Chapril
/
xmpp.chapril.org-ejabberd
mirror of https://github.com/processone/ejabberd.git
24
1
Fork 0
Code Releases Activity
xmpp.chapril.org-ejabberd/src/mod_last.erl

254 lines
8.1 KiB
Erlang
Raw Blame History

%%%----------------------------------------------------------------------
%%% File : mod_last.erl
%%% Author : Alexey Shchepin <alexey@process-one.net>
%%% Purpose : jabber:iq:last support (XEP-0012)
%%% Created : 24 Oct 2003 by Alexey Shchepin <alexey@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2016 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.,
%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
%%%
%%%----------------------------------------------------------------------
-module(mod_last).
-behaviour(ejabberd_config).
-author('alexey@process-one.net').
-protocol({xep, 12, '2.0'}).
-behaviour(gen_mod).
-export([start/2, stop/1, process_local_iq/3, export/1,
process_sm_iq/3, on_presence_update/4, import/1,
import/3, store_last_info/4, get_last_info/2,
remove_user/2, transform_options/1, mod_opt_type/1,
opt_type/1]).
-include("ejabberd.hrl").
-include("logger.hrl").
-include("jlib.hrl").
-include("mod_privacy.hrl").
-include("mod_last.hrl").
-callback init(binary(), gen_mod:opts()) -> any().
-callback import(binary(), #last_activity{}) -> ok | pass.
-callback get_last(binary(), binary()) ->
{ok, non_neg_integer(), binary()} | not_found | {error, any()}.
-callback store_last_info(binary(), binary(), non_neg_integer(), binary()) ->
{atomic, any()}.
-callback remove_user(binary(), binary()) -> {atomic, any()}.
start(Host, Opts) ->
IQDisc = gen_mod:get_opt(iqdisc, Opts, fun gen_iq_handler:check_type/1,
one_queue),
Mod = gen_mod:db_mod(Host, Opts, ?MODULE),
Mod:init(Host, Opts),
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).
%%%
%%% Uptime of ejabberd node
%%%
process_local_iq(_From, _To,
#iq{type = Type, lang = Lang, sub_el = SubEl} = IQ) ->
case Type of
set ->
Txt = <<"Value 'set' of 'type' attribute is not allowed">>,
IQ#iq{type = error, sub_el = [SubEl, ?ERRT_NOT_ALLOWED(Lang, Txt)]};
get ->
Sec = get_node_uptime(),
IQ#iq{type = result,
sub_el =
[#xmlel{name = <<"query">>,
attrs =
[{<<"xmlns">>, ?NS_LAST},
{<<"seconds">>,
iolist_to_binary(integer_to_list(Sec))}],
children = []}]}
end.
%% @spec () -> integer()
%% @doc Get the uptime of the ejabberd node, expressed in seconds.
%% When ejabberd is starting, ejabberd_config:start/0 stores the datetime.
get_node_uptime() ->
case ejabberd_config:get_option(
node_start,
fun(S) when is_integer(S), S >= 0 -> S end) of
undefined ->
trunc(element(1, erlang:statistics(wall_clock)) / 1000);
Now ->
p1_time_compat:system_time(seconds) - Now
end.
now_to_seconds({MegaSecs, Secs, _MicroSecs}) ->
MegaSecs * 1000000 + Secs.
%%%
%%% Serve queries about user last online
%%%
process_sm_iq(From, To,
#iq{type = Type, lang = Lang, sub_el = SubEl} = IQ) ->
case Type of
set ->
Txt = <<"Value 'set' of 'type' attribute is not allowed">>,
IQ#iq{type = error, sub_el = [SubEl, ?ERRT_NOT_ALLOWED(Lang, Txt)]};
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) or
(From#jid.luser == To#jid.luser) and
(From#jid.lserver == To#jid.lserver) ->
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,
{To, From,
#xmlel{name = <<"presence">>,
attrs = [],
children = []}},
out])
of
allow -> get_last_iq(IQ, SubEl, User, Server);
deny ->
IQ#iq{type = error, sub_el = [SubEl, ?ERR_FORBIDDEN]}
end;
true ->
Txt = <<"Not subscribed">>,
IQ#iq{type = error, sub_el = [SubEl, ?ERRT_FORBIDDEN(Lang, Txt)]}
end
end.
%% @spec (LUser::string(), LServer::string()) ->
%% {ok, TimeStamp::integer(), Status::string()} | not_found | {error, Reason}
get_last(LUser, LServer) ->
Mod = gen_mod:db_mod(LServer, ?MODULE),
Mod:get_last(LUser, LServer).
get_last_iq(#iq{lang = Lang} = IQ, SubEl, LUser, LServer) ->
case ejabberd_sm:get_user_resources(LUser, LServer) of
[] ->
case get_last(LUser, LServer) of
{error, _Reason} ->
Txt = <<"Database failure">>,
IQ#iq{type = error,
sub_el = [SubEl, ?ERRT_INTERNAL_SERVER_ERROR(Lang, Txt)]};
not_found ->
Txt = <<"No info about last activity found">>,
IQ#iq{type = error,
sub_el = [SubEl, ?ERRT_SERVICE_UNAVAILABLE(Lang, Txt)]};
{ok, TimeStamp, Status} ->
TimeStamp2 = p1_time_compat:system_time(seconds),
Sec = TimeStamp2 - TimeStamp,
IQ#iq{type = result,
sub_el =
[#xmlel{name = <<"query">>,
attrs =
[{<<"xmlns">>, ?NS_LAST},
{<<"seconds">>,
iolist_to_binary(integer_to_list(Sec))}],
children = [{xmlcdata, Status}]}]}
end;
_ ->
IQ#iq{type = result,
sub_el =
[#xmlel{name = <<"query">>,
attrs =
[{<<"xmlns">>, ?NS_LAST},
{<<"seconds">>, <<"0">>}],
children = []}]}
end.
on_presence_update(User, Server, _Resource, Status) ->
TimeStamp = p1_time_compat:system_time(seconds),
store_last_info(User, Server, TimeStamp, Status).
store_last_info(User, Server, TimeStamp, Status) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
Mod = gen_mod:db_mod(LServer, ?MODULE),
Mod:store_last_info(LUser, LServer, TimeStamp, Status).
%% @spec (LUser::string(), LServer::string()) ->
%% {ok, TimeStamp::integer(), Status::string()} | not_found
get_last_info(LUser, LServer) ->
case get_last(LUser, LServer) of
{error, _Reason} -> not_found;
Res -> Res
end.
remove_user(User, Server) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
Mod = gen_mod:db_mod(LServer, ?MODULE),
Mod:remove_user(LUser, LServer).
export(LServer) ->
Mod = gen_mod:db_mod(LServer, ?MODULE),
Mod:export(LServer).
import(LServer) ->
Mod = gen_mod:db_mod(LServer, ?MODULE),
Mod:import(LServer).
import(LServer, DBType, LA) ->
Mod = gen_mod:db_mod(DBType, ?MODULE),
Mod:import(LServer, LA).
transform_options(Opts) ->
lists:foldl(fun transform_options/2, [], Opts).
transform_options({node_start, {_, _, _} = Now}, Opts) ->
?WARNING_MSG("Old 'node_start' format detected. This is still supported "
"but it is better to fix your config.", []),
[{node_start, now_to_seconds(Now)}|Opts];
transform_options(Opt, Opts) ->
[Opt|Opts].
mod_opt_type(db_type) -> fun gen_mod:v_db/1;
mod_opt_type(iqdisc) -> fun gen_iq_handler:check_type/1;
mod_opt_type(_) -> [db_type, iqdisc].
opt_type(node_start) ->
fun (S) when is_integer(S), S >= 0 -> S end;
opt_type(_) -> [node_start].
View Git Blame Copy Permalink