mirror of
https://github.com/processone/ejabberd.git
synced 2024-11-26 16:26:24 +01:00
333 lines
12 KiB
Erlang
333 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) 2002-2009 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(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 = exmpp_jid:prep_domain(To),
|
|
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:reply_with_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, list_to_binary(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]),
|
|
|
|
LNode = exmpp_jid:prep_node(To),
|
|
LResource = exmpp_jid:prep_resource(To),
|
|
if
|
|
LNode /= undefined ->
|
|
ejabberd_sm:route(From, To, Packet);
|
|
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,
|
|
exmpp_jid:prep_domain(To),
|
|
[From, To, Packet])
|
|
end
|
|
end.
|
|
|