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Add support for '@online@' Shared Roster Group (thanks to Martin Langhoff)(EJAB-1391)
New version of the @online@ patch originally by Collabora. Notes: - the presence push is mediated via the group rather than per user - this may reduce memory footprint... _if_ ejabberd has some smart optimisation in that codepath - it assumes that any group with membership @online@ _displays_ online as well -- this is a simplification and breaks the decoupling that ejabberd has in this regard.
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Badlop
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@ -4055,11 +4055,13 @@ has a unique identification and the following parameters:
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\item[Name] The name of the group, which will be displayed in the roster.
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\item[Description] The description of the group. This parameter does not affect
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anything.
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\item[Members] A list of full JIDs of group members, entered one per line in
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\item[Members] A list of JIDs of group members, entered one per line in
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the Web Admin.
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To put as members all the registered users in the virtual hosts,
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you can use the special directive: @all@.
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Note that this directive is designed for a small server with just a few hundred users.
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The special member directive \term{@all@}
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represents all the registered users in the virtual host;
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which is only recommended for a small server with just a few hundred users.
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The special member directive \term{@online@}
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represents the online users in the virtual host.
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\item[Displayed groups] A list of groups that will be in the rosters of this
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group's members.
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\end{description}
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@ -37,6 +37,8 @@
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process_item/2,
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in_subscription/6,
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out_subscription/4,
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user_available/1,
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unset_presence/4,
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register_user/2,
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remove_user/2,
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list_groups/1,
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@ -85,6 +87,10 @@ start(Host, _Opts) ->
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?MODULE, get_jid_info, 70),
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ejabberd_hooks:add(roster_process_item, Host,
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?MODULE, process_item, 50),
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ejabberd_hooks:add(user_available_hook, Host,
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?MODULE, user_available, 50),
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ejabberd_hooks:add(unset_presence_hook, Host,
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?MODULE, unset_presence, 50),
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ejabberd_hooks:add(register_user, Host,
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?MODULE, register_user, 50),
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ejabberd_hooks:add(remove_user, Host,
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@ -109,6 +115,10 @@ stop(Host) ->
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?MODULE, get_jid_info, 70),
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ejabberd_hooks:delete(roster_process_item, Host,
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?MODULE, process_item, 50),
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ejabberd_hooks:delete(user_available_hook, Host,
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?MODULE, user_available, 50),
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ejabberd_hooks:delete(unset_presence_hook, Host,
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?MODULE, unset_presence, 50),
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ejabberd_hooks:delete(register_user, Host,
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?MODULE, register_user, 50),
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ejabberd_hooks:delete(remove_user, Host,
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@ -470,21 +480,38 @@ get_group_opt(Host, Group, Opt, Default) ->
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Default
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end.
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get_online_users(Host) ->
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lists:usort([{U, S} || {U, S, _} <- ejabberd_sm:get_vh_session_list(Host)]).
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get_group_users(Host, Group) ->
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case get_group_opt(Host, Group, all_users, false) of
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true ->
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ejabberd_auth:get_vh_registered_users(Host);
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false ->
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[]
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end ++ get_group_explicit_users(Host, Group).
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end ++
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case get_group_opt(Host, Group, online_users, false) of
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true ->
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get_online_users(Host);
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false ->
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[]
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end ++
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get_group_explicit_users(Host, Group).
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get_group_users(_User, Host, Group, GroupOpts) ->
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get_group_users(Host, Group, GroupOpts) ->
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case proplists:get_value(all_users, GroupOpts, false) of
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true ->
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ejabberd_auth:get_vh_registered_users(Host);
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false ->
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[]
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end ++ get_group_explicit_users(Host, Group).
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end ++
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case proplists:get_value(online_users, GroupOpts, false) of
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true ->
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get_online_users(Host);
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false ->
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[]
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end ++
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get_group_explicit_users(Host, Group).
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%% @spec (Host::string(), Group::string()) -> [{User::string(), Server::string()}]
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get_group_explicit_users(Host, Group) ->
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@ -502,11 +529,20 @@ get_group_explicit_users(Host, Group) ->
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get_group_name(Host, Group) ->
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get_group_opt(Host, Group, name, Group).
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%% Get list of names of groups that have @all@ in the memberlist
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%% Get list of names of groups that have @all@/@online@/etc in the memberlist
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get_special_users_groups(Host) ->
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lists:filter(
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fun(Group) ->
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get_group_opt(Host, Group, all_users, false)
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orelse get_group_opt(Host, Group, online_users, false)
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end,
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list_groups(Host)).
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%% Get list of names of groups that have @online@ in the memberlist
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get_special_users_groups_online(Host) ->
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lists:filter(
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fun(Group) ->
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get_group_opt(Host, Group, online_users, false)
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end,
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list_groups(Host)).
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@ -661,7 +697,7 @@ push_user_to_members(User, Server, Subscription) ->
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lists:foreach(
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fun({U, S}) ->
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push_roster_item(U, S, LUser, LServer, GroupName, Subscription)
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end, get_group_users(LUser, LServer, Group, GroupOpts))
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end, get_group_users(LServer, Group, GroupOpts))
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end, lists:usort(SpecialGroups++UserGroups)).
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push_user_to_displayed(LUser, LServer, Group, Subscription) ->
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@ -673,7 +709,8 @@ push_user_to_displayed(LUser, LServer, Group, Subscription) ->
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push_user_to_group(LUser, LServer, Group, GroupName, Subscription) ->
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lists:foreach(
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fun({U, S}) ->
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fun({U, S}) when (U == LUser) and (S == LServer) -> ok;
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({U, S}) ->
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push_roster_item(U, S, LUser, LServer, GroupName, Subscription)
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end, get_group_users(LServer, Group)).
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@ -757,6 +794,51 @@ ask_to_pending(subscribe) -> out;
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ask_to_pending(unsubscribe) -> none;
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ask_to_pending(Ask) -> Ask.
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user_available(New) ->
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LUser = New#jid.luser,
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LServer = New#jid.lserver,
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Resources = ejabberd_sm:get_user_resources(LUser, LServer),
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?DEBUG("user_available for ~p @ ~p (~p resources)",
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[LUser, LServer, length(Resources)]),
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case length(Resources) of
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%% first session for this user
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1 ->
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%% This is a simplification - we ignore he 'display'
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%% property - @online@ is always reflective.
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OnlineGroups = get_special_users_groups_online(LServer),
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lists:foreach(
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fun(OG) ->
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?DEBUG("user_available: pushing ~p @ ~p grp ~p",
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[LUser, LServer, OG ]),
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push_user_to_displayed(LUser, LServer, OG, both)
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end, OnlineGroups);
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_ ->
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ok
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end.
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unset_presence(LUser, LServer, Resource, Status) ->
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Resources = ejabberd_sm:get_user_resources(LUser, LServer),
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?DEBUG("unset_presence for ~p @ ~p / ~p -> ~p (~p resources)",
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[LUser, LServer, Resource, Status, length(Resources)]),
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%% if user has no resources left...
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case length(Resources) of
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0 ->
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%% This is a simplification - we ignore he 'display'
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%% property - @online@ is always reflective.
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OnlineGroups = get_special_users_groups_online(LServer),
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%% for each of these groups...
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lists:foreach(
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fun(OG) ->
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%% Push removal of the old user to members of groups
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%% where the group that this uwas members was displayed
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push_user_to_displayed(LUser, LServer, OG, remove),
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%% Push removal of members of groups that where
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%% displayed to the group which thiuser has left
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push_displayed_to_user(LUser, LServer, OG, LServer,remove)
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end, OnlineGroups);
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_ ->
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ok
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end.
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%%---------------------
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%% Web Admin
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@ -860,6 +942,7 @@ shared_roster_group(Host, Group, Query, Lang) ->
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Name = get_opt(GroupOpts, name, ""),
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Description = get_opt(GroupOpts, description, ""),
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AllUsers = get_opt(GroupOpts, all_users, false),
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OnlineUsers = get_opt(GroupOpts, online_users, false),
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%%Disabled = false,
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DisplayedGroups = get_opt(GroupOpts, displayed_groups, []),
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Members = mod_shared_roster:get_group_explicit_users(Host, Group),
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@ -869,7 +952,14 @@ shared_roster_group(Host, Group, Query, Lang) ->
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"@all@\n";
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true ->
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[]
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end ++ [[us_to_list(Member), $\n] || Member <- Members],
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end ++
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if
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OnlineUsers ->
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"@online@\n";
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true ->
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[]
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end ++
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[[us_to_list(Member), $\n] || Member <- Members],
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FDisplayedGroups = [[DG, $\n] || DG <- DisplayedGroups],
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DescNL = length(element(2, regexp:split(Description, "\n"))),
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FGroup =
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@ -953,6 +1043,8 @@ shared_roster_group_parse_query(Host, Group, Query) ->
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case SJID of
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"@all@" ->
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USs;
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"@online@" ->
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USs;
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_ ->
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case jlib:string_to_jid(SJID) of
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JID when is_record(JID, jid) ->
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@ -967,10 +1059,15 @@ shared_roster_group_parse_query(Host, Group, Query) ->
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true -> [{all_users, true}];
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false -> []
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end,
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OnlineUsersOpt =
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case lists:member("@online@", SJIDs) of
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true -> [{online_users, true}];
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false -> []
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end,
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mod_shared_roster:set_group_opts(
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Host, Group,
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NameOpt ++ DispGroupsOpt ++ DescriptionOpt ++ AllUsersOpt),
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NameOpt ++ DispGroupsOpt ++ DescriptionOpt ++ AllUsersOpt ++ OnlineUsersOpt),
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if
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NewMembers == error -> error;
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