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xmpp.chapril.org-ejabberd/src/mod_shared_roster.erl
Paweł Chmielowski d8899ca9ac Add cache to mod_shared_roster 
This should help with excessive queries that sql backend generates
Should fix issue #3158.
2020-03-17 14:35:43 +01:00

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%%%----------------------------------------------------------------------
%%% File : mod_shared_roster.erl
%%% Author : Alexey Shchepin <alexey@process-one.net>
%%% Purpose : Shared roster management
%%% Created : 5 Mar 2005 by Alexey Shchepin <alexey@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2020 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_shared_roster).
-author('alexey@process-one.net').
-behaviour(gen_mod).
-export([start/2, stop/1, reload/3, export/1,
import_info/0, webadmin_menu/3, webadmin_page/3,
get_user_roster/2,
get_jid_info/4, import/5, process_item/2, import_start/2,
in_subscription/2, out_subscription/1, c2s_self_presence/1,
unset_presence/4, register_user/2, remove_user/2,
list_groups/1, create_group/2, create_group/3,
delete_group/2, get_group_opts/2, set_group_opts/3,
get_group_users/2, get_group_explicit_users/2,
is_user_in_group/3, add_user_to_group/3, opts_to_binary/1,
remove_user_from_group/3, mod_opt_type/1, mod_options/1, mod_doc/0, depends/2]).
-include("logger.hrl").
-include("xmpp.hrl").
-include("mod_roster.hrl").
-include("ejabberd_http.hrl").
-include("ejabberd_web_admin.hrl").
-include("mod_shared_roster.hrl").
-include("translate.hrl").
-type group_options() :: [{atom(), any()}].
-callback init(binary(), gen_mod:opts()) -> any().
-callback import(binary(), binary(), [binary()]) -> ok.
-callback list_groups(binary()) -> [binary()].
-callback groups_with_opts(binary()) -> [{binary(), group_options()}].
-callback create_group(binary(), binary(), group_options()) -> {atomic, any()}.
-callback delete_group(binary(), binary()) -> {atomic, any()}.
-callback get_group_opts(binary(), binary()) -> group_options() | error.
-callback set_group_opts(binary(), binary(), group_options()) -> {atomic, any()}.
-callback get_user_groups({binary(), binary()}, binary()) -> [binary()].
-callback get_group_explicit_users(binary(), binary()) -> [{binary(), binary()}].
-callback get_user_displayed_groups(binary(), binary(), group_options()) ->
[{binary(), group_options()}].
-callback is_user_in_group({binary(), binary()}, binary(), binary()) -> boolean().
-callback add_user_to_group(binary(), {binary(), binary()}, binary()) -> any().
-callback remove_user_from_group(binary(), {binary(), binary()}, binary()) -> {atomic, any()}.
-callback use_cache(binary()) -> boolean().
-callback cache_nodes(binary()) -> [node()].
-optional_callbacks([use_cache/1, cache_nodes/1]).
-define(GROUP_OPTS_CACHE, shared_roster_group_opts_cache).
-define(USER_GROUPS_CACHE, shared_roster_user_groups_cache).
-define(GROUP_EXPLICIT_USERS_CACHE, shared_roster_group_explicit_cache).
-define(SPECIAL_GROUPS_CACHE, shared_roster_special_groups_cache).
start(Host, Opts) ->
Mod = gen_mod:db_mod(Opts, ?MODULE),
Mod:init(Host, Opts),
init_cache(Mod, Host, Opts),
ejabberd_hooks:add(webadmin_menu_host, Host, ?MODULE,
webadmin_menu, 70),
ejabberd_hooks:add(webadmin_page_host, Host, ?MODULE,
webadmin_page, 50),
ejabberd_hooks:add(roster_get, Host, ?MODULE,
get_user_roster, 70),
ejabberd_hooks:add(roster_in_subscription, Host,
?MODULE, in_subscription, 30),
ejabberd_hooks:add(roster_out_subscription, Host,
?MODULE, out_subscription, 30),
ejabberd_hooks:add(roster_get_jid_info, Host, ?MODULE,
get_jid_info, 70),
ejabberd_hooks:add(roster_process_item, Host, ?MODULE,
process_item, 50),
ejabberd_hooks:add(c2s_self_presence, Host, ?MODULE,
c2s_self_presence, 50),
ejabberd_hooks:add(unset_presence_hook, Host, ?MODULE,
unset_presence, 50),
ejabberd_hooks:add(register_user, Host, ?MODULE,
register_user, 50),
ejabberd_hooks:add(remove_user, Host, ?MODULE,
remove_user, 50).
stop(Host) ->
ejabberd_hooks:delete(webadmin_menu_host, Host, ?MODULE,
webadmin_menu, 70),
ejabberd_hooks:delete(webadmin_page_host, Host, ?MODULE,
webadmin_page, 50),
ejabberd_hooks:delete(roster_get, Host, ?MODULE,
get_user_roster, 70),
ejabberd_hooks:delete(roster_in_subscription, Host,
?MODULE, in_subscription, 30),
ejabberd_hooks:delete(roster_out_subscription, Host,
?MODULE, out_subscription, 30),
ejabberd_hooks:delete(roster_get_jid_info, Host,
?MODULE, get_jid_info, 70),
ejabberd_hooks:delete(roster_process_item, Host,
?MODULE, process_item, 50),
ejabberd_hooks:delete(c2s_self_presence, Host,
?MODULE, c2s_self_presence, 50),
ejabberd_hooks:delete(unset_presence_hook, Host,
?MODULE, unset_presence, 50),
ejabberd_hooks:delete(register_user, Host, ?MODULE,
register_user, 50),
ejabberd_hooks:delete(remove_user, Host, ?MODULE,
remove_user,
50).
reload(Host, NewOpts, OldOpts) ->
NewMod = gen_mod:db_mod(NewOpts, ?MODULE),
OldMod = gen_mod:db_mod(OldOpts, ?MODULE),
if NewMod /= OldMod ->
NewMod:init(Host, NewOpts);
true ->
ok
end,
ok.
depends(_Host, _Opts) ->
[].
-spec init_cache(module(), binary(), gen_mod:opts()) -> ok.
init_cache(Mod, Host, Opts) ->
case use_cache(Mod, Host) of
true ->
CacheOpts = cache_opts(Opts),
ets_cache:new(?GROUP_OPTS_CACHE, CacheOpts),
ets_cache:new(?USER_GROUPS_CACHE, CacheOpts),
ets_cache:new(?GROUP_EXPLICIT_USERS_CACHE, CacheOpts),
ets_cache:new(?SPECIAL_GROUPS_CACHE, CacheOpts);
false ->
ets_cache:delete(?GROUP_OPTS_CACHE),
ets_cache:delete(?USER_GROUPS_CACHE),
ets_cache:delete(?GROUP_EXPLICIT_USERS_CACHE),
ets_cache:delete(?SPECIAL_GROUPS_CACHE)
end.
-spec cache_opts(gen_mod:opts()) -> [proplists:property()].
cache_opts(Opts) ->
MaxSize = mod_private_opt:cache_size(Opts),
CacheMissed = mod_private_opt:cache_missed(Opts),
LifeTime = mod_private_opt:cache_life_time(Opts),
[{max_size, MaxSize}, {cache_missed, CacheMissed}, {life_time, LifeTime}].
-spec use_cache(module(), binary()) -> boolean().
use_cache(Mod, Host) ->
case erlang:function_exported(Mod, use_cache, 1) of
true -> Mod:use_cache(Host);
false -> mod_shared_roster_opt:use_cache(Host)
end.
-spec cache_nodes(module(), binary()) -> [node()].
cache_nodes(Mod, Host) ->
case erlang:function_exported(Mod, cache_nodes, 1) of
true -> Mod:cache_nodes(Host);
false -> ejabberd_cluster:get_nodes()
end.
-spec get_user_roster([#roster{}], {binary(), binary()}) -> [#roster{}].
get_user_roster(Items, US) ->
{U, S} = US,
DisplayedGroups = get_user_displayed_groups(US),
SRUsers = lists:foldl(fun (Group, Acc1) ->
GroupName = get_group_name(S, Group),
lists:foldl(fun (User, Acc2) ->
if User == US -> Acc2;
true ->
dict:append(User,
GroupName,
Acc2)
end
end,
Acc1, get_group_users(S, Group))
end,
dict:new(), DisplayedGroups),
{NewItems1, SRUsersRest} = lists:mapfoldl(fun (Item,
SRUsers1) ->
{_, _, {U1, S1, _}} =
Item#roster.usj,
US1 = {U1, S1},
case dict:find(US1,
SRUsers1)
of
{ok, GroupNames} ->
{Item#roster{subscription
=
both,
groups =
Item#roster.groups ++ GroupNames,
ask =
none},
dict:erase(US1,
SRUsers1)};
error ->
{Item, SRUsers1}
end
end,
SRUsers, Items),
SRItems = [#roster{usj = {U, S, {U1, S1, <<"">>}},
us = US, jid = {U1, S1, <<"">>},
name = get_rosteritem_name(U1, S1),
subscription = both, ask = none, groups = GroupNames}
|| {{U1, S1}, GroupNames} <- dict:to_list(SRUsersRest)],
SRItems ++ NewItems1.
get_rosteritem_name(U, S) ->
case gen_mod:is_loaded(S, mod_vcard) of
true ->
SubEls = mod_vcard:get_vcard(U, S),
get_rosteritem_name_vcard(SubEls);
false ->
<<"">>
end.
-spec get_rosteritem_name_vcard([xmlel()]) -> binary().
get_rosteritem_name_vcard([Vcard|_]) ->
case fxml:get_path_s(Vcard,
[{elem, <<"NICKNAME">>}, cdata])
of
<<"">> ->
fxml:get_path_s(Vcard, [{elem, <<"FN">>}, cdata]);
Nickname -> Nickname
end;
get_rosteritem_name_vcard(_) ->
<<"">>.
%% This function rewrites the roster entries when moving or renaming
%% them in the user contact list.
-spec process_item(#roster{}, binary()) -> #roster{}.
process_item(RosterItem, Host) ->
USFrom = {UserFrom, ServerFrom} = RosterItem#roster.us,
{UserTo, ServerTo, ResourceTo} = RosterItem#roster.jid,
NameTo = RosterItem#roster.name,
USTo = {UserTo, ServerTo},
DisplayedGroups = get_user_displayed_groups(USFrom),
CommonGroups = lists:filter(fun (Group) ->
is_user_in_group(USTo, Group, Host)
end,
DisplayedGroups),
case CommonGroups of
[] -> RosterItem;
%% Roster item cannot be removed: We simply reset the original groups:
_ when RosterItem#roster.subscription == remove ->
GroupNames = lists:map(fun (Group) ->
get_group_name(Host, Group)
end,
CommonGroups),
RosterItem#roster{subscription = both, ask = none,
groups = GroupNames};
%% Both users have at least a common shared group,
%% So each user can see the other
_ ->
case lists:subtract(RosterItem#roster.groups,
CommonGroups)
of
%% If it doesn't, then remove this user from any
%% existing roster groups.
[] ->
Pres = #presence{from = jid:make(UserTo, ServerTo),
to = jid:make(UserFrom, ServerFrom),
type = unsubscribe},
mod_roster:out_subscription(Pres),
mod_roster:in_subscription(false, Pres),
RosterItem#roster{subscription = both, ask = none};
%% If so, it means the user wants to add that contact
%% to his personal roster
PersonalGroups ->
set_new_rosteritems(UserFrom, ServerFrom, UserTo,
ServerTo, ResourceTo, NameTo,
PersonalGroups)
end
end.
build_roster_record(User1, Server1, User2, Server2,
Name2, Groups) ->
USR2 = {User2, Server2, <<"">>},
#roster{usj = {User1, Server1, USR2},
us = {User1, Server1}, jid = USR2, name = Name2,
subscription = both, ask = none, groups = Groups}.
set_new_rosteritems(UserFrom, ServerFrom, UserTo,
ServerTo, ResourceTo, NameTo, GroupsFrom) ->
RIFrom = build_roster_record(UserFrom, ServerFrom,
UserTo, ServerTo, NameTo, GroupsFrom),
set_item(UserFrom, ServerFrom, ResourceTo, RIFrom),
JIDTo = jid:make(UserTo, ServerTo),
JIDFrom = jid:make(UserFrom, ServerFrom),
RITo = build_roster_record(UserTo, ServerTo, UserFrom,
ServerFrom, UserFrom, []),
set_item(UserTo, ServerTo, <<"">>, RITo),
mod_roster:out_subscription(
#presence{from = JIDFrom, to = JIDTo, type = subscribe}),
mod_roster:in_subscription(
false, #presence{to = JIDTo, from = JIDFrom, type = subscribe}),
mod_roster:out_subscription(
#presence{from = JIDTo, to = JIDFrom, type = subscribed}),
mod_roster:in_subscription(
false, #presence{to = JIDFrom, from = JIDTo, type = subscribed}),
mod_roster:out_subscription(
#presence{from = JIDTo, to = JIDFrom, type = subscribe}),
mod_roster:in_subscription(
false, #presence{to = JIDFrom, from = JIDTo, type = subscribe}),
mod_roster:out_subscription(
#presence{from = JIDFrom, to = JIDTo, type = subscribed}),
mod_roster:in_subscription(
false, #presence{to = JIDTo, from = JIDFrom, type = subscribed}),
RIFrom.
set_item(User, Server, Resource, Item) ->
ResIQ = #iq{from = jid:make(User, Server, Resource),
to = jid:make(Server),
type = set, id = <<"push", (p1_rand:get_string())/binary>>,
sub_els = [#roster_query{
items = [mod_roster:encode_item(Item)]}]},
ejabberd_router:route(ResIQ).
-spec get_jid_info({subscription(), ask(), [binary()]}, binary(), binary(), jid())
-> {subscription(), ask(), [binary()]}.
get_jid_info({Subscription, Ask, Groups}, User, Server,
JID) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
US = {LUser, LServer},
{U1, S1, _} = jid:tolower(JID),
US1 = {U1, S1},
DisplayedGroups = get_user_displayed_groups(US),
SRUsers = lists:foldl(fun (Group, Acc1) ->
GroupName = get_group_name(LServer, Group),
lists:foldl(fun (User1, Acc2) ->
dict:append(User1,
GroupName,
Acc2)
end,
Acc1,
get_group_users(LServer, Group))
end,
dict:new(), DisplayedGroups),
case dict:find(US1, SRUsers) of
{ok, GroupNames} ->
NewGroups = if Groups == [] -> GroupNames;
true -> Groups
end,
{both, none, NewGroups};
error -> {Subscription, Ask, Groups}
end.
-spec in_subscription(boolean(), presence()) -> boolean().
in_subscription(Acc, #presence{to = To, from = JID, type = Type}) ->
#jid{user = User, server = Server} = To,
process_subscription(in, User, Server, JID, Type, Acc).
-spec out_subscription(presence()) -> boolean().
out_subscription(#presence{from = From, to = To, type = unsubscribed} = Pres) ->
#jid{user = User, server = Server} = From,
mod_roster:out_subscription(Pres#presence{type = unsubscribe}),
mod_roster:in_subscription(false, xmpp:set_from_to(
Pres#presence{type = unsubscribe},
To, From)),
process_subscription(out, User, Server, To, unsubscribed, false);
out_subscription(#presence{from = From, to = To, type = Type}) ->
#jid{user = User, server = Server} = From,
process_subscription(out, User, Server, To, Type, false).
process_subscription(Direction, User, Server, JID,
_Type, Acc) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
US = {LUser, LServer},
{U1, S1, _} =
jid:tolower(jid:remove_resource(JID)),
US1 = {U1, S1},
DisplayedGroups = get_user_displayed_groups(US),
SRUsers = lists:usort(lists:flatmap(fun (Group) ->
get_group_users(LServer, Group)
end,
DisplayedGroups)),
case lists:member(US1, SRUsers) of
true ->
case Direction of
in -> {stop, false};
out -> stop
end;
false -> Acc
end.
list_groups(Host) ->
Mod = gen_mod:db_mod(Host, ?MODULE),
Mod:list_groups(Host).
groups_with_opts(Host) ->
Mod = gen_mod:db_mod(Host, ?MODULE),
Mod:groups_with_opts(Host).
create_group(Host, Group) ->
create_group(Host, Group, []).
create_group(Host, Group, Opts) ->
Mod = gen_mod:db_mod(Host, ?MODULE),
case use_cache(Mod, Host) of
true ->
ets_cache:insert(?GROUP_OPTS_CACHE, {Host, Group}, Opts, cache_nodes(Mod, Host)),
ets_cache:clear(?SPECIAL_GROUPS_CACHE, cache_nodes(Mod, Host));
_ ->
ok
end,
Mod:create_group(Host, Group, Opts).
delete_group(Host, Group) ->
Mod = gen_mod:db_mod(Host, ?MODULE),
case use_cache(Mod, Host) of
true ->
ets_cache:delete(?GROUP_OPTS_CACHE, {Host, Group}, cache_nodes(Mod, Host)),
ets_cache:clear(?USER_GROUPS_CACHE, cache_nodes(Mod, Host)),
ets_cache:clear(?GROUP_EXPLICIT_USERS_CACHE, cache_nodes(Mod, Host)),
ets_cache:clear(?SPECIAL_GROUPS_CACHE, cache_nodes(Mod, Host));
_ ->
ok
end,
Mod:delete_group(Host, Group).
get_group_opts(Host, Group) ->
Mod = gen_mod:db_mod(Host, ?MODULE),
case use_cache(Mod, Host) of
true ->
ets_cache:lookup(
?GROUP_OPTS_CACHE, {Host, Group},
fun() ->
case Mod:get_group_opts(Host, Group) of
error -> error;
V -> {cache, V}
end
end);
false ->
Mod:get_group_opts(Host, Group)
end.
set_group_opts(Host, Group, Opts) ->
Mod = gen_mod:db_mod(Host, ?MODULE),
case use_cache(Mod, Host) of
true ->
ets_cache:insert(?GROUP_OPTS_CACHE, {Host, Group}, Opts, cache_nodes(Mod, Host)),
ets_cache:clear(?SPECIAL_GROUPS_CACHE, cache_nodes(Mod, Host));
_ ->
ok
end,
Mod:set_group_opts(Host, Group, Opts).
get_user_groups(US) ->
Host = element(2, US),
Mod = gen_mod:db_mod(Host, ?MODULE),
UG = case use_cache(Mod, Host) of
true ->
ets_cache:lookup(
?USER_GROUPS_CACHE, {Host, US},
fun() ->
{cache, Mod:get_user_groups(US, Host)}
end);
false ->
Mod:get_user_groups(US, Host)
end,
UG ++ get_special_users_groups(Host).
is_group_enabled(Host1, Group1) ->
{Host, Group} = split_grouphost(Host1, Group1),
case get_group_opts(Host, Group) of
error -> false;
Opts -> not lists:member(disabled, Opts)
end.
%% @spec (Host::string(), Group::string(), Opt::atom(), Default) -> OptValue | Default
get_group_opt(Host, Group, Opt, Default) ->
case get_group_opts(Host, Group) of
error -> Default;
Opts ->
case lists:keysearch(Opt, 1, Opts) of
{value, {_, Val}} -> Val;
false -> Default
end
end.
get_online_users(Host) ->
lists:usort([{U, S}
|| {U, S, _} <- ejabberd_sm:get_vh_session_list(Host)]).
get_group_users(Host1, Group1) ->
{Host, Group} = split_grouphost(Host1, Group1),
get_group_users(Host, Group, get_group_opts(Host, Group)).
get_group_users(Host, Group, GroupOpts) ->
case proplists:get_value(all_users, GroupOpts, false) of
true -> ejabberd_auth:get_users(Host);
false -> []
end
++
case proplists:get_value(online_users, GroupOpts, false)
of
true -> get_online_users(Host);
false -> []
end
++ get_group_explicit_users(Host, Group).
get_group_explicit_users(Host, Group) ->
Mod = gen_mod:db_mod(Host, ?MODULE),
case use_cache(Mod, Host) of
true ->
ets_cache:lookup(
?GROUP_EXPLICIT_USERS_CACHE, {Host, Group},
fun() ->
{cache, Mod:get_group_explicit_users(Host, Group)}
end);
false ->
Mod:get_group_explicit_users(Host, Group)
end.
get_group_name(Host1, Group1) ->
{Host, Group} = split_grouphost(Host1, Group1),
get_group_opt(Host, Group, name, Group).
%% Get list of names of groups that have @all@/@online@/etc in the memberlist
get_special_users_groups(Host) ->
Extract =
fun() ->
lists:filtermap(
fun({Group, Opts}) ->
case proplists:get_value(all_users, Opts, false) orelse
proplists:get_value(online_users, Opts, false) of
true -> {true, Group};
false -> false
end
end,
groups_with_opts(Host))
end,
Mod = gen_mod:db_mod(Host, ?MODULE),
case use_cache(Mod, Host) of
true ->
ets_cache:lookup(
?SPECIAL_GROUPS_CACHE, {Host, false},
fun() ->
{cache, Extract()}
end);
false ->
Extract()
end.
%% Get list of names of groups that have @online@ in the memberlist
get_special_users_groups_online(Host) ->
Extract =
fun() ->
lists:filtermap(
fun({Group, Opts}) ->
case proplists:get_value(online_users, Opts, false) of
true -> {true, Group};
false -> false
end
end,
groups_with_opts(Host))
end,
Mod = gen_mod:db_mod(Host, ?MODULE),
case use_cache(Mod, Host) of
true ->
ets_cache:lookup(
?SPECIAL_GROUPS_CACHE, {Host, true},
fun() ->
{cache, Extract()}
end);
false ->
Extract()
end.
%% Given two lists of groupnames and their options,
%% return the list of displayed groups to the second list
displayed_groups(GroupsOpts, SelectedGroupsOpts) ->
DisplayedGroups = lists:usort(lists:flatmap(fun
({_Group, Opts}) ->
[G
|| G
<- proplists:get_value(displayed_groups,
Opts,
[]),
not
lists:member(disabled,
Opts)]
end,
SelectedGroupsOpts)),
[G
|| G <- DisplayedGroups,
not
lists:member(disabled,
proplists:get_value(G, GroupsOpts, []))].
%% Given a list of group names with options,
%% for those that have @all@ in memberlist,
%% get the list of groups displayed
get_special_displayed_groups(GroupsOpts) ->
Groups = lists:filter(fun ({_Group, Opts}) ->
proplists:get_value(all_users, Opts, false)
end,
GroupsOpts),
displayed_groups(GroupsOpts, Groups).
%% Given a username and server, and a list of group names with options,
%% for the list of groups of that server that user is member
%% get the list of groups displayed
get_user_displayed_groups(LUser, LServer, GroupsOpts) ->
Mod = gen_mod:db_mod(LServer, ?MODULE),
Groups = Mod:get_user_displayed_groups(LUser, LServer, GroupsOpts),
displayed_groups(GroupsOpts, Groups).
%% @doc Get the list of groups that are displayed to this user
get_user_displayed_groups(US) ->
Host = element(2, US),
DisplayedGroups1 = lists:usort(lists:flatmap(fun
(Group) ->
case
is_group_enabled(Host,
Group)
of
true ->
get_group_opt(Host,
Group,
displayed_groups,
[]);
false -> []
end
end,
get_user_groups(US))),
[Group
|| Group <- DisplayedGroups1,
is_group_enabled(Host, Group)].
is_user_in_group(US, Group, Host) ->
Mod = gen_mod:db_mod(Host, ?MODULE),
case Mod:is_user_in_group(US, Group, Host) of
false ->
lists:member(US, get_group_users(Host, Group));
true ->
true
end.
%% @spec (Host::string(), {User::string(), Server::string()}, Group::string()) -> {atomic, ok} | error
add_user_to_group(Host, US, Group) ->
{_LUser, LServer} = US,
case lists:member(LServer, ejabberd_config:get_option(hosts)) of
true -> add_user_to_group2(Host, US, Group);
false ->
?INFO_MSG("Attempted adding to shared roster user of inexistent vhost ~ts", [LServer]),
error
end.
add_user_to_group2(Host, US, Group) ->
{LUser, LServer} = US,
case ejabberd_regexp:run(LUser, <<"^@.+@\$">>) of
match ->
GroupOpts = get_group_opts(Host, Group),
MoreGroupOpts = case LUser of
<<"@all@">> -> [{all_users, true}];
<<"@online@">> -> [{online_users, true}];
_ -> []
end,
set_group_opts(Host, Group,
GroupOpts ++ MoreGroupOpts);
nomatch ->
DisplayedToGroups = displayed_to_groups(Group, Host),
DisplayedGroups = get_displayed_groups(Group, LServer),
push_user_to_displayed(LUser, LServer, Group, Host, both, DisplayedToGroups),
push_displayed_to_user(LUser, LServer, Host, both, DisplayedGroups),
Mod = gen_mod:db_mod(Host, ?MODULE),
case use_cache(Mod, Host) of
true ->
ets_cache:delete(?USER_GROUPS_CACHE, {Host, US}, cache_nodes(Mod, Host)),
ets_cache:delete(?GROUP_EXPLICIT_USERS_CACHE, {Host, Group}, cache_nodes(Mod, Host));
false ->
ok
end,
Mod:add_user_to_group(Host, US, Group)
end.
get_displayed_groups(Group, LServer) ->
get_group_opt(LServer, Group, displayed_groups, []).
push_displayed_to_user(LUser, LServer, Host, Subscription, DisplayedGroups) ->
[push_members_to_user(LUser, LServer, DGroup, Host,
Subscription)
|| DGroup <- DisplayedGroups].
remove_user_from_group(Host, US, Group) ->
{LUser, LServer} = US,
case ejabberd_regexp:run(LUser, <<"^@.+@\$">>) of
match ->
GroupOpts = get_group_opts(Host, Group),
NewGroupOpts = case LUser of
<<"@all@">> ->
lists:filter(fun (X) -> X /= {all_users, true}
end,
GroupOpts);
<<"@online@">> ->
lists:filter(fun (X) -> X /= {online_users, true}
end,
GroupOpts)
end,
set_group_opts(Host, Group, NewGroupOpts);
nomatch ->
Mod = gen_mod:db_mod(Host, ?MODULE),
case use_cache(Mod, Host) of
true ->
ets_cache:delete(?USER_GROUPS_CACHE, {Host, US}, cache_nodes(Mod, Host)),
ets_cache:delete(?GROUP_EXPLICIT_USERS_CACHE, {Host, Group}, cache_nodes(Mod, Host));
false ->
ok
end,
Result = Mod:remove_user_from_group(Host, US, Group),
DisplayedToGroups = displayed_to_groups(Group, Host),
DisplayedGroups = get_displayed_groups(Group, LServer),
push_user_to_displayed(LUser, LServer, Group, Host, remove, DisplayedToGroups),
push_displayed_to_user(LUser, LServer, Host, remove, DisplayedGroups),
Result
end.
push_members_to_user(LUser, LServer, Group, Host,
Subscription) ->
GroupOpts = get_group_opts(LServer, Group),
GroupName = proplists:get_value(name, GroupOpts, Group),
Members = get_group_users(Host, Group),
lists:foreach(fun ({U, S}) ->
push_roster_item(LUser, LServer, U, S, GroupName,
Subscription)
end,
Members).
-spec register_user(binary(), binary()) -> ok.
register_user(User, Server) ->
Groups = get_user_groups({User, Server}),
[push_user_to_displayed(User, Server, Group, Server,
both, displayed_to_groups(Group, Server))
|| Group <- Groups],
ok.
-spec remove_user(binary(), binary()) -> ok.
remove_user(User, Server) ->
push_user_to_members(User, Server, remove).
push_user_to_members(User, Server, Subscription) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
GroupsOpts = groups_with_opts(LServer),
SpecialGroups =
get_special_displayed_groups(GroupsOpts),
UserGroups = get_user_displayed_groups(LUser, LServer,
GroupsOpts),
lists:foreach(fun (Group) ->
remove_user_from_group(LServer, {LUser, LServer},
Group),
GroupOpts = proplists:get_value(Group, GroupsOpts,
[]),
GroupName = proplists:get_value(name, GroupOpts,
Group),
lists:foreach(fun ({U, S}) ->
push_roster_item(U, S, LUser,
LServer,
GroupName,
Subscription)
end,
get_group_users(LServer, Group,
GroupOpts))
end,
lists:usort(SpecialGroups ++ UserGroups)).
push_user_to_displayed(LUser, LServer, Group, Host, Subscription, DisplayedToGroupsOpts) ->
GroupName = get_group_opt(Host, Group, name, Group),
[push_user_to_group(LUser, LServer, GroupD, Host,
GroupName, Subscription)
|| GroupD <- DisplayedToGroupsOpts].
push_user_to_group(LUser, LServer, Group, Host,
GroupName, Subscription) ->
lists:foreach(fun ({U, S})
when (U == LUser) and (S == LServer) ->
ok;
({U, S}) ->
case lists:member(S, ejabberd_option:hosts()) of
true ->
push_roster_item(U, S, LUser, LServer, GroupName,
Subscription);
_ ->
ok
end
end,
get_group_users(Host, Group)).
%% Get list of groups to which this group is displayed
displayed_to_groups(GroupName, LServer) ->
GroupsOpts = groups_with_opts(LServer),
Gs = lists:filter(fun ({_Group, Opts}) ->
lists:member(GroupName,
proplists:get_value(displayed_groups,
Opts, []))
end,
GroupsOpts),
[Name || {Name, _} <- Gs].
push_item(User, Server, Item) ->
mod_roster:push_item(jid:make(User, Server),
Item#roster{subscription = none},
Item).
push_roster_item(User, Server, ContactU, ContactS,
GroupName, Subscription) ->
Item = #roster{usj =
{User, Server, {ContactU, ContactS, <<"">>}},
us = {User, Server}, jid = {ContactU, ContactS, <<"">>},
name = <<"">>, subscription = Subscription, ask = none,
groups = [GroupName]},
push_item(User, Server, Item).
-spec c2s_self_presence({presence(), ejabberd_c2s:state()})
-> {presence(), ejabberd_c2s:state()}.
c2s_self_presence(Acc) ->
Acc.
-spec unset_presence(binary(), binary(), binary(), binary()) -> ok.
unset_presence(LUser, LServer, Resource, Status) ->
Resources = ejabberd_sm:get_user_resources(LUser,
LServer),
?DEBUG("Unset_presence for ~p @ ~p / ~p -> ~p "
"(~p resources)",
[LUser, LServer, Resource, Status, length(Resources)]),
case length(Resources) of
0 ->
OnlineGroups = get_special_users_groups_online(LServer),
lists:foreach(
fun(OG) ->
DisplayedToGroups = displayed_to_groups(OG, LServer),
push_user_to_displayed(LUser, LServer, OG,
LServer, remove, DisplayedToGroups),
push_displayed_to_user(LUser, LServer,
LServer, remove, DisplayedToGroups)
end,
OnlineGroups);
_ -> ok
end.
%%---------------------
%% Web Admin
%%---------------------
webadmin_menu(Acc, _Host, Lang) ->
[{<<"shared-roster">>, translate:translate(Lang, ?T("Shared Roster Groups"))}
| Acc].
webadmin_page(_, Host,
#request{us = _US, path = [<<"shared-roster">>],
q = Query, lang = Lang} =
_Request) ->
Res = list_shared_roster_groups(Host, Query, Lang),
{stop, Res};
webadmin_page(_, Host,
#request{us = _US, path = [<<"shared-roster">>, Group],
q = Query, lang = Lang} =
_Request) ->
Res = shared_roster_group(Host, Group, Query, Lang),
{stop, Res};
webadmin_page(Acc, _, _) -> Acc.
list_shared_roster_groups(Host, Query, Lang) ->
Res = list_sr_groups_parse_query(Host, Query),
SRGroups = list_groups(Host),
FGroups = (?XAE(<<"table">>, [],
[?XE(<<"tbody">>,
(lists:map(fun (Group) ->
?XE(<<"tr">>,
[?XE(<<"td">>,
[?INPUT(<<"checkbox">>,
<<"selected">>,
Group)]),
?XE(<<"td">>,
[?AC(<<Group/binary, "/">>,
Group)])])
end,
lists:sort(SRGroups))
++
[?XE(<<"tr">>,
[?X(<<"td">>),
?XE(<<"td">>,
[?INPUT(<<"text">>, <<"namenew">>,
<<"">>)]),
?XE(<<"td">>,
[?INPUTT(<<"submit">>, <<"addnew">>,
?T("Add New"))])])]))])),
(?H1GL((translate:translate(Lang, ?T("Shared Roster Groups"))),
<<"mod-shared-roster">>, <<"mod_shared_roster">>))
++
case Res of
ok -> [?XREST(?T("Submitted"))];
error -> [?XREST(?T("Bad format"))];
nothing -> []
end
++
[?XAE(<<"form">>,
[{<<"action">>, <<"">>}, {<<"method">>, <<"post">>}],
[FGroups, ?BR,
?INPUTT(<<"submit">>, <<"delete">>,
?T("Delete Selected"))])].
list_sr_groups_parse_query(Host, Query) ->
case lists:keysearch(<<"addnew">>, 1, Query) of
{value, _} -> list_sr_groups_parse_addnew(Host, Query);
_ ->
case lists:keysearch(<<"delete">>, 1, Query) of
{value, _} -> list_sr_groups_parse_delete(Host, Query);
_ -> nothing
end
end.
list_sr_groups_parse_addnew(Host, Query) ->
case lists:keysearch(<<"namenew">>, 1, Query) of
{value, {_, Group}} when Group /= <<"">> ->
create_group(Host, Group),
ok;
_ ->
error
end.
list_sr_groups_parse_delete(Host, Query) ->
SRGroups = list_groups(Host),
lists:foreach(fun (Group) ->
case lists:member({<<"selected">>, Group}, Query) of
true -> delete_group(Host, Group);
_ -> ok
end
end,
SRGroups),
ok.
shared_roster_group(Host, Group, Query, Lang) ->
Res = shared_roster_group_parse_query(Host, Group,
Query),
GroupOpts = get_group_opts(Host, Group),
Name = get_opt(GroupOpts, name, <<"">>),
Description = get_opt(GroupOpts, description, <<"">>),
AllUsers = get_opt(GroupOpts, all_users, false),
OnlineUsers = get_opt(GroupOpts, online_users, false),
DisplayedGroups = get_opt(GroupOpts, displayed_groups,
[]),
Members = get_group_explicit_users(Host,
Group),
FMembers = iolist_to_binary(
[if AllUsers -> <<"@all@\n">>;
true -> <<"">>
end,
if OnlineUsers -> <<"@online@\n">>;
true -> <<"">>
end,
[[us_to_list(Member), $\n] || Member <- Members]]),
FDisplayedGroups = [<<DG/binary, $\n>> || DG <- DisplayedGroups],
DescNL = length(ejabberd_regexp:split(Description,
<<"\n">>)),
FGroup = (?XAE(<<"table">>,
[{<<"class">>, <<"withtextareas">>}],
[?XE(<<"tbody">>,
[?XE(<<"tr">>,
[?XCT(<<"td">>, ?T("Name:")),
?XE(<<"td">>,
[?INPUT(<<"text">>, <<"name">>, Name)])]),
?XE(<<"tr">>,
[?XCT(<<"td">>, ?T("Description:")),
?XE(<<"td">>,
[?TEXTAREA(<<"description">>,
integer_to_binary(lists:max([3,
DescNL])),
<<"20">>, Description)])]),
?XE(<<"tr">>,
[?XCT(<<"td">>, ?T("Members:")),
?XE(<<"td">>,
[?TEXTAREA(<<"members">>,
integer_to_binary(lists:max([3,
length(Members)+3])),
<<"20">>, FMembers)])]),
?XE(<<"tr">>,
[?XCT(<<"td">>, ?T("Displayed Groups:")),
?XE(<<"td">>,
[?TEXTAREA(<<"dispgroups">>,
integer_to_binary(lists:max([3, length(FDisplayedGroups)])),
<<"20">>,
list_to_binary(FDisplayedGroups))])])])])),
(?H1GL((translate:translate(Lang, ?T("Shared Roster Groups"))),
<<"mod-shared-roster">>, <<"mod_shared_roster">>))
++
[?XC(<<"h2">>, <<(translate:translate(Lang, ?T("Group ")))/binary, Group/binary>>)] ++
case Res of
ok -> [?XREST(?T("Submitted"))];
{error_jids, NonAddedList1} ->
NonAddedList2 = [jid:encode({U,S,<<>>}) || {U,S} <- NonAddedList1],
NonAddedList3 = str:join(NonAddedList2, <<", ">>),
NonAddedText1 = translate:translate(Lang, ?T("Members not added (inexistent vhost): ")),
NonAddedText2 = str:concat(NonAddedText1, NonAddedList3),
[?XRES(NonAddedText2)];
error -> [?XREST(?T("Bad format"))];
nothing -> []
end
++
[?XAE(<<"form">>,
[{<<"action">>, <<"">>}, {<<"method">>, <<"post">>}],
[FGroup, ?BR,
?INPUTT(<<"submit">>, <<"submit">>, ?T("Submit"))])].
shared_roster_group_parse_query(Host, Group, Query) ->
case lists:keysearch(<<"submit">>, 1, Query) of
{value, _} ->
{value, {_, Name}} = lists:keysearch(<<"name">>, 1,
Query),
{value, {_, Description}} =
lists:keysearch(<<"description">>, 1, Query),
{value, {_, SMembers}} = lists:keysearch(<<"members">>,
1, Query),
{value, {_, SDispGroups}} =
lists:keysearch(<<"dispgroups">>, 1, Query),
NameOpt = if Name == <<"">> -> [];
true -> [{name, Name}]
end,
DescriptionOpt = if Description == <<"">> -> [];
true -> [{description, Description}]
end,
DispGroups = str:tokens(SDispGroups, <<"\r\n">>),
DispGroupsOpt = if DispGroups == [] -> [];
true -> [{displayed_groups, DispGroups}]
end,
OldMembers = get_group_explicit_users(Host,
Group),
SJIDs = str:tokens(SMembers, <<", \r\n">>),
NewMembers = lists:foldl(fun (_SJID, error) -> error;
(SJID, USs) ->
case SJID of
<<"@all@">> -> USs;
<<"@online@">> -> USs;
_ ->
try jid:decode(SJID) of
JID ->
[{JID#jid.luser,
JID#jid.lserver}
| USs]
catch _:{bad_jid, _} ->
error
end
end
end,
[], SJIDs),
AllUsersOpt = case lists:member(<<"@all@">>, SJIDs) of
true -> [{all_users, true}];
false -> []
end,
OnlineUsersOpt = case lists:member(<<"@online@">>,
SJIDs)
of
true -> [{online_users, true}];
false -> []
end,
CurrentDisplayedGroups = get_displayed_groups(Group, Host),
AddedDisplayedGroups = DispGroups -- CurrentDisplayedGroups,
RemovedDisplayedGroups = CurrentDisplayedGroups -- DispGroups,
displayed_groups_update(OldMembers, RemovedDisplayedGroups, remove),
displayed_groups_update(OldMembers, AddedDisplayedGroups, both),
set_group_opts(Host, Group,
NameOpt ++
DispGroupsOpt ++
DescriptionOpt ++
AllUsersOpt ++ OnlineUsersOpt),
if NewMembers == error -> error;
true ->
AddedMembers = NewMembers -- OldMembers,
RemovedMembers = OldMembers -- NewMembers,
lists:foreach(
fun(US) ->
remove_user_from_group(Host,
US,
Group)
end,
RemovedMembers),
NonAddedMembers = lists:filter(
fun(US) ->
error == add_user_to_group(Host, US,
Group)
end,
AddedMembers),
case NonAddedMembers of
[] -> ok;
_ -> {error_jids, NonAddedMembers}
end
end;
_ -> nothing
end.
get_opt(Opts, Opt, Default) ->
case lists:keysearch(Opt, 1, Opts) of
{value, {_, Val}} -> Val;
false -> Default
end.
us_to_list({User, Server}) ->
jid:encode({User, Server, <<"">>}).
split_grouphost(Host, Group) ->
case str:tokens(Group, <<"@">>) of
[GroupName, HostName] -> {HostName, GroupName};
[_] -> {Host, Group}
end.
displayed_groups_update(Members, DisplayedGroups, Subscription) ->
lists:foreach(
fun({U, S}) ->
push_displayed_to_user(U, S, S, Subscription, DisplayedGroups)
end, Members).
opts_to_binary(Opts) ->
lists:map(
fun({name, Name}) ->
{name, iolist_to_binary(Name)};
({description, Desc}) ->
{description, iolist_to_binary(Desc)};
({displayed_groups, Gs}) ->
{displayed_groups, [iolist_to_binary(G) || G <- Gs]};
(Opt) ->
Opt
end, Opts).
export(LServer) ->
Mod = gen_mod:db_mod(LServer, ?MODULE),
Mod:export(LServer).
import_info() ->
[{<<"sr_group">>, 3}, {<<"sr_user">>, 3}].
import_start(LServer, DBType) ->
Mod = gen_mod:db_mod(DBType, ?MODULE),
Mod:init(LServer, []).
import(LServer, {sql, _}, DBType, Tab, L) ->
Mod = gen_mod:db_mod(DBType, ?MODULE),
Mod:import(LServer, Tab, L).
mod_opt_type(db_type) ->
econf:db_type(?MODULE);
mod_opt_type(use_cache) ->
econf:bool();
mod_opt_type(cache_size) ->
econf:pos_int(infinity);
mod_opt_type(cache_missed) ->
econf:bool();
mod_opt_type(cache_life_time) ->
econf:timeout(second, infinity).
mod_options(Host) ->
[{db_type, ejabberd_config:default_db(Host, ?MODULE)},
{use_cache, ejabberd_option:use_cache(Host)},
{cache_size, ejabberd_option:cache_size(Host)},
{cache_missed, ejabberd_option:cache_missed(Host)},
{cache_life_time, ejabberd_option:cache_life_time(Host)}].
mod_doc() ->
#{desc =>
[?T("This module enables you to create shared roster groups: "
"groups of accounts that can see members from (other) groups "
"in their rosters."), "",
?T("The big advantages of this feature are that end users do not "
"need to manually add all users to their rosters, and that they "
"cannot permanently delete users from the shared roster groups. "
"A shared roster group can have members from any XMPP server, "
"but the presence will only be available from and to members of "
"the same virtual host where the group is created. It still "
"allows the users to have / add their own contacts, as it does "
"not replace the standard roster. Instead, the shared roster "
"contacts are merged to the relevant users at retrieval time. "
"The standard user rosters thus stay unmodified."), "",
?T("Shared roster groups can be edited only via the Web Admin. "
"Each group has unique identification and those parameters:"), "",
?T("- Name: The group's name will be displayed in the roster."), "",
?T("- Description: of the group, which has no effect."), "",
?T("- Members: A list of JIDs of group members, entered one per "
"line in the Web Admin. The special member directive '@all@' "
"represents all the registered users in the virtual host; "
"which is only recommended for a small server with just a few "
"hundred users. The special member directive '@online@' "
"represents the online users in the virtual host. With those "
"two directives, the actual list of members in those shared "
"rosters is generated dynamically at retrieval time."), "",
?T("- Displayed groups: A list of groups that will be in the "
"rosters of this group's members. A group of other vhost can "
"be identified with 'groupid@vhost'."), "",
?T("This module depends on 'mod_roster'. "
"If not enabled, roster queries will return 503 errors.")],
opts =>
[{db_type,
#{value => "mnesia | sql",
desc =>
?T("Define the type of storage where the module will create "
"the tables and store user information. The default is "
"the storage defined by the global option 'default_db', "
"or 'mnesia' if omitted. If 'sql' value is defined, "
"make sure you have defined the database.")}},
{use_cache,
#{value => "true | false",
desc =>
?T("Same as top-level 'use_cache' option, but applied to this module only.")}},
{cache_size,
#{value => "pos_integer() | infinity",
desc =>
?T("Same as top-level 'cache_size' option, but applied to this module only.")}},
{cache_missed,
#{value => "true | false",
desc =>
?T("Same as top-level 'cache_missed' option, but applied to this module only.")}},
{cache_life_time,
#{value => "timeout()",
desc =>
?T("Same as top-level 'cache_life_time' option, but applied to this module only.")}}],
example =>
[{?T("Take the case of a computer club that wants all its members "
"seeing each other in their rosters. To achieve this, they "
"need to create a shared roster group similar to this one:"),
["Identification: club_members",
"Name: Club Members",
"Description: Members from the computer club",
"Members: member1@example.org, member2@example.org, member3@example.org",
"Displayed Groups: club_members"]},
{?T("In another case we have a company which has three divisions: "
"Management, Marketing and Sales. All group members should see "
"all other members in their rosters. Additionally, all managers "
"should have all marketing and sales people in their roster. "
"Simultaneously, all marketeers and the whole sales team "
"should see all managers. This scenario can be achieved by "
"creating shared roster groups as shown in the following lists:"),
["First list:",
"Identification: management",
"Name: Management",
"Description: Management",
"Members: manager1@example.org, manager2@example.org",
"Displayed Groups: management, marketing, sales",
"",
"Second list:",
"Identification: marketing",
"Name: Marketing",
"Description: Marketing",
"Members: marketeer1@example.org, marketeer2@example.org, marketeer3@example.org",
"Displayed Groups: management, marketing",
"",
"Third list:",
"Identification: sales",
"Name: Sales",
"Description: Sales",
"Members: salesman1@example.org, salesman2@example.org, salesman3@example.org",
"Displayed Groups: management, sales"
]}
]}.
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