./ct_report/coverage/mod_roster.COVER.html

1 %%%----------------------------------------------------------------------
2 %%% File : mod_roster.erl
3 %%% Author : Alexey Shchepin <alexey@process-one.net>
4 %%% Purpose : Roster management
5 %%% Created : 11 Dec 2002 by Alexey Shchepin <alexey@process-one.net>
6 %%%
7 %%%
8 %%% ejabberd, Copyright (C) 2002-2013 ProcessOne
9 %%%
10 %%% This program is free software; you can redistribute it and/or
11 %%% modify it under the terms of the GNU General Public License as
12 %%% published by the Free Software Foundation; either version 2 of the
13 %%% License, or (at your option) any later version.
14 %%%
15 %%% This program is distributed in the hope that it will be useful,
16 %%% but WITHOUT ANY WARRANTY; without even the implied warranty of
17 %%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 %%% General Public License for more details.
19 %%%
20 %%% You should have received a copy of the GNU General Public License
21 %%% along with this program; if not, write to the Free Software
22 %%% Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 %%%
24 %%%----------------------------------------------------------------------
25
26 %%% @doc Roster management.
27 %%%
28 %%% Includes support for XEP-0237: Roster Versioning.
29 %%% The roster versioning follows an all-or-nothing strategy:
30 %%% - If the version supplied by the client is the latest, return an empty response.
31 %%% - If not, return the entire new roster (with updated version string).
32 %%% Roster version is a hash digest of the entire roster.
33 %%% No additional data is stored in DB.
34
35 -module(mod_roster).
36 -author('alexey@process-one.net').
37 -xep([{xep, 237}, {version, "1.3"}]).
38 -xep([{xep, 83}, {version, "1.0"}]).
39 -xep([{xep, 93}, {version, "1.2"}]).
40 -behaviour(gen_mod).
41 -behaviour(mongoose_module_metrics).
42
43 -export([start/2,
44 stop/1,
45 hooks/1,
46 config_spec/0,
47 supported_features/0,
48 process_iq/5,
49 get_roster_entry/4,
50 item_to_map/1,
51 set_roster_entry/5,
52 remove_from_roster/3,
53 item_to_xml/1
54 ]).
55
56 % Hook handlers
57 -export([
58 get_user_roster/3,
59 in_subscription/3,
60 out_subscription/3,
61 get_subscription_lists/3,
62 get_jid_info/3,
63 remove_user/3,
64 remove_domain/3,
65 get_versioning_feature/3,
66 get_personal_data/3
67 ]).
68
69 -export([set_items/3,
70 transaction/2,
71 process_subscription_t/6,
72 get_user_rosters_length/2]). % for testing
73
74 -export([config_metrics/1]).
75
76 -ignore_xref([get_user_rosters_length/2,
77 item_to_xml/1,
78 process_subscription_t/6,
79 set_items/3,
80 transaction/2
81 ]).
82
83 -include("mongoose.hrl").
84 -include("jlib.hrl").
85 -include("mod_roster.hrl").
86 -include("mongoose_config_spec.hrl").
87
88 -export_type([roster/0, sub_presence/0, subscription_state/0]).
89
90 -type roster() :: #roster{}.
91
92 -type sub_presence() :: subscribe | subscribed | unsubscribe | unsubscribed.
93
94 -type subscription_state() :: none | from | to | both | remove.
95
96 -type get_user_roster_strategy() :: db_versioning | hash_versioning | no_versioning.
97
98 %% Types used in the backend API
99
100 -type contact() :: jid:simple_jid().
101 -type transaction_state() :: in_transaction | no_transaction.
102 -type entry_format() :: full | short.
103 -type version() :: binary().
104
105 -export_type([contact/0, transaction_state/0, entry_format/0, version/0]).
106
107 %%--------------------------------------------------------------------
108 %% gdpr callback
109 %%--------------------------------------------------------------------
110
111 -spec get_personal_data(Acc, Params, Extra) -> {ok, Acc} when
112 Acc :: gdpr:personal_data(),
113 Params :: #{jid := jid:jid()},
114 Extra :: gen_hook:extra().
115 get_personal_data(Acc, #{jid := #jid{luser = LUser, lserver = LServer}}, #{host_type := HostType}) ->
116 47 Schema = ["jid", "name", "subscription", "ask", "groups", "askmessage", "xs"],
117 47 Records = get_roster(HostType, LUser, LServer),
118 47 SerializedRecords = lists:map(fun roster_record_to_gdpr_entry/1, Records),
119 47 {ok, [{roster, Schema, SerializedRecords} | Acc]}.
120
121 -spec roster_record_to_gdpr_entry(roster()) -> gdpr:entry().
122 roster_record_to_gdpr_entry(#roster{ jid = JID, name = Name,
123 subscription = Subscription, ask = Ask, groups = Groups,
124 askmessage = AskMessage, xs = XS }) ->
125 2 [
126 jid:to_binary(JID),
127 Name,
128 atom_to_binary(Subscription, utf8),
129 atom_to_binary(Ask, utf8),
130 
:-(
 string:join([ unicode:characters_to_list(G) || G <- Groups ], ", "),
131 AskMessage,
132 
:-(
 << (exml:to_binary(X)) || X <- XS >>
133 ].
134
135 %%--------------------------------------------------------------------
136 %% mod_roster's callbacks
137 %%--------------------------------------------------------------------
138
139 -spec start(mongooseim:host_type(), gen_mod:module_opts()) -> any().
140 start(HostType, Opts = #{iqdisc := IQDisc}) ->
141 436 mod_roster_backend:init(HostType, Opts),
142 436 gen_iq_handler:add_iq_handler_for_domain(HostType, ?NS_ROSTER, ejabberd_sm,
143 fun ?MODULE:process_iq/5, #{}, IQDisc).
144
145 -spec stop(mongooseim:host_type()) -> any().
146 stop(HostType) ->
147 426 gen_iq_handler:remove_iq_handler_for_domain(HostType, ?NS_ROSTER, ejabberd_sm).
148
149 -spec config_spec() -> mongoose_config_spec:config_section().
150 config_spec() ->
151 202 #section{
152 items = #{<<"iqdisc">> => mongoose_config_spec:iqdisc(),
153 <<"versioning">> => #option{type = boolean},
154 <<"store_current_id">> => #option{type = boolean},
155 <<"backend">> => #option{type = atom,
156 validate = {module, mod_roster}}
157 },
158 defaults = #{<<"iqdisc">> => one_queue,
159 <<"versioning">> => false,
160 <<"store_current_id">> => false,
161 <<"backend">> => mnesia}
162 }.
163
164 198 supported_features() -> [dynamic_domains].
165
166 hooks(HostType) ->
167 862 [{roster_get, HostType, fun ?MODULE:get_user_roster/3, #{}, 50},
168 {roster_in_subscription, HostType, fun ?MODULE:in_subscription/3, #{}, 50},
169 {roster_out_subscription, HostType, fun ?MODULE:out_subscription/3, #{}, 50},
170 {roster_get_subscription_lists, HostType, fun ?MODULE:get_subscription_lists/3, #{}, 50},
171 {roster_get_jid_info, HostType, fun ?MODULE:get_jid_info/3, #{}, 50},
172 {remove_user, HostType, fun ?MODULE:remove_user/3, #{}, 50},
173 {remove_domain, HostType, fun ?MODULE:remove_domain/3, #{}, 50},
174 {anonymous_purge_hook, HostType, fun ?MODULE:remove_user/3, #{}, 50},
175 {roster_get_versioning_feature, HostType, fun ?MODULE:get_versioning_feature/3, #{}, 50},
176 {get_personal_data, HostType, fun ?MODULE:get_personal_data/3, #{}, 50}].
177
178 -spec process_iq(mongoose_acc:t(), jid:jid(), jid:jid(), jlib:iq(), map()) ->
179 {mongoose_acc:t(), jlib:iq()}.
180 process_iq(Acc, From = #jid{lserver = LServer, luser = LUser},
181 To = #jid{lserver = LServer, luser = LUser}, IQ, _Extra) ->
182 55 process_local_iq(Acc, From, To, IQ);
183 process_iq(Acc, _From, _To, IQ = #iq{lang = Lang, sub_el = SubEl}, _Extra) ->
184 %% Error type 'forbidden' is specified in Section 2.3.3 of RFC6121 for iq set.
185 %% The behaviour is unspecified for iq get, but it makes sense to handle them consistently.
186 2 ErrorMsg = <<"It is forbidden to query the roster of another user">>,
187 2 ErrorEl = mongoose_xmpp_errors:forbidden(Lang, ErrorMsg),
188 2 {Acc, IQ#iq{type = error, sub_el = [SubEl, ErrorEl]}}.
189
190 -spec process_local_iq(mongoose_acc:t(), jid:jid(), jid:jid(), jlib:iq()) ->
191 {mongoose_acc:t(), jlib:iq()}.
192 process_local_iq(Acc, From, To, #iq{type = Type} = IQ) ->
193 55 HostType = mongoose_acc:host_type(Acc),
194 55 IQReply = case Type of
195 30 set -> process_iq_set(HostType, From, To, IQ);
196 25 get -> process_iq_get(HostType, From, To, IQ)
197 end,
198 55 {Acc, IQReply}.
199
200 roster_hash(Items) ->
201 4 L = [R#roster{groups = lists:sort(Grs)} ||
202 4 R = #roster{groups = Grs} <- Items],
203 4 mongoose_bin:encode_crypto(term_to_binary(lists:sort(L))).
204
205 -spec roster_versioning_enabled(mongooseim:host_type()) -> boolean().
206 roster_versioning_enabled(HostType) ->
207 3777 gen_mod:get_module_opt(HostType, ?MODULE, versioning, false).
208
209 -spec roster_version_on_db(mongooseim:host_type()) -> boolean().
210 roster_version_on_db(HostType) ->
211 762 gen_mod:get_module_opt(HostType, ?MODULE, store_current_id, false).
212
213 %% Returns a list that may contain an xmlel with the XEP-237 feature if it's enabled.
214 -spec get_versioning_feature(Acc, Params, Extra) -> {ok, Acc} when
215 Acc :: [exml:element()],
216 Params :: map(),
217 Extra :: gen_hook:extra().
218 get_versioning_feature(Acc, _, #{host_type := HostType}) ->
219 3090 NewAcc = case roster_versioning_enabled(HostType) of
220 true ->
221 4 Feature = #xmlel{name = <<"ver">>,
222 attrs = [{<<"xmlns">>, ?NS_ROSTER_VER}]},
223 4 [Feature | Acc];
224 3086 false -> []
225 end,
226 3090 {ok, NewAcc}.
227
228 roster_version(HostType, #jid{luser = LUser, lserver = LServer} = JID) ->
229 2 case roster_version_on_db(HostType) of
230 true ->
231 1 case read_roster_version(HostType, LUser, LServer) of
232 
:-(
 error -> not_found;
233 1 V -> V
234 end;
235 false ->
236 1 R = get_roster_old(HostType, JID),
237 1 roster_hash(R)
238 end.
239
240 %% Load roster from DB only if neccesary.
241 %% It is neccesary if
242 %% - roster versioning is disabled in server OR
243 %% - roster versioning is not used by the client OR
244 %% - roster versioning is used by server and client,
245 %% BUT the server isn't storing versions on db OR
246 %% - the roster version from client don't match current version.
247 -spec process_iq_get(mongooseim:host_type(), jid:jid(), jid:jid(), jlib:iq()) -> jlib:iq().
248 process_iq_get(HostType, From, To, #iq{sub_el = SubEl} = IQ) ->
249 25 AttrVer = exml_query:attr(SubEl, <<"ver">>), %% type binary() | undefined
250 25 VersioningRequested = is_binary(AttrVer),
251 25 VersioningEnabled = roster_versioning_enabled(HostType),
252 25 VersionOnDb = roster_version_on_db(HostType),
253 25 Strategy = choose_get_user_roster_strategy(VersioningRequested, VersioningEnabled, VersionOnDb),
254 25 {ItemsToSend, VersionToSend} =
255 get_user_roster_based_on_version(HostType, Strategy, AttrVer, From, To),
256 25 IQ#iq{type = result, sub_el = create_sub_el(ItemsToSend, VersionToSend)}.
257
258 -spec choose_get_user_roster_strategy(VersioningRequested :: boolean(),
259 VersioningEnabled :: boolean(),
260 VersionOnDb :: boolean()) ->
261 get_user_roster_strategy().
262 3 choose_get_user_roster_strategy(true, true, true) -> db_versioning;
263 3 choose_get_user_roster_strategy(true, true, false) -> hash_versioning;
264 19 choose_get_user_roster_strategy(_, _, _) -> no_versioning.
265
266 get_user_roster_based_on_version(HostType, db_versioning, RequestedVersion, From, To) ->
267 3 get_user_roster_db_versioning(HostType, RequestedVersion, From, To);
268 get_user_roster_based_on_version(HostType, hash_versioning, RequestedVersion, From, To) ->
269 3 get_user_roster_hash_versioning(HostType, RequestedVersion, From, To);
270 get_user_roster_based_on_version(HostType, no_versioning, _RequestedVersion, From, To) ->
271 19 get_user_roster_no_versioning(HostType, From, To).
272
273 get_user_roster_db_versioning(HostType, RequestedVersion, From, To)
274 when is_binary(RequestedVersion) ->
275 3 LUser = From#jid.luser,
276 3 LServer = From#jid.lserver,
277 3 case read_roster_version(HostType, LUser, LServer) of
278 error ->
279 1 RosterVersion = write_roster_version(HostType, LUser, LServer),
280 1 {lists:map(fun item_to_xml/1,
281 get_roster_old(HostType, To#jid.lserver, From)),
282 RosterVersion};
283 RequestedVersion ->
284 1 {false, false};
285 NewVersion ->
286 1 {lists:map(fun item_to_xml/1,
287 get_roster_old(HostType, To#jid.lserver, From)),
288 NewVersion}
289 end.
290
291 get_user_roster_hash_versioning(HostType, RequestedVersion, From, To)
292 when is_binary(RequestedVersion) ->
293 3 RosterItems = get_roster_old(HostType, To#jid.lserver, From),
294 3 case roster_hash(RosterItems) of
295 RequestedVersion ->
296 1 {false, false};
297 New ->
298 2 {lists:map(fun item_to_xml/1, RosterItems), New}
299 end.
300
301 get_user_roster_no_versioning(HostType, From, To) ->
302 19 {lists:map(fun item_to_xml/1,
303 get_roster_old(HostType, To#jid.lserver, From)),
304 false}.
305
306 create_sub_el(false, false) ->
307 2 [];
308 create_sub_el(Items, false) ->
309 19 [#xmlel{name = <<"query">>,
310 attrs = [{<<"xmlns">>, ?NS_ROSTER}],
311 children = Items}];
312 create_sub_el(Items, Version) ->
313 4 [#xmlel{name = <<"query">>,
314 attrs = [{<<"xmlns">>, ?NS_ROSTER},
315 {<<"ver">>, Version}],
316 children = Items}].
317
318 -spec get_user_roster(Acc, Params, Extra) -> {ok, Acc} when
319 Acc :: mongoose_acc:t(),
320 Params :: #{jid := jid:jid()},
321 Extra :: gen_hook:extra().
322 get_user_roster(Acc, #{jid := #jid{luser = LUser, lserver = LServer}}, #{host_type := HostType}) ->
323 132 NewAcc = get_user_roster(Acc, LUser, LServer, HostType),
324 132 {ok, NewAcc}.
325
326 -spec get_user_roster(mongoose_acc:t(),
327 jid:luser(),
328 jid:lserver(),
329 mongooseim:host_type()) -> mongoose_acc:t().
330 get_user_roster(Acc, LUser, LServer, HostType) ->
331 2949 case mongoose_acc:get(roster, show_full_roster, false, Acc) of
332 true ->
333 75 Roster = get_roster(HostType, LUser, LServer),
334 75 mongoose_acc:append(roster, items, Roster, Acc);
335 _ ->
336 2874 Roster = lists:filter(fun (#roster{subscription = none, ask = in}) ->
337 3 false;
338 (_) ->
339 163 true
340 end, get_roster(HostType, LUser, LServer)),
341 2874 mongoose_acc:append(roster, items, Roster, Acc)
342 end.
343
344 item_to_xml(Item) ->
345 579 Attrs1 = [{<<"jid">>,
346 jid:to_binary(Item#roster.jid)}],
347 579 Attrs2 = case Item#roster.name of
348 243 <<"">> -> Attrs1;
349 336 Name -> [{<<"name">>, Name} | Attrs1]
350 end,
351 579 Attrs3 = case Item#roster.subscription of
352 313 none -> [{<<"subscription">>, <<"none">>} | Attrs2];
353 70 from -> [{<<"subscription">>, <<"from">>} | Attrs2];
354 77 to -> [{<<"subscription">>, <<"to">>} | Attrs2];
355 98 both -> [{<<"subscription">>, <<"both">>} | Attrs2];
356 21 remove -> [{<<"subscription">>, <<"remove">>} | Attrs2]
357 end,
358 579 Attrs4 = case ask_to_pending(Item#roster.ask) of
359 122 out -> [{<<"ask">>, <<"subscribe">>} | Attrs3];
360 92 both -> [{<<"ask">>, <<"subscribe">>} | Attrs3];
361 365 _ -> Attrs3
362 end,
363 579 SubEls1 = lists:map(fun (G) ->
364 245 #xmlel{name = <<"group">>, attrs = [],
365 children = [{xmlcdata, G}]}
366 end,
367 Item#roster.groups),
368 579 SubEls = SubEls1 ++ Item#roster.xs,
369 579 #xmlel{name = <<"item">>, attrs = Attrs4,
370 children = SubEls}.
371
372 -spec process_iq_set(mongooseim:host_type(), jid:jid(), jid:jid(), jlib:iq()) -> jlib:iq().
373 process_iq_set(HostType, From, To, #iq{sub_el = SubEl} = IQ) ->
374 30 #xmlel{children = Els} = SubEl,
375 30 mongoose_hooks:roster_set(HostType, From, To, SubEl),
376 30 lists:foreach(fun(El) -> process_item_set(HostType, From, To, El) end, Els),
377 30 IQ#iq{type = result, sub_el = []}.
378
379 -spec process_item_set(mongooseim:host_type(), jid:jid(), jid:jid(), exml:element()) -> ok.
380 process_item_set(HostType, From, To, #xmlel{attrs = Attrs} = El) ->
381 30 JID1 = jid:from_binary(xml:get_attr_s(<<"jid">>, Attrs)),
382 30 do_process_item_set(HostType, JID1, From, To, El);
383 
:-(
 process_item_set(_HostType, _From, _To, _) -> ok.
384
385 -spec do_process_item_set(mongooseim:host_type(), error | jid:jid(), jid:jid(), jid:jid(),
386 exml:element()) -> ok.
387 
:-(
 do_process_item_set(_, error, _, _, _) -> ok;
388 do_process_item_set(HostType, #jid{} = JID1, #jid{} = From, #jid{} = To,
389 #xmlel{attrs = Attrs, children = Els}) ->
390 30 MakeItem2 = fun(Item) ->
391 30 Item1 = process_item_attrs(Item, Attrs),
392 30 process_item_els(Item1, Els)
393 end,
394 30 set_roster_item(HostType, JID1, From, To, MakeItem2),
395 30 ok.
396
397 %% @doc this is run when a roster item is to be added, updated or removed
398 %% the interface of this func could probably be a bit simpler
399 -spec set_roster_item(mongooseim:host_type(),
400 ContactJID :: jid:jid(),
401 From :: jid:jid(),
402 To :: jid:jid(),
403 fun((roster()) -> roster())) -> ok | {error, any()}.
404 set_roster_item(HostType, ContactJID, From, To, MakeItem) ->
405 151 ContactLJID = jid:to_lower(ContactJID),
406 151 F = fun() -> set_roster_item_t(HostType, From, ContactLJID, MakeItem) end,
407 151 case transaction(HostType, F) of
408 {atomic, does_not_exist} ->
409 10 {error, does_not_exist};
410 {atomic, {OldItem, NewItem}} ->
411 141 push_item(HostType, From, To, NewItem),
412 141 case NewItem#roster.subscription of
413 remove ->
414 21 send_unsubscribing_presence(From, OldItem),
415 21 ok;
416 120 _ -> ok
417 end;
418 E ->
419 
:-(
 ?LOG_ERROR(#{what => roster_set_item_failed, reason => E}),
420 
:-(
 {error, E}
421 end.
422
423 -spec set_roster_item_t(mongooseim:host_type(), jid:jid(), contact(),
424 fun((roster()) -> roster())) ->
425 does_not_exist | {roster(), roster()}.
426 set_roster_item_t(HostType, UserJid = #jid{luser = LUser, lserver = LServer},
427 ContactLJID, MakeItem) ->
428 151 InitialItem = get_roster_entry_t(HostType, UserJid, ContactLJID, short),
429 151 Item1 = case InitialItem of
430 121 does_not_exist -> new_roster_item(LUser, LServer, ContactLJID);
431 30 Item -> Item
432 end,
433 151 Item2 = MakeItem(Item1),
434 151 case {InitialItem, Item2} of
435 {does_not_exist, #roster{subscription = remove}} ->
436 %% Cannot remove a non-existing item
437 10 does_not_exist;
438 _ ->
439 141 case Item2#roster.subscription of
440 21 remove -> del_roster_t(HostType, LUser, LServer, ContactLJID);
441 120 _ -> update_roster_t(HostType, Item2)
442 end,
443 141 Item3 = mongoose_hooks:roster_process_item(HostType, LServer, Item2),
444 141 case roster_version_on_db(HostType) of
445 1 true -> write_roster_version_t(HostType, LUser, LServer);
446 140 false -> ok
447 end,
448 141 {Item1, Item3}
449 end.
450
451 -spec new_roster_item(jid:luser(), jid:lserver(), jid:simple_jid()) -> roster().
452 new_roster_item(LUser, LServer, ContactLJID) ->
453 121 #roster{usj = {LUser, LServer, ContactLJID},
454 us = {LUser, LServer},
455 jid = ContactLJID}.
456
457 process_item_attrs(Item, [{<<"jid">>, Val} | Attrs]) ->
458 30 case jid:from_binary(Val) of
459 error ->
460 
:-(
 process_item_attrs(Item, Attrs);
461 JID1 ->
462 30 JID = jid:to_lower(JID1),
463 30 process_item_attrs(Item#roster{jid = JID}, Attrs)
464 end;
465 process_item_attrs(Item, [{<<"name">>, Val} | Attrs]) ->
466 28 process_item_attrs(Item#roster{name = Val}, Attrs);
467 process_item_attrs(Item, [{<<"subscription">>, <<"remove">>} | Attrs]) ->
468 2 process_item_attrs(Item#roster{subscription = remove}, Attrs);
469 process_item_attrs(Item, [_ | Attrs]) ->
470 
:-(
 process_item_attrs(Item, Attrs);
471 process_item_attrs(Item, []) ->
472 30 Item.
473
474 process_item_els(Item,
475 [#xmlel{name = Name, attrs = Attrs, children = SEls}
476 | Els]) ->
477 26 case Name of
478 <<"group">> ->
479 26 Groups = [xml:get_cdata(SEls) | Item#roster.groups],
480 26 process_item_els(Item#roster{groups = Groups}, Els);
481 _ ->
482 
:-(
 case xml:get_attr_s(<<"xmlns">>, Attrs) of
483 
:-(
 <<"">> -> process_item_els(Item, Els);
484 _ ->
485 
:-(
 XEls = [#xmlel{name = Name, attrs = Attrs,
486 children = SEls}
487 | Item#roster.xs],
488 
:-(
 process_item_els(Item#roster{xs = XEls}, Els)
489 end
490 end;
491 process_item_els(Item, [{xmlcdata, _} | Els]) ->
492 
:-(
 process_item_els(Item, Els);
493 30 process_item_els(Item, []) -> Item.
494
495 push_item(HostType, JID, From, Item) ->
496 662 broadcast_item(JID, Item#roster.jid, Item#roster.subscription),
497 662 case roster_versioning_enabled(HostType) of
498 true ->
499 2 push_item_version(JID, From, Item, roster_version(HostType, JID));
500 false ->
501 660 lists:foreach(fun(Resource) ->
502 566 push_item_without_version(HostType, JID, Resource, From, Item)
503 end,
504 ejabberd_sm:get_user_resources(JID))
505 end.
506
507 -spec broadcast_item(jid:jid(), jid:simple_jid(), subscription_state()) -> ok.
508 broadcast_item(#jid{luser = LUser, lserver = LServer}, ContactJid, Subscription) ->
509 662 Item = {item, ContactJid, Subscription},
510 662 UserPids = ejabberd_sm:get_user_present_pids(LUser, LServer),
511 662 lists:foreach(fun({_, Pid}) -> mongoose_c2s:cast(Pid, ?MODULE, Item) end, UserPids).
512
513 push_item_without_version(HostType, JID, Resource, From, Item) ->
514 566 mongoose_hooks:roster_push(HostType, From, Item),
515 566 push_item_final(jid:replace_resource(JID, Resource), From, Item, not_found).
516
517 push_item_version(JID, From, Item, RosterVersion) ->
518 2 lists:foreach(fun(Resource) ->
519 2 push_item_final(jid:replace_resource(JID, Resource),
520 From, Item, RosterVersion)
521 end, ejabberd_sm:get_user_resources(JID)).
522
523 push_item_final(JID, From, Item, RosterVersion) ->
524 568 ExtraAttrs = case RosterVersion of
525 566 not_found -> [];
526 2 _ -> [{<<"ver">>, RosterVersion}]
527 end,
528 568 ResIQ = #iq{type = set, xmlns = ?NS_ROSTER,
529 %% @doc Roster push, calculate and include the version attribute.
530 %% TODO: don't push to those who didn't load roster
531 id = <<"push", (mongoose_bin:gen_from_crypto())/binary>>,
532 sub_el =
533 [#xmlel{name = <<"query">>,
534 attrs = [{<<"xmlns">>, ?NS_ROSTER} | ExtraAttrs],
535 children = [item_to_xml(Item)]}]},
536 568 ejabberd_router:route(From, JID, jlib:iq_to_xml(ResIQ)).
537
538 -spec get_subscription_lists(Acc, Params, Extra) -> {ok, Acc} when
539 Acc :: mongoose_acc:t(),
540 Params :: #{jid := jid:jid()},
541 Extra :: gen_hook:extra().
542 get_subscription_lists(Acc, #{jid := #jid{luser = LUser, lserver = LServer} = JID}, _) ->
543 2939 Items = mod_roster_backend:get_subscription_lists(Acc, LUser, LServer),
544 2939 SubLists = fill_subscription_lists(JID, LServer, Items, [], [], []),
545 2939 {ok, mongoose_acc:set(roster, subscription_lists, SubLists, Acc)}.
546
547 fill_subscription_lists(JID, LServer, [#roster{} = I | Is], F, T, P) ->
548 11 J = element(3, I#roster.usj),
549 11 NewP = build_pending(I, JID, P),
550 11 case I#roster.subscription of
551 both ->
552 7 fill_subscription_lists(JID, LServer, Is, [J | F], [J | T], NewP);
553 from ->
554 1 fill_subscription_lists(JID, LServer, Is, [J | F], T, NewP);
555 
:-(
 to -> fill_subscription_lists(JID, LServer, Is, F, [J | T], NewP);
556 3 _ -> fill_subscription_lists(JID, LServer, Is, F, T, NewP)
557 end;
558 2939 fill_subscription_lists(_, _LServer, [], F, T, P) -> {F, T, P}.
559
560 build_pending(#roster{ask = Ask} = I, JID, P)
561 when Ask == in; Ask == both ->
562 3 Status = case I#roster.askmessage of
563 3 Message when is_binary(Message) -> Message;
564 
:-(
 true -> <<>>
565 end,
566 3 StatusEl = #xmlel{
567 name = <<"status">>,
568 children = [#xmlcdata{content = Status}]},
569 3 El = #xmlel{
570 name = <<"presence">>,
571 attrs = [{<<"from">>, jid:to_binary(I#roster.jid)},
572 {<<"to">>, jid:to_binary(JID)},
573 {<<"type">>, <<"subscribe">>}],
574 children = [StatusEl]},
575 3 [El | P];
576 build_pending(_, _, P) ->
577 8 P.
578
579 
:-(
 ask_to_pending(subscribe) -> out;
580 
:-(
 ask_to_pending(unsubscribe) -> none;
581 579 ask_to_pending(Ask) -> Ask.
582
583 -spec in_subscription(Acc, Params, Extra) -> {ok, Acc} when
584 Acc :: mongoose_acc:t(),
585 Params :: #{to := jid:jid(),
586 from := jid:jid(),
587 type := sub_presence(),
588 reason := iodata()},
589 Extra :: gen_hook:extra().
590 in_subscription(Acc,
591 #{to := ToJID, from := FromJID, type := Type, reason := Reason},
592 #{host_type := HostType}) ->
593 364 Res = process_subscription(HostType, in, ToJID, FromJID, Type, Reason),
594 364 {ok, mongoose_acc:set(hook, result, Res, Acc)}.
595
596 -spec out_subscription(Acc, Params, Extra) -> {ok, Acc} when
597 Acc :: mongoose_acc:t(),
598 Params :: #{to := jid:jid(),
599 from := jid:jid(),
600 type := sub_presence()},
601 Extra :: gen_hook:extra().
602 out_subscription(Acc,
603 #{to := ToJID, from := FromJID, type := Type},
604 #{host_type := HostType}) ->
605 250 Res = process_subscription(HostType, out, FromJID, ToJID, Type, <<>>),
606 250 {ok, mongoose_acc:set(hook, result, Res, Acc)}.
607
608 -spec process_subscription(mongooseim:host_type(), in | out, jid:jid(), jid:jid(),
609 sub_presence(), iodata()) ->
610 boolean().
611 process_subscription(HostType, Direction, JID, ContactJID, Type, Reason) ->
612 614 TransactionFun =
613 fun() ->
614 617 process_subscription_t(HostType, Direction, JID, ContactJID, Type, Reason)
615 end,
616 614 case transaction(HostType, TransactionFun) of
617 {atomic, {Push, AutoReply}} ->
618 614 case AutoReply of
619 556 none -> ok;
620 _ ->
621 58 PresenceStanza = #xmlel{name = <<"presence">>,
622 attrs = [{<<"type">>, autoreply_to_type(AutoReply)}],
623 children = []},
624 58 ejabberd_router:route(JID, ContactJID, PresenceStanza)
625 end,
626 614 case Push of
627 {push, #roster{subscription = none, ask = in}} ->
628 73 true;
629 {push, Item} ->
630 521 push_item(HostType, JID, JID, Item),
631 521 true;
632 20 none -> false
633 end;
634 
:-(
 _ -> false
635 end.
636
637 
:-(
 autoreply_to_type(subscribed) -> <<"subscribed">>;
638 58 autoreply_to_type(unsubscribed) -> <<"unsubscribed">>.
639
640 -spec process_subscription_t(mongooseim:host_type(), in | out, jid:jid(), jid:jid(),
641 sub_presence(), iodata()) ->
642 {Push :: none | {push, roster()},
643 AutoReply :: none | subscribed | unsubscribed}.
644 process_subscription_t(HostType, Direction, JID, ContactJID, Type, Reason) ->
645 617 #jid{luser = LUser, lserver = LServer} = JID,
646 617 ContactLJID = jid:to_lower(ContactJID),
647 617 Item = case get_roster_entry_t(HostType, JID, ContactLJID, full) of
648 does_not_exist ->
649 73 #roster{usj = {LUser, LServer, ContactLJID},
650 us = {LUser, LServer},
651 jid = ContactLJID};
652 544 R -> R
653 end,
654 617 NewState = case Direction of
655 out ->
656 250 out_state_change(Item#roster.subscription,
657 Item#roster.ask, Type);
658 in ->
659 367 in_state_change(Item#roster.subscription,
660 Item#roster.ask, Type)
661 end,
662 617 AutoReply = case Direction of
663 250 out -> none;
664 in ->
665 367 in_auto_reply(Item#roster.subscription,
666 Item#roster.ask, Type)
667 end,
668 617 AskMessage = case NewState of
669 92 {_, both} -> Reason;
670 121 {_, in} -> Reason;
671 404 _ -> <<"">>
672 end,
673 617 case NewState of
674 14 none -> {none, AutoReply};
675 {none, none}
676 when Item#roster.subscription == none,
677 Item#roster.ask == in ->
678 6 del_roster_t(HostType, LUser, LServer, ContactLJID), {none, AutoReply};
679 {Subscription, Pending} ->
680 597 NewItem = Item#roster{subscription = Subscription,
681 ask = Pending,
682 askmessage = iolist_to_binary(AskMessage)},
683 597 roster_subscribe_t(HostType, NewItem),
684 594 case roster_version_on_db(HostType) of
685 
:-(
 true -> write_roster_version_t(HostType, LUser, LServer);
686 594 false -> ok
687 end,
688 594 {{push, NewItem}, AutoReply}
689 end.
690
691 %% in_state_change(Subscription, Pending, Type) -> NewState
692 %% NewState = none | {NewSubscription, NewPending}
693 -ifdef(ROSTER_GATEWAY_WORKAROUND).
694
695 -define(NNSD, {to, none}).
696
697 -define(NISD, {to, in}).
698
699 -else.
700
701 -define(NNSD, none).
702
703 -define(NISD, none).
704
705 -endif.
706
707 73 in_state_change(none, none, subscribe) -> {none, in};
708 
:-(
 in_state_change(none, none, subscribed) -> ?NNSD;
709 1 in_state_change(none, none, unsubscribe) -> none;
710 10 in_state_change(none, none, unsubscribed) -> none;
711 46 in_state_change(none, out, subscribe) -> {none, both};
712 19 in_state_change(none, out, subscribed) -> {to, none};
713 
:-(
 in_state_change(none, out, unsubscribe) -> none;
714 6 in_state_change(none, out, unsubscribed) -> {none, none};
715 
:-(
 in_state_change(none, in, subscribe) -> none;
716 
:-(
 in_state_change(none, in, subscribed) -> ?NISD;
717 
:-(
 in_state_change(none, in, unsubscribe) -> {none, none};
718 
:-(
 in_state_change(none, in, unsubscribed) -> none;
719 
:-(
 in_state_change(none, both, subscribe) -> none;
720 46 in_state_change(none, both, subscribed) -> {to, in};
721 
:-(
 in_state_change(none, both, unsubscribe) -> {none, out};
722 
:-(
 in_state_change(none, both, unsubscribed) -> {none, in};
723 2 in_state_change(to, none, subscribe) -> {to, in};
724 
:-(
 in_state_change(to, none, subscribed) -> none;
725 
:-(
 in_state_change(to, none, unsubscribe) -> none;
726 54 in_state_change(to, none, unsubscribed) -> {none, none};
727 
:-(
 in_state_change(to, in, subscribe) -> none;
728 
:-(
 in_state_change(to, in, subscribed) -> none;
729 
:-(
 in_state_change(to, in, unsubscribe) -> {to, none};
730 
:-(
 in_state_change(to, in, unsubscribed) -> {none, in};
731 
:-(
 in_state_change(from, none, subscribe) -> none;
732 
:-(
 in_state_change(from, none, subscribed) -> {both, none};
733 13 in_state_change(from, none, unsubscribe) -> {none, none};
734 
:-(
 in_state_change(from, none, unsubscribed) -> none;
735 
:-(
 in_state_change(from, out, subscribe) -> none;
736 48 in_state_change(from, out, subscribed) -> {both, none};
737 
:-(
 in_state_change(from, out, unsubscribe) -> {none, out};
738 
:-(
 in_state_change(from, out, unsubscribed) -> {from, none};
739 
:-(
 in_state_change(both, none, subscribe) -> none;
740 
:-(
 in_state_change(both, none, subscribed) -> none;
741 47 in_state_change(both, none, unsubscribe) -> {to, none};
742 2 in_state_change(both, none, unsubscribed) -> {from, none}.
743
744 73 out_state_change(none, none, subscribe) -> {none, out};
745 2 out_state_change(none, none, subscribed) -> none;
746 1 out_state_change(none, none, unsubscribe) -> none;
747 
:-(
 out_state_change(none, none, unsubscribed) -> none;
748 out_state_change(none, out, subscribe) ->
749 
:-(
 {none, out}; %% We need to resend query (RFC3921, section 9.2)
750 
:-(
 out_state_change(none, out, subscribed) -> none;
751 
:-(
 out_state_change(none, out, unsubscribe) -> {none, none};
752 
:-(
 out_state_change(none, out, unsubscribed) -> none;
753 46 out_state_change(none, in, subscribe) -> {none, both};
754 19 out_state_change(none, in, subscribed) -> {from, none};
755 
:-(
 out_state_change(none, in, unsubscribe) -> none;
756 6 out_state_change(none, in, unsubscribed) -> {none, none};
757 
:-(
 out_state_change(none, both, subscribe) -> none;
758 46 out_state_change(none, both, subscribed) -> {from, out};
759 
:-(
 out_state_change(none, both, unsubscribe) -> {none, in};
760 
:-(
 out_state_change(none, both, unsubscribed) -> {none, out};
761 
:-(
 out_state_change(to, none, subscribe) -> none;
762 
:-(
 out_state_change(to, none, subscribed) -> {both, none};
763 5 out_state_change(to, none, unsubscribe) -> {none, none};
764 
:-(
 out_state_change(to, none, unsubscribed) -> none;
765 
:-(
 out_state_change(to, in, subscribe) -> none;
766 48 out_state_change(to, in, subscribed) -> {both, none};
767 
:-(
 out_state_change(to, in, unsubscribe) -> {none, in};
768 
:-(
 out_state_change(to, in, unsubscribed) -> {to, none};
769 2 out_state_change(from, none, subscribe) -> {from, out};
770 
:-(
 out_state_change(from, none, subscribed) -> none;
771 
:-(
 out_state_change(from, none, unsubscribe) -> none;
772 
:-(
 out_state_change(from, none, unsubscribed) -> {none, none};
773 
:-(
 out_state_change(from, out, subscribe) -> none;
774 
:-(
 out_state_change(from, out, subscribed) -> none;
775 
:-(
 out_state_change(from, out, unsubscribe) -> {from, none};
776 
:-(
 out_state_change(from, out, unsubscribed) -> {none, out};
777 
:-(
 out_state_change(both, none, subscribe) -> none;
778 
:-(
 out_state_change(both, none, subscribed) -> none;
779 
:-(
 out_state_change(both, none, unsubscribe) -> {from, none};
780 2 out_state_change(both, none, unsubscribed) -> {to, none}.
781
782 
:-(
 in_auto_reply(from, none, subscribe) -> subscribed;
783 
:-(
 in_auto_reply(from, out, subscribe) -> subscribed;
784 
:-(
 in_auto_reply(both, none, subscribe) -> subscribed;
785 
:-(
 in_auto_reply(none, in, unsubscribe) -> unsubscribed;
786 
:-(
 in_auto_reply(none, both, unsubscribe) -> unsubscribed;
787 
:-(
 in_auto_reply(to, in, unsubscribe) -> unsubscribed;
788 13 in_auto_reply(from, none, unsubscribe) -> unsubscribed;
789 
:-(
 in_auto_reply(from, out, unsubscribe) -> unsubscribed;
790 47 in_auto_reply(both, none, unsubscribe) -> unsubscribed;
791 307 in_auto_reply(_, _, _) -> none.
792
793 get_user_rosters_length(HostType, JID) ->
794 1 length(get_roster_old(HostType, JID)).
795
796 -spec remove_user(Acc, Params, Extra) -> {ok, Acc} when
797 Acc :: mongoose_acc:t(),
798 Params :: #{jid := jid:jid()},
799 Extra :: gen_hook:extra().
800 remove_user(Acc, #{jid := #jid{luser = LUser, lserver = LServer} = JID}, #{host_type := HostType}) ->
801 2817 Acc1 = try_send_unsubscription_to_rosteritems(Acc, JID),
802 2817 F = fun() -> mod_roster_backend:remove_user_t(HostType, LUser, LServer) end,
803 2817 case transaction(HostType, F) of
804 {atomic, ok} ->
805 2817 ok;
806 Result ->
807 
:-(
 ?LOG_ERROR(#{what => remove_user_transaction_failed, reason => Result})
808 end,
809 2817 {ok, Acc1}.
810
811 -spec try_send_unsubscription_to_rosteritems(mongoose_acc:t(), jid:jid()) ->
812 mongoose_acc:t().
813 try_send_unsubscription_to_rosteritems(Acc, JID) ->
814 2817 try
815 2817 send_unsubscription_to_rosteritems(Acc, JID)
816 catch
817 E:R:S ->
818 
:-(
 ?LOG_WARNING(#{what => roster_unsubcribe_failed,
819 
:-(
 class => E, reason => R, stacktrace => S}),
820 
:-(
 Acc
821 end.
822
823 %% For each contact with Subscription:
824 %% Both or From, send a "unsubscribed" presence stanza;
825 %% Both or To, send a "unsubscribe" presence stanza.
826 -spec send_unsubscription_to_rosteritems(mongoose_acc:t(), jid:jid()) -> mongoose_acc:t().
827 send_unsubscription_to_rosteritems(Acc, JID) ->
828 2817 #jid{luser = LUser, lserver = LServer} = JID,
829 2817 Acc1 = get_user_roster(Acc, LUser, LServer, mongoose_acc:host_type(Acc)),
830 2817 RosterItems = mongoose_acc:get(roster, items, [], Acc1),
831 2817 lists:foreach(fun(RosterItem) ->
832 146 send_unsubscribing_presence(JID, RosterItem)
833 end, RosterItems),
834 2817 Acc1.
835
836 -spec send_unsubscribing_presence(From :: jid:jid(), Item :: roster()) -> ok | mongoose_acc:t().
837 send_unsubscribing_presence(From, #roster{ subscription = Subscription } = Item) ->
838 167 BareFrom = jid:to_bare(From),
839 167 ContactJID = jid:make_noprep(Item#roster.jid),
840 167 IsTo = Subscription == both orelse Subscription == to,
841 167 IsFrom = Subscription == both orelse Subscription == from,
842 167 case IsTo of
843 53 true -> send_presence_type(BareFrom, ContactJID, <<"unsubscribe">>);
844 114 _ -> ok
845 end,
846 167 case IsFrom of
847 53 true -> send_presence_type(BareFrom, ContactJID, <<"unsubscribed">>);
848 114 _ -> ok
849 end.
850
851 send_presence_type(From, To, Type) ->
852 106 ejabberd_router:route(From, To,
853 #xmlel{name = <<"presence">>,
854 attrs = [{<<"type">>, Type}], children = []}).
855
856 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
857
858 -spec remove_domain(Acc, Params, Extra) -> {ok , Acc} when
859 Acc :: mongoose_domain_api:remove_domain_acc(),
860 Params :: #{domain := jid:lserver()},
861 Extra :: gen_hook:extra().
862 remove_domain(Acc, #{domain := Domain}, #{host_type := HostType}) ->
863 
:-(
 case mongoose_lib:is_exported(mod_roster_backend, remove_domain_t, 2) of
864 true ->
865 
:-(
 F = fun() -> mod_roster_backend:remove_domain_t(HostType, Domain) end,
866 
:-(
 case transaction(HostType, F) of
867 {atomic, ok} ->
868 
:-(
 ok;
869 Result ->
870 
:-(
 ?LOG_ERROR(#{what => remove_domain_transaction_failed,
871 
:-(
 reason => Result})
872 end;
873 false ->
874 
:-(
 ok
875 end,
876 
:-(
 {ok, Acc}.
877
878 -spec set_items(mongooseim:host_type(), jid:jid(), exml:element()) -> ok | {error, any()}.
879 set_items(HostType, #jid{luser = LUser, lserver = LServer}, SubEl) ->
880 
:-(
 F = fun() -> set_items_t(HostType, LUser, LServer, SubEl) end,
881 
:-(
 case transaction(HostType, F) of
882 {atomic, _} ->
883 
:-(
 ok;
884 Result ->
885 
:-(
 {error, Result}
886 end.
887
888 set_items_t(HostType, LUser, LServer, #xmlel{children = Els}) ->
889 
:-(
 lists:foreach(fun(El) ->
890 
:-(
 process_item_set_t(HostType, LUser, LServer, El)
891 end, Els).
892
893 %% @doc add a contact to roster, or update
894 -spec set_roster_entry(mongooseim:host_type(), jid:jid(), jid:jid(), binary(), [binary()]) ->
895 ok | {error, any()}.
896 set_roster_entry(HostType, UserJid, ContactJid, Name, Groups) ->
897 92 UpdateF = fun(Item) -> Item#roster{name = Name, groups = Groups} end,
898 92 set_roster_item(HostType, ContactJid, UserJid, UserJid, UpdateF).
899
900 %% @doc remove from roster - in practice it means changing subscription state to 'remove'
901 -spec remove_from_roster(mongooseim:host_type(), UserJid :: jid:jid(), ContactJid :: jid:jid()) ->
902 ok | {error, any()}.
903 remove_from_roster(HostType, UserJid, ContactJid) ->
904 29 UpdateF = fun(Item) -> Item#roster{subscription = remove} end,
905 29 set_roster_item(HostType, ContactJid, UserJid, UserJid, UpdateF).
906
907 process_item_set_t(HostType, LUser, LServer,
908 #xmlel{attrs = Attrs, children = Els}) ->
909 
:-(
 JID1 = jid:from_binary(xml:get_attr_s(<<"jid">>, Attrs)),
910 
:-(
 case JID1 of
911 
:-(
 error -> ok;
912 _ ->
913 
:-(
 LJID = {JID1#jid.luser, JID1#jid.lserver, JID1#jid.lresource},
914 
:-(
 Item = #roster{usj = {LUser, LServer, LJID},
915 us = {LUser, LServer}, jid = LJID},
916 
:-(
 Item1 = process_item_attrs_ws(Item, Attrs),
917 
:-(
 Item2 = process_item_els(Item1, Els),
918 
:-(
 case Item2#roster.subscription of
919 
:-(
 remove -> del_roster_t(HostType, LUser, LServer, LJID);
920 
:-(
 _ -> update_roster_t(HostType, Item2)
921 end
922 end;
923 
:-(
 process_item_set_t(_HostType, _LUser, _LServer, _) -> ok.
924
925 process_item_attrs_ws(Item, [{<<"jid">>, Val} | Attrs]) ->
926 
:-(
 case jid:from_binary(Val) of
927 error ->
928 
:-(
 process_item_attrs_ws(Item, Attrs);
929 JID1 ->
930 
:-(
 JID = {JID1#jid.luser, JID1#jid.lserver, JID1#jid.lresource},
931 
:-(
 process_item_attrs_ws(Item#roster{jid = JID}, Attrs)
932 end;
933 process_item_attrs_ws(Item, [{<<"name">>, Val} | Attrs]) ->
934 
:-(
 process_item_attrs_ws(Item#roster{name = Val}, Attrs);
935 process_item_attrs_ws(Item, [{<<"subscription">>, <<"remove">>} | Attrs]) ->
936 
:-(
 process_item_attrs_ws(Item#roster{subscription = remove}, Attrs);
937 process_item_attrs_ws(Item, [{<<"subscription">>, <<"none">>} | Attrs]) ->
938 
:-(
 process_item_attrs_ws(Item#roster{subscription = none}, Attrs);
939 process_item_attrs_ws(Item, [{<<"subscription">>, <<"both">>} | Attrs]) ->
940 
:-(
 process_item_attrs_ws(Item#roster{subscription = both}, Attrs);
941 process_item_attrs_ws(Item, [{<<"subscription">>, <<"from">>} | Attrs]) ->
942 
:-(
 process_item_attrs_ws(Item#roster{subscription = from}, Attrs);
943 process_item_attrs_ws(Item, [{<<"subscription">>, <<"to">>} | Attrs]) ->
944 
:-(
 process_item_attrs_ws(Item#roster{subscription = to}, Attrs);
945 process_item_attrs_ws(Item, [_ | Attrs]) ->
946 
:-(
 process_item_attrs_ws(Item, Attrs);
947 process_item_attrs_ws(Item, []) ->
948 
:-(
 Item.
949
950 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
951
952 -spec get_jid_info(Acc, Params, Extra) -> {ok, Acc} when
953 Acc :: {subscription_state(), [binary()]},
954 Params :: #{to := jid:jid(), remote := jid:jid() | jid:simple_jid()},
955 Extra :: gen_hook:extra().
956 get_jid_info(_, #{to := ToJID, remote := JID}, #{host_type := HostType}) ->
957 57 ToRosterEntry = get_roster_entry(HostType, ToJID, JID, full),
958 57 RemoteRosterEntryGetter = fun() -> get_roster_entry(HostType, ToJID, jid:to_bare(jid:to_lower(JID)), full) end,
959 57 NewAcc = determine_subscription_state(ToRosterEntry, RemoteRosterEntryGetter),
960 57 {ok, NewAcc}.
961
962 -spec determine_subscription_state(RosterEntry, RosterEntryGetter) -> SubscriptionState when
963 RosterEntry :: roster() | does_not_exist | error,
964 RosterEntryGetter :: fun(() -> RosterEntry) | undefined,
965 SubscriptionState :: {subscription_state(), [binary()]}.
966 
:-(
 determine_subscription_state(error, _) -> {none, []};
967 25 determine_subscription_state(does_not_exist, undefined) -> {none, []};
968 47 determine_subscription_state(does_not_exist, Getter) -> determine_subscription_state(Getter(), undefined);
969 32 determine_subscription_state(R, _) -> {R#roster.subscription, R#roster.groups}.
970
971 get_roster_old(HostType, #jid{lserver = LServer} = JID) ->
972 2 get_roster_old(HostType, LServer, JID).
973
974 get_roster_old(HostType, DestServer, JID) ->
975 26 A = mongoose_acc:new(#{ location => ?LOCATION,
976 lserver => DestServer,
977 host_type => HostType,
978 element => undefined }),
979 26 A2 = mongoose_hooks:roster_get(A, JID),
980 26 mongoose_acc:get(roster, items, [], A2).
981
982 -spec item_to_map(roster()) -> map().
983 item_to_map(#roster{} = Roster) ->
984 19 ContactJid = jid:make_noprep(jid:to_bare(Roster#roster.jid)),
985 19 ContactName = Roster#roster.name,
986 19 Subs = Roster#roster.subscription,
987 19 Groups = Roster#roster.groups,
988 19 Ask = Roster#roster.ask,
989 19 #{jid => ContactJid, name => ContactName, subscription => Subs,
990 groups => Groups, ask => Ask}.
991
992 -spec config_metrics(mongooseim:host_type()) -> [{gen_mod:opt_key(), gen_mod:opt_value()}].
993 config_metrics(HostType) ->
994 225 mongoose_module_metrics:opts_for_module(HostType, ?MODULE, [backend]).
995
996 %% Backend API wrappers
997
998 -spec transaction(mongooseim:host_type(), fun(() -> any())) ->
999 {aborted, any()} | {atomic, any()} | {error, any()}.
1000 transaction(HostType, F) ->
1001 3582 mod_roster_backend:transaction(HostType, F).
1002
1003 -spec read_roster_version(mongooseim:host_type(), jid:luser(), jid:lserver()) ->
1004 binary() | error.
1005 read_roster_version(HostType, LUser, LServer) ->
1006 4 mod_roster_backend:read_roster_version(HostType, LUser, LServer).
1007
1008 -spec write_roster_version(mongooseim:host_type(), jid:luser(), jid:lserver()) -> version().
1009 write_roster_version(HostType, LUser, LServer) ->
1010 1 write_roster_version(HostType, LUser, LServer, no_transaction).
1011
1012 -spec write_roster_version_t(mongooseim:host_type(), jid:luser(), jid:lserver()) -> version().
1013 write_roster_version_t(HostType, LUser, LServer) ->
1014 1 write_roster_version(HostType, LUser, LServer, in_transaction).
1015
1016 -spec write_roster_version(mongooseim:host_type(), jid:luser(), jid:lserver(),
1017 transaction_state()) -> version().
1018 write_roster_version(HostType, LUser, LServer, TransactionState) ->
1019 2 Ver = mongoose_bin:encode_crypto(term_to_binary(os:timestamp())),
1020 2 mod_roster_backend:write_roster_version(HostType, LUser, LServer, TransactionState, Ver),
1021 2 Ver.
1022
1023 -spec get_roster(mongooseim:host_type(), jid:luser(), jid:lserver()) -> [roster()].
1024 get_roster(HostType, LUser, LServer) ->
1025 2996 mod_roster_backend:get_roster(HostType, LUser, LServer).
1026
1027 -spec get_roster_entry(mongooseim:host_type(), jid:jid(), contact(), entry_format()) ->
1028 roster() | does_not_exist | error.
1029 get_roster_entry(HostType, #jid{luser = LUser, lserver = LServer}, LJid, Format) ->
1030 142 mod_roster_backend:get_roster_entry(HostType, LUser, LServer, LJid, no_transaction, Format).
1031
1032 -spec get_roster_entry_t(mongooseim:host_type(), jid:jid(), contact(), entry_format()) ->
1033 roster() | does_not_exist | error.
1034 get_roster_entry_t(HostType, #jid{luser = LUser, lserver = LServer}, LJid, Format) ->
1035 768 mod_roster_backend:get_roster_entry(HostType, LUser, LServer, LJid, in_transaction, Format).
1036
1037 -spec roster_subscribe_t(mongooseim:host_type(), roster()) -> ok.
1038 roster_subscribe_t(HostType, Item) ->
1039 597 mod_roster_backend:roster_subscribe_t(HostType, Item).
1040
1041 -spec update_roster_t(mongooseim:host_type(), roster()) -> ok.
1042 update_roster_t(HostType, Item) ->
1043 120 mod_roster_backend:update_roster_t(HostType, Item).
1044
1045 -spec del_roster_t(mongooseim:host_type(), jid:luser(), jid:lserver(), contact()) -> ok.
1046 del_roster_t(HostType, LUser, LServer, LJID) ->
1047 27 mod_roster_backend:del_roster_t(HostType, LUser, LServer, LJID).
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