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			293 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			293 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
# -*- coding: utf-8 -*-
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# Copyright 2014-2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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#     http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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from twisted.internet import defer
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from synapse.api.errors import SynapseError, AuthError, CodeMessageException
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from synapse.types import UserID, get_domain_from_id
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from ._base import BaseHandler
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logger = logging.getLogger(__name__)
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class ProfileHandler(BaseHandler):
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    PROFILE_UPDATE_MS = 60 * 1000
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    PROFILE_UPDATE_EVERY_MS = 24 * 60 * 60 * 1000
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    def __init__(self, hs):
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        super(ProfileHandler, self).__init__(hs)
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        self.federation = hs.get_replication_layer()
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        self.federation.register_query_handler(
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            "profile", self.on_profile_query
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        )
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        self.user_directory_handler = hs.get_user_directory_handler()
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        self.clock.looping_call(self._update_remote_profile_cache, self.PROFILE_UPDATE_MS)
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    @defer.inlineCallbacks
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    def get_profile(self, user_id):
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        target_user = UserID.from_string(user_id)
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        if self.hs.is_mine(target_user):
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            displayname = yield self.store.get_profile_displayname(
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                target_user.localpart
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            )
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            avatar_url = yield self.store.get_profile_avatar_url(
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                target_user.localpart
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            )
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            defer.returnValue({
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                "displayname": displayname,
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                "avatar_url": avatar_url,
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            })
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        else:
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            try:
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                result = yield self.federation.make_query(
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                    destination=target_user.domain,
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                    query_type="profile",
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                    args={
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                        "user_id": user_id,
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                    },
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                    ignore_backoff=True,
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                )
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                defer.returnValue(result)
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            except CodeMessageException as e:
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                if e.code != 404:
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                    logger.exception("Failed to get displayname")
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                raise
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    @defer.inlineCallbacks
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    def get_profile_from_cache(self, user_id):
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        """Get the profile information from our local cache. If the user is
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        ours then the profile information will always be corect. Otherwise,
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        it may be out of date/missing.
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        """
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        target_user = UserID.from_string(user_id)
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        if self.hs.is_mine(target_user):
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            displayname = yield self.store.get_profile_displayname(
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                target_user.localpart
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            )
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            avatar_url = yield self.store.get_profile_avatar_url(
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                target_user.localpart
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            )
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            defer.returnValue({
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                "displayname": displayname,
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                "avatar_url": avatar_url,
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            })
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        else:
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            profile = yield self.store.get_from_remote_profile_cache(user_id)
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            defer.returnValue(profile or {})
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    @defer.inlineCallbacks
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    def get_displayname(self, target_user):
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        if self.hs.is_mine(target_user):
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            displayname = yield self.store.get_profile_displayname(
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                target_user.localpart
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            )
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            defer.returnValue(displayname)
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        else:
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            try:
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                result = yield self.federation.make_query(
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                    destination=target_user.domain,
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                    query_type="profile",
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                    args={
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                        "user_id": target_user.to_string(),
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                        "field": "displayname",
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                    },
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                    ignore_backoff=True,
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                )
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            except CodeMessageException as e:
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                if e.code != 404:
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                    logger.exception("Failed to get displayname")
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                raise
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            except Exception:
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                logger.exception("Failed to get displayname")
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            else:
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                defer.returnValue(result["displayname"])
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    @defer.inlineCallbacks
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    def set_displayname(self, target_user, requester, new_displayname, by_admin=False):
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        """target_user is the user whose displayname is to be changed;
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        auth_user is the user attempting to make this change."""
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        if not self.hs.is_mine(target_user):
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            raise SynapseError(400, "User is not hosted on this Home Server")
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        if not by_admin and target_user != requester.user:
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            raise AuthError(400, "Cannot set another user's displayname")
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        if new_displayname == '':
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            new_displayname = None
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        yield self.store.set_profile_displayname(
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            target_user.localpart, new_displayname
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        )
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        if self.hs.config.user_directory_include_pattern:
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            profile = yield self.store.get_profileinfo(target_user.localpart)
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            yield self.user_directory_handler.handle_local_profile_change(
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                target_user.to_string(), profile
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            )
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        yield self._update_join_states(requester, target_user)
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    @defer.inlineCallbacks
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    def get_avatar_url(self, target_user):
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        if self.hs.is_mine(target_user):
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            avatar_url = yield self.store.get_profile_avatar_url(
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                target_user.localpart
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            )
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            defer.returnValue(avatar_url)
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        else:
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            try:
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                result = yield self.federation.make_query(
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                    destination=target_user.domain,
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                    query_type="profile",
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                    args={
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                        "user_id": target_user.to_string(),
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                        "field": "avatar_url",
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                    },
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                    ignore_backoff=True,
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                )
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            except CodeMessageException as e:
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                if e.code != 404:
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                    logger.exception("Failed to get avatar_url")
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                raise
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            except Exception:
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                logger.exception("Failed to get avatar_url")
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            defer.returnValue(result["avatar_url"])
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    @defer.inlineCallbacks
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    def set_avatar_url(self, target_user, requester, new_avatar_url, by_admin=False):
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        """target_user is the user whose avatar_url is to be changed;
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        auth_user is the user attempting to make this change."""
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        if not self.hs.is_mine(target_user):
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            raise SynapseError(400, "User is not hosted on this Home Server")
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        if not by_admin and target_user != requester.user:
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            raise AuthError(400, "Cannot set another user's avatar_url")
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        yield self.store.set_profile_avatar_url(
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            target_user.localpart, new_avatar_url
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        )
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        if self.hs.config.user_directory_include_pattern:
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            profile = yield self.store.get_profileinfo(target_user.localpart)
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            yield self.user_directory_handler.handle_local_profile_change(
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                target_user.user_id, profile
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            )
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        yield self._update_join_states(requester, target_user)
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    @defer.inlineCallbacks
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    def on_profile_query(self, args):
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        user = UserID.from_string(args["user_id"])
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        if not self.hs.is_mine(user):
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            raise SynapseError(400, "User is not hosted on this Home Server")
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        just_field = args.get("field", None)
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        response = {}
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        if just_field is None or just_field == "displayname":
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            response["displayname"] = yield self.store.get_profile_displayname(
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                user.localpart
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            )
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        if just_field is None or just_field == "avatar_url":
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            response["avatar_url"] = yield self.store.get_profile_avatar_url(
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                user.localpart
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            )
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        defer.returnValue(response)
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    @defer.inlineCallbacks
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    def _update_join_states(self, requester, target_user):
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        if not self.hs.is_mine(target_user):
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            return
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        yield self.ratelimit(requester)
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        room_ids = yield self.store.get_rooms_for_user(
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            target_user.to_string(),
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        )
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        for room_id in room_ids:
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            handler = self.hs.get_handlers().room_member_handler
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            try:
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                # Assume the target_user isn't a guest,
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                # because we don't let guests set profile or avatar data.
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                yield handler.update_membership(
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                    requester,
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                    target_user,
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                    room_id,
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                    "join",  # We treat a profile update like a join.
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                    ratelimit=False,  # Try to hide that these events aren't atomic.
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                )
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            except Exception as e:
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                logger.warn(
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                    "Failed to update join event for room %s - %s",
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                    room_id, str(e.message)
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                )
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    def _update_remote_profile_cache(self):
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        """Called periodically to check profiles of remote users we haven't
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        checked in a while.
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        """
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        entries = yield self.store.get_remote_profile_cache_entries_that_expire(
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            last_checked=self.clock.time_msec() - self.PROFILE_UPDATE_EVERY_MS
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        )
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        for user_id, displayname, avatar_url in entries:
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            is_subscribed = yield self.store.is_subscribed_remote_profile_for_user(
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                user_id,
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            )
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            if not is_subscribed:
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                yield self.store.maybe_delete_remote_profile_cache(user_id)
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                continue
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            try:
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                profile = yield self.federation.make_query(
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                    destination=get_domain_from_id(user_id),
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                    query_type="profile",
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                    args={
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                        "user_id": user_id,
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                    },
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                    ignore_backoff=True,
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                )
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            except Exception:
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                logger.exception("Failed to get avatar_url")
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                yield self.store.update_remote_profile_cache(
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                    user_id, displayname, avatar_url
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                )
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                continue
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            new_name = profile.get("displayname")
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            new_avatar = profile.get("avatar_url")
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            # We always hit update to update the last_check timestamp
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            yield self.store.update_remote_profile_cache(
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                user_id, new_name, new_avatar
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            )
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