mirror of
https://github.com/processone/ejabberd.git
synced 2024-06-24 22:25:47 +02:00
![Jean-Sébastien Pédron](/assets/img/avatar_default.png)
o Remove the compatibility code. It's becoming confusing to handle every case every where. Also, in JIDs (normal and short), the atom "undefined' is expected, not the empty string anymore! SVN Revision: 1546
330 lines
12 KiB
Erlang
330 lines
12 KiB
Erlang
%%%----------------------------------------------------------------------
|
|
%%% File : ejabberd_local.erl
|
|
%%% Author : Alexey Shchepin <alexey@process-one.net>
|
|
%%% Purpose : Route local packets
|
|
%%% Created : 30 Nov 2002 by Alexey Shchepin <alexey@process-one.net>
|
|
%%%
|
|
%%%
|
|
%%% ejabberd, Copyright (C) 2002-2008 Process-one
|
|
%%%
|
|
%%% 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(ejabberd_local).
|
|
-author('alexey@process-one.net').
|
|
|
|
-behaviour(gen_server).
|
|
|
|
%% API
|
|
-export([start_link/0]).
|
|
|
|
-export([route/3,
|
|
register_iq_handler/4,
|
|
register_iq_handler/5,
|
|
register_iq_response_handler/4,
|
|
unregister_iq_handler/2,
|
|
unregister_iq_response_handler/2,
|
|
refresh_iq_handlers/0,
|
|
bounce_resource_packet/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").
|
|
|
|
-record(state, {}).
|
|
|
|
-record(iq_response, {id, module, function}).
|
|
|
|
-define(IQTABLE, local_iqtable).
|
|
|
|
% These are the namespace already declared by the stream opening. This is
|
|
% used at serialization time.
|
|
-define(DEFAULT_NS, ?NS_JABBER_CLIENT).
|
|
-define(PREFIXED_NS, [
|
|
{?NS_XMPP, ?NS_XMPP_pfx}, {?NS_DIALBACK, ?NS_DIALBACK_pfx}
|
|
]).
|
|
|
|
%%====================================================================
|
|
%% API
|
|
%%====================================================================
|
|
%%--------------------------------------------------------------------
|
|
%% Function: start_link() -> {ok,Pid} | ignore | {error,Error}
|
|
%% Description: Starts the server
|
|
%%--------------------------------------------------------------------
|
|
start_link() ->
|
|
gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).
|
|
|
|
process_iq(From, To, Packet) ->
|
|
case exmpp_iq:xmlel_to_iq(Packet) of
|
|
#iq{kind = request, ns = XMLNS} = IQ_Rec ->
|
|
Host = To#jid.ldomain,
|
|
case ets:lookup(?IQTABLE, {XMLNS, Host}) of
|
|
[{_, Module, Function}] ->
|
|
ResIQ = Module:Function(From, To, IQ_Rec),
|
|
if
|
|
ResIQ /= ignore ->
|
|
Reply = exmpp_iq:iq_to_xmlel(ResIQ, To, From),
|
|
ejabberd_router:route(To, From, Reply);
|
|
true ->
|
|
ok
|
|
end;
|
|
[{_, Module, Function, Opts}] ->
|
|
gen_iq_handler:handle(Host, Module, Function, Opts,
|
|
From, To, IQ_Rec);
|
|
[] ->
|
|
Err = exmpp_iq:error(Packet, 'feature-not-implemented'),
|
|
ejabberd_router:route(To, From, Err)
|
|
end;
|
|
#iq{kind = response} = IQ_Rec ->
|
|
process_iq_reply(From, To, IQ_Rec);
|
|
_ ->
|
|
Err = exmpp_iq:error(Packet, 'bad-request'),
|
|
ejabberd_router:route(To, From, Err),
|
|
ok
|
|
end.
|
|
|
|
process_iq_reply(From, To, #iq{id = ID} = IQ_Rec) ->
|
|
case catch mnesia:dirty_read(iq_response, ID) of
|
|
[] ->
|
|
ok;
|
|
_ ->
|
|
F = fun() ->
|
|
case mnesia:read({iq_response, ID}) of
|
|
[] ->
|
|
nothing;
|
|
[#iq_response{module = Module,
|
|
function = Function}] ->
|
|
mnesia:delete({iq_response, ID}),
|
|
{Module, Function}
|
|
end
|
|
end,
|
|
case mnesia:transaction(F) of
|
|
{atomic, {Module, Function}} ->
|
|
Module:Function(From, To, IQ_Rec);
|
|
_ ->
|
|
ok
|
|
end
|
|
end.
|
|
|
|
route(FromOld, ToOld, #xmlelement{} = PacketOld) ->
|
|
catch throw(for_stacktrace), % To have a stacktrace.
|
|
io:format("~nLOCAL: old #xmlelement:~n~p~n~p~n~n",
|
|
[PacketOld, erlang:get_stacktrace()]),
|
|
% XXX OLD FORMAT: From, To, Packet.
|
|
From = jlib:from_old_jid(FromOld),
|
|
To = jlib:from_old_jid(ToOld),
|
|
Packet = exmpp_xml:xmlelement_to_xmlel(PacketOld, [?NS_JABBER_CLIENT],
|
|
[{?NS_XMPP, ?NS_XMPP_pfx}]),
|
|
route(From, To, Packet);
|
|
route(From, To, Packet) ->
|
|
case catch do_route(From, To, Packet) of
|
|
{'EXIT', Reason} ->
|
|
?ERROR_MSG("~p~nwhen processing: ~p",
|
|
[Reason, {From, To, Packet}]);
|
|
_ ->
|
|
ok
|
|
end.
|
|
|
|
register_iq_response_handler(Host, ID, Module, Fun) ->
|
|
ejabberd_local ! {register_iq_response_handler, Host, ID, Module, Fun}.
|
|
|
|
register_iq_handler(Host, XMLNS, Module, Fun) ->
|
|
ejabberd_local ! {register_iq_handler, Host, XMLNS, Module, Fun}.
|
|
|
|
register_iq_handler(Host, XMLNS, Module, Fun, Opts) ->
|
|
ejabberd_local ! {register_iq_handler, Host, XMLNS, Module, Fun, Opts}.
|
|
|
|
unregister_iq_response_handler(Host, ID) ->
|
|
ejabberd_local ! {unregister_iq_response_handler, Host, ID}.
|
|
|
|
unregister_iq_handler(Host, XMLNS) ->
|
|
ejabberd_local ! {unregister_iq_handler, Host, XMLNS}.
|
|
|
|
refresh_iq_handlers() ->
|
|
ejabberd_local ! refresh_iq_handlers.
|
|
|
|
bounce_resource_packet(From, To, Packet) ->
|
|
Err = exmpp_stanza:error(Packet, 'item-not-found'),
|
|
ejabberd_router:route(To, From, Err),
|
|
stop.
|
|
|
|
%%====================================================================
|
|
%% gen_server callbacks
|
|
%%====================================================================
|
|
|
|
%%--------------------------------------------------------------------
|
|
%% Function: init(Args) -> {ok, State} |
|
|
%% {ok, State, Timeout} |
|
|
%% ignore |
|
|
%% {stop, Reason}
|
|
%% Description: Initiates the server
|
|
%%--------------------------------------------------------------------
|
|
init([]) ->
|
|
lists:foreach(
|
|
fun(Host) ->
|
|
ejabberd_router:register_route(Host, {apply, ?MODULE, route}),
|
|
ejabberd_hooks:add(local_send_to_resource_hook, Host,
|
|
?MODULE, bounce_resource_packet, 100)
|
|
end, ?MYHOSTS),
|
|
catch ets:new(?IQTABLE, [named_table, public]),
|
|
mnesia:create_table(iq_response,
|
|
[{ram_copies, [node()]},
|
|
{attributes, record_info(fields, iq_response)}]),
|
|
mnesia:add_table_copy(iq_response, node(), ram_copies),
|
|
{ok, #state{}}.
|
|
|
|
%%--------------------------------------------------------------------
|
|
%% 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(_Request, _From, State) ->
|
|
Reply = ok,
|
|
{reply, Reply, 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, FromOld, ToOld, #xmlelement{} = PacketOld}, State) ->
|
|
catch throw(for_stacktrace), % To have a stacktrace.
|
|
io:format("~nLOCAL: old #xmlelement:~n~p~n~p~n~n",
|
|
[PacketOld, erlang:get_stacktrace()]),
|
|
% XXX OLD FORMAT: From, To, Packet.
|
|
From = jlib:from_old_jid(FromOld),
|
|
To = jlib:from_old_jid(ToOld),
|
|
Packet = exmpp_xml:xmlelement_to_xmlel(PacketOld, [?NS_JABBER_CLIENT],
|
|
[{?NS_XMPP, ?NS_XMPP_pfx}]),
|
|
handle_info({route, From, To, Packet}, State);
|
|
handle_info({route, From, To, Packet}, State) ->
|
|
case catch do_route(From, To, Packet) of
|
|
{'EXIT', Reason} ->
|
|
?ERROR_MSG("~p~nwhen processing: ~p",
|
|
[Reason, {From, To, Packet}]);
|
|
_ ->
|
|
ok
|
|
end,
|
|
{noreply, State};
|
|
handle_info({register_iq_response_handler, _Host, ID, Module, Function}, State) ->
|
|
mnesia:dirty_write(#iq_response{id = ID, module = Module, function = Function}),
|
|
{noreply, State};
|
|
handle_info({unregister_iq_response_handler, _Host, ID}, State) ->
|
|
mnesia:dirty_delete({iq_response, ID}),
|
|
{noreply, State};
|
|
handle_info({register_iq_handler, Host, XMLNS, Module, Function}, State) ->
|
|
ets:insert(?IQTABLE, {{XMLNS, Host}, Module, Function}),
|
|
catch mod_disco:register_feature(Host, XMLNS),
|
|
{noreply, State};
|
|
handle_info({register_iq_handler, Host, XMLNS, Module, Function, Opts}, State) ->
|
|
ets:insert(?IQTABLE, {{XMLNS, Host}, Module, Function, Opts}),
|
|
catch mod_disco:register_feature(Host, XMLNS),
|
|
{noreply, State};
|
|
handle_info({unregister_iq_handler, Host, XMLNS}, State) ->
|
|
case ets:lookup(?IQTABLE, {XMLNS, Host}) of
|
|
[{_, Module, Function, Opts}] ->
|
|
gen_iq_handler:stop_iq_handler(Module, Function, Opts);
|
|
_ ->
|
|
ok
|
|
end,
|
|
ets:delete(?IQTABLE, {XMLNS, Host}),
|
|
catch mod_disco:unregister_feature(Host, XMLNS),
|
|
{noreply, State};
|
|
handle_info(refresh_iq_handlers, State) ->
|
|
lists:foreach(
|
|
fun(T) ->
|
|
case T of
|
|
{{XMLNS, Host}, _Module, _Function, _Opts} ->
|
|
catch mod_disco:register_feature(Host, XMLNS);
|
|
{{XMLNS, Host}, _Module, _Function} ->
|
|
catch mod_disco:register_feature(Host, XMLNS);
|
|
_ ->
|
|
ok
|
|
end
|
|
end, ets:tab2list(?IQTABLE)),
|
|
{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) ->
|
|
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
|
|
%%--------------------------------------------------------------------
|
|
do_route(From, To, Packet) ->
|
|
?DEBUG("local route~n\tfrom ~p~n\tto ~p~n\tpacket ~P~n",
|
|
[From, To, Packet, 8]),
|
|
if
|
|
To#jid.lnode /= undefined ->
|
|
ejabberd_sm:route(From, To, Packet);
|
|
To#jid.lresource == undefined ->
|
|
case Packet of
|
|
_ when ?IS_IQ(Packet) ->
|
|
process_iq(From, To, Packet);
|
|
_ when ?IS_MESSAGE(Packet) ->
|
|
ok;
|
|
_ when ?IS_PRESENCE(Packet) ->
|
|
ok;
|
|
_ ->
|
|
ok
|
|
end;
|
|
true ->
|
|
case exmpp_stanza:get_type(Packet) of
|
|
"error" -> ok;
|
|
"result" -> ok;
|
|
_ ->
|
|
ejabberd_hooks:run(local_send_to_resource_hook,
|
|
To#jid.ldomain,
|
|
[From, To, Packet])
|
|
end
|
|
end.
|
|
|