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%%%-------------------------------------------------------------------
%%% File : mod_private_sql.erl
%%% Author : Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% Created : 13 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2017 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_private_sql).
-compile([{parse_transform, ejabberd_sql_pt}]).
-behaviour(mod_private).
%% API
-export([init/2, set_data/3, get_data/3, get_all_data/2, del_data/2,
import/3, export/1]).
-include("xmpp.hrl").
-include("mod_private.hrl").
-include("ejabberd_sql_pt.hrl").
-include("logger.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init(_Host, _Opts) ->
ok.
set_data(LUser, LServer, Data) ->
F = fun() ->
lists:foreach(
fun({XMLNS, El}) ->
SData = fxml:element_to_binary(El),
?SQL_UPSERT_T(
"private_storage",
["!username=%(LUser)s",
"!server_host=%(LServer)s",
"!namespace=%(XMLNS)s",
"data=%(SData)s"])
end, Data)
end,
case ejabberd_sql:sql_transaction(LServer, F) of
{atomic, ok} ->
ok;
_ ->
{error, db_failure}
end.
get_data(LUser, LServer, XMLNS) ->
case ejabberd_sql:sql_query(
LServer,
?SQL("select @(data)s from private_storage"
" where username=%(LUser)s and %(LServer)H"
" and namespace=%(XMLNS)s")) of
{selected, [{SData}]} ->
parse_element(LUser, LServer, SData);
{selected, []} ->
error;
_ ->
{error, db_failure}
end.
get_all_data(LUser, LServer) ->
case ejabberd_sql:sql_query(
LServer,
?SQL("select @(namespace)s, @(data)s from private_storage"
" where username=%(LUser)s and %(LServer)H")) of
{selected, []} ->
error;
{selected, Res} ->
{ok, lists:flatmap(
fun({_, SData}) ->
case parse_element(LUser, LServer, SData) of
{ok, El} -> [El];
error -> []
end
end, Res)};
_ ->
{error, db_failure}
end.
del_data(LUser, LServer) ->
case ejabberd_sql:sql_query(
LServer,
?SQL("delete from private_storage"
" where username=%(LUser)s and %(LServer)H")) of
{updated, _} ->
ok;
_ ->
{error, db_failure}
end.
export(_Server) ->
[{private_storage,
fun(Host, #private_storage{usns = {LUser, LServer, XMLNS},
xml = Data})
when LServer == Host ->
SData = fxml:element_to_binary(Data),
[?SQL("delete from private_storage where"
" username=%(LUser)s and %(LServer)H and namespace=%(XMLNS)s;"),
?SQL_INSERT(
"private_storage",
["username=%(LUser)s",
"server_host=%(LServer)s",
"namespace=%(XMLNS)s",
"data=%(SData)s"])];
(_Host, _R) ->
[]
end}].
import(_, _, _) ->
ok.
%%%===================================================================
%%% Internal functions
%%%===================================================================
parse_element(LUser, LServer, XML) ->
case fxml_stream:parse_element(XML) of
El when is_record(El, xmlel) ->
{ok, El};
_ ->
?ERROR_MSG("malformed XML element in SQL table "
"'private_storage' for user ~s@~s: ~s",
[LUser, LServer, XML]),
error
end.
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