%%%---------------------------------------------------------------------- %%% File : mod_muc.erl %%% Author : Alexey Shchepin %%% Purpose : MUC support (XEP-0045) %%% Created : 19 Mar 2003 by Alexey Shchepin %%% %%% %%% ejabberd, Copyright (C) 2002-2012 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, export/1, room_destroyed/4, store_room/4, restore_room/3, forget_room/3, create_room/5, process_iq_disco_items/4, broadcast_service_message/2, register_room/3, node_up/1, node_down/1, migrate/3, get_vh_rooms/1, is_broadcasted/1, moderate_room_history/2, persist_recent_messages/1, can_use_nick/4]). %% gen_server callbacks -export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3]). -include("ejabberd.hrl"). -include("jlib.hrl"). -record(muc_room, {name_host = {<<"">>, <<"">>} :: {binary(), binary()} | {'_', binary()}, opts = [] :: list() | '_'}). -record(muc_online_room, {name_host = {<<"">>, <<"">>} :: {binary(), binary()} | '$1', pid = self() :: pid() | '$2' | '_'}). -record(muc_registered, {us_host = {{<<"">>, <<"">>}, <<"">>} :: {{binary(), binary()}, binary()} | '$1', nick = <<"">> :: binary()}). -record(state, {host = <<"">> :: binary(), server_host = <<"">> :: binary(), access = {none, none, none, none} :: {atom(), atom(), atom(), atom()}, history_size = 20 :: non_neg_integer(), persist_history = false :: boolean(), default_room_opts = [] :: list(), room_shaper = none :: shaper:shaper()}). -define(PROCNAME, ejabberd_mod_muc). 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) -> Rooms = shutdown_rooms(Host), stop_supervisor(Host), Proc = gen_mod:get_module_proc(Host, ?PROCNAME), gen_server:call(Proc, stop), supervisor:delete_child(ejabberd_sup, Proc), {wait, Rooms}. shutdown_rooms(Host) -> MyHost = gen_mod:get_module_opt_host(Host, mod_muc, <<"conference.@HOST@">>), Rooms = mnesia:dirty_select(muc_online_room, [{#muc_online_room{name_host = '$1', pid = '$2'}, [{'==', {element, 2, '$1'}, MyHost}], ['$2']}]), [Pid ! shutdown || Pid <- Rooms], Rooms. persist_recent_messages(Host) -> MyHost = gen_mod:get_module_opt_host(Host, mod_muc, <<"conference.@HOST@">>), Rooms = mnesia:dirty_select(muc_online_room, [{#muc_online_room{name_host = '$1', pid = '$2'}, [{'==', {element, 2, '$1'}, MyHost}], ['$2']}]), lists:foldl(fun (Pid, {NRooms, Messages}) -> case mod_muc_room:persist_recent_messages(Pid) of {ok, {persisted, N}} -> {NRooms + 1, Messages + N}; {ok, not_persistent} -> {NRooms, Messages} end end, {0, 0}, Rooms). moderate_room_history(RoomStr, Nick) -> Room = jlib:string_to_jid(RoomStr), Name = Room#jid.luser, Host = Room#jid.lserver, case mnesia:dirty_read(muc_online_room, {Name, Host}) of [] -> {error, not_found}; [R] -> Pid = R#muc_online_room.pid, mod_muc_room:moderate_room_history(Pid, Nick) end. room_destroyed(Host, Room, Pid, ServerHost) -> catch gen_mod:get_module_proc(ServerHost, ?PROCNAME) ! {room_destroyed, {Room, Host}, Pid}, ok. create_room(Host, Name, From, Nick, Opts) -> Proc = gen_mod:get_module_proc(Host, ?PROCNAME), RoomHost = gen_mod:get_module_opt_host(Host, ?MODULE, <<"conference.@HOST@">>), Node = get_node({Name, RoomHost}), gen_server:call({Proc, Node}, {create, Name, From, Nick, Opts}). store_room(ServerHost, Host, Name, Opts) -> LServer = jlib:nameprep(ServerHost), store_room(LServer, Host, Name, Opts, gen_mod:db_type(LServer, ?MODULE)). store_room(_LServer, Host, Name, Opts, mnesia) -> F = fun () -> mnesia:write(#muc_room{name_host = {Name, Host}, opts = Opts}) end, mnesia:transaction(F); store_room(LServer, Host, Name, Opts, odbc) -> SName = ejabberd_odbc:escape(Name), SHost = ejabberd_odbc:escape(Host), SOpts = ejabberd_odbc:encode_term(Opts), F = fun () -> odbc_queries:update_t(<<"muc_room">>, [<<"name">>, <<"host">>, <<"opts">>], [SName, SHost, SOpts], [<<"name='">>, SName, <<"' and host='">>, SHost, <<"'">>]) end, ejabberd_odbc:sql_transaction(LServer, F). restore_room(ServerHost, Host, Name) -> LServer = jlib:nameprep(ServerHost), restore_room(LServer, Host, Name, gen_mod:db_type(LServer, ?MODULE)). restore_room(_LServer, Host, Name, mnesia) -> case catch mnesia:dirty_read(muc_room, {Name, Host}) of [#muc_room{opts = Opts}] -> Opts; _ -> error end; restore_room(LServer, Host, Name, odbc) -> SName = ejabberd_odbc:escape(Name), SHost = ejabberd_odbc:escape(Host), case catch ejabberd_odbc:sql_query(LServer, [<<"select opts from muc_room where name='">>, SName, <<"' and host='">>, SHost, <<"';">>]) of {selected, [<<"opts">>], [[Opts]]} -> opts_to_binary(ejabberd_odbc:decode_term(Opts)); _ -> error end. forget_room(ServerHost, Host, Name) -> LServer = jlib:nameprep(ServerHost), forget_room(LServer, Host, Name, gen_mod:db_type(LServer, ?MODULE)). forget_room(_LServer, Host, Name, mnesia) -> F = fun () -> mnesia:delete({muc_room, {Name, Host}}) end, mnesia:transaction(F); forget_room(LServer, Host, Name, odbc) -> SName = ejabberd_odbc:escape(Name), SHost = ejabberd_odbc:escape(Host), F = fun () -> ejabberd_odbc:sql_query_t([<<"delete from muc_room where name='">>, SName, <<"' and host='">>, SHost, <<"';">>]) end, ejabberd_odbc:sql_transaction(LServer, F). process_iq_disco_items(Host, From, To, #iq{lang = Lang} = IQ) -> Rsm = jlib:rsm_decode(IQ), Res = IQ#iq{type = result, sub_el = [#xmlel{name = <<"query">>, attrs = [{<<"xmlns">>, ?NS_DISCO_ITEMS}], children = iq_disco_items(Host, From, Lang, Rsm)}]}, ejabberd_router:route(To, From, jlib:iq_to_xml(Res)). can_use_nick(_ServerHost, _Host, _JID, <<"">>) -> false; can_use_nick(ServerHost, Host, JID, Nick) -> LServer = jlib:nameprep(ServerHost), can_use_nick(LServer, Host, JID, Nick, gen_mod:db_type(LServer, ?MODULE)). can_use_nick(_LServer, Host, JID, Nick, mnesia) -> {LUser, LServer, _} = jlib:jid_tolower(JID), LUS = {LUser, LServer}, 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; can_use_nick(LServer, Host, JID, Nick, odbc) -> SJID = jlib:jid_to_string(jlib:jid_tolower(jlib:jid_remove_resource(JID))), SNick = ejabberd_odbc:escape(Nick), SHost = ejabberd_odbc:escape(Host), case catch ejabberd_odbc:sql_query(LServer, [<<"select jid from muc_registered ">>, <<"where nick='">>, SNick, <<"' and host='">>, SHost, <<"';">>]) of {selected, [<<"jid">>], [[SJID1]]} -> SJID == SJID1; _ -> true end. migrate(_Node, _UpOrDown, After) -> Rs = mnesia:dirty_select(muc_online_room, [{#muc_online_room{name_host = '$1', pid = '$2', _ = '_'}, [], ['$$']}]), lists:foreach(fun ([NameHost, Pid]) -> case get_node(NameHost) of Node when Node /= node() -> mod_muc_room:migrate(Pid, Node, random:uniform(After)); _ -> ok end end, Rs). node_up(_Node) -> copy_rooms(mnesia:dirty_first(muc_online_room)). node_down(Node) when Node == node() -> copy_rooms(mnesia:dirty_first(muc_online_room)); node_down(_) -> ok. copy_rooms('$end_of_table') -> ok; copy_rooms(Key) -> case mnesia:dirty_read(muc_online_room, Key) of [#muc_online_room{name_host = NameHost} = Room] -> case get_node_new(NameHost) of Node when node() /= Node -> rpc:cast(Node, mnesia, dirty_write, [Room]); _ -> ok end; _ -> ok end, copy_rooms(mnesia:dirty_next(muc_online_room, Key)). %%==================================================================== %% gen_server callbacks %%==================================================================== init([Host, Opts]) -> MyHost = gen_mod:get_opt_host(Host, Opts, <<"conference.@HOST@">>), case gen_mod:db_type(Opts) of mnesia -> 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)}]), update_tables(), mnesia:add_table_index(muc_registered, nick); _ -> ok end, mnesia:create_table(muc_online_room, [{ram_copies, [node()]}, {local_content, true}, {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}]), mnesia:subscribe(system), Access = gen_mod:get_opt(access, Opts, fun(A) when is_atom(A) -> A end, all), AccessCreate = gen_mod:get_opt(access_create, Opts, fun(A) when is_atom(A) -> A end, all), AccessAdmin = gen_mod:get_opt(access_admin, Opts, fun(A) when is_atom(A) -> A end, none), AccessPersistent = gen_mod:get_opt(access_persistent, Opts, fun(A) when is_atom(A) -> A end, all), HistorySize = gen_mod:get_opt(history_size, Opts, fun(I) when is_integer(I), I>=0 -> I end, 20), PersistHistory = gen_mod:get_opt(persist_history, Opts, fun(B) when is_boolean(B) -> B end, false), DefRoomOpts = gen_mod:get_opt(default_room_options, Opts, fun(L) when is_list(L) -> L end, []), RoomShaper = gen_mod:get_opt(room_shaper, Opts, fun(A) when is_atom(A) -> A end, none), ejabberd_router:register_route(MyHost), ejabberd_hooks:add(node_up, ?MODULE, node_up, 100), ejabberd_hooks:add(node_down, ?MODULE, node_down, 100), ejabberd_hooks:add(node_hash_update, ?MODULE, migrate, 100), load_permanent_rooms(MyHost, Host, {Access, AccessCreate, AccessAdmin, AccessPersistent}, HistorySize, PersistHistory, RoomShaper), {ok, #state{host = MyHost, server_host = Host, access = {Access, AccessCreate, AccessAdmin, AccessPersistent}, default_room_opts = DefRoomOpts, history_size = HistorySize, persist_history = PersistHistory, room_shaper = RoomShaper}}. 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, persist_history = PersistHistory, 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, PersistHistory, RoomShaper, From, Nick, NewOpts), register_room(Host, Room, Pid), {reply, ok, State}. handle_cast(_Msg, State) -> {noreply, State}. handle_info({route, From, To, Packet}, #state{host = Host, server_host = ServerHost, access = Access, default_room_opts = DefRoomOpts, history_size = HistorySize, persist_history = PersistHistory, room_shaper = RoomShaper} = State) -> {U, S, _} = jlib:jid_tolower(To), case get_node({U, S}) of Node when Node == node() -> case catch do_route(Host, ServerHost, Access, HistorySize, PersistHistory, RoomShaper, From, To, Packet, DefRoomOpts) of {'EXIT', Reason} -> ?ERROR_MSG("~p", [Reason]); _ -> ok end; Node -> Proc = gen_mod:get_module_proc(ServerHost, ?PROCNAME), {Proc, Node} ! {route, From, To, Packet} 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:async_dirty(F), case get_node_new(RoomHost) of Node when Node /= node() -> rpc:cast(Node, mnesia, dirty_delete_object, [#muc_online_room{name_host = RoomHost, pid = Pid}]); _ -> ok end, {noreply, State}; handle_info(_Info, State) -> {noreply, State}. terminate(_Reason, State) -> ejabberd_hooks:delete(node_up, ?MODULE, node_up, 100), ejabberd_hooks:delete(node_down, ?MODULE, node_down, 100), ejabberd_hooks:delete(node_hash_update, ?MODULE, migrate, 100), ejabberd_router:unregister_route(State#state.host), ok. code_change(_OldVsn, State, _Extra) -> {ok, State}. 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, PersistHistory, 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, PersistHistory, RoomShaper, From, To, Packet, DefRoomOpts); _ -> #xmlel{attrs = Attrs} = Packet, Lang = xml:get_attr_s(<<"xml:lang">>, Attrs), ErrText = <<"Access denied by service policy">>, Err = jlib:make_error_reply(Packet, ?ERRT_FORBIDDEN(Lang, ErrText)), ejabberd_router:route_error(To, From, Err, Packet) end. do_route1(Host, ServerHost, Access, HistorySize, PersistHistory, RoomShaper, From, To, Packet, DefRoomOpts) -> {_AccessRoute, AccessCreate, AccessAdmin, _AccessPersistent} = Access, {Room, _, Nick} = jlib:jid_tolower(To), #xmlel{name = Name, attrs = Attrs} = Packet, case Room of <<"">> -> case Nick of <<"">> -> case Name of <<"iq">> -> case jlib:iq_query_info(Packet) of #iq{type = get, xmlns = (?NS_DISCO_INFO) = XMLNS, sub_el = _SubEl, lang = Lang} = IQ -> Info = ejabberd_hooks:run_fold(disco_info, ServerHost, [], [ServerHost, ?MODULE, <<"">>, <<"">>]), Res = IQ#iq{type = result, sub_el = [#xmlel{name = <<"query">>, attrs = [{<<"xmlns">>, XMLNS}], children = iq_disco_info(Lang) ++ Info}]}, ejabberd_router:route(To, From, jlib:iq_to_xml(Res)); #iq{type = get, xmlns = ?NS_DISCO_ITEMS} = IQ -> spawn(?MODULE, process_iq_disco_items, [Host, From, To, IQ]); #iq{type = get, xmlns = (?NS_REGISTER) = XMLNS, lang = Lang, sub_el = _SubEl} = IQ -> Res = IQ#iq{type = result, sub_el = [#xmlel{name = <<"query">>, attrs = [{<<"xmlns">>, XMLNS}], children = iq_get_register_info(ServerHost, Host, From, Lang)}]}, ejabberd_router:route(To, From, jlib:iq_to_xml(Res)); #iq{type = set, xmlns = (?NS_REGISTER) = XMLNS, lang = Lang, sub_el = SubEl} = IQ -> case process_iq_register_set(ServerHost, Host, From, SubEl, Lang) of {result, IQRes} -> Res = IQ#iq{type = result, sub_el = [#xmlel{name = <<"query">>, attrs = [{<<"xmlns">>, XMLNS}], children = IQRes}]}, ejabberd_router:route(To, From, jlib:iq_to_xml(Res)); {error, Error} -> Err = jlib:make_error_reply(Packet, Error), ejabberd_router:route(To, From, Err) end; #iq{type = get, xmlns = (?NS_VCARD) = XMLNS, lang = Lang, sub_el = _SubEl} = IQ -> Res = IQ#iq{type = result, sub_el = [#xmlel{name = <<"vCard">>, attrs = [{<<"xmlns">>, XMLNS}], children = iq_get_vcard(Lang)}]}, ejabberd_router:route(To, From, jlib:iq_to_xml(Res)); #iq{type = get, xmlns = ?NS_MUC_UNIQUE} = IQ -> Res = IQ#iq{type = result, sub_el = [#xmlel{name = <<"unique">>, attrs = [{<<"xmlns">>, ?NS_MUC_UNIQUE}], children = [iq_get_unique(From)]}]}, ejabberd_router:route(To, From, jlib:iq_to_xml(Res)); #iq{} -> Err = jlib:make_error_reply(Packet, ?ERR_FEATURE_NOT_IMPLEMENTED), ejabberd_router:route(To, From, Err); _ -> ok end; <<"message">> -> case xml:get_attr_s(<<"type">>, Attrs) of <<"error">> -> ok; _ -> case acl:match_rule(ServerHost, AccessAdmin, From) of allow -> Msg = xml:get_path_s(Packet, [{elem, <<"body">>}, cdata]), broadcast_service_message(Host, Msg); _ -> Lang = xml:get_attr_s(<<"xml:lang">>, Attrs), ErrText = <<"Only service administrators are allowed " "to send service messages">>, Err = jlib:make_error_reply(Packet, ?ERRT_FORBIDDEN(Lang, ErrText)), ejabberd_router:route(To, From, Err) end end; <<"presence">> -> ok end; _ -> case xml:get_attr_s(<<"type">>, Attrs) of <<"error">> -> ok; <<"result">> -> ok; _ -> Err = jlib:make_error_reply(Packet, ?ERR_ITEM_NOT_FOUND), ejabberd_router:route(To, From, Err) end end; _ -> case mnesia:dirty_read(muc_online_room, {Room, Host}) of [] -> Type = xml:get_attr_s(<<"type">>, Attrs), case {Name, Type} of {<<"presence">>, <<"">>} -> case check_user_can_create_room(ServerHost, AccessCreate, From, Room) of true -> case start_new_room(Host, ServerHost, Access, Room, HistorySize, PersistHistory, RoomShaper, From, Nick, DefRoomOpts) of {ok, Pid} -> mod_muc_room:route(Pid, From, Nick, Packet), register_room(Host, Room, Pid), ok; _Err -> Err = jlib:make_error_reply(Packet, ?ERR_INTERNAL_SERVER_ERROR), ejabberd_router:route(To, From, Err) end; false -> Lang = xml:get_attr_s(<<"xml:lang">>, Attrs), ErrText = <<"Room creation is denied by service policy">>, Err = jlib:make_error_reply(Packet, ?ERRT_FORBIDDEN(Lang, ErrText)), ejabberd_router:route(To, From, Err) end; _ -> Lang = xml:get_attr_s(<<"xml:lang">>, Attrs), ErrText = <<"Conference room does not exist">>, Err = jlib:make_error_reply(Packet, ?ERRT_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 -> byte_size(RoomID) =< gen_mod:get_module_opt(ServerHost, ?MODULE, max_room_id, fun(infinity) -> infinity; (I) when is_integer(I), I>0 -> I end, infinity); _ -> false end. get_rooms(ServerHost, Host) -> LServer = jlib:nameprep(ServerHost), get_rooms(LServer, Host, gen_mod:db_type(LServer, ?MODULE)). get_rooms(_LServer, Host, mnesia) -> case catch mnesia:dirty_select(muc_room, [{#muc_room{name_host = {'_', Host}, _ = '_'}, [], ['$_']}]) of {'EXIT', Reason} -> ?ERROR_MSG("~p", [Reason]), []; Rs -> Rs end; get_rooms(LServer, Host, odbc) -> SHost = ejabberd_odbc:escape(Host), case catch ejabberd_odbc:sql_query(LServer, [<<"select name, opts from muc_room ">>, <<"where host='">>, SHost, <<"';">>]) of {'EXIT', Reason} -> ?ERROR_MSG("~p", [Reason]), []; {selected, [<<"name">>, <<"opts">>], RoomOpts} -> lists:map(fun ([Room, Opts]) -> #muc_room{name_host = {Room, Host}, opts = opts_to_binary( ejabberd_odbc:decode_term(Opts))} end, RoomOpts) end. load_permanent_rooms(Host, ServerHost, Access, HistorySize, PersistHistory, RoomShaper) -> lists:foreach(fun (R) -> {Room, Host} = R#muc_room.name_host, case get_node({Room, Host}) of Node when Node == node() -> case mnesia:dirty_read(muc_online_room, {Room, Host}) of [] -> case get_room_state_if_broadcasted({Room, Host}) of {ok, RoomState} -> mod_muc_room:start(normal_state, RoomState); error -> {ok, Pid} = mod_muc_room:start(Host, ServerHost, Access, Room, HistorySize, PersistHistory, RoomShaper, R#muc_room.opts), register_room(Host, Room, Pid); _ -> ok end; _ -> ok end; _ -> ok end end, get_rooms(ServerHost, Host)). start_new_room(Host, ServerHost, Access, Room, HistorySize, PersistHistory, RoomShaper, From, Nick, DefRoomOpts) -> case get_room_state_if_broadcasted({Room, Host}) of {ok, RoomState} -> ?DEBUG("MUC: restore room '~s' from other node~n", [Room]), mod_muc_room:start(normal_state, RoomState); error -> case restore_room(ServerHost, Room, Host) of error -> ?DEBUG("MUC: open new room '~s'~n", [Room]), mod_muc_room:start(Host, ServerHost, Access, Room, HistorySize, PersistHistory, RoomShaper, From, Nick, DefRoomOpts); Opts -> ?DEBUG("MUC: restore room '~s'~n", [Room]), mod_muc_room:start(Host, ServerHost, Access, Room, HistorySize, PersistHistory, RoomShaper, Opts) end end. register_room(Host, Room, Pid) -> F = fun () -> mnesia:write(#muc_online_room{name_host = {Room, Host}, pid = Pid}) end, mnesia:async_dirty(F), case get_node_new({Room, Host}) of Node when Node /= node() -> rpc:cast(Node, mnesia, dirty_write, [#muc_online_room{name_host = {Room, Host}, pid = Pid}]), case get_node({Room, Host}) of Node when node() /= Node -> mod_muc_room:migrate(Pid, Node, 0); _ -> ok end; _ -> ok end. iq_disco_info(Lang) -> [#xmlel{name = <<"identity">>, attrs = [{<<"category">>, <<"conference">>}, {<<"type">>, <<"text">>}, {<<"name">>, translate:translate(Lang, <<"Chatrooms">>)}], children = []}, #xmlel{name = <<"feature">>, attrs = [{<<"var">>, ?NS_DISCO_INFO}], children = []}, #xmlel{name = <<"feature">>, attrs = [{<<"var">>, ?NS_DISCO_ITEMS}], children = []}, #xmlel{name = <<"feature">>, attrs = [{<<"var">>, ?NS_MUC}], children = []}, #xmlel{name = <<"feature">>, attrs = [{<<"var">>, ?NS_MUC_UNIQUE}], children = []}, #xmlel{name = <<"feature">>, attrs = [{<<"var">>, ?NS_REGISTER}], children = []}, #xmlel{name = <<"feature">>, attrs = [{<<"var">>, ?NS_RSM}], children = []}, #xmlel{name = <<"feature">>, attrs = [{<<"var">>, ?NS_VCARD}], children = []}]. iq_disco_items(Host, From, Lang, none) -> 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 = [{<<"jid">>, jlib:jid_to_string({Name, Host, <<"">>})}, {<<"name">>, Desc}], children = []}}; _ -> false end end, get_vh_rooms_all_nodes(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, #xmlel{name = <<"item">>, attrs = [{<<"jid">>, jlib:jid_to_string({Name, Host, <<"">>})}, {<<"name">>, Desc}], children = []}}; _ -> false end end, Rooms) ++ RsmOut. get_vh_rooms(Host, #rsm_in{max = M, direction = Direction, id = I, index = Index}) -> AllRooms = get_vh_rooms_all_nodes(Host), Count = erlang:length(AllRooms), L = get_vh_rooms_direction(Direction, I, Index, AllRooms), 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. get_vh_rooms_direction(_Direction, _I, Index, AllRooms) when Index =/= undefined -> AllRooms; get_vh_rooms_direction(aft, I, _Index, AllRooms) -> {_Before, After} = lists:splitwith(fun (#muc_online_room{name_host = {Na, _}}) -> Na < I end, AllRooms), case After of [] -> []; [#muc_online_room{name_host = {I, _Host}} | AfterTail] -> AfterTail; _ -> After end; get_vh_rooms_direction(before, I, _Index, AllRooms) when I =/= [] -> {Before, _} = lists:splitwith(fun (#muc_online_room{name_host = {Na, _}}) -> Na < I end, AllRooms), Before; get_vh_rooms_direction(_Direction, _I, _Index, AllRooms) -> AllRooms. 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 = [{<<"type">>, Type}, {<<"label">>, translate:translate(Lang, Label)}, {<<"var">>, Var}], children = [#xmlel{name = <<"value">>, attrs = [], children = [{xmlcdata, Val}]}]}). iq_get_unique(From) -> {xmlcdata, sha:sha(term_to_binary([From, now(), randoms:get_string()]))}. get_nick(ServerHost, Host, From) -> LServer = jlib:nameprep(ServerHost), get_nick(LServer, Host, From, gen_mod:db_type(LServer, ?MODULE)). get_nick(_LServer, Host, From, mnesia) -> {LUser, LServer, _} = jlib:jid_tolower(From), LUS = {LUser, LServer}, case catch mnesia:dirty_read(muc_registered, {LUS, Host}) of {'EXIT', _Reason} -> error; [] -> error; [#muc_registered{nick = Nick}] -> Nick end; get_nick(LServer, Host, From, odbc) -> SJID = ejabberd_odbc:escape(jlib:jid_to_string(jlib:jid_tolower(jlib:jid_remove_resource(From)))), SHost = ejabberd_odbc:escape(Host), case catch ejabberd_odbc:sql_query(LServer, [<<"select nick from muc_registered where " "jid='">>, SJID, <<"' and host='">>, SHost, <<"';">>]) of {selected, [<<"nick">>], [[Nick]]} -> Nick; _ -> error end. iq_get_register_info(ServerHost, Host, From, Lang) -> {Nick, Registered} = case get_nick(ServerHost, Host, From) of error -> {<<"">>, []}; N -> {N, [#xmlel{name = <<"registered">>, attrs = [], children = []}]} end, Registered ++ [#xmlel{name = <<"instructions">>, attrs = [], children = [{xmlcdata, translate:translate(Lang, <<"You need a client that supports x:data " "to register the nickname">>)}]}, #xmlel{name = <<"x">>, attrs = [{<<"xmlns">>, ?NS_XDATA}], children = [#xmlel{name = <<"title">>, attrs = [], children = [{xmlcdata, <<(translate:translate(Lang, <<"Nickname Registration at ">>))/binary, Host/binary>>}]}, #xmlel{name = <<"instructions">>, attrs = [], children = [{xmlcdata, translate:translate(Lang, <<"Enter nickname you want to register">>)}]}, ?XFIELD(<<"text-single">>, <<"Nickname">>, <<"nick">>, Nick)]}]. set_nick(ServerHost, Host, From, Nick) -> LServer = jlib:nameprep(ServerHost), set_nick(LServer, Host, From, Nick, gen_mod:db_type(LServer, ?MODULE)). set_nick(_LServer, Host, From, Nick, mnesia) -> {LUser, LServer, _} = jlib:jid_tolower(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, mnesia:transaction(F); set_nick(LServer, Host, From, Nick, odbc) -> JID = jlib:jid_to_string(jlib:jid_tolower(jlib:jid_remove_resource(From))), SJID = ejabberd_odbc:escape(JID), SNick = ejabberd_odbc:escape(Nick), SHost = ejabberd_odbc:escape(Host), F = fun () -> case Nick of <<"">> -> ejabberd_odbc:sql_query_t([<<"delete from muc_registered where ">>, <<"jid='">>, SJID, <<"' and host='">>, Host, <<"';">>]), ok; _ -> Allow = case ejabberd_odbc:sql_query_t([<<"select jid from muc_registered ">>, <<"where nick='">>, SNick, <<"' and host='">>, SHost, <<"';">>]) of {selected, [<<"jid">>], [[J]]} -> J == JID; _ -> true end, if Allow -> odbc_queries:update_t(<<"muc_registered">>, [<<"jid">>, <<"host">>, <<"nick">>], [SJID, SHost, SNick], [<<"jid='">>, SJID, <<"' and host='">>, SHost, <<"'">>]), ok; true -> false end end end, ejabberd_odbc:sql_transaction(LServer, F). iq_set_register_info(ServerHost, Host, From, Nick, Lang) -> case set_nick(ServerHost, Host, From, Nick) of {atomic, ok} -> {result, []}; {atomic, false} -> ErrText = <<"That nickname is registered by another " "person">>, {error, ?ERRT_CONFLICT(Lang, ErrText)}; _ -> {error, ?ERR_INTERNAL_SERVER_ERROR} end. process_iq_register_set(ServerHost, Host, From, SubEl, Lang) -> #xmlel{children = Els} = SubEl, case xml:get_subtag(SubEl, <<"remove">>) of false -> case xml:remove_cdata(Els) of [#xmlel{name = <<"x">>} = XEl] -> case {xml:get_tag_attr_s(<<"xmlns">>, XEl), xml:get_tag_attr_s(<<"type">>, XEl)} of {?NS_XDATA, <<"cancel">>} -> {result, []}; {?NS_XDATA, <<"submit">>} -> XData = jlib:parse_xdata_submit(XEl), case XData of invalid -> {error, ?ERR_BAD_REQUEST}; _ -> case lists:keysearch(<<"nick">>, 1, XData) of {value, {_, [Nick]}} when Nick /= <<"">> -> iq_set_register_info(ServerHost, Host, From, Nick, Lang); _ -> ErrText = <<"You must fill in field \"Nickname\" " "in the form">>, {error, ?ERRT_NOT_ACCEPTABLE(Lang, ErrText)} end end; _ -> {error, ?ERR_BAD_REQUEST} end; _ -> {error, ?ERR_BAD_REQUEST} end; _ -> iq_set_register_info(ServerHost, Host, From, <<"">>, Lang) end. iq_get_vcard(Lang) -> [#xmlel{name = <<"FN">>, attrs = [], children = [{xmlcdata, <<"ejabberd/mod_muc">>}]}, #xmlel{name = <<"URL">>, attrs = [], children = [{xmlcdata, ?EJABBERD_URI}]}, #xmlel{name = <<"DESC">>, attrs = [], children = [{xmlcdata, <<(translate:translate(Lang, <<"ejabberd MUC module">>))/binary, "\nCopyright (c) 2003-2012 ProcessOne">>}]}]. 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_all_nodes(Host)). get_vh_rooms_all_nodes(Host) -> Rooms = lists:foldl(fun (Node, Acc) when Node == node() -> get_vh_rooms(Host) ++ Acc; (Node, Acc) -> case catch rpc:call(Node, ?MODULE, get_vh_rooms, [Host], 5000) of Res when is_list(Res) -> Res ++ Acc; _ -> Acc end end, [], get_nodes(Host)), lists:ukeysort(#muc_online_room.name_host, Rooms). get_vh_rooms(Host) -> mnesia:dirty_select(muc_online_room, [{#muc_online_room{name_host = '$1', _ = '_'}, [{'==', {element, 2, '$1'}, Host}], ['$_']}]). opts_to_binary(Opts) -> lists:map( fun({title, Title}) -> {title, iolist_to_binary(Title)}; ({description, Desc}) -> {description, iolist_to_binary(Desc)}; ({password, Pass}) -> {password, iolist_to_binary(Pass)}; ({subject, Subj}) -> {subject, iolist_to_binary(Subj)}; ({subject_author, Author}) -> {subject_author, iolist_to_binary(Author)}; ({affiliations, Affs}) -> {affiliations, lists:map( fun({{U, S, R}, Aff}) -> NewAff = case Aff of {A, Reason} -> {A, iolist_to_binary(Reason)}; _ -> Aff end, {{iolist_to_binary(U), iolist_to_binary(S), iolist_to_binary(R)}, NewAff} end, Affs)}; ({captcha_whitelist, CWList}) -> {captcha_whitelist, lists:map( fun({U, S, R}) -> {iolist_to_binary(U), iolist_to_binary(S), iolist_to_binary(R)} end, CWList)}; (Opt) -> Opt end, Opts). update_tables() -> update_muc_online_table(), update_muc_room_table(), update_muc_registered_table(). update_muc_online_table() -> case catch mnesia:table_info(muc_online_room, local_content) of false -> mnesia:delete_table(muc_online_room); _ -> ok end. update_muc_room_table() -> Fields = record_info(fields, muc_room), case mnesia:table_info(muc_room, attributes) of Fields -> ejabberd_config:convert_table_to_binary( muc_room, Fields, set, fun(#muc_room{name_host = {N, _}}) -> N end, fun(#muc_room{name_host = {N, H}, opts = Opts} = R) -> R#muc_room{name_host = {iolist_to_binary(N), iolist_to_binary(H)}, opts = opts_to_binary(Opts)} end); _ -> ?INFO_MSG("Recreating muc_room table", []), mnesia:transform_table(muc_room, ignore, Fields) end. update_muc_registered_table() -> Fields = record_info(fields, muc_registered), case mnesia:table_info(muc_registered, attributes) of Fields -> ejabberd_config:convert_table_to_binary( muc_registered, Fields, set, fun(#muc_registered{us_host = {_, H}}) -> H end, fun(#muc_registered{us_host = {{U, S}, H}, nick = Nick} = R) -> R#muc_registered{us_host = {{iolist_to_binary(U), iolist_to_binary(S)}, iolist_to_binary(H)}, nick = iolist_to_binary(Nick)} end); _ -> ?INFO_MSG("Recreating muc_registered table", []), mnesia:transform_table(muc_registered, ignore, Fields) end. is_broadcasted(RoomHost) -> case ejabberd_router:get_domain_balancing(RoomHost) of broadcast -> true; _ -> false end. get_node({_, RoomHost} = Key) -> case is_broadcasted(RoomHost) of true -> node(); false -> ejabberd_cluster:get_node(Key) end; get_node(RoomHost) -> get_node({<<"">>, RoomHost}). get_node_new({_, RoomHost} = Key) -> case is_broadcasted(RoomHost) of true -> node(); false -> ejabberd_cluster:get_node_new(Key) end; get_node_new(RoomHost) -> get_node_new({<<"">>, RoomHost}). get_nodes(RoomHost) -> case is_broadcasted(RoomHost) of true -> [node()]; false -> ejabberd_cluster:get_nodes() end. get_room_state_if_broadcasted({Room, Host}) -> case is_broadcasted(Host) of true -> lists:foldl(fun (_, {ok, StateData}) -> {ok, StateData}; (Node, _) when Node /= node() -> case catch rpc:call(Node, mnesia, dirty_read, [muc_online_room, {Room, Host}], 5000) of [#muc_online_room{pid = Pid}] -> case catch gen_fsm:sync_send_all_state_event(Pid, get_state, 5000) of {ok, StateData} -> {ok, StateData}; _ -> error end; _ -> error end; (_, Acc) -> Acc end, error, ejabberd_cluster:get_nodes()); false -> error end. export(_Server) -> [{muc_room, fun(Host, #muc_room{name_host = {Name, RoomHost}, opts = Opts}) -> case str:suffix(Host, RoomHost) of true -> SName = ejabberd_odbc:escape(Name), SRoomHost = ejabberd_odbc:escape(RoomHost), SOpts = ejabberd_odbc:encode_term(Opts), [[<<"delete from muc_room where name='">>, SName, <<"' and host='">>, SRoomHost, <<"';">>], [<<"insert into muc_room(name, host, opts) ", "values (">>, <<"'">>, SName, <<"', '">>, SRoomHost, <<"', '">>, SOpts, <<"');">>]]; false -> [] end end}, {muc_registered, fun(Host, #muc_registered{us_host = {{U, S}, RoomHost}, nick = Nick}) -> case str:suffix(Host, RoomHost) of true -> SJID = ejabberd_odbc:escape( jlib:jid_to_string( jlib:make_jid(U, S, <<"">>))), SNick = ejabberd_odbc:escape(Nick), SRoomHost = ejabberd_odbc:escape(RoomHost), [[<<"delete from muc_registered where jid='">>, SJID, <<"' and host='">>, SRoomHost, <<"';">>], [<<"insert into muc_registered(jid, host, " "nick) values ('">>, SJID, <<"', '">>, SRoomHost, <<"', '">>, SNick, <<"');">>]]; false -> [] end end}].