138 lines
4.3 KiB
Erlang
138 lines
4.3 KiB
Erlang
%%%-------------------------------------------------------------------
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%%% Author : Evgeny Khramtsov <ekhramtsov@process-one.net>
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%%% Created : 30 Mar 2017 by Evgeny Khramtsov <ekhramtsov@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2020 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(mod_proxy65_sql).
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-behaviour(mod_proxy65).
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%% API
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-export([init/0, register_stream/2, unregister_stream/1, activate_stream/4]).
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-include("logger.hrl").
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-include("ejabberd_sql_pt.hrl").
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%%%===================================================================
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%%% API
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%%%===================================================================
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init() ->
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NodeS = erlang:atom_to_binary(node(), latin1),
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?DEBUG("Cleaning SQL 'proxy65' table...", []),
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case ejabberd_sql:sql_query(
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ejabberd_config:get_myname(),
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?SQL("delete from proxy65 where "
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"node_i=%(NodeS)s or node_t=%(NodeS)s")) of
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{updated, _} ->
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ok;
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Err ->
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?ERROR_MSG("Failed to clean 'proxy65' table: ~p", [Err]),
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Err
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end.
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register_stream(SID, Pid) ->
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PidS = misc:encode_pid(Pid),
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NodeS = erlang:atom_to_binary(node(Pid), latin1),
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F = fun() ->
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case ejabberd_sql:sql_query_t(
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?SQL("update proxy65 set pid_i=%(PidS)s, "
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"node_i=%(NodeS)s where sid=%(SID)s")) of
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{updated, 1} ->
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ok;
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_ ->
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ejabberd_sql:sql_query_t(
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?SQL("insert into proxy65"
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"(sid, pid_t, node_t, pid_i, node_i, jid_i) "
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"values (%(SID)s, %(PidS)s, %(NodeS)s, '', '', '')"))
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end
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end,
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case ejabberd_sql:sql_transaction(ejabberd_config:get_myname(), F) of
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{atomic, _} ->
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ok;
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{aborted, Reason} ->
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{error, Reason}
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end.
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unregister_stream(SID) ->
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F = fun() ->
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ejabberd_sql:sql_query_t(
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?SQL("delete from proxy65 where sid=%(SID)s"))
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end,
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case ejabberd_sql:sql_transaction(ejabberd_config:get_myname(), F) of
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{atomic, _} ->
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ok;
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{aborted, Reason} ->
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{error, Reason}
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end.
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activate_stream(SID, IJID, MaxConnections, _Node) ->
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F = fun() ->
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case ejabberd_sql:sql_query_t(
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?SQL("select @(pid_t)s, @(node_t)s, @(pid_i)s, "
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"@(node_i)s, @(jid_i)s from proxy65 where "
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"sid=%(SID)s")) of
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{selected, [{TPidS, TNodeS, IPidS, INodeS, <<"">>}]}
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when IPidS /= <<"">> ->
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try {misc:decode_pid(TPidS, TNodeS),
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misc:decode_pid(IPidS, INodeS)} of
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{TPid, IPid} ->
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case ejabberd_sql:sql_query_t(
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?SQL("update proxy65 set jid_i=%(IJID)s "
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"where sid=%(SID)s")) of
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{updated, 1} when is_integer(MaxConnections) ->
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case ejabberd_sql:sql_query_t(
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?SQL("select @(count(*))d from proxy65 "
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"where jid_i=%(IJID)s")) of
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{selected, [{Num}]} when Num > MaxConnections ->
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ejabberd_sql:abort({limit, IPid, TPid});
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{selected, _} ->
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{ok, IPid, TPid};
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Err ->
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ejabberd_sql:abort(Err)
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end;
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{updated, _} ->
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{ok, IPid, TPid};
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Err ->
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ejabberd_sql:abort(Err)
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end
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catch _:{bad_node, _} ->
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{error, notfound}
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end;
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{selected, [{_, _, _, _, JID}]} when JID /= <<"">> ->
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{error, conflict};
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{selected, _} ->
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{error, notfound};
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Err ->
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ejabberd_sql:abort(Err)
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end
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end,
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case ejabberd_sql:sql_transaction(ejabberd_config:get_myname(), F) of
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{atomic, Result} ->
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Result;
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{aborted, {limit, _, _} = Limit} ->
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{error, Limit};
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{aborted, Reason} ->
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{error, Reason}
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end.
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%%%===================================================================
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%%% Internal functions
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%%%===================================================================
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