%%%-------------------------------------------------------------------
%%% Author : Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% Created : 30 Mar 2017 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2021 ProcessOne
%%%
%%% This program is free software; you can redistribute it and/or
%%% modify it under the terms of the GNU General Public License as
%%% published by the Free Software Foundation; either version 2 of the
%%% License, or (at your option) any later version.
%%%
%%% This program is distributed in the hope that it will be useful,
%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
%%% General Public License for more details.
%%%
%%% You should have received a copy of the GNU General Public License along
%%% with this program; if not, write to the Free Software Foundation, Inc.,
%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
%%%
%%%-------------------------------------------------------------------
-module(mod_proxy65_sql).
-behaviour(mod_proxy65).
%% API
-export([init/0, register_stream/2, unregister_stream/1, activate_stream/4]).
-include("logger.hrl").
-include("ejabberd_sql_pt.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init() ->
NodeS = erlang:atom_to_binary(node(), latin1),
?DEBUG("Cleaning SQL 'proxy65' table...", []),
case ejabberd_sql:sql_query(
ejabberd_config:get_myname(),
?SQL("delete from proxy65 where "
"node_i=%(NodeS)s or node_t=%(NodeS)s")) of
{updated, _} ->
ok;
Err ->
?ERROR_MSG("Failed to clean 'proxy65' table: ~p", [Err]),
Err
end.
register_stream(SID, Pid) ->
PidS = misc:encode_pid(Pid),
NodeS = erlang:atom_to_binary(node(Pid), latin1),
F = fun() ->
case ejabberd_sql:sql_query_t(
?SQL("update proxy65 set pid_i=%(PidS)s, "
"node_i=%(NodeS)s where sid=%(SID)s")) of
{updated, 1} ->
ok;
_ ->
ejabberd_sql:sql_query_t(
?SQL("insert into proxy65"
"(sid, pid_t, node_t, pid_i, node_i, jid_i) "
"values (%(SID)s, %(PidS)s, %(NodeS)s, '', '', '')"))
end
end,
case ejabberd_sql:sql_transaction(ejabberd_config:get_myname(), F) of
{atomic, _} ->
ok;
{aborted, Reason} ->
{error, Reason}
end.
unregister_stream(SID) ->
F = fun() ->
ejabberd_sql:sql_query_t(
?SQL("delete from proxy65 where sid=%(SID)s"))
end,
case ejabberd_sql:sql_transaction(ejabberd_config:get_myname(), F) of
{atomic, _} ->
ok;
{aborted, Reason} ->
{error, Reason}
end.
activate_stream(SID, IJID, MaxConnections, _Node) ->
F = fun() ->
case ejabberd_sql:sql_query_t(
?SQL("select @(pid_t)s, @(node_t)s, @(pid_i)s, "
"@(node_i)s, @(jid_i)s from proxy65 where "
"sid=%(SID)s")) of
{selected, [{TPidS, TNodeS, IPidS, INodeS, <<"">>}]}
when IPidS /= <<"">> ->
try {misc:decode_pid(TPidS, TNodeS),
misc:decode_pid(IPidS, INodeS)} of
{TPid, IPid} ->
case ejabberd_sql:sql_query_t(
?SQL("update proxy65 set jid_i=%(IJID)s "
"where sid=%(SID)s")) of
{updated, 1} when is_integer(MaxConnections) ->
case ejabberd_sql:sql_query_t(
?SQL("select @(count(*))d from proxy65 "
"where jid_i=%(IJID)s")) of
{selected, [{Num}]} when Num > MaxConnections ->
ejabberd_sql:abort({limit, IPid, TPid});
{selected, _} ->
{ok, IPid, TPid};
Err ->
ejabberd_sql:abort(Err)
end;
{updated, _} ->
{ok, IPid, TPid};
Err ->
ejabberd_sql:abort(Err)
end
catch _:{bad_node, _} ->
{error, notfound}
end;
{selected, [{_, _, _, _, JID}]} when JID /= <<"">> ->
{error, conflict};
{selected, _} ->
{error, notfound};
Err ->
ejabberd_sql:abort(Err)
end
end,
case ejabberd_sql:sql_transaction(ejabberd_config:get_myname(), F) of
{atomic, Result} ->
Result;
{aborted, {limit, _, _} = Limit} ->
{error, Limit};
{aborted, Reason} ->
{error, Reason}
end.
%%%===================================================================
%%% Internal functions
%%%===================================================================
