mirror of
https://github.com/processone/ejabberd.git
synced 2024-11-04 15:36:57 +01:00
226 lines
6.8 KiB
Erlang
226 lines
6.8 KiB
Erlang
%%%----------------------------------------------------------------------
|
|
%%% File : mod_last.erl
|
|
%%% Author : Alexey Shchepin <alexey@process-one.net>
|
|
%%% Purpose : jabber:iq:last support (JEP-0012)
|
|
%%% Created : 24 Oct 2003 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(mod_last).
|
|
-author('alexey@process-one.net').
|
|
|
|
-behaviour(gen_mod).
|
|
|
|
-export([start/2,
|
|
stop/1,
|
|
process_local_iq/3,
|
|
process_sm_iq/3,
|
|
on_presence_update/4,
|
|
store_last_info/4,
|
|
get_last_info/2,
|
|
remove_user/2]).
|
|
|
|
-include("ejabberd.hrl").
|
|
-include("jlib.hrl").
|
|
-include("mod_privacy.hrl").
|
|
|
|
-record(last_activity, {us, timestamp, status}).
|
|
|
|
|
|
start(Host, Opts) ->
|
|
IQDisc = gen_mod:get_opt(iqdisc, Opts, one_queue),
|
|
mnesia:create_table(last_activity,
|
|
[{disc_copies, [node()]},
|
|
{attributes, record_info(fields, last_activity)}]),
|
|
update_table(),
|
|
gen_iq_handler:add_iq_handler(ejabberd_local, Host, ?NS_LAST,
|
|
?MODULE, process_local_iq, IQDisc),
|
|
gen_iq_handler:add_iq_handler(ejabberd_sm, Host, ?NS_LAST,
|
|
?MODULE, process_sm_iq, IQDisc),
|
|
ejabberd_hooks:add(remove_user, Host,
|
|
?MODULE, remove_user, 50),
|
|
ejabberd_hooks:add(unset_presence_hook, Host,
|
|
?MODULE, on_presence_update, 50).
|
|
|
|
stop(Host) ->
|
|
ejabberd_hooks:delete(remove_user, Host,
|
|
?MODULE, remove_user, 50),
|
|
ejabberd_hooks:delete(unset_presence_hook, Host,
|
|
?MODULE, on_presence_update, 50),
|
|
gen_iq_handler:remove_iq_handler(ejabberd_local, Host, ?NS_LAST),
|
|
gen_iq_handler:remove_iq_handler(ejabberd_sm, Host, ?NS_LAST).
|
|
|
|
process_local_iq(_From, _To, #iq{type = Type, sub_el = SubEl} = IQ) ->
|
|
case Type of
|
|
set ->
|
|
IQ#iq{type = error, sub_el = [SubEl, ?ERR_NOT_ALLOWED]};
|
|
get ->
|
|
Sec = trunc(element(1, erlang:statistics(wall_clock))/1000),
|
|
IQ#iq{type = result,
|
|
sub_el = [{xmlelement, "query",
|
|
[{"xmlns", ?NS_LAST},
|
|
{"seconds", integer_to_list(Sec)}],
|
|
[]}]}
|
|
end.
|
|
|
|
|
|
process_sm_iq(From, To, #iq{type = Type, sub_el = SubEl} = IQ) ->
|
|
case Type of
|
|
set ->
|
|
IQ#iq{type = error, sub_el = [SubEl, ?ERR_NOT_ALLOWED]};
|
|
get ->
|
|
User = To#jid.luser,
|
|
Server = To#jid.lserver,
|
|
{Subscription, _Groups} =
|
|
ejabberd_hooks:run_fold(
|
|
roster_get_jid_info, Server,
|
|
{none, []}, [User, Server, From]),
|
|
if
|
|
(Subscription == both) or (Subscription == from) ->
|
|
UserListRecord = ejabberd_hooks:run_fold(
|
|
privacy_get_user_list, Server,
|
|
#userlist{},
|
|
[User, Server]),
|
|
case ejabberd_hooks:run_fold(
|
|
privacy_check_packet, Server,
|
|
allow,
|
|
[User, Server, UserListRecord,
|
|
{From, To,
|
|
{xmlelement, "presence", [], []}},
|
|
out]) of
|
|
allow ->
|
|
get_last(IQ, SubEl, User, Server);
|
|
deny ->
|
|
IQ#iq{type = error,
|
|
sub_el = [SubEl, ?ERR_NOT_ALLOWED]}
|
|
end;
|
|
true ->
|
|
IQ#iq{type = error,
|
|
sub_el = [SubEl, ?ERR_NOT_ALLOWED]}
|
|
end
|
|
end.
|
|
|
|
%% TODO: This function could use get_last_info/2
|
|
get_last(IQ, SubEl, LUser, LServer) ->
|
|
case catch mnesia:dirty_read(last_activity, {LUser, LServer}) of
|
|
{'EXIT', _Reason} ->
|
|
IQ#iq{type = error, sub_el = [SubEl, ?ERR_INTERNAL_SERVER_ERROR]};
|
|
[] ->
|
|
IQ#iq{type = error, sub_el = [SubEl, ?ERR_SERVICE_UNAVAILABLE]};
|
|
[#last_activity{timestamp = TimeStamp, status = Status}] ->
|
|
{MegaSecs, Secs, _MicroSecs} = now(),
|
|
TimeStamp2 = MegaSecs * 1000000 + Secs,
|
|
Sec = TimeStamp2 - TimeStamp,
|
|
IQ#iq{type = result,
|
|
sub_el = [{xmlelement, "query",
|
|
[{"xmlns", ?NS_LAST},
|
|
{"seconds", integer_to_list(Sec)}],
|
|
[{xmlcdata, Status}]}]}
|
|
end.
|
|
|
|
|
|
|
|
on_presence_update(User, Server, _Resource, Status) ->
|
|
{MegaSecs, Secs, _MicroSecs} = now(),
|
|
TimeStamp = MegaSecs * 1000000 + Secs,
|
|
store_last_info(User, Server, TimeStamp, Status).
|
|
|
|
store_last_info(User, Server, TimeStamp, Status) ->
|
|
LUser = jlib:nodeprep(User),
|
|
LServer = jlib:nameprep(Server),
|
|
US = {LUser, LServer},
|
|
F = fun() ->
|
|
mnesia:write(#last_activity{us = US,
|
|
timestamp = TimeStamp,
|
|
status = Status})
|
|
end,
|
|
mnesia:transaction(F).
|
|
|
|
%% Returns: {ok, Timestamp, Status} | not_found
|
|
get_last_info(LUser, LServer) ->
|
|
case catch mnesia:dirty_read(last_activity, {LUser, LServer}) of
|
|
{'EXIT', _Reason} ->
|
|
not_found;
|
|
[] ->
|
|
not_found;
|
|
[#last_activity{timestamp = TimeStamp, status = Status}] ->
|
|
{ok, TimeStamp, Status}
|
|
end.
|
|
|
|
remove_user(User, Server) ->
|
|
LUser = jlib:nodeprep(User),
|
|
LServer = jlib:nameprep(Server),
|
|
US = {LUser, LServer},
|
|
F = fun() ->
|
|
mnesia:delete({last_activity, US})
|
|
end,
|
|
mnesia:transaction(F).
|
|
|
|
|
|
update_table() ->
|
|
Fields = record_info(fields, last_activity),
|
|
case mnesia:table_info(last_activity, attributes) of
|
|
Fields ->
|
|
ok;
|
|
[user, timestamp, status] ->
|
|
?INFO_MSG("Converting last_activity table from {user, timestamp, status} format", []),
|
|
Host = ?MYNAME,
|
|
mnesia:transform_table(last_activity, ignore, Fields),
|
|
F = fun() ->
|
|
mnesia:write_lock_table(last_activity),
|
|
mnesia:foldl(
|
|
fun({_, U, T, S} = R, _) ->
|
|
mnesia:delete_object(R),
|
|
mnesia:write(
|
|
#last_activity{us = {U, Host},
|
|
timestamp = T,
|
|
status = S})
|
|
end, ok, last_activity)
|
|
end,
|
|
mnesia:transaction(F);
|
|
[user, timestamp] ->
|
|
?INFO_MSG("Converting last_activity table from {user, timestamp} format", []),
|
|
Host = ?MYNAME,
|
|
mnesia:transform_table(
|
|
last_activity,
|
|
fun({_, U, T}) ->
|
|
#last_activity{us = U,
|
|
timestamp = T,
|
|
status = ""}
|
|
end, Fields),
|
|
F = fun() ->
|
|
mnesia:write_lock_table(last_activity),
|
|
mnesia:foldl(
|
|
fun({_, U, T, S} = R, _) ->
|
|
mnesia:delete_object(R),
|
|
mnesia:write(
|
|
#last_activity{us = {U, Host},
|
|
timestamp = T,
|
|
status = S})
|
|
end, ok, last_activity)
|
|
end,
|
|
mnesia:transaction(F);
|
|
_ ->
|
|
?INFO_MSG("Recreating last_activity table", []),
|
|
mnesia:transform_table(last_activity, ignore, Fields)
|
|
end.
|
|
|