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* src/ejabberd_s2s.erl: Max number of connections and max number
of connections per node now can be specified via max_s2s_connections and max_s2s_connections_per_node acl rules SVN Revision: 950
This commit is contained in:
Alexey Shchepin
parent
4b2bd22533
commit
f82b84158e
@ -1,10 +1,16 @@
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2007-09-25 Alexey Shchepin <alexey@process-one.net>
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* src/ejabberd_s2s.erl: Max number of connections and max number
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of connections per node now can be specified via
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max_s2s_connections and max_s2s_connections_per_node acl rules
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2007-09-14 Mickael Remond <mremond@process-one.net>
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* src/ejabberd_s2s_out.erl: Changed to actual p1_fsm behaviour. It
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was working correctly as the API of p1_fsm and gen_fsm is strictly
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the same.
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* src/ejabberd_s2_in.erl: Added debug hook for s2s loop (EJAB-358).
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* src/ejabberd_s2s_in.erl: Added debug hook for s2s loop (EJAB-358).
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* src/ejabberd_c2s.erl: Added debug hook for c2s loop (EJAB-358).
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@ -3,36 +3,37 @@
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%%% Author : Alexey Shchepin <alexey@sevcom.net>
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%%% Purpose : S2S connections manager
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%%% Created : 7 Dec 2002 by Alexey Shchepin <alexey@sevcom.net>
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%%% Id : $Id: ejabberd_s2s.erl 820 2007-07-19 21:17:13Z mremond $
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%%% Id : $Id$
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%%%----------------------------------------------------------------------
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-module(ejabberd_s2s).
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-author('alexey@sevcom.net').
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-vsn('$Revision: 820 $ ').
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-vsn('$Revision$ ').
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-behaviour(gen_server).
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%% API
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-export([start_link/0,
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route/3,
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have_connection/1,
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has_key/2,
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try_register/1,
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remove_connection/3,
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dirty_get_connections/0,
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allow_host/2,
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ctl_process/2
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]).
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route/3,
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have_connection/1,
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has_key/2,
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try_register/1,
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remove_connection/3,
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dirty_get_connections/0,
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allow_host/2,
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ctl_process/2
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]).
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%% gen_server callbacks
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-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
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terminate/2, code_change/3]).
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terminate/2, code_change/3]).
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-include("ejabberd.hrl").
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-include("jlib.hrl").
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-include("ejabberd_ctl.hrl").
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-define(DEFAULT_MAX_S2S_CONNEXIONS_NUMBER, 3).
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-define(DEFAULT_MAX_S2S_CONNECTIONS_NUMBER, 1).
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-define(DEFAULT_MAX_S2S_CONNECTIONS_NUMBER_PER_NODE, 1).
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-record(s2s, {fromto, pid, key}).
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-record(state, {}).
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@ -49,64 +50,72 @@ start_link() ->
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route(From, To, Packet) ->
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case catch do_route(From, To, Packet) of
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{'EXIT', Reason} ->
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?ERROR_MSG("~p~nwhen processing: ~p",
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[Reason, {From, To, Packet}]);
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_ ->
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ok
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{'EXIT', Reason} ->
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?ERROR_MSG("~p~nwhen processing: ~p",
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[Reason, {From, To, Packet}]);
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_ ->
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ok
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end.
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remove_connection(FromTo, Pid, Key) ->
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case catch mnesia:dirty_match_object(s2s, {s2s, FromTo, Pid, '_'}) of
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[#s2s{pid = Pid, key = Key}] ->
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F = fun() ->
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mnesia:delete_object(#s2s{fromto = FromTo,
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pid = Pid,
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key = Key})
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end,
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mnesia:transaction(F);
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_ ->
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ok
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case catch mnesia:dirty_match_object(s2s, #s2s{fromto = FromTo,
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pid = Pid,
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_ = '_'}) of
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[#s2s{pid = Pid, key = Key}] ->
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F = fun() ->
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mnesia:delete_object(#s2s{fromto = FromTo,
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pid = Pid,
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key = Key})
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end,
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mnesia:transaction(F);
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_ ->
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ok
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end.
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have_connection(FromTo) ->
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case catch mnesia:dirty_read(s2s, FromTo) of
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[_] ->
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true;
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_ ->
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false
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[_] ->
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true;
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_ ->
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false
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end.
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has_key(FromTo, Key) ->
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case mnesia:dirty_select(s2s,
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[{#s2s{fromto = FromTo, key = Key, _ = '_'},
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[],
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['$_']}]) of
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[] ->
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false;
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_ ->
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true
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[{#s2s{fromto = FromTo, key = Key, _ = '_'},
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[],
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['$_']}]) of
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[] ->
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false;
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_ ->
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true
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end.
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try_register(FromTo) ->
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Key = randoms:get_string(),
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Max_S2S_Connections_Number = max_s2s_connexions_number(element(1, FromTo)),
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MaxS2SConnectionsNumber = max_s2s_connections_number(FromTo),
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MaxS2SConnectionsNumberPerNode =
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max_s2s_connections_number_per_node(FromTo),
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F = fun() ->
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case mnesia:read({s2s, FromTo}) of
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L when length(L) < Max_S2S_Connections_Number ->
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mnesia:write(#s2s{fromto = FromTo,
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pid = self(),
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key = Key}),
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{key, Key};
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_ ->
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false
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end
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end,
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L = mnesia:read({s2s, FromTo}),
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NeededConnections = needed_connections_number(
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L, MaxS2SConnectionsNumber,
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MaxS2SConnectionsNumberPerNode),
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if
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NeededConnections > 0 ->
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mnesia:write(#s2s{fromto = FromTo,
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pid = self(),
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key = Key}),
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{key, Key};
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true ->
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false
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end
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end,
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case mnesia:transaction(F) of
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{atomic, Res} ->
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Res;
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_ ->
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false
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{atomic, Res} ->
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Res;
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_ ->
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false
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end.
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dirty_get_connections() ->
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@ -126,9 +135,8 @@ dirty_get_connections() ->
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init([]) ->
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update_tables(),
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mnesia:create_table(s2s, [{ram_copies, [node()]}, {type, bag},
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{attributes, record_info(fields, s2s)}]),
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{attributes, record_info(fields, s2s)}]),
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mnesia:add_table_copy(s2s, node(), ram_copies),
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mnesia:add_table_index(s2s, key),
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mnesia:subscribe(system),
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ejabberd_ctl:register_commands(
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[{"incoming-s2s-number", "print number of incoming s2s connections on the node"},
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@ -169,11 +177,11 @@ handle_info({mnesia_system_event, {mnesia_down, Node}}, State) ->
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{noreply, State};
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handle_info({route, From, To, Packet}, State) ->
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case catch do_route(From, To, Packet) of
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{'EXIT', Reason} ->
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?ERROR_MSG("~p~nwhen processing: ~p",
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[Reason, {From, To, Packet}]);
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_ ->
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ok
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{'EXIT', Reason} ->
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?ERROR_MSG("~p~nwhen processing: ~p",
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[Reason, {From, To, Packet}]);
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_ ->
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ok
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end,
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{noreply, State};
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handle_info(_Info, State) ->
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@ -201,125 +209,162 @@ code_change(_OldVsn, State, _Extra) ->
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%%--------------------------------------------------------------------
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clean_table_from_bad_node(Node) ->
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F = fun() ->
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Es = mnesia:select(
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s2s,
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[{#s2s{pid = '$1', _ = '_'},
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[{'==', {node, '$1'}, Node}],
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['$_']}]),
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lists:foreach(fun(E) ->
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mnesia:delete_object(E)
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end, Es)
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end,
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Es = mnesia:select(
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s2s,
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[{#s2s{pid = '$1', _ = '_'},
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[{'==', {node, '$1'}, Node}],
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['$_']}]),
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lists:foreach(fun(E) ->
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mnesia:delete_object(E)
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end, Es)
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end,
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mnesia:transaction(F).
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do_route(From, To, Packet) ->
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?DEBUG("s2s manager~n\tfrom ~p~n\tto ~p~n\tpacket ~P~n",
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[From, To, Packet, 8]),
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[From, To, Packet, 8]),
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case find_connection(From, To) of
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{atomic, Pid} when pid(Pid) ->
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?DEBUG("sending to process ~p~n", [Pid]),
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{xmlelement, Name, Attrs, Els} = Packet,
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NewAttrs = jlib:replace_from_to_attrs(jlib:jid_to_string(From),
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jlib:jid_to_string(To),
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Attrs),
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send_element(Pid, {xmlelement, Name, NewAttrs, Els}),
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ok;
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{aborted, _Reason} ->
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case xml:get_tag_attr_s("type", Packet) of
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"error" -> ok;
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"result" -> ok;
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_ ->
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Err = jlib:make_error_reply(
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Packet, ?ERR_SERVICE_UNAVAILABLE),
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ejabberd_router:route(To, From, Err)
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end,
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false
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{atomic, Pid} when pid(Pid) ->
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?DEBUG("sending to process ~p~n", [Pid]),
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{xmlelement, Name, Attrs, Els} = Packet,
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NewAttrs = jlib:replace_from_to_attrs(jlib:jid_to_string(From),
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jlib:jid_to_string(To),
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Attrs),
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send_element(Pid, {xmlelement, Name, NewAttrs, Els}),
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ok;
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{aborted, _Reason} ->
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case xml:get_tag_attr_s("type", Packet) of
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"error" -> ok;
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"result" -> ok;
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_ ->
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Err = jlib:make_error_reply(
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Packet, ?ERR_SERVICE_UNAVAILABLE),
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ejabberd_router:route(To, From, Err)
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end,
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false
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end.
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find_connection(From, To) ->
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#jid{lserver = MyServer} = From,
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#jid{lserver = Server} = To,
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FromTo = {MyServer, Server},
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Max_S2S_Connections_Number = max_s2s_connexions_number(MyServer),
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?INFO_MSG("Finding connection for ~p~n", [FromTo]),
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MaxS2SConnectionsNumber = max_s2s_connections_number(FromTo),
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MaxS2SConnectionsNumberPerNode =
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max_s2s_connections_number_per_node(FromTo),
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?DEBUG("Finding connection for ~p~n", [FromTo]),
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case catch mnesia:dirty_read(s2s, FromTo) of
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{'EXIT', Reason} ->
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{aborted, Reason};
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[] ->
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%% We try to establish all the connections if the host is not a
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%% service and if the s2s host is not blacklisted or
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%% is in whitelist:
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case not is_service(From, To) andalso allow_host(MyServer, Server) of
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true ->
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open_several_connections(Max_S2S_Connections_Number, MyServer,
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Server, From, FromTo, Max_S2S_Connections_Number);
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false ->
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{aborted, error}
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end;
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L when is_list(L) , length(L) < Max_S2S_Connections_Number ->
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%% We establish the missing connections for this pair.
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open_several_connections(Max_S2S_Connections_Number-length(L), MyServer,
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Server, From, FromTo, Max_S2S_Connections_Number);
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L when is_list(L) ->
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%% We choose a connexion from the pool of opened ones.
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{atomic, choose_connection(From, L)}
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{'EXIT', Reason} ->
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{aborted, Reason};
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[] ->
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%% We try to establish all the connections if the host is not a
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%% service and if the s2s host is not blacklisted or
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%% is in whitelist:
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case not is_service(From, To) andalso allow_host(MyServer, Server) of
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true ->
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NeededConnections = needed_connections_number(
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[], MaxS2SConnectionsNumber,
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MaxS2SConnectionsNumberPerNode),
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open_several_connections(
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NeededConnections, MyServer,
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Server, From, FromTo,
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MaxS2SConnectionsNumber, MaxS2SConnectionsNumberPerNode);
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false ->
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{aborted, error}
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end;
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L when is_list(L) ->
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NeededConnections = needed_connections_number(
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L, MaxS2SConnectionsNumber,
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MaxS2SConnectionsNumberPerNode),
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if
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NeededConnections > 0 ->
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%% We establish the missing connections for this pair.
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open_several_connections(
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NeededConnections, MyServer,
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Server, From, FromTo,
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MaxS2SConnectionsNumber, MaxS2SConnectionsNumberPerNode);
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true ->
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%% We choose a connexion from the pool of opened ones.
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{atomic, choose_connection(From, L)}
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end
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end.
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choose_connection(From, Connections) ->
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%El = lists:nth(random:uniform(length(Connections)), Connections),
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% use sticky connections based on the full JID of the sender
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Pid = case lists:nth(erlang:phash(From, length(Connections)), Connections) of
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El when is_record(El, s2s) ->
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El#s2s.pid;
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P when is_pid(P) ->
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P
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end,
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?INFO_MSG("Using ejabberd_s2s_out ~p~n", [Pid]),
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choose_pid(From, [C#s2s.pid || C <- Connections]).
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choose_pid(From, Pids) ->
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Pids1 = case [P || P <- Pids, node(P) == node()] of
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[] -> Pids;
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Ps -> Ps
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end,
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%% use sticky connections based on the full JID of the sender
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Pid = lists:nth(erlang:phash(From, length(Pids1)), Pids1),
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?DEBUG("Using ejabberd_s2s_out ~p~n", [Pid]),
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Pid.
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open_several_connections(N, MyServer, Server, From, FromTo, Max_S2S_Connections_Number) ->
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Connections_Result = [new_connection(MyServer, Server, From, FromTo, Max_S2S_Connections_Number)
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|| _N <- lists:seq(1, N)],
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case [PID || {atomic, PID} <- Connections_Result] of
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open_several_connections(N, MyServer, Server, From, FromTo,
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MaxS2SConnectionsNumber,
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MaxS2SConnectionsNumberPerNode) ->
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ConnectionsResult =
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[new_connection(MyServer, Server, From, FromTo,
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MaxS2SConnectionsNumber, MaxS2SConnectionsNumberPerNode)
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|| _N <- lists:seq(1, N)],
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case [PID || {atomic, PID} <- ConnectionsResult] of
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[] ->
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hd(Connections_Result);
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hd(ConnectionsResult);
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PIDs ->
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{atomic, choose_connection(From, PIDs)}
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{atomic, choose_pid(From, PIDs)}
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end.
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new_connection(MyServer, Server, From, FromTo, Max_S2S_Connections_Number) ->
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new_connection(MyServer, Server, From, FromTo,
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MaxS2SConnectionsNumber, MaxS2SConnectionsNumberPerNode) ->
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Key = randoms:get_string(),
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{ok, Pid} = ejabberd_s2s_out:start(
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MyServer, Server, {new, Key}),
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MyServer, Server, {new, Key}),
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F = fun() ->
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case mnesia:read({s2s, FromTo}) of
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L when length(L) < Max_S2S_Connections_Number ->
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mnesia:write(#s2s{fromto = FromTo,
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pid = Pid,
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key = Key}),
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?INFO_MSG("New s2s connection started ~p~n", [Pid]),
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Pid;
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L ->
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choose_connection(From, L)
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end
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end,
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L = mnesia:read({s2s, FromTo}),
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NeededConnections = needed_connections_number(
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L, MaxS2SConnectionsNumber,
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MaxS2SConnectionsNumberPerNode),
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if
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NeededConnections > 0 ->
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mnesia:write(#s2s{fromto = FromTo,
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pid = Pid,
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key = Key}),
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?INFO_MSG("New s2s connection started ~p", [Pid]),
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Pid;
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true ->
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choose_connection(From, L)
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end
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end,
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TRes = mnesia:transaction(F),
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case TRes of
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{atomic, Pid} ->
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ejabberd_s2s_out:start_connection(Pid);
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_ ->
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ejabberd_s2s_out:stop_connection(Pid)
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{atomic, Pid} ->
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ejabberd_s2s_out:start_connection(Pid);
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_ ->
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ejabberd_s2s_out:stop_connection(Pid)
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end,
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TRes.
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max_s2s_connexions_number(Host) ->
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case ejabberd_config:get_local_option({max_s2s_connexions_number, Host}) of
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N when is_integer(N) ->
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N;
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_ ->
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?DEFAULT_MAX_S2S_CONNEXIONS_NUMBER
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max_s2s_connections_number({From, To}) ->
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case acl:match_rule(
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From, max_s2s_connections, jlib:make_jid("", To, "")) of
|
||||
Max when is_integer(Max) -> Max;
|
||||
_ -> ?DEFAULT_MAX_S2S_CONNECTIONS_NUMBER
|
||||
end.
|
||||
|
||||
max_s2s_connections_number_per_node({From, To}) ->
|
||||
case acl:match_rule(
|
||||
From, max_s2s_connections_per_node, jlib:make_jid("", To, "")) of
|
||||
Max when is_integer(Max) -> Max;
|
||||
_ -> ?DEFAULT_MAX_S2S_CONNECTIONS_NUMBER_PER_NODE
|
||||
end.
|
||||
|
||||
needed_connections_number(Ls, MaxS2SConnectionsNumber,
|
||||
MaxS2SConnectionsNumberPerNode) ->
|
||||
LocalLs = [L || L <- Ls, node(L#s2s.pid) == node()],
|
||||
lists:min([MaxS2SConnectionsNumber - length(Ls),
|
||||
MaxS2SConnectionsNumberPerNode - length(LocalLs)]).
|
||||
|
||||
%%--------------------------------------------------------------------
|
||||
%% Function: is_service(From, To) -> true | false
|
||||
%% Description: Return true if the destination must be considered as a
|
||||
@ -328,12 +373,12 @@ max_s2s_connexions_number(Host) ->
|
||||
is_service(From, To) ->
|
||||
LFromDomain = From#jid.lserver,
|
||||
case ejabberd_config:get_local_option({route_subdomains, LFromDomain}) of
|
||||
s2s -> % bypass RFC 3920 10.3
|
||||
false;
|
||||
_ ->
|
||||
LDstDomain = To#jid.lserver,
|
||||
P = fun(Domain) -> is_subdomain(LDstDomain, Domain) end,
|
||||
lists:any(P, ?MYHOSTS)
|
||||
s2s -> % bypass RFC 3920 10.3
|
||||
false;
|
||||
_ ->
|
||||
LDstDomain = To#jid.lserver,
|
||||
P = fun(Domain) -> is_subdomain(LDstDomain, Domain) end,
|
||||
lists:any(P, ?MYHOSTS)
|
||||
end.
|
||||
|
||||
%%--------------------------------------------------------------------
|
||||
@ -361,39 +406,40 @@ ctl_process(Val, _Args) ->
|
||||
|
||||
update_tables() ->
|
||||
case catch mnesia:table_info(s2s, type) of
|
||||
bag ->
|
||||
ok;
|
||||
{'EXIT', _} ->
|
||||
ok;
|
||||
_ ->
|
||||
% XXX TODO convert it ?
|
||||
mnesia:delete_table(s2s)
|
||||
bag ->
|
||||
ok;
|
||||
{'EXIT', _} ->
|
||||
ok;
|
||||
_ ->
|
||||
% XXX TODO convert it ?
|
||||
mnesia:delete_table(s2s)
|
||||
end,
|
||||
case catch mnesia:table_info(s2s, attributes) of
|
||||
[fromto, node, key] ->
|
||||
mnesia:transform_table(s2s, ignore, [fromto, pid, key]),
|
||||
mnesia:clear_table(s2s);
|
||||
[fromto, pid, key] ->
|
||||
ok;
|
||||
{'EXIT', _} ->
|
||||
ok
|
||||
[fromto, node, key] ->
|
||||
mnesia:transform_table(s2s, ignore, [fromto, pid, key]),
|
||||
mnesia:clear_table(s2s);
|
||||
[fromto, pid, key] ->
|
||||
ok;
|
||||
{'EXIT', _} ->
|
||||
ok
|
||||
end,
|
||||
case lists:member(local_s2s, mnesia:system_info(tables)) of
|
||||
true ->
|
||||
mnesia:delete_table(local_s2s);
|
||||
false ->
|
||||
ok
|
||||
true ->
|
||||
mnesia:delete_table(local_s2s);
|
||||
false ->
|
||||
ok
|
||||
end.
|
||||
|
||||
%% Check if host is in blacklist or white list
|
||||
allow_host(MyServer, S2SHost) ->
|
||||
case ejabberd_config:get_local_option({{s2s_host, S2SHost},MyServer}) of
|
||||
deny -> false;
|
||||
allow -> true;
|
||||
_ ->
|
||||
case ejabberd_config:get_local_option({s2s_default_policy, MyServer}) of
|
||||
deny -> false;
|
||||
allow -> true;
|
||||
_ -> true %% The default s2s policy is allow
|
||||
end
|
||||
deny -> false;
|
||||
allow -> true;
|
||||
_ ->
|
||||
case ejabberd_config:get_local_option({s2s_default_policy, MyServer}) of
|
||||
deny -> false;
|
||||
allow -> true;
|
||||
_ -> true %% The default s2s policy is allow
|
||||
end
|
||||
end.
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user