%%%---------------------------------------------------------------------- %%% File : mod_muc.erl %%% Author : Alexey Shchepin %%% Purpose : MUC support (JEP-0045) %%% Created : 19 Mar 2003 by Alexey Shchepin %%% %%% %%% ejabberd, Copyright (C) 2002-2009 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., 59 Temple Place, Suite 330, Boston, MA %%% 02111-1307 USA %%% %%%---------------------------------------------------------------------- -module(mod_muc). -author('alexey@process-one.net'). -behaviour(gen_server). -behaviour(gen_mod). %% API -export([start_link/2, start/2, stop/1, room_destroyed/4, store_room/3, restore_room/2, forget_room/2, create_room/5, process_iq_disco_items/4, can_use_nick/3]). %% gen_server callbacks -export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3]). -include_lib("exmpp/include/exmpp.hrl"). -include("ejabberd.hrl"). -include("jlib.hrl"). -record(muc_room, {name_host, opts}). -record(muc_online_room, {name_host, pid}). -record(muc_registered, {us_host, nick}). -record(state, {host, server_host, access, history_size, default_room_opts, room_shaper}). -define(PROCNAME, ejabberd_mod_muc). %%==================================================================== %% API %%==================================================================== %%-------------------------------------------------------------------- %% Function: start_link() -> {ok,Pid} | ignore | {error,Error} %% Description: Starts the server %%-------------------------------------------------------------------- start_link(Host, Opts) -> Proc = gen_mod:get_module_proc(Host, ?PROCNAME), gen_server:start_link({local, Proc}, ?MODULE, [Host, Opts], []). start(Host, Opts) -> start_supervisor(Host), Proc = gen_mod:get_module_proc(Host, ?PROCNAME), ChildSpec = {Proc, {?MODULE, start_link, [Host, Opts]}, temporary, 1000, worker, [?MODULE]}, supervisor:start_child(ejabberd_sup, ChildSpec). stop(Host) -> stop_supervisor(Host), Proc = gen_mod:get_module_proc(Host, ?PROCNAME), gen_server:call(Proc, stop), supervisor:delete_child(ejabberd_sup, Proc). %% This function is called by a room in three situations: %% A) The owner of the room destroyed it %% B) The only participant of a temporary room leaves it %% C) mod_muc:stop was called, and each room is being terminated %% In this case, the mod_muc process died before the room processes %% So the message sending must be catched room_destroyed(Host, Room, Pid, ServerHost) when is_binary(Host), is_binary(Room) -> catch gen_mod:get_module_proc(ServerHost, ?PROCNAME) ! {room_destroyed, {Room, Host}, Pid}, ok. %% @doc Create a room. %% If Opts = default, the default room options are used. %% Else use the passed options as defined in mod_muc_room. create_room(Host, Name, From, Nick, Opts) -> Proc = gen_mod:get_module_proc(Host, ?PROCNAME), gen_server:call(Proc, {create, Name, From, Nick, Opts}). store_room(Host, Name, Opts) when is_binary(Host), is_binary(Name) -> F = fun() -> mnesia:write(#muc_room{name_host = {Name, Host}, opts = Opts}) end, mnesia:transaction(F). restore_room(Host, Name) when is_binary(Host), is_binary(Name) -> case catch mnesia:dirty_read(muc_room, {Name, Host}) of [#muc_room{opts = Opts}] -> Opts; _ -> error end. forget_room(Host, Name) when is_binary(Host), is_binary(Name) -> F = fun() -> mnesia:delete({muc_room, {Name, Host}}) end, mnesia:transaction(F). process_iq_disco_items(Host, From, To, #iq{lang = Lang} = IQ) when is_binary(Host) -> Rsm = jlib:rsm_decode(IQ), Res = exmpp_iq:result(IQ, #xmlel{ns = ?NS_DISCO_ITEMS, name = 'query', children = iq_disco_items(Host, From, Lang, Rsm)}), ejabberd_router:route(To, From, exmpp_iq:iq_to_xmlel(Res)). can_use_nick(_Host, _JID, <<>>) -> false; can_use_nick(Host, JID, Nick) when is_binary(Host), is_binary(Nick) -> LUS = {exmpp_jid:lnode(JID), exmpp_jid:ldomain(JID)}, case catch mnesia:dirty_select( muc_registered, [{#muc_registered{us_host = '$1', nick = Nick, _ = '_'}, [{'==', {element, 2, '$1'}, Host}], ['$_']}]) of {'EXIT', _Reason} -> true; [] -> true; [#muc_registered{us_host = {U, _Host}}] -> U == LUS end. %%==================================================================== %% gen_server callbacks %%==================================================================== %%-------------------------------------------------------------------- %% Function: init(Args) -> {ok, State} | %% {ok, State, Timeout} | %% ignore | %% {stop, Reason} %% Description: Initiates the server %%-------------------------------------------------------------------- init([Host, Opts]) -> mnesia:create_table(muc_room, [{disc_copies, [node()]}, {attributes, record_info(fields, muc_room)}]), mnesia:create_table(muc_registered, [{disc_copies, [node()]}, {attributes, record_info(fields, muc_registered)}]), mnesia:create_table(muc_online_room, [{ram_copies, [node()]}, {attributes, record_info(fields, muc_online_room)}]), mnesia:add_table_copy(muc_online_room, node(), ram_copies), catch ets:new(muc_online_users, [bag, named_table, public, {keypos, 2}]), MyHost_L = gen_mod:get_opt_host(Host, Opts, "conference.@HOST@"), MyHost = list_to_binary(MyHost_L), update_tables(MyHost), clean_table_from_bad_node(node(), MyHost), mnesia:add_table_index(muc_registered, nick), mnesia:subscribe(system), Access = gen_mod:get_opt(access, Opts, all), AccessCreate = gen_mod:get_opt(access_create, Opts, all), AccessAdmin = gen_mod:get_opt(access_admin, Opts, none), AccessPersistent = gen_mod:get_opt(access_persistent, Opts, all), HistorySize = gen_mod:get_opt(history_size, Opts, 20), DefRoomOpts = gen_mod:get_opt(default_room_options, Opts, []), RoomShaper = gen_mod:get_opt(room_shaper, Opts, none), ejabberd_router:register_route(MyHost_L), load_permanent_rooms(MyHost, Host, {Access, AccessCreate, AccessAdmin, AccessPersistent}, HistorySize, RoomShaper), {ok, #state{host = MyHost, server_host = Host, access = {Access, AccessCreate, AccessAdmin, AccessPersistent}, default_room_opts = DefRoomOpts, history_size = HistorySize, room_shaper = RoomShaper}}. %%-------------------------------------------------------------------- %% Function: %% handle_call(Request, From, State) -> {reply, Reply, State} | %% {reply, Reply, State, Timeout} | %% {noreply, State} | %% {noreply, State, Timeout} | %% {stop, Reason, Reply, State} | %% {stop, Reason, State} %% Description: Handling call messages %%-------------------------------------------------------------------- handle_call(stop, _From, State) -> {stop, normal, ok, State}; handle_call({create, Room, From, Nick, Opts}, _From, #state{host = Host, server_host = ServerHost, access = Access, default_room_opts = DefOpts, history_size = HistorySize, room_shaper = RoomShaper} = State) -> ?DEBUG("MUC: create new room '~s'~n", [Room]), NewOpts = case Opts of default -> DefOpts; _ -> Opts end, {ok, Pid} = mod_muc_room:start( Host, ServerHost, Access, Room, HistorySize, RoomShaper, From, Nick, NewOpts), register_room(Host, Room, Pid), {reply, ok, State}. %%-------------------------------------------------------------------- %% Function: handle_cast(Msg, State) -> {noreply, State} | %% {noreply, State, Timeout} | %% {stop, Reason, State} %% Description: Handling cast messages %%-------------------------------------------------------------------- handle_cast(_Msg, State) -> {noreply, State}. %%-------------------------------------------------------------------- %% Function: handle_info(Info, State) -> {noreply, State} | %% {noreply, State, Timeout} | %% {stop, Reason, State} %% Description: Handling all non call/cast messages %%-------------------------------------------------------------------- handle_info({route, From, To, Packet}, #state{host = Host, server_host = ServerHost, access = Access, default_room_opts = DefRoomOpts, history_size = HistorySize, room_shaper = RoomShaper} = State) -> case catch do_route(Host, ServerHost, Access, HistorySize, RoomShaper, From, To, Packet, DefRoomOpts) of {'EXIT', Reason} -> ?ERROR_MSG("~p", [Reason]); _ -> ok end, {noreply, State}; handle_info({room_destroyed, RoomHost, Pid}, State) -> F = fun() -> mnesia:delete_object(#muc_online_room{name_host = RoomHost, pid = Pid}) end, mnesia:transaction(F), {noreply, State}; handle_info({mnesia_system_event, {mnesia_down, Node}}, State) -> clean_table_from_bad_node(Node), {noreply, State}; handle_info(_Info, State) -> {noreply, State}. %%-------------------------------------------------------------------- %% Function: terminate(Reason, State) -> void() %% Description: This function is called by a gen_server when it is about to %% terminate. It should be the opposite of Module:init/1 and do any necessary %% cleaning up. When it returns, the gen_server terminates with Reason. %% The return value is ignored. %%-------------------------------------------------------------------- terminate(_Reason, State) -> ejabberd_router:unregister_route(binary_to_list(State#state.host)), ok. %%-------------------------------------------------------------------- %% Func: code_change(OldVsn, State, Extra) -> {ok, NewState} %% Description: Convert process state when code is changed %%-------------------------------------------------------------------- code_change(_OldVsn, State, _Extra) -> {ok, State}. %%-------------------------------------------------------------------- %%% Internal functions %%-------------------------------------------------------------------- start_supervisor(Host) -> Proc = gen_mod:get_module_proc(Host, ejabberd_mod_muc_sup), ChildSpec = {Proc, {ejabberd_tmp_sup, start_link, [Proc, mod_muc_room]}, permanent, infinity, supervisor, [ejabberd_tmp_sup]}, supervisor:start_child(ejabberd_sup, ChildSpec). stop_supervisor(Host) -> Proc = gen_mod:get_module_proc(Host, ejabberd_mod_muc_sup), supervisor:terminate_child(ejabberd_sup, Proc), supervisor:delete_child(ejabberd_sup, Proc). do_route(Host, ServerHost, Access, HistorySize, RoomShaper, From, To, Packet, DefRoomOpts) -> {AccessRoute, _AccessCreate, _AccessAdmin, _AccessPersistent} = Access, case acl:match_rule(ServerHost, AccessRoute, From) of allow -> do_route1(Host, ServerHost, Access, HistorySize, RoomShaper, From, To, Packet, DefRoomOpts); _ -> Lang = exmpp_stanza:get_lang(Packet), ErrText = "Access denied by service policy", Err = exmpp_iq:error(Packet,exmpp_stanza:error(Packet#xmlel.ns, 'forbidden', {Lang,ErrText})), ejabberd_router:route(To, From, Err) end. do_route1(Host, ServerHost, Access, HistorySize, RoomShaper, From, To, Packet, DefRoomOpts) -> {_AccessRoute, AccessCreate, AccessAdmin, _AccessPersistent} = Access, Room = exmpp_jid:lnode(To), Nick = exmpp_jid:lresource(To), #xmlel{name = Name} = Packet, case Room of 'undefined' -> case Nick of 'undefined' -> case Name of 'iq' -> case exmpp_iq:xmlel_to_iq(Packet) of #iq{type = get, ns = ?NS_DISCO_INFO = XMLNS, payload = _SubEl, lang = Lang} = IQ -> ResPayload = #xmlel{ns = XMLNS, name = 'query', children = iq_disco_info(Lang)}, Res = exmpp_iq:result(IQ, ResPayload), ejabberd_router:route(To, From, exmpp_iq:iq_to_xmlel(Res)); #iq{type = get, ns = ?NS_DISCO_ITEMS} = IQ -> spawn(?MODULE, process_iq_disco_items, [Host, From, To, IQ]); #iq{type = get, ns = ?NS_INBAND_REGISTER = XMLNS, lang = Lang} = IQ -> ResPayload = #xmlel{ns = XMLNS, name = 'query', children = iq_get_register_info(Host, From, Lang)}, Res = exmpp_iq:result(IQ,ResPayload), ejabberd_router:route(To, From, exmpp_iq:iq_to_xmlel(Res)); #iq{type = set, ns = ?NS_INBAND_REGISTER , lang = Lang, payload = SubEl} = IQ -> case process_iq_register_set(Host, From, SubEl, Lang) of ok -> Res = exmpp_iq:result(IQ), ejabberd_router:route( To, From, exmpp_iq:iq_to_xmlel(Res)); {error, Error} -> Err = exmpp_iq:error(IQ,Error), ejabberd_router:route( To, From, exmpp_iq:iq_to_xmlel(Err)) end; #iq{type = get, ns = ?NS_VCARD, lang = Lang} = IQ -> Res = exmpp_iq:result(IQ,iq_get_vcard(Lang)), ejabberd_router:route(To, From, exmpp_iq:iq_to_xmlel(Res)); #iq{} = IQ -> Err = exmpp_iq:error(IQ,'feature-not-implemented'), ejabberd_router:route(To, From, Err); _ -> ok end; 'message' -> case exmpp_xml:get_attribute_as_list(Packet,type, "chat") of "error" -> ok; _ -> case acl:match_rule(ServerHost, AccessAdmin, From) of allow -> Msg = exmpp_xml:get_path(Packet, [{element,'body'},cdata]), broadcast_service_message(Host, Msg); _ -> Lang = exmpp_stanza:get_lang(Packet), ErrText = "Only service administrators " "are allowed to send service messages", Err = exmpp_iq:error(Packet,exmpp_stanza:error(Packet#xmlel.ns, 'forbidden', {Lang,ErrText})), ejabberd_router:route( To, From, Err) end end; 'presence' -> ok end; _ -> case exmpp_stanza:get_type(Packet) of <<"error">> -> ok; <<"result">> -> ok; _ -> Err = exmpp_iq:error(Packet,'item-not-found'), ejabberd_router:route(To, From, Err) end end; _ -> case mnesia:dirty_read(muc_online_room, {Room, Host}) of [] -> Type = exmpp_stanza:get_type(Packet), case {Name, Type} of {'presence', 'undefined'} -> case check_user_can_create_room(ServerHost, AccessCreate, From, Room) of true -> ?DEBUG("MUC: open new room '~s'~n", [Room]), {ok, Pid} = mod_muc_room:start( Host, ServerHost, Access, Room, HistorySize, RoomShaper, From, Nick, DefRoomOpts), register_room(Host, Room, Pid), mod_muc_room:route(Pid, From, Nick, Packet), ok; false -> Lang = exmpp_stanza:get_lang(Packet), ErrText = "Room creation is denied by service policy", Err = exmpp_stanza:reply_with_error(Packet,exmpp_stanza:error(Packet#xmlel.ns, 'forbidden', {Lang,ErrText})), ejabberd_router:route(To, From, Err) end; _ -> Lang = exmpp_stanza:get_lang(Packet), ErrText = "Conference room does not exist", Err = exmpp_stanza:reply_with_error(Packet, exmpp_stanza:error(Packet#xmlel.ns, 'item-not-found', {Lang,ErrText})), ejabberd_router:route(To, From, Err) end; [R] -> Pid = R#muc_online_room.pid, ?DEBUG("MUC: send to process ~p~n", [Pid]), mod_muc_room:route(Pid, From, Nick, Packet), ok end end. check_user_can_create_room(ServerHost, AccessCreate, From, RoomID) -> case acl:match_rule(ServerHost, AccessCreate, From) of allow -> (size(RoomID) =< gen_mod:get_module_opt(ServerHost, mod_muc, max_room_id, infinite)); _ -> false end. load_permanent_rooms(Host, ServerHost, Access, HistorySize, RoomShaper) -> case catch mnesia:dirty_select( muc_room, [{#muc_room{name_host = {'_', Host}, _ = '_'}, [], ['$_']}]) of {'EXIT', Reason} -> ?ERROR_MSG("~p", [Reason]), ok; Rs -> lists:foreach( fun(R) -> {Room, Host} = R#muc_room.name_host, case mnesia:dirty_read(muc_online_room, {Room, Host}) of [] -> {ok, Pid} = mod_muc_room:start( Host, ServerHost, Access, Room, HistorySize, RoomShaper, R#muc_room.opts), register_room(Host, Room, Pid); _ -> ok end end, Rs) end. register_room(Host, Room, Pid) when is_binary(Host), is_binary(Room) -> F = fun() -> mnesia:write(#muc_online_room{name_host = {Room, Host}, pid = Pid}) end, mnesia:transaction(F). iq_disco_info(Lang) -> [#xmlel{ns = ?NS_DISCO_INFO, name = 'identity', attrs = [?XMLATTR('category', <<"conference">>), ?XMLATTR('type', <<"text">>), ?XMLATTR('name', translate:translate(Lang, "Chatrooms"))]}, #xmlel{ns = ?NS_DISCO_INFO, name = 'feature', attrs = [?XMLATTR('var', ?NS_DISCO_INFO_s)]}, #xmlel{ns = ?NS_DISCO_INFO, name = 'feature', attrs = [?XMLATTR('var', ?NS_DISCO_ITEMS_s)]}, #xmlel{ns = ?NS_DISCO_INFO, name = 'feature', attrs = [?XMLATTR('var', ?NS_MUC_s)]}, #xmlel{ns = ?NS_DISCO_INFO, name = 'feature', attrs = [?XMLATTR('var', ?NS_INBAND_REGISTER_s)]}, #xmlel{ns = ?NS_DISCO_INFO, name = 'feature', attrs = [?XMLATTR('var', ?NS_RSM_s)]}, #xmlel{ns = ?NS_DISCO_INFO, name = 'feature', attrs = [?XMLATTR('var', ?NS_VCARD_s)]}]. iq_disco_items(Host, From, Lang, none) when is_binary(Host) -> lists:zf(fun(#muc_online_room{name_host = {Name, _Host}, pid = Pid}) -> case catch gen_fsm:sync_send_all_state_event( Pid, {get_disco_item, From, Lang}, 100) of {item, Desc} -> flush(), {true, #xmlel{name = 'item', attrs = [?XMLATTR('jid', exmpp_jid:jid_to_binary(Name, Host)), ?XMLATTR('name', Desc)]}}; _ -> false end end, get_vh_rooms(Host)); iq_disco_items(Host, From, Lang, Rsm) -> {Rooms, RsmO} = get_vh_rooms(Host, Rsm), RsmOut = jlib:rsm_encode(RsmO), lists:zf(fun(#muc_online_room{name_host = {Name, _Host}, pid = Pid}) -> case catch gen_fsm:sync_send_all_state_event( Pid, {get_disco_item, From, Lang}, 100) of {item, Desc} -> flush(), {true, {xmlelement, "item", [{"jid", jlib:jid_to_string({Name, Host, ""})}, {"name", Desc}], []}}; _ -> false end end, Rooms) ++ RsmOut. get_vh_rooms(Host, #rsm_in{max=M, direction=Direction, id=I, index=Index})-> AllRooms = lists:sort(get_vh_rooms(Host)), Count = erlang:length(AllRooms), Guard = case Direction of _ when Index =/= undefined -> [{'==', {element, 2, '$1'}, Host}]; aft -> [{'==', {element, 2, '$1'}, Host}, {'>=',{element, 1, '$1'} ,I}]; before when I =/= []-> [{'==', {element, 2, '$1'}, Host}, {'=<',{element, 1, '$1'} ,I}]; _ -> [{'==', {element, 2, '$1'}, Host}] end, L = lists:sort( mnesia:dirty_select(muc_online_room, [{#muc_online_room{name_host = '$1', _ = '_'}, Guard, ['$_']}])), L2 = if Index == undefined andalso Direction == before -> lists:reverse(lists:sublist(lists:reverse(L), 1, M)); Index == undefined -> lists:sublist(L, 1, M); Index > Count orelse Index < 0 -> []; true -> lists:sublist(L, Index+1, M) end, if L2 == [] -> {L2, #rsm_out{count=Count}}; true -> H = hd(L2), NewIndex = get_room_pos(H, AllRooms), T=lists:last(L2), {F, _}=H#muc_online_room.name_host, {Last, _}=T#muc_online_room.name_host, {L2, #rsm_out{first=F, last=Last, count=Count, index=NewIndex}} end. %% @doc Return the position of desired room in the list of rooms. %% The room must exist in the list. The count starts in 0. %% @spec (Desired::muc_online_room(), Rooms::[muc_online_room()]) -> integer() get_room_pos(Desired, Rooms) -> get_room_pos(Desired, Rooms, 0). get_room_pos(Desired, [HeadRoom | _], HeadPosition) when (Desired#muc_online_room.name_host == HeadRoom#muc_online_room.name_host) -> HeadPosition; get_room_pos(Desired, [_ | Rooms], HeadPosition) -> get_room_pos(Desired, Rooms, HeadPosition + 1). flush() -> receive _ -> flush() after 0 -> ok end. -define(XFIELD(Type, Label, Var, Val), #xmlel{name = "field", attrs = [?XMLATTR('type', Type), ?XMLATTR('label', translate:translate(Lang, Label)), ?XMLATTR('var', Var)], children = [#xmlel{name = 'value', children = [#xmlcdata{cdata = Val}]}]}). iq_get_register_info(Host, From, Lang) -> LUser = exmpp_jid:lnode(From), LServer = exmpp_jid:ldomain(From), LUS = {LUser, LServer}, {Nick, Registered} = case catch mnesia:dirty_read(muc_registered, {LUS, Host}) of {'EXIT', _Reason} -> {"", []}; [] -> {"", []}; [#muc_registered{nick = N}] -> {N, [#xmlel{name = 'registered'}]} end, Registered ++ [#xmlel{name = 'instructions' , children = [#xmlcdata{cdata = translate:translate(Lang, "You need an x:data capable client to register nickname")}]}, #xmlel{ns = ?NS_DATA_FORMS, name = 'x', children = [ #xmlel{ns = ?NS_DATA_FORMS, name = 'title', children = [#xmlcdata{cdata = [translate:translate(Lang, "Nickname Registration at "), Host]}]}, #xmlel{ns = ?NS_DATA_FORMS, name = 'instructions', children = [#xmlcdata{cdata = translate:translate(Lang, "Enter nickname you want to register")}]}, ?XFIELD(<<"text-single">>, "Nickname", <<"nick">>, Nick)]}]. iq_set_register_info(Host, From, Nick, Lang) when is_binary(Host), is_binary(Nick) -> LUser = exmpp_jid:lnode(From), LServer = exmpp_jid:ldomain(From), LUS = {LUser, LServer}, F = fun() -> case Nick of <<>> -> mnesia:delete({muc_registered, {LUS, Host}}), ok; _ -> Allow = case mnesia:select( muc_registered, [{#muc_registered{us_host = '$1', nick = Nick, _ = '_'}, [{'==', {element, 2, '$1'}, Host}], ['$_']}]) of [] -> true; [#muc_registered{us_host = {U, _Host}}] -> U == LUS end, if Allow -> mnesia:write( #muc_registered{us_host = {LUS, Host}, nick = Nick}), ok; true -> false end end end, case mnesia:transaction(F) of {atomic, ok} -> ok; {atomic, false} -> ErrText = "That nickname is registered by another person", %%TODO: Always in the jabber:client namespace? {error,exmpp_stanza:error(?NS_JABBER_CLIENT, 'conflict', {Lang, ErrText})}; _ -> {error, 'internal-server-error'} end. process_iq_register_set(Host, From, SubEl, Lang) -> % {xmlelement, _Name, _Attrs, Els} = SubEl, case exmpp_xml:get_element(SubEl,'remove') of undefined -> case exmpp_xml:get_child_elements(SubEl) of [#xmlel{ns= NS, name = 'x'} = XEl] -> case {NS, exmpp_stanza:get_type(XEl)} of {?NS_DATA_FORMS, <<"cancel">>} -> ok; {?NS_DATA_FORMS, <<"submit">>} -> XData = jlib:parse_xdata_submit(XEl), case XData of invalid -> {error, 'bad-request'}; _ -> case lists:keysearch("nick", 1, XData) of false -> ErrText = "You must fill in field \"Nickname\" in the form", Err = exmpp_stanza:error(SubEl#xmlel.ns, 'not-acceptable', {Lang, translate:translate(Lang,ErrText)}), {error, Err}; {value, {_, [Nick]}} -> iq_set_register_info(Host, From, list_to_binary(Nick), Lang) end end; _ -> {error, 'bad-request'} end; _ -> {error, 'bad-request'} end; _ -> iq_set_register_info(Host, From, <<>>, Lang) end. iq_get_vcard(Lang) -> #xmlel{ns = ?NS_VCARD, name = 'vCard', children = [#xmlel{ns = ?NS_VCARD, name = 'FN', children = [#xmlcdata{cdata = <<"ejabberd/mod_muc">>}]}, #xmlel{ns = ?NS_VCARD, name = 'URL', children = [#xmlcdata{cdata = ?EJABBERD_URI}]}, #xmlel{ns = ?NS_VCARD, name = 'DESC', children = [#xmlcdata{cdata = translate:translate(Lang, "ejabberd MUC module") ++ "\nCopyright (c) 2003-2009 Alexey Shchepin"}]}]}. broadcast_service_message(Host, Msg) -> lists:foreach( fun(#muc_online_room{pid = Pid}) -> gen_fsm:send_all_state_event( Pid, {service_message, Msg}) end, get_vh_rooms(Host)). get_vh_rooms(Host) when is_binary(Host) -> mnesia:dirty_select(muc_online_room, [{#muc_online_room{name_host = '$1', _ = '_'}, [{'==', {element, 2, '$1'}, Host}], ['$_']}]). clean_table_from_bad_node(Node) -> F = fun() -> Es = mnesia:select( muc_online_room, [{#muc_online_room{pid = '$1', _ = '_'}, [{'==', {node, '$1'}, Node}], ['$_']}]), lists:foreach(fun(E) -> mnesia:delete_object(E) end, Es) end, mnesia:transaction(F). clean_table_from_bad_node(Node, Host) -> F = fun() -> Es = mnesia:select( muc_online_room, [{#muc_online_room{pid = '$1', name_host = {'_', Host}, _ = '_'}, [{'==', {node, '$1'}, Node}], ['$_']}]), lists:foreach(fun(E) -> mnesia:delete_object(E) end, Es) end, mnesia:transaction(F). update_tables(Host) -> update_muc_room_table(Host), update_muc_registered_table(Host). update_muc_room_table(Host) -> Fields = record_info(fields, muc_room), case mnesia:table_info(muc_room, attributes) of Fields -> ok; [name, opts] -> ?INFO_MSG("Converting muc_room table from " "{name, opts} format", []), {atomic, ok} = mnesia:create_table( mod_muc_tmp_table, [{disc_only_copies, [node()]}, {type, bag}, {local_content, true}, {record_name, muc_room}, {attributes, record_info(fields, muc_room)}]), mnesia:transform_table(muc_room, ignore, Fields), F1 = fun() -> mnesia:write_lock_table(mod_muc_tmp_table), mnesia:foldl( fun(#muc_room{name_host = Name} = R, _) -> mnesia:dirty_write( mod_muc_tmp_table, R#muc_room{name_host = {Name, Host}}) end, ok, muc_room) end, mnesia:transaction(F1), mnesia:clear_table(muc_room), F2 = fun() -> mnesia:write_lock_table(muc_room), mnesia:foldl( fun(R, _) -> mnesia:dirty_write(R) end, ok, mod_muc_tmp_table) end, mnesia:transaction(F2), mnesia:delete_table(mod_muc_tmp_table); _ -> ?INFO_MSG("Recreating muc_room table", []), mnesia:transform_table(muc_room, ignore, Fields) end. update_muc_registered_table(Host) -> Fields = record_info(fields, muc_registered), case mnesia:table_info(muc_registered, attributes) of Fields -> ok; [user, nick] -> ?INFO_MSG("Converting muc_registered table from " "{user, nick} format", []), {atomic, ok} = mnesia:create_table( mod_muc_tmp_table, [{disc_only_copies, [node()]}, {type, bag}, {local_content, true}, {record_name, muc_registered}, {attributes, record_info(fields, muc_registered)}]), mnesia:del_table_index(muc_registered, nick), mnesia:transform_table(muc_registered, ignore, Fields), F1 = fun() -> mnesia:write_lock_table(mod_muc_tmp_table), mnesia:foldl( fun(#muc_registered{us_host = US} = R, _) -> mnesia:dirty_write( mod_muc_tmp_table, R#muc_registered{us_host = {US, Host}}) end, ok, muc_registered) end, mnesia:transaction(F1), mnesia:clear_table(muc_registered), F2 = fun() -> mnesia:write_lock_table(muc_registered), mnesia:foldl( fun(R, _) -> mnesia:dirty_write(R) end, ok, mod_muc_tmp_table) end, mnesia:transaction(F2), mnesia:delete_table(mod_muc_tmp_table); _ -> ?INFO_MSG("Recreating muc_registered table", []), mnesia:transform_table(muc_registered, ignore, Fields) end.