%%%-------------------------------------------------------------------
%%% File : mod_muc_sql.erl
%%% Author : Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% Created : 13 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2019 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_muc_sql).
-behaviour(mod_muc).
-behaviour(mod_muc_room).
%% API
-export([init/2, store_room/5, restore_room/3, forget_room/3,
can_use_nick/4, get_rooms/2, get_nick/3, set_nick/4,
import/3, export/1]).
-export([register_online_room/4, unregister_online_room/4, find_online_room/3,
get_online_rooms/3, count_online_rooms/2, rsm_supported/0,
register_online_user/4, unregister_online_user/4,
count_online_rooms_by_user/3, get_online_rooms_by_user/3,
get_subscribed_rooms/3]).
-export([set_affiliation/6, set_affiliations/4, get_affiliation/5,
get_affiliations/3, search_affiliation/4]).
-include("jid.hrl").
-include("mod_muc.hrl").
-include("logger.hrl").
-include("ejabberd_sql_pt.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init(Host, Opts) ->
case gen_mod:ram_db_mod(Opts, mod_muc) of
?MODULE ->
clean_tables(Host);
_ ->
ok
end.
store_room(LServer, Host, Name, Opts, ChangesHints) ->
{Subs, Opts2} = case lists:keytake(subscribers, 1, Opts) of
{value, {subscribers, S}, OptN} -> {S, OptN};
_ -> {[], Opts}
end,
SOpts = misc:term_to_expr(Opts2),
F = fun () ->
?SQL_UPSERT_T(
"muc_room",
["!name=%(Name)s",
"!host=%(Host)s",
"server_host=%(LServer)s",
"opts=%(SOpts)s"]),
case ChangesHints of
Changes when is_list(Changes) ->
[change_room(Host, Name, Change) || Change <- Changes];
_ ->
ejabberd_sql:sql_query_t(
?SQL("delete from muc_room_subscribers where "
"room=%(Name)s and host=%(Host)s")),
[change_room(Host, Name, {add_subscription, JID, Nick, Nodes})
|| {JID, Nick, Nodes} <- Subs]
end
end,
ejabberd_sql:sql_transaction(LServer, F).
change_room(Host, Room, {add_subscription, JID, Nick, Nodes}) ->
SJID = jid:encode(JID),
SNodes = misc:term_to_expr(Nodes),
?SQL_UPSERT_T(
"muc_room_subscribers",
["!jid=%(SJID)s",
"!host=%(Host)s",
"!room=%(Room)s",
"nick=%(Nick)s",
"nodes=%(SNodes)s"]);
change_room(Host, Room, {del_subscription, JID}) ->
SJID = jid:encode(JID),
ejabberd_sql:sql_query_t(?SQL("delete from muc_room_subscribers where "
"room=%(Room)s and host=%(Host)s and jid=%(SJID)s"));
change_room(Host, Room, Change) ->
?ERROR_MSG("Unsupported change on room ~ts@~ts: ~p", [Room, Host, Change]).
restore_room(LServer, Host, Name) ->
case catch ejabberd_sql:sql_query(
LServer,
?SQL("select @(opts)s from muc_room where name=%(Name)s"
" and host=%(Host)s")) of
{selected, [{Opts}]} ->
OptsD = ejabberd_sql:decode_term(Opts),
case catch ejabberd_sql:sql_query(
LServer,
?SQL("select @(jid)s, @(nick)s, @(nodes)s from muc_room_subscribers where room=%(Name)s"
" and host=%(Host)s")) of
{selected, []} ->
OptsR = mod_muc:opts_to_binary(OptsD),
case lists:keymember(subscribers, 1, OptsD) of
true ->
store_room(LServer, Host, Name, OptsR, undefined);
_ ->
ok
end,
OptsR;
{selected, Subs} ->
SubData = lists:map(
fun({Jid, Nick, Nodes}) ->
{jid:decode(Jid), Nick, ejabberd_sql:decode_term(Nodes)}
end, Subs),
Opts2 = lists:keystore(subscribers, 1, OptsD, {subscribers, SubData}),
mod_muc:opts_to_binary(Opts2);
_ ->
error
end;
_ ->
error
end.
forget_room(LServer, Host, Name) ->
F = fun () ->
ejabberd_sql:sql_query_t(
?SQL("delete from muc_room where name=%(Name)s"
" and host=%(Host)s")),
ejabberd_sql:sql_query_t(
?SQL("delete from muc_room_subscribers where room=%(Name)s"
" and host=%(Host)s"))
end,
ejabberd_sql:sql_transaction(LServer, F).
can_use_nick(LServer, Host, JID, Nick) ->
SJID = jid:encode(jid:tolower(jid:remove_resource(JID))),
case catch ejabberd_sql:sql_query(
LServer,
?SQL("select @(jid)s from muc_registered "
"where nick=%(Nick)s"
" and host=%(Host)s")) of
{selected, [{SJID1}]} -> SJID == SJID1;
_ -> true
end.
get_rooms(LServer, Host) ->
case catch ejabberd_sql:sql_query(
LServer,
?SQL("select @(name)s, @(opts)s from muc_room"
" where host=%(Host)s")) of
{selected, RoomOpts} ->
case catch ejabberd_sql:sql_query(
LServer,
?SQL("select @(room)s, @(jid)s, @(nick)s, @(nodes)s from muc_room_subscribers"
" where host=%(Host)s")) of
{selected, Subs} ->
SubsD = lists:foldl(
fun({Room, Jid, Nick, Nodes}, Dict) ->
dict:append(Room, {jid:decode(Jid),
Nick, ejabberd_sql:decode_term(Nodes)}, Dict)
end, dict:new(), Subs),
lists:map(
fun({Room, Opts}) ->
OptsD = ejabberd_sql:decode_term(Opts),
OptsD2 = case {dict:find(Room, SubsD), lists:keymember(subscribers, 1, OptsD)} of
{_, true} ->
store_room(LServer, Host, Room, mod_muc:opts_to_binary(OptsD), undefined),
OptsD;
{{ok, SubsI}, false} ->
lists:keystore(subscribers, 1, OptsD, {subscribers, SubsI});
_ ->
OptsD
end,
#muc_room{name_host = {Room, Host},
opts = mod_muc:opts_to_binary(OptsD2)}
end, RoomOpts);
_Err ->
[]
end;
_Err ->
[]
end.
get_nick(LServer, Host, From) ->
SJID = jid:encode(jid:tolower(jid:remove_resource(From))),
case catch ejabberd_sql:sql_query(
LServer,
?SQL("select @(nick)s from muc_registered where"
" jid=%(SJID)s and host=%(Host)s")) of
{selected, [{Nick}]} -> Nick;
_ -> error
end.
set_nick(LServer, Host, From, Nick) ->
JID = jid:encode(jid:tolower(jid:remove_resource(From))),
F = fun () ->
case Nick of
<<"">> ->
ejabberd_sql:sql_query_t(
?SQL("delete from muc_registered where"
" jid=%(JID)s and host=%(Host)s")),
ok;
_ ->
Allow = case ejabberd_sql:sql_query_t(
?SQL("select @(jid)s from muc_registered"
" where nick=%(Nick)s"
" and host=%(Host)s")) of
{selected, [{J}]} -> J == JID;
_ -> true
end,
if Allow ->
?SQL_UPSERT_T(
"muc_registered",
["!jid=%(JID)s",
"!host=%(Host)s",
"server_host=%(LServer)s",
"nick=%(Nick)s"]),
ok;
true ->
false
end
end
end,
ejabberd_sql:sql_transaction(LServer, F).
set_affiliation(_ServerHost, _Room, _Host, _JID, _Affiliation, _Reason) ->
{error, not_implemented}.
set_affiliations(_ServerHost, _Room, _Host, _Affiliations) ->
{error, not_implemented}.
get_affiliation(_ServerHost, _Room, _Host, _LUser, _LServer) ->
{error, not_implemented}.
get_affiliations(_ServerHost, _Room, _Host) ->
{error, not_implemented}.
search_affiliation(_ServerHost, _Room, _Host, _Affiliation) ->
{error, not_implemented}.
register_online_room(ServerHost, Room, Host, Pid) ->
PidS = misc:encode_pid(Pid),
NodeS = erlang:atom_to_binary(node(Pid), latin1),
case ?SQL_UPSERT(ServerHost,
"muc_online_room",
["!name=%(Room)s",
"!host=%(Host)s",
"server_host=%(ServerHost)s",
"node=%(NodeS)s",
"pid=%(PidS)s"]) of
ok ->
ok;
Err ->
Err
end.
unregister_online_room(ServerHost, Room, Host, Pid) ->
%% TODO: report errors
PidS = misc:encode_pid(Pid),
NodeS = erlang:atom_to_binary(node(Pid), latin1),
ejabberd_sql:sql_query(
ServerHost,
?SQL("delete from muc_online_room where name=%(Room)s and "
"host=%(Host)s and node=%(NodeS)s and pid=%(PidS)s")).
find_online_room(ServerHost, Room, Host) ->
case ejabberd_sql:sql_query(
ServerHost,
?SQL("select @(pid)s, @(node)s from muc_online_room where "
"name=%(Room)s and host=%(Host)s")) of
{selected, [{PidS, NodeS}]} ->
try {ok, misc:decode_pid(PidS, NodeS)}
catch _:{bad_node, _} -> error
end;
{selected, []} ->
error;
_Err ->
error
end.
count_online_rooms(ServerHost, Host) ->
case ejabberd_sql:sql_query(
ServerHost,
?SQL("select @(count(*))d from muc_online_room "
"where host=%(Host)s")) of
{selected, [{Num}]} ->
Num;
_Err ->
0
end.
get_online_rooms(ServerHost, Host, _RSM) ->
case ejabberd_sql:sql_query(
ServerHost,
?SQL("select @(name)s, @(pid)s, @(node)s from muc_online_room "
"where host=%(Host)s")) of
{selected, Rows} ->
lists:flatmap(
fun({Room, PidS, NodeS}) ->
try [{Room, Host, misc:decode_pid(PidS, NodeS)}]
catch _:{bad_node, _} -> []
end
end, Rows);
_Err ->
[]
end.
rsm_supported() ->
false.
register_online_user(ServerHost, {U, S, R}, Room, Host) ->
NodeS = erlang:atom_to_binary(node(), latin1),
case ?SQL_UPSERT(ServerHost, "muc_online_users",
["!username=%(U)s",
"!server=%(S)s",
"!resource=%(R)s",
"!name=%(Room)s",
"!host=%(Host)s",
"server_host=%(ServerHost)s",
"node=%(NodeS)s"]) of
ok ->
ok;
Err ->
Err
end.
unregister_online_user(ServerHost, {U, S, R}, Room, Host) ->
%% TODO: report errors
ejabberd_sql:sql_query(
ServerHost,
?SQL("delete from muc_online_users where username=%(U)s and "
"server=%(S)s and resource=%(R)s and name=%(Room)s and "
"host=%(Host)s")).
count_online_rooms_by_user(ServerHost, U, S) ->
case ejabberd_sql:sql_query(
ServerHost,
?SQL("select @(count(*))d from muc_online_users where "
"username=%(U)s and server=%(S)s")) of
{selected, [{Num}]} ->
Num;
_Err ->
0
end.
get_online_rooms_by_user(ServerHost, U, S) ->
case ejabberd_sql:sql_query(
ServerHost,
?SQL("select @(name)s, @(host)s from muc_online_users where "
"username=%(U)s and server=%(S)s")) of
{selected, Rows} ->
Rows;
_Err ->
[]
end.
export(_Server) ->
[{muc_room,
fun(Host, #muc_room{name_host = {Name, RoomHost}, opts = Opts}) ->
case str:suffix(Host, RoomHost) of
true ->
SOpts = misc:term_to_expr(Opts),
[?SQL("delete from muc_room where name=%(Name)s"
" and host=%(RoomHost)s;"),
?SQL_INSERT(
"muc_room",
["name=%(Name)s",
"host=%(RoomHost)s",
"server_host=%(Host)s",
"opts=%(SOpts)s"])];
false ->
[]
end
end},
{muc_registered,
fun(Host, #muc_registered{us_host = {{U, S}, RoomHost},
nick = Nick}) ->
case str:suffix(Host, RoomHost) of
true ->
SJID = jid:encode(jid:make(U, S)),
[?SQL("delete from muc_registered where"
" jid=%(SJID)s and host=%(RoomHost)s;"),
?SQL_INSERT(
"muc_registered",
["jid=%(SJID)s",
"host=%(RoomHost)s",
"server_host=%(Host)s",
"nick=%(Nick)s"])];
false ->
[]
end
end}].
import(_, _, _) ->
ok.
get_subscribed_rooms(LServer, Host, Jid) ->
JidS = jid:encode(Jid),
case ejabberd_sql:sql_query(
LServer,
?SQL("select @(room)s, @(nodes)s from muc_room_subscribers "
"where jid=%(JidS)s and host=%(Host)s")) of
{selected, Subs} ->
{ok, [{jid:make(Room, Host), ejabberd_sql:decode_term(Nodes)}
|| {Room, Nodes} <- Subs]};
_Error ->
{error, db_failure}
end.
%%%===================================================================
%%% Internal functions
%%%===================================================================
clean_tables(ServerHost) ->
NodeS = erlang:atom_to_binary(node(), latin1),
?DEBUG("Cleaning SQL muc_online_room table...", []),
case ejabberd_sql:sql_query(
ServerHost,
?SQL("delete from muc_online_room where node=%(NodeS)s")) of
{updated, _} ->
ok;
Err1 ->
?ERROR_MSG("Failed to clean 'muc_online_room' table: ~p", [Err1]),
Err1
end,
?DEBUG("Cleaning SQL muc_online_users table...", []),
case ejabberd_sql:sql_query(
ServerHost,
?SQL("delete from muc_online_users where node=%(NodeS)s")) of
{updated, _} ->
ok;
Err2 ->
?ERROR_MSG("Failed to clean 'muc_online_users' table: ~p", [Err2]),
Err2
end.
