380 lines
12 KiB
Erlang
380 lines
12 KiB
Erlang
%%%-------------------------------------------------------------------
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%%% File : mod_muc_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) 2002-2017 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_muc_sql).
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-compile([{parse_transform, ejabberd_sql_pt}]).
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-behaviour(mod_muc).
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-behaviour(mod_muc_room).
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%% API
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-export([init/2, store_room/4, restore_room/3, forget_room/3,
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can_use_nick/4, get_rooms/2, get_nick/3, set_nick/4,
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import/3, export/1]).
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-export([register_online_room/4, unregister_online_room/4, find_online_room/3,
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get_online_rooms/3, count_online_rooms/2, rsm_supported/0,
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register_online_user/4, unregister_online_user/4,
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count_online_rooms_by_user/3, get_online_rooms_by_user/3]).
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-export([set_affiliation/6, set_affiliations/4, get_affiliation/5,
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get_affiliations/3, search_affiliation/4]).
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-include("jid.hrl").
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-include("mod_muc.hrl").
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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(Host, Opts) ->
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case gen_mod:ram_db_mod(Host, Opts, mod_muc) of
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?MODULE ->
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clean_tables(Host);
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_ ->
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ok
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end.
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store_room(LServer, Host, Name, Opts) ->
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SOpts = jlib:term_to_expr(Opts),
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F = fun () ->
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?SQL_UPSERT_T(
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"muc_room",
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["!name=%(Name)s",
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"!host=%(Host)s",
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"opts=%(SOpts)s"])
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end,
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ejabberd_sql:sql_transaction(LServer, F).
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restore_room(LServer, Host, Name) ->
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case catch ejabberd_sql:sql_query(
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LServer,
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?SQL("select @(opts)s from muc_room where name=%(Name)s"
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" and host=%(Host)s")) of
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{selected, [{Opts}]} ->
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mod_muc:opts_to_binary(ejabberd_sql:decode_term(Opts));
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_ ->
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error
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end.
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forget_room(LServer, Host, Name) ->
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F = fun () ->
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ejabberd_sql:sql_query_t(
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?SQL("delete from muc_room where name=%(Name)s"
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" and host=%(Host)s"))
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end,
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ejabberd_sql:sql_transaction(LServer, F).
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can_use_nick(LServer, Host, JID, Nick) ->
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SJID = jid:encode(jid:tolower(jid:remove_resource(JID))),
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case catch ejabberd_sql:sql_query(
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LServer,
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?SQL("select @(jid)s from muc_registered "
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"where nick=%(Nick)s"
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" and host=%(Host)s")) of
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{selected, [{SJID1}]} -> SJID == SJID1;
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_ -> true
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end.
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get_rooms(LServer, Host) ->
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case catch ejabberd_sql:sql_query(
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LServer,
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?SQL("select @(name)s, @(opts)s from muc_room"
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" where host=%(Host)s")) of
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{selected, RoomOpts} ->
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lists:map(
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fun({Room, Opts}) ->
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#muc_room{name_host = {Room, Host},
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opts = mod_muc:opts_to_binary(
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ejabberd_sql:decode_term(Opts))}
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end, RoomOpts);
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Err ->
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?ERROR_MSG("failed to get rooms: ~p", [Err]),
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[]
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end.
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get_nick(LServer, Host, From) ->
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SJID = jid:encode(jid:tolower(jid:remove_resource(From))),
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case catch ejabberd_sql:sql_query(
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LServer,
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?SQL("select @(nick)s from muc_registered where"
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" jid=%(SJID)s and host=%(Host)s")) of
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{selected, [{Nick}]} -> Nick;
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_ -> error
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end.
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set_nick(LServer, Host, From, Nick) ->
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JID = jid:encode(jid:tolower(jid:remove_resource(From))),
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F = fun () ->
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case Nick of
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<<"">> ->
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ejabberd_sql:sql_query_t(
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?SQL("delete from muc_registered where"
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" jid=%(JID)s and host=%(Host)s")),
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ok;
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_ ->
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Allow = case ejabberd_sql:sql_query_t(
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?SQL("select @(jid)s from muc_registered"
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" where nick=%(Nick)s"
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" and host=%(Host)s")) of
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{selected, [{J}]} -> J == JID;
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_ -> true
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end,
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if Allow ->
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?SQL_UPSERT_T(
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"muc_registered",
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["!jid=%(JID)s",
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"!host=%(Host)s",
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"nick=%(Nick)s"]),
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ok;
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true ->
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false
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end
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end
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end,
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ejabberd_sql:sql_transaction(LServer, F).
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set_affiliation(_ServerHost, _Room, _Host, _JID, _Affiliation, _Reason) ->
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{error, not_implemented}.
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set_affiliations(_ServerHost, _Room, _Host, _Affiliations) ->
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{error, not_implemented}.
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get_affiliation(_ServerHost, _Room, _Host, _LUser, _LServer) ->
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{error, not_implemented}.
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get_affiliations(_ServerHost, _Room, _Host) ->
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{error, not_implemented}.
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search_affiliation(_ServerHost, _Room, _Host, _Affiliation) ->
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{error, not_implemented}.
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register_online_room(ServerHost, Room, Host, Pid) ->
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PidS = enc_pid(Pid),
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NodeS = erlang:atom_to_binary(node(Pid), latin1),
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case ?SQL_UPSERT(ServerHost,
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"muc_online_room",
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["!name=%(Room)s",
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"!host=%(Host)s",
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"node=%(NodeS)s",
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"pid=%(PidS)s"]) of
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ok ->
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ok;
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Err ->
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?ERROR_MSG("failed to update 'muc_online_room': ~p", [Err]),
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Err
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end.
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unregister_online_room(ServerHost, Room, Host, Pid) ->
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%% TODO: report errors
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PidS = enc_pid(Pid),
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NodeS = erlang:atom_to_binary(node(Pid), latin1),
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ejabberd_sql:sql_query(
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ServerHost,
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?SQL("delete from muc_online_room where name=%(Room)s and "
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"host=%(Host)s and node=%(NodeS)s and pid=%(PidS)s")).
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find_online_room(ServerHost, Room, Host) ->
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case ejabberd_sql:sql_query(
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ServerHost,
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?SQL("select @(pid)s, @(node)s from muc_online_room where "
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"name=%(Room)s and host=%(Host)s")) of
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{selected, [{PidS, NodeS}]} ->
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try {ok, dec_pid(PidS, NodeS)}
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catch _:{node_down, _} -> error
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end;
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{selected, []} ->
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error;
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Err ->
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?ERROR_MSG("failed to select 'muc_online_room': ~p", [Err]),
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error
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end.
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count_online_rooms(ServerHost, Host) ->
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case ejabberd_sql:sql_query(
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ServerHost,
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?SQL("select @(count(*))d from muc_online_room "
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"where host=%(Host)s")) of
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{selected, [{Num}]} ->
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Num;
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Err ->
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?ERROR_MSG("failed to select 'muc_online_room': ~p", [Err]),
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0
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end.
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get_online_rooms(ServerHost, Host, _RSM) ->
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case ejabberd_sql:sql_query(
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ServerHost,
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?SQL("select @(name)s, @(pid)s, @(node)s from muc_online_room "
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"where host=%(Host)s")) of
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{selected, Rows} ->
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lists:flatmap(
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fun({Room, PidS, NodeS}) ->
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try [{Room, Host, dec_pid(PidS, NodeS)}]
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catch _:{node_down, _} -> []
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end
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end, Rows);
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Err ->
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?ERROR_MSG("failed to select 'muc_online_room': ~p", [Err]),
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0
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end.
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rsm_supported() ->
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false.
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register_online_user(ServerHost, {U, S, R}, Room, Host) ->
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NodeS = erlang:atom_to_binary(node(), latin1),
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case ?SQL_UPSERT(ServerHost, "muc_online_users",
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["!username=%(U)s",
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"!server=%(S)s",
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"!resource=%(R)s",
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"!name=%(Room)s",
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"!host=%(Host)s",
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"node=%(NodeS)s"]) of
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ok ->
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ok;
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Err ->
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?ERROR_MSG("failed to update 'muc_online_users': ~p", [Err]),
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Err
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end.
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unregister_online_user(ServerHost, {U, S, R}, Room, Host) ->
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%% TODO: report errors
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ejabberd_sql:sql_query(
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ServerHost,
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?SQL("delete from muc_online_users where username=%(U)s and "
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"server=%(S)s and resource=%(R)s and name=%(Room)s and "
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"host=%(Host)s")).
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count_online_rooms_by_user(ServerHost, U, S) ->
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case ejabberd_sql:sql_query(
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ServerHost,
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?SQL("select @(count(*))d from muc_online_users where "
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"username=%(U)s and server=%(S)s")) of
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{selected, [{Num}]} ->
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Num;
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Err ->
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?ERROR_MSG("failed to select 'muc_online_users': ~p", [Err]),
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0
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end.
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get_online_rooms_by_user(ServerHost, U, S) ->
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case ejabberd_sql:sql_query(
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ServerHost,
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?SQL("select @(name)s, @(host)s from muc_online_users where "
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"username=%(U)s and server=%(S)s")) of
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{selected, Rows} ->
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Rows;
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Err ->
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?ERROR_MSG("failed to select 'muc_online_users': ~p", [Err]),
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[]
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end.
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export(_Server) ->
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[{muc_room,
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fun(Host, #muc_room{name_host = {Name, RoomHost}, opts = Opts}) ->
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case str:suffix(Host, RoomHost) of
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true ->
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SOpts = jlib:term_to_expr(Opts),
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[?SQL("delete from muc_room where name=%(Name)s"
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" and host=%(RoomHost)s;"),
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?SQL("insert into muc_room(name, host, opts) "
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"values ("
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"%(Name)s, %(RoomHost)s, %(SOpts)s);")];
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false ->
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[]
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end
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end},
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{muc_registered,
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fun(Host, #muc_registered{us_host = {{U, S}, RoomHost},
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nick = Nick}) ->
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case str:suffix(Host, RoomHost) of
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true ->
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SJID = jid:encode(jid:make(U, S)),
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[?SQL("delete from muc_registered where"
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" jid=%(SJID)s and host=%(RoomHost)s;"),
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?SQL("insert into muc_registered(jid, host, "
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"nick) values ("
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"%(SJID)s, %(RoomHost)s, %(Nick)s);")];
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false ->
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[]
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end
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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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-spec enc_pid(pid()) -> binary().
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enc_pid(Pid) ->
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list_to_binary(erlang:pid_to_list(Pid)).
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-spec dec_pid(binary(), binary()) -> pid().
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dec_pid(PidBin, NodeBin) ->
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PidStr = binary_to_list(PidBin),
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Pid = erlang:list_to_pid(PidStr),
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case erlang:binary_to_atom(NodeBin, latin1) of
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Node when Node == node() ->
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Pid;
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Node ->
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try set_node_id(PidStr, NodeBin)
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catch _:badarg ->
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erlang:error({node_down, Node})
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end
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end.
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-spec set_node_id(string(), binary()) -> pid().
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set_node_id(PidStr, NodeBin) ->
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ExtPidStr = erlang:pid_to_list(
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binary_to_term(
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<<131,103,100,(size(NodeBin)):16,NodeBin/binary,0:72>>)),
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[H|_] = string:tokens(ExtPidStr, "."),
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[_|T] = string:tokens(PidStr, "."),
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erlang:list_to_pid(string:join([H|T], ".")).
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clean_tables(ServerHost) ->
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NodeS = erlang:atom_to_binary(node(), latin1),
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?INFO_MSG("Cleaning SQL muc_online_room table...", []),
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case ejabberd_sql:sql_query(
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ServerHost,
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?SQL("delete from muc_online_room where node=%(NodeS)s")) of
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{updated, _} ->
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ok;
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Err1 ->
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?ERROR_MSG("failed to clean 'muc_online_room' table: ~p", [Err1]),
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Err1
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end,
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?INFO_MSG("Cleaning SQL muc_online_users table...", []),
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case ejabberd_sql:sql_query(
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ServerHost,
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?SQL("delete from muc_online_users where node=%(NodeS)s")) of
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{updated, _} ->
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ok;
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Err2 ->
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?ERROR_MSG("failed to clean 'muc_online_users' table: ~p", [Err2]),
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Err2
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end.
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