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xmpp.chapril.org-ejabberd/src/ejabberd_sm.erl
Evgeniy Khramtsov fced8dc3d9 Replace some ?ERR_* macros with ?ERRT_*
2016-03-31 11:00:29 +03:00

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%%%----------------------------------------------------------------------
%%% File : ejabberd_sm.erl
%%% Author : Alexey Shchepin <alexey@process-one.net>
%%% Purpose : Session manager
%%% Created : 24 Nov 2002 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(ejabberd_sm).
-behaviour(ejabberd_config).
-author('alexey@process-one.net').
-behaviour(gen_server).
%% API
-export([start/0,
start_link/0,
route/3,
process_iq/3,
open_session/5,
open_session/6,
close_session/4,
check_in_subscription/6,
bounce_offline_message/3,
disconnect_removed_user/2,
get_user_resources/2,
get_user_present_resources/2,
set_presence/7,
unset_presence/6,
close_session_unset_presence/5,
dirty_get_sessions_list/0,
dirty_get_my_sessions_list/0,
get_vh_session_list/1,
get_vh_session_number/1,
get_vh_by_backend/1,
register_iq_handler/4,
register_iq_handler/5,
unregister_iq_handler/2,
force_update_presence/1,
connected_users/0,
connected_users_number/0,
user_resources/2,
kick_user/2,
get_session_pid/3,
get_user_info/3,
get_user_ip/3,
get_max_user_sessions/2,
get_all_pids/0,
is_existing_resource/3,
get_commands_spec/0
]).
-export([init/1, handle_call/3, handle_cast/2,
handle_info/2, terminate/2, code_change/3, opt_type/1]).
-include("ejabberd.hrl").
-include("logger.hrl").
-include("jlib.hrl").
-include("ejabberd_commands.hrl").
-include("mod_privacy.hrl").
-include("ejabberd_sm.hrl").
-callback init() -> ok | {error, any()}.
-callback set_session(#session{}) -> ok.
-callback delete_session(binary(), binary(), binary(), sid()) ->
{ok, #session{}} | {error, notfound}.
-callback get_sessions() -> [#session{}].
-callback get_sessions(binary()) -> [#session{}].
-callback get_sessions(binary(), binary()) -> [#session{}].
-callback get_sessions(binary(), binary(), binary()) -> [#session{}].
-record(state, {}).
%% default value for the maximum number of user connections
-define(MAX_USER_SESSIONS, infinity).
%%====================================================================
%% API
%%====================================================================
-export_type([sid/0]).
start() ->
ChildSpec = {?MODULE, {?MODULE, start_link, []},
transient, 1000, worker, [?MODULE]},
supervisor:start_child(ejabberd_sup, ChildSpec).
start_link() ->
gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).
-spec route(jid(), jid(), xmlel() | broadcast()) -> ok.
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.
-spec open_session(sid(), binary(), binary(), binary(), prio(), info()) -> ok.
open_session(SID, User, Server, Resource, Priority, Info) ->
set_session(SID, User, Server, Resource, Priority, Info),
check_for_sessions_to_replace(User, Server, Resource),
JID = jid:make(User, Server, Resource),
ejabberd_hooks:run(sm_register_connection_hook,
JID#jid.lserver, [SID, JID, Info]).
-spec open_session(sid(), binary(), binary(), binary(), info()) -> ok.
open_session(SID, User, Server, Resource, Info) ->
open_session(SID, User, Server, Resource, undefined, Info).
-spec close_session(sid(), binary(), binary(), binary()) -> ok.
close_session(SID, User, Server, Resource) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
LResource = jid:resourceprep(Resource),
Mod = get_sm_backend(LServer),
Info = case Mod:delete_session(LUser, LServer, LResource, SID) of
{ok, #session{info = I}} -> I;
{error, notfound} -> []
end,
JID = jid:make(User, Server, Resource),
ejabberd_hooks:run(sm_remove_connection_hook,
JID#jid.lserver, [SID, JID, Info]).
-spec check_in_subscription(any(), binary(), binary(),
any(), any(), any()) -> any().
check_in_subscription(Acc, User, Server, _JID, _Type, _Reason) ->
case ejabberd_auth:is_user_exists(User, Server) of
true -> Acc;
false -> {stop, false}
end.
-spec bounce_offline_message(jid(), jid(), xmlel()) -> stop.
bounce_offline_message(From, To, Packet) ->
Lang = fxml:get_tag_attr_s(<<"xml:lang">>, Packet),
Txt = <<"User session not found">>,
Err = jlib:make_error_reply(
Packet, ?ERRT_SERVICE_UNAVAILABLE(Lang, Txt)),
ejabberd_router:route(To, From, Err),
stop.
-spec disconnect_removed_user(binary(), binary()) -> ok.
disconnect_removed_user(User, Server) ->
ejabberd_sm:route(jid:make(<<"">>, <<"">>, <<"">>),
jid:make(User, Server, <<"">>),
{broadcast, {exit, <<"User removed">>}}).
get_user_resources(User, Server) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
Mod = get_sm_backend(LServer),
Ss = Mod:get_sessions(LUser, LServer),
[element(3, S#session.usr) || S <- clean_session_list(Ss)].
-spec get_user_present_resources(binary(), binary()) -> [tuple()].
get_user_present_resources(LUser, LServer) ->
Mod = get_sm_backend(LServer),
Ss = Mod:get_sessions(LUser, LServer),
[{S#session.priority, element(3, S#session.usr)}
|| S <- clean_session_list(Ss), is_integer(S#session.priority)].
-spec get_user_ip(binary(), binary(), binary()) -> ip().
get_user_ip(User, Server, Resource) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
LResource = jid:resourceprep(Resource),
Mod = get_sm_backend(LServer),
case Mod:get_sessions(LUser, LServer, LResource) of
[] ->
undefined;
Ss ->
Session = lists:max(Ss),
proplists:get_value(ip, Session#session.info)
end.
-spec get_user_info(binary(), binary(), binary()) -> info() | offline.
get_user_info(User, Server, Resource) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
LResource = jid:resourceprep(Resource),
Mod = get_sm_backend(LServer),
case Mod:get_sessions(LUser, LServer, LResource) of
[] ->
offline;
Ss ->
Session = lists:max(Ss),
Node = node(element(2, Session#session.sid)),
Conn = proplists:get_value(conn, Session#session.info),
IP = proplists:get_value(ip, Session#session.info),
[{node, Node}, {conn, Conn}, {ip, IP}]
end.
-spec set_presence(sid(), binary(), binary(), binary(),
prio(), xmlel(), info()) -> ok.
set_presence(SID, User, Server, Resource, Priority,
Presence, Info) ->
set_session(SID, User, Server, Resource, Priority,
Info),
ejabberd_hooks:run(set_presence_hook,
jid:nameprep(Server),
[User, Server, Resource, Presence]).
-spec unset_presence(sid(), binary(), binary(),
binary(), binary(), info()) -> ok.
unset_presence(SID, User, Server, Resource, Status,
Info) ->
set_session(SID, User, Server, Resource, undefined,
Info),
ejabberd_hooks:run(unset_presence_hook,
jid:nameprep(Server),
[User, Server, Resource, Status]).
-spec close_session_unset_presence(sid(), binary(), binary(),
binary(), binary()) -> ok.
close_session_unset_presence(SID, User, Server,
Resource, Status) ->
close_session(SID, User, Server, Resource),
ejabberd_hooks:run(unset_presence_hook,
jid:nameprep(Server),
[User, Server, Resource, Status]).
-spec get_session_pid(binary(), binary(), binary()) -> none | pid().
get_session_pid(User, Server, Resource) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
LResource = jid:resourceprep(Resource),
Mod = get_sm_backend(LServer),
case Mod:get_sessions(LUser, LServer, LResource) of
[#session{sid = {_, Pid}}] -> Pid;
_ -> none
end.
-spec dirty_get_sessions_list() -> [ljid()].
dirty_get_sessions_list() ->
lists:flatmap(
fun(Mod) ->
[S#session.usr || S <- Mod:get_sessions()]
end, get_sm_backends()).
-spec dirty_get_my_sessions_list() -> [#session{}].
dirty_get_my_sessions_list() ->
lists:flatmap(
fun(Mod) ->
[S || S <- Mod:get_sessions(),
node(element(2, S#session.sid)) == node()]
end, get_sm_backends()).
-spec get_vh_session_list(binary()) -> [ljid()].
get_vh_session_list(Server) ->
LServer = jid:nameprep(Server),
Mod = get_sm_backend(LServer),
[S#session.usr || S <- Mod:get_sessions(LServer)].
-spec get_all_pids() -> [pid()].
get_all_pids() ->
lists:flatmap(
fun(Mod) ->
[element(2, S#session.sid) || S <- Mod:get_sessions()]
end, get_sm_backends()).
-spec get_vh_session_number(binary()) -> non_neg_integer().
get_vh_session_number(Server) ->
LServer = jid:nameprep(Server),
Mod = get_sm_backend(LServer),
length(Mod:get_sessions(LServer)).
register_iq_handler(Host, XMLNS, Module, Fun) ->
ejabberd_sm ! {register_iq_handler, Host, XMLNS, Module, Fun}.
-spec register_iq_handler(binary(), binary(), atom(), atom(), list()) -> any().
register_iq_handler(Host, XMLNS, Module, Fun, Opts) ->
ejabberd_sm ! {register_iq_handler, Host, XMLNS, Module, Fun, Opts}.
-spec unregister_iq_handler(binary(), binary()) -> any().
unregister_iq_handler(Host, XMLNS) ->
ejabberd_sm ! {unregister_iq_handler, Host, XMLNS}.
%%====================================================================
%% gen_server callbacks
%%====================================================================
init([]) ->
lists:foreach(fun(Mod) -> Mod:init() end, get_sm_backends()),
ets:new(sm_iqtable, [named_table]),
lists:foreach(
fun(Host) ->
ejabberd_hooks:add(roster_in_subscription, Host,
ejabberd_sm, check_in_subscription, 20),
ejabberd_hooks:add(offline_message_hook, Host,
ejabberd_sm, bounce_offline_message, 100),
ejabberd_hooks:add(remove_user, Host,
ejabberd_sm, disconnect_removed_user, 100)
end, ?MYHOSTS),
ejabberd_commands:register_commands(get_commands_spec()),
{ok, #state{}}.
handle_call(_Request, _From, State) ->
Reply = ok, {reply, Reply, State}.
handle_cast(_Msg, State) -> {noreply, 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_handler, Host, XMLNS, Module, Function}, State) ->
ets:insert(sm_iqtable, {{XMLNS, Host}, Module, Function}),
{noreply, State};
handle_info({register_iq_handler, Host, XMLNS, Module,
Function, Opts},
State) ->
ets:insert(sm_iqtable,
{{XMLNS, Host}, Module, Function, Opts}),
{noreply, State};
handle_info({unregister_iq_handler, Host, XMLNS},
State) ->
case ets:lookup(sm_iqtable, {XMLNS, Host}) of
[{_, Module, Function, Opts}] ->
gen_iq_handler:stop_iq_handler(Module, Function, Opts);
_ -> ok
end,
ets:delete(sm_iqtable, {XMLNS, Host}),
{noreply, State};
handle_info(_Info, State) -> {noreply, State}.
terminate(_Reason, _State) ->
ejabberd_commands:unregister_commands(get_commands_spec()),
ok.
code_change(_OldVsn, State, _Extra) -> {ok, State}.
%%--------------------------------------------------------------------
%%% Internal functions
%%--------------------------------------------------------------------
-spec set_session(sid(), binary(), binary(), binary(),
prio(), info()) -> ok.
set_session(SID, User, Server, Resource, Priority, Info) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
LResource = jid:resourceprep(Resource),
US = {LUser, LServer},
USR = {LUser, LServer, LResource},
Mod = get_sm_backend(LServer),
Mod:set_session(#session{sid = SID, usr = USR, us = US,
priority = Priority, info = Info}).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
do_route(From, To, {broadcast, _} = Packet) ->
case To#jid.lresource of
<<"">> ->
lists:foreach(fun(R) ->
do_route(From,
jid:replace_resource(To, R),
Packet)
end,
get_user_resources(To#jid.user, To#jid.server));
_ ->
{U, S, R} = jid:tolower(To),
Mod = get_sm_backend(S),
case Mod:get_sessions(U, S, R) of
[] ->
?DEBUG("packet dropped~n", []);
Ss ->
Session = lists:max(Ss),
Pid = element(2, Session#session.sid),
?DEBUG("sending to process ~p~n", [Pid]),
Pid ! {route, From, To, Packet}
end
end;
do_route(From, To, #xmlel{} = Packet) ->
?DEBUG("session manager~n\tfrom ~p~n\tto ~p~n\tpacket "
"~P~n",
[From, To, Packet, 8]),
#jid{user = User, server = Server,
luser = LUser, lserver = LServer, lresource = LResource} = To,
#xmlel{name = Name, attrs = Attrs} = Packet,
Lang = fxml:get_attr_s(<<"xml:lang">>, Attrs),
case LResource of
<<"">> ->
case Name of
<<"presence">> ->
{Pass, _Subsc} = case fxml:get_attr_s(<<"type">>, Attrs)
of
<<"subscribe">> ->
Reason = fxml:get_path_s(Packet,
[{elem,
<<"status">>},
cdata]),
{is_privacy_allow(From, To, Packet)
andalso
ejabberd_hooks:run_fold(roster_in_subscription,
LServer,
false,
[User, Server,
From,
subscribe,
Reason]),
true};
<<"subscribed">> ->
{is_privacy_allow(From, To, Packet)
andalso
ejabberd_hooks:run_fold(roster_in_subscription,
LServer,
false,
[User, Server,
From,
subscribed,
<<"">>]),
true};
<<"unsubscribe">> ->
{is_privacy_allow(From, To, Packet)
andalso
ejabberd_hooks:run_fold(roster_in_subscription,
LServer,
false,
[User, Server,
From,
unsubscribe,
<<"">>]),
true};
<<"unsubscribed">> ->
{is_privacy_allow(From, To, Packet)
andalso
ejabberd_hooks:run_fold(roster_in_subscription,
LServer,
false,
[User, Server,
From,
unsubscribed,
<<"">>]),
true};
_ -> {true, false}
end,
if Pass ->
PResources = get_user_present_resources(LUser, LServer),
lists:foreach(fun ({_, R}) ->
do_route(From,
jid:replace_resource(To,
R),
Packet)
end,
PResources);
true -> ok
end;
<<"message">> ->
case fxml:get_attr_s(<<"type">>, Attrs) of
<<"chat">> -> route_message(From, To, Packet, chat);
<<"headline">> -> route_message(From, To, Packet, headline);
<<"error">> -> ok;
<<"groupchat">> ->
ErrTxt = <<"Incorrect message type">>,
Err = jlib:make_error_reply(
Packet, ?ERRT_SERVICE_UNAVAILABLE(Lang, ErrTxt)),
ejabberd_router:route(To, From, Err);
_ ->
route_message(From, To, Packet, normal)
end;
<<"iq">> -> process_iq(From, To, Packet);
_ -> ok
end;
_ ->
Mod = get_sm_backend(LServer),
case Mod:get_sessions(LUser, LServer, LResource) of
[] ->
case Name of
<<"message">> ->
case fxml:get_attr_s(<<"type">>, Attrs) of
<<"chat">> -> route_message(From, To, Packet, chat);
<<"normal">> -> route_message(From, To, Packet, normal);
<<"">> -> route_message(From, To, Packet, normal);
<<"error">> -> ok;
_ ->
ErrTxt = <<"Incorrect message type">>,
Err = jlib:make_error_reply(
Packet,
?ERRT_SERVICE_UNAVAILABLE(Lang, ErrTxt)),
ejabberd_router:route(To, From, Err)
end;
<<"iq">> ->
case fxml:get_attr_s(<<"type">>, Attrs) of
<<"error">> -> ok;
<<"result">> -> ok;
_ ->
ErrTxt = <<"User session not found">>,
Err = jlib:make_error_reply(
Packet,
?ERRT_SERVICE_UNAVAILABLE(Lang, ErrTxt)),
ejabberd_router:route(To, From, Err)
end;
_ -> ?DEBUG("packet dropped~n", [])
end;
Ss ->
Session = lists:max(Ss),
Pid = element(2, Session#session.sid),
?DEBUG("sending to process ~p~n", [Pid]),
Pid ! {route, From, To, Packet}
end
end.
%% The default list applies to the user as a whole,
%% and is processed if there is no active list set
%% for the target session/resource to which a stanza is addressed,
%% or if there are no current sessions for the user.
is_privacy_allow(From, To, Packet) ->
User = To#jid.user,
Server = To#jid.server,
PrivacyList =
ejabberd_hooks:run_fold(privacy_get_user_list, Server,
#userlist{}, [User, Server]),
is_privacy_allow(From, To, Packet, PrivacyList).
%% Check if privacy rules allow this delivery
%% Function copied from ejabberd_c2s.erl
is_privacy_allow(From, To, Packet, PrivacyList) ->
User = To#jid.user,
Server = To#jid.server,
allow ==
ejabberd_hooks:run_fold(privacy_check_packet, Server,
allow,
[User, Server, PrivacyList, {From, To, Packet},
in]).
route_message(From, To, Packet, Type) ->
LUser = To#jid.luser,
LServer = To#jid.lserver,
PrioRes = get_user_present_resources(LUser, LServer),
case catch lists:max(PrioRes) of
{Priority, _R}
when is_integer(Priority), Priority >= 0 ->
lists:foreach(fun ({P, R}) when P == Priority;
(P >= 0) and (Type == headline) ->
LResource = jid:resourceprep(R),
Mod = get_sm_backend(LServer),
case Mod:get_sessions(LUser, LServer,
LResource) of
[] ->
ok; % Race condition
Ss ->
Session = lists:max(Ss),
Pid = element(2, Session#session.sid),
?DEBUG("sending to process ~p~n", [Pid]),
Pid ! {route, From, To, Packet}
end;
%% Ignore other priority:
({_Prio, _Res}) -> ok
end,
PrioRes);
_ ->
case Type of
headline -> ok;
_ ->
case ejabberd_auth:is_user_exists(LUser, LServer) of
true ->
case is_privacy_allow(From, To, Packet) of
true ->
ejabberd_hooks:run(offline_message_hook, LServer,
[From, To, Packet]);
false -> ok
end;
_ ->
Err = jlib:make_error_reply(Packet,
?ERR_SERVICE_UNAVAILABLE),
ejabberd_router:route(To, From, Err)
end
end
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
clean_session_list(Ss) ->
clean_session_list(lists:keysort(#session.usr, Ss), []).
clean_session_list([], Res) -> Res;
clean_session_list([S], Res) -> [S | Res];
clean_session_list([S1, S2 | Rest], Res) ->
if S1#session.usr == S2#session.usr ->
if S1#session.sid > S2#session.sid ->
clean_session_list([S1 | Rest], Res);
true -> clean_session_list([S2 | Rest], Res)
end;
true -> clean_session_list([S2 | Rest], [S1 | Res])
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% On new session, check if some existing connections need to be replace
check_for_sessions_to_replace(User, Server, Resource) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
LResource = jid:resourceprep(Resource),
check_existing_resources(LUser, LServer, LResource),
check_max_sessions(LUser, LServer).
check_existing_resources(LUser, LServer, LResource) ->
SIDs = get_resource_sessions(LUser, LServer, LResource),
if SIDs == [] -> ok;
true ->
MaxSID = lists:max(SIDs),
lists:foreach(fun ({_, Pid} = S) when S /= MaxSID ->
Pid ! replaced;
(_) -> ok
end,
SIDs)
end.
-spec is_existing_resource(binary(), binary(), binary()) -> boolean().
is_existing_resource(LUser, LServer, LResource) ->
[] /= get_resource_sessions(LUser, LServer, LResource).
get_resource_sessions(User, Server, Resource) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
LResource = jid:resourceprep(Resource),
Mod = get_sm_backend(LServer),
[S#session.sid || S <- Mod:get_sessions(LUser, LServer, LResource)].
check_max_sessions(LUser, LServer) ->
Mod = get_sm_backend(LServer),
SIDs = [S#session.sid || S <- Mod:get_sessions(LUser, LServer)],
MaxSessions = get_max_user_sessions(LUser, LServer),
if length(SIDs) =< MaxSessions -> ok;
true -> {_, Pid} = lists:min(SIDs), Pid ! replaced
end.
%% Get the user_max_session setting
%% This option defines the max number of time a given users are allowed to
%% log in
%% Defaults to infinity
get_max_user_sessions(LUser, Host) ->
case acl:match_rule(Host, max_user_sessions,
jid:make(LUser, Host, <<"">>))
of
Max when is_integer(Max) -> Max;
infinity -> infinity;
_ -> ?MAX_USER_SESSIONS
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
process_iq(From, To, Packet) ->
IQ = jlib:iq_query_info(Packet),
case IQ of
#iq{xmlns = XMLNS, lang = Lang} ->
Host = To#jid.lserver,
case ets:lookup(sm_iqtable, {XMLNS, Host}) of
[{_, Module, Function}] ->
ResIQ = Module:Function(From, To, IQ),
if ResIQ /= ignore ->
ejabberd_router:route(To, From, jlib:iq_to_xml(ResIQ));
true -> ok
end;
[{_, Module, Function, Opts}] ->
gen_iq_handler:handle(Host, Module, Function, Opts,
From, To, IQ);
[] ->
Txt = <<"No module is handling this query">>,
Err = jlib:make_error_reply(
Packet,
?ERRT_SERVICE_UNAVAILABLE(Lang, Txt)),
ejabberd_router:route(To, From, Err)
end;
reply -> ok;
_ ->
Err = jlib:make_error_reply(Packet, ?ERR_BAD_REQUEST),
ejabberd_router:route(To, From, Err),
ok
end.
-spec force_update_presence({binary(), binary()}) -> any().
force_update_presence({LUser, LServer}) ->
Mod = get_sm_backend(LServer),
Ss = Mod:get_sessions(LUser, LServer),
lists:foreach(fun (#session{sid = {_, Pid}}) ->
Pid ! {force_update_presence, LUser, LServer}
end,
Ss).
-spec get_sm_backend(binary()) -> module().
get_sm_backend(Host) ->
DBType = ejabberd_config:get_option({sm_db_type, Host},
fun(mnesia) -> mnesia;
(internal) -> mnesia;
(odbc) -> odbc;
(redis) -> redis
end, mnesia),
list_to_atom("ejabberd_sm_" ++ atom_to_list(DBType)).
-spec get_sm_backends() -> [module()].
get_sm_backends() ->
lists:usort([get_sm_backend(Host) || Host <- ?MYHOSTS]).
-spec get_vh_by_backend(module()) -> [binary()].
get_vh_by_backend(Mod) ->
lists:filter(
fun(Host) ->
get_sm_backend(Host) == Mod
end, ?MYHOSTS).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% ejabberd commands
get_commands_spec() ->
[#ejabberd_commands{name = connected_users,
tags = [session],
desc = "List all established sessions",
policy = admin,
module = ?MODULE, function = connected_users, args = [],
result = {connected_users, {list, {sessions, string}}}},
#ejabberd_commands{name = connected_users_number,
tags = [session, stats],
desc = "Get the number of established sessions",
policy = admin,
module = ?MODULE, function = connected_users_number,
args = [], result = {num_sessions, integer}},
#ejabberd_commands{name = user_resources,
tags = [session],
desc = "List user's connected resources",
policy = user,
module = ?MODULE, function = user_resources,
args = [],
result = {resources, {list, {resource, string}}}},
#ejabberd_commands{name = kick_user,
tags = [session],
desc = "Disconnect user's active sessions",
module = ?MODULE, function = kick_user,
args = [{user, binary}, {host, binary}],
result = {num_resources, integer}}].
-spec connected_users() -> [binary()].
connected_users() ->
USRs = dirty_get_sessions_list(),
SUSRs = lists:sort(USRs),
lists:map(fun ({U, S, R}) -> <<U/binary, $@, S/binary, $/, R/binary>> end,
SUSRs).
connected_users_number() ->
length(dirty_get_sessions_list()).
user_resources(User, Server) ->
Resources = get_user_resources(User, Server),
lists:sort(Resources).
kick_user(User, Server) ->
Resources = get_user_resources(User, Server),
lists:foreach(
fun(Resource) ->
PID = get_session_pid(User, Server, Resource),
PID ! kick
end, Resources),
length(Resources).
opt_type(sm_db_type) ->
fun (mnesia) -> mnesia;
(internal) -> mnesia;
(odbc) -> odbc;
(redis) -> redis
end;
opt_type(_) -> [sm_db_type].
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