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|
%%%-------------------------------------------------------------------
%%% File : mod_roster_mnesia.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_roster_mnesia).
-behaviour(mod_roster).
%% API
-export([init/2, read_roster_version/2, write_roster_version/4,
get_roster/2, get_roster_item/3, roster_subscribe/4,
remove_user/2, update_roster/4, del_roster/3, transaction/2,
read_subscription_and_groups/3, import/3, create_roster/1,
process_rosteritems/5,
use_cache/2]).
-export([need_transform/1, transform/1]).
-include("mod_roster.hrl").
-include("logger.hrl").
-include_lib("xmpp/include/xmpp.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init(_Host, _Opts) ->
ejabberd_mnesia:create(?MODULE, roster,
[{disc_only_copies, [node()]},
{attributes, record_info(fields, roster)},
{index, [us]}]),
ejabberd_mnesia:create(?MODULE, roster_version,
[{disc_only_copies, [node()]},
{attributes,
record_info(fields, roster_version)}]).
use_cache(Host, Table) ->
case mnesia:table_info(Table, storage_type) of
disc_only_copies ->
mod_roster_opt:use_cache(Host);
_ ->
false
end.
read_roster_version(LUser, LServer) ->
US = {LUser, LServer},
case mnesia:dirty_read(roster_version, US) of
[#roster_version{version = V}] -> {ok, V};
[] -> error
end.
write_roster_version(LUser, LServer, InTransaction, Ver) ->
US = {LUser, LServer},
if InTransaction ->
mnesia:write(#roster_version{us = US, version = Ver});
true ->
mnesia:dirty_write(#roster_version{us = US, version = Ver})
end.
get_roster(LUser, LServer) ->
{ok, mnesia:dirty_index_read(roster, {LUser, LServer}, #roster.us)}.
get_roster_item(LUser, LServer, LJID) ->
case mnesia:read({roster, {LUser, LServer, LJID}}) of
[I] -> {ok, I};
[] -> error
end.
roster_subscribe(_LUser, _LServer, _LJID, Item) ->
mnesia:write(Item).
remove_user(LUser, LServer) ->
US = {LUser, LServer},
F = fun () ->
lists:foreach(
fun (R) -> mnesia:delete_object(R) end,
mnesia:index_read(roster, US, #roster.us))
end,
mnesia:transaction(F).
update_roster(_LUser, _LServer, _LJID, Item) ->
mnesia:write(Item).
del_roster(LUser, LServer, LJID) ->
mnesia:delete({roster, {LUser, LServer, LJID}}).
read_subscription_and_groups(LUser, LServer, LJID) ->
case mnesia:dirty_read(roster, {LUser, LServer, LJID}) of
[#roster{subscription = Subscription, ask = Ask, groups = Groups}] ->
{ok, {Subscription, Ask, Groups}};
_ ->
error
end.
transaction(_LServer, F) ->
mnesia:transaction(F).
create_roster(RItem) ->
mnesia:dirty_write(RItem).
import(_LServer, <<"rosterusers">>, #roster{} = R) ->
mnesia:dirty_write(R);
import(LServer, <<"roster_version">>, [LUser, Ver]) ->
RV = #roster_version{us = {LUser, LServer}, version = Ver},
mnesia:dirty_write(RV).
need_transform({roster, {U, S, _}, _, _, _, _, _, _, _, _})
when is_list(U) orelse is_list(S) ->
?INFO_MSG("Mnesia table 'roster' will be converted to binary", []),
true;
need_transform({roster_version, {U, S}, Ver})
when is_list(U) orelse is_list(S) orelse is_list(Ver) ->
?INFO_MSG("Mnesia table 'roster_version' will be converted to binary", []),
true;
need_transform(_) ->
false.
transform(#roster{usj = {U, S, {LU, LS, LR}},
us = {U1, S1},
jid = {U2, S2, R2},
name = Name,
groups = Gs,
askmessage = Ask,
xs = Xs} = R) ->
R#roster{usj = {iolist_to_binary(U), iolist_to_binary(S),
{iolist_to_binary(LU),
iolist_to_binary(LS),
iolist_to_binary(LR)}},
us = {iolist_to_binary(U1), iolist_to_binary(S1)},
jid = {iolist_to_binary(U2),
iolist_to_binary(S2),
iolist_to_binary(R2)},
name = iolist_to_binary(Name),
groups = [iolist_to_binary(G) || G <- Gs],
askmessage = try iolist_to_binary(Ask)
catch _:_ -> <<"">> end,
xs = [fxml:to_xmlel(X) || X <- Xs]};
transform(#roster_version{us = {U, S}, version = Ver} = R) ->
R#roster_version{us = {iolist_to_binary(U), iolist_to_binary(S)},
version = iolist_to_binary(Ver)}.
%%%===================================================================
process_rosteritems(ActionS, SubsS, AsksS, UsersS, ContactsS) ->
Action = case ActionS of
"list" -> list;
"delete" -> delete
end,
Subs = lists:foldl(
fun(any, _) -> [none, from, to, both];
(Sub, Subs) -> [Sub | Subs]
end,
[],
[list_to_atom(S) || S <- string:tokens(SubsS, ":")]
),
Asks = lists:foldl(
fun(any, _) -> [none, out, in];
(Ask, Asks) -> [Ask | Asks]
end,
[],
[list_to_atom(S) || S <- string:tokens(AsksS, ":")]
),
Users = lists:foldl(
fun("any", _) -> ["*", "*@*"];
(U, Us) -> [U | Us]
end,
[],
[S || S <- string:tokens(UsersS, ":")]
),
Contacts = lists:foldl(
fun("any", _) -> ["*", "*@*"];
(U, Us) -> [U | Us]
end,
[],
[S || S <- string:tokens(ContactsS, ":")]
),
rosteritem_purge({Action, Subs, Asks, Users, Contacts}).
rosteritem_purge(Options) ->
Num_rosteritems = mnesia:table_info(roster, size),
io:format("There are ~p roster items in total.~n", [Num_rosteritems]),
Key = mnesia:dirty_first(roster),
rip(Key, Options, {0, Num_rosteritems, 0, 0}, []).
rip('$end_of_table', _Options, Counters, Res) ->
print_progress_line(Counters),
Res;
rip(Key, Options, {Pr, NT, NV, ND}, Res) ->
Key_next = mnesia:dirty_next(roster, Key),
{Action, _, _, _, _} = Options,
{ND2, Res2} = case decide_rip(Key, Options) of
true ->
Jids = apply_action(Action, Key),
{ND+1, [Jids | Res]};
false ->
{ND, Res}
end,
NV2 = NV+1,
Pr2 = print_progress_line({Pr, NT, NV2, ND2}),
rip(Key_next, Options, {Pr2, NT, NV2, ND2}, Res2).
apply_action(list, Key) ->
{User, Server, JID} = Key,
{RUser, RServer, _} = JID,
Jid1string = <<User/binary, "@", Server/binary>>,
Jid2string = <<RUser/binary, "@", RServer/binary>>,
io:format("Matches: ~ts ~ts~n", [Jid1string, Jid2string]),
{Jid1string, Jid2string};
apply_action(delete, Key) ->
R = apply_action(list, Key),
mnesia:dirty_delete(roster, Key),
R.
print_progress_line({_Pr, 0, _NV, _ND}) ->
ok;
print_progress_line({Pr, NT, NV, ND}) ->
Pr2 = trunc((NV/NT)*100),
case Pr == Pr2 of
true ->
ok;
false ->
io:format("Progress ~p% - visited ~p - deleted ~p~n", [Pr2, NV, ND])
end,
Pr2.
decide_rip(Key, {_Action, Subs, Asks, User, Contact}) ->
case catch mnesia:dirty_read(roster, Key) of
[RI] ->
lists:member(RI#roster.subscription, Subs)
andalso lists:member(RI#roster.ask, Asks)
andalso decide_rip_jid(RI#roster.us, User)
andalso decide_rip_jid(RI#roster.jid, Contact);
_ ->
false
end.
%% Returns true if the server of the JID is included in the servers
decide_rip_jid({UName, UServer, _UResource}, Match_list) ->
decide_rip_jid({UName, UServer}, Match_list);
decide_rip_jid({UName, UServer}, Match_list) ->
lists:any(
fun(Match_string) ->
MJID = jid:decode(list_to_binary(Match_string)),
MName = MJID#jid.luser,
MServer = MJID#jid.lserver,
Is_server = is_glob_match(UServer, MServer),
case MName of
<<>> when UName == <<>> ->
Is_server;
<<>> ->
false;
_ ->
Is_server
andalso is_glob_match(UName, MName)
end
end,
Match_list).
%% Copied from ejabberd-2.0.0/src/acl.erl
is_regexp_match(String, RegExp) ->
case ejabberd_regexp:run(String, RegExp) of
nomatch ->
false;
match ->
true;
{error, ErrDesc} ->
io:format(
"Wrong regexp ~p in ACL: ~p",
[RegExp, ErrDesc]),
false
end.
is_glob_match(String, <<"!", Glob/binary>>) ->
not is_regexp_match(String, ejabberd_regexp:sh_to_awk(Glob));
is_glob_match(String, Glob) ->
is_regexp_match(String, ejabberd_regexp:sh_to_awk(Glob)).
%%%===================================================================
%%% Internal functions
%%%===================================================================
|
