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xmpp.chapril.org-ejabberd/src/mod_shared_roster.erl
Badlop 2d2fcc8210 * doc/guide.tex: Updated copyright dates to 2008 
* src/*: Likewise

SVN Revision: 1153
2008-01-15 17:02:57 +00:00

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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) 2002-2008 Process-one
%%%
%%% 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., 59 Temple Place, Suite 330, Boston, MA
%%% 02111-1307 USA
%%%
%%%----------------------------------------------------------------------
-module(mod_shared_roster).
-author('alexey@process-one.net').
-behaviour(gen_mod).
-export([start/2, stop/1,
webadmin_menu/3, webadmin_page/3,
get_user_roster/2,
get_subscription_lists/3,
get_jid_info/4,
process_item/2,
in_subscription/6,
out_subscription/4,
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,
add_user_to_group/3,
remove_user_from_group/3]).
-include("ejabberd.hrl").
-include("jlib.hrl").
-include("mod_roster.hrl").
-include("web/ejabberd_http.hrl").
-include("web/ejabberd_web_admin.hrl").
-record(sr_group, {group_host, opts}).
-record(sr_user, {us, group_host}).
start(Host, _Opts) ->
mnesia:create_table(sr_group,
[{disc_copies, [node()]},
{attributes, record_info(fields, sr_group)}]),
mnesia:create_table(sr_user,
[{disc_copies, [node()]},
{type, bag},
{attributes, record_info(fields, sr_user)}]),
mnesia:add_table_index(sr_user, group_host),
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_subscription_lists, Host,
?MODULE, get_subscription_lists, 70),
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(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_subscription_lists, Host,
?MODULE, get_subscription_lists, 70),
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(remove_user, Host,
%% ?MODULE, remove_user, 50),
get_user_roster(Items, US) ->
{U, S} = US,
DisplayedGroups = get_user_displayed_groups(US),
%% Get shared roster users in all groups and remove self:
SRUsers =
lists:foldl(
fun(Group, Acc1) ->
lists:foldl(
fun(User, Acc2) ->
if User == US -> Acc2;
true -> dict:append(User,
get_group_name(S, Group),
Acc2)
end
end, Acc1, get_group_users(S, Group))
end, dict:new(), DisplayedGroups),
%% If partially subscribed users are also in shared roster, show them as
%% totally subscribed:
{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, ask = none},
dict:erase(US1, SRUsers1)};
error ->
{Item, SRUsers1}
end
end, SRUsers, Items),
%% Export items in roster format:
SRItems = [#roster{usj = {U, S, {U1, S1, ""}},
us = US,
jid = {U1, S1, ""},
name = "",
subscription = both,
ask = none,
groups = GroupNames} ||
{{U1, S1}, GroupNames} <- dict:to_list(SRUsersRest)],
SRItems ++ NewItems1.
%% This function in use to rewrite the roster entries when moving or renaming
%% them in the user contact list.
process_item(RosterItem, Host) ->
USFrom = RosterItem#roster.us,
{User,Server,_Resource} = RosterItem#roster.jid,
USTo = {User,Server},
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]};
_ -> RosterItem#roster{subscription = both, ask = none}
end.
get_subscription_lists({F, T}, User, Server) ->
LUser = jlib:nodeprep(User),
LServer = jlib:nameprep(Server),
US = {LUser, LServer},
DisplayedGroups = get_user_displayed_groups(US),
SRUsers =
lists:usort(
lists:flatmap(
fun(Group) ->
get_group_users(LServer, Group)
end, DisplayedGroups)),
SRJIDs = [{U1, S1, ""} || {U1, S1} <- SRUsers],
{lists:usort(SRJIDs ++ F), lists:usort(SRJIDs ++ T)}.
get_jid_info({Subscription, Groups}, User, Server, JID) ->
LUser = jlib:nodeprep(User),
LServer = jlib:nameprep(Server),
US = {LUser, LServer},
{U1, S1, _} = jlib:jid_tolower(JID),
US1 = {U1, S1},
DisplayedGroups = get_user_displayed_groups(US),
SRUsers =
lists:foldl(
fun(Group, Acc1) ->
lists:foldl(
fun(User1, Acc2) ->
dict:append(
User1, get_group_name(LServer, Group), 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, NewGroups};
error ->
{Subscription, Groups}
end.
in_subscription(Acc, User, Server, JID, Type, _Reason) ->
process_subscription(in, User, Server, JID, Type, Acc).
out_subscription(User, Server, JID, Type) ->
process_subscription(out, User, Server, JID, Type, false).
process_subscription(Direction, User, Server, JID, _Type, Acc) ->
LUser = jlib:nodeprep(User),
LServer = jlib:nameprep(Server),
US = {LUser, LServer},
{U1, S1, _} = jlib:jid_tolower(jlib: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) ->
mnesia:dirty_select(
sr_group,
[{#sr_group{group_host = {'$1', '$2'},
_ = '_'},
[{'==', '$2', Host}],
['$1']}]).
create_group(Host, Group) ->
create_group(Host, Group, []).
create_group(Host, Group, Opts) ->
R = #sr_group{group_host = {Group, Host}, opts = Opts},
F = fun() ->
mnesia:write(R)
end,
mnesia:transaction(F).
delete_group(Host, Group) ->
GroupHost = {Group, Host},
F = fun() ->
%% Delete the group ...
mnesia:delete({sr_group, GroupHost}),
%% ... and its users
Users = mnesia:index_read(sr_user, GroupHost, #sr_user.group_host),
lists:foreach(fun(UserEntry) ->
mnesia:delete_object(UserEntry)
end, Users)
end,
mnesia:transaction(F).
get_group_opts(Host, Group) ->
case catch mnesia:dirty_read(sr_group, {Group, Host}) of
[#sr_group{opts = Opts}] ->
Opts;
_ ->
error
end.
set_group_opts(Host, Group, Opts) ->
R = #sr_group{group_host = {Group, Host}, opts = Opts},
F = fun() ->
mnesia:write(R)
end,
mnesia:transaction(F).
get_user_groups(US) ->
Host = element(2, US),
case catch mnesia:dirty_read(sr_user, US) of
Rs when is_list(Rs) ->
[Group || #sr_user{group_host = {Group, H}} <- Rs, H == Host];
_ ->
[]
end ++ get_all_users_groups(Host).
is_group_enabled(Host, Group) ->
case catch mnesia:dirty_read(sr_group, {Group, Host}) of
[#sr_group{opts = Opts}] ->
not lists:member(disabled, Opts);
_ ->
false
end.
get_group_opt(Host, Group, Opt, Default) ->
case catch mnesia:dirty_read(sr_group, {Group, Host}) of
[#sr_group{opts = Opts}] ->
case lists:keysearch(Opt, 1, Opts) of
{value, {_, Val}} ->
Val;
false ->
Default
end;
_ ->
false
end.
get_group_users(Host, Group) ->
case get_group_opt(Host, Group, all_users, false) of
true ->
ejabberd_auth:get_vh_registered_users(Host);
false ->
[]
end ++ get_group_explicit_users(Host, Group).
get_group_explicit_users(Host, Group) ->
case catch mnesia:dirty_index_read(
sr_user, {Group, Host}, #sr_user.group_host) of
Rs when is_list(Rs) ->
[R#sr_user.us || R <- Rs];
_ ->
[]
end.
get_group_name(Host, Group) ->
get_group_opt(Host, Group, name, Group).
get_all_users_groups(Host) ->
lists:filter(
fun(Group) -> get_group_opt(Host, Group, all_users, false) end,
list_groups(Host)).
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) ->
case catch mnesia:dirty_match_object(
#sr_user{us=US, group_host={Group, Host}}) of
[] -> false;
_ -> true
end.
add_user_to_group(Host, US, Group) ->
R = #sr_user{us = US, group_host = {Group, Host}},
F = fun() ->
mnesia:write(R)
end,
mnesia:transaction(F).
remove_user_from_group(Host, US, Group) ->
GroupHost = {Group, Host},
R = #sr_user{us = US, group_host = GroupHost},
F = fun() ->
mnesia:delete_object(R)
end,
mnesia:transaction(F).
%%---------------------
%% Web Admin
%%---------------------
webadmin_menu(Acc, _Host, Lang) ->
[{"shared-roster", ?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 = mod_shared_roster:list_groups(Host),
FGroups =
?XAE("table", [],
[?XE("tbody",
lists:map(
fun(Group) ->
?XE("tr",
[?XE("td", [?INPUT("checkbox", "selected",
Group)]),
?XE("td", [?AC(Group ++ "/", Group)])
]
)
end, lists:sort(SRGroups)) ++
[?XE("tr",
[?X("td"),
?XE("td", [?INPUT("text", "namenew", "")]),
?XE("td", [?INPUTT("submit", "addnew", "Add New")])
]
)]
)]),
[?XC("h1", ?T("Shared Roster Groups"))] ++
case Res of
ok -> [?CT("Submitted"), ?P];
error -> [?CT("Bad format"), ?P];
nothing -> []
end ++
[?XAE("form", [{"action", ""}, {"method", "post"}],
[FGroups,
?BR,
?INPUTT("submit", "delete", "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 /= "" ->
mod_shared_roster:create_group(Host, Group),
ok;
_ ->
error
end.
list_sr_groups_parse_delete(Host, Query) ->
SRGroups = mod_shared_roster:list_groups(Host),
lists:foreach(
fun(Group) ->
case lists:member({"selected", Group}, Query) of
true ->
mod_shared_roster: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 = mod_shared_roster:get_group_opts(Host, Group),
Name = get_opt(GroupOpts, name, ""),
Description = get_opt(GroupOpts, description, ""),
AllUsers = get_opt(GroupOpts, all_users, false),
%%Disabled = false,
DisplayedGroups = get_opt(GroupOpts, displayed_groups, []),
Members = mod_shared_roster:get_group_explicit_users(Host, Group),
FMembers =
if
AllUsers ->
"@all@\n";
true ->
[]
end ++ [[us_to_list(Member), $\n] || Member <- Members],
FDisplayedGroups = [[DG, $\n] || DG <- DisplayedGroups],
FGroup =
?XAE("table", [],
[?XE("tbody",
[?XE("tr",
[?XCT("td", "Name:"),
?XE("td", [?INPUT("text", "name", Name)])
]
),
?XE("tr",
[?XCT("td", "Description:"),
?XE("td", [?XAC("textarea", [{"name", "description"},
{"rows", "3"},
{"cols", "20"}],
Description)])
]
),
?XE("tr",
[?XCT("td", "Members:"),
?XE("td", [?XAC("textarea", [{"name", "members"},
{"rows", "3"},
{"cols", "20"}],
FMembers)])
]
),
?XE("tr",
[?XCT("td", "Displayed Groups:"),
?XE("td", [?XAC("textarea", [{"name", "dispgroups"},
{"rows", "3"},
{"cols", "20"}],
FDisplayedGroups)])
]
)]
)]),
[?XC("h1", ?T("Shared Roster Groups"))] ++
[?XC("h2", ?T("Group ") ++ Group)] ++
case Res of
ok -> [?CT("Submitted"), ?P];
error -> [?CT("Bad format"), ?P];
nothing -> []
end ++
[?XAE("form", [{"action", ""}, {"method", "post"}],
[FGroup,
?BR,
?INPUTT("submit", "submit", "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 = string:tokens(SDispGroups, "\r\n"),
DispGroupsOpt =
if
DispGroups == [] -> [];
true -> [{displayed_groups, DispGroups}]
end,
OldMembers = mod_shared_roster:get_group_explicit_users(
Host, Group),
SJIDs = string:tokens(SMembers, ", \r\n"),
NewMembers =
lists:foldl(
fun(_SJID, error) -> error;
(SJID, USs) ->
case SJID of
"@all@" ->
USs;
_ ->
case jlib:string_to_jid(SJID) of
JID when is_record(JID, jid) ->
[{JID#jid.luser, JID#jid.lserver} | USs];
error ->
error
end
end
end, [], SJIDs),
AllUsersOpt =
case lists:member("@all@", SJIDs) of
true -> [{all_users, true}];
false -> []
end,
mod_shared_roster:set_group_opts(
Host, Group,
NameOpt ++ DispGroupsOpt ++ DescriptionOpt ++ AllUsersOpt),
if
NewMembers == error -> error;
true ->
AddedMembers = NewMembers -- OldMembers,
RemovedMembers = OldMembers -- NewMembers,
lists:foreach(
fun(US) ->
mod_shared_roster:remove_user_from_group(
Host, US, Group)
end, RemovedMembers),
lists:foreach(
fun(US) ->
mod_shared_roster:add_user_to_group(
Host, US, Group)
end, AddedMembers),
ok
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}) ->
jlib:jid_to_string({User, Server, ""}).
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