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%% @doc Stores a table of custom IQ-handlers for mod_muc_room. |
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-module(mod_muc_iq). |
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-behaviour(gen_iq_component). |
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-export([start_link/0, |
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process_iq/5, |
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register_iq_handler/3, |
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unregister_iq_handler/2, |
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sync/0]). |
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%% gen_server callbacks |
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-export([init/1, handle_call/3, handle_cast/2, handle_info/2, |
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terminate/2, code_change/3]). |
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-ignore_xref([code_change/3, handle_call/3, handle_cast/2, handle_info/2, init/1, |
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start_link/0, terminate/2]). |
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-compile({inline, [srv_name/0, tbl_name/0]}). |
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-include("mongoose.hrl"). |
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-include("jlib.hrl"). |
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-record(state, {}). |
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%% @private |
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srv_name() -> |
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ejabberd_mod_muc_iq. |
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tbl_name() -> |
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ejabberd_mod_muc_iq_table. |
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%%==================================================================== |
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%% API |
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%%==================================================================== |
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-spec start_link() -> 'ignore' | {'error', _} | {'ok', pid()}. |
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start_link() -> |
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gen_server:start_link({local, srv_name()}, ?MODULE, [], []). |
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%% @doc Handle custom IQ. |
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%% Called from mod_muc_room. |
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-spec process_iq(jid:lserver(), jid:jid(), jid:jid(), mongoose_acc:t(), |
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jlib:iq()) -> mongoose_acc:t() | {mongoose_acc:t(), error}. |
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process_iq(MucHost, From, RoomJID, Acc, IQ = #iq{xmlns = XMLNS}) -> |
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case ets:lookup(tbl_name(), {XMLNS, MucHost}) of |
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[{_, IQHandler}] -> |
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gen_iq_component:handle(IQHandler, Acc, From, RoomJID, IQ); |
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:-( |
[] -> {Acc, error} |
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end. |
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-spec register_iq_handler(jid:lserver(), binary(), mongoose_iq_handler:t()) -> ok. |
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register_iq_handler(MucHost, XMLNS, IQHandler) -> |
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gen_server:cast(srv_name(), |
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{register_iq_handler, MucHost, XMLNS, IQHandler}). |
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-spec unregister_iq_handler(jid:lserver(), binary()) -> ok. |
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unregister_iq_handler(MucHost, XMLNS) -> |
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gen_server:cast(srv_name(), |
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{unregister_iq_handler, MucHost, XMLNS}). |
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-spec sync() -> ok. |
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sync() -> |
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gen_server:call(srv_name(), sync). |
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%%==================================================================== |
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%% gen_server callbacks |
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%%==================================================================== |
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init([]) -> |
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ets:new(tbl_name(), [named_table, protected]), |
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{ok, #state{}}. |
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handle_call(sync, _From, State) -> |
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{reply, ok, State}; |
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handle_call(_Request, _From, State) -> |
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:-( |
{reply, ok, State}. |
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handle_cast({register_iq_handler, MucHost, XMLNS, IQHandler}, State) -> |
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ets:insert(tbl_name(), {{XMLNS, MucHost}, IQHandler}), |
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{noreply, State}; |
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handle_cast({unregister_iq_handler, MucHost, XMLNS}, State) -> |
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case ets:lookup(tbl_name(), {XMLNS, MucHost}) of |
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[{_, IQHandler}] -> |
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gen_iq_component:stop_iq_handler(IQHandler), |
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ets:delete(tbl_name(), {XMLNS, MucHost}); |
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_ -> |
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:-( |
ok |
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end, |
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{noreply, State}; |
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handle_cast(_Msg, State) -> |
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:-( |
{noreply, State}. |
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handle_info(_Msg, State) -> |
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:-( |
{noreply, State}. |
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terminate(_Reason, _State) -> |
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:-( |
ok. |
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code_change(_OldVsn, State, _Extra) -> |
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:-( |
{ok, State}. |