mirror of
https://github.com/processone/ejabberd.git
synced 2024-12-24 17:29:28 +01:00
1057 lines
34 KiB
Erlang
1057 lines
34 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : ejabberd_sm.erl
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%%% Author : Alexey Shchepin <alexey@process-one.net>
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%%% Purpose : Session manager
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%%% Created : 24 Nov 2002 by Alexey Shchepin <alexey@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2019 ProcessOne
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%%%
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%%% This program is free software; you can redistribute it and/or
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%%% modify it under the terms of the GNU General Public License as
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%%% published by the Free Software Foundation; either version 2 of the
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%%% License, or (at your option) any later version.
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%%%
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%%% This program is distributed in the hope that it will be useful,
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%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
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%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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%%% General Public License for more details.
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%%%
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%%% You should have received a copy of the GNU General Public License along
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%%% with this program; if not, write to the Free Software Foundation, Inc.,
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%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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%%%
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%%%----------------------------------------------------------------------
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-module(ejabberd_sm).
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-behaviour(ejabberd_config).
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-author('alexey@process-one.net').
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-ifndef(GEN_SERVER).
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-define(GEN_SERVER, gen_server).
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-endif.
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-behaviour(?GEN_SERVER).
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%% API
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-export([start_link/0,
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stop/0,
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route/1,
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route/2,
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open_session/5,
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open_session/6,
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close_session/4,
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check_in_subscription/2,
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bounce_offline_message/1,
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bounce_sm_packet/1,
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disconnect_removed_user/2,
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get_user_resources/2,
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get_user_present_resources/2,
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set_presence/6,
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unset_presence/5,
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close_session_unset_presence/5,
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dirty_get_sessions_list/0,
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dirty_get_my_sessions_list/0,
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get_vh_session_list/1,
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get_vh_session_number/1,
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get_vh_by_backend/1,
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force_update_presence/1,
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connected_users/0,
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connected_users_number/0,
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user_resources/2,
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kick_user/2,
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kick_user/3,
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get_session_pid/3,
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get_session_sid/3,
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get_session_sids/2,
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get_user_info/2,
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get_user_info/3,
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set_user_info/5,
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del_user_info/4,
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get_user_ip/3,
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get_max_user_sessions/2,
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get_all_pids/0,
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is_existing_resource/3,
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get_commands_spec/0,
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c2s_handle_info/2,
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host_up/1,
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host_down/1,
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make_sid/0,
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clean_cache/1,
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config_reloaded/0
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]).
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-export([init/1, handle_call/3, handle_cast/2,
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handle_info/2, terminate/2, code_change/3, opt_type/1]).
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-include("logger.hrl").
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-include("xmpp.hrl").
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-include("ejabberd_commands.hrl").
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-include("ejabberd_sm.hrl").
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-include("ejabberd_stacktrace.hrl").
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-callback init() -> ok | {error, any()}.
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-callback set_session(#session{}) -> ok | {error, any()}.
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-callback delete_session(#session{}) -> ok | {error, any()}.
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-callback get_sessions() -> [#session{}].
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-callback get_sessions(binary()) -> [#session{}].
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-callback get_sessions(binary(), binary()) -> {ok, [#session{}]} | {error, any()}.
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-callback use_cache(binary()) -> boolean().
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-callback cache_nodes(binary()) -> [node()].
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-optional_callbacks([use_cache/1, cache_nodes/1]).
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-record(state, {}).
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%% default value for the maximum number of user connections
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-define(MAX_USER_SESSIONS, infinity).
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%%====================================================================
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%% API
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%%====================================================================
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-export_type([sid/0, info/0]).
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start_link() ->
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?GEN_SERVER:start_link({local, ?MODULE}, ?MODULE, [], []).
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-spec stop() -> ok.
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stop() ->
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supervisor:terminate_child(ejabberd_sup, ?MODULE),
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supervisor:delete_child(ejabberd_sup, ?MODULE),
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ok.
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-spec route(jid(), term()) -> ok.
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%% @doc route arbitrary term to c2s process(es)
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route(To, Term) ->
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case catch do_route(To, Term) of
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{'EXIT', Reason} ->
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?ERROR_MSG("route ~p to ~p failed: ~p",
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[Term, To, Reason]);
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_ ->
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ok
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end.
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-spec route(stanza()) -> ok.
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route(Packet) ->
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#jid{lserver = LServer} = xmpp:get_to(Packet),
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case ejabberd_hooks:run_fold(sm_receive_packet, LServer, Packet, []) of
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drop ->
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?DEBUG("hook dropped stanza:~n~s", [xmpp:pp(Packet)]);
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Packet1 ->
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try do_route(Packet1), ok
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catch ?EX_RULE(E, R, St) ->
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?ERROR_MSG("failed to route packet:~n~s~nReason = ~p",
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[xmpp:pp(Packet1),
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{E, {R, ?EX_STACK(St)}}])
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end
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end.
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-spec open_session(sid(), binary(), binary(), binary(), prio(), info()) -> ok.
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open_session(SID, User, Server, Resource, Priority, Info) ->
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set_session(SID, User, Server, Resource, Priority, Info),
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check_for_sessions_to_replace(User, Server, Resource),
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JID = jid:make(User, Server, Resource),
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ejabberd_hooks:run(sm_register_connection_hook,
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JID#jid.lserver, [SID, JID, Info]).
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-spec open_session(sid(), binary(), binary(), binary(), info()) -> ok.
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open_session(SID, User, Server, Resource, Info) ->
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open_session(SID, User, Server, Resource, undefined, Info).
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-spec close_session(sid(), binary(), binary(), binary()) -> ok.
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close_session(SID, User, Server, Resource) ->
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LUser = jid:nodeprep(User),
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LServer = jid:nameprep(Server),
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LResource = jid:resourceprep(Resource),
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Mod = get_sm_backend(LServer),
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Sessions = get_sessions(Mod, LUser, LServer, LResource),
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Info = case lists:keyfind(SID, #session.sid, Sessions) of
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#session{info = I} = Session ->
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delete_session(Mod, Session),
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I;
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_ ->
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[]
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end,
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JID = jid:make(User, Server, Resource),
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ejabberd_hooks:run(sm_remove_connection_hook,
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JID#jid.lserver, [SID, JID, Info]).
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-spec check_in_subscription(boolean(), presence()) -> boolean() | {stop, false}.
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check_in_subscription(Acc, #presence{to = To}) ->
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#jid{user = User, server = Server} = To,
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case ejabberd_auth:user_exists(User, Server) of
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true -> Acc;
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false -> {stop, false}
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end.
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-spec bounce_offline_message({bounce, message()} | any()) -> any().
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bounce_offline_message({bounce, #message{type = T}} = Acc)
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when T == chat; T == groupchat; T == normal ->
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bounce_sm_packet(Acc);
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bounce_offline_message(Acc) ->
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Acc.
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-spec bounce_sm_packet({bounce | term(), stanza()}) -> any().
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bounce_sm_packet({bounce, Packet} = Acc) ->
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Lang = xmpp:get_lang(Packet),
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Txt = <<"User session not found">>,
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Err = xmpp:err_service_unavailable(Txt, Lang),
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ejabberd_router:route_error(Packet, Err),
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{stop, Acc};
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bounce_sm_packet({_, Packet} = Acc) ->
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?DEBUG("dropping packet to unavailable resource:~n~s",
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[xmpp:pp(Packet)]),
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Acc.
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-spec disconnect_removed_user(binary(), binary()) -> ok.
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disconnect_removed_user(User, Server) ->
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route(jid:make(User, Server), {exit, <<"User removed">>}).
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get_user_resources(User, Server) ->
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LUser = jid:nodeprep(User),
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LServer = jid:nameprep(Server),
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Mod = get_sm_backend(LServer),
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Ss = get_sessions(Mod, LUser, LServer),
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[element(3, S#session.usr) || S <- clean_session_list(Ss)].
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-spec get_user_present_resources(binary(), binary()) -> [tuple()].
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get_user_present_resources(LUser, LServer) ->
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Mod = get_sm_backend(LServer),
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Ss = get_sessions(Mod, LUser, LServer),
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[{S#session.priority, element(3, S#session.usr)}
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|| S <- clean_session_list(Ss), is_integer(S#session.priority)].
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-spec get_user_ip(binary(), binary(), binary()) -> ip().
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get_user_ip(User, Server, Resource) ->
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LUser = jid:nodeprep(User),
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LServer = jid:nameprep(Server),
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LResource = jid:resourceprep(Resource),
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Mod = get_sm_backend(LServer),
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case get_sessions(Mod, LUser, LServer, LResource) of
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[] ->
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undefined;
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Ss ->
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Session = lists:max(Ss),
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proplists:get_value(ip, Session#session.info)
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end.
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-spec get_user_info(binary(), binary()) -> [{binary(), info()}].
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get_user_info(User, Server) ->
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LUser = jid:nodeprep(User),
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LServer = jid:nameprep(Server),
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Mod = get_sm_backend(LServer),
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Ss = get_sessions(Mod, LUser, LServer),
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[{LResource, [{node, node(Pid)}, {ts, Ts}, {pid, Pid},
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{priority, Priority} | Info]}
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|| #session{usr = {_, _, LResource},
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priority = Priority,
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info = Info,
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sid = {Ts, Pid}} <- clean_session_list(Ss)].
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-spec get_user_info(binary(), binary(), binary()) -> info() | offline.
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get_user_info(User, Server, Resource) ->
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LUser = jid:nodeprep(User),
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LServer = jid:nameprep(Server),
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LResource = jid:resourceprep(Resource),
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Mod = get_sm_backend(LServer),
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case get_sessions(Mod, LUser, LServer, LResource) of
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[] ->
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offline;
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Ss ->
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Session = lists:max(Ss),
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{Ts, Pid} = Session#session.sid,
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Node = node(Pid),
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Priority = Session#session.priority,
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[{node, Node}, {ts, Ts}, {pid, Pid}, {priority, Priority}
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|Session#session.info]
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end.
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-spec set_user_info(binary(), binary(), binary(), atom(), term()) -> ok | {error, any()}.
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set_user_info(User, Server, Resource, Key, Val) ->
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LUser = jid:nodeprep(User),
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LServer = jid:nameprep(Server),
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LResource = jid:resourceprep(Resource),
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Mod = get_sm_backend(LServer),
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case get_sessions(Mod, LUser, LServer, LResource) of
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[] -> {error, notfound};
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Ss ->
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lists:foldl(
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fun(#session{sid = {_, Pid},
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info = Info} = Session, _) when Pid == self() ->
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Info1 = lists:keystore(Key, 1, Info, {Key, Val}),
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set_session(Session#session{info = Info1});
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(_, Acc) ->
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Acc
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end, {error, not_owner}, Ss)
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end.
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-spec del_user_info(binary(), binary(), binary(), atom()) -> ok | {error, any()}.
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del_user_info(User, Server, Resource, Key) ->
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LUser = jid:nodeprep(User),
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LServer = jid:nameprep(Server),
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LResource = jid:resourceprep(Resource),
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Mod = get_sm_backend(LServer),
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case get_sessions(Mod, LUser, LServer, LResource) of
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[] -> {error, notfound};
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Ss ->
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lists:foldl(
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fun(#session{sid = {_, Pid},
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info = Info} = Session, _) when Pid == self() ->
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Info1 = lists:keydelete(Key, 1, Info),
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set_session(Session#session{info = Info1});
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(_, Acc) ->
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Acc
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end, {error, not_owner}, Ss)
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end.
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-spec set_presence(sid(), binary(), binary(), binary(),
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prio(), presence()) -> ok | {error, notfound}.
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set_presence(SID, User, Server, Resource, Priority, Presence) ->
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LUser = jid:nodeprep(User),
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LServer = jid:nameprep(Server),
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LResource = jid:resourceprep(Resource),
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Mod = get_sm_backend(LServer),
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case get_sessions(Mod, LUser, LServer, LResource) of
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[] -> {error, notfound};
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Ss ->
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case lists:keyfind(SID, #session.sid, Ss) of
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#session{info = Info} ->
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set_session(SID, User, Server, Resource, Priority, Info),
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ejabberd_hooks:run(set_presence_hook,
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LServer,
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[User, Server, Resource, Presence]);
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false ->
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{error, notfound}
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end
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end.
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-spec unset_presence(sid(), binary(), binary(),
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binary(), binary()) -> ok | {error, notfound}.
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unset_presence(SID, User, Server, Resource, Status) ->
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LUser = jid:nodeprep(User),
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LServer = jid:nameprep(Server),
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LResource = jid:resourceprep(Resource),
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Mod = get_sm_backend(LServer),
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case get_sessions(Mod, LUser, LServer, LResource) of
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[] -> {error, notfound};
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Ss ->
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case lists:keyfind(SID, #session.sid, Ss) of
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#session{info = Info} ->
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set_session(SID, User, Server, Resource, undefined, Info),
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ejabberd_hooks:run(unset_presence_hook,
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LServer,
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[User, Server, Resource, Status]);
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false ->
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{error, notfound}
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end
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end.
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-spec close_session_unset_presence(sid(), binary(), binary(),
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binary(), binary()) -> ok.
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close_session_unset_presence(SID, User, Server,
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Resource, Status) ->
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close_session(SID, User, Server, Resource),
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ejabberd_hooks:run(unset_presence_hook,
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jid:nameprep(Server),
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[User, Server, Resource, Status]).
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-spec get_session_pid(binary(), binary(), binary()) -> none | pid().
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get_session_pid(User, Server, Resource) ->
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case get_session_sid(User, Server, Resource) of
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{_, PID} -> PID;
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none -> none
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end.
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-spec get_session_sid(binary(), binary(), binary()) -> none | sid().
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get_session_sid(User, Server, Resource) ->
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LUser = jid:nodeprep(User),
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LServer = jid:nameprep(Server),
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LResource = jid:resourceprep(Resource),
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Mod = get_sm_backend(LServer),
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case get_sessions(Mod, LUser, LServer, LResource) of
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[] ->
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none;
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Ss ->
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#session{sid = SID} = lists:max(Ss),
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SID
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end.
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-spec get_session_sids(binary(), binary()) -> [sid()].
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get_session_sids(User, Server) ->
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LUser = jid:nodeprep(User),
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LServer = jid:nameprep(Server),
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Mod = get_sm_backend(LServer),
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Sessions = get_sessions(Mod, LUser, LServer),
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[SID || #session{sid = SID} <- Sessions].
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-spec dirty_get_sessions_list() -> [ljid()].
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dirty_get_sessions_list() ->
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lists:flatmap(
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fun(Mod) ->
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[S#session.usr || S <- get_sessions(Mod)]
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end, get_sm_backends()).
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-spec dirty_get_my_sessions_list() -> [#session{}].
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dirty_get_my_sessions_list() ->
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lists:flatmap(
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fun(Mod) ->
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[S || S <- get_sessions(Mod),
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node(element(2, S#session.sid)) == node()]
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end, get_sm_backends()).
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-spec get_vh_session_list(binary()) -> [ljid()].
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get_vh_session_list(Server) ->
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LServer = jid:nameprep(Server),
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Mod = get_sm_backend(LServer),
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[S#session.usr || S <- get_sessions(Mod, LServer)].
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-spec get_all_pids() -> [pid()].
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get_all_pids() ->
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lists:flatmap(
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fun(Mod) ->
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[element(2, S#session.sid) || S <- get_sessions(Mod)]
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end, get_sm_backends()).
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-spec get_vh_session_number(binary()) -> non_neg_integer().
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get_vh_session_number(Server) ->
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LServer = jid:nameprep(Server),
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Mod = get_sm_backend(LServer),
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length(get_sessions(Mod, LServer)).
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|
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%% Why the hell do we have so many similar kicks?
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c2s_handle_info(#{lang := Lang} = State, replaced) ->
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State1 = State#{replaced => true},
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Err = xmpp:serr_conflict(<<"Replaced by new connection">>, Lang),
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{stop, ejabberd_c2s:send(State1, Err)};
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c2s_handle_info(#{lang := Lang} = State, kick) ->
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Err = xmpp:serr_policy_violation(<<"has been kicked">>, Lang),
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c2s_handle_info(State, {kick, kicked_by_admin, Err});
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c2s_handle_info(State, {kick, _Reason, Err}) ->
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{stop, ejabberd_c2s:send(State, Err)};
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c2s_handle_info(#{lang := Lang} = State, {exit, Reason}) ->
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Err = xmpp:serr_conflict(Reason, Lang),
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{stop, ejabberd_c2s:send(State, Err)};
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c2s_handle_info(State, _) ->
|
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State.
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|
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-spec config_reloaded() -> ok.
|
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config_reloaded() ->
|
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init_cache().
|
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|
|
%%====================================================================
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%% gen_server callbacks
|
|
%%====================================================================
|
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|
|
init([]) ->
|
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process_flag(trap_exit, true),
|
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init_cache(),
|
|
case lists:foldl(
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fun(Mod, ok) -> Mod:init();
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(_, Err) -> Err
|
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end, ok, get_sm_backends()) of
|
|
ok ->
|
|
clean_cache(),
|
|
gen_iq_handler:start(?MODULE),
|
|
ejabberd_hooks:add(host_up, ?MODULE, host_up, 50),
|
|
ejabberd_hooks:add(host_down, ?MODULE, host_down, 60),
|
|
ejabberd_hooks:add(config_reloaded, ?MODULE, config_reloaded, 50),
|
|
lists:foreach(fun host_up/1, ejabberd_config:get_myhosts()),
|
|
ejabberd_commands:register_commands(get_commands_spec()),
|
|
{ok, #state{}};
|
|
{error, Why} ->
|
|
{stop, Why}
|
|
end.
|
|
|
|
handle_call(_Request, _From, State) ->
|
|
Reply = ok, {reply, Reply, State}.
|
|
|
|
handle_cast(_Msg, State) -> {noreply, State}.
|
|
|
|
handle_info({route, Packet}, State) ->
|
|
route(Packet),
|
|
{noreply, State};
|
|
handle_info(Info, State) ->
|
|
?WARNING_MSG("unexpected info: ~p", [Info]),
|
|
{noreply, State}.
|
|
|
|
terminate(_Reason, _State) ->
|
|
lists:foreach(fun host_down/1, ejabberd_config:get_myhosts()),
|
|
ejabberd_hooks:delete(host_up, ?MODULE, host_up, 50),
|
|
ejabberd_hooks:delete(host_down, ?MODULE, host_down, 60),
|
|
ejabberd_hooks:delete(config_reloaded, ?MODULE, config_reloaded, 50),
|
|
ejabberd_commands:unregister_commands(get_commands_spec()),
|
|
ok.
|
|
|
|
code_change(_OldVsn, State, _Extra) -> {ok, State}.
|
|
|
|
%%--------------------------------------------------------------------
|
|
%%% Internal functions
|
|
%%--------------------------------------------------------------------
|
|
-spec host_up(binary()) -> ok.
|
|
host_up(Host) ->
|
|
ejabberd_hooks:add(c2s_handle_info, Host,
|
|
ejabberd_sm, c2s_handle_info, 50),
|
|
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(bounce_sm_packet, Host,
|
|
ejabberd_sm, bounce_sm_packet, 100),
|
|
ejabberd_hooks:add(remove_user, Host,
|
|
ejabberd_sm, disconnect_removed_user, 100),
|
|
ejabberd_c2s:host_up(Host).
|
|
|
|
-spec host_down(binary()) -> ok.
|
|
host_down(Host) ->
|
|
Mod = get_sm_backend(Host),
|
|
Err = case ejabberd_cluster:get_nodes() of
|
|
[Node] when Node == node() -> xmpp:serr_system_shutdown();
|
|
_ -> xmpp:serr_reset()
|
|
end,
|
|
lists:foreach(
|
|
fun(#session{sid = {_, Pid}}) when node(Pid) == node() ->
|
|
ejabberd_c2s:send(Pid, Err),
|
|
ejabberd_c2s:stop(Pid);
|
|
(_) ->
|
|
ok
|
|
end, get_sessions(Mod, Host)),
|
|
ejabberd_hooks:delete(c2s_handle_info, Host,
|
|
ejabberd_sm, c2s_handle_info, 50),
|
|
ejabberd_hooks:delete(roster_in_subscription, Host,
|
|
ejabberd_sm, check_in_subscription, 20),
|
|
ejabberd_hooks:delete(offline_message_hook, Host,
|
|
ejabberd_sm, bounce_offline_message, 100),
|
|
ejabberd_hooks:delete(bounce_sm_packet, Host,
|
|
ejabberd_sm, bounce_sm_packet, 100),
|
|
ejabberd_hooks:delete(remove_user, Host,
|
|
ejabberd_sm, disconnect_removed_user, 100),
|
|
ejabberd_c2s:host_down(Host).
|
|
|
|
-spec set_session(sid(), binary(), binary(), binary(),
|
|
prio(), info()) -> ok | {error, any()}.
|
|
|
|
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},
|
|
set_session(#session{sid = SID, usr = USR, us = US,
|
|
priority = Priority, info = Info}).
|
|
|
|
-spec set_session(#session{}) -> ok | {error, any()}.
|
|
set_session(#session{us = {LUser, LServer}} = Session) ->
|
|
Mod = get_sm_backend(LServer),
|
|
case Mod:set_session(Session) of
|
|
ok ->
|
|
case use_cache(Mod, LServer) of
|
|
true ->
|
|
ets_cache:delete(?SM_CACHE, {LUser, LServer},
|
|
cache_nodes(Mod, LServer));
|
|
false ->
|
|
ok
|
|
end;
|
|
{error, _} = Err ->
|
|
Err
|
|
end.
|
|
|
|
-spec get_sessions(module()) -> [#session{}].
|
|
get_sessions(Mod) ->
|
|
Mod:get_sessions().
|
|
|
|
-spec get_sessions(module(), binary()) -> [#session{}].
|
|
get_sessions(Mod, LServer) ->
|
|
Mod:get_sessions(LServer).
|
|
|
|
-spec get_sessions(module(), binary(), binary()) -> [#session{}].
|
|
get_sessions(Mod, LUser, LServer) ->
|
|
case use_cache(Mod, LServer) of
|
|
true ->
|
|
case ets_cache:lookup(
|
|
?SM_CACHE, {LUser, LServer},
|
|
fun() ->
|
|
case Mod:get_sessions(LUser, LServer) of
|
|
{ok, Ss} when Ss /= [] ->
|
|
{ok, Ss};
|
|
_ ->
|
|
error
|
|
end
|
|
end) of
|
|
{ok, Sessions} ->
|
|
Sessions;
|
|
error ->
|
|
[]
|
|
end;
|
|
false ->
|
|
case Mod:get_sessions(LUser, LServer) of
|
|
{ok, Ss} -> Ss;
|
|
_ -> []
|
|
end
|
|
end.
|
|
|
|
-spec get_sessions(module(), binary(), binary(), binary()) -> [#session{}].
|
|
get_sessions(Mod, LUser, LServer, LResource) ->
|
|
Sessions = get_sessions(Mod, LUser, LServer),
|
|
[S || S <- Sessions, element(3, S#session.usr) == LResource].
|
|
|
|
-spec delete_session(module(), #session{}) -> ok.
|
|
delete_session(Mod, #session{usr = {LUser, LServer, _}} = Session) ->
|
|
Mod:delete_session(Session),
|
|
case use_cache(Mod, LServer) of
|
|
true ->
|
|
ets_cache:delete(?SM_CACHE, {LUser, LServer},
|
|
cache_nodes(Mod, LServer));
|
|
false ->
|
|
ok
|
|
end.
|
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
-spec do_route(jid(), term()) -> any().
|
|
do_route(#jid{lresource = <<"">>} = To, Term) ->
|
|
lists:foreach(
|
|
fun(R) ->
|
|
do_route(jid:replace_resource(To, R), Term)
|
|
end, get_user_resources(To#jid.user, To#jid.server));
|
|
do_route(To, Term) ->
|
|
?DEBUG("broadcasting ~p to ~s", [Term, jid:encode(To)]),
|
|
{U, S, R} = jid:tolower(To),
|
|
Mod = get_sm_backend(S),
|
|
case get_sessions(Mod, U, S, R) of
|
|
[] ->
|
|
?DEBUG("dropping broadcast to unavailable resourse: ~p", [Term]);
|
|
Ss ->
|
|
Session = lists:max(Ss),
|
|
Pid = element(2, Session#session.sid),
|
|
?DEBUG("sending to process ~p: ~p", [Pid, Term]),
|
|
ejabberd_c2s:route(Pid, Term)
|
|
end.
|
|
|
|
-spec do_route(stanza()) -> any().
|
|
do_route(#presence{to = To, type = T} = Packet)
|
|
when T == subscribe; T == subscribed; T == unsubscribe; T == unsubscribed ->
|
|
?DEBUG("processing subscription:~n~s", [xmpp:pp(Packet)]),
|
|
#jid{luser = LUser, lserver = LServer} = To,
|
|
case is_privacy_allow(Packet) andalso
|
|
ejabberd_hooks:run_fold(
|
|
roster_in_subscription,
|
|
LServer, false, [Packet]) of
|
|
true ->
|
|
Mod = get_sm_backend(LServer),
|
|
lists:foreach(
|
|
fun(#session{sid = SID, usr = {_, _, R},
|
|
priority = Prio}) when is_integer(Prio) ->
|
|
Pid = element(2, SID),
|
|
Packet1 = Packet#presence{to = jid:replace_resource(To, R)},
|
|
?DEBUG("sending to process ~p:~n~s",
|
|
[Pid, xmpp:pp(Packet1)]),
|
|
ejabberd_c2s:route(Pid, {route, Packet1});
|
|
(_) ->
|
|
ok
|
|
end, get_sessions(Mod, LUser, LServer));
|
|
false ->
|
|
ok
|
|
end;
|
|
do_route(#presence{to = #jid{lresource = <<"">>} = To} = Packet) ->
|
|
?DEBUG("processing presence to bare JID:~n~s", [xmpp:pp(Packet)]),
|
|
{LUser, LServer, _} = jid:tolower(To),
|
|
lists:foreach(
|
|
fun({_, R}) ->
|
|
do_route(Packet#presence{to = jid:replace_resource(To, R)})
|
|
end, get_user_present_resources(LUser, LServer));
|
|
do_route(#message{to = #jid{lresource = <<"">>} = To, type = T} = Packet) ->
|
|
?DEBUG("processing message to bare JID:~n~s", [xmpp:pp(Packet)]),
|
|
if T == chat; T == headline; T == normal ->
|
|
route_message(Packet);
|
|
true ->
|
|
ejabberd_hooks:run_fold(bounce_sm_packet,
|
|
To#jid.lserver, {bounce, Packet}, [])
|
|
end;
|
|
do_route(#iq{to = #jid{lresource = <<"">>} = To, type = T} = Packet) ->
|
|
if T == set; T == get ->
|
|
?DEBUG("processing IQ to bare JID:~n~s", [xmpp:pp(Packet)]),
|
|
gen_iq_handler:handle(?MODULE, Packet);
|
|
true ->
|
|
ejabberd_hooks:run_fold(bounce_sm_packet,
|
|
To#jid.lserver, {pass, Packet}, [])
|
|
end;
|
|
do_route(Packet) ->
|
|
?DEBUG("processing packet to full JID:~n~s", [xmpp:pp(Packet)]),
|
|
To = xmpp:get_to(Packet),
|
|
{LUser, LServer, LResource} = jid:tolower(To),
|
|
Mod = get_sm_backend(LServer),
|
|
case get_sessions(Mod, LUser, LServer, LResource) of
|
|
[] ->
|
|
case Packet of
|
|
#message{type = T} when T == chat; T == normal ->
|
|
route_message(Packet);
|
|
#message{type = T} when T == headline ->
|
|
ejabberd_hooks:run_fold(bounce_sm_packet,
|
|
LServer, {pass, Packet}, []);
|
|
#presence{} ->
|
|
ejabberd_hooks:run_fold(bounce_sm_packet,
|
|
LServer, {pass, Packet}, []);
|
|
_ ->
|
|
ejabberd_hooks:run_fold(bounce_sm_packet,
|
|
LServer, {bounce, Packet}, [])
|
|
end;
|
|
Ss ->
|
|
Session = lists:max(Ss),
|
|
Pid = element(2, Session#session.sid),
|
|
?DEBUG("sending to process ~p:~n~s", [Pid, xmpp:pp(Packet)]),
|
|
ejabberd_c2s:route(Pid, {route, Packet})
|
|
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.
|
|
-spec is_privacy_allow(stanza()) -> boolean().
|
|
is_privacy_allow(Packet) ->
|
|
To = xmpp:get_to(Packet),
|
|
LServer = To#jid.server,
|
|
allow == ejabberd_hooks:run_fold(
|
|
privacy_check_packet, LServer, allow,
|
|
[To, Packet, in]).
|
|
|
|
-spec route_message(message()) -> any().
|
|
route_message(#message{to = To, type = Type} = Packet) ->
|
|
LUser = To#jid.luser,
|
|
LServer = To#jid.lserver,
|
|
PrioRes = get_user_present_resources(LUser, LServer),
|
|
case catch lists:max(PrioRes) of
|
|
{MaxPrio, MaxRes}
|
|
when is_integer(MaxPrio), MaxPrio >= 0 ->
|
|
lists:foreach(fun ({P, R}) when P == MaxPrio;
|
|
(P >= 0) and (Type == headline) ->
|
|
LResource = jid:resourceprep(R),
|
|
Mod = get_sm_backend(LServer),
|
|
case get_sessions(Mod, 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]),
|
|
LMaxRes = jid:resourceprep(MaxRes),
|
|
Packet1 = maybe_mark_as_copy(Packet,
|
|
LResource,
|
|
LMaxRes,
|
|
P, MaxPrio),
|
|
ejabberd_c2s:route(Pid, {route, Packet1})
|
|
end;
|
|
%% Ignore other priority:
|
|
({_Prio, _Res}) -> ok
|
|
end,
|
|
PrioRes);
|
|
_ ->
|
|
case ejabberd_auth:user_exists(LUser, LServer) andalso
|
|
is_privacy_allow(Packet) of
|
|
true ->
|
|
ejabberd_hooks:run_fold(offline_message_hook,
|
|
LServer, {bounce, Packet}, []);
|
|
false ->
|
|
Err = xmpp:err_service_unavailable(),
|
|
ejabberd_router:route_error(Packet, Err)
|
|
end
|
|
end.
|
|
|
|
-spec maybe_mark_as_copy(message(), binary(), binary(), integer(), integer())
|
|
-> message().
|
|
maybe_mark_as_copy(Packet, R, R, P, P) ->
|
|
Packet;
|
|
maybe_mark_as_copy(Packet, _, _, P, P) ->
|
|
xmpp:put_meta(Packet, sm_copy, true);
|
|
maybe_mark_as_copy(Packet, _, _, _, _) ->
|
|
Packet.
|
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
-spec clean_session_list([#session{}]) -> [#session{}].
|
|
clean_session_list(Ss) ->
|
|
clean_session_list(lists:keysort(#session.usr, Ss), []).
|
|
|
|
-spec clean_session_list([#session{}], [#session{}]) -> [#session{}].
|
|
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
|
|
-spec check_for_sessions_to_replace(binary(), binary(), binary()) -> ok | replaced.
|
|
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).
|
|
|
|
-spec check_existing_resources(binary(), binary(), binary()) -> ok.
|
|
check_existing_resources(LUser, LServer, LResource) ->
|
|
Mod = get_sm_backend(LServer),
|
|
Ss = get_sessions(Mod, LUser, LServer, LResource),
|
|
if Ss == [] -> ok;
|
|
true ->
|
|
SIDs = [SID || #session{sid = SID} <- Ss],
|
|
MaxSID = lists:max(SIDs),
|
|
lists:foreach(fun ({_, Pid} = S) when S /= MaxSID ->
|
|
ejabberd_c2s:route(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).
|
|
|
|
-spec get_resource_sessions(binary(), binary(), binary()) -> [sid()].
|
|
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 <- get_sessions(Mod, LUser, LServer, LResource)].
|
|
|
|
-spec check_max_sessions(binary(), binary()) -> ok | replaced.
|
|
check_max_sessions(LUser, LServer) ->
|
|
Mod = get_sm_backend(LServer),
|
|
Ss = get_sessions(Mod, LUser, LServer),
|
|
MaxSessions = get_max_user_sessions(LUser, LServer),
|
|
if length(Ss) =< MaxSessions -> ok;
|
|
true ->
|
|
#session{sid = {_, Pid}} = lists:min(Ss),
|
|
ejabberd_c2s:route(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
|
|
-spec get_max_user_sessions(binary(), binary()) -> infinity | non_neg_integer().
|
|
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.
|
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
-spec force_update_presence({binary(), binary()}) -> ok.
|
|
|
|
force_update_presence({LUser, LServer}) ->
|
|
Mod = get_sm_backend(LServer),
|
|
Ss = get_sessions(Mod, LUser, LServer),
|
|
lists:foreach(fun (#session{sid = {_, Pid}}) ->
|
|
ejabberd_c2s:resend_presence(Pid)
|
|
end,
|
|
Ss).
|
|
|
|
-spec get_sm_backend(binary()) -> module().
|
|
|
|
get_sm_backend(Host) ->
|
|
DBType = ejabberd_config:get_option(
|
|
{sm_db_type, Host},
|
|
ejabberd_config:default_ram_db(Host, ?MODULE)),
|
|
list_to_atom("ejabberd_sm_" ++ atom_to_list(DBType)).
|
|
|
|
-spec get_sm_backends() -> [module()].
|
|
|
|
get_sm_backends() ->
|
|
lists:usort([get_sm_backend(Host) || Host <- ejabberd_config:get_myhosts()]).
|
|
|
|
-spec get_vh_by_backend(module()) -> [binary()].
|
|
|
|
get_vh_by_backend(Mod) ->
|
|
lists:filter(
|
|
fun(Host) ->
|
|
get_sm_backend(Host) == Mod
|
|
end, ejabberd_config:get_myhosts()).
|
|
|
|
%%--------------------------------------------------------------------
|
|
%%% Cache stuff
|
|
%%--------------------------------------------------------------------
|
|
-spec init_cache() -> ok.
|
|
init_cache() ->
|
|
case use_cache() of
|
|
true ->
|
|
ets_cache:new(?SM_CACHE, cache_opts());
|
|
false ->
|
|
ets_cache:delete(?SM_CACHE)
|
|
end.
|
|
|
|
-spec cache_opts() -> [proplists:property()].
|
|
cache_opts() ->
|
|
MaxSize = ejabberd_config:get_option(
|
|
sm_cache_size,
|
|
ejabberd_config:cache_size(global)),
|
|
CacheMissed = ejabberd_config:get_option(
|
|
sm_cache_missed,
|
|
ejabberd_config:cache_missed(global)),
|
|
LifeTime = case ejabberd_config:get_option(
|
|
sm_cache_life_time,
|
|
ejabberd_config:cache_life_time(global)) of
|
|
infinity -> infinity;
|
|
I -> timer:seconds(I)
|
|
end,
|
|
[{max_size, MaxSize}, {cache_missed, CacheMissed}, {life_time, LifeTime}].
|
|
|
|
-spec clean_cache(node()) -> non_neg_integer().
|
|
clean_cache(Node) ->
|
|
ets_cache:filter(
|
|
?SM_CACHE,
|
|
fun(_, error) ->
|
|
false;
|
|
(_, {ok, Ss}) ->
|
|
not lists:any(
|
|
fun(#session{sid = {_, Pid}}) ->
|
|
node(Pid) == Node
|
|
end, Ss)
|
|
end).
|
|
|
|
-spec clean_cache() -> ok.
|
|
clean_cache() ->
|
|
ejabberd_cluster:eval_everywhere(?MODULE, clean_cache, [node()]).
|
|
|
|
-spec use_cache(module(), binary()) -> boolean().
|
|
use_cache(Mod, LServer) ->
|
|
case erlang:function_exported(Mod, use_cache, 1) of
|
|
true -> Mod:use_cache(LServer);
|
|
false ->
|
|
ejabberd_config:get_option(
|
|
{sm_use_cache, LServer},
|
|
ejabberd_config:use_cache(LServer))
|
|
end.
|
|
|
|
-spec use_cache() -> boolean().
|
|
use_cache() ->
|
|
lists:any(
|
|
fun(Host) ->
|
|
Mod = get_sm_backend(Host),
|
|
use_cache(Mod, Host)
|
|
end, ejabberd_config:get_myhosts()).
|
|
|
|
-spec cache_nodes(module(), binary()) -> [node()].
|
|
cache_nodes(Mod, LServer) ->
|
|
case erlang:function_exported(Mod, cache_nodes, 1) of
|
|
true -> Mod:cache_nodes(LServer);
|
|
false -> ejabberd_cluster:get_nodes()
|
|
end.
|
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
%%% 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_desc = "List of users sessions",
|
|
result_example = [<<"user1@example.com">>, <<"user2@example.com">>],
|
|
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,
|
|
result_example = 2,
|
|
args = [], result = {num_sessions, integer}},
|
|
#ejabberd_commands{name = user_resources, tags = [session],
|
|
desc = "List user's connected resources",
|
|
policy = admin,
|
|
module = ?MODULE, function = user_resources,
|
|
args = [{user, binary}, {host, binary}],
|
|
args_desc = ["User name", "Server name"],
|
|
args_example = [<<"user1">>, <<"example.com">>],
|
|
result_example = [<<"tka1">>, <<"Gajim">>, <<"mobile-app">>],
|
|
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}],
|
|
args_desc = ["User name", "Server name"],
|
|
args_example = [<<"user1">>, <<"example.com">>],
|
|
result_desc = "Number of resources that were kicked",
|
|
result_example = 3,
|
|
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).
|
|
|
|
-spec kick_user(binary(), binary()) -> non_neg_integer().
|
|
kick_user(User, Server) ->
|
|
Resources = get_user_resources(User, Server),
|
|
lists:foldl(
|
|
fun(Resource, Acc) ->
|
|
case kick_user(User, Server, Resource) of
|
|
false -> Acc;
|
|
true -> Acc + 1
|
|
end
|
|
end, 0, Resources).
|
|
|
|
-spec kick_user(binary(), binary(), binary()) -> boolean().
|
|
kick_user(User, Server, Resource) ->
|
|
case get_session_pid(User, Server, Resource) of
|
|
none -> false;
|
|
Pid -> ejabberd_c2s:route(Pid, kick)
|
|
end.
|
|
|
|
make_sid() ->
|
|
{p1_time_compat:unique_timestamp(), self()}.
|
|
|
|
-spec opt_type(atom()) -> fun((any()) -> any()) | [atom()].
|
|
opt_type(sm_db_type) -> fun(T) -> ejabberd_config:v_db(?MODULE, T) end;
|
|
opt_type(O) when O == sm_use_cache; O == sm_cache_missed ->
|
|
fun(B) when is_boolean(B) -> B end;
|
|
opt_type(O) when O == sm_cache_size; O == sm_cache_life_time ->
|
|
fun(I) when is_integer(I), I>0 -> I;
|
|
(unlimited) -> infinity;
|
|
(infinity) -> infinity
|
|
end;
|
|
opt_type(_) ->
|
|
[sm_db_type, sm_use_cache, sm_cache_size, sm_cache_missed,
|
|
sm_cache_life_time].
|