mirror of
https://github.com/processone/ejabberd.git
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162 lines
4.9 KiB
Erlang
162 lines
4.9 KiB
Erlang
%%%-------------------------------------------------------------------
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%%% File : mod_announce_sql.erl
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%%% Author : Evgeny Khramtsov <ekhramtsov@process-one.net>
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%%% Created : 13 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2018 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_announce_sql).
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-behaviour(mod_announce).
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-compile([{parse_transform, ejabberd_sql_pt}]).
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%% API
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-export([init/2, set_motd_users/2, set_motd/2, delete_motd/1,
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get_motd/1, is_motd_user/2, set_motd_user/2, import/3,
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export/1]).
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-include("xmpp.hrl").
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-include("mod_announce.hrl").
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-include("ejabberd_sql_pt.hrl").
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-include("logger.hrl").
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%%%===================================================================
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%%% API
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%%%===================================================================
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init(_Host, _Opts) ->
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ok.
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set_motd_users(LServer, USRs) ->
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F = fun() ->
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lists:foreach(
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fun({U, _S, _R}) ->
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?SQL_UPSERT_T(
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"motd",
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["!username=%(U)s",
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"!server_host=%(LServer)s",
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"xml=''"])
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end, USRs)
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end,
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transaction(LServer, F).
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set_motd(LServer, Packet) ->
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XML = fxml:element_to_binary(Packet),
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F = fun() ->
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?SQL_UPSERT_T(
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"motd",
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["!username=''",
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"!server_host=%(LServer)s",
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"xml=%(XML)s"])
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end,
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transaction(LServer, F).
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delete_motd(LServer) ->
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F = fun() ->
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ejabberd_sql:sql_query_t(
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?SQL("delete from motd where %(LServer)H"))
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end,
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transaction(LServer, F).
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get_motd(LServer) ->
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case catch ejabberd_sql:sql_query(
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LServer,
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?SQL("select @(xml)s from motd"
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" where username='' and %(LServer)H")) of
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{selected, [{XML}]} ->
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parse_element(XML);
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{selected, []} ->
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error;
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_ ->
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{error, db_failure}
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end.
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is_motd_user(LUser, LServer) ->
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case catch ejabberd_sql:sql_query(
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LServer,
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?SQL("select @(username)s from motd"
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" where username=%(LUser)s and %(LServer)H")) of
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{selected, [_|_]} ->
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{ok, true};
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{selected, []} ->
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{ok, false};
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_ ->
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{error, db_failure}
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end.
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set_motd_user(LUser, LServer) ->
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F = fun() ->
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?SQL_UPSERT_T(
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"motd",
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["!username=%(LUser)s",
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"!server_host=%(LServer)s",
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"xml=''"])
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end,
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transaction(LServer, F).
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export(_Server) ->
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[{motd,
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fun(Host, #motd{server = LServer, packet = El})
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when LServer == Host ->
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XML = fxml:element_to_binary(El),
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[?SQL("delete from motd where username='' and %(LServer)H;"),
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?SQL_INSERT(
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"motd",
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["username=''",
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"server_host=%(LServer)s",
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"xml=%(XML)s"])];
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(_Host, _R) ->
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[]
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end},
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{motd_users,
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fun(Host, #motd_users{us = {LUser, LServer}})
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when LServer == Host, LUser /= <<"">> ->
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[?SQL("delete from motd where username=%(LUser)s and %(LServer)H;"),
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?SQL_INSERT(
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"motd",
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["username=%(LUser)s",
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"server_host=%(LServer)s",
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"xml=''"])];
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(_Host, _R) ->
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[]
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end}].
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import(_, _, _) ->
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ok.
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%%%===================================================================
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%%% Internal functions
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%%%===================================================================
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transaction(LServer, F) ->
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case ejabberd_sql:sql_transaction(LServer, F) of
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{atomic, _} -> ok;
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_ -> {error, db_failure}
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end.
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parse_element(XML) ->
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case fxml_stream:parse_element(XML) of
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El when is_record(El, xmlel) ->
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{ok, El};
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_ ->
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?ERROR_MSG("malformed XML element in SQL table "
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"'motd' for username='': ~s", [XML]),
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{error, db_failure}
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end.
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