (
|
||||
user_id, room_id
|
||||
))
|
||||
|
||||
if membership:
|
||||
yield self.store.forget(user_id, room_id)
|
||||
Loading…
Reference in a new issue