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%%%-------------------------------------------------------------------
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% @copyright (C) 2016, Evgeny Khramtsov
%%% @doc
%%%
%%% @end
%%% Created : 14 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%-------------------------------------------------------------------
-module(mod_privacy_mnesia).
-behaviour(mod_privacy).
%% API
-export([init/2, process_lists_get/2, process_list_get/3,
process_default_set/3, process_active_set/3,
remove_privacy_list/3, set_privacy_list/1,
set_privacy_list/4, get_user_list/2, get_user_lists/2,
remove_user/2, import/2]).
-include("jlib.hrl").
-include("mod_privacy.hrl").
-include("logger.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init(_Host, _Opts) ->
mnesia:create_table(privacy,
[{disc_copies, [node()]},
{attributes, record_info(fields, privacy)}]),
update_table().
process_lists_get(LUser, LServer) ->
case catch mnesia:dirty_read(privacy, {LUser, LServer}) of
{'EXIT', _Reason} -> error;
[] -> {none, []};
[#privacy{default = Default, lists = Lists}] ->
LItems = lists:map(fun ({N, _}) ->
#xmlel{name = <<"list">>,
attrs = [{<<"name">>, N}],
children = []}
end, Lists),
{Default, LItems}
end.
process_list_get(LUser, LServer, Name) ->
case catch mnesia:dirty_read(privacy, {LUser, LServer}) of
{'EXIT', _Reason} -> error;
[] -> not_found;
[#privacy{lists = Lists}] ->
case lists:keysearch(Name, 1, Lists) of
{value, {_, List}} -> List;
_ -> not_found
end
end.
process_default_set(LUser, LServer, {value, Name}) ->
F = fun () ->
case mnesia:read({privacy, {LUser, LServer}}) of
[] -> not_found;
[#privacy{lists = Lists} = P] ->
case lists:keymember(Name, 1, Lists) of
true ->
mnesia:write(P#privacy{default = Name,
lists = Lists}),
ok;
false -> not_found
end
end
end,
mnesia:transaction(F);
process_default_set(LUser, LServer, false) ->
F = fun () ->
case mnesia:read({privacy, {LUser, LServer}}) of
[] -> ok;
[R] -> mnesia:write(R#privacy{default = none})
end
end,
mnesia:transaction(F).
process_active_set(LUser, LServer, Name) ->
case catch mnesia:dirty_read(privacy, {LUser, LServer}) of
[] -> error;
[#privacy{lists = Lists}] ->
case lists:keysearch(Name, 1, Lists) of
{value, {_, List}} -> List;
false -> error
end
end.
remove_privacy_list(LUser, LServer, Name) ->
F = fun () ->
case mnesia:read({privacy, {LUser, LServer}}) of
[] -> ok;
[#privacy{default = Default, lists = Lists} = P] ->
if Name == Default -> conflict;
true ->
NewLists = lists:keydelete(Name, 1, Lists),
mnesia:write(P#privacy{lists = NewLists})
end
end
end,
mnesia:transaction(F).
set_privacy_list(Privacy) ->
mnesia:dirty_write(Privacy).
set_privacy_list(LUser, LServer, Name, List) ->
F = fun () ->
case mnesia:wread({privacy, {LUser, LServer}}) of
[] ->
NewLists = [{Name, List}],
mnesia:write(#privacy{us = {LUser, LServer},
lists = NewLists});
[#privacy{lists = Lists} = P] ->
NewLists1 = lists:keydelete(Name, 1, Lists),
NewLists = [{Name, List} | NewLists1],
mnesia:write(P#privacy{lists = NewLists})
end
end,
mnesia:transaction(F).
get_user_list(LUser, LServer) ->
case catch mnesia:dirty_read(privacy, {LUser, LServer})
of
[] -> {none, []};
[#privacy{default = Default, lists = Lists}] ->
case Default of
none -> {none, []};
_ ->
case lists:keysearch(Default, 1, Lists) of
{value, {_, List}} -> {Default, List};
_ -> {none, []}
end
end;
_ -> {none, []}
end.
get_user_lists(LUser, LServer) ->
case catch mnesia:dirty_read(privacy, {LUser, LServer}) of
[#privacy{} = P] ->
{ok, P};
_ ->
error
end.
remove_user(LUser, LServer) ->
F = fun () -> mnesia:delete({privacy, {LUser, LServer}}) end,
mnesia:transaction(F).
import(_LServer, #privacy{} = P) ->
mnesia:dirty_write(P).
%%%===================================================================
%%% Internal functions
%%%===================================================================
update_table() ->
Fields = record_info(fields, privacy),
case mnesia:table_info(privacy, attributes) of
Fields ->
ejabberd_config:convert_table_to_binary(
privacy, Fields, set,
fun(#privacy{us = {U, _}}) -> U end,
fun(#privacy{us = {U, S}, default = Def, lists = Lists} = R) ->
NewLists =
lists:map(
fun({Name, Ls}) ->
NewLs =
lists:map(
fun(#listitem{value = Val} = L) ->
NewVal =
case Val of
{LU, LS, LR} ->
{iolist_to_binary(LU),
iolist_to_binary(LS),
iolist_to_binary(LR)};
none -> none;
both -> both;
from -> from;
to -> to;
_ -> iolist_to_binary(Val)
end,
L#listitem{value = NewVal}
end, Ls),
{iolist_to_binary(Name), NewLs}
end, Lists),
NewDef = case Def of
none -> none;
_ -> iolist_to_binary(Def)
end,
NewUS = {iolist_to_binary(U), iolist_to_binary(S)},
R#privacy{us = NewUS, default = NewDef,
lists = NewLists}
end);
_ ->
?INFO_MSG("Recreating privacy table", []),
mnesia:transform_table(privacy, ignore, Fields)
end.
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