%%%---------------------------------------------------------------------- %%% File : mod_muc_room.erl %%% Author : Alexey Shchepin %%% Purpose : MUC room stuff %%% Created : 19 Mar 2003 by Alexey Shchepin %%% %%% %%% ejabberd, Copyright (C) 2002-2016 ProcessOne %%% %%% This program is free software; you can redistribute it and/or %%% modify it under the terms of the GNU General Public License as %%% published by the Free Software Foundation; either version 2 of the %%% License, or (at your option) any later version. %%% %%% This program is distributed in the hope that it will be useful, %%% but WITHOUT ANY WARRANTY; without even the implied warranty of %%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU %%% General Public License for more details. %%% %%% You should have received a copy of the GNU General Public License along %%% with this program; if not, write to the Free Software Foundation, Inc., %%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. %%% %%%---------------------------------------------------------------------- -module(mod_muc_room). -author('alexey@process-one.net'). -behaviour(gen_fsm). %% External exports -export([start_link/9, start_link/7, start/9, start/7, get_role/2, get_affiliation/2, is_occupant_or_admin/2, route/4]). %% gen_fsm callbacks -export([init/1, normal_state/2, handle_event/3, handle_sync_event/4, handle_info/3, terminate/3, code_change/4]). -include("ejabberd.hrl"). -include("logger.hrl"). -include("xmpp.hrl"). -include("mod_muc_room.hrl"). -define(MAX_USERS_DEFAULT_LIST, [5, 10, 20, 30, 50, 100, 200, 500, 1000, 2000, 5000]). -define(DEFAULT_MAX_USERS_PRESENCE,1000). %-define(DBGFSM, true). -ifdef(DBGFSM). -define(FSMOPTS, [{debug, [trace]}]). -else. -define(FSMOPTS, []). -endif. -type state() :: #state{}. -type fsm_stop() :: {stop, normal, state()}. -type fsm_next() :: {next_state, normal_state, state()}. -type fsm_transition() :: fsm_stop() | fsm_next(). -export_type([state/0]). -callback set_affiliation(binary(), binary(), binary(), jid(), affiliation(), binary()) -> ok | {error, any()}. -callback set_affiliations(binary(), binary(), binary(), ?TDICT) -> ok | {error, any()}. -callback get_affiliation(binary(), binary(), binary(), binary(), binary()) -> {ok, affiliation()} | {error, any()}. -callback get_affiliations(binary(), binary(), binary()) -> {ok, ?TDICT} | {error, any()}. -callback search_affiliation(binary(), binary(), binary(), affiliation()) -> {ok, [{ljid(), {affiliation(), binary()}}]} | {error, any()}. %%%---------------------------------------------------------------------- %%% API %%%---------------------------------------------------------------------- start(Host, ServerHost, Access, Room, HistorySize, RoomShaper, Creator, Nick, DefRoomOpts) -> gen_fsm:start(?MODULE, [Host, ServerHost, Access, Room, HistorySize, RoomShaper, Creator, Nick, DefRoomOpts], ?FSMOPTS). start(Host, ServerHost, Access, Room, HistorySize, RoomShaper, Opts) -> gen_fsm:start(?MODULE, [Host, ServerHost, Access, Room, HistorySize, RoomShaper, Opts], ?FSMOPTS). start_link(Host, ServerHost, Access, Room, HistorySize, RoomShaper, Creator, Nick, DefRoomOpts) -> gen_fsm:start_link(?MODULE, [Host, ServerHost, Access, Room, HistorySize, RoomShaper, Creator, Nick, DefRoomOpts], ?FSMOPTS). start_link(Host, ServerHost, Access, Room, HistorySize, RoomShaper, Opts) -> gen_fsm:start_link(?MODULE, [Host, ServerHost, Access, Room, HistorySize, RoomShaper, Opts], ?FSMOPTS). %%%---------------------------------------------------------------------- %%% Callback functions from gen_fsm %%%---------------------------------------------------------------------- init([Host, ServerHost, Access, Room, HistorySize, RoomShaper, Creator, _Nick, DefRoomOpts]) -> process_flag(trap_exit, true), Shaper = shaper:new(RoomShaper), State = set_affiliation(Creator, owner, #state{host = Host, server_host = ServerHost, access = Access, room = Room, history = lqueue_new(HistorySize), jid = jid:make(Room, Host, <<"">>), just_created = true, room_shaper = Shaper}), State1 = set_opts(DefRoomOpts, State), store_room(State1), ?INFO_MSG("Created MUC room ~s@~s by ~s", [Room, Host, jid:to_string(Creator)]), add_to_log(room_existence, created, State1), add_to_log(room_existence, started, State1), {ok, normal_state, State1}; init([Host, ServerHost, Access, Room, HistorySize, RoomShaper, Opts]) -> process_flag(trap_exit, true), Shaper = shaper:new(RoomShaper), State = set_opts(Opts, #state{host = Host, server_host = ServerHost, access = Access, room = Room, history = lqueue_new(HistorySize), jid = jid:make(Room, Host, <<"">>), room_shaper = Shaper}), add_to_log(room_existence, started, State), {ok, normal_state, State}. normal_state({route, From, <<"">>, #message{type = Type, lang = Lang} = Packet}, StateData) -> case is_user_online(From, StateData) orelse is_subscriber(From, StateData) orelse is_user_allowed_message_nonparticipant(From, StateData) of true when Type == groupchat -> Activity = get_user_activity(From, StateData), Now = p1_time_compat:system_time(micro_seconds), MinMessageInterval = trunc(gen_mod:get_module_opt( StateData#state.server_host, mod_muc, min_message_interval, fun(MMI) when is_number(MMI) -> MMI end, 0) * 1000000), Size = element_size(Packet), {MessageShaper, MessageShaperInterval} = shaper:update(Activity#activity.message_shaper, Size), if Activity#activity.message /= undefined -> ErrText = <<"Traffic rate limit is exceeded">>, Err = xmpp:err_resource_constraint(ErrText, Lang), ejabberd_router:route_error(StateData#state.jid, From, Packet, Err), {next_state, normal_state, StateData}; Now >= Activity#activity.message_time + MinMessageInterval, MessageShaperInterval == 0 -> {RoomShaper, RoomShaperInterval} = shaper:update(StateData#state.room_shaper, Size), RoomQueueEmpty = queue:is_empty(StateData#state.room_queue), if RoomShaperInterval == 0, RoomQueueEmpty -> NewActivity = Activity#activity{ message_time = Now, message_shaper = MessageShaper}, StateData1 = store_user_activity(From, NewActivity, StateData), StateData2 = StateData1#state{room_shaper = RoomShaper}, process_groupchat_message(From, Packet, StateData2); true -> StateData1 = if RoomQueueEmpty -> erlang:send_after(RoomShaperInterval, self(), process_room_queue), StateData#state{room_shaper = RoomShaper}; true -> StateData end, NewActivity = Activity#activity{ message_time = Now, message_shaper = MessageShaper, message = Packet}, RoomQueue = queue:in({message, From}, StateData#state.room_queue), StateData2 = store_user_activity(From, NewActivity, StateData1), StateData3 = StateData2#state{room_queue = RoomQueue}, {next_state, normal_state, StateData3} end; true -> MessageInterval = (Activity#activity.message_time + MinMessageInterval - Now) div 1000, Interval = lists:max([MessageInterval, MessageShaperInterval]), erlang:send_after(Interval, self(), {process_user_message, From}), NewActivity = Activity#activity{ message = Packet, message_shaper = MessageShaper}, StateData1 = store_user_activity(From, NewActivity, StateData), {next_state, normal_state, StateData1} end; true when Type == error -> case is_user_online(From, StateData) of true -> ErrorText = <<"It is not allowed to send error messages to the" " room. The participant (~s) has sent an error " "message (~s) and got kicked from the room">>, NewState = expulse_participant(Packet, From, StateData, translate:translate(Lang, ErrorText)), close_room_if_temporary_and_empty(NewState); _ -> {next_state, normal_state, StateData} end; true when Type == chat -> ErrText = <<"It is not allowed to send private messages " "to the conference">>, Err = xmpp:err_not_acceptable(ErrText, Lang), ejabberd_router:route_error(StateData#state.jid, From, Packet, Err), {next_state, normal_state, StateData}; true when Type == normal -> {next_state, normal_state, try xmpp:decode_els(Packet) of Pkt -> process_normal_message(From, Pkt, StateData) catch _:{xmpp_codec, Why} -> Txt = xmpp:format_error(Why), Err = xmpp:err_bad_request(Txt, Lang), ejabberd_router:route_error( StateData#state.jid, From, Packet, Err), StateData end}; true -> ErrText = <<"Improper message type">>, Err = xmpp:err_not_acceptable(ErrText, Lang), ejabberd_router:route_error(StateData#state.jid, From, Packet, Err), {next_state, normal_state, StateData}; false when Type /= error -> handle_roommessage_from_nonparticipant(Packet, StateData, From), {next_state, normal_state, StateData}; false -> {next_state, normal_state, StateData} end; normal_state({route, From, <<"">>, #iq{type = Type, lang = Lang, sub_els = [_]} = IQ0}, StateData) when Type == get; Type == set -> try case ejabberd_hooks:run_fold( muc_process_iq, StateData#state.server_host, xmpp:set_from_to(xmpp:decode_els(IQ0), From, StateData#state.jid), [StateData]) of ignore -> {next_state, normal_state, StateData}; #iq{type = T} = IQRes when T == error; T == result -> ejabberd_router:route(StateData#state.jid, From, IQRes), {next_state, normal_state, StateData}; #iq{sub_els = [SubEl]} = IQ -> Res1 = case xmpp:get_ns(SubEl) of ?NS_MUC_ADMIN -> process_iq_admin(From, IQ, StateData); ?NS_MUC_OWNER -> process_iq_owner(From, IQ, StateData); ?NS_DISCO_INFO when SubEl#disco_info.node == <<>> -> process_iq_disco_info(From, IQ, StateData); ?NS_DISCO_ITEMS -> process_iq_disco_items(From, IQ, StateData); ?NS_VCARD -> process_iq_vcard(From, IQ, StateData); ?NS_MUCSUB -> process_iq_mucsub(From, IQ, StateData); ?NS_CAPTCHA -> process_iq_captcha(From, IQ, StateData); _ -> Txt = <<"The feature requested is not " "supported by the conference">>, {error, xmpp:err_service_unavailable(Txt, Lang)} end, {IQRes, NewStateData} = case Res1 of {result, Res, SD} -> {xmpp:make_iq_result(IQ, Res), SD}; {result, Res} -> {xmpp:make_iq_result(IQ, Res), StateData}; {ignore, SD} -> {ignore, SD}; {error, Error, ResStateData} -> {xmpp:make_error(IQ0, Error), ResStateData}; {error, Error} -> {xmpp:make_error(IQ0, Error), StateData} end, if IQRes /= ignore -> ejabberd_router:route(StateData#state.jid, From, IQRes); true -> ok end, case NewStateData of stop -> {stop, normal, StateData}; _ when NewStateData#state.just_created -> close_room_if_temporary_and_empty(NewStateData); _ -> {next_state, normal_state, NewStateData} end end catch _:{xmpp_codec, Why} -> ErrTxt = xmpp:format_error(Why), Err = xmpp:err_bad_request(ErrTxt, Lang), ejabberd_router:route_error(StateData#state.jid, From, IQ0, Err) end; normal_state({route, From, <<"">>, #iq{} = IQ}, StateData) -> Err = xmpp:err_bad_request(), ejabberd_router:route_error(StateData#state.jid, From, IQ, Err), case StateData#state.just_created of true -> {stop, normal, StateData}; false -> {next_state, normal_state, StateData} end; normal_state({route, From, Nick, #presence{} = Packet}, StateData) -> Activity = get_user_activity(From, StateData), Now = p1_time_compat:system_time(micro_seconds), MinPresenceInterval = trunc(gen_mod:get_module_opt(StateData#state.server_host, mod_muc, min_presence_interval, fun(I) when is_number(I), I>=0 -> I end, 0) * 1000000), if (Now >= Activity#activity.presence_time + MinPresenceInterval) and (Activity#activity.presence == undefined) -> NewActivity = Activity#activity{presence_time = Now}, StateData1 = store_user_activity(From, NewActivity, StateData), process_presence(From, Nick, Packet, StateData1); true -> if Activity#activity.presence == undefined -> Interval = (Activity#activity.presence_time + MinPresenceInterval - Now) div 1000, erlang:send_after(Interval, self(), {process_user_presence, From}); true -> ok end, NewActivity = Activity#activity{presence = {Nick, Packet}}, StateData1 = store_user_activity(From, NewActivity, StateData), {next_state, normal_state, StateData1} end; normal_state({route, From, ToNick, #message{type = Type, lang = Lang} = Packet}, StateData) -> case decide_fate_message(Packet, From, StateData) of {expulse_sender, Reason} -> ?DEBUG(Reason, []), ErrorText = <<"It is not allowed to send error messages to the" " room. The participant (~s) has sent an error " "message (~s) and got kicked from the room">>, NewState = expulse_participant(Packet, From, StateData, translate:translate(Lang, ErrorText)), {next_state, normal_state, NewState}; forget_message -> {next_state, normal_state, StateData}; continue_delivery -> case {(StateData#state.config)#config.allow_private_messages, is_user_online(From, StateData) orelse is_subscriber(From, StateData)} of {true, true} when Type == groupchat -> ErrText = <<"It is not allowed to send private messages " "of type \"groupchat\"">>, Err = xmpp:err_bad_request(ErrText, Lang), ejabberd_router:route_error( jid:replace_resource(StateData#state.jid, ToNick), From, Packet, Err); {true, true} -> case find_jids_by_nick(ToNick, StateData) of [] -> ErrText = <<"Recipient is not in the conference room">>, Err = xmpp:err_item_not_found(ErrText, Lang), ejabberd_router:route_error( jid:replace_resource(StateData#state.jid, ToNick), From, Packet, Err); ToJIDs -> SrcIsVisitor = is_visitor(From, StateData), DstIsModerator = is_moderator(hd(ToJIDs), StateData), PmFromVisitors = (StateData#state.config)#config.allow_private_messages_from_visitors, if SrcIsVisitor == false; PmFromVisitors == anyone; (PmFromVisitors == moderators) and DstIsModerator -> {FromNick, _} = get_participant_data(From, StateData), FromNickJID = jid:replace_resource(StateData#state.jid, FromNick), X = #muc_user{}, PrivMsg = xmpp:set_subtag(Packet, X), [ejabberd_router:route(FromNickJID, ToJID, PrivMsg) || ToJID <- ToJIDs]; true -> ErrText = <<"It is not allowed to send private messages">>, Err = xmpp:err_forbidden(ErrText, Lang), ejabberd_router:route_error( jid:replace_resource(StateData#state.jid, ToNick), From, Packet, Err) end end; {true, false} -> ErrText = <<"Only occupants are allowed to send messages " "to the conference">>, Err = xmpp:err_not_acceptable(ErrText, Lang), ejabberd_router:route_error( jid:replace_resource(StateData#state.jid, ToNick), From, Packet, Err); {false, _} -> ErrText = <<"It is not allowed to send private messages">>, Err = xmpp:err_forbidden(ErrText, Lang), ejabberd_router:route_error( jid:replace_resource(StateData#state.jid, ToNick), From, Packet, Err) end, {next_state, normal_state, StateData} end; normal_state({route, From, ToNick, #iq{id = StanzaId, lang = Lang} = Packet}, StateData) -> case {(StateData#state.config)#config.allow_query_users, is_user_online_iq(StanzaId, From, StateData)} of {true, {true, NewId, FromFull}} -> case find_jid_by_nick(ToNick, StateData) of false -> ErrText = <<"Recipient is not in the conference room">>, Err = xmpp:err_item_not_found(ErrText, Lang), ejabberd_router:route_error( jid:replace_resource(StateData#state.jid, ToNick), From, Packet, Err); ToJID -> {ok, #user{nick = FromNick}} = (?DICT):find(jid:tolower(FromFull), StateData#state.users), {ToJID2, Packet2} = handle_iq_vcard(ToJID, NewId, Packet), ejabberd_router:route( jid:replace_resource(StateData#state.jid, FromNick), ToJID2, Packet2) end; {_, {false, _, _}} -> ErrText = <<"Only occupants are allowed to send queries " "to the conference">>, Err = xmpp:err_not_acceptable(ErrText, Lang), ejabberd_router:route_error( jid:replace_resource(StateData#state.jid, ToNick), From, Packet, Err); _ -> ErrText = <<"Queries to the conference members are " "not allowed in this room">>, Err = xmpp:err_not_allowed(ErrText, Lang), ejabberd_router:route_error( jid:replace_resource(StateData#state.jid, ToNick), From, Packet, Err) end, {next_state, normal_state, StateData}; normal_state(_Event, StateData) -> {next_state, normal_state, StateData}. handle_event({service_message, Msg}, _StateName, StateData) -> MessagePkt = #message{type = groupchat, body = xmpp:mk_text(Msg)}, send_wrapped_multiple( StateData#state.jid, get_users_and_subscribers(StateData), MessagePkt, ?NS_MUCSUB_NODES_MESSAGES, StateData), NSD = add_message_to_history(<<"">>, StateData#state.jid, MessagePkt, StateData), {next_state, normal_state, NSD}; handle_event({destroy, Reason}, _StateName, StateData) -> {result, undefined, stop} = destroy_room(#muc_destroy{xmlns = ?NS_MUC_OWNER, reason = Reason}, StateData), ?INFO_MSG("Destroyed MUC room ~s with reason: ~p", [jid:to_string(StateData#state.jid), Reason]), add_to_log(room_existence, destroyed, StateData), {stop, shutdown, StateData}; handle_event(destroy, StateName, StateData) -> ?INFO_MSG("Destroyed MUC room ~s", [jid:to_string(StateData#state.jid)]), handle_event({destroy, undefined}, StateName, StateData); handle_event({set_affiliations, Affiliations}, StateName, StateData) -> {next_state, StateName, StateData#state{affiliations = Affiliations}}; handle_event(_Event, StateName, StateData) -> {next_state, StateName, StateData}. handle_sync_event({get_disco_item, Filter, JID, Lang}, _From, StateName, StateData) -> Len = ?DICT:size(StateData#state.users), Reply = case (Filter == all) or (Filter == Len) or ((Filter /= 0) and (Len /= 0)) of true -> get_roomdesc_reply(JID, StateData, get_roomdesc_tail(StateData, Lang)); false -> false end, {reply, Reply, StateName, StateData}; %% This clause is only for backwards compatibility handle_sync_event({get_disco_item, JID, Lang}, From, StateName, StateData) -> handle_sync_event({get_disco_item, any, JID, Lang}, From, StateName, StateData); handle_sync_event(get_config, _From, StateName, StateData) -> {reply, {ok, StateData#state.config}, StateName, StateData}; handle_sync_event(get_state, _From, StateName, StateData) -> {reply, {ok, StateData}, StateName, StateData}; handle_sync_event({change_config, Config}, _From, StateName, StateData) -> {result, undefined, NSD} = change_config(Config, StateData), {reply, {ok, NSD#state.config}, StateName, NSD}; handle_sync_event({change_state, NewStateData}, _From, StateName, _StateData) -> {reply, {ok, NewStateData}, StateName, NewStateData}; handle_sync_event({process_item_change, Item, UJID}, _From, StateName, StateData) -> case process_item_change(Item, StateData, UJID) of {error, _} = Err -> {reply, Err, StateName, StateData}; NSD -> {reply, {ok, NSD}, StateName, NSD} end; handle_sync_event(get_subscribers, _From, StateName, StateData) -> JIDs = lists:map(fun jid:make/1, ?DICT:fetch_keys(StateData#state.subscribers)), {reply, {ok, JIDs}, StateName, StateData}; handle_sync_event({muc_subscribe, From, Nick, Nodes}, _From, StateName, StateData) -> IQ = #iq{type = set, id = randoms:get_string(), from = From, sub_els = [#muc_subscribe{nick = Nick, events = Nodes}]}, Config = StateData#state.config, CaptchaRequired = Config#config.captcha_protected, PasswordProtected = Config#config.password_protected, TmpConfig = Config#config{captcha_protected = false, password_protected = false}, TmpState = StateData#state{config = TmpConfig}, case process_iq_mucsub(From, IQ, TmpState) of {result, #muc_subscribe{events = NewNodes}, NewState} -> NewConfig = (NewState#state.config)#config{ captcha_protected = CaptchaRequired, password_protected = PasswordProtected}, {reply, {ok, NewNodes}, StateName, NewState#state{config = NewConfig}}; {ignore, NewState} -> NewConfig = (NewState#state.config)#config{ captcha_protected = CaptchaRequired, password_protected = PasswordProtected}, {reply, {error, <<"Requrest is ignored">>}, NewState#state{config = NewConfig}}; {error, Err, NewState} -> NewConfig = (NewState#state.config)#config{ captcha_protected = CaptchaRequired, password_protected = PasswordProtected}, {reply, {error, get_error_text(Err)}, StateName, NewState#state{config = NewConfig}}; {error, Err} -> {reply, {error, get_error_text(Err)}, StateName, StateData} end; handle_sync_event({muc_unsubscribe, From}, _From, StateName, StateData) -> IQ = #iq{type = set, id = randoms:get_string(), from = From, sub_els = [#muc_unsubscribe{}]}, case process_iq_mucsub(From, IQ, StateData) of {result, _, NewState} -> {reply, ok, StateName, NewState}; {ignore, NewState} -> {reply, {error, <<"Requrest is ignored">>}, NewState}; {error, Err, NewState} -> {reply, {error, get_error_text(Err)}, StateName, NewState}; {error, Err} -> {reply, {error, get_error_text(Err)}, StateName, StateData} end; handle_sync_event({is_subscribed, From}, _From, StateName, StateData) -> IsSubs = ?DICT:is_key(jid:split(From), StateData#state.subscribers), {reply, IsSubs, StateName, StateData}; handle_sync_event(_Event, _From, StateName, StateData) -> Reply = ok, {reply, Reply, StateName, StateData}. code_change(_OldVsn, StateName, StateData, _Extra) -> {ok, StateName, StateData}. handle_info({process_user_presence, From}, normal_state = _StateName, StateData) -> RoomQueueEmpty = queue:is_empty(StateData#state.room_queue), RoomQueue = queue:in({presence, From}, StateData#state.room_queue), StateData1 = StateData#state{room_queue = RoomQueue}, if RoomQueueEmpty -> StateData2 = prepare_room_queue(StateData1), {next_state, normal_state, StateData2}; true -> {next_state, normal_state, StateData1} end; handle_info({process_user_message, From}, normal_state = _StateName, StateData) -> RoomQueueEmpty = queue:is_empty(StateData#state.room_queue), RoomQueue = queue:in({message, From}, StateData#state.room_queue), StateData1 = StateData#state{room_queue = RoomQueue}, if RoomQueueEmpty -> StateData2 = prepare_room_queue(StateData1), {next_state, normal_state, StateData2}; true -> {next_state, normal_state, StateData1} end; handle_info(process_room_queue, normal_state = StateName, StateData) -> case queue:out(StateData#state.room_queue) of {{value, {message, From}}, RoomQueue} -> Activity = get_user_activity(From, StateData), Packet = Activity#activity.message, NewActivity = Activity#activity{message = undefined}, StateData1 = store_user_activity(From, NewActivity, StateData), StateData2 = StateData1#state{room_queue = RoomQueue}, StateData3 = prepare_room_queue(StateData2), process_groupchat_message(From, Packet, StateData3); {{value, {presence, From}}, RoomQueue} -> Activity = get_user_activity(From, StateData), {Nick, Packet} = Activity#activity.presence, NewActivity = Activity#activity{presence = undefined}, StateData1 = store_user_activity(From, NewActivity, StateData), StateData2 = StateData1#state{room_queue = RoomQueue}, StateData3 = prepare_room_queue(StateData2), process_presence(From, Nick, Packet, StateData3); {empty, _} -> {next_state, StateName, StateData} end; handle_info({captcha_succeed, From}, normal_state, StateData) -> NewState = case (?DICT):find(From, StateData#state.robots) of {ok, {Nick, Packet}} -> Robots = (?DICT):store(From, passed, StateData#state.robots), add_new_user(From, Nick, Packet, StateData#state{robots = Robots}); _ -> StateData end, {next_state, normal_state, NewState}; handle_info({captcha_failed, From}, normal_state, StateData) -> NewState = case (?DICT):find(From, StateData#state.robots) of {ok, {Nick, Packet}} -> Robots = (?DICT):erase(From, StateData#state.robots), Txt = <<"The CAPTCHA verification has failed">>, Lang = xmpp:get_lang(Packet), Err = xmpp:err_not_authorized(Txt, Lang), ejabberd_router:route_error( jid:replace_resource(StateData#state.jid, Nick), From, Packet, Err), StateData#state{robots = Robots}; _ -> StateData end, {next_state, normal_state, NewState}; handle_info(shutdown, _StateName, StateData) -> {stop, shutdown, StateData}; handle_info(_Info, StateName, StateData) -> {next_state, StateName, StateData}. terminate(Reason, _StateName, StateData) -> ?INFO_MSG("Stopping MUC room ~s@~s", [StateData#state.room, StateData#state.host]), ReasonT = case Reason of shutdown -> <<"You are being removed from the room " "because of a system shutdown">>; _ -> <<"Room terminates">> end, Packet = #presence{ type = unavailable, sub_els = [#muc_user{items = [#muc_item{affiliation = none, reason = ReasonT, role = none}], status_codes = [332]}]}, (?DICT):fold(fun (LJID, Info, _) -> Nick = Info#user.nick, case Reason of shutdown -> send_wrapped(jid:replace_resource(StateData#state.jid, Nick), Info#user.jid, Packet, ?NS_MUCSUB_NODES_PARTICIPANTS, StateData); _ -> ok end, tab_remove_online_user(LJID, StateData) end, [], get_users_and_subscribers(StateData)), add_to_log(room_existence, stopped, StateData), mod_muc:room_destroyed(StateData#state.host, StateData#state.room, self(), StateData#state.server_host), ok. %%%---------------------------------------------------------------------- %%% Internal functions %%%---------------------------------------------------------------------- -spec route(pid(), jid(), binary(), stanza()) -> ok. route(Pid, From, ToNick, Packet) -> gen_fsm:send_event(Pid, {route, From, ToNick, Packet}). -spec process_groupchat_message(jid(), message(), state()) -> fsm_next(). process_groupchat_message(From, #message{lang = Lang} = Packet, StateData) -> IsSubscriber = is_subscriber(From, StateData), case is_user_online(From, StateData) orelse IsSubscriber orelse is_user_allowed_message_nonparticipant(From, StateData) of true -> {FromNick, Role} = get_participant_data(From, StateData), if (Role == moderator) or (Role == participant) or IsSubscriber or ((StateData#state.config)#config.moderated == false) -> Subject = check_subject(Packet), {NewStateData1, IsAllowed} = case Subject of false -> {StateData, true}; _ -> case can_change_subject(Role, IsSubscriber, StateData) of true -> NSD = StateData#state{subject = Subject, subject_author = FromNick}, store_room(NSD), {NSD, true}; _ -> {StateData, false} end end, case IsAllowed of true -> case ejabberd_hooks:run_fold(muc_filter_message, StateData#state.server_host, Packet, [StateData, StateData#state.jid, From, FromNick]) of drop -> {next_state, normal_state, StateData}; NewPacket1 -> NewPacket = xmpp:remove_subtag(NewPacket1, #nick{}), Node = if Subject == false -> ?NS_MUCSUB_NODES_MESSAGES; true -> ?NS_MUCSUB_NODES_SUBJECT end, send_wrapped_multiple( jid:replace_resource(StateData#state.jid, FromNick), get_users_and_subscribers(StateData), NewPacket, Node, NewStateData1), NewStateData2 = case has_body_or_subject(NewPacket) of true -> add_message_to_history(FromNick, From, NewPacket, NewStateData1); false -> NewStateData1 end, {next_state, normal_state, NewStateData2} end; _ -> Err = case (StateData#state.config)#config.allow_change_subj of true -> xmpp:err_forbidden( <<"Only moderators and participants are " "allowed to change the subject in this " "room">>, Lang); _ -> xmpp:err_forbidden( <<"Only moderators are allowed to change " "the subject in this room">>, Lang) end, ejabberd_router:route_error( StateData#state.jid, From, Packet, Err), {next_state, normal_state, StateData} end; true -> ErrText = <<"Visitors are not allowed to send messages " "to all occupants">>, Err = xmpp:err_forbidden(ErrText, Lang), ejabberd_router:route_error( StateData#state.jid, From, Packet, Err), {next_state, normal_state, StateData} end; false -> ErrText = <<"Only occupants are allowed to send messages " "to the conference">>, Err = xmpp:err_not_acceptable(ErrText, Lang), ejabberd_router:route_error(StateData#state.jid, From, Packet, Err), {next_state, normal_state, StateData} end. -spec process_normal_message(jid(), message(), state()) -> state(). process_normal_message(From, #message{lang = Lang} = Pkt, StateData) -> Action = lists:foldl( fun(_, {error, _} = Err) -> Err; (#muc_user{invites = [#muc_invite{to = undefined}]}, _) -> Txt = <<"No 'to' attribute found">>, {error, xmpp:err_bad_request(Txt, Lang)}; (#muc_user{invites = [I]}, _) -> {ok, I}; (#muc_user{invites = [_|_]}, _) -> Txt = <<"Multiple invitations are not allowed">>, {error, xmpp:err_resource_constraint(Txt, Lang)}; (#xdata{type = submit, fields = Fs}, _) -> try {ok, muc_request:decode(Fs)} catch _:{muc_request, Why} -> Txt = muc_request:format_error(Why), {error, xmpp:err_bad_request(Txt, Lang)} end; (_, Acc) -> Acc end, ok, xmpp:get_els(Pkt)), case Action of {ok, #muc_invite{} = Invitation} -> process_invitation(From, Pkt, Invitation, StateData); {ok, [{role, participant}]} -> process_voice_request(From, Pkt, StateData); {ok, VoiceApproval} -> process_voice_approval(From, Pkt, VoiceApproval, StateData); {error, Err} -> ejabberd_router:route_error(StateData#state.jid, From, Pkt, Err), StateData; ok -> StateData end. -spec process_invitation(jid(), message(), muc_invite(), state()) -> state(). process_invitation(From, Pkt, Invitation, StateData) -> Lang = xmpp:get_lang(Pkt), case check_invitation(From, Invitation, Lang, StateData) of {error, Error} -> ejabberd_router:route_error(StateData#state.jid, From, Pkt, Error), StateData; IJID -> Config = StateData#state.config, case Config#config.members_only of true -> case get_affiliation(IJID, StateData) of none -> NSD = set_affiliation(IJID, member, StateData), send_affiliation(IJID, member, StateData), store_room(NSD), NSD; _ -> StateData end; false -> StateData end end. -spec process_voice_request(jid(), message(), state()) -> state(). process_voice_request(From, Pkt, StateData) -> Lang = xmpp:get_lang(Pkt), case (StateData#state.config)#config.allow_voice_requests of true -> MinInterval = (StateData#state.config)#config.voice_request_min_interval, BareFrom = jid:remove_resource(jid:tolower(From)), NowPriority = -p1_time_compat:system_time(micro_seconds), CleanPriority = NowPriority + MinInterval * 1000000, Times = clean_treap(StateData#state.last_voice_request_time, CleanPriority), case treap:lookup(BareFrom, Times) of error -> Times1 = treap:insert(BareFrom, NowPriority, true, Times), NSD = StateData#state{last_voice_request_time = Times1}, send_voice_request(From, Lang, NSD), NSD; {ok, _, _} -> ErrText = <<"Please, wait for a while before sending " "new voice request">>, Err = xmpp:err_resource_constraint(ErrText, Lang), ejabberd_router:route_error( StateData#state.jid, From, Pkt, Err), StateData#state{last_voice_request_time = Times} end; false -> ErrText = <<"Voice requests are disabled in this conference">>, Err = xmpp:err_forbidden(ErrText, Lang), ejabberd_router:route_error( StateData#state.jid, From, Pkt, Err), StateData end. -spec process_voice_approval(jid(), message(), [muc_request:property()], state()) -> state(). process_voice_approval(From, Pkt, VoiceApproval, StateData) -> Lang = xmpp:get_lang(Pkt), case is_moderator(From, StateData) of true -> case lists:keyfind(jid, 1, VoiceApproval) of {_, TargetJid} -> Allow = proplists:get_bool(request_allow, VoiceApproval), case is_visitor(TargetJid, StateData) of true when Allow -> Reason = <<>>, NSD = set_role(TargetJid, participant, StateData), catch send_new_presence( TargetJid, Reason, NSD, StateData), NSD; _ -> StateData end; false -> ErrText = <<"Failed to extract JID from your voice " "request approval">>, Err = xmpp:err_bad_request(ErrText, Lang), ejabberd_router:route_error( StateData#state.jid, From, Pkt, Err), StateData end; false -> ErrText = <<"Only moderators can approve voice requests">>, Err = xmpp:err_not_allowed(ErrText, Lang), ejabberd_router:route_error( StateData#state.jid, From, Pkt, Err), StateData end. %% @doc Check if this non participant can send message to room. %% %% XEP-0045 v1.23: %% 7.9 Sending a Message to All Occupants %% an implementation MAY allow users with certain privileges %% (e.g., a room owner, room admin, or service-level admin) %% to send messages to the room even if those users are not occupants. -spec is_user_allowed_message_nonparticipant(jid(), state()) -> boolean(). is_user_allowed_message_nonparticipant(JID, StateData) -> case get_service_affiliation(JID, StateData) of owner -> true; _ -> false end. %% @doc Get information of this participant, or default values. %% If the JID is not a participant, return values for a service message. -spec get_participant_data(jid(), state()) -> {binary(), role()}. get_participant_data(From, StateData) -> case (?DICT):find(jid:tolower(From), StateData#state.users) of {ok, #user{nick = FromNick, role = Role}} -> {FromNick, Role}; error -> case ?DICT:find(jid:tolower(jid:remove_resource(From)), StateData#state.subscribers) of {ok, #subscriber{nick = FromNick}} -> {FromNick, none}; error -> {<<"">>, moderator} end end. -spec process_presence(jid(), binary(), presence(), state()) -> fsm_transition(). process_presence(From, Nick, #presence{type = Type0} = Packet0, StateData) -> IsOnline = is_user_online(From, StateData), if Type0 == available; IsOnline and ((Type0 == unavailable) or (Type0 == error)) -> case ejabberd_hooks:run_fold(muc_filter_presence, StateData#state.server_host, Packet0, [StateData, StateData#state.jid, From, Nick]) of drop -> {next_state, normal_state, StateData}; #presence{} = Packet -> close_room_if_temporary_and_empty( do_process_presence(From, Nick, Packet, StateData)) end; true -> {next_state, normal_state, StateData} end. -spec do_process_presence(jid(), binary(), presence(), state()) -> state(). do_process_presence(From, Nick, #presence{type = available, lang = Lang} = Packet, StateData) -> case is_user_online(From, StateData) of false -> add_new_user(From, Nick, Packet, StateData); true -> case is_nick_change(From, Nick, StateData) of true -> case {nick_collision(From, Nick, StateData), mod_muc:can_use_nick(StateData#state.server_host, StateData#state.host, From, Nick), {(StateData#state.config)#config.allow_visitor_nickchange, is_visitor(From, StateData)}} of {_, _, {false, true}} -> ErrText = <<"Visitors are not allowed to change their " "nicknames in this room">>, Err = xmpp:err_not_allowed(ErrText, Lang), ejabberd_router:route_error( jid:replace_resource(StateData#state.jid, Nick), From, Packet, Err), StateData; {true, _, _} -> ErrText = <<"That nickname is already in use by another " "occupant">>, Err = xmpp:err_conflict(ErrText, Lang), ejabberd_router:route_error( jid:replace_resource(StateData#state.jid, Nick), From, Packet, Err), StateData; {_, false, _} -> ErrText = <<"That nickname is registered by another " "person">>, Err = xmpp:err_conflict(ErrText, Lang), ejabberd_router:route_error( jid:replace_resource(StateData#state.jid, Nick), From, Packet, Err), StateData; _ -> change_nick(From, Nick, StateData) end; false -> Stanza = maybe_strip_status_from_presence( From, Packet, StateData), NewState = add_user_presence(From, Stanza, StateData), send_new_presence(From, NewState, StateData), NewState end end; do_process_presence(From, Nick, #presence{type = unavailable} = Packet, StateData) -> NewPacket = case {(StateData#state.config)#config.allow_visitor_status, is_visitor(From, StateData)} of {false, true} -> strip_status(Packet); _ -> Packet end, NewState = add_user_presence_un(From, NewPacket, StateData), case (?DICT):find(Nick, StateData#state.nicks) of {ok, [_, _ | _]} -> ok; _ -> send_new_presence(From, NewState, StateData) end, Reason = xmpp:get_text(NewPacket#presence.status), remove_online_user(From, NewState, Reason); do_process_presence(From, _Nick, #presence{type = error, lang = Lang} = Packet, StateData) -> ErrorText = <<"It is not allowed to send error messages to the" " room. The participant (~s) has sent an error " "message (~s) and got kicked from the room">>, expulse_participant(Packet, From, StateData, translate:translate(Lang, ErrorText)). -spec maybe_strip_status_from_presence(jid(), presence(), state()) -> presence(). maybe_strip_status_from_presence(From, Packet, StateData) -> case {(StateData#state.config)#config.allow_visitor_status, is_visitor(From, StateData)} of {false, true} -> strip_status(Packet); _Allowed -> Packet end. -spec close_room_if_temporary_and_empty(state()) -> fsm_transition(). close_room_if_temporary_and_empty(StateData1) -> case not (StateData1#state.config)#config.persistent andalso (?DICT):size(StateData1#state.users) == 0 andalso (?DICT):size(StateData1#state.subscribers) == 0 of true -> ?INFO_MSG("Destroyed MUC room ~s because it's temporary " "and empty", [jid:to_string(StateData1#state.jid)]), add_to_log(room_existence, destroyed, StateData1), {stop, normal, StateData1}; _ -> {next_state, normal_state, StateData1} end. get_users_and_subscribers(StateData) -> OnlineSubscribers = ?DICT:fold( fun(LJID, _, Acc) -> LBareJID = jid:remove_resource(LJID), case is_subscriber(LBareJID, StateData) of true -> ?SETS:add_element(LBareJID, Acc); false -> Acc end end, ?SETS:new(), StateData#state.users), ?DICT:fold( fun(LBareJID, #subscriber{nick = Nick}, Acc) -> case ?SETS:is_element(LBareJID, OnlineSubscribers) of false -> ?DICT:store(LBareJID, #user{jid = jid:make(LBareJID), nick = Nick, role = none, last_presence = undefined}, Acc); true -> Acc end end, StateData#state.users, StateData#state.subscribers). -spec is_user_online(jid(), state()) -> boolean(). is_user_online(JID, StateData) -> LJID = jid:tolower(JID), (?DICT):is_key(LJID, StateData#state.users). -spec is_subscriber(jid(), state()) -> boolean(). is_subscriber(JID, StateData) -> LJID = jid:tolower(jid:remove_resource(JID)), (?DICT):is_key(LJID, StateData#state.subscribers). %% Check if the user is occupant of the room, or at least is an admin or owner. -spec is_occupant_or_admin(jid(), state()) -> boolean(). is_occupant_or_admin(JID, StateData) -> FAffiliation = get_affiliation(JID, StateData), FRole = get_role(JID, StateData), case FRole /= none orelse FAffiliation == member orelse FAffiliation == admin orelse FAffiliation == owner of true -> true; _ -> false end. %%% %%% Handle IQ queries of vCard %%% -spec is_user_online_iq(binary(), jid(), state()) -> {boolean(), binary(), jid()}. is_user_online_iq(StanzaId, JID, StateData) when JID#jid.lresource /= <<"">> -> {is_user_online(JID, StateData), StanzaId, JID}; is_user_online_iq(StanzaId, JID, StateData) when JID#jid.lresource == <<"">> -> try stanzaid_unpack(StanzaId) of {OriginalId, Resource} -> JIDWithResource = jid:replace_resource(JID, Resource), {is_user_online(JIDWithResource, StateData), OriginalId, JIDWithResource} catch _:_ -> {is_user_online(JID, StateData), StanzaId, JID} end. -spec handle_iq_vcard(jid(), binary(), iq()) -> {jid(), iq()}. handle_iq_vcard(ToJID, NewId, #iq{type = Type, sub_els = SubEls} = IQ) -> ToBareJID = jid:remove_resource(ToJID), case SubEls of [SubEl] when Type == get, ToBareJID /= ToJID -> case xmpp:get_ns(SubEl) of ?NS_VCARD -> {ToBareJID, change_stanzaid(ToJID, IQ)}; _ -> {ToJID, xmpp:set_id(IQ, NewId)} end; _ -> {ToJID, xmpp:set_id(IQ, NewId)} end. -spec stanzaid_pack(binary(), binary()) -> binary(). stanzaid_pack(OriginalId, Resource) -> <<"berd", (jlib:encode_base64(<<"ejab\000", OriginalId/binary, "\000", Resource/binary>>))/binary>>. -spec stanzaid_unpack(binary()) -> {binary(), binary()}. stanzaid_unpack(<<"berd", StanzaIdBase64/binary>>) -> StanzaId = jlib:decode_base64(StanzaIdBase64), [<<"ejab">>, OriginalId, Resource] = str:tokens(StanzaId, <<"\000">>), {OriginalId, Resource}. -spec change_stanzaid(jid(), iq()) -> iq(). change_stanzaid(ToJID, #iq{id = PreviousId} = Packet) -> NewId = stanzaid_pack(PreviousId, ToJID#jid.lresource), xmpp:set_id(Packet, NewId). %% Decide the fate of the message and its sender %% Returns: continue_delivery | forget_message | {expulse_sender, Reason} -spec decide_fate_message(message(), jid(), state()) -> continue_delivery | forget_message | {expulse_sender, binary()}. decide_fate_message(#message{type = error} = Msg, From, StateData) -> Err = xmpp:get_error(Msg), PD = case check_error_kick(Err) of %% If this is an error stanza and its condition matches a criteria true -> Reason = str:format("This participant is considered a ghost " "and is expulsed: ~s", [jid:to_string(From)]), {expulse_sender, Reason}; false -> continue_delivery end, case PD of {expulse_sender, R} -> case is_user_online(From, StateData) of true -> {expulse_sender, R}; false -> forget_message end; Other -> Other end; decide_fate_message(_, _, _) -> continue_delivery. %% Check if the elements of this error stanza indicate %% that the sender is a dead participant. %% If so, return true to kick the participant. -spec check_error_kick(stanza_error()) -> boolean(). check_error_kick(#stanza_error{reason = Reason}) -> case Reason of #gone{} -> true; 'internal-server-error' -> true; 'item-not-found' -> true; 'jid-malformed' -> true; 'recipient-unavailable' -> true; #redirect{} -> true; 'remote-server-not-found' -> true; 'remote-server-timeout' -> true; 'service-unavailable' -> true; _ -> false end; check_error_kick(undefined) -> false. -spec get_error_condition(stanza_error()) -> string(). get_error_condition(#stanza_error{reason = Reason}) -> case Reason of #gone{} -> "gone"; #redirect{} -> "redirect"; Atom -> atom_to_list(Atom) end; get_error_condition(undefined) -> "undefined". get_error_text(Error) -> case fxml:get_subtag_with_xmlns(Error, <<"text">>, ?NS_STANZAS) of #xmlel{} = Tag -> fxml:get_tag_cdata(Tag); false -> <<"">> end. -spec make_reason(stanza(), jid(), state(), binary()) -> binary(). make_reason(Packet, From, StateData, Reason1) -> {ok, #user{nick = FromNick}} = (?DICT):find(jid:tolower(From), StateData#state.users), Condition = get_error_condition(xmpp:get_error(Packet)), str:format(Reason1, [FromNick, Condition]). -spec expulse_participant(stanza(), jid(), state(), binary()) -> state(). expulse_participant(Packet, From, StateData, Reason1) -> Reason2 = make_reason(Packet, From, StateData, Reason1), NewState = add_user_presence_un(From, #presence{type = unavailable, status = xmpp:mk_text(Reason2)}, StateData), send_new_presence(From, NewState, StateData), remove_online_user(From, NewState). -spec set_affiliation(jid(), affiliation(), state()) -> state(). set_affiliation(JID, Affiliation, StateData) -> set_affiliation(JID, Affiliation, StateData, <<"">>). -spec set_affiliation(jid(), affiliation(), state(), binary()) -> state(). set_affiliation(JID, Affiliation, StateData, Reason) -> LJID = jid:remove_resource(jid:tolower(JID)), Affiliations = case Affiliation of none -> (?DICT):erase(LJID, StateData#state.affiliations); _ -> (?DICT):store(LJID, {Affiliation, Reason}, StateData#state.affiliations) end, StateData#state{affiliations = Affiliations}. -spec get_affiliation(jid(), state()) -> affiliation(). get_affiliation(JID, StateData) -> {_AccessRoute, _AccessCreate, AccessAdmin, _AccessPersistent} = StateData#state.access, Res = case acl:match_rule(StateData#state.server_host, AccessAdmin, JID) of allow -> owner; _ -> LJID = jid:tolower(JID), case (?DICT):find(LJID, StateData#state.affiliations) of {ok, Affiliation} -> Affiliation; _ -> LJID1 = jid:remove_resource(LJID), case (?DICT):find(LJID1, StateData#state.affiliations) of {ok, Affiliation} -> Affiliation; _ -> LJID2 = setelement(1, LJID, <<"">>), case (?DICT):find(LJID2, StateData#state.affiliations) of {ok, Affiliation} -> Affiliation; _ -> LJID3 = jid:remove_resource(LJID2), case (?DICT):find(LJID3, StateData#state.affiliations) of {ok, Affiliation} -> Affiliation; _ -> none end end end end end, case Res of {A, _Reason} -> A; _ -> Res end. -spec get_service_affiliation(jid(), state()) -> owner | none. get_service_affiliation(JID, StateData) -> {_AccessRoute, _AccessCreate, AccessAdmin, _AccessPersistent} = StateData#state.access, case acl:match_rule(StateData#state.server_host, AccessAdmin, JID) of allow -> owner; _ -> none end. -spec set_role(jid(), role(), state()) -> state(). set_role(JID, Role, StateData) -> LJID = jid:tolower(JID), LJIDs = case LJID of {U, S, <<"">>} -> (?DICT):fold(fun (J, _, Js) -> case J of {U, S, _} -> [J | Js]; _ -> Js end end, [], StateData#state.users); _ -> case (?DICT):is_key(LJID, StateData#state.users) of true -> [LJID]; _ -> [] end end, {Users, Nicks} = case Role of none -> lists:foldl(fun (J, {Us, Ns}) -> NewNs = case (?DICT):find(J, Us) of {ok, #user{nick = Nick}} -> (?DICT):erase(Nick, Ns); _ -> Ns end, {(?DICT):erase(J, Us), NewNs} end, {StateData#state.users, StateData#state.nicks}, LJIDs); _ -> {lists:foldl( fun (J, Us) -> {ok, User} = (?DICT):find(J, Us), if User#user.last_presence == undefined -> Us; true -> (?DICT):store(J, User#user{role = Role}, Us) end end, StateData#state.users, LJIDs), StateData#state.nicks} end, StateData#state{users = Users, nicks = Nicks}. -spec get_role(jid(), state()) -> role(). get_role(JID, StateData) -> LJID = jid:tolower(JID), case (?DICT):find(LJID, StateData#state.users) of {ok, #user{role = Role}} -> Role; _ -> none end. -spec get_default_role(affiliation(), state()) -> role(). get_default_role(Affiliation, StateData) -> case Affiliation of owner -> moderator; admin -> moderator; member -> participant; outcast -> none; none -> case (StateData#state.config)#config.members_only of true -> none; _ -> case (StateData#state.config)#config.members_by_default of true -> participant; _ -> visitor end end end. -spec is_visitor(jid(), state()) -> boolean(). is_visitor(Jid, StateData) -> get_role(Jid, StateData) =:= visitor. -spec is_moderator(jid(), state()) -> boolean(). is_moderator(Jid, StateData) -> get_role(Jid, StateData) =:= moderator. -spec get_max_users(state()) -> non_neg_integer(). get_max_users(StateData) -> MaxUsers = (StateData#state.config)#config.max_users, ServiceMaxUsers = get_service_max_users(StateData), if MaxUsers =< ServiceMaxUsers -> MaxUsers; true -> ServiceMaxUsers end. -spec get_service_max_users(state()) -> pos_integer(). get_service_max_users(StateData) -> gen_mod:get_module_opt(StateData#state.server_host, mod_muc, max_users, fun(I) when is_integer(I), I>0 -> I end, ?MAX_USERS_DEFAULT). -spec get_max_users_admin_threshold(state()) -> pos_integer(). get_max_users_admin_threshold(StateData) -> gen_mod:get_module_opt(StateData#state.server_host, mod_muc, max_users_admin_threshold, fun(I) when is_integer(I), I>0 -> I end, 5). -spec get_user_activity(jid(), state()) -> #activity{}. get_user_activity(JID, StateData) -> case treap:lookup(jid:tolower(JID), StateData#state.activity) of {ok, _P, A} -> A; error -> MessageShaper = shaper:new(gen_mod:get_module_opt(StateData#state.server_host, mod_muc, user_message_shaper, fun(A) when is_atom(A) -> A end, none)), PresenceShaper = shaper:new(gen_mod:get_module_opt(StateData#state.server_host, mod_muc, user_presence_shaper, fun(A) when is_atom(A) -> A end, none)), #activity{message_shaper = MessageShaper, presence_shaper = PresenceShaper} end. -spec store_user_activity(jid(), #activity{}, state()) -> state(). store_user_activity(JID, UserActivity, StateData) -> MinMessageInterval = trunc(gen_mod:get_module_opt(StateData#state.server_host, mod_muc, min_message_interval, fun(I) when is_number(I), I>=0 -> I end, 0) * 1000), MinPresenceInterval = trunc(gen_mod:get_module_opt(StateData#state.server_host, mod_muc, min_presence_interval, fun(I) when is_number(I), I>=0 -> I end, 0) * 1000), Key = jid:tolower(JID), Now = p1_time_compat:system_time(micro_seconds), Activity1 = clean_treap(StateData#state.activity, {1, -Now}), Activity = case treap:lookup(Key, Activity1) of {ok, _P, _A} -> treap:delete(Key, Activity1); error -> Activity1 end, StateData1 = case MinMessageInterval == 0 andalso MinPresenceInterval == 0 andalso UserActivity#activity.message_shaper == none andalso UserActivity#activity.presence_shaper == none andalso UserActivity#activity.message == undefined andalso UserActivity#activity.presence == undefined of true -> StateData#state{activity = Activity}; false -> case UserActivity#activity.message == undefined andalso UserActivity#activity.presence == undefined of true -> {_, MessageShaperInterval} = shaper:update(UserActivity#activity.message_shaper, 100000), {_, PresenceShaperInterval} = shaper:update(UserActivity#activity.presence_shaper, 100000), Delay = lists:max([MessageShaperInterval, PresenceShaperInterval, MinMessageInterval, MinPresenceInterval]) * 1000, Priority = {1, -(Now + Delay)}, StateData#state{activity = treap:insert(Key, Priority, UserActivity, Activity)}; false -> Priority = {0, 0}, StateData#state{activity = treap:insert(Key, Priority, UserActivity, Activity)} end end, StateData1. -spec clean_treap(treap:treap(), integer()) -> treap:treap(). clean_treap(Treap, CleanPriority) -> case treap:is_empty(Treap) of true -> Treap; false -> {_Key, Priority, _Value} = treap:get_root(Treap), if Priority > CleanPriority -> clean_treap(treap:delete_root(Treap), CleanPriority); true -> Treap end end. -spec prepare_room_queue(state()) -> state(). prepare_room_queue(StateData) -> case queue:out(StateData#state.room_queue) of {{value, {message, From}}, _RoomQueue} -> Activity = get_user_activity(From, StateData), Packet = Activity#activity.message, Size = element_size(Packet), {RoomShaper, RoomShaperInterval} = shaper:update(StateData#state.room_shaper, Size), erlang:send_after(RoomShaperInterval, self(), process_room_queue), StateData#state{room_shaper = RoomShaper}; {{value, {presence, From}}, _RoomQueue} -> Activity = get_user_activity(From, StateData), {_Nick, Packet} = Activity#activity.presence, Size = element_size(Packet), {RoomShaper, RoomShaperInterval} = shaper:update(StateData#state.room_shaper, Size), erlang:send_after(RoomShaperInterval, self(), process_room_queue), StateData#state{room_shaper = RoomShaper}; {empty, _} -> StateData end. -spec update_online_user(jid(), #user{}, state()) -> state(). update_online_user(JID, #user{nick = Nick} = User, StateData) -> LJID = jid:tolower(JID), Nicks1 = case (?DICT):find(LJID, StateData#state.users) of {ok, #user{nick = OldNick}} -> case lists:delete( LJID, ?DICT:fetch(OldNick, StateData#state.nicks)) of [] -> ?DICT:erase(OldNick, StateData#state.nicks); LJIDs -> ?DICT:store(OldNick, LJIDs, StateData#state.nicks) end; error -> StateData#state.nicks end, Nicks = (?DICT):update(Nick, fun (LJIDs) -> [LJID|LJIDs -- [LJID]] end, [LJID], Nicks1), Users = (?DICT):update(LJID, fun(U) -> U#user{nick = Nick} end, User, StateData#state.users), NewStateData = StateData#state{users = Users, nicks = Nicks}, case {?DICT:find(LJID, StateData#state.users), ?DICT:find(LJID, NewStateData#state.users)} of {{ok, #user{nick = Old}}, {ok, #user{nick = New}}} when Old /= New -> send_nick_changing(JID, Old, NewStateData, true, true); _ -> ok end, NewStateData. set_subscriber(JID, Nick, Nodes, StateData) -> BareJID = jid:remove_resource(JID), LBareJID = jid:tolower(BareJID), Subscribers = ?DICT:store(LBareJID, #subscriber{jid = BareJID, nick = Nick, nodes = Nodes}, StateData#state.subscribers), Nicks = ?DICT:store(Nick, [LBareJID], StateData#state.subscriber_nicks), NewStateData = StateData#state{subscribers = Subscribers, subscriber_nicks = Nicks}, store_room(NewStateData), NewStateData. -spec add_online_user(jid(), binary(), role(), state()) -> state(). add_online_user(JID, Nick, Role, StateData) -> tab_add_online_user(JID, StateData), User = #user{jid = JID, nick = Nick, role = Role}, update_online_user(JID, User, StateData). -spec remove_online_user(jid(), state()) -> state(). remove_online_user(JID, StateData) -> remove_online_user(JID, StateData, <<"">>). -spec remove_online_user(jid(), state(), binary()) -> state(). remove_online_user(JID, StateData, Reason) -> LJID = jid:tolower(JID), {ok, #user{nick = Nick}} = (?DICT):find(LJID, StateData#state.users), add_to_log(leave, {Nick, Reason}, StateData), tab_remove_online_user(JID, StateData), Users = (?DICT):erase(LJID, StateData#state.users), Nicks = case (?DICT):find(Nick, StateData#state.nicks) of {ok, [LJID]} -> (?DICT):erase(Nick, StateData#state.nicks); {ok, U} -> (?DICT):store(Nick, U -- [LJID], StateData#state.nicks); error -> StateData#state.nicks end, StateData#state{users = Users, nicks = Nicks}. -spec filter_presence(presence()) -> presence(). filter_presence(Presence) -> Els = lists:filter( fun(El) -> XMLNS = xmpp:get_ns(El), case catch binary:part(XMLNS, 0, size(?NS_MUC)) of ?NS_MUC -> false; _ -> true end end, xmpp:get_els(Presence)), xmpp:set_els(Presence, Els). -spec strip_status(presence()) -> presence(). strip_status(Presence) -> Presence#presence{status = []}. -spec add_user_presence(jid(), presence(), state()) -> state(). add_user_presence(JID, Presence, StateData) -> LJID = jid:tolower(JID), FPresence = filter_presence(Presence), Users = (?DICT):update(LJID, fun (#user{} = User) -> User#user{last_presence = FPresence} end, StateData#state.users), StateData#state{users = Users}. -spec add_user_presence_un(jid(), presence(), state()) -> state(). add_user_presence_un(JID, Presence, StateData) -> LJID = jid:tolower(JID), FPresence = filter_presence(Presence), Users = (?DICT):update(LJID, fun (#user{} = User) -> User#user{last_presence = FPresence, role = none} end, StateData#state.users), StateData#state{users = Users}. %% Find and return a list of the full JIDs of the users of Nick. %% Return jid record. -spec find_jids_by_nick(binary(), state()) -> [jid()]. find_jids_by_nick(Nick, StateData) -> Nicks = ?DICT:merge(fun(_, Val, _) -> Val end, StateData#state.nicks, StateData#state.subscriber_nicks), case (?DICT):find(Nick, Nicks) of {ok, [User]} -> [jid:make(User)]; {ok, Users} -> [jid:make(LJID) || LJID <- Users]; error -> [] end. %% Find and return the full JID of the user of Nick with %% highest-priority presence. Return jid record. -spec find_jid_by_nick(binary(), state()) -> jid() | false. find_jid_by_nick(Nick, StateData) -> case (?DICT):find(Nick, StateData#state.nicks) of {ok, [User]} -> jid:make(User); {ok, [FirstUser | Users]} -> #user{last_presence = FirstPresence} = (?DICT):fetch(FirstUser, StateData#state.users), {LJID, _} = lists:foldl(fun (Compare, {HighestUser, HighestPresence}) -> #user{last_presence = P1} = (?DICT):fetch(Compare, StateData#state.users), case higher_presence(P1, HighestPresence) of true -> {Compare, P1}; false -> {HighestUser, HighestPresence} end end, {FirstUser, FirstPresence}, Users), jid:make(LJID); error -> false end. -spec higher_presence(undefined | presence(), undefined | presence()) -> boolean(). higher_presence(Pres1, Pres2) when Pres1 /= undefined, Pres2 /= undefined -> Pri1 = get_priority_from_presence(Pres1), Pri2 = get_priority_from_presence(Pres2), Pri1 > Pri2; higher_presence(Pres1, Pres2) -> Pres1 > Pres2. -spec get_priority_from_presence(presence()) -> integer(). get_priority_from_presence(#presence{priority = Prio}) -> case Prio of undefined -> 0; _ -> Prio end. -spec find_nick_by_jid(jid(), state()) -> binary(). find_nick_by_jid(JID, StateData) -> LJID = jid:tolower(JID), {ok, #user{nick = Nick}} = (?DICT):find(LJID, StateData#state.users), Nick. -spec is_nick_change(jid(), binary(), state()) -> boolean(). is_nick_change(JID, Nick, StateData) -> LJID = jid:tolower(JID), case Nick of <<"">> -> false; _ -> {ok, #user{nick = OldNick}} = (?DICT):find(LJID, StateData#state.users), Nick /= OldNick end. -spec nick_collision(jid(), binary(), state()) -> boolean(). nick_collision(User, Nick, StateData) -> UserOfNick = case find_jid_by_nick(Nick, StateData) of false -> case ?DICT:find(Nick, StateData#state.subscriber_nicks) of {ok, [J]} -> J; error -> false end; J -> J end, (UserOfNick /= false andalso jid:remove_resource(jid:tolower(UserOfNick)) /= jid:remove_resource(jid:tolower(User))). -spec add_new_user(jid(), binary(), presence() | iq(), state()) -> state() | {error, stanza_error()} | {ignore, state()} | {result, xmpp_element(), state()}. add_new_user(From, Nick, Packet, StateData) -> Lang = xmpp:get_lang(Packet), UserRoomJID = jid:replace_resource(StateData#state.jid, Nick), MaxUsers = get_max_users(StateData), MaxAdminUsers = MaxUsers + get_max_users_admin_threshold(StateData), NUsers = dict:fold(fun (_, _, Acc) -> Acc + 1 end, 0, StateData#state.users), Affiliation = get_affiliation(From, StateData), ServiceAffiliation = get_service_affiliation(From, StateData), NConferences = tab_count_user(From), MaxConferences = gen_mod:get_module_opt(StateData#state.server_host, mod_muc, max_user_conferences, fun(I) when is_integer(I), I>0 -> I end, 10), Collision = nick_collision(From, Nick, StateData), IsSubscribeRequest = not is_record(Packet, presence), case {(ServiceAffiliation == owner orelse ((Affiliation == admin orelse Affiliation == owner) andalso NUsers < MaxAdminUsers) orelse NUsers < MaxUsers) andalso NConferences < MaxConferences, Collision, mod_muc:can_use_nick(StateData#state.server_host, StateData#state.host, From, Nick), get_default_role(Affiliation, StateData)} of {false, _, _, _} when NUsers >= MaxUsers orelse NUsers >= MaxAdminUsers -> Txt = <<"Too many users in this conference">>, Err = xmpp:err_resource_constraint(Txt, Lang), if not IsSubscribeRequest -> ejabberd_router:route_error(UserRoomJID, From, Packet, Err), StateData; true -> {error, Err} end; {false, _, _, _} when NConferences >= MaxConferences -> Txt = <<"You have joined too many conferences">>, Err = xmpp:err_resource_constraint(Txt, Lang), if not IsSubscribeRequest -> ejabberd_router:route_error(UserRoomJID, From, Packet, Err), StateData; true -> {error, Err} end; {false, _, _, _} -> Err = xmpp:err_service_unavailable(), if not IsSubscribeRequest -> ejabberd_router:route_error(UserRoomJID, From, Packet, Err), StateData; true -> {error, Err} end; {_, _, _, none} -> Err = case Affiliation of outcast -> ErrText = <<"You have been banned from this room">>, xmpp:err_forbidden(ErrText, Lang); _ -> ErrText = <<"Membership is required to enter this room">>, xmpp:err_registration_required(ErrText, Lang) end, if not IsSubscribeRequest -> ejabberd_router:route_error(UserRoomJID, From, Packet, Err), StateData; true -> {error, Err} end; {_, true, _, _} -> ErrText = <<"That nickname is already in use by another occupant">>, Err = xmpp:err_conflict(ErrText, Lang), if not IsSubscribeRequest -> ejabberd_router:route_error(UserRoomJID, From, Packet, Err), StateData; true -> {error, Err} end; {_, _, false, _} -> ErrText = <<"That nickname is registered by another person">>, Err = xmpp:err_conflict(ErrText, Lang), if not IsSubscribeRequest -> ejabberd_router:route_error(UserRoomJID, From, Packet, Err), StateData; true -> {error, Err} end; {_, _, _, Role} -> case check_password(ServiceAffiliation, Affiliation, Packet, From, StateData) of true -> Nodes = get_subscription_nodes(Packet), NewStateData = if not IsSubscribeRequest -> NewState = add_user_presence( From, Packet, add_online_user(From, Nick, Role, StateData)), send_existing_presences(From, NewState), send_initial_presence(From, NewState, StateData), History = get_history(Nick, Packet, NewState), send_history(From, History, NewState), send_subject(From, StateData), NewState; true -> set_subscriber(From, Nick, Nodes, StateData) end, ResultState = case NewStateData#state.just_created of true -> NewStateData#state{just_created = false}; false -> Robots = (?DICT):erase(From, StateData#state.robots), NewStateData#state{robots = Robots} end, if not IsSubscribeRequest -> ResultState; true -> {result, subscribe_result(Packet), ResultState} end; nopass -> ErrText = <<"A password is required to enter this room">>, Err = xmpp:err_not_authorized(ErrText, Lang), if not IsSubscribeRequest -> ejabberd_router:route_error(UserRoomJID, From, Packet, Err), StateData; true -> {error, Err} end; captcha_required -> SID = xmpp:get_id(Packet), RoomJID = StateData#state.jid, To = jid:replace_resource(RoomJID, Nick), Limiter = {From#jid.luser, From#jid.lserver}, case ejabberd_captcha:create_captcha(SID, RoomJID, To, Lang, Limiter, From) of {ok, ID, Body, CaptchaEls} -> MsgPkt = #message{id = ID, body = Body, sub_els = CaptchaEls}, Robots = (?DICT):store(From, {Nick, Packet}, StateData#state.robots), ejabberd_router:route(RoomJID, From, MsgPkt), NewState = StateData#state{robots = Robots}, if not IsSubscribeRequest -> NewState; true -> {ignore, NewState} end; {error, limit} -> ErrText = <<"Too many CAPTCHA requests">>, Err = xmpp:err_resource_constraint(ErrText, Lang), if not IsSubscribeRequest -> ejabberd_router:route_error( UserRoomJID, From, Packet, Err), StateData; true -> {error, Err} end; _ -> ErrText = <<"Unable to generate a CAPTCHA">>, Err = xmpp:err_internal_server_error(ErrText, Lang), if not IsSubscribeRequest -> ejabberd_router:route_error( UserRoomJID, From, Packet, Err), StateData; true -> {error, Err} end end; _ -> ErrText = <<"Incorrect password">>, Err = xmpp:err_not_authorized(ErrText, Lang), if not IsSubscribeRequest -> ejabberd_router:route_error( UserRoomJID, From, Packet, Err), StateData; true -> {error, Err} end end end. -spec check_password(affiliation(), affiliation(), stanza(), jid(), state()) -> boolean() | nopass. check_password(owner, _Affiliation, _Packet, _From, _StateData) -> %% Don't check pass if user is owner in MUC service (access_admin option) true; check_password(_ServiceAffiliation, Affiliation, Packet, From, StateData) -> case (StateData#state.config)#config.password_protected of false -> check_captcha(Affiliation, From, StateData); true -> Pass = extract_password(Packet), case Pass of false -> nopass; _ -> case (StateData#state.config)#config.password of Pass -> true; _ -> false end end end. -spec check_captcha(affiliation(), jid(), state()) -> true | captcha_required. check_captcha(Affiliation, From, StateData) -> case (StateData#state.config)#config.captcha_protected andalso ejabberd_captcha:is_feature_available() of true when Affiliation == none -> case (?DICT):find(From, StateData#state.robots) of {ok, passed} -> true; _ -> WList = (StateData#state.config)#config.captcha_whitelist, #jid{luser = U, lserver = S, lresource = R} = From, case (?SETS):is_element({U, S, R}, WList) of true -> true; false -> case (?SETS):is_element({U, S, <<"">>}, WList) of true -> true; false -> case (?SETS):is_element({<<"">>, S, <<"">>}, WList) of true -> true; false -> captcha_required end end end end; _ -> true end. -spec extract_password(stanza()) -> binary() | false. extract_password(Packet) -> case xmpp:get_subtag(Packet, #muc{}) of #muc{password = Password} when is_binary(Password) -> Password; _ -> false end. -spec get_history(binary(), stanza(), state()) -> lqueue(). get_history(Nick, Packet, #state{history = History}) -> case xmpp:get_subtag(Packet, #muc{}) of #muc{history = #muc_history{} = MUCHistory} -> Now = p1_time_compat:timestamp(), Q = History#lqueue.queue, {NewQ, Len} = filter_history(Q, MUCHistory, Now, Nick, queue:new(), 0, 0), History#lqueue{queue = NewQ, len = Len}; _ -> History end. -spec filter_history(?TQUEUE, muc_history(), erlang:timestamp(), binary(), ?TQUEUE, non_neg_integer(), non_neg_integer()) -> {?TQUEUE, non_neg_integer()}. filter_history(Queue, #muc_history{since = Since, seconds = Seconds, maxstanzas = MaxStanzas, maxchars = MaxChars} = MUC, Now, Nick, AccQueue, NumStanzas, NumChars) -> case queue:out_r(Queue) of {{value, {_, _, _, TimeStamp, Size} = Elem}, NewQueue} -> NowDiff = timer:now_diff(Now, TimeStamp) div 1000000, Chars = Size + byte_size(Nick) + 1, if (NumStanzas < MaxStanzas) andalso (TimeStamp > Since) andalso (NowDiff =< Seconds) andalso (NumChars + Chars =< MaxChars) -> filter_history(NewQueue, MUC, Now, Nick, queue:in_r(Elem, AccQueue), NumStanzas + 1, NumChars + Chars); true -> {AccQueue, NumStanzas} end; {empty, _} -> {AccQueue, NumStanzas} end. -spec is_room_overcrowded(state()) -> boolean(). is_room_overcrowded(StateData) -> MaxUsersPresence = gen_mod:get_module_opt(StateData#state.server_host, mod_muc, max_users_presence, fun(MUP) when is_integer(MUP) -> MUP end, ?DEFAULT_MAX_USERS_PRESENCE), (?DICT):size(StateData#state.users) > MaxUsersPresence. -spec presence_broadcast_allowed(jid(), state()) -> boolean(). presence_broadcast_allowed(JID, StateData) -> Role = get_role(JID, StateData), lists:member(Role, (StateData#state.config)#config.presence_broadcast). -spec send_initial_presence(jid(), state(), state()) -> ok. send_initial_presence(NJID, StateData, OldStateData) -> send_new_presence1(NJID, <<"">>, true, StateData, OldStateData). -spec send_update_presence(jid(), state(), state()) -> ok. send_update_presence(JID, StateData, OldStateData) -> send_update_presence(JID, <<"">>, StateData, OldStateData). -spec send_update_presence(jid(), binary(), state(), state()) -> ok. send_update_presence(JID, Reason, StateData, OldStateData) -> case is_room_overcrowded(StateData) of true -> ok; false -> send_update_presence1(JID, Reason, StateData, OldStateData) end. -spec send_update_presence1(jid(), binary(), state(), state()) -> ok. send_update_presence1(JID, Reason, StateData, OldStateData) -> LJID = jid:tolower(JID), LJIDs = case LJID of {U, S, <<"">>} -> (?DICT):fold(fun (J, _, Js) -> case J of {U, S, _} -> [J | Js]; _ -> Js end end, [], StateData#state.users); _ -> case (?DICT):is_key(LJID, StateData#state.users) of true -> [LJID]; _ -> [] end end, lists:foreach(fun (J) -> send_new_presence1(J, Reason, false, StateData, OldStateData) end, LJIDs). -spec send_new_presence(jid(), state(), state()) -> ok. send_new_presence(NJID, StateData, OldStateData) -> send_new_presence(NJID, <<"">>, false, StateData, OldStateData). -spec send_new_presence(jid(), binary(), state(), state()) -> ok. send_new_presence(NJID, Reason, StateData, OldStateData) -> send_new_presence(NJID, Reason, false, StateData, OldStateData). -spec send_new_presence(jid(), binary(), boolean(), state(), state()) -> ok. send_new_presence(NJID, Reason, IsInitialPresence, StateData, OldStateData) -> case is_room_overcrowded(StateData) of true -> ok; false -> send_new_presence1(NJID, Reason, IsInitialPresence, StateData, OldStateData) end. -spec is_ra_changed(jid() | ljid(), boolean(), state(), state()) -> boolean(). is_ra_changed(_, _IsInitialPresence = true, _, _) -> false; is_ra_changed(LJID, _IsInitialPresence = false, NewStateData, OldStateData) -> JID = case LJID of #jid{} -> LJID; _ -> jid:make(LJID) end, NewRole = get_role(LJID, NewStateData), NewAff = get_affiliation(JID, NewStateData), OldRole = get_role(LJID, OldStateData), OldAff = get_affiliation(JID, OldStateData), if (NewRole == none) and (NewAff == OldAff) -> %% A user is leaving the room; false; true -> (NewRole /= OldRole) or (NewAff /= OldAff) end. -spec send_new_presence1(jid(), binary(), boolean(), state(), state()) -> ok. send_new_presence1(NJID, Reason, IsInitialPresence, StateData, OldStateData) -> LNJID = jid:tolower(NJID), #user{nick = Nick} = (?DICT):fetch(LNJID, StateData#state.users), LJID = find_jid_by_nick(Nick, StateData), {ok, #user{jid = RealJID, role = Role0, last_presence = Presence0} = UserInfo} = (?DICT):find(jid:tolower(LJID), StateData#state.users), {Role1, Presence1} = case presence_broadcast_allowed(NJID, StateData) of true -> {Role0, Presence0}; false -> {none, #presence{type = unavailable}} end, Affiliation = get_affiliation(LJID, StateData), UserList = case not (presence_broadcast_allowed(NJID, StateData) orelse presence_broadcast_allowed(NJID, OldStateData)) of true -> [{LNJID, UserInfo}]; false -> (?DICT):to_list(get_users_and_subscribers(StateData)) end, lists:foreach( fun({LUJID, Info}) -> IsSelfPresence = LNJID == LUJID, {Role, Presence} = if IsSelfPresence -> {Role0, Presence0}; true -> {Role1, Presence1} end, Item0 = #muc_item{affiliation = Affiliation, role = Role}, Item1 = case Info#user.role == moderator orelse (StateData#state.config)#config.anonymous == false orelse IsSelfPresence of true -> Item0#muc_item{jid = RealJID}; false -> Item0 end, Item = Item1#muc_item{reason = Reason}, StatusCodes = status_codes(IsInitialPresence, IsSelfPresence, StateData), Pres = if Presence == undefined -> #presence{}; true -> Presence end, Packet = xmpp:set_subtag( Pres, #muc_user{items = [Item], status_codes = StatusCodes}), Node1 = case is_ra_changed(NJID, IsInitialPresence, StateData, OldStateData) of true -> ?NS_MUCSUB_NODES_AFFILIATIONS; false -> ?NS_MUCSUB_NODES_PRESENCE end, send_wrapped(jid:replace_resource(StateData#state.jid, Nick), Info#user.jid, Packet, Node1, StateData), Type = xmpp:get_type(Packet), IsSubscriber = is_subscriber(Info#user.jid, StateData), IsOccupant = Info#user.last_presence /= undefined, if (IsSubscriber and not IsOccupant) and (IsInitialPresence or (Type == unavailable)) -> Node2 = ?NS_MUCSUB_NODES_PARTICIPANTS, send_wrapped(jid:replace_resource(StateData#state.jid, Nick), Info#user.jid, Packet, Node2, StateData); true -> ok end end, UserList). -spec send_existing_presences(jid(), state()) -> ok. send_existing_presences(ToJID, StateData) -> case is_room_overcrowded(StateData) of true -> ok; false -> send_existing_presences1(ToJID, StateData) end. -spec send_existing_presences1(jid(), state()) -> ok. send_existing_presences1(ToJID, StateData) -> LToJID = jid:tolower(ToJID), {ok, #user{jid = RealToJID, role = Role}} = (?DICT):find(LToJID, StateData#state.users), lists:foreach( fun({FromNick, _Users}) -> LJID = find_jid_by_nick(FromNick, StateData), #user{jid = FromJID, role = FromRole, last_presence = Presence} = (?DICT):fetch(jid:tolower(LJID), StateData#state.users), PresenceBroadcast = lists:member( FromRole, (StateData#state.config)#config.presence_broadcast), case {RealToJID, PresenceBroadcast} of {FromJID, _} -> ok; {_, false} -> ok; _ -> FromAffiliation = get_affiliation(LJID, StateData), Item0 = #muc_item{affiliation = FromAffiliation, role = FromRole}, Item = case Role == moderator orelse (StateData#state.config)#config.anonymous == false of true -> Item0#muc_item{jid = FromJID}; false -> Item0 end, Packet = xmpp:set_subtag( Presence, #muc_user{items = [Item]}), send_wrapped(jid:replace_resource(StateData#state.jid, FromNick), RealToJID, Packet, ?NS_MUCSUB_NODES_PRESENCE, StateData) end end, (?DICT):to_list(StateData#state.nicks)). -spec set_nick(jid(), binary(), state()) -> state(). set_nick(JID, Nick, State) -> LJID = jid:tolower(JID), {ok, #user{nick = OldNick}} = (?DICT):find(LJID, State#state.users), Users = (?DICT):update(LJID, fun (#user{} = User) -> User#user{nick = Nick} end, State#state.users), OldNickUsers = (?DICT):fetch(OldNick, State#state.nicks), NewNickUsers = case (?DICT):find(Nick, State#state.nicks) of {ok, U} -> U; error -> [] end, Nicks = case OldNickUsers of [LJID] -> (?DICT):store(Nick, [LJID | NewNickUsers -- [LJID]], (?DICT):erase(OldNick, State#state.nicks)); [_ | _] -> (?DICT):store(Nick, [LJID | NewNickUsers -- [LJID]], (?DICT):store(OldNick, OldNickUsers -- [LJID], State#state.nicks)) end, State#state{users = Users, nicks = Nicks}. -spec change_nick(jid(), binary(), state()) -> state(). change_nick(JID, Nick, StateData) -> LJID = jid:tolower(JID), {ok, #user{nick = OldNick}} = (?DICT):find(LJID, StateData#state.users), OldNickUsers = (?DICT):fetch(OldNick, StateData#state.nicks), NewNickUsers = case (?DICT):find(Nick, StateData#state.nicks) of {ok, U} -> U; error -> [] end, SendOldUnavailable = length(OldNickUsers) == 1, SendNewAvailable = SendOldUnavailable orelse NewNickUsers == [], NewStateData = set_nick(JID, Nick, StateData), case presence_broadcast_allowed(JID, NewStateData) of true -> send_nick_changing(JID, OldNick, NewStateData, SendOldUnavailable, SendNewAvailable); false -> ok end, add_to_log(nickchange, {OldNick, Nick}, StateData), NewStateData. -spec send_nick_changing(jid(), binary(), state(), boolean(), boolean()) -> ok. send_nick_changing(JID, OldNick, StateData, SendOldUnavailable, SendNewAvailable) -> {ok, #user{jid = RealJID, nick = Nick, role = Role, last_presence = Presence}} = (?DICT):find(jid:tolower(JID), StateData#state.users), Affiliation = get_affiliation(JID, StateData), lists:foreach( fun({LJID, Info}) when Presence /= undefined -> IsSelfPresence = LJID == jid:tolower(JID), Item0 = #muc_item{affiliation = Affiliation, role = Role}, Item = case Info#user.role == moderator orelse (StateData#state.config)#config.anonymous == false orelse IsSelfPresence of true -> Item0#muc_item{jid = RealJID}; false -> Item0 end, Status110 = case IsSelfPresence of true -> [110]; false -> [] end, Packet1 = #presence{ type = unavailable, sub_els = [#muc_user{ items = [Item#muc_item{nick = Nick}], status_codes = [303|Status110]}]}, Packet2 = xmpp:set_subtag(Presence, #muc_user{items = [Item], status_codes = Status110}), if SendOldUnavailable -> send_wrapped( jid:replace_resource(StateData#state.jid, OldNick), Info#user.jid, Packet1, ?NS_MUCSUB_NODES_PRESENCE, StateData); true -> ok end, if SendNewAvailable -> send_wrapped( jid:replace_resource(StateData#state.jid, Nick), Info#user.jid, Packet2, ?NS_MUCSUB_NODES_PRESENCE, StateData); true -> ok end; (_) -> ok end, ?DICT:to_list(get_users_and_subscribers(StateData))). -spec maybe_send_affiliation(jid(), affiliation(), state()) -> ok. maybe_send_affiliation(JID, Affiliation, StateData) -> LJID = jid:tolower(JID), Users = get_users_and_subscribers(StateData), IsOccupant = case LJID of {LUser, LServer, <<"">>} -> not (?DICT):is_empty( (?DICT):filter(fun({U, S, _}, _) -> U == LUser andalso S == LServer end, Users)); {_LUser, _LServer, _LResource} -> (?DICT):is_key(LJID, Users) end, case IsOccupant of true -> ok; % The new affiliation is published via presence. false -> send_affiliation(JID, Affiliation, StateData) end. -spec send_affiliation(jid(), affiliation(), state()) -> ok. send_affiliation(JID, Affiliation, StateData) -> Item = #muc_item{jid = JID, affiliation = Affiliation, role = none}, Message = #message{id = randoms:get_string(), sub_els = [#muc_user{items = [Item]}]}, Users = get_users_and_subscribers(StateData), Recipients = case (StateData#state.config)#config.anonymous of true -> (?DICT):filter(fun(_, #user{role = moderator}) -> true; (_, _) -> false end, Users); false -> Users end, send_wrapped_multiple(StateData#state.jid, Recipients, Message, ?NS_MUCSUB_NODES_AFFILIATIONS, StateData). -spec status_codes(boolean(), boolean(), state()) -> [pos_integer()]. status_codes(IsInitialPresence, _IsSelfPresence = true, StateData) -> S0 = [110], case IsInitialPresence of true -> S1 = case StateData#state.just_created of true -> [201|S0]; false -> S0 end, S2 = case (StateData#state.config)#config.anonymous of true -> S1; false -> [100|S1] end, S3 = case (StateData#state.config)#config.logging of true -> [170|S2]; false -> S2 end, S3; false -> S0 end; status_codes(_IsInitialPresence, _IsSelfPresence = false, _StateData) -> []. -spec lqueue_new(non_neg_integer()) -> lqueue(). lqueue_new(Max) -> #lqueue{queue = queue:new(), len = 0, max = Max}. -spec lqueue_in(term(), lqueue()) -> lqueue(). %% If the message queue limit is set to 0, do not store messages. lqueue_in(_Item, LQ = #lqueue{max = 0}) -> LQ; %% Otherwise, rotate messages in the queue store. lqueue_in(Item, #lqueue{queue = Q1, len = Len, max = Max}) -> Q2 = queue:in(Item, Q1), if Len >= Max -> Q3 = lqueue_cut(Q2, Len - Max + 1), #lqueue{queue = Q3, len = Max, max = Max}; true -> #lqueue{queue = Q2, len = Len + 1, max = Max} end. -spec lqueue_cut(queue:queue(), non_neg_integer()) -> queue:queue(). lqueue_cut(Q, 0) -> Q; lqueue_cut(Q, N) -> {_, Q1} = queue:out(Q), lqueue_cut(Q1, N - 1). -spec lqueue_to_list(lqueue()) -> list(). lqueue_to_list(#lqueue{queue = Q1}) -> queue:to_list(Q1). -spec add_message_to_history(binary(), jid(), message(), state()) -> state(). add_message_to_history(FromNick, FromJID, Packet, StateData) -> add_to_log(text, {FromNick, Packet}, StateData), case check_subject(Packet) of false -> TimeStamp = p1_time_compat:timestamp(), AddrPacket = case (StateData#state.config)#config.anonymous of true -> Packet; false -> Addresses = #addresses{ list = [#address{type = ofrom, jid = FromJID}]}, xmpp:set_subtag(Packet, Addresses) end, TSPacket = xmpp_util:add_delay_info( AddrPacket, StateData#state.jid, TimeStamp), SPacket = xmpp:set_from_to( TSPacket, jid:replace_resource(StateData#state.jid, FromNick), StateData#state.jid), Size = element_size(SPacket), Q1 = lqueue_in({FromNick, TSPacket, false, TimeStamp, Size}, StateData#state.history), StateData#state{history = Q1}; _ -> StateData end. -spec send_history(jid(), lqueue(), state()) -> boolean(). send_history(JID, History, StateData) -> lists:foreach( fun({Nick, Packet, _HaveSubject, _TimeStamp, _Size}) -> ejabberd_router:route( jid:replace_resource(StateData#state.jid, Nick), JID, Packet) end, lqueue_to_list(History)). -spec send_subject(jid(), state()) -> ok. send_subject(JID, #state{subject_author = Nick} = StateData) -> Subject = case StateData#state.subject of <<"">> -> [#text{}]; Subj -> xmpp:mk_text(Subj) end, Packet = #message{type = groupchat, subject = Subject}, ejabberd_router:route(jid:replace_resource(StateData#state.jid, Nick), JID, Packet). -spec check_subject(message()) -> false | binary(). check_subject(#message{subject = [_|_] = Subj, body = [], thread = undefined}) -> xmpp:get_text(Subj); check_subject(_) -> false. -spec can_change_subject(role(), boolean(), state()) -> boolean(). can_change_subject(Role, IsSubscriber, StateData) -> case (StateData#state.config)#config.allow_change_subj of true -> Role == moderator orelse Role == participant orelse IsSubscriber == true; _ -> Role == moderator end. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % Admin stuff -spec process_iq_admin(jid(), iq(), #state{}) -> {error, stanza_error()} | {result, undefined, #state{}} | {result, muc_admin()}. process_iq_admin(_From, #iq{lang = Lang, sub_els = [#muc_admin{items = []}]}, _StateData) -> Txt = <<"No 'item' element found">>, {error, xmpp:err_bad_request(Txt, Lang)}; process_iq_admin(From, #iq{type = set, lang = Lang, sub_els = [#muc_admin{items = Items}]}, StateData) -> process_admin_items_set(From, Items, Lang, StateData); process_iq_admin(From, #iq{type = get, lang = Lang, sub_els = [#muc_admin{items = [Item]}]}, StateData) -> FAffiliation = get_affiliation(From, StateData), FRole = get_role(From, StateData), case Item of #muc_item{role = undefined, affiliation = undefined} -> Txt = <<"Neither 'role' nor 'affiliation' attribute found">>, {error, xmpp:err_bad_request(Txt, Lang)}; #muc_item{role = undefined, affiliation = Affiliation} -> if (FAffiliation == owner) or (FAffiliation == admin) or ((FAffiliation == member) and not (StateData#state.config)#config.anonymous) -> Items = items_with_affiliation(Affiliation, StateData), {result, #muc_admin{items = Items}}; true -> ErrText = <<"Administrator privileges required">>, {error, xmpp:err_forbidden(ErrText, Lang)} end; #muc_item{role = Role} -> if FRole == moderator -> Items = items_with_role(Role, StateData), {result, #muc_admin{items = Items}}; true -> ErrText = <<"Moderator privileges required">>, {error, xmpp:err_forbidden(ErrText, Lang)} end end; process_iq_admin(_From, #iq{type = get, lang = Lang}, _StateData) -> ErrText = <<"Too many elements">>, {error, xmpp:err_bad_request(ErrText, Lang)}. -spec items_with_role(role(), state()) -> [muc_item()]. items_with_role(SRole, StateData) -> lists:map(fun ({_, U}) -> user_to_item(U, StateData) end, search_role(SRole, StateData)). -spec items_with_affiliation(affiliation(), state()) -> [muc_item()]. items_with_affiliation(SAffiliation, StateData) -> lists:map( fun({JID, {Affiliation, Reason}}) -> #muc_item{affiliation = Affiliation, jid = jid:make(JID), reason = Reason}; ({JID, Affiliation}) -> #muc_item{affiliation = Affiliation, jid = jid:make(JID)} end, search_affiliation(SAffiliation, StateData)). -spec user_to_item(#user{}, state()) -> muc_item(). user_to_item(#user{role = Role, nick = Nick, jid = JID}, StateData) -> Affiliation = get_affiliation(JID, StateData), #muc_item{role = Role, affiliation = Affiliation, nick = Nick, jid = JID}. -spec search_role(role(), state()) -> [{ljid(), #user{}}]. search_role(Role, StateData) -> lists:filter(fun ({_, #user{role = R}}) -> Role == R end, (?DICT):to_list(StateData#state.users)). -spec search_affiliation(affiliation(), state()) -> [{ljid(), affiliation() | {affiliation(), binary()}}]. search_affiliation(Affiliation, StateData) -> lists:filter(fun ({_, A}) -> case A of {A1, _Reason} -> Affiliation == A1; _ -> Affiliation == A end end, (?DICT):to_list(StateData#state.affiliations)). -spec process_admin_items_set(jid(), [muc_item()], binary(), #state{}) -> {result, undefined, #state{}} | {error, stanza_error()}. process_admin_items_set(UJID, Items, Lang, StateData) -> UAffiliation = get_affiliation(UJID, StateData), URole = get_role(UJID, StateData), case catch find_changed_items(UJID, UAffiliation, URole, Items, Lang, StateData, []) of {result, Res} -> ?INFO_MSG("Processing MUC admin query from ~s in " "room ~s:~n ~p", [jid:to_string(UJID), jid:to_string(StateData#state.jid), Res]), case lists:foldl(process_item_change(UJID), StateData, lists:flatten(Res)) of {error, _} = Err -> Err; NSD -> store_room(NSD), {result, undefined, NSD} end; {error, Err} -> {error, Err} end. -spec process_item_change(jid()) -> function(). process_item_change(UJID) -> fun(_, {error, _} = Err) -> Err; (Item, SD) -> process_item_change(Item, SD, UJID) end. -type admin_action() :: {jid(), affiliation | role, affiliation() | role(), binary()}. -spec process_item_change(admin_action(), state(), jid()) -> state() | {error, stanza_error()}. process_item_change(Item, SD, UJID) -> try case Item of {JID, affiliation, owner, _} when JID#jid.luser == <<"">> -> %% If the provided JID does not have username, %% forget the affiliation completely SD; {JID, role, none, Reason} -> send_kickban_presence(UJID, JID, Reason, 307, SD), set_role(JID, none, SD); {JID, affiliation, none, Reason} -> case (SD#state.config)#config.members_only of true -> send_kickban_presence(UJID, JID, Reason, 321, none, SD), maybe_send_affiliation(JID, none, SD), SD1 = set_affiliation(JID, none, SD), set_role(JID, none, SD1); _ -> SD1 = set_affiliation(JID, none, SD), send_update_presence(JID, Reason, SD1, SD), maybe_send_affiliation(JID, none, SD1), SD1 end; {JID, affiliation, outcast, Reason} -> send_kickban_presence(UJID, JID, Reason, 301, outcast, SD), maybe_send_affiliation(JID, outcast, SD), set_affiliation(JID, outcast, set_role(JID, none, SD), Reason); {JID, affiliation, A, Reason} when (A == admin) or (A == owner) -> SD1 = set_affiliation(JID, A, SD, Reason), SD2 = set_role(JID, moderator, SD1), send_update_presence(JID, Reason, SD2, SD), maybe_send_affiliation(JID, A, SD2), SD2; {JID, affiliation, member, Reason} -> SD1 = set_affiliation(JID, member, SD, Reason), SD2 = set_role(JID, participant, SD1), send_update_presence(JID, Reason, SD2, SD), maybe_send_affiliation(JID, member, SD2), SD2; {JID, role, Role, Reason} -> SD1 = set_role(JID, Role, SD), send_new_presence(JID, Reason, SD1, SD), SD1; {JID, affiliation, A, _Reason} -> SD1 = set_affiliation(JID, A, SD), send_update_presence(JID, SD1, SD), maybe_send_affiliation(JID, A, SD1), SD1 end catch E:R -> ?ERROR_MSG("failed to set item ~p from ~s: ~p", [Item, jid:to_string(UJID), {E, {R, erlang:get_stacktrace()}}]), {error, xmpp:err_internal_server_error()} end. -spec find_changed_items(jid(), affiliation(), role(), [muc_item()], binary(), state(), [admin_action()]) -> {result, [admin_action()]}. find_changed_items(_UJID, _UAffiliation, _URole, [], _Lang, _StateData, Res) -> {result, Res}; find_changed_items(_UJID, _UAffiliation, _URole, [#muc_item{jid = undefined, nick = undefined}|_], Lang, _StateData, _Res) -> Txt = <<"Neither 'jid' nor 'nick' attribute found">>, throw({error, xmpp:err_bad_request(Txt, Lang)}); find_changed_items(_UJID, _UAffiliation, _URole, [#muc_item{role = undefined, affiliation = undefined}|_], Lang, _StateData, _Res) -> Txt = <<"Neither 'role' nor 'affiliation' attribute found">>, throw({error, xmpp:err_bad_request(Txt, Lang)}); find_changed_items(UJID, UAffiliation, URole, [#muc_item{jid = J, nick = Nick, reason = Reason, role = Role, affiliation = Affiliation}|Items], Lang, StateData, Res) -> [JID | _] = JIDs = if J /= undefined -> [J]; Nick /= <<"">> -> case find_jids_by_nick(Nick, StateData) of [] -> ErrText = str:format(<<"Nickname ~s does not exist in the room">>, [Nick]), throw({error, xmpp:err_not_acceptable(ErrText, Lang)}); JIDList -> JIDList end end, {RoleOrAff, RoleOrAffValue} = if Role == undefined -> {affiliation, Affiliation}; true -> {role, Role} end, TAffiliation = get_affiliation(JID, StateData), TRole = get_role(JID, StateData), ServiceAf = get_service_affiliation(JID, StateData), CanChangeRA = case can_change_ra(UAffiliation, URole, TAffiliation, TRole, RoleOrAff, RoleOrAffValue, ServiceAf) of nothing -> nothing; true -> true; check_owner -> case search_affiliation(owner, StateData) of [{OJID, _}] -> jid:remove_resource(OJID) /= jid:tolower(jid:remove_resource(UJID)); _ -> true end; _ -> false end, case CanChangeRA of nothing -> find_changed_items(UJID, UAffiliation, URole, Items, Lang, StateData, Res); true -> MoreRes = case RoleOrAff of affiliation -> [{jid:remove_resource(Jidx), RoleOrAff, RoleOrAffValue, Reason} || Jidx <- JIDs]; role -> [{Jidx, RoleOrAff, RoleOrAffValue, Reason} || Jidx <- JIDs] end, find_changed_items(UJID, UAffiliation, URole, Items, Lang, StateData, [MoreRes | Res]); false -> Txt = <<"Changing role/affiliation is not allowed">>, throw({error, xmpp:err_not_allowed(Txt, Lang)}) end. -spec can_change_ra(affiliation(), role(), affiliation(), role(), affiliation, affiliation(), affiliation()) -> boolean(); (affiliation(), role(), affiliation(), role(), role, role(), affiliation()) -> boolean(). can_change_ra(_FAffiliation, _FRole, owner, _TRole, affiliation, owner, owner) -> %% A room owner tries to add as persistent owner a %% participant that is already owner because he is MUC admin true; can_change_ra(_FAffiliation, _FRole, _TAffiliation, _TRole, _RoleorAffiliation, _Value, owner) -> %% Nobody can decrease MUC admin's role/affiliation false; can_change_ra(_FAffiliation, _FRole, TAffiliation, _TRole, affiliation, Value, _ServiceAf) when TAffiliation == Value -> nothing; can_change_ra(_FAffiliation, _FRole, _TAffiliation, TRole, role, Value, _ServiceAf) when TRole == Value -> nothing; can_change_ra(FAffiliation, _FRole, outcast, _TRole, affiliation, none, _ServiceAf) when (FAffiliation == owner) or (FAffiliation == admin) -> true; can_change_ra(FAffiliation, _FRole, outcast, _TRole, affiliation, member, _ServiceAf) when (FAffiliation == owner) or (FAffiliation == admin) -> true; can_change_ra(owner, _FRole, outcast, _TRole, affiliation, admin, _ServiceAf) -> true; can_change_ra(owner, _FRole, outcast, _TRole, affiliation, owner, _ServiceAf) -> true; can_change_ra(FAffiliation, _FRole, none, _TRole, affiliation, outcast, _ServiceAf) when (FAffiliation == owner) or (FAffiliation == admin) -> true; can_change_ra(FAffiliation, _FRole, none, _TRole, affiliation, member, _ServiceAf) when (FAffiliation == owner) or (FAffiliation == admin) -> true; can_change_ra(owner, _FRole, none, _TRole, affiliation, admin, _ServiceAf) -> true; can_change_ra(owner, _FRole, none, _TRole, affiliation, owner, _ServiceAf) -> true; can_change_ra(FAffiliation, _FRole, member, _TRole, affiliation, outcast, _ServiceAf) when (FAffiliation == owner) or (FAffiliation == admin) -> true; can_change_ra(FAffiliation, _FRole, member, _TRole, affiliation, none, _ServiceAf) when (FAffiliation == owner) or (FAffiliation == admin) -> true; can_change_ra(owner, _FRole, member, _TRole, affiliation, admin, _ServiceAf) -> true; can_change_ra(owner, _FRole, member, _TRole, affiliation, owner, _ServiceAf) -> true; can_change_ra(owner, _FRole, admin, _TRole, affiliation, _Affiliation, _ServiceAf) -> true; can_change_ra(owner, _FRole, owner, _TRole, affiliation, _Affiliation, _ServiceAf) -> check_owner; can_change_ra(_FAffiliation, _FRole, _TAffiliation, _TRole, affiliation, _Value, _ServiceAf) -> false; can_change_ra(_FAffiliation, moderator, _TAffiliation, visitor, role, none, _ServiceAf) -> true; can_change_ra(_FAffiliation, moderator, _TAffiliation, visitor, role, participant, _ServiceAf) -> true; can_change_ra(FAffiliation, _FRole, _TAffiliation, visitor, role, moderator, _ServiceAf) when (FAffiliation == owner) or (FAffiliation == admin) -> true; can_change_ra(_FAffiliation, moderator, _TAffiliation, participant, role, none, _ServiceAf) -> true; can_change_ra(_FAffiliation, moderator, _TAffiliation, participant, role, visitor, _ServiceAf) -> true; can_change_ra(FAffiliation, _FRole, _TAffiliation, participant, role, moderator, _ServiceAf) when (FAffiliation == owner) or (FAffiliation == admin) -> true; can_change_ra(_FAffiliation, _FRole, owner, moderator, role, visitor, _ServiceAf) -> false; can_change_ra(owner, _FRole, _TAffiliation, moderator, role, visitor, _ServiceAf) -> true; can_change_ra(_FAffiliation, _FRole, admin, moderator, role, visitor, _ServiceAf) -> false; can_change_ra(admin, _FRole, _TAffiliation, moderator, role, visitor, _ServiceAf) -> true; can_change_ra(_FAffiliation, _FRole, owner, moderator, role, participant, _ServiceAf) -> false; can_change_ra(owner, _FRole, _TAffiliation, moderator, role, participant, _ServiceAf) -> true; can_change_ra(_FAffiliation, _FRole, admin, moderator, role, participant, _ServiceAf) -> false; can_change_ra(admin, _FRole, _TAffiliation, moderator, role, participant, _ServiceAf) -> true; can_change_ra(_FAffiliation, _FRole, _TAffiliation, _TRole, role, _Value, _ServiceAf) -> false. -spec send_kickban_presence(jid(), jid(), binary(), pos_integer(), state()) -> ok. send_kickban_presence(UJID, JID, Reason, Code, StateData) -> NewAffiliation = get_affiliation(JID, StateData), send_kickban_presence(UJID, JID, Reason, Code, NewAffiliation, StateData). -spec send_kickban_presence(jid(), jid(), binary(), pos_integer(), affiliation(), state()) -> ok. send_kickban_presence(UJID, JID, Reason, Code, NewAffiliation, StateData) -> LJID = jid:tolower(JID), LJIDs = case LJID of {U, S, <<"">>} -> (?DICT):fold(fun (J, _, Js) -> case J of {U, S, _} -> [J | Js]; _ -> Js end end, [], StateData#state.users); _ -> case (?DICT):is_key(LJID, StateData#state.users) of true -> [LJID]; _ -> [] end end, lists:foreach(fun (J) -> {ok, #user{nick = Nick}} = (?DICT):find(J, StateData#state.users), add_to_log(kickban, {Nick, Reason, Code}, StateData), tab_remove_online_user(J, StateData), send_kickban_presence1(UJID, J, Reason, Code, NewAffiliation, StateData) end, LJIDs). -spec send_kickban_presence1(jid(), jid(), binary(), pos_integer(), affiliation(), state()) -> ok. send_kickban_presence1(MJID, UJID, Reason, Code, Affiliation, StateData) -> {ok, #user{jid = RealJID, nick = Nick}} = (?DICT):find(jid:tolower(UJID), StateData#state.users), ActorNick = get_actor_nick(MJID, StateData), lists:foreach( fun({LJID, Info}) -> IsSelfPresence = jid:tolower(UJID) == LJID, Item0 = #muc_item{affiliation = Affiliation, role = none}, Item1 = case Info#user.role == moderator orelse (StateData#state.config)#config.anonymous == false orelse IsSelfPresence of true -> Item0#muc_item{jid = RealJID}; false -> Item0 end, Item2 = Item1#muc_item{reason = Reason}, Item = case ActorNick of <<"">> -> Item2; _ -> Item2#muc_item{actor = #muc_actor{nick = ActorNick}} end, Codes = if IsSelfPresence -> [110, Code]; true -> [Code] end, Packet = #presence{type = unavailable, sub_els = [#muc_user{items = [Item], status_codes = Codes}]}, RoomJIDNick = jid:replace_resource(StateData#state.jid, Nick), send_wrapped(RoomJIDNick, Info#user.jid, Packet, ?NS_MUCSUB_NODES_AFFILIATIONS, StateData), IsSubscriber = is_subscriber(Info#user.jid, StateData), IsOccupant = Info#user.last_presence /= undefined, if (IsSubscriber and not IsOccupant) -> send_wrapped(RoomJIDNick, Info#user.jid, Packet, ?NS_MUCSUB_NODES_PARTICIPANTS, StateData); true -> ok end end, (?DICT):to_list(get_users_and_subscribers(StateData))). -spec get_actor_nick(binary() | jid(), state()) -> binary(). get_actor_nick(<<"">>, _StateData) -> <<"">>; get_actor_nick(MJID, StateData) -> case (?DICT):find(jid:tolower(MJID), StateData#state.users) of {ok, #user{nick = ActorNick}} -> ActorNick; _ -> <<"">> end. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % Owner stuff -spec process_iq_owner(jid(), iq(), state()) -> {result, undefined | muc_owner()} | {result, undefined | muc_owner(), state() | stop} | {error, stanza_error()}. process_iq_owner(From, #iq{type = set, lang = Lang, sub_els = [#muc_owner{destroy = Destroy, config = Config, items = Items}]}, StateData) -> FAffiliation = get_affiliation(From, StateData), if FAffiliation /= owner -> ErrText = <<"Owner privileges required">>, {error, xmpp:err_forbidden(ErrText, Lang)}; Destroy /= undefined, Config == undefined, Items == [] -> ?INFO_MSG("Destroyed MUC room ~s by the owner ~s", [jid:to_string(StateData#state.jid), jid:to_string(From)]), add_to_log(room_existence, destroyed, StateData), destroy_room(Destroy, StateData); Config /= undefined, Destroy == undefined, Items == [] -> case Config of #xdata{type = cancel} -> {result, undefined}; #xdata{type = submit, fields = Fs} -> try muc_roomconfig:decode(Fs) of Options -> case is_allowed_log_change(Options, StateData, From) andalso is_allowed_persistent_change(Options, StateData, From) andalso is_allowed_room_name_desc_limits(Options, StateData) andalso is_password_settings_correct(Options, StateData) of true -> set_config(Options, StateData, Lang); false -> {error, xmpp:err_not_acceptable()} end catch _:{muc_roomconfig, Why} -> Txt = muc_roomconfig:format_error(Why), {error, xmpp:err_bad_request(Txt, Lang)} end; _ -> Txt = <<"Incorrect data form">>, {error, xmpp:err_bad_request(Txt, Lang)} end; Items /= [], Config == undefined, Destroy == undefined -> process_admin_items_set(From, Items, Lang, StateData); true -> {error, xmpp:err_bad_request()} end; process_iq_owner(From, #iq{type = get, lang = Lang, sub_els = [#muc_owner{destroy = Destroy, config = Config, items = Items}]}, StateData) -> FAffiliation = get_affiliation(From, StateData), if FAffiliation /= owner -> ErrText = <<"Owner privileges required">>, {error, xmpp:err_forbidden(ErrText, Lang)}; Destroy == undefined, Config == undefined -> case Items of [] -> {result, #muc_owner{config = get_config(Lang, StateData, From)}}; [#muc_item{affiliation = undefined}] -> Txt = <<"No 'affiliation' attribute found">>, {error, xmpp:err_bad_request(Txt, Lang)}; [#muc_item{affiliation = Affiliation}] -> Items = items_with_affiliation(Affiliation, StateData), {result, #muc_owner{items = Items}}; [_|_] -> Txt = <<"Too many elements">>, {error, xmpp:err_bad_request(Txt, Lang)} end; true -> {error, xmpp:err_bad_request()} end. -spec is_allowed_log_change(muc_roomconfig:result(), state(), jid()) -> boolean(). is_allowed_log_change(Options, StateData, From) -> case proplists:is_defined(enablelogging, Options) of false -> true; true -> allow == mod_muc_log:check_access_log(StateData#state.server_host, From) end. -spec is_allowed_persistent_change(muc_roomconfig:result(), state(), jid()) -> boolean(). is_allowed_persistent_change(Options, StateData, From) -> case proplists:is_defined(persistentroom, Options) of false -> true; true -> {_AccessRoute, _AccessCreate, _AccessAdmin, AccessPersistent} = StateData#state.access, allow == acl:match_rule(StateData#state.server_host, AccessPersistent, From) end. %% Check if the Room Name and Room Description defined in the Data Form %% are conformant to the configured limits -spec is_allowed_room_name_desc_limits(muc_roomconfig:result(), state()) -> boolean(). is_allowed_room_name_desc_limits(Options, StateData) -> RoomName = proplists:get_value(roomname, Options, <<"">>), RoomDesc = proplists:get_value(roomdesc, Options, <<"">>), MaxRoomName = gen_mod:get_module_opt( StateData#state.server_host, mod_muc, max_room_name, fun(infinity) -> infinity; (I) when is_integer(I), I>0 -> I end, infinity), MaxRoomDesc = gen_mod:get_module_opt( StateData#state.server_host, mod_muc, max_room_desc, fun(infinity) -> infinity; (I) when is_integer(I), I>0 -> I end, infinity), (byte_size(RoomName) =< MaxRoomName) andalso (byte_size(RoomDesc) =< MaxRoomDesc). %% Return false if: %% "the password for a password-protected room is blank" -spec is_password_settings_correct(muc_roomconfig:result(), state()) -> boolean(). is_password_settings_correct(Options, StateData) -> Config = StateData#state.config, OldProtected = Config#config.password_protected, OldPassword = Config#config.password, NewProtected = proplists:get_value(passwordprotectedroom, Options), NewPassword = proplists:get_value(roomsecret, Options), case {OldProtected, NewProtected, OldPassword, NewPassword} of {true, undefined, <<"">>, undefined} -> false; {true, undefined, _, <<"">>} -> false; {_, true, <<"">>, undefined} -> false; {_, true, _, <<"">>} -> false; _ -> true end. -spec get_default_room_maxusers(state()) -> non_neg_integer(). get_default_room_maxusers(RoomState) -> DefRoomOpts = gen_mod:get_module_opt(RoomState#state.server_host, mod_muc, default_room_options, fun(L) when is_list(L) -> L end, []), RoomState2 = set_opts(DefRoomOpts, RoomState), (RoomState2#state.config)#config.max_users. -spec get_config(binary(), state(), jid()) -> xdata(). get_config(Lang, StateData, From) -> {_AccessRoute, _AccessCreate, _AccessAdmin, AccessPersistent} = StateData#state.access, ServiceMaxUsers = get_service_max_users(StateData), DefaultRoomMaxUsers = get_default_room_maxusers(StateData), Config = StateData#state.config, {MaxUsersRoomInteger, MaxUsersRoomString} = case get_max_users(StateData) of N when is_integer(N) -> {N, N}; _ -> {0, none} end, Title = str:format( translate:translate(Lang, <<"Configuration of room ~s">>), [jid:to_string(StateData#state.jid)]), Fs = [{roomname, Config#config.title}, {roomdesc, Config#config.description}] ++ case acl:match_rule(StateData#state.server_host, AccessPersistent, From) of allow -> [{persistentroom, Config#config.persistent}]; deny -> [] end ++ [{publicroom, Config#config.public}, {public_list, Config#config.public_list}, {passwordprotectedroom, Config#config.password_protected}, {roomsecret, case Config#config.password_protected of true -> Config#config.password; false -> <<"">> end}, {maxusers, MaxUsersRoomString, [if is_integer(ServiceMaxUsers) -> []; true -> [{<<"No limit">>, <<"none">>}] end] ++ [{integer_to_binary(N), N} || N <- lists:usort([ServiceMaxUsers, DefaultRoomMaxUsers, MaxUsersRoomInteger | ?MAX_USERS_DEFAULT_LIST]), N =< ServiceMaxUsers]}, {whois, if Config#config.anonymous -> moderators; true -> anyone end}, {presencebroadcast, Config#config.presence_broadcast}, {membersonly, Config#config.members_only}, {moderatedroom, Config#config.moderated}, {members_by_default, Config#config.members_by_default}, {changesubject, Config#config.allow_change_subj}, {allow_private_messages, Config#config.allow_private_messages}, {allow_private_messages_from_visitors, Config#config.allow_private_messages_from_visitors}, {allow_query_users, Config#config.allow_query_users}, {allowinvites, Config#config.allow_user_invites}, {allow_visitor_status, Config#config.allow_visitor_status}, {allow_visitor_nickchange, Config#config.allow_visitor_nickchange}, {allow_voice_requests, Config#config.allow_voice_requests}, {allow_subscription, Config#config.allow_subscription}, {voice_request_min_interval, Config#config.voice_request_min_interval}] ++ case ejabberd_captcha:is_feature_available() of true -> [{captcha_protected, Config#config.captcha_protected}]; false -> [] end ++ [{captcha_whitelist, lists:map(fun jid:make/1, ?SETS:to_list(Config#config.captcha_whitelist))}] ++ case mod_muc_log:check_access_log(StateData#state.server_host, From) of allow -> [{enablelogging, Config#config.logging}]; deny -> [] end, Fields = ejabberd_hooks:run_fold(get_room_config, StateData#state.server_host, Fs, [StateData, From, Lang]), #xdata{type = form, title = Title, fields = muc_roomconfig:encode( Fields, fun(T) -> translate:translate(Lang, T) end)}. -spec set_config(muc_roomconfig:result(), state(), binary()) -> {error, stanza_error()} | {result, undefined, state()}. set_config(Options, StateData, Lang) -> try #config{} = Config = set_config(Options, StateData#state.config, StateData#state.server_host, Lang), {result, _, NSD} = Res = change_config(Config, StateData), Type = case {(StateData#state.config)#config.logging, Config#config.logging} of {true, false} -> roomconfig_change_disabledlogging; {false, true} -> roomconfig_change_enabledlogging; {_, _} -> roomconfig_change end, Users = [{U#user.jid, U#user.nick, U#user.role} || {_, U} <- (?DICT):to_list(StateData#state.users)], add_to_log(Type, Users, NSD), Res catch _:{badmatch, {error, #stanza_error{}} = Err} -> Err end. get_config_opt_name(Pos) -> Fs = [config|record_info(fields, config)], lists:nth(Pos, Fs). -spec set_config([muc_roomconfig:property()], #config{}, binary(), binary()) -> #config{} | {error, stanza_error()}. set_config(Opts, Config, ServerHost, Lang) -> lists:foldl( fun(_, {error, _} = Err) -> Err; ({roomname, Title}, C) -> C#config{title = Title}; ({roomdesc, Desc}, C) -> C#config{description = Desc}; ({changesubject, V}, C) -> C#config{allow_change_subj = V}; ({allow_query_users, V}, C) -> C#config{allow_query_users = V}; ({allow_private_messages, V}, C) -> C#config{allow_private_messages = V}; ({allow_private_messages_from_visitors, V}, C) -> C#config{allow_private_messages_from_visitors = V}; ({allow_visitor_status, V}, C) -> C#config{allow_visitor_status = V}; ({allow_visitor_nickchange, V}, C) -> C#config{allow_visitor_nickchange = V}; ({publicroom, V}, C) -> C#config{public = V}; ({public_list, V}, C) -> C#config{public_list = V}; ({persistentroom, V}, C) -> C#config{persistent = V}; ({moderatedroom, V}, C) -> C#config{moderated = V}; ({members_by_default, V}, C) -> C#config{members_by_default = V}; ({membersonly, V}, C) -> C#config{members_only = V}; ({captcha_protected, V}, C) -> C#config{captcha_protected = V}; ({allowinvites, V}, C) -> C#config{allow_user_invites = V}; ({allow_subscription, V}, C) -> C#config{allow_subscription = V}; ({passwordprotectedroom, V}, C) -> C#config{password_protected = V}; ({roomsecret, V}, C) -> C#config{password = V}; ({anonymous, V}, C) -> C#config{anonymous = V}; ({presencebroadcast, V}, C) -> C#config{presence_broadcast = V}; ({allow_voice_requests, V}, C) -> C#config{allow_voice_requests = V}; ({voice_request_min_interval, V}, C) -> C#config{voice_request_min_interval = V}; ({whois, moderators}, C) -> C#config{anonymous = true}; ({whois, anyone}, C) -> C#config{anonymous = false}; ({maxusers, V}, C) -> C#config{max_users = V}; ({enablelogging, V}, C) -> C#config{logging = V}; ({captcha_whitelist, Js}, C) -> LJIDs = [jid:tolower(J) || J <- Js], C#config{captcha_whitelist = ?SETS:from_list(LJIDs)}; ({O, V} = Opt, C) -> case ejabberd_hooks:run_fold(set_room_option, ServerHost, {0, undefined}, [Opt, Lang]) of {0, undefined} -> ?ERROR_MSG("set_room_option hook failed for " "option '~s' with value ~p", [O, V]), Txt = {<<"Failed to process option '~s'">>, [O]}, {error, xmpp:err_internal_server_error(Txt, Lang)}; {Pos, Val} -> setelement(Pos, C, Val) end end, Config, Opts). -spec change_config(#config{}, state()) -> {result, undefined, state()}. change_config(Config, StateData) -> send_config_change_info(Config, StateData), NSD = remove_subscriptions(StateData#state{config = Config}), case {(StateData#state.config)#config.persistent, Config#config.persistent} of {_, true} -> mod_muc:store_room(NSD#state.server_host, NSD#state.host, NSD#state.room, make_opts(NSD)); {true, false} -> mod_muc:forget_room(NSD#state.server_host, NSD#state.host, NSD#state.room); {false, false} -> ok end, case {(StateData#state.config)#config.members_only, Config#config.members_only} of {false, true} -> NSD1 = remove_nonmembers(NSD), {result, undefined, NSD1}; _ -> {result, undefined, NSD} end. -spec send_config_change_info(#config{}, state()) -> ok. send_config_change_info(Config, #state{config = Config}) -> ok; send_config_change_info(New, #state{config = Old} = StateData) -> Codes = case {Old#config.logging, New#config.logging} of {false, true} -> [170]; {true, false} -> [171]; _ -> [] end ++ case {Old#config.anonymous, New#config.anonymous} of {true, false} -> [172]; {false, true} -> [173]; _ -> [] end ++ case Old#config{anonymous = New#config.anonymous, vcard = New#config.vcard, logging = New#config.logging} of New -> []; _ -> [104] end, if Codes /= [] -> Message = #message{type = groupchat, id = randoms:get_string(), sub_els = [#muc_user{status_codes = Codes}]}, send_wrapped_multiple(StateData#state.jid, get_users_and_subscribers(StateData), Message, ?NS_MUCSUB_NODES_CONFIG, StateData); true -> ok end. -spec remove_nonmembers(state()) -> state(). remove_nonmembers(StateData) -> lists:foldl(fun ({_LJID, #user{jid = JID}}, SD) -> Affiliation = get_affiliation(JID, SD), case Affiliation of none -> catch send_kickban_presence(<<"">>, JID, <<"">>, 322, SD), set_role(JID, none, SD); _ -> SD end end, StateData, (?DICT):to_list(get_users_and_subscribers(StateData))). -spec set_opts([{atom(), any()}], state()) -> state(). set_opts([], StateData) -> StateData; set_opts([{Opt, Val} | Opts], StateData) -> NSD = case Opt of title -> StateData#state{config = (StateData#state.config)#config{title = Val}}; description -> StateData#state{config = (StateData#state.config)#config{description = Val}}; allow_change_subj -> StateData#state{config = (StateData#state.config)#config{allow_change_subj = Val}}; allow_query_users -> StateData#state{config = (StateData#state.config)#config{allow_query_users = Val}}; allow_private_messages -> StateData#state{config = (StateData#state.config)#config{allow_private_messages = Val}}; allow_private_messages_from_visitors -> StateData#state{config = (StateData#state.config)#config{allow_private_messages_from_visitors = Val}}; allow_visitor_nickchange -> StateData#state{config = (StateData#state.config)#config{allow_visitor_nickchange = Val}}; allow_visitor_status -> StateData#state{config = (StateData#state.config)#config{allow_visitor_status = Val}}; public -> StateData#state{config = (StateData#state.config)#config{public = Val}}; public_list -> StateData#state{config = (StateData#state.config)#config{public_list = Val}}; persistent -> StateData#state{config = (StateData#state.config)#config{persistent = Val}}; moderated -> StateData#state{config = (StateData#state.config)#config{moderated = Val}}; members_by_default -> StateData#state{config = (StateData#state.config)#config{members_by_default = Val}}; members_only -> StateData#state{config = (StateData#state.config)#config{members_only = Val}}; allow_user_invites -> StateData#state{config = (StateData#state.config)#config{allow_user_invites = Val}}; password_protected -> StateData#state{config = (StateData#state.config)#config{password_protected = Val}}; captcha_protected -> StateData#state{config = (StateData#state.config)#config{captcha_protected = Val}}; password -> StateData#state{config = (StateData#state.config)#config{password = Val}}; anonymous -> StateData#state{config = (StateData#state.config)#config{anonymous = Val}}; presence_broadcast -> StateData#state{config = (StateData#state.config)#config{presence_broadcast = Val}}; logging -> StateData#state{config = (StateData#state.config)#config{logging = Val}}; mam -> StateData#state{config = (StateData#state.config)#config{mam = Val}}; captcha_whitelist -> StateData#state{config = (StateData#state.config)#config{captcha_whitelist = (?SETS):from_list(Val)}}; allow_voice_requests -> StateData#state{config = (StateData#state.config)#config{allow_voice_requests = Val}}; voice_request_min_interval -> StateData#state{config = (StateData#state.config)#config{voice_request_min_interval = Val}}; max_users -> ServiceMaxUsers = get_service_max_users(StateData), MaxUsers = if Val =< ServiceMaxUsers -> Val; true -> ServiceMaxUsers end, StateData#state{config = (StateData#state.config)#config{max_users = MaxUsers}}; vcard -> StateData#state{config = (StateData#state.config)#config{vcard = Val}}; allow_subscription -> StateData#state{config = (StateData#state.config)#config{allow_subscription = Val}}; subscribers -> Subscribers = lists:foldl( fun({JID, Nick, Nodes}, Acc) -> BareJID = jid:remove_resource(JID), ?DICT:store( jid:tolower(BareJID), #subscriber{jid = BareJID, nick = Nick, nodes = Nodes}, Acc) end, ?DICT:new(), Val), StateData#state{subscribers = Subscribers}; affiliations -> StateData#state{affiliations = (?DICT):from_list(Val)}; subject -> StateData#state{subject = Val}; subject_author -> StateData#state{subject_author = Val}; _ -> StateData end, set_opts(Opts, NSD). -define(MAKE_CONFIG_OPT(Opt), {get_config_opt_name(Opt), element(Opt, Config)}). -spec make_opts(state()) -> [{atom(), any()}]. make_opts(StateData) -> Config = StateData#state.config, Subscribers = (?DICT):fold( fun(_LJID, Sub, Acc) -> [{Sub#subscriber.jid, Sub#subscriber.nick, Sub#subscriber.nodes}|Acc] end, [], StateData#state.subscribers), [?MAKE_CONFIG_OPT(#config.title), ?MAKE_CONFIG_OPT(#config.description), ?MAKE_CONFIG_OPT(#config.allow_change_subj), ?MAKE_CONFIG_OPT(#config.allow_query_users), ?MAKE_CONFIG_OPT(#config.allow_private_messages), ?MAKE_CONFIG_OPT(#config.allow_private_messages_from_visitors), ?MAKE_CONFIG_OPT(#config.allow_visitor_status), ?MAKE_CONFIG_OPT(#config.allow_visitor_nickchange), ?MAKE_CONFIG_OPT(#config.public), ?MAKE_CONFIG_OPT(#config.public_list), ?MAKE_CONFIG_OPT(#config.persistent), ?MAKE_CONFIG_OPT(#config.moderated), ?MAKE_CONFIG_OPT(#config.members_by_default), ?MAKE_CONFIG_OPT(#config.members_only), ?MAKE_CONFIG_OPT(#config.allow_user_invites), ?MAKE_CONFIG_OPT(#config.password_protected), ?MAKE_CONFIG_OPT(#config.captcha_protected), ?MAKE_CONFIG_OPT(#config.password), ?MAKE_CONFIG_OPT(#config.anonymous), ?MAKE_CONFIG_OPT(#config.logging), ?MAKE_CONFIG_OPT(#config.max_users), ?MAKE_CONFIG_OPT(#config.allow_voice_requests), ?MAKE_CONFIG_OPT(#config.allow_subscription), ?MAKE_CONFIG_OPT(#config.mam), ?MAKE_CONFIG_OPT(#config.presence_broadcast), ?MAKE_CONFIG_OPT(#config.voice_request_min_interval), ?MAKE_CONFIG_OPT(#config.vcard), {captcha_whitelist, (?SETS):to_list((StateData#state.config)#config.captcha_whitelist)}, {affiliations, (?DICT):to_list(StateData#state.affiliations)}, {subject, StateData#state.subject}, {subject_author, StateData#state.subject_author}, {subscribers, Subscribers}]. -spec destroy_room(muc_destroy(), state()) -> {result, undefined, stop}. destroy_room(DEl, StateData) -> Destroy = DEl#muc_destroy{xmlns = ?NS_MUC_USER}, lists:foreach( fun({_LJID, Info}) -> Nick = Info#user.nick, Item = #muc_item{affiliation = none, role = none}, Packet = #presence{ type = unavailable, sub_els = [#muc_user{items = [Item], destroy = Destroy}]}, send_wrapped(jid:replace_resource(StateData#state.jid, Nick), Info#user.jid, Packet, ?NS_MUCSUB_NODES_CONFIG, StateData) end, (?DICT):to_list(get_users_and_subscribers(StateData))), case (StateData#state.config)#config.persistent of true -> mod_muc:forget_room(StateData#state.server_host, StateData#state.host, StateData#state.room); false -> ok end, {result, undefined, stop}. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % Disco -define(CONFIG_OPT_TO_FEATURE(Opt, Fiftrue, Fiffalse), case Opt of true -> Fiftrue; false -> Fiffalse end). -spec process_iq_disco_info(jid(), iq(), state()) -> {result, disco_info()} | {error, stanza_error()}. process_iq_disco_info(_From, #iq{type = set, lang = Lang}, _StateData) -> Txt = <<"Value 'set' of 'type' attribute is not allowed">>, {error, xmpp:err_not_allowed(Txt, Lang)}; process_iq_disco_info(_From, #iq{type = get, lang = Lang}, StateData) -> Config = StateData#state.config, Feats = [?NS_VCARD, ?NS_MUC, ?CONFIG_OPT_TO_FEATURE((Config#config.public), <<"muc_public">>, <<"muc_hidden">>), ?CONFIG_OPT_TO_FEATURE((Config#config.persistent), <<"muc_persistent">>, <<"muc_temporary">>), ?CONFIG_OPT_TO_FEATURE((Config#config.members_only), <<"muc_membersonly">>, <<"muc_open">>), ?CONFIG_OPT_TO_FEATURE((Config#config.anonymous), <<"muc_semianonymous">>, <<"muc_nonanonymous">>), ?CONFIG_OPT_TO_FEATURE((Config#config.moderated), <<"muc_moderated">>, <<"muc_unmoderated">>), ?CONFIG_OPT_TO_FEATURE((Config#config.password_protected), <<"muc_passwordprotected">>, <<"muc_unsecured">>)] ++ case Config#config.allow_subscription of true -> [?NS_MUCSUB]; false -> [] end ++ case {gen_mod:is_loaded(StateData#state.server_host, mod_mam), Config#config.mam} of {true, true} -> [?NS_MAM_TMP, ?NS_MAM_0, ?NS_MAM_1]; _ -> [] end, {result, #disco_info{xdata = [iq_disco_info_extras(Lang, StateData)], identities = [#identity{category = <<"conference">>, type = <<"text">>, name = get_title(StateData)}], features = Feats}}. -spec iq_disco_info_extras(binary(), state()) -> xdata(). iq_disco_info_extras(Lang, StateData) -> Fs = [{description, (StateData#state.config)#config.description}, {occupants, ?DICT:size(StateData#state.users)}], #xdata{type = result, fields = muc_roominfo:encode( Fs, fun(T) -> translate:translate(Lang, T) end)}. -spec process_iq_disco_items(jid(), iq(), state()) -> {error, stanza_error()} | {result, disco_items()}. process_iq_disco_items(_From, #iq{type = set, lang = Lang}, _StateData) -> Txt = <<"Value 'set' of 'type' attribute is not allowed">>, {error, xmpp:err_not_allowed(Txt, Lang)}; process_iq_disco_items(From, #iq{type = get}, StateData) -> case (StateData#state.config)#config.public_list of true -> {result, get_mucroom_disco_items(StateData)}; _ -> case is_occupant_or_admin(From, StateData) of true -> {result, get_mucroom_disco_items(StateData)}; _ -> %% If the list of occupants is private, %% the room MUST return an empty element %% (http://xmpp.org/extensions/xep-0045.html#disco-roomitems) {result, #disco_items{}} end end. -spec process_iq_captcha(jid(), iq(), state()) -> {error, stanza_error()} | {result, undefined}. process_iq_captcha(_From, #iq{type = get, lang = Lang}, _StateData) -> Txt = <<"Value 'get' of 'type' attribute is not allowed">>, {error, xmpp:err_not_allowed(Txt, Lang)}; process_iq_captcha(_From, #iq{type = set, lang = Lang, sub_els = [SubEl]}, _StateData) -> case ejabberd_captcha:process_reply(SubEl) of ok -> {result, undefined}; {error, malformed} -> Txt = <<"Incorrect CAPTCHA submit">>, {error, xmpp:err_bad_request(Txt, Lang)}; _ -> Txt = <<"The CAPTCHA verification has failed">>, {error, xmpp:err_not_allowed(Txt, Lang)} end. -spec process_iq_vcard(jid(), iq(), state()) -> {result, vcard_temp() | xmlel()} | {result, undefined, state()} | {error, stanza_error()}. process_iq_vcard(_From, #iq{type = get}, StateData) -> #state{config = #config{vcard = VCardRaw}} = StateData, case fxml_stream:parse_element(VCardRaw) of #xmlel{} = VCard -> {result, VCard}; {error, _} -> {error, xmpp:err_item_not_found()} end; process_iq_vcard(From, #iq{type = set, lang = Lang, sub_els = [SubEl]}, StateData) -> case get_affiliation(From, StateData) of owner -> VCardRaw = fxml:element_to_binary(xmpp:encode(SubEl)), Config = StateData#state.config, NewConfig = Config#config{vcard = VCardRaw}, change_config(NewConfig, StateData); _ -> ErrText = <<"Owner privileges required">>, {error, xmpp:err_forbidden(ErrText, Lang)} end. -spec process_iq_mucsub(jid(), iq(), state()) -> {error, stanza_error()} | {result, undefined | muc_subscribe(), state()} | {ignore, state()}. process_iq_mucsub(_From, #iq{type = set, lang = Lang, sub_els = [#muc_subscribe{}]}, #state{config = #config{allow_subscription = false}}) -> {error, xmpp:err_not_allowed(<<"Subscriptions are not allowed">>, Lang)}; process_iq_mucsub(From, #iq{type = set, lang = Lang, sub_els = [#muc_subscribe{nick = Nick}]} = Packet, StateData) -> LBareJID = jid:tolower(jid:remove_resource(From)), case (?DICT):find(LBareJID, StateData#state.subscribers) of {ok, #subscriber{nick = Nick1}} when Nick1 /= Nick -> Nodes = get_subscription_nodes(Packet), case {nick_collision(From, Nick, StateData), mod_muc:can_use_nick(StateData#state.server_host, StateData#state.host, From, Nick)} of {true, _} -> ErrText = <<"That nickname is already in use by another occupant">>, {error, xmpp:err_conflict(ErrText, Lang)}; {_, false} -> ErrText = <<"That nickname is registered by another person">>, {error, xmpp:err_conflict(ErrText, Lang)}; _ -> NewStateData = set_subscriber(From, Nick, Nodes, StateData), {result, subscribe_result(Packet), NewStateData} end; {ok, #subscriber{}} -> Nodes = get_subscription_nodes(Packet), NewStateData = set_subscriber(From, Nick, Nodes, StateData), {result, subscribe_result(Packet), NewStateData}; error -> add_new_user(From, Nick, Packet, StateData) end; process_iq_mucsub(From, #iq{type = set, sub_els = [#muc_unsubscribe{}]}, StateData) -> LBareJID = jid:tolower(jid:remove_resource(From)), case ?DICT:find(LBareJID, StateData#state.subscribers) of {ok, #subscriber{nick = Nick}} -> Nicks = ?DICT:erase(Nick, StateData#state.subscriber_nicks), Subscribers = ?DICT:erase(LBareJID, StateData#state.subscribers), NewStateData = StateData#state{subscribers = Subscribers, subscriber_nicks = Nicks}, store_room(NewStateData), NewStateData2 = case close_room_if_temporary_and_empty(NewStateData) of {stop, normal, _} -> stop; {next_state, normal_state, SD} -> SD end, {result, undefined, NewStateData2}; _ -> {result, undefined, StateData} end; process_iq_mucsub(From, #iq{type = get, lang = Lang, sub_els = [#muc_subscriptions{}]}, StateData) -> FAffiliation = get_affiliation(From, StateData), FRole = get_role(From, StateData), if FRole == moderator; FAffiliation == owner; FAffiliation == admin -> JIDs = dict:fold( fun(_, #subscriber{jid = J}, Acc) -> [J|Acc] end, [], StateData#state.subscribers), {result, #muc_subscriptions{list = JIDs}, StateData}; true -> Txt = <<"Moderator privileges required">>, {error, xmpp:err_forbidden(Txt, Lang)} end; process_iq_mucsub(_From, #iq{type = get, lang = Lang}, _StateData) -> Txt = <<"Value 'get' of 'type' attribute is not allowed">>, {error, xmpp:err_bad_request(Txt, Lang)}. remove_subscriptions(StateData) -> if not (StateData#state.config)#config.allow_subscription -> StateData#state{subscribers = ?DICT:new(), subscriber_nicks = ?DICT:new()}; true -> StateData end. -spec get_subscription_nodes(iq()) -> [binary()]. get_subscription_nodes(#iq{sub_els = [#muc_subscribe{events = Nodes}]}) -> lists:filter( fun(Node) -> lists:member(Node, [?NS_MUCSUB_NODES_PRESENCE, ?NS_MUCSUB_NODES_MESSAGES, ?NS_MUCSUB_NODES_AFFILIATIONS, ?NS_MUCSUB_NODES_SUBJECT, ?NS_MUCSUB_NODES_CONFIG, ?NS_MUCSUB_NODES_PARTICIPANTS]) end, Nodes); get_subscription_nodes(_) -> []. -spec subscribe_result(iq()) -> muc_subscribe(). subscribe_result(#iq{sub_els = [#muc_subscribe{nick = Nick}]} = Packet) -> #muc_subscribe{nick = Nick, events = get_subscription_nodes(Packet)}. -spec get_title(state()) -> binary(). get_title(StateData) -> case (StateData#state.config)#config.title of <<"">> -> StateData#state.room; Name -> Name end. -spec get_roomdesc_reply(jid(), state(), binary()) -> {item, binary()} | false. get_roomdesc_reply(JID, StateData, Tail) -> IsOccupantOrAdmin = is_occupant_or_admin(JID, StateData), if (StateData#state.config)#config.public or IsOccupantOrAdmin -> if (StateData#state.config)#config.public_list or IsOccupantOrAdmin -> {item, <<(get_title(StateData))/binary,Tail/binary>>}; true -> {item, get_title(StateData)} end; true -> false end. -spec get_roomdesc_tail(state(), binary()) -> binary(). get_roomdesc_tail(StateData, Lang) -> Desc = case (StateData#state.config)#config.public of true -> <<"">>; _ -> translate:translate(Lang, <<"private, ">>) end, Len = (?DICT):size(StateData#state.users), <<" (", Desc/binary, (integer_to_binary(Len))/binary, ")">>. -spec get_mucroom_disco_items(state()) -> disco_items(). get_mucroom_disco_items(StateData) -> Items = lists:map( fun({_LJID, Info}) -> Nick = Info#user.nick, #disco_item{jid = jid:make(StateData#state.room, StateData#state.host, Nick), name = Nick} end, (?DICT):to_list(StateData#state.users)), #disco_items{items = Items}. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % Voice request support -spec prepare_request_form(jid(), binary(), binary()) -> message(). prepare_request_form(Requester, Nick, Lang) -> Title = translate:translate(Lang, <<"Voice request">>), Instruction = translate:translate( Lang, <<"Either approve or decline the voice request.">>), Fs = muc_request:encode([{role, participant}, {jid, Requester}, {roomnick, Nick}, {request_allow, false}], fun(T) -> translate:translate(Lang, T) end), #message{type = normal, sub_els = [#xdata{type = form, title = Title, instructions = [Instruction], fields = Fs}]}. -spec send_voice_request(jid(), binary(), state()) -> ok. send_voice_request(From, Lang, StateData) -> Moderators = search_role(moderator, StateData), FromNick = find_nick_by_jid(From, StateData), lists:foreach(fun ({_, User}) -> ejabberd_router:route( StateData#state.jid, User#user.jid, prepare_request_form(From, FromNick, Lang)) end, Moderators). %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % Invitation support -spec check_invitation(jid(), muc_invite(), binary(), state()) -> {error, stanza_error()} | jid(). check_invitation(From, Invitation, Lang, StateData) -> FAffiliation = get_affiliation(From, StateData), CanInvite = (StateData#state.config)#config.allow_user_invites orelse FAffiliation == admin orelse FAffiliation == owner, case CanInvite of false -> Txt = <<"Invitations are not allowed in this conference">>, {error, xmpp:err_not_allowed(Txt, Lang)}; true -> #muc_invite{to = JID, reason = Reason} = Invitation, Invite = Invitation#muc_invite{to = undefined, from = From}, Password = case (StateData#state.config)#config.password_protected of true -> (StateData#state.config)#config.password; false -> undefined end, XUser = #muc_user{password = Password, invites = [Invite]}, XConference = #x_conference{jid = jid:make(StateData#state.room, StateData#state.host), reason = Reason}, Body = iolist_to_binary( [io_lib:format( translate:translate( Lang, <<"~s invites you to the room ~s">>), [jid:to_string(From), jid:to_string({StateData#state.room, StateData#state.host, <<"">>})]), case (StateData#state.config)#config.password_protected of true -> <<", ", (translate:translate( Lang, <<"the password is">>))/binary, " '", ((StateData#state.config)#config.password)/binary, "'">>; _ -> <<"">> end, case Reason of <<"">> -> <<"">>; _ -> <<" (", Reason/binary, ") ">> end]), Msg = #message{type = normal, body = xmpp:mk_text(Body), sub_els = [XUser, XConference]}, ejabberd_router:route(StateData#state.jid, JID, Msg), JID end. %% Handle a message sent to the room by a non-participant. %% If it is a decline, send to the inviter. %% Otherwise, an error message is sent to the sender. -spec handle_roommessage_from_nonparticipant(message(), state(), jid()) -> ok. handle_roommessage_from_nonparticipant(Packet, StateData, From) -> case xmpp:get_subtag(Packet, #muc_user{}) of #muc_user{decline = #muc_decline{to = #jid{} = To} = Decline} = XUser -> NewDecline = Decline#muc_decline{to = undefined, from = From}, NewXUser = XUser#muc_user{decline = NewDecline}, NewPacket = xmpp:set_subtag(Packet, NewXUser), ejabberd_router:route(StateData#state.jid, To, NewPacket); _ -> ErrText = <<"Only occupants are allowed to send messages " "to the conference">>, Err = xmpp:err_not_acceptable(ErrText, xmpp:get_lang(Packet)), ejabberd_router:route_error(StateData#state.jid, From, Packet, Err) end. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % Logging add_to_log(Type, Data, StateData) when Type == roomconfig_change_disabledlogging -> mod_muc_log:add_to_log(StateData#state.server_host, roomconfig_change, Data, StateData#state.jid, make_opts(StateData)); add_to_log(Type, Data, StateData) -> case (StateData#state.config)#config.logging of true -> mod_muc_log:add_to_log(StateData#state.server_host, Type, Data, StateData#state.jid, make_opts(StateData)); false -> ok end. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% Users number checking -spec tab_add_online_user(jid(), state()) -> ok. tab_add_online_user(JID, StateData) -> {LUser, LServer, LResource} = jid:tolower(JID), US = {LUser, LServer}, Room = StateData#state.room, Host = StateData#state.host, catch ets:insert(muc_online_users, #muc_online_users{us = US, resource = LResource, room = Room, host = Host}), ok. -spec tab_remove_online_user(jid(), state()) -> ok. tab_remove_online_user(JID, StateData) -> {LUser, LServer, LResource} = jid:tolower(JID), US = {LUser, LServer}, Room = StateData#state.room, Host = StateData#state.host, catch ets:delete_object(muc_online_users, #muc_online_users{us = US, resource = LResource, room = Room, host = Host}), ok. -spec tab_count_user(jid()) -> non_neg_integer(). tab_count_user(JID) -> {LUser, LServer, _} = jid:tolower(JID), US = {LUser, LServer}, case catch ets:select(muc_online_users, [{#muc_online_users{us = US, _ = '_'}, [], [[]]}]) of Res when is_list(Res) -> length(Res); _ -> 0 end. -spec element_size(stanza()) -> non_neg_integer(). element_size(El) -> byte_size(fxml:element_to_binary(xmpp:encode(El, ?NS_CLIENT))). -spec store_room(state()) -> ok. store_room(StateData) -> if (StateData#state.config)#config.persistent -> mod_muc:store_room(StateData#state.server_host, StateData#state.host, StateData#state.room, make_opts(StateData)); true -> ok end. -spec send_wrapped(jid(), jid(), stanza(), binary(), state()) -> ok. send_wrapped(From, To, Packet, Node, State) -> LTo = jid:tolower(To), LBareTo = jid:tolower(jid:remove_resource(To)), IsOffline = case ?DICT:find(LTo, State#state.users) of {ok, #user{last_presence = undefined}} -> true; error -> true; _ -> false end, if IsOffline -> case ?DICT:find(LBareTo, State#state.subscribers) of {ok, #subscriber{nodes = Nodes, jid = JID}} -> case lists:member(Node, Nodes) of true -> NewPacket = wrap(From, JID, Packet, Node), ejabberd_router:route(State#state.jid, JID, NewPacket); false -> ok end; _ -> ok end; true -> ejabberd_router:route(From, To, Packet) end. -spec wrap(jid(), jid(), stanza(), binary()) -> message(). wrap(From, To, Packet, Node) -> El = xmpp:encode(xmpp:set_from_to(Packet, From, To)), #message{ sub_els = [#ps_event{ items = #ps_items{ node = Node, items = [#ps_item{ id = randoms:get_string(), xml_els = [El]}]}}]}. %% -spec send_multiple(jid(), binary(), [#user{}], stanza()) -> ok. %% send_multiple(From, Server, Users, Packet) -> %% JIDs = [ User#user.jid || {_, User} <- ?DICT:to_list(Users)], %% ejabberd_router_multicast:route_multicast(From, Server, JIDs, Packet). -spec send_wrapped_multiple(jid(), [#user{}], stanza(), binary(), state()) -> ok. send_wrapped_multiple(From, Users, Packet, Node, State) -> lists:foreach( fun({_, #user{jid = To}}) -> send_wrapped(From, To, Packet, Node, State) end, ?DICT:to_list(Users)). %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% Detect messange stanzas that don't have meaninful content -spec has_body_or_subject(message()) -> boolean(). has_body_or_subject(#message{body = Body, subject = Subj}) -> Body /= [] orelse Subj /= [].