mirror of
https://github.com/processone/ejabberd.git
synced 2024-11-22 16:20:52 +01:00
1375 lines
46 KiB
Erlang
1375 lines
46 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : ejabberd_s2s_out.erl
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%%% Author : Alexey Shchepin <alexey@process-one.net>
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%%% Purpose : Manage outgoing server-to-server connections
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%%% Created : 6 Dec 2002 by Alexey Shchepin <alexey@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2014 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_s2s_out).
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-author('alexey@process-one.net').
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-behaviour(p1_fsm).
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%% External exports
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-export([start/3,
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start_link/3,
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start_connection/1,
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terminate_if_waiting_delay/2,
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stop_connection/1,
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transform_options/1]).
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%% p1_fsm callbacks (same as gen_fsm)
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-export([init/1,
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open_socket/2,
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wait_for_stream/2,
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wait_for_validation/2,
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wait_for_features/2,
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wait_for_auth_result/2,
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wait_for_starttls_proceed/2,
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relay_to_bridge/2,
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reopen_socket/2,
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wait_before_retry/2,
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stream_established/2,
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handle_event/3,
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handle_sync_event/4,
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handle_info/3,
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terminate/3,
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print_state/1,
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code_change/4,
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test_get_addr_port/1,
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get_addr_port/1]).
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-include("ejabberd.hrl").
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-include("logger.hrl").
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-include("jlib.hrl").
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-record(state,
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{socket :: ejabberd_socket:socket_state(),
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streamid = <<"">> :: binary(),
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use_v10 = true :: boolean(),
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tls = false :: boolean(),
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tls_required = false :: boolean(),
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tls_certverify = false :: boolean(),
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tls_enabled = false :: boolean(),
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tls_options = [connect] :: list(),
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authenticated = false :: boolean(),
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db_enabled = true :: boolean(),
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try_auth = true :: boolean(),
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myname = <<"">> :: binary(),
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server = <<"">> :: binary(),
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queue = queue:new() :: queue(),
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delay_to_retry = undefined_delay :: undefined_delay | non_neg_integer(),
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new = false :: false | binary(),
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verify = false :: false | {pid(), binary(), binary()},
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bridge :: {atom(), atom()},
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timer = make_ref() :: reference()}).
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%%-define(DBGFSM, true).
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-ifdef(DBGFSM).
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-define(FSMOPTS, [{debug, [trace]}]).
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-else.
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-define(FSMOPTS, []).
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-endif.
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%% Module start with or without supervisor:
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-ifdef(NO_TRANSIENT_SUPERVISORS).
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-define(SUPERVISOR_START, p1_fsm:start(ejabberd_s2s_out, [From, Host, Type],
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fsm_limit_opts() ++ ?FSMOPTS)).
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-else.
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-define(SUPERVISOR_START, supervisor:start_child(ejabberd_s2s_out_sup,
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[From, Host, Type])).
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-endif.
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-define(FSMTIMEOUT, 30000).
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%% We do not block on send anymore.
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-define(TCP_SEND_TIMEOUT, 15000).
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%% Maximum delay to wait before retrying to connect after a failed attempt.
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%% Specified in miliseconds. Default value is 5 minutes.
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-define(MAX_RETRY_DELAY, 300000).
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-define(STREAM_HEADER,
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<<"<?xml version='1.0'?><stream:stream "
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"xmlns:stream='http://etherx.jabber.org/stream"
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"s' xmlns='jabber:server' xmlns:db='jabber:ser"
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"ver:dialback' from='~s' to='~s'~s>">>).
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-define(STREAM_TRAILER, <<"</stream:stream>">>).
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-define(INVALID_NAMESPACE_ERR,
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xml:element_to_binary(?SERR_INVALID_NAMESPACE)).
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-define(HOST_UNKNOWN_ERR,
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xml:element_to_binary(?SERR_HOST_UNKNOWN)).
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-define(INVALID_XML_ERR,
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xml:element_to_binary(?SERR_XML_NOT_WELL_FORMED)).
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-define(SOCKET_DEFAULT_RESULT, {error, badarg}).
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%%%----------------------------------------------------------------------
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%%% API
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%%%----------------------------------------------------------------------
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start(From, Host, Type) ->
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?SUPERVISOR_START.
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start_link(From, Host, Type) ->
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p1_fsm:start_link(ejabberd_s2s_out, [From, Host, Type],
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fsm_limit_opts() ++ (?FSMOPTS)).
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start_connection(Pid) -> p1_fsm:send_event(Pid, init).
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stop_connection(Pid) -> p1_fsm:send_event(Pid, closed).
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%%%----------------------------------------------------------------------
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%%% Callback functions from p1_fsm
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%%%----------------------------------------------------------------------
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%%----------------------------------------------------------------------
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%% Func: init/1
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%% Returns: {ok, StateName, StateData} |
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%% {ok, StateName, StateData, Timeout} |
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%% ignore |
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%% {stop, StopReason}
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%%----------------------------------------------------------------------
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init([From, Server, Type]) ->
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process_flag(trap_exit, true),
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?DEBUG("started: ~p", [{From, Server, Type}]),
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{TLS, TLSRequired, TLSCertverify} =
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case ejabberd_config:get_option(
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s2s_use_starttls,
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fun(true) -> true;
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(false) -> false;
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(optional) -> optional;
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(required) -> required;
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(required_trusted) -> required_trusted
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end)
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of
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UseTls
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when (UseTls == undefined) or (UseTls == false) ->
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{false, false, false};
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UseTls
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when (UseTls == true) or (UseTls == optional) ->
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{true, false, false};
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required ->
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{true, true, false};
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required_trusted ->
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{true, true, true}
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end,
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UseV10 = TLS,
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TLSOpts1 = case
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ejabberd_config:get_option(
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s2s_certfile, fun iolist_to_binary/1)
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of
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undefined -> [connect];
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CertFile -> [{certfile, CertFile}, connect]
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end,
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TLSOpts2 = case ejabberd_config:get_option(
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s2s_ciphers, fun iolist_to_binary/1) of
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undefined -> TLSOpts1;
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Ciphers -> [{ciphers, Ciphers} | TLSOpts1]
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end,
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TLSOpts3 = case ejabberd_config:get_option(
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s2s_protocol_options,
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fun (Options) ->
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[_|O] = lists:foldl(
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fun(X, Acc) -> X ++ Acc end, [],
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[["|" | binary_to_list(Opt)] || Opt <- Options, is_binary(Opt)]
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),
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iolist_to_binary(O)
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end) of
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undefined -> TLSOpts2;
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ProtocolOpts -> [{protocol_options, ProtocolOpts} | TLSOpts2]
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end,
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TLSOpts = case ejabberd_config:get_option(
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{s2s_tls_compression, From},
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fun(true) -> true;
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(false) -> false
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end, true) of
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false -> [compression_none | TLSOpts3];
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true -> TLSOpts3
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end,
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{New, Verify} = case Type of
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{new, Key} -> {Key, false};
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{verify, Pid, Key, SID} ->
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start_connection(self()), {false, {Pid, Key, SID}}
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end,
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Timer = erlang:start_timer(?S2STIMEOUT, self(), []),
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{ok, open_socket,
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#state{use_v10 = UseV10, tls = TLS,
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tls_required = TLSRequired, tls_certverify = TLSCertverify,
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tls_options = TLSOpts, queue = queue:new(), myname = From,
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server = Server, new = New, verify = Verify, timer = Timer}}.
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%%----------------------------------------------------------------------
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%% Func: StateName/2
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%% Returns: {next_state, NextStateName, NextStateData} |
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%% {next_state, NextStateName, NextStateData, Timeout} |
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%% {stop, Reason, NewStateData}
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%%----------------------------------------------------------------------
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open_socket(init, StateData) ->
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log_s2s_out(StateData#state.new, StateData#state.myname,
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StateData#state.server, StateData#state.tls),
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?DEBUG("open_socket: ~p",
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[{StateData#state.myname, StateData#state.server,
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StateData#state.new, StateData#state.verify}]),
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AddrList = case
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idna:domain_utf8_to_ascii(StateData#state.server)
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of
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false -> [];
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ASCIIAddr -> get_addr_port(ASCIIAddr)
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end,
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case lists:foldl(fun ({Addr, Port}, Acc) ->
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case Acc of
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{ok, Socket} -> {ok, Socket};
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_ -> open_socket1(Addr, Port)
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end
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end,
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?SOCKET_DEFAULT_RESULT, AddrList)
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of
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{ok, Socket} ->
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Version = if StateData#state.use_v10 ->
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<<" version='1.0'">>;
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true -> <<"">>
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end,
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NewStateData = StateData#state{socket = Socket,
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tls_enabled = false,
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streamid = new_id()},
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send_text(NewStateData,
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io_lib:format(?STREAM_HEADER,
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[StateData#state.myname,
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StateData#state.server, Version])),
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{next_state, wait_for_stream, NewStateData,
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?FSMTIMEOUT};
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{error, _Reason} ->
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?INFO_MSG("s2s connection: ~s -> ~s (remote server "
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"not found)",
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[StateData#state.myname, StateData#state.server]),
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case ejabberd_hooks:run_fold(find_s2s_bridge, undefined,
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[StateData#state.myname,
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StateData#state.server])
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of
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{Mod, Fun, Type} ->
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?INFO_MSG("found a bridge to ~s for: ~s -> ~s",
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[Type, StateData#state.myname,
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StateData#state.server]),
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NewStateData = StateData#state{bridge = {Mod, Fun}},
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{next_state, relay_to_bridge, NewStateData};
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_ -> wait_before_reconnect(StateData)
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end
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end;
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open_socket(closed, StateData) ->
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?INFO_MSG("s2s connection: ~s -> ~s (stopped in "
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"open socket)",
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[StateData#state.myname, StateData#state.server]),
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{stop, normal, StateData};
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open_socket(timeout, StateData) ->
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?INFO_MSG("s2s connection: ~s -> ~s (timeout in "
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"open socket)",
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[StateData#state.myname, StateData#state.server]),
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{stop, normal, StateData};
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open_socket(_, StateData) ->
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{next_state, open_socket, StateData}.
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%%----------------------------------------------------------------------
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%% IPv4
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open_socket1({_, _, _, _} = Addr, Port) ->
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open_socket2(inet, Addr, Port);
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%% IPv6
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open_socket1({_, _, _, _, _, _, _, _} = Addr, Port) ->
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open_socket2(inet6, Addr, Port);
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%% Hostname
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open_socket1(Host, Port) ->
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lists:foldl(fun (_Family, {ok, _Socket} = R) -> R;
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(Family, _) ->
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Addrs = get_addrs(Host, Family),
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lists:foldl(fun (_Addr, {ok, _Socket} = R) -> R;
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(Addr, _) -> open_socket1(Addr, Port)
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end,
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?SOCKET_DEFAULT_RESULT, Addrs)
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end,
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?SOCKET_DEFAULT_RESULT, outgoing_s2s_families()).
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open_socket2(Type, Addr, Port) ->
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?DEBUG("s2s_out: connecting to ~p:~p~n", [Addr, Port]),
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Timeout = outgoing_s2s_timeout(),
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SockOpts = try erlang:system_info(otp_release) >= "R13B"
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of
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true -> [{send_timeout_close, true}];
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false -> []
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catch
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_:_ -> []
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end,
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case catch ejabberd_socket:connect(Addr, Port,
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[binary, {packet, 0},
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{send_timeout, ?TCP_SEND_TIMEOUT},
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{active, false}, Type
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| SockOpts],
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Timeout)
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of
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{ok, _Socket} = R -> R;
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{error, Reason} = R ->
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?DEBUG("s2s_out: connect return ~p~n", [Reason]), R;
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{'EXIT', Reason} ->
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?DEBUG("s2s_out: connect crashed ~p~n", [Reason]),
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{error, Reason}
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end.
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%%----------------------------------------------------------------------
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wait_for_stream({xmlstreamstart, _Name, Attrs},
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StateData) ->
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{CertCheckRes, CertCheckMsg, NewStateData} =
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if StateData#state.tls_certverify, StateData#state.tls_enabled ->
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{Res, Msg} =
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ejabberd_s2s:check_peer_certificate(ejabberd_socket,
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StateData#state.socket,
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StateData#state.server),
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?DEBUG("Certificate verification result for ~s: ~s",
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[StateData#state.server, Msg]),
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{Res, Msg, StateData#state{tls_certverify = false}};
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true ->
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{no_verify, <<"Not verified">>, StateData}
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end,
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case {xml:get_attr_s(<<"xmlns">>, Attrs),
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xml:get_attr_s(<<"xmlns:db">>, Attrs),
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xml:get_attr_s(<<"version">>, Attrs) == <<"1.0">>}
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of
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_ when CertCheckRes == error ->
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send_text(NewStateData,
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<<(xml:element_to_binary(?SERRT_POLICY_VIOLATION(<<"en">>,
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CertCheckMsg)))/binary,
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(?STREAM_TRAILER)/binary>>),
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?INFO_MSG("Closing s2s connection: ~s -> ~s (~s)",
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[NewStateData#state.myname,
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NewStateData#state.server,
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CertCheckMsg]),
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{stop, normal, NewStateData};
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{<<"jabber:server">>, <<"jabber:server:dialback">>,
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false} ->
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send_db_request(NewStateData);
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{<<"jabber:server">>, <<"jabber:server:dialback">>,
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true}
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when NewStateData#state.use_v10 ->
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{next_state, wait_for_features, NewStateData, ?FSMTIMEOUT};
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%% Clause added to handle Tigase's workaround for an old ejabberd bug:
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{<<"jabber:server">>, <<"jabber:server:dialback">>,
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true}
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when not NewStateData#state.use_v10 ->
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send_db_request(NewStateData);
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{<<"jabber:server">>, <<"">>, true}
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when NewStateData#state.use_v10 ->
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{next_state, wait_for_features,
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NewStateData#state{db_enabled = false}, ?FSMTIMEOUT};
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{NSProvided, DB, _} ->
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send_text(NewStateData, ?INVALID_NAMESPACE_ERR),
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?INFO_MSG("Closing s2s connection: ~s -> ~s (invalid "
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"namespace).~nNamespace provided: ~p~nNamespac"
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"e expected: \"jabber:server\"~nxmlns:db "
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"provided: ~p~nAll attributes: ~p",
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[NewStateData#state.myname, NewStateData#state.server,
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NSProvided, DB, Attrs]),
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{stop, normal, NewStateData}
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end;
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wait_for_stream({xmlstreamerror, _}, StateData) ->
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send_text(StateData,
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<<(?INVALID_XML_ERR)/binary,
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(?STREAM_TRAILER)/binary>>),
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?INFO_MSG("Closing s2s connection: ~s -> ~s (invalid "
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"xml)",
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[StateData#state.myname, StateData#state.server]),
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{stop, normal, StateData};
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wait_for_stream({xmlstreamend, _Name}, StateData) ->
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?INFO_MSG("Closing s2s connection: ~s -> ~s (xmlstreamend)",
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[StateData#state.myname, StateData#state.server]),
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{stop, normal, StateData};
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wait_for_stream(timeout, StateData) ->
|
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?INFO_MSG("Closing s2s connection: ~s -> ~s (timeout "
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"in wait_for_stream)",
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[StateData#state.myname, StateData#state.server]),
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{stop, normal, StateData};
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wait_for_stream(closed, StateData) ->
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?INFO_MSG("Closing s2s connection: ~s -> ~s (close "
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"in wait_for_stream)",
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[StateData#state.myname, StateData#state.server]),
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{stop, normal, StateData}.
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wait_for_validation({xmlstreamelement, El},
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StateData) ->
|
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case is_verify_res(El) of
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{result, To, From, Id, Type} ->
|
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?DEBUG("recv result: ~p", [{From, To, Id, Type}]),
|
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case {Type, StateData#state.tls_enabled,
|
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StateData#state.tls_required}
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of
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{<<"valid">>, Enabled, Required}
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when (Enabled == true) or (Required == false) ->
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send_queue(StateData, StateData#state.queue),
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?INFO_MSG("Connection established: ~s -> ~s with "
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"TLS=~p",
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[StateData#state.myname, StateData#state.server,
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StateData#state.tls_enabled]),
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ejabberd_hooks:run(s2s_connect_hook,
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[StateData#state.myname,
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StateData#state.server]),
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{next_state, stream_established,
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StateData#state{queue = queue:new()}};
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{<<"valid">>, Enabled, Required}
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when (Enabled == false) and (Required == true) ->
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?INFO_MSG("Closing s2s connection: ~s -> ~s (TLS "
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"is required but unavailable)",
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[StateData#state.myname, StateData#state.server]),
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{stop, normal, StateData};
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_ ->
|
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?INFO_MSG("Closing s2s connection: ~s -> ~s (invalid "
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"dialback key)",
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[StateData#state.myname, StateData#state.server]),
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{stop, normal, StateData}
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end;
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{verify, To, From, Id, Type} ->
|
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?DEBUG("recv verify: ~p", [{From, To, Id, Type}]),
|
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case StateData#state.verify of
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false ->
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NextState = wait_for_validation,
|
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{next_state, NextState, StateData,
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get_timeout_interval(NextState)};
|
|
{Pid, _Key, _SID} ->
|
|
case Type of
|
|
<<"valid">> ->
|
|
p1_fsm:send_event(Pid,
|
|
{valid, StateData#state.server,
|
|
StateData#state.myname});
|
|
_ ->
|
|
p1_fsm:send_event(Pid,
|
|
{invalid, StateData#state.server,
|
|
StateData#state.myname})
|
|
end,
|
|
if StateData#state.verify == false ->
|
|
{stop, normal, StateData};
|
|
true ->
|
|
NextState = wait_for_validation,
|
|
{next_state, NextState, StateData,
|
|
get_timeout_interval(NextState)}
|
|
end
|
|
end;
|
|
_ ->
|
|
{next_state, wait_for_validation, StateData,
|
|
(?FSMTIMEOUT) * 3}
|
|
end;
|
|
wait_for_validation({xmlstreamend, _Name}, StateData) ->
|
|
?INFO_MSG("wait for validation: ~s -> ~s (xmlstreamend)",
|
|
[StateData#state.myname, StateData#state.server]),
|
|
{stop, normal, StateData};
|
|
wait_for_validation({xmlstreamerror, _}, StateData) ->
|
|
?INFO_MSG("wait for validation: ~s -> ~s (xmlstreamerror)",
|
|
[StateData#state.myname, StateData#state.server]),
|
|
send_text(StateData,
|
|
<<(?INVALID_XML_ERR)/binary,
|
|
(?STREAM_TRAILER)/binary>>),
|
|
{stop, normal, StateData};
|
|
wait_for_validation(timeout,
|
|
#state{verify = {VPid, VKey, SID}} = StateData)
|
|
when is_pid(VPid) and is_binary(VKey) and
|
|
is_binary(SID) ->
|
|
?DEBUG("wait_for_validation: ~s -> ~s (timeout "
|
|
"in verify connection)",
|
|
[StateData#state.myname, StateData#state.server]),
|
|
{stop, normal, StateData};
|
|
wait_for_validation(timeout, StateData) ->
|
|
?INFO_MSG("wait_for_validation: ~s -> ~s (connect "
|
|
"timeout)",
|
|
[StateData#state.myname, StateData#state.server]),
|
|
{stop, normal, StateData};
|
|
wait_for_validation(closed, StateData) ->
|
|
?INFO_MSG("wait for validation: ~s -> ~s (closed)",
|
|
[StateData#state.myname, StateData#state.server]),
|
|
{stop, normal, StateData}.
|
|
|
|
wait_for_features({xmlstreamelement, El}, StateData) ->
|
|
case El of
|
|
#xmlel{name = <<"stream:features">>, children = Els} ->
|
|
{SASLEXT, StartTLS, StartTLSRequired} = lists:foldl(fun
|
|
(#xmlel{name =
|
|
<<"mechanisms">>,
|
|
attrs =
|
|
Attrs1,
|
|
children
|
|
=
|
|
Els1} =
|
|
_El1,
|
|
{_SEXT, STLS,
|
|
STLSReq} =
|
|
Acc) ->
|
|
case
|
|
xml:get_attr_s(<<"xmlns">>,
|
|
Attrs1)
|
|
of
|
|
?NS_SASL ->
|
|
NewSEXT =
|
|
lists:any(fun
|
|
(#xmlel{name
|
|
=
|
|
<<"mechanism">>,
|
|
children
|
|
=
|
|
Els2}) ->
|
|
case
|
|
xml:get_cdata(Els2)
|
|
of
|
|
<<"EXTERNAL">> ->
|
|
true;
|
|
_ ->
|
|
false
|
|
end;
|
|
(_) ->
|
|
false
|
|
end,
|
|
Els1),
|
|
{NewSEXT,
|
|
STLS,
|
|
STLSReq};
|
|
_ -> Acc
|
|
end;
|
|
(#xmlel{name =
|
|
<<"starttls">>,
|
|
attrs =
|
|
Attrs1} =
|
|
El1,
|
|
{SEXT, _STLS,
|
|
_STLSReq} =
|
|
Acc) ->
|
|
case
|
|
xml:get_attr_s(<<"xmlns">>,
|
|
Attrs1)
|
|
of
|
|
?NS_TLS ->
|
|
Req =
|
|
case
|
|
xml:get_subtag(El1,
|
|
<<"required">>)
|
|
of
|
|
#xmlel{} ->
|
|
true;
|
|
false ->
|
|
false
|
|
end,
|
|
{SEXT,
|
|
true,
|
|
Req};
|
|
_ -> Acc
|
|
end;
|
|
(_, Acc) -> Acc
|
|
end,
|
|
{false, false,
|
|
false},
|
|
Els),
|
|
if not SASLEXT and not StartTLS and
|
|
StateData#state.authenticated ->
|
|
send_queue(StateData, StateData#state.queue),
|
|
?INFO_MSG("Connection established: ~s -> ~s with "
|
|
"SASL EXTERNAL and TLS=~p",
|
|
[StateData#state.myname, StateData#state.server,
|
|
StateData#state.tls_enabled]),
|
|
ejabberd_hooks:run(s2s_connect_hook,
|
|
[StateData#state.myname,
|
|
StateData#state.server]),
|
|
{next_state, stream_established,
|
|
StateData#state{queue = queue:new()}};
|
|
SASLEXT and StateData#state.try_auth and
|
|
(StateData#state.new /= false) and
|
|
(StateData#state.tls_enabled or
|
|
not StateData#state.tls_required) ->
|
|
send_element(StateData,
|
|
#xmlel{name = <<"auth">>,
|
|
attrs =
|
|
[{<<"xmlns">>, ?NS_SASL},
|
|
{<<"mechanism">>, <<"EXTERNAL">>}],
|
|
children =
|
|
[{xmlcdata,
|
|
jlib:encode_base64(StateData#state.myname)}]}),
|
|
{next_state, wait_for_auth_result,
|
|
StateData#state{try_auth = false}, ?FSMTIMEOUT};
|
|
StartTLS and StateData#state.tls and
|
|
not StateData#state.tls_enabled ->
|
|
send_element(StateData,
|
|
#xmlel{name = <<"starttls">>,
|
|
attrs = [{<<"xmlns">>, ?NS_TLS}],
|
|
children = []}),
|
|
{next_state, wait_for_starttls_proceed, StateData,
|
|
?FSMTIMEOUT};
|
|
StartTLSRequired and not StateData#state.tls ->
|
|
?DEBUG("restarted: ~p",
|
|
[{StateData#state.myname, StateData#state.server}]),
|
|
ejabberd_socket:close(StateData#state.socket),
|
|
{next_state, reopen_socket,
|
|
StateData#state{socket = undefined, use_v10 = false},
|
|
?FSMTIMEOUT};
|
|
StateData#state.db_enabled ->
|
|
send_db_request(StateData);
|
|
true ->
|
|
?DEBUG("restarted: ~p",
|
|
[{StateData#state.myname, StateData#state.server}]),
|
|
ejabberd_socket:close(StateData#state.socket),
|
|
{next_state, reopen_socket,
|
|
StateData#state{socket = undefined, use_v10 = false},
|
|
?FSMTIMEOUT}
|
|
end;
|
|
_ ->
|
|
send_text(StateData,
|
|
<<(xml:element_to_binary(?SERR_BAD_FORMAT))/binary,
|
|
(?STREAM_TRAILER)/binary>>),
|
|
?INFO_MSG("Closing s2s connection: ~s -> ~s (bad "
|
|
"format)",
|
|
[StateData#state.myname, StateData#state.server]),
|
|
{stop, normal, StateData}
|
|
end;
|
|
wait_for_features({xmlstreamend, _Name}, StateData) ->
|
|
?INFO_MSG("wait_for_features: xmlstreamend", []),
|
|
{stop, normal, StateData};
|
|
wait_for_features({xmlstreamerror, _}, StateData) ->
|
|
send_text(StateData,
|
|
<<(?INVALID_XML_ERR)/binary,
|
|
(?STREAM_TRAILER)/binary>>),
|
|
?INFO_MSG("wait for features: xmlstreamerror", []),
|
|
{stop, normal, StateData};
|
|
wait_for_features(timeout, StateData) ->
|
|
?INFO_MSG("wait for features: timeout", []),
|
|
{stop, normal, StateData};
|
|
wait_for_features(closed, StateData) ->
|
|
?INFO_MSG("wait for features: closed", []),
|
|
{stop, normal, StateData}.
|
|
|
|
wait_for_auth_result({xmlstreamelement, El},
|
|
StateData) ->
|
|
case El of
|
|
#xmlel{name = <<"success">>, attrs = Attrs} ->
|
|
case xml:get_attr_s(<<"xmlns">>, Attrs) of
|
|
?NS_SASL ->
|
|
?DEBUG("auth: ~p",
|
|
[{StateData#state.myname, StateData#state.server}]),
|
|
ejabberd_socket:reset_stream(StateData#state.socket),
|
|
send_text(StateData,
|
|
io_lib:format(?STREAM_HEADER,
|
|
[StateData#state.myname,
|
|
StateData#state.server,
|
|
<<" version='1.0'">>])),
|
|
{next_state, wait_for_stream,
|
|
StateData#state{streamid = new_id(),
|
|
authenticated = true},
|
|
?FSMTIMEOUT};
|
|
_ ->
|
|
send_text(StateData,
|
|
<<(xml:element_to_binary(?SERR_BAD_FORMAT))/binary,
|
|
(?STREAM_TRAILER)/binary>>),
|
|
?INFO_MSG("Closing s2s connection: ~s -> ~s (bad "
|
|
"format)",
|
|
[StateData#state.myname, StateData#state.server]),
|
|
{stop, normal, StateData}
|
|
end;
|
|
#xmlel{name = <<"failure">>, attrs = Attrs} ->
|
|
case xml:get_attr_s(<<"xmlns">>, Attrs) of
|
|
?NS_SASL ->
|
|
?DEBUG("restarted: ~p",
|
|
[{StateData#state.myname, StateData#state.server}]),
|
|
ejabberd_socket:close(StateData#state.socket),
|
|
{next_state, reopen_socket,
|
|
StateData#state{socket = undefined}, ?FSMTIMEOUT};
|
|
_ ->
|
|
send_text(StateData,
|
|
<<(xml:element_to_binary(?SERR_BAD_FORMAT))/binary,
|
|
(?STREAM_TRAILER)/binary>>),
|
|
?INFO_MSG("Closing s2s connection: ~s -> ~s (bad "
|
|
"format)",
|
|
[StateData#state.myname, StateData#state.server]),
|
|
{stop, normal, StateData}
|
|
end;
|
|
_ ->
|
|
send_text(StateData,
|
|
<<(xml:element_to_binary(?SERR_BAD_FORMAT))/binary,
|
|
(?STREAM_TRAILER)/binary>>),
|
|
?INFO_MSG("Closing s2s connection: ~s -> ~s (bad "
|
|
"format)",
|
|
[StateData#state.myname, StateData#state.server]),
|
|
{stop, normal, StateData}
|
|
end;
|
|
wait_for_auth_result({xmlstreamend, _Name},
|
|
StateData) ->
|
|
?INFO_MSG("wait for auth result: xmlstreamend", []),
|
|
{stop, normal, StateData};
|
|
wait_for_auth_result({xmlstreamerror, _}, StateData) ->
|
|
send_text(StateData,
|
|
<<(?INVALID_XML_ERR)/binary,
|
|
(?STREAM_TRAILER)/binary>>),
|
|
?INFO_MSG("wait for auth result: xmlstreamerror", []),
|
|
{stop, normal, StateData};
|
|
wait_for_auth_result(timeout, StateData) ->
|
|
?INFO_MSG("wait for auth result: timeout", []),
|
|
{stop, normal, StateData};
|
|
wait_for_auth_result(closed, StateData) ->
|
|
?INFO_MSG("wait for auth result: closed", []),
|
|
{stop, normal, StateData}.
|
|
|
|
wait_for_starttls_proceed({xmlstreamelement, El},
|
|
StateData) ->
|
|
case El of
|
|
#xmlel{name = <<"proceed">>, attrs = Attrs} ->
|
|
case xml:get_attr_s(<<"xmlns">>, Attrs) of
|
|
?NS_TLS ->
|
|
?DEBUG("starttls: ~p",
|
|
[{StateData#state.myname, StateData#state.server}]),
|
|
Socket = StateData#state.socket,
|
|
TLSOpts = case
|
|
ejabberd_config:get_option(
|
|
{domain_certfile, StateData#state.myname},
|
|
fun iolist_to_binary/1)
|
|
of
|
|
undefined -> StateData#state.tls_options;
|
|
CertFile ->
|
|
[{certfile, CertFile}
|
|
| lists:keydelete(certfile, 1,
|
|
StateData#state.tls_options)]
|
|
end,
|
|
TLSSocket = ejabberd_socket:starttls(Socket, TLSOpts),
|
|
NewStateData = StateData#state{socket = TLSSocket,
|
|
streamid = new_id(),
|
|
tls_enabled = true,
|
|
tls_options = TLSOpts},
|
|
send_text(NewStateData,
|
|
io_lib:format(?STREAM_HEADER,
|
|
[NewStateData#state.myname,
|
|
NewStateData#state.server,
|
|
<<" version='1.0'">>])),
|
|
{next_state, wait_for_stream, NewStateData,
|
|
?FSMTIMEOUT};
|
|
_ ->
|
|
send_text(StateData,
|
|
<<(xml:element_to_binary(?SERR_BAD_FORMAT))/binary,
|
|
(?STREAM_TRAILER)/binary>>),
|
|
?INFO_MSG("Closing s2s connection: ~s -> ~s (bad "
|
|
"format)",
|
|
[StateData#state.myname, StateData#state.server]),
|
|
{stop, normal, StateData}
|
|
end;
|
|
_ ->
|
|
?INFO_MSG("Closing s2s connection: ~s -> ~s (bad "
|
|
"format)",
|
|
[StateData#state.myname, StateData#state.server]),
|
|
{stop, normal, StateData}
|
|
end;
|
|
wait_for_starttls_proceed({xmlstreamend, _Name},
|
|
StateData) ->
|
|
?INFO_MSG("wait for starttls proceed: xmlstreamend",
|
|
[]),
|
|
{stop, normal, StateData};
|
|
wait_for_starttls_proceed({xmlstreamerror, _},
|
|
StateData) ->
|
|
send_text(StateData,
|
|
<<(?INVALID_XML_ERR)/binary,
|
|
(?STREAM_TRAILER)/binary>>),
|
|
?INFO_MSG("wait for starttls proceed: xmlstreamerror",
|
|
[]),
|
|
{stop, normal, StateData};
|
|
wait_for_starttls_proceed(timeout, StateData) ->
|
|
?INFO_MSG("wait for starttls proceed: timeout", []),
|
|
{stop, normal, StateData};
|
|
wait_for_starttls_proceed(closed, StateData) ->
|
|
?INFO_MSG("wait for starttls proceed: closed", []),
|
|
{stop, normal, StateData}.
|
|
|
|
reopen_socket({xmlstreamelement, _El}, StateData) ->
|
|
{next_state, reopen_socket, StateData, ?FSMTIMEOUT};
|
|
reopen_socket({xmlstreamend, _Name}, StateData) ->
|
|
{next_state, reopen_socket, StateData, ?FSMTIMEOUT};
|
|
reopen_socket({xmlstreamerror, _}, StateData) ->
|
|
{next_state, reopen_socket, StateData, ?FSMTIMEOUT};
|
|
reopen_socket(timeout, StateData) ->
|
|
?INFO_MSG("reopen socket: timeout", []),
|
|
{stop, normal, StateData};
|
|
reopen_socket(closed, StateData) ->
|
|
p1_fsm:send_event(self(), init),
|
|
{next_state, open_socket, StateData, ?FSMTIMEOUT}.
|
|
|
|
%% This state is use to avoid reconnecting to often to bad sockets
|
|
wait_before_retry(_Event, StateData) ->
|
|
{next_state, wait_before_retry, StateData, ?FSMTIMEOUT}.
|
|
|
|
relay_to_bridge(stop, StateData) ->
|
|
wait_before_reconnect(StateData);
|
|
relay_to_bridge(closed, StateData) ->
|
|
?INFO_MSG("relay to bridge: ~s -> ~s (closed)",
|
|
[StateData#state.myname, StateData#state.server]),
|
|
{stop, normal, StateData};
|
|
relay_to_bridge(_Event, StateData) ->
|
|
{next_state, relay_to_bridge, StateData}.
|
|
|
|
stream_established({xmlstreamelement, El}, StateData) ->
|
|
?DEBUG("s2S stream established", []),
|
|
case is_verify_res(El) of
|
|
{verify, VTo, VFrom, VId, VType} ->
|
|
?DEBUG("recv verify: ~p", [{VFrom, VTo, VId, VType}]),
|
|
case StateData#state.verify of
|
|
{VPid, _VKey, _SID} ->
|
|
case VType of
|
|
<<"valid">> ->
|
|
p1_fsm:send_event(VPid,
|
|
{valid, StateData#state.server,
|
|
StateData#state.myname});
|
|
_ ->
|
|
p1_fsm:send_event(VPid,
|
|
{invalid, StateData#state.server,
|
|
StateData#state.myname})
|
|
end;
|
|
_ -> ok
|
|
end;
|
|
_ -> ok
|
|
end,
|
|
{next_state, stream_established, StateData};
|
|
stream_established({xmlstreamend, _Name}, StateData) ->
|
|
?INFO_MSG("Connection closed in stream established: "
|
|
"~s -> ~s (xmlstreamend)",
|
|
[StateData#state.myname, StateData#state.server]),
|
|
{stop, normal, StateData};
|
|
stream_established({xmlstreamerror, _}, StateData) ->
|
|
send_text(StateData,
|
|
<<(?INVALID_XML_ERR)/binary,
|
|
(?STREAM_TRAILER)/binary>>),
|
|
?INFO_MSG("stream established: ~s -> ~s (xmlstreamerror)",
|
|
[StateData#state.myname, StateData#state.server]),
|
|
{stop, normal, StateData};
|
|
stream_established(timeout, StateData) ->
|
|
?INFO_MSG("stream established: ~s -> ~s (timeout)",
|
|
[StateData#state.myname, StateData#state.server]),
|
|
{stop, normal, StateData};
|
|
stream_established(closed, StateData) ->
|
|
?INFO_MSG("stream established: ~s -> ~s (closed)",
|
|
[StateData#state.myname, StateData#state.server]),
|
|
{stop, normal, StateData}.
|
|
|
|
%%----------------------------------------------------------------------
|
|
%% Func: StateName/3
|
|
%% Returns: {next_state, NextStateName, NextStateData} |
|
|
%% {next_state, NextStateName, NextStateData, Timeout} |
|
|
%% {reply, Reply, NextStateName, NextStateData} |
|
|
%% {reply, Reply, NextStateName, NextStateData, Timeout} |
|
|
%% {stop, Reason, NewStateData} |
|
|
%% {stop, Reason, Reply, NewStateData}
|
|
%%----------------------------------------------------------------------
|
|
%%state_name(Event, From, StateData) ->
|
|
%% Reply = ok,
|
|
%% {reply, Reply, state_name, StateData}.
|
|
|
|
%%----------------------------------------------------------------------
|
|
%% Func: handle_event/3
|
|
%% Returns: {next_state, NextStateName, NextStateData} |
|
|
%% {next_state, NextStateName, NextStateData, Timeout} |
|
|
%% {stop, Reason, NewStateData}
|
|
%%----------------------------------------------------------------------
|
|
handle_event(_Event, StateName, StateData) ->
|
|
%%----------------------------------------------------------------------
|
|
%% Func: handle_sync_event/4
|
|
%% Returns: The associated StateData for this connection
|
|
%% {reply, Reply, NextStateName, NextStateData}
|
|
%% Reply = {state_infos, [{InfoName::atom(), InfoValue::any()]
|
|
%%----------------------------------------------------------------------
|
|
{next_state, StateName, StateData,
|
|
get_timeout_interval(StateName)}.
|
|
|
|
handle_sync_event(get_state_infos, _From, StateName,
|
|
StateData) ->
|
|
{Addr, Port} = try
|
|
ejabberd_socket:peername(StateData#state.socket)
|
|
of
|
|
{ok, {A, P}} -> {A, P};
|
|
{error, _} -> {unknown, unknown}
|
|
catch
|
|
_:_ -> {unknown, unknown}
|
|
end,
|
|
Infos = [{direction, out}, {statename, StateName},
|
|
{addr, Addr}, {port, Port},
|
|
{streamid, StateData#state.streamid},
|
|
{use_v10, StateData#state.use_v10},
|
|
{tls, StateData#state.tls},
|
|
{tls_required, StateData#state.tls_required},
|
|
{tls_enabled, StateData#state.tls_enabled},
|
|
{tls_options, StateData#state.tls_options},
|
|
{authenticated, StateData#state.authenticated},
|
|
{db_enabled, StateData#state.db_enabled},
|
|
{try_auth, StateData#state.try_auth},
|
|
{myname, StateData#state.myname},
|
|
{server, StateData#state.server},
|
|
{delay_to_retry, StateData#state.delay_to_retry},
|
|
{verify, StateData#state.verify}],
|
|
Reply = {state_infos, Infos},
|
|
{reply, Reply, StateName, StateData};
|
|
%%----------------------------------------------------------------------
|
|
%% Func: handle_sync_event/4
|
|
%% Returns: {next_state, NextStateName, NextStateData} |
|
|
%% {next_state, NextStateName, NextStateData, Timeout} |
|
|
%% {reply, Reply, NextStateName, NextStateData} |
|
|
%% {reply, Reply, NextStateName, NextStateData, Timeout} |
|
|
%% {stop, Reason, NewStateData} |
|
|
%% {stop, Reason, Reply, NewStateData}
|
|
%%----------------------------------------------------------------------
|
|
handle_sync_event(_Event, _From, StateName,
|
|
StateData) ->
|
|
Reply = ok,
|
|
{reply, Reply, StateName, StateData,
|
|
get_timeout_interval(StateName)}.
|
|
|
|
code_change(_OldVsn, StateName, StateData, _Extra) ->
|
|
{ok, StateName, StateData}.
|
|
|
|
%%----------------------------------------------------------------------
|
|
%% Func: handle_info/3
|
|
%% Returns: {next_state, NextStateName, NextStateData} |
|
|
%% {next_state, NextStateName, NextStateData, Timeout} |
|
|
%% {stop, Reason, NewStateData}
|
|
%%----------------------------------------------------------------------
|
|
handle_info({send_text, Text}, StateName, StateData) ->
|
|
send_text(StateData, Text),
|
|
cancel_timer(StateData#state.timer),
|
|
Timer = erlang:start_timer(?S2STIMEOUT, self(), []),
|
|
{next_state, StateName, StateData#state{timer = Timer},
|
|
get_timeout_interval(StateName)};
|
|
handle_info({send_element, El}, StateName, StateData) ->
|
|
case StateName of
|
|
stream_established ->
|
|
cancel_timer(StateData#state.timer),
|
|
Timer = erlang:start_timer(?S2STIMEOUT, self(), []),
|
|
send_element(StateData, El),
|
|
{next_state, StateName, StateData#state{timer = Timer}};
|
|
%% In this state we bounce all message: We are waiting before
|
|
%% trying to reconnect
|
|
wait_before_retry ->
|
|
bounce_element(El, ?ERR_REMOTE_SERVER_NOT_FOUND),
|
|
{next_state, StateName, StateData};
|
|
relay_to_bridge ->
|
|
{Mod, Fun} = StateData#state.bridge,
|
|
?DEBUG("relaying stanza via ~p:~p/1", [Mod, Fun]),
|
|
case catch Mod:Fun(El) of
|
|
{'EXIT', Reason} ->
|
|
?ERROR_MSG("Error while relaying to bridge: ~p",
|
|
[Reason]),
|
|
bounce_element(El, ?ERR_INTERNAL_SERVER_ERROR),
|
|
wait_before_reconnect(StateData);
|
|
_ -> {next_state, StateName, StateData}
|
|
end;
|
|
_ ->
|
|
Q = queue:in(El, StateData#state.queue),
|
|
{next_state, StateName, StateData#state{queue = Q},
|
|
get_timeout_interval(StateName)}
|
|
end;
|
|
handle_info({timeout, Timer, _}, wait_before_retry,
|
|
#state{timer = Timer} = StateData) ->
|
|
?INFO_MSG("Reconnect delay expired: Will now retry "
|
|
"to connect to ~s when needed.",
|
|
[StateData#state.server]),
|
|
{stop, normal, StateData};
|
|
handle_info({timeout, Timer, _}, _StateName,
|
|
#state{timer = Timer} = StateData) ->
|
|
?INFO_MSG("Closing connection with ~s: timeout",
|
|
[StateData#state.server]),
|
|
{stop, normal, StateData};
|
|
handle_info(terminate_if_waiting_before_retry,
|
|
wait_before_retry, StateData) ->
|
|
{stop, normal, StateData};
|
|
handle_info(terminate_if_waiting_before_retry,
|
|
StateName, StateData) ->
|
|
{next_state, StateName, StateData,
|
|
get_timeout_interval(StateName)};
|
|
handle_info(_, StateName, StateData) ->
|
|
{next_state, StateName, StateData,
|
|
get_timeout_interval(StateName)}.
|
|
|
|
%%----------------------------------------------------------------------
|
|
%% Func: terminate/3
|
|
%% Purpose: Shutdown the fsm
|
|
%% Returns: any
|
|
%%----------------------------------------------------------------------
|
|
terminate(Reason, StateName, StateData) ->
|
|
?DEBUG("terminated: ~p", [{Reason, StateName}]),
|
|
case StateData#state.new of
|
|
false -> ok;
|
|
Key ->
|
|
ejabberd_s2s:remove_connection({StateData#state.myname,
|
|
StateData#state.server},
|
|
self(), Key)
|
|
end,
|
|
bounce_queue(StateData#state.queue,
|
|
?ERR_REMOTE_SERVER_NOT_FOUND),
|
|
bounce_messages(?ERR_REMOTE_SERVER_NOT_FOUND),
|
|
case StateData#state.socket of
|
|
undefined -> ok;
|
|
_Socket -> ejabberd_socket:close(StateData#state.socket)
|
|
end,
|
|
ok.
|
|
|
|
%%----------------------------------------------------------------------
|
|
%% Func: print_state/1
|
|
%% Purpose: Prepare the state to be printed on error log
|
|
%% Returns: State to print
|
|
%%----------------------------------------------------------------------
|
|
print_state(State) -> State.
|
|
|
|
%%%----------------------------------------------------------------------
|
|
%%% Internal functions
|
|
%%%----------------------------------------------------------------------
|
|
|
|
send_text(StateData, Text) ->
|
|
ejabberd_socket:send(StateData#state.socket, Text).
|
|
|
|
send_element(StateData, El) ->
|
|
send_text(StateData, xml:element_to_binary(El)).
|
|
|
|
send_queue(StateData, Q) ->
|
|
case queue:out(Q) of
|
|
{{value, El}, Q1} ->
|
|
send_element(StateData, El), send_queue(StateData, Q1);
|
|
{empty, _Q1} -> ok
|
|
end.
|
|
|
|
%% Bounce a single message (xmlelement)
|
|
bounce_element(El, Error) ->
|
|
#xmlel{attrs = Attrs} = El,
|
|
case xml:get_attr_s(<<"type">>, Attrs) of
|
|
<<"error">> -> ok;
|
|
<<"result">> -> ok;
|
|
_ ->
|
|
Err = jlib:make_error_reply(El, Error),
|
|
From = jlib:string_to_jid(xml:get_tag_attr_s(<<"from">>,
|
|
El)),
|
|
To = jlib:string_to_jid(xml:get_tag_attr_s(<<"to">>,
|
|
El)),
|
|
ejabberd_router:route(To, From, Err)
|
|
end.
|
|
|
|
bounce_queue(Q, Error) ->
|
|
case queue:out(Q) of
|
|
{{value, El}, Q1} ->
|
|
bounce_element(El, Error), bounce_queue(Q1, Error);
|
|
{empty, _} -> ok
|
|
end.
|
|
|
|
new_id() -> randoms:get_string().
|
|
|
|
cancel_timer(Timer) ->
|
|
erlang:cancel_timer(Timer),
|
|
receive {timeout, Timer, _} -> ok after 0 -> ok end.
|
|
|
|
bounce_messages(Error) ->
|
|
receive
|
|
{send_element, El} ->
|
|
bounce_element(El, Error), bounce_messages(Error)
|
|
after 0 -> ok
|
|
end.
|
|
|
|
send_db_request(StateData) ->
|
|
Server = StateData#state.server,
|
|
New = case StateData#state.new of
|
|
false ->
|
|
case ejabberd_s2s:try_register({StateData#state.myname,
|
|
Server})
|
|
of
|
|
{key, Key} -> Key;
|
|
false -> false
|
|
end;
|
|
Key -> Key
|
|
end,
|
|
NewStateData = StateData#state{new = New},
|
|
try case New of
|
|
false -> ok;
|
|
Key1 ->
|
|
send_element(StateData,
|
|
#xmlel{name = <<"db:result">>,
|
|
attrs =
|
|
[{<<"from">>, StateData#state.myname},
|
|
{<<"to">>, Server}],
|
|
children = [{xmlcdata, Key1}]})
|
|
end,
|
|
case StateData#state.verify of
|
|
false -> ok;
|
|
{_Pid, Key2, SID} ->
|
|
send_element(StateData,
|
|
#xmlel{name = <<"db:verify">>,
|
|
attrs =
|
|
[{<<"from">>, StateData#state.myname},
|
|
{<<"to">>, StateData#state.server},
|
|
{<<"id">>, SID}],
|
|
children = [{xmlcdata, Key2}]})
|
|
end,
|
|
{next_state, wait_for_validation, NewStateData,
|
|
(?FSMTIMEOUT) * 6}
|
|
catch
|
|
_:_ -> {stop, normal, NewStateData}
|
|
end.
|
|
|
|
is_verify_res(#xmlel{name = Name, attrs = Attrs})
|
|
when Name == <<"db:result">> ->
|
|
{result, xml:get_attr_s(<<"to">>, Attrs),
|
|
xml:get_attr_s(<<"from">>, Attrs),
|
|
xml:get_attr_s(<<"id">>, Attrs),
|
|
xml:get_attr_s(<<"type">>, Attrs)};
|
|
is_verify_res(#xmlel{name = Name, attrs = Attrs})
|
|
when Name == <<"db:verify">> ->
|
|
{verify, xml:get_attr_s(<<"to">>, Attrs),
|
|
xml:get_attr_s(<<"from">>, Attrs),
|
|
xml:get_attr_s(<<"id">>, Attrs),
|
|
xml:get_attr_s(<<"type">>, Attrs)};
|
|
is_verify_res(_) -> false.
|
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
%% SRV support
|
|
|
|
-include_lib("kernel/include/inet.hrl").
|
|
|
|
-spec get_addr_port(binary()) -> [{binary(), inet:port_number()}].
|
|
get_addr_port(Server) ->
|
|
Res = srv_lookup(Server),
|
|
case Res of
|
|
{error, Reason} ->
|
|
?DEBUG("srv lookup of '~s' failed: ~p~n",
|
|
[Server, Reason]),
|
|
[{Server, outgoing_s2s_port()}];
|
|
{ok, HEnt} ->
|
|
?DEBUG("srv lookup of '~s': ~p~n",
|
|
[Server, HEnt#hostent.h_addr_list]),
|
|
AddrList = HEnt#hostent.h_addr_list,
|
|
{A1, A2, A3} = now(),
|
|
random:seed(A1, A2, A3),
|
|
case catch lists:map(fun ({Priority, Weight, Port,
|
|
Host}) ->
|
|
N = case Weight of
|
|
0 -> 0;
|
|
_ ->
|
|
(Weight + 1) * random:uniform()
|
|
end,
|
|
{Priority * 65536 - N, Host, Port}
|
|
end,
|
|
AddrList)
|
|
of
|
|
SortedList = [_ | _] ->
|
|
List = lists:map(fun ({_, Host, Port}) ->
|
|
{list_to_binary(Host), Port}
|
|
end,
|
|
lists:keysort(1, SortedList)),
|
|
?DEBUG("srv lookup of '~s': ~p~n", [Server, List]),
|
|
List;
|
|
_ -> [{Server, outgoing_s2s_port()}]
|
|
end
|
|
end.
|
|
|
|
srv_lookup(Server) ->
|
|
TimeoutMs = timer:seconds(
|
|
ejabberd_config:get_option(
|
|
s2s_dns_timeout,
|
|
fun(I) when is_integer(I), I>=0 -> I end,
|
|
10)),
|
|
Retries = ejabberd_config:get_option(
|
|
s2s_dns_retries,
|
|
fun(I) when is_integer(I), I>=0 -> I end,
|
|
2),
|
|
srv_lookup(binary_to_list(Server), TimeoutMs, Retries).
|
|
|
|
%% XXX - this behaviour is suboptimal in the case that the domain
|
|
%% has a "_xmpp-server._tcp." but not a "_jabber._tcp." record and
|
|
%% we don't get a DNS reply for the "_xmpp-server._tcp." lookup. In this
|
|
%% case we'll give up when we get the "_jabber._tcp." nxdomain reply.
|
|
srv_lookup(_Server, _Timeout, Retries)
|
|
when Retries < 1 ->
|
|
{error, timeout};
|
|
srv_lookup(Server, Timeout, Retries) ->
|
|
case inet_res:getbyname("_xmpp-server._tcp." ++ Server,
|
|
srv, Timeout)
|
|
of
|
|
{error, _Reason} ->
|
|
case inet_res:getbyname("_jabber._tcp." ++ Server, srv,
|
|
Timeout)
|
|
of
|
|
{error, timeout} ->
|
|
?ERROR_MSG("The DNS servers~n ~p~ntimed out on "
|
|
"request for ~p IN SRV. You should check "
|
|
"your DNS configuration.",
|
|
[inet_db:res_option(nameserver), Server]),
|
|
srv_lookup(Server, Timeout, Retries - 1);
|
|
R -> R
|
|
end;
|
|
{ok, _HEnt} = R -> R
|
|
end.
|
|
|
|
test_get_addr_port(Server) ->
|
|
lists:foldl(fun (_, Acc) ->
|
|
[HostPort | _] = get_addr_port(Server),
|
|
case lists:keysearch(HostPort, 1, Acc) of
|
|
false -> [{HostPort, 1} | Acc];
|
|
{value, {_, Num}} ->
|
|
lists:keyreplace(HostPort, 1, Acc,
|
|
{HostPort, Num + 1})
|
|
end
|
|
end,
|
|
[], lists:seq(1, 100000)).
|
|
|
|
get_addrs(Host, Family) ->
|
|
Type = case Family of
|
|
inet4 -> inet;
|
|
ipv4 -> inet;
|
|
inet6 -> inet6;
|
|
ipv6 -> inet6
|
|
end,
|
|
case inet:gethostbyname(binary_to_list(Host), Type) of
|
|
{ok, #hostent{h_addr_list = Addrs}} ->
|
|
?DEBUG("~s of ~s resolved to: ~p~n",
|
|
[Type, Host, Addrs]),
|
|
Addrs;
|
|
{error, Reason} ->
|
|
?DEBUG("~s lookup of '~s' failed: ~p~n",
|
|
[Type, Host, Reason]),
|
|
[]
|
|
end.
|
|
|
|
outgoing_s2s_port() ->
|
|
ejabberd_config:get_option(
|
|
outgoing_s2s_port,
|
|
fun(I) when is_integer(I), I > 0, I =< 65536 -> I end,
|
|
5269).
|
|
|
|
outgoing_s2s_families() ->
|
|
ejabberd_config:get_option(
|
|
outgoing_s2s_families,
|
|
fun(Families) ->
|
|
true = lists:all(
|
|
fun(ipv4) -> true;
|
|
(ipv6) -> true
|
|
end, Families),
|
|
Families
|
|
end, [ipv4, ipv6]).
|
|
|
|
outgoing_s2s_timeout() ->
|
|
ejabberd_config:get_option(
|
|
outgoing_s2s_timeout,
|
|
fun(TimeOut) when is_integer(TimeOut), TimeOut > 0 ->
|
|
TimeOut;
|
|
(infinity) ->
|
|
infinity
|
|
end, 10000).
|
|
|
|
transform_options(Opts) ->
|
|
lists:foldl(fun transform_options/2, [], Opts).
|
|
|
|
transform_options({outgoing_s2s_options, Families, Timeout}, Opts) ->
|
|
?WARNING_MSG("Option 'outgoing_s2s_options' is deprecated. "
|
|
"The option is still supported "
|
|
"but it is better to fix your config: "
|
|
"use 'outgoing_s2s_timeout' and "
|
|
"'outgoing_s2s_families' instead.", []),
|
|
[{outgoing_s2s_families, Families},
|
|
{outgoing_s2s_timeout, Timeout}
|
|
| Opts];
|
|
transform_options({s2s_dns_options, S2SDNSOpts}, AllOpts) ->
|
|
?WARNING_MSG("Option 's2s_dns_options' is deprecated. "
|
|
"The option is still supported "
|
|
"but it is better to fix your config: "
|
|
"use 's2s_dns_timeout' and "
|
|
"'s2s_dns_retries' instead", []),
|
|
lists:foldr(
|
|
fun({timeout, T}, AccOpts) ->
|
|
[{s2s_dns_timeout, T}|AccOpts];
|
|
({retries, R}, AccOpts) ->
|
|
[{s2s_dns_retries, R}|AccOpts];
|
|
(_, AccOpts) ->
|
|
AccOpts
|
|
end, AllOpts, S2SDNSOpts);
|
|
transform_options(Opt, Opts) ->
|
|
[Opt|Opts].
|
|
|
|
%% Human readable S2S logging: Log only new outgoing connections as INFO
|
|
%% Do not log dialback
|
|
log_s2s_out(false, _, _, _) -> ok;
|
|
%% Log new outgoing connections:
|
|
log_s2s_out(_, Myname, Server, Tls) ->
|
|
?INFO_MSG("Trying to open s2s connection: ~s -> "
|
|
"~s with TLS=~p",
|
|
[Myname, Server, Tls]).
|
|
|
|
%% Calculate timeout depending on which state we are in:
|
|
%% Can return integer > 0 | infinity
|
|
get_timeout_interval(StateName) ->
|
|
case StateName of
|
|
%% Validation implies dialback: Networking can take longer:
|
|
wait_for_validation -> (?FSMTIMEOUT) * 6;
|
|
%% When stream is established, we only rely on S2S Timeout timer:
|
|
stream_established -> infinity;
|
|
_ -> ?FSMTIMEOUT
|
|
end.
|
|
|
|
%% This function is intended to be called at the end of a state
|
|
%% function that want to wait for a reconnect delay before stopping.
|
|
wait_before_reconnect(StateData) ->
|
|
bounce_queue(StateData#state.queue,
|
|
?ERR_REMOTE_SERVER_NOT_FOUND),
|
|
bounce_messages(?ERR_REMOTE_SERVER_NOT_FOUND),
|
|
cancel_timer(StateData#state.timer),
|
|
Delay = case StateData#state.delay_to_retry of
|
|
undefined_delay ->
|
|
{_, _, MicroSecs} = now(), MicroSecs rem 14000 + 1000;
|
|
D1 -> lists:min([D1 * 2, get_max_retry_delay()])
|
|
end,
|
|
Timer = erlang:start_timer(Delay, self(), []),
|
|
%% @doc Get the maximum allowed delay for retry to reconnect (in miliseconds).
|
|
%% The default value is 5 minutes.
|
|
%% The option {s2s_max_retry_delay, Seconds} can be used (in seconds).
|
|
%% @spec () -> integer()
|
|
{next_state, wait_before_retry,
|
|
StateData#state{timer = Timer, delay_to_retry = Delay,
|
|
queue = queue:new()}}.
|
|
|
|
get_max_retry_delay() ->
|
|
case ejabberd_config:get_option(
|
|
s2s_max_retry_delay,
|
|
fun(I) when is_integer(I), I > 0 -> I end) of
|
|
undefined -> ?MAX_RETRY_DELAY;
|
|
Seconds -> Seconds * 1000
|
|
end.
|
|
|
|
%% Terminate s2s_out connections that are in state wait_before_retry
|
|
terminate_if_waiting_delay(From, To) ->
|
|
FromTo = {From, To},
|
|
Pids = ejabberd_s2s:get_connections_pids(FromTo),
|
|
lists:foreach(fun (Pid) ->
|
|
Pid ! terminate_if_waiting_before_retry
|
|
end,
|
|
Pids).
|
|
|
|
fsm_limit_opts() ->
|
|
case ejabberd_config:get_option(
|
|
max_fsm_queue,
|
|
fun(I) when is_integer(I), I > 0 -> I end) of
|
|
undefined -> [];
|
|
N -> [{max_queue, N}]
|
|
end.
|