%%%-------------------------------------------------------------------
%%% File : mod_caps_sql.erl
%%% Author : Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% Created : 13 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2022 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_caps_sql).
-behaviour(mod_caps).
%% API
-export([init/2, caps_read/2, caps_write/3, export/1, import/3]).
-include("mod_caps.hrl").
-include("ejabberd_sql_pt.hrl").
-include("logger.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init(_Host, _Opts) ->
ok.
caps_read(LServer, {Node, SubNode}) ->
case ejabberd_sql:sql_query(
LServer,
?SQL("select @(feature)s from caps_features where"
" node=%(Node)s and subnode=%(SubNode)s")) of
{selected, [{H}|_] = Fs} ->
case catch binary_to_integer(H) of
Int when is_integer(Int), Int>=0 ->
{ok, Int};
_ ->
{ok, [F || {F} <- Fs]}
end;
_ ->
error
end.
caps_write(LServer, NodePair, Features) ->
case ejabberd_sql:sql_transaction(
LServer,
sql_write_features_t(NodePair, Features)) of
{atomic, _} ->
ok;
{aborted, _Reason} ->
{error, db_failure}
end.
export(_Server) ->
[{caps_features,
fun(_Host, #caps_features{node_pair = NodePair,
features = Features}) ->
sql_write_features_t(NodePair, Features);
(_Host, _R) ->
[]
end}].
import(_, _, _) ->
ok.
%%%===================================================================
%%% Internal functions
%%%===================================================================
sql_write_features_t({Node, SubNode}, Features) ->
NewFeatures = if is_integer(Features) ->
[integer_to_binary(Features)];
true ->
Features
end,
[?SQL("delete from caps_features where node=%(Node)s"
" and subnode=%(SubNode)s;") |
[?SQL("insert into caps_features(node, subnode, feature)"
" values (%(Node)s, %(SubNode)s, %(F)s);") || F <- NewFeatures]].
