mirror of
https://github.com/processone/ejabberd.git
synced 2024-11-06 15:37:52 +01:00
138 lines
4.5 KiB
Erlang
138 lines
4.5 KiB
Erlang
%%%----------------------------------------------------------------------
|
|
%%% File : mod_echo.erl
|
|
%%% Author : Alexey Shchepin <alexey@process-one.net>
|
|
%%% Purpose : Simple ejabberd module.
|
|
%%% Created : 15 Jan 2003 by Alexey Shchepin <alexey@process-one.net>
|
|
%%%
|
|
%%%
|
|
%%% 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_echo).
|
|
|
|
-author('alexey@process-one.net').
|
|
|
|
-behaviour(gen_server).
|
|
|
|
-behaviour(gen_mod).
|
|
|
|
%% API
|
|
-export([start_link/2, start/2, stop/1,
|
|
do_client_version/3]).
|
|
|
|
%% 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(state, {host = <<"">> :: binary()}).
|
|
|
|
-define(PROCNAME, ejabberd_mod_echo).
|
|
|
|
start_link(Host, Opts) ->
|
|
Proc = gen_mod:get_module_proc(Host, ?PROCNAME),
|
|
gen_server:start_link({local, Proc}, ?MODULE,
|
|
[Host, Opts], []).
|
|
|
|
start(Host, Opts) ->
|
|
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) ->
|
|
Proc = gen_mod:get_module_proc(Host, ?PROCNAME),
|
|
gen_server:call(Proc, stop),
|
|
supervisor:terminate_child(ejabberd_sup, Proc),
|
|
supervisor:delete_child(ejabberd_sup, Proc).
|
|
|
|
%%====================================================================
|
|
%% gen_server callbacks
|
|
%%====================================================================
|
|
|
|
init([Host, Opts]) ->
|
|
MyHost = gen_mod:get_opt_host(Host, Opts,
|
|
<<"echo.@HOST@">>),
|
|
ejabberd_router:register_route(MyHost),
|
|
{ok, #state{host = MyHost}}.
|
|
|
|
handle_call(stop, _From, State) ->
|
|
{stop, normal, ok, State}.
|
|
|
|
handle_cast(_Msg, State) -> {noreply, State}.
|
|
|
|
handle_info({route, From, To, Packet}, State) ->
|
|
Packet2 = case From#jid.user of
|
|
<<"">> ->
|
|
jlib:make_error_reply(Packet, ?ERR_BAD_REQUEST);
|
|
_ -> Packet
|
|
end,
|
|
do_client_version(disabled, To, From),
|
|
ejabberd_router:route(To, From, Packet2),
|
|
{noreply, State};
|
|
handle_info(_Info, State) -> {noreply, State}.
|
|
|
|
terminate(_Reason, State) ->
|
|
ejabberd_router:unregister_route(State#state.host), ok.
|
|
|
|
code_change(_OldVsn, State, _Extra) -> {ok, State}.
|
|
|
|
%%--------------------------------------------------------------------
|
|
%% Example of routing XMPP packets using Erlang's message passing
|
|
%%--------------------------------------------------------------------
|
|
|
|
%% To enable this educational example, edit the function handle_info:
|
|
%% replace the argument 'disabled' with 'enabled' in the call to the
|
|
%% function do_client_version.
|
|
|
|
do_client_version(disabled, _From, _To) -> ok;
|
|
do_client_version(enabled, From, To) ->
|
|
ToS = jlib:jid_to_string(To),
|
|
Random_resource =
|
|
iolist_to_binary(integer_to_list(random:uniform(100000))),
|
|
From2 = From#jid{resource = Random_resource,
|
|
lresource = Random_resource},
|
|
Packet = #xmlel{name = <<"iq">>,
|
|
attrs = [{<<"to">>, ToS}, {<<"type">>, <<"get">>}],
|
|
children =
|
|
[#xmlel{name = <<"query">>,
|
|
attrs = [{<<"xmlns">>, ?NS_VERSION}],
|
|
children = []}]},
|
|
ejabberd_router:route(From2, To, Packet),
|
|
Els = receive
|
|
{route, To, From2, IQ} ->
|
|
#xmlel{name = <<"query">>, children = List} =
|
|
xml:get_subtag(IQ, <<"query">>),
|
|
List
|
|
after 5000 -> % Timeout in miliseconds: 5 seconds
|
|
[]
|
|
end,
|
|
Values = [{Name, Value}
|
|
|| #xmlel{name = Name, attrs = [],
|
|
children = [{xmlcdata, Value}]}
|
|
<- Els],
|
|
Values_string1 = [io_lib:format("~n~s: ~p", [N, V])
|
|
|| {N, V} <- Values],
|
|
Values_string2 = iolist_to_binary(Values_string1),
|
|
?INFO_MSG("Information of the client: ~s~s",
|
|
[ToS, Values_string2]).
|