2016-12-28 07:47:11 +01:00
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%%%-------------------------------------------------------------------
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%%% Created : 12 Dec 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
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2007-12-24 12:41:41 +01:00
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%%%
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%%%
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2019-01-08 22:53:27 +01:00
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%%% ejabberd, Copyright (C) 2002-2019 ProcessOne
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2007-12-24 12:41:41 +01:00
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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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2009-01-12 15:44:42 +01:00
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%%%
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2014-02-22 11:27:40 +01:00
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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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2007-12-24 12:41:41 +01:00
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%%%
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2016-12-28 07:47:11 +01:00
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%%%-------------------------------------------------------------------
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2002-12-06 21:59:19 +01:00
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-module(ejabberd_s2s_in).
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2016-12-28 07:47:11 +01:00
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-behaviour(xmpp_stream_in).
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2018-09-17 10:21:02 +02:00
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-behaviour(ejabberd_listener).
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2015-06-01 14:38:27 +02:00
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2017-05-08 11:59:28 +02:00
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%% ejabberd_listener callbacks
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2019-06-14 11:33:26 +02:00
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-export([start/3, start_link/3, accept/1, listen_options/0]).
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2016-12-28 07:47:11 +01:00
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%% xmpp_stream_in callbacks
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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]).
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2018-07-10 09:14:08 +02:00
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-export([tls_options/1, tls_required/1, tls_enabled/1, compress_methods/1,
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2016-12-28 07:47:11 +01:00
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unauthenticated_stream_features/1, authenticated_stream_features/1,
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2016-12-29 22:00:36 +01:00
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handle_stream_start/2, handle_stream_end/2,
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2016-12-28 07:47:11 +01:00
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handle_stream_established/1, handle_auth_success/4,
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handle_auth_failure/4, handle_send/3, handle_recv/3, handle_cdata/2,
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handle_unauthenticated_packet/2, handle_authenticated_packet/2]).
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%% Hooks
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-export([handle_unexpected_info/2, handle_unexpected_cast/2,
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reject_unauthenticated_packet/2, process_closed/2]).
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%% API
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2017-04-15 07:30:41 +02:00
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-export([stop/1, close/1, close/2, send/2, update_state/2, establish/1,
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2017-02-23 08:12:19 +01:00
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host_up/1, host_down/1]).
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2002-12-06 21:59:19 +01:00
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2016-07-27 09:45:08 +02:00
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-include("xmpp.hrl").
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2016-12-28 07:47:11 +01:00
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-include("logger.hrl").
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2013-03-14 10:33:02 +01:00
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2019-06-22 09:19:17 +02:00
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-type state() :: xmpp_stream_in:state().
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2016-12-28 07:47:11 +01:00
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-export_type([state/0]).
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2011-12-02 19:30:20 +01:00
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2016-12-28 07:47:11 +01:00
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%%%===================================================================
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%%% API
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%%%===================================================================
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2019-04-01 15:53:28 +02:00
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start(SockMod, Socket, Opts) ->
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xmpp_stream_in:start(?MODULE, [{SockMod, Socket}, Opts],
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2018-09-17 10:21:02 +02:00
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ejabberd_config:fsm_limit_opts(Opts)).
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2003-07-20 22:35:35 +02:00
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2019-04-01 15:53:28 +02:00
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start_link(SockMod, Socket, Opts) ->
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xmpp_stream_in:start_link(?MODULE, [{SockMod, Socket}, Opts],
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2016-12-28 07:47:11 +01:00
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ejabberd_config:fsm_limit_opts(Opts)).
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close(Ref) ->
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xmpp_stream_in:close(Ref).
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2017-04-15 07:30:41 +02:00
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close(Ref, Reason) ->
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xmpp_stream_in:close(Ref, Reason).
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2016-12-28 07:47:11 +01:00
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stop(Ref) ->
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xmpp_stream_in:stop(Ref).
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2018-09-17 10:21:02 +02:00
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accept(Ref) ->
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xmpp_stream_in:accept(Ref).
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2016-12-28 07:47:11 +01:00
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-spec send(pid(), xmpp_element()) -> ok;
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(state(), xmpp_element()) -> state().
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send(Stream, Pkt) ->
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xmpp_stream_in:send(Stream, Pkt).
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-spec establish(state()) -> state().
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establish(State) ->
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xmpp_stream_in:establish(State).
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-spec update_state(pid(), fun((state()) -> state()) |
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{module(), atom(), list()}) -> ok.
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update_state(Ref, Callback) ->
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xmpp_stream_in:cast(Ref, {update_state, Callback}).
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2017-02-23 08:12:19 +01:00
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-spec host_up(binary()) -> ok.
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host_up(Host) ->
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ejabberd_hooks:add(s2s_in_closed, Host, ?MODULE,
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process_closed, 100),
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ejabberd_hooks:add(s2s_in_unauthenticated_packet, Host, ?MODULE,
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reject_unauthenticated_packet, 100),
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ejabberd_hooks:add(s2s_in_handle_info, Host, ?MODULE,
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handle_unexpected_info, 100),
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ejabberd_hooks:add(s2s_in_handle_cast, Host, ?MODULE,
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handle_unexpected_cast, 100).
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-spec host_down(binary()) -> ok.
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host_down(Host) ->
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ejabberd_hooks:delete(s2s_in_closed, Host, ?MODULE,
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process_closed, 100),
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ejabberd_hooks:delete(s2s_in_unauthenticated_packet, Host, ?MODULE,
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reject_unauthenticated_packet, 100),
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ejabberd_hooks:delete(s2s_in_handle_info, Host, ?MODULE,
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handle_unexpected_info, 100),
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ejabberd_hooks:delete(s2s_in_handle_cast, Host, ?MODULE,
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handle_unexpected_cast, 100).
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2016-12-28 07:47:11 +01:00
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%%%===================================================================
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%%% Hooks
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%%%===================================================================
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handle_unexpected_info(State, Info) ->
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2019-06-24 19:32:34 +02:00
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?WARNING_MSG("Unexpected info: ~p", [Info]),
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2016-12-28 07:47:11 +01:00
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State.
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handle_unexpected_cast(State, Msg) ->
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2019-06-24 19:32:34 +02:00
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?WARNING_MSG("Unexpected cast: ~p", [Msg]),
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2016-12-28 07:47:11 +01:00
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State.
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2017-01-13 09:35:47 +01:00
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reject_unauthenticated_packet(State, _Pkt) ->
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Err = xmpp:serr_not_authorized(),
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send(State, Err).
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2016-12-28 07:47:11 +01:00
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2018-08-29 16:23:56 +02:00
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process_closed(#{server := LServer} = State, Reason) ->
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RServer = case State of
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#{remote_server := Name} ->
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Name;
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#{ip := IP} ->
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ejabberd_config:may_hide_data(misc:ip_to_list(IP))
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end,
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?INFO_MSG("Closing inbound s2s connection ~s -> ~s: ~s",
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[RServer, LServer, xmpp_stream_out:format_error(Reason)]),
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2016-12-28 07:47:11 +01:00
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stop(State).
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%%%===================================================================
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%%% xmpp_stream_in callbacks
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%%%===================================================================
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2019-06-23 18:37:54 +02:00
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tls_options(#{tls_options := TLSOpts, server_host := ServerHost}) ->
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ejabberd_s2s:tls_options(ServerHost, TLSOpts).
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2016-12-28 07:47:11 +01:00
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2019-06-23 18:37:54 +02:00
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tls_required(#{server_host := ServerHost}) ->
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ejabberd_s2s:tls_required(ServerHost).
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2002-12-06 21:59:19 +01:00
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2019-06-23 18:37:54 +02:00
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tls_enabled(#{server_host := ServerHost}) ->
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ejabberd_s2s:tls_enabled(ServerHost).
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2002-12-06 21:59:19 +01:00
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2019-06-23 18:37:54 +02:00
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compress_methods(#{server_host := ServerHost}) ->
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case ejabberd_s2s:zlib_enabled(ServerHost) of
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2016-12-28 07:47:11 +01:00
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true -> [<<"zlib">>];
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false -> []
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end.
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unauthenticated_stream_features(#{server_host := LServer}) ->
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ejabberd_hooks:run_fold(s2s_in_pre_auth_features, LServer, [], [LServer]).
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authenticated_stream_features(#{server_host := LServer}) ->
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ejabberd_hooks:run_fold(s2s_in_post_auth_features, LServer, [], [LServer]).
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handle_stream_start(_StreamStart, #{lserver := LServer} = State) ->
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case check_to(jid:make(LServer), State) of
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false ->
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send(State, xmpp:serr_host_unknown());
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2017-05-24 17:16:16 +02:00
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true ->
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2016-12-28 07:47:11 +01:00
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ServerHost = ejabberd_router:host_of_route(LServer),
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2019-06-21 20:06:32 +02:00
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Opts = ejabberd_config:codec_options(),
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2018-02-09 16:12:50 +01:00
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State#{server_host => ServerHost, codec_options => Opts}
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2016-12-28 07:47:11 +01:00
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end.
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2019-06-23 18:37:54 +02:00
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handle_stream_end(Reason, #{server_host := ServerHost} = State) ->
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2017-03-07 16:46:02 +01:00
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State1 = State#{stop_reason => Reason},
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2019-06-23 18:37:54 +02:00
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ejabberd_hooks:run_fold(s2s_in_closed, ServerHost, State1, [Reason]).
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2016-12-28 07:47:11 +01:00
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handle_stream_established(State) ->
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set_idle_timeout(State#{established => true}).
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handle_auth_success(RServer, Mech, _AuthModule,
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2017-12-26 16:55:57 +01:00
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#{socket := Socket, ip := IP,
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2016-12-28 07:47:11 +01:00
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auth_domains := AuthDomains,
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server_host := ServerHost,
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lserver := LServer} = State) ->
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?INFO_MSG("(~s) Accepted inbound s2s ~s authentication ~s -> ~s (~s)",
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2017-12-26 16:55:57 +01:00
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[xmpp_socket:pp(Socket), Mech, RServer, LServer,
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2017-04-11 12:13:58 +02:00
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ejabberd_config:may_hide_data(misc:ip_to_list(IP))]),
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2019-06-24 20:18:57 +02:00
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State1 = case ejabberd_s2s:allow_host(ServerHost, RServer) of
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2017-05-24 17:16:16 +02:00
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true ->
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2016-12-28 07:47:11 +01:00
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AuthDomains1 = sets:add_element(RServer, AuthDomains),
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2017-12-26 16:55:57 +01:00
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State0 = change_shaper(State, RServer),
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State0#{auth_domains => AuthDomains1};
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2016-12-28 07:47:11 +01:00
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false ->
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State
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2018-10-15 23:03:53 +02:00
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end,
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2016-12-28 07:47:11 +01:00
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ejabberd_hooks:run_fold(s2s_in_auth_result, ServerHost, State1, [true, RServer]).
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handle_auth_failure(RServer, Mech, Reason,
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2017-12-26 16:55:57 +01:00
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#{socket := Socket, ip := IP,
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2016-12-28 07:47:11 +01:00
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server_host := ServerHost,
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lserver := LServer} = State) ->
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2018-09-19 22:12:14 +02:00
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?WARNING_MSG("(~s) Failed inbound s2s ~s authentication ~s -> ~s (~s): ~s",
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[xmpp_socket:pp(Socket), Mech, RServer, LServer,
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ejabberd_config:may_hide_data(misc:ip_to_list(IP)), Reason]),
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2016-12-28 07:47:11 +01:00
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ejabberd_hooks:run_fold(s2s_in_auth_result,
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ServerHost, State, [false, RServer]).
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2019-06-23 18:37:54 +02:00
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handle_unauthenticated_packet(Pkt, #{server_host := ServerHost} = State) ->
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2016-12-28 07:47:11 +01:00
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ejabberd_hooks:run_fold(s2s_in_unauthenticated_packet,
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2019-06-23 18:37:54 +02:00
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ServerHost, State, [Pkt]).
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2016-12-28 07:47:11 +01:00
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2019-06-23 18:37:54 +02:00
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handle_authenticated_packet(Pkt, #{server_host := ServerHost} = State) when not ?is_stanza(Pkt) ->
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ejabberd_hooks:run_fold(s2s_in_authenticated_packet, ServerHost, State, [Pkt]);
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2017-02-14 15:09:25 +01:00
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handle_authenticated_packet(Pkt0, #{ip := {IP, _}} = State) ->
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Pkt = xmpp:put_meta(Pkt0, ip, IP),
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2016-07-27 09:45:08 +02:00
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From = xmpp:get_from(Pkt),
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To = xmpp:get_to(Pkt),
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2016-12-28 07:47:11 +01:00
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case check_from_to(From, To, State) of
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ok ->
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LServer = ejabberd_router:host_of_route(To#jid.lserver),
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State1 = ejabberd_hooks:run_fold(s2s_in_authenticated_packet,
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LServer, State, [Pkt]),
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2017-01-09 15:02:17 +01:00
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{Pkt1, State2} = ejabberd_hooks:run_fold(s2s_receive_packet, LServer,
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{Pkt, State1}, []),
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case Pkt1 of
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drop -> ok;
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2017-02-16 09:00:26 +01:00
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_ -> ejabberd_router:route(Pkt1)
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2018-10-15 23:03:53 +02:00
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end,
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2017-01-09 15:02:17 +01:00
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State2;
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2016-12-28 07:47:11 +01:00
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{error, Err} ->
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send(State, Err)
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2011-12-02 19:30:20 +01:00
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end.
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2019-06-23 18:37:54 +02:00
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handle_cdata(Data, #{server_host := ServerHost} = State) ->
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ejabberd_hooks:run_fold(s2s_in_handle_cdata, ServerHost, State, [Data]).
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2016-12-28 07:47:11 +01:00
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2019-06-23 18:37:54 +02:00
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handle_recv(El, Pkt, #{server_host := ServerHost} = State) ->
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2016-12-28 07:47:11 +01:00
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State1 = set_idle_timeout(State),
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2019-06-23 18:37:54 +02:00
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ejabberd_hooks:run_fold(s2s_in_handle_recv, ServerHost, State1, [El, Pkt]).
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2016-12-28 07:47:11 +01:00
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2019-06-23 18:37:54 +02:00
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handle_send(Pkt, Result, #{server_host := ServerHost} = State) ->
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ejabberd_hooks:run_fold(s2s_in_handle_send, ServerHost,
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2016-12-28 07:47:11 +01:00
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State, [Pkt, Result]).
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init([State, Opts]) ->
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2017-05-08 13:34:35 +02:00
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Shaper = proplists:get_value(shaper, Opts, none),
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2017-01-09 15:02:17 +01:00
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TLSOpts1 = lists:filter(
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fun({certfile, _}) -> true;
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({ciphers, _}) -> true;
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({dhfile, _}) -> true;
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({cafile, _}) -> true;
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2017-04-30 18:01:47 +02:00
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({protocol_options, _}) -> true;
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2017-01-09 15:02:17 +01:00
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(_) -> false
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end, Opts),
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2017-04-30 18:01:47 +02:00
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TLSOpts2 = case proplists:get_bool(tls_compression, Opts) of
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2018-10-15 23:03:53 +02:00
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false -> [compression_none | TLSOpts1];
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true -> TLSOpts1
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end,
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2019-06-14 11:33:26 +02:00
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Timeout = ejabberd_option:negotiation_timeout(),
|
2017-04-30 18:01:47 +02:00
|
|
|
State1 = State#{tls_options => TLSOpts2,
|
2016-12-28 07:47:11 +01:00
|
|
|
auth_domains => sets:new(),
|
|
|
|
xmlns => ?NS_SERVER,
|
2019-06-14 11:33:26 +02:00
|
|
|
lang => ejabberd_option:language(),
|
2018-06-14 13:00:47 +02:00
|
|
|
server => ejabberd_config:get_myname(),
|
|
|
|
lserver => ejabberd_config:get_myname(),
|
|
|
|
server_host => ejabberd_config:get_myname(),
|
2016-12-28 07:47:11 +01:00
|
|
|
established => false,
|
|
|
|
shaper => Shaper},
|
2018-02-20 09:38:00 +01:00
|
|
|
State2 = xmpp_stream_in:set_timeout(State1, Timeout),
|
|
|
|
ejabberd_hooks:run_fold(s2s_in_init, {ok, State2}, [Opts]).
|
2016-12-28 07:47:11 +01:00
|
|
|
|
2019-06-23 18:37:54 +02:00
|
|
|
handle_call(Request, From, #{server_host := ServerHost} = State) ->
|
|
|
|
ejabberd_hooks:run_fold(s2s_in_handle_call, ServerHost, State, [Request, From]).
|
2016-12-28 07:47:11 +01:00
|
|
|
|
|
|
|
handle_cast({update_state, Fun}, State) ->
|
|
|
|
case Fun of
|
|
|
|
{M, F, A} -> erlang:apply(M, F, [State|A]);
|
|
|
|
_ when is_function(Fun) -> Fun(State)
|
|
|
|
end;
|
2019-06-23 18:37:54 +02:00
|
|
|
handle_cast(Msg, #{server_host := ServerHost} = State) ->
|
|
|
|
ejabberd_hooks:run_fold(s2s_in_handle_cast, ServerHost, State, [Msg]).
|
2002-12-07 21:27:26 +01:00
|
|
|
|
2019-06-23 18:37:54 +02:00
|
|
|
handle_info(Info, #{server_host := ServerHost} = State) ->
|
|
|
|
ejabberd_hooks:run_fold(s2s_in_handle_info, ServerHost, State, [Info]).
|
2016-12-28 07:47:11 +01:00
|
|
|
|
2017-03-07 16:46:02 +01:00
|
|
|
terminate(Reason, #{auth_domains := AuthDomains,
|
2017-12-26 16:55:57 +01:00
|
|
|
socket := Socket} = State) ->
|
2017-03-07 16:46:02 +01:00
|
|
|
case maps:get(stop_reason, State, undefined) of
|
2017-03-08 06:27:54 +01:00
|
|
|
{tls, _} = Err ->
|
2017-12-19 13:33:30 +01:00
|
|
|
?WARNING_MSG("(~s) Failed to secure inbound s2s connection: ~s",
|
2017-12-26 16:55:57 +01:00
|
|
|
[xmpp_socket:pp(Socket), xmpp_stream_in:format_error(Err)]);
|
2017-03-07 16:46:02 +01:00
|
|
|
_ ->
|
|
|
|
ok
|
|
|
|
end,
|
2011-12-02 19:30:20 +01:00
|
|
|
case Reason of
|
2013-03-14 10:33:02 +01:00
|
|
|
{process_limit, _} ->
|
2017-01-09 15:02:17 +01:00
|
|
|
sets:fold(
|
|
|
|
fun(Host, _) ->
|
|
|
|
ejabberd_s2s:external_host_overloaded(Host)
|
|
|
|
end, ok, AuthDomains);
|
|
|
|
_ ->
|
|
|
|
ok
|
2011-12-02 19:30:20 +01:00
|
|
|
end.
|
|
|
|
|
2016-12-28 07:47:11 +01:00
|
|
|
code_change(_OldVsn, State, _Extra) ->
|
|
|
|
{ok, State}.
|
2011-12-02 19:30:20 +01:00
|
|
|
|
2016-12-28 07:47:11 +01:00
|
|
|
%%%===================================================================
|
2002-12-06 21:59:19 +01:00
|
|
|
%%% Internal functions
|
2016-12-28 07:47:11 +01:00
|
|
|
%%%===================================================================
|
|
|
|
-spec check_from_to(jid(), jid(), state()) -> ok | {error, stream_error()}.
|
|
|
|
check_from_to(From, To, State) ->
|
|
|
|
case check_from(From, State) of
|
2017-05-24 17:16:16 +02:00
|
|
|
true ->
|
2016-12-28 07:47:11 +01:00
|
|
|
case check_to(To, State) of
|
2017-05-24 17:16:16 +02:00
|
|
|
true ->
|
2016-12-28 07:47:11 +01:00
|
|
|
ok;
|
2017-05-24 17:16:16 +02:00
|
|
|
false ->
|
2017-01-13 09:35:47 +01:00
|
|
|
{error, xmpp:serr_host_unknown()}
|
2017-05-24 17:16:16 +02:00
|
|
|
end;
|
2016-12-28 07:47:11 +01:00
|
|
|
false ->
|
|
|
|
{error, xmpp:serr_invalid_from()}
|
2016-07-27 09:45:08 +02:00
|
|
|
end.
|
|
|
|
|
2016-12-28 07:47:11 +01:00
|
|
|
-spec check_from(jid(), state()) -> boolean().
|
|
|
|
check_from(#jid{lserver = S1}, #{auth_domains := AuthDomains}) ->
|
|
|
|
sets:is_element(S1, AuthDomains).
|
|
|
|
|
|
|
|
-spec check_to(jid(), state()) -> boolean().
|
|
|
|
check_to(#jid{lserver = LServer}, _State) ->
|
|
|
|
ejabberd_router:is_my_route(LServer).
|
|
|
|
|
|
|
|
-spec set_idle_timeout(state()) -> state().
|
2019-06-23 18:37:54 +02:00
|
|
|
set_idle_timeout(#{server_host := ServerHost,
|
2016-12-28 07:47:11 +01:00
|
|
|
established := true} = State) ->
|
2019-06-23 18:37:54 +02:00
|
|
|
Timeout = ejabberd_s2s:get_idle_timeout(ServerHost),
|
2016-12-28 07:47:11 +01:00
|
|
|
xmpp_stream_in:set_timeout(State, Timeout);
|
|
|
|
set_idle_timeout(State) ->
|
|
|
|
State.
|
2015-06-01 14:38:27 +02:00
|
|
|
|
2017-12-26 16:55:57 +01:00
|
|
|
-spec change_shaper(state(), binary()) -> state().
|
2017-01-09 15:02:17 +01:00
|
|
|
change_shaper(#{shaper := ShaperName, server_host := ServerHost} = State,
|
|
|
|
RServer) ->
|
2019-06-14 11:33:26 +02:00
|
|
|
Shaper = ejabberd_shaper:match(ServerHost, ShaperName, jid:make(RServer)),
|
2018-07-06 00:07:36 +02:00
|
|
|
xmpp_stream_in:change_shaper(State, ejabberd_shaper:new(Shaper)).
|
2017-01-09 15:02:17 +01:00
|
|
|
|
2018-09-18 11:53:36 +02:00
|
|
|
listen_options() ->
|
|
|
|
[{shaper, none},
|
|
|
|
{ciphers, undefined},
|
|
|
|
{dhfile, undefined},
|
|
|
|
{cafile, undefined},
|
|
|
|
{protocol_options, undefined},
|
|
|
|
{tls, false},
|
|
|
|
{tls_compression, false},
|
|
|
|
{max_stanza_size, infinity},
|
|
|
|
{max_fsm_queue, 5000}].
|