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Diffstat (limited to 'synapse/util/room_name.py')
| -rw-r--r-- | synapse/util/room_name.py | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/synapse/util/room_name.py b/synapse/util/room_name.py new file mode 100644 index 0000000000..7e49b92bb4 --- /dev/null +++ b/synapse/util/room_name.py @@ -0,0 +1,142 @@ +# -*- 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 re + +# intentionally looser than what aliases we allow to be registered since +# other HSes may allow aliases that we would not +ALIAS_RE = re.compile(r"^#.*:.+$") + +ALL_ALONE = "Empty Room" + + +def calculate_room_name(room_state, user_id): + # does it have a name? + if ("m.room.name", "") in room_state: + m_room_name = room_state[("m.room.name", "")] + if m_room_name.content and m_room_name.content["name"]: + return m_room_name.content["name"] + + # does it have a caononical alias? + if ("m.room.canonical_alias", "") in room_state: + canon_alias = room_state[("m.room.canonical_alias", "")] + if ( + canon_alias.content and canon_alias.content["alias"] and + looks_like_an_alias(canon_alias.content["alias"]) + ): + return canon_alias.content["alias"] + + # at this point we're going to need to search the state by all state keys + # for an event type, so rearrange the data structure + room_state_bytype = state_as_two_level_dict(room_state) + + # right then, any aliases at all? + if "m.room.aliases" in room_state_bytype: + m_room_aliases = room_state_bytype["m.room.aliases"] + if len(m_room_aliases.values()) > 0: + first_alias_event = m_room_aliases.values()[0] + if first_alias_event.content and first_alias_event.content["aliases"]: + the_aliases = first_alias_event.content["aliases"] + if len(the_aliases) > 0 and looks_like_an_alias(the_aliases[0]): + return the_aliases[0] + + my_member_event = None + if ("m.room.member", user_id) in room_state: + my_member_event = room_state[("m.room.member", user_id)] + + if ( + my_member_event is not None and + my_member_event.content['membership'] == "invite" + ): + if ("m.room.member", my_member_event.sender) in room_state: + inviter_member_event = room_state[("m.room.member", my_member_event.sender)] + return "Invite from %s" % (name_from_member_event(inviter_member_event),) + else: + return "Room Invite" + + # we're going to have to generate a name based on who's in the room, + # so find out who is in the room that isn't the user. + if "m.room.member" in room_state_bytype: + all_members = [ + ev for ev in room_state_bytype["m.room.member"].values() + if ev.membership == "join" or ev.membership == "invite" + ] + other_members = [m for m in all_members if m.sender != user_id] + else: + other_members = [] + all_members = [] + + if len(other_members) == 0: + if len(all_members) == 1: + # self-chat, peeked room with 1 participant, + # or inbound invite, or outbound 3PID invite. + if all_members[0].sender == user_id: + if "m.room.third_party_invite" in room_state_bytype: + third_party_invites = room_state_bytype["m.room.third_party_invite"] + if len(third_party_invites) > 0: + # technically third party invite events are not member + # events, but they are close enough + return "Inviting %s" ( + descriptor_from_member_events(third_party_invites) + ) + else: + return ALL_ALONE + else: + return name_from_member_event(all_members[0]) + else: + return ALL_ALONE + else: + return descriptor_from_member_events(other_members) + + +def state_as_two_level_dict(state): + ret = {} + for k, v in state.items(): + ret.setdefault(k[0], {})[k[1]] = v + return ret + + +def looks_like_an_alias(string): + return ALIAS_RE.match(string) is not None + + +def descriptor_from_member_events(member_events): + # else if (otherMembers.length === 1) { + # return otherMembers[0].name; + # } + # else if (otherMembers.length === 2) { + # return ( + # otherMembers[0].name + " and " + otherMembers[1].name + # ); + # } + # else { + # return ( + # otherMembers[0].name + " and " + (otherMembers.length - 1) + " others" + # ); + # } + if len(member_events) == 0: + return "nobody" + elif len(member_events) == 1: + return name_from_member_event(member_events[0]) + return "all the people, so many people. They all go hand in hand, hand in hand in their park life." + + +def name_from_member_event(member_event): + if ( + member_event.content and "displayname" in member_event.content and + member_event.content["displayname"] + ): + return member_event.content["displayname"] + return member_event.sender \ No newline at end of file |