2 -- Copyright (C) 2008-2010 Matthew Wild
3 -- Copyright (C) 2008-2010 Waqas Hussain
4 -- Copyright (C) 2014 Daurnimator
6 -- This project is MIT/X11 licensed. Please see the
7 -- COPYING file in the source package for more information.
10 local select = select;
13 local setmetatable = setmetatable;
15 local dataform = require "util.dataforms";
16 local iterators = require "util.iterators";
17 local jid_split = require "util.jid".split;
18 local jid_bare = require "util.jid".bare;
19 local jid_prep = require "util.jid".prep;
20 local jid_join = require "util.jid".join;
21 local st = require "util.stanza";
22 local base64 = require "util.encodings".base64;
23 local md5 = require "util.hashes".md5;
25 local log = module._log;
27 local occupant_lib = module:require "muc/occupant"
28 local muc_util = module:require "muc/util";
29 local is_kickable_error = muc_util.is_kickable_error;
30 local valid_roles, valid_affiliations = muc_util.valid_roles, muc_util.valid_affiliations;
33 room_mt.__index = room_mt;
35 function room_mt:__tostring()
36 return "MUC room ("..self.jid..")";
39 function room_mt.save()
40 -- overriden by mod_muc.lua
43 function room_mt:get_occupant_jid(real_jid)
44 return self._jid_nick[real_jid]
47 function room_mt:get_default_role(affiliation)
48 local role = module:fire_event("muc-get-default-role", {
50 affiliation = affiliation;
51 affiliation_rank = valid_affiliations[affiliation or "none"];
53 return role, valid_roles[role or "none"];
55 module:hook("muc-get-default-role", function(event)
56 if event.affiliation_rank >= valid_affiliations.admin then
58 elseif event.affiliation_rank >= valid_affiliations.none then
63 --- Occupant functions
64 function room_mt:new_occupant(bare_real_jid, nick)
65 local occupant = occupant_lib.new(bare_real_jid, nick);
66 local affiliation = self:get_affiliation(bare_real_jid);
67 occupant.role = self:get_default_role(affiliation);
71 function room_mt:get_occupant_by_nick(nick)
72 local occupant = self._occupants[nick];
73 if occupant == nil then return nil end
74 return occupant_lib.copy(occupant);
78 local function next_copied_occupant(occupants, occupant_jid)
79 local next_occupant_jid, raw_occupant = next(occupants, occupant_jid);
80 if next_occupant_jid == nil then return nil end
81 return next_occupant_jid, occupant_lib.copy(raw_occupant);
83 -- FIXME Explain what 'read_only' is supposed to be
84 function room_mt:each_occupant(read_only) -- luacheck: ignore 212
85 return next_copied_occupant, self._occupants, nil;
89 function room_mt:has_occupant()
90 return next(self._occupants, nil) ~= nil
93 function room_mt:get_occupant_by_real_jid(real_jid)
94 local occupant_jid = self:get_occupant_jid(real_jid);
95 if occupant_jid == nil then return nil end
96 return self:get_occupant_by_nick(occupant_jid);
99 function room_mt:save_occupant(occupant)
100 occupant = occupant_lib.copy(occupant); -- So that occupant can be modified more
101 local id = occupant.nick
103 -- Need to maintain _jid_nick secondary index
104 local old_occupant = self._occupants[id];
106 for real_jid in old_occupant:each_session() do
107 self._jid_nick[real_jid] = nil;
111 local has_live_session = false
112 if occupant.role ~= nil then
113 for real_jid, presence in occupant:each_session() do
114 if presence.attr.type == nil then
115 has_live_session = true
116 self._jid_nick[real_jid] = occupant.nick;
119 if not has_live_session then
120 -- Has no live sessions left; they have left the room.
124 if not has_live_session then
127 self._occupants[id] = occupant
130 function room_mt:route_to_occupant(occupant, stanza)
131 local to = stanza.attr.to;
132 for jid in occupant:each_session() do
133 stanza.attr.to = jid;
134 self:route_stanza(stanza);
139 -- actor is the attribute table
140 local function add_item(x, affiliation, role, jid, nick, actor_nick, actor_jid, reason)
141 x:tag("item", {affiliation = affiliation; role = role; jid = jid; nick = nick;})
142 if actor_nick or actor_jid then
143 x:tag("actor", {nick = actor_nick; jid = actor_jid;}):up()
146 x:tag("reason"):text(reason):up()
152 -- actor is (real) jid
153 function room_mt:build_item_list(occupant, x, is_anonymous, nick, actor_nick, actor_jid, reason)
154 local affiliation = self:get_affiliation(occupant.bare_jid) or "none";
155 local role = occupant.role or "none";
157 add_item(x, affiliation, role, nil, nick, actor_nick, actor_jid, reason);
159 for real_jid in occupant:each_session() do
160 add_item(x, affiliation, role, real_jid, nick, actor_nick, actor_jid, reason);
166 function room_mt:broadcast_message(stanza)
167 if module:fire_event("muc-broadcast-message", {room = self, stanza = stanza}) then
170 self:broadcast(stanza);
174 -- Broadcast a stanza to all occupants in the room.
175 -- optionally checks conditional called with (nick, occupant)
176 function room_mt:broadcast(stanza, cond_func)
177 for nick, occupant in self:each_occupant() do
178 if cond_func == nil or cond_func(nick, occupant) then
179 self:route_to_occupant(occupant, stanza)
184 local function can_see_real_jids(whois, occupant)
185 if whois == "anyone" then
187 elseif whois == "moderators" then
188 return valid_roles[occupant.role or "none"] >= valid_roles.moderator;
192 -- Broadcasts an occupant's presence to the whole room
193 -- Takes the x element that goes into the stanzas
194 function room_mt:publicise_occupant_status(occupant, base_x, nick, actor, reason)
195 -- Build real jid and (optionally) occupant jid template presences
196 local base_presence do
197 -- Try to use main jid's presence
198 local pr = occupant:get_presence();
199 if pr and (pr.attr.type ~= "unavailable" and occupant.role ~= nil) then
200 base_presence = st.clone(pr);
201 else -- user is leaving but didn't send a leave presence. make one for them
202 base_presence = st.presence {from = occupant.nick; type = "unavailable";};
206 -- Fire event (before full_p and anon_p are created)
208 room = self; stanza = base_presence; x = base_x;
209 occupant = occupant; nick = nick; actor = actor;
212 module:fire_event("muc-broadcast-presence", event);
214 -- Allow muc-broadcast-presence listeners to change things
217 reason = event.reason;
219 local whois = self:get_whois();
223 actor_nick = select(3, jid_split(self:get_occupant_jid(actor)));
226 local full_p, full_x;
227 local function get_full_p()
228 if full_p == nil then
229 full_x = st.clone(base_x);
230 self:build_item_list(occupant, full_x, false, nick, actor_nick, actor, reason);
231 full_p = st.clone(base_presence):add_child(full_x);
233 return full_p, full_x;
236 local anon_p, anon_x;
237 local function get_anon_p()
238 if anon_p == nil then
239 anon_x = st.clone(base_x);
240 self:build_item_list(occupant, anon_x, true, nick, actor_nick, nil, reason);
241 anon_p = st.clone(base_presence):add_child(anon_x);
243 return anon_p, anon_x;
246 local self_p, self_x;
247 if can_see_real_jids(whois, occupant) then
248 self_p, self_x = get_full_p();
250 -- Can always see your own full jids
251 -- But not allowed to see actor's
252 self_x = st.clone(base_x);
253 self:build_item_list(occupant, self_x, false, nick, actor_nick, nil, reason);
254 self_p = st.clone(base_presence):add_child(self_x);
258 for occupant_nick, n_occupant in self:each_occupant() do
259 if occupant_nick ~= occupant.nick then
261 if can_see_real_jids(whois, n_occupant) then
263 elseif occupant.bare_jid == n_occupant.bare_jid then
268 self:route_to_occupant(n_occupant, pr);
272 -- Presences for occupant itself
273 self_x:tag("status", {code = "110";}):up();
274 if occupant.role == nil then
275 -- They get an unavailable
276 self:route_to_occupant(occupant, self_p);
278 -- use their own presences as templates
279 for full_jid, pr in occupant:each_session() do
281 pr.attr.to = full_jid;
282 pr:add_child(self_x);
283 self:route_stanza(pr);
288 function room_mt:send_occupant_list(to, filter)
289 local to_bare = jid_bare(to);
290 local is_anonymous = false;
291 local whois = self:get_whois();
292 if whois ~= "anyone" then
293 local affiliation = self:get_affiliation(to);
294 if affiliation ~= "admin" and affiliation ~= "owner" then
295 local occupant = self:get_occupant_by_real_jid(to);
296 if not (occupant and can_see_real_jids(whois, occupant)) then
301 for occupant_jid, occupant in self:each_occupant() do
302 if filter == nil or filter(occupant_jid, occupant) then
303 local x = st.stanza("x", {xmlns='http://jabber.org/protocol/muc#user'});
304 self:build_item_list(occupant, x, is_anonymous and to_bare ~= occupant.bare_jid); -- can always see your own jids
305 local pres = st.clone(occupant:get_presence());
308 self:route_stanza(pres);
313 function room_mt:get_disco_info(stanza)
314 local reply = st.reply(stanza):query("http://jabber.org/protocol/disco#info");
315 local form = dataform.new {
316 { name = "FORM_TYPE", type = "hidden", value = "http://jabber.org/protocol/muc#roominfo" };
319 module:fire_event("muc-disco#info", {room = self; reply = reply; form = form, formdata = formdata ;});
320 reply:add_child(form:form(formdata, "result"));
323 module:hook("muc-disco#info", function(event)
324 event.reply:tag("feature", {var = "http://jabber.org/protocol/muc"}):up();
326 module:hook("muc-disco#info", function(event)
327 table.insert(event.form, { name = "muc#roominfo_occupants", label = "Number of occupants" });
328 event.formdata["muc#roominfo_occupants"] = tostring(iterators.count(event.room:each_occupant()));
331 function room_mt:get_disco_items(stanza)
332 local reply = st.reply(stanza):query("http://jabber.org/protocol/disco#items");
333 for room_jid in self:each_occupant() do
334 reply:tag("item", {jid = room_jid, name = room_jid:match("/(.*)")}):up();
339 function room_mt:handle_kickable(origin, stanza) -- luacheck: ignore 212
340 local real_jid = stanza.attr.from;
341 local occupant = self:get_occupant_by_real_jid(real_jid);
342 if occupant == nil then return nil; end
343 local type, condition, text = stanza:get_error();
344 local error_message = "Kicked: "..(condition and condition:gsub("%-", " ") or "presence error");
346 error_message = error_message..": "..text;
348 occupant:set_session(real_jid, st.presence({type="unavailable"})
349 :tag('status'):text(error_message));
350 self:save_occupant(occupant);
351 local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";})
352 :tag("status", {code = "307"})
353 self:publicise_occupant_status(occupant, x);
354 if occupant.jid == real_jid then -- Was last session
355 module:fire_event("muc-occupant-left", {room = self; nick = occupant.nick; occupant = occupant;});
360 if not module:get_option_boolean("muc_compat_create", true) then
361 module:hook("muc-room-pre-create", function(event)
362 local origin, stanza = event.origin, event.stanza;
363 if not stanza:get_child("x", "http://jabber.org/protocol/muc") then
364 origin.send(st.error_reply(stanza, "cancel", "item-not-found"));
370 -- Give the room creator owner affiliation
371 module:hook("muc-room-pre-create", function(event)
372 event.room:set_affiliation(true, jid_bare(event.stanza.attr.from), "owner");
375 -- check if user is banned
376 module:hook("muc-occupant-pre-join", function(event)
377 local room, stanza = event.room, event.stanza;
378 local affiliation = room:get_affiliation(stanza.attr.from);
379 if affiliation == "outcast" then
380 local reply = st.error_reply(stanza, "auth", "forbidden"):up();
381 reply.tags[1].attr.code = "403";
382 event.origin.send(reply:tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
387 function room_mt:handle_normal_presence(origin, stanza)
388 local type = stanza.attr.type;
389 local real_jid = stanza.attr.from;
390 local bare_jid = jid_bare(real_jid);
391 local orig_occupant, dest_occupant;
392 local is_new_room = next(self._affiliations) == nil;
394 if type == "unavailable" then return true; end -- Unavailable from someone not in the room
395 if module:fire_event("muc-room-pre-create", {
399 }) then return true; end
401 orig_occupant = self:get_occupant_by_real_jid(real_jid);
402 if type == "unavailable" and orig_occupant == nil then return true; end -- Unavailable from someone not in the room
404 local is_first_dest_session;
405 if type == "unavailable" then -- luacheck: ignore 542
406 -- FIXME Why the empty if branch?
407 -- dest_occupant = nil
408 elseif orig_occupant and orig_occupant.nick == stanza.attr.to then -- Just a presence update
409 log("debug", "presence update for %s from session %s", orig_occupant.nick, real_jid);
410 dest_occupant = orig_occupant;
412 local dest_jid = stanza.attr.to;
413 dest_occupant = self:get_occupant_by_nick(dest_jid);
414 if dest_occupant == nil then
415 log("debug", "no occupant found for %s; creating new occupant object for %s", dest_jid, real_jid);
416 is_first_dest_session = true;
417 dest_occupant = self:new_occupant(bare_jid, dest_jid);
419 is_first_dest_session = false;
422 local is_last_orig_session;
423 if orig_occupant ~= nil then
424 -- Is there are least 2 sessions?
425 local iter, ob, last = orig_occupant:each_session();
426 is_last_orig_session = iter(ob, iter(ob, last)) == nil;
429 -- TODO Handle these cases sensibly
430 local muc_x = stanza:get_child("x", "http://jabber.org/protocol/muc");
431 if orig_occupant == nil and not muc_x then
432 module:log("debug", "Join without <x>, possibly desynced");
433 elseif orig_occupant ~= nil and muc_x then
434 module:log("debug", "Presence update with <x>, possibly desynced");
437 local event, event_name = {
441 is_first_session = is_first_dest_session;
442 is_last_session = is_last_orig_session;
444 if orig_occupant == nil then
445 event_name = "muc-occupant-pre-join";
446 event.is_new_room = is_new_room;
447 event.occupant = dest_occupant;
448 elseif dest_occupant == nil then
449 event_name = "muc-occupant-pre-leave";
450 event.occupant = orig_occupant;
452 event_name = "muc-occupant-pre-change";
453 event.orig_occupant = orig_occupant;
454 event.dest_occupant = dest_occupant;
456 if module:fire_event(event_name, event) then return true; end
458 -- Check for nick conflicts
459 if dest_occupant ~= nil and not is_first_dest_session and bare_jid ~= jid_bare(dest_occupant.bare_jid) then -- new nick or has different bare real jid
460 log("debug", "%s couldn't join due to nick conflict: %s", real_jid, dest_occupant.nick);
461 local reply = st.error_reply(stanza, "cancel", "conflict"):up();
462 reply.tags[1].attr.code = "409";
463 origin.send(reply:tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
467 -- Send presence stanza about original occupant
468 if orig_occupant ~= nil and orig_occupant ~= dest_occupant then
469 local orig_x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";});
471 if dest_occupant == nil then -- Session is leaving
472 log("debug", "session %s is leaving occupant %s", real_jid, orig_occupant.nick);
473 if is_last_orig_session then
474 orig_occupant.role = nil;
476 orig_occupant:set_session(real_jid, stanza);
478 log("debug", "session %s is changing from occupant %s to %s", real_jid, orig_occupant.nick, dest_occupant.nick);
479 local generated_unavail = st.presence {from = orig_occupant.nick, to = real_jid, type = "unavailable"};
480 orig_occupant:set_session(real_jid, generated_unavail);
481 dest_nick = select(3, jid_split(dest_occupant.nick));
482 if not is_first_dest_session then -- User is swapping into another pre-existing session
483 log("debug", "session %s is swapping into multisession %s, showing it leave.", real_jid, dest_occupant.nick);
484 -- Show the other session leaving
485 local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";})
486 :tag("status"):text("you are joining pre-existing session " .. dest_nick):up();
487 add_item(x, self:get_affiliation(bare_jid), "none");
488 local pr = st.presence{from = dest_occupant.nick, to = real_jid, type = "unavailable"}
490 self:route_stanza(pr);
492 if is_first_dest_session and is_last_orig_session then -- Normal nick change
493 log("debug", "no sessions in %s left; publically marking as nick change", orig_occupant.nick);
494 orig_x:tag("status", {code = "303";}):up();
495 else -- The session itself always needs to see a nick change
496 -- don't want to get our old nick's available presence,
497 -- so remove our session from there, and manually generate an unavailable
498 orig_occupant:remove_session(real_jid);
499 log("debug", "generating nick change for %s", real_jid);
500 local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";});
501 -- self:build_item_list(orig_occupant, x, false, dest_nick); -- COMPAT: clients get confused if they see other items besides their own
502 add_item(x, self:get_affiliation(bare_jid), orig_occupant.role, real_jid, dest_nick);
503 x:tag("status", {code = "303";}):up();
504 x:tag("status", {code = "110";}):up();
505 self:route_stanza(generated_unavail:add_child(x));
506 dest_nick = nil; -- set dest_nick to nil; so general populance doesn't see it for whole orig_occupant
509 self:save_occupant(orig_occupant);
510 self:publicise_occupant_status(orig_occupant, orig_x, dest_nick);
512 if is_last_orig_session then
513 module:fire_event("muc-occupant-left", {
515 nick = orig_occupant.nick;
516 occupant = orig_occupant;
523 if dest_occupant ~= nil then
524 dest_occupant:set_session(real_jid, stanza);
525 local dest_x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";});
527 dest_x:tag("status", {code = "201"}):up();
529 if orig_occupant == nil and self:get_whois() == "anyone" then
530 dest_x:tag("status", {code = "100"}):up();
532 self:save_occupant(dest_occupant);
534 if orig_occupant == nil then
535 -- Send occupant list to newly joined user
536 self:send_occupant_list(real_jid, function(nick, occupant) -- luacheck: ignore 212
537 -- Don't include self
538 return occupant:get_presence(real_jid) == nil;
541 self:publicise_occupant_status(dest_occupant, dest_x);
543 if orig_occupant ~= nil and orig_occupant ~= dest_occupant and not is_last_orig_session then -- If user is swapping and wasn't last original session
544 log("debug", "session %s split nicks; showing %s rejoining", real_jid, orig_occupant.nick);
545 -- Show the original nick joining again
546 local pr = st.clone(orig_occupant:get_presence());
547 pr.attr.to = real_jid;
548 local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";});
549 self:build_item_list(orig_occupant, x, false);
550 -- TODO: new status code to inform client this was the multi-session it left?
552 self:route_stanza(pr);
555 if orig_occupant == nil then
556 if is_first_dest_session then
557 module:fire_event("muc-occupant-joined", {
559 nick = dest_occupant.nick;
560 occupant = dest_occupant;
565 module:fire_event("muc-occupant-session-new", {
567 nick = dest_occupant.nick;
568 occupant = dest_occupant;
578 function room_mt:handle_presence_to_occupant(origin, stanza)
579 local type = stanza.attr.type;
580 if type == "error" then -- error, kick em out!
581 return self:handle_kickable(origin, stanza)
582 elseif type == nil or type == "unavailable" then
583 return self:handle_normal_presence(origin, stanza);
584 elseif type ~= 'result' then -- bad type
585 if type ~= 'visible' and type ~= 'invisible' then -- COMPAT ejabberd can broadcast or forward XEP-0018 presences
586 origin.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME correct error?
592 function room_mt:handle_iq_to_occupant(origin, stanza)
593 local from, to = stanza.attr.from, stanza.attr.to;
594 local type = stanza.attr.type;
595 local id = stanza.attr.id;
596 local occupant = self:get_occupant_by_nick(to);
597 if (type == "error" or type == "result") then
598 do -- deconstruct_stanza_id
599 if not occupant then return nil; end
600 local from_jid, orig_id, to_jid_hash = (base64.decode(id) or ""):match("^(%Z+)%z(%Z*)%z(.+)$");
601 if not(from == from_jid or from == jid_bare(from_jid)) then return nil; end
602 local from_occupant_jid = self:get_occupant_jid(from_jid);
603 if from_occupant_jid == nil then return nil; end
605 for to_jid in occupant:each_session() do
606 if md5(to_jid) == to_jid_hash then
607 session_jid = to_jid;
611 if session_jid == nil then return nil; end
612 stanza.attr.from, stanza.attr.to, stanza.attr.id = from_occupant_jid, session_jid, orig_id;
614 log("debug", "%s sent private iq stanza to %s (%s)", from, to, stanza.attr.to);
615 self:route_stanza(stanza);
616 stanza.attr.from, stanza.attr.to, stanza.attr.id = from, to, id;
618 else -- Type is "get" or "set"
619 local current_nick = self:get_occupant_jid(from);
620 if not current_nick then
621 origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
624 if not occupant then -- recipient not in room
625 origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Recipient not in room"));
628 do -- construct_stanza_id
629 stanza.attr.id = base64.encode(occupant.jid.."\0"..stanza.attr.id.."\0"..md5(from));
631 stanza.attr.from, stanza.attr.to = current_nick, occupant.jid;
632 log("debug", "%s sent private iq stanza to %s (%s)", from, to, occupant.jid);
633 if stanza.tags[1].attr.xmlns == 'vcard-temp' then
634 stanza.attr.to = jid_bare(stanza.attr.to);
636 self:route_stanza(stanza);
637 stanza.attr.from, stanza.attr.to, stanza.attr.id = from, to, id;
642 function room_mt:handle_message_to_occupant(origin, stanza)
643 local from, to = stanza.attr.from, stanza.attr.to;
644 local current_nick = self:get_occupant_jid(from);
645 local type = stanza.attr.type;
646 if not current_nick then -- not in room
647 if type ~= "error" then
648 origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
652 if type == "groupchat" then -- groupchat messages not allowed in PM
653 origin.send(st.error_reply(stanza, "modify", "bad-request"));
655 elseif type == "error" and is_kickable_error(stanza) then
656 log("debug", "%s kicked from %s for sending an error message", current_nick, self.jid);
657 return self:handle_kickable(origin, stanza); -- send unavailable
660 local o_data = self:get_occupant_by_nick(to);
662 origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Recipient not in room"));
665 log("debug", "%s sent private message stanza to %s (%s)", from, to, o_data.jid);
666 stanza:tag("x", { xmlns = "http://jabber.org/protocol/muc#user" }):up();
667 stanza.attr.from = current_nick;
668 self:route_to_occupant(o_data, stanza)
669 -- TODO: Remove x tag?
670 stanza.attr.from = from;
674 function room_mt:send_form(origin, stanza)
675 origin.send(st.reply(stanza):query("http://jabber.org/protocol/muc#owner")
676 :add_child(self:get_form_layout(stanza.attr.from):form())
680 function room_mt:get_form_layout(actor)
681 local form = dataform.new({
682 title = "Configuration for "..self.jid,
683 instructions = "Complete and submit this form to configure the room.",
687 value = 'http://jabber.org/protocol/muc#roomconfig'
690 return module:fire_event("muc-config-form", { room = self, actor = actor, form = form }) or form;
693 function room_mt:process_form(origin, stanza)
694 local form = stanza.tags[1]:get_child("x", "jabber:x:data");
695 if form.attr.type == "cancel" then
696 origin.send(st.reply(stanza));
697 elseif form.attr.type == "submit" then
698 local fields, errors, present;
699 if form.tags[1] == nil then -- Instant room
700 fields, present = {}, {};
702 fields, errors, present = self:get_form_layout(stanza.attr.from):data(form);
703 if fields.FORM_TYPE ~= "http://jabber.org/protocol/muc#roomconfig" then
704 origin.send(st.error_reply(stanza, "cancel", "bad-request", "Form is not of type room configuration"));
709 local event = {room = self; origin = origin; stanza = stanza; fields = fields; status_codes = {};};
710 function event.update_option(name, field, allowed)
711 local new = fields[field];
712 if new == nil then return; end
713 if allowed and not allowed[new] then return; end
714 if new == self["get_"..name](self) then return; end
715 event.status_codes["104"] = true;
716 self["set_"..name](self, new);
719 module:fire_event("muc-config-submitted", event);
720 for submitted_field in pairs(present) do
721 event.field, event.value = submitted_field, fields[submitted_field];
722 module:fire_event("muc-config-submitted/"..submitted_field, event);
724 event.field, event.value = nil, nil;
727 origin.send(st.reply(stanza));
729 if next(event.status_codes) then
730 local msg = st.message({type='groupchat', from=self.jid})
731 :tag('x', {xmlns='http://jabber.org/protocol/muc#user'})
732 for code in pairs(event.status_codes) do
733 msg:tag("status", {code = code;}):up();
736 self:broadcast_message(msg);
739 origin.send(st.error_reply(stanza, "cancel", "bad-request", "Not a submitted form"));
744 -- Removes everyone from the room
745 function room_mt:clear(x)
746 x = x or st.stanza("x", {xmlns='http://jabber.org/protocol/muc#user'});
747 local occupants_updated = {};
748 for nick, occupant in self:each_occupant() do -- luacheck: ignore 213
750 self:save_occupant(occupant);
751 occupants_updated[occupant] = true;
753 for occupant in pairs(occupants_updated) do
754 self:publicise_occupant_status(occupant, x);
755 module:fire_event("muc-occupant-left", { room = self; nick = occupant.nick; occupant = occupant;});
759 function room_mt:destroy(newjid, reason, password)
760 local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user"})
761 :tag("item", { affiliation='none', role='none' }):up()
762 :tag("destroy", {jid=newjid});
763 if reason then x:tag("reason"):text(reason):up(); end
764 if password then x:tag("password"):text(password):up(); end
767 module:fire_event("muc-room-destroyed", { room = self });
770 function room_mt:handle_disco_info_get_query(origin, stanza)
771 origin.send(self:get_disco_info(stanza));
775 function room_mt:handle_disco_items_get_query(origin, stanza)
776 origin.send(self:get_disco_items(stanza));
780 function room_mt:handle_admin_query_set_command(origin, stanza)
781 local item = stanza.tags[1].tags[1];
783 origin.send(st.error_reply(stanza, "cancel", "bad-request"));
785 if item.attr.jid then -- Validate provided JID
786 item.attr.jid = jid_prep(item.attr.jid);
787 if not item.attr.jid then
788 origin.send(st.error_reply(stanza, "modify", "jid-malformed"));
792 if not item.attr.jid and item.attr.nick then -- COMPAT Workaround for Miranda sending 'nick' instead of 'jid' when changing affiliation
793 local occupant = self:get_occupant_by_nick(self.jid.."/"..item.attr.nick);
794 if occupant then item.attr.jid = occupant.jid; end
795 elseif not item.attr.nick and item.attr.jid then
796 local nick = self:get_occupant_jid(item.attr.jid);
797 if nick then item.attr.nick = select(3, jid_split(nick)); end
799 local actor = stanza.attr.from;
800 local reason = item:get_child_text("reason");
801 local success, errtype, err
802 if item.attr.affiliation and item.attr.jid and not item.attr.role then
803 success, errtype, err = self:set_affiliation(actor, item.attr.jid, item.attr.affiliation, reason);
804 elseif item.attr.role and item.attr.nick and not item.attr.affiliation then
805 success, errtype, err = self:set_role(actor, self.jid.."/"..item.attr.nick, item.attr.role, reason);
807 success, errtype, err = nil, "cancel", "bad-request";
811 origin.send(st.error_reply(stanza, errtype, err));
813 origin.send(st.reply(stanza));
818 function room_mt:handle_admin_query_get_command(origin, stanza)
819 local actor = stanza.attr.from;
820 local affiliation = self:get_affiliation(actor);
821 local item = stanza.tags[1].tags[1];
822 local _aff = item.attr.affiliation;
823 local _aff_rank = valid_affiliations[_aff or "none"];
824 local _rol = item.attr.role;
825 if _aff and _aff_rank and not _rol then
826 -- You need to be at least an admin, and be requesting info about your affifiliation or lower
827 -- e.g. an admin can't ask for a list of owners
828 local affiliation_rank = valid_affiliations[affiliation or "none"];
829 if affiliation_rank >= valid_affiliations.admin and affiliation_rank >= _aff_rank then
830 local reply = st.reply(stanza):query("http://jabber.org/protocol/muc#admin");
831 for jid in self:each_affiliation(_aff or "none") do
832 reply:tag("item", {affiliation = _aff, jid = jid}):up();
834 origin.send(reply:up());
837 origin.send(st.error_reply(stanza, "auth", "forbidden"));
840 elseif _rol and valid_roles[_rol or "none"] and not _aff then
841 local role = self:get_role(self:get_occupant_jid(actor)) or self:get_default_role(affiliation);
842 if valid_roles[role or "none"] >= valid_roles.moderator then
843 if _rol == "none" then _rol = nil; end
844 local reply = st.reply(stanza):query("http://jabber.org/protocol/muc#admin");
845 -- TODO: whois check here? (though fully anonymous rooms are not supported)
846 for occupant_jid, occupant in self:each_occupant() do
847 if occupant.role == _rol then
848 local nick = select(3,jid_split(occupant_jid));
849 self:build_item_list(occupant, reply, false, nick);
852 origin.send(reply:up());
855 origin.send(st.error_reply(stanza, "auth", "forbidden"));
859 origin.send(st.error_reply(stanza, "cancel", "bad-request"));
864 function room_mt:handle_owner_query_get_to_room(origin, stanza)
865 if self:get_affiliation(stanza.attr.from) ~= "owner" then
866 origin.send(st.error_reply(stanza, "auth", "forbidden", "Only owners can configure rooms"));
870 self:send_form(origin, stanza);
873 function room_mt:handle_owner_query_set_to_room(origin, stanza)
874 if self:get_affiliation(stanza.attr.from) ~= "owner" then
875 origin.send(st.error_reply(stanza, "auth", "forbidden", "Only owners can configure rooms"));
879 local child = stanza.tags[1].tags[1];
881 origin.send(st.error_reply(stanza, "modify", "bad-request"));
883 elseif child.name == "destroy" then
884 local newjid = child.attr.jid;
885 local reason = child:get_child_text("reason");
886 local password = child:get_child_text("password");
887 self:destroy(newjid, reason, password);
888 origin.send(st.reply(stanza));
890 elseif child.name == "x" and child.attr.xmlns == "jabber:x:data" then
891 return self:process_form(origin, stanza);
893 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
898 function room_mt:handle_groupchat_to_room(origin, stanza)
899 local from = stanza.attr.from;
900 local occupant = self:get_occupant_by_real_jid(from);
901 if module:fire_event("muc-occupant-groupchat", {
902 room = self; origin = origin; stanza = stanza; from = from; occupant = occupant;
903 }) then return true; end
904 stanza.attr.from = occupant.nick;
905 self:broadcast_message(stanza);
906 stanza.attr.from = from;
911 module:hook("muc-occupant-groupchat", function(event)
912 local role_rank = valid_roles[event.occupant and event.occupant.role or "none"];
913 if role_rank <= valid_roles.none then
914 event.origin.send(st.error_reply(event.stanza, "cancel", "not-acceptable"));
916 elseif role_rank <= valid_roles.visitor then
917 event.origin.send(st.error_reply(event.stanza, "auth", "forbidden"));
922 -- hack - some buggy clients send presence updates to the room rather than their nick
923 function room_mt:handle_presence_to_room(origin, stanza)
924 local current_nick = self:get_occupant_jid(stanza.attr.from);
927 local to = stanza.attr.to;
928 stanza.attr.to = current_nick;
929 handled = self:handle_presence_to_occupant(origin, stanza);
935 -- Need visitor role or higher to invite
936 module:hook("muc-pre-invite", function(event)
937 local room, stanza = event.room, event.stanza;
938 local _from = stanza.attr.from;
939 local inviter = room:get_occupant_by_real_jid(_from);
940 local role = inviter and inviter.role or room:get_default_role(room:get_affiliation(_from));
941 if valid_roles[role or "none"] <= valid_roles.visitor then
942 event.origin.send(st.error_reply(stanza, "auth", "forbidden"));
947 function room_mt:handle_mediated_invite(origin, stanza)
948 local payload = stanza:get_child("x", "http://jabber.org/protocol/muc#user"):get_child("invite");
949 local invitee = jid_prep(payload.attr.to);
951 origin.send(st.error_reply(stanza, "cancel", "jid-malformed"));
953 elseif module:fire_event("muc-pre-invite", {room = self, origin = origin, stanza = stanza}) then
956 local invite = muc_util.filter_muc_x(st.clone(stanza));
957 invite.attr.from = self.jid;
958 invite.attr.to = invitee;
959 invite:tag('x', {xmlns='http://jabber.org/protocol/muc#user'})
960 :tag('invite', {from = stanza.attr.from;})
961 :tag('reason'):text(payload:get_child_text("reason")):up()
964 if not module:fire_event("muc-invite", {room = self, stanza = invite, origin = origin, incoming = stanza}) then
965 self:route_stanza(invite);
970 -- COMPAT: Some older clients expect this
971 module:hook("muc-invite", function(event)
972 local room, stanza = event.room, event.stanza;
973 local invite = stanza:get_child("x", "http://jabber.org/protocol/muc#user"):get_child("invite");
974 local reason = invite:get_child_text("reason");
975 stanza:tag('x', {xmlns = "jabber:x:conference"; jid = room.jid;})
980 -- Add a plain message for clients which don't support invites
981 module:hook("muc-invite", function(event)
982 local room, stanza = event.room, event.stanza;
983 if not stanza:get_child("body") then
984 local invite = stanza:get_child("x", "http://jabber.org/protocol/muc#user"):get_child("invite");
985 local reason = invite:get_child_text("reason") or "";
987 :text(invite.attr.from.." invited you to the room "..room.jid..(reason == "" and (" ("..reason..")") or ""))
992 function room_mt:handle_mediated_decline(origin, stanza)
993 local payload = stanza:get_child("x", "http://jabber.org/protocol/muc#user"):get_child("decline");
994 local declinee = jid_prep(payload.attr.to);
996 origin.send(st.error_reply(stanza, "cancel", "jid-malformed"));
998 elseif module:fire_event("muc-pre-decline", {room = self, origin = origin, stanza = stanza}) then
1001 local decline = muc_util.filter_muc_x(st.clone(stanza));
1002 decline.attr.from = self.jid;
1003 decline.attr.to = declinee;
1004 decline:tag("x", {xmlns = "http://jabber.org/protocol/muc#user"})
1005 :tag("decline", {from = stanza.attr.from})
1006 :tag("reason"):text(payload:get_child_text("reason")):up()
1009 if not module:fire_event("muc-decline", {room = self, stanza = decline, origin = origin, incoming = stanza}) then
1010 declinee = decline.attr.to; -- re-fetch, in case event modified it
1012 if jid_bare(declinee) == self.jid then -- declinee jid is already an in-room jid
1013 occupant = self:get_occupant_by_nick(declinee);
1016 self:route_to_occupant(occupant, decline);
1018 self:route_stanza(decline);
1024 -- Add a plain message for clients which don't support declines
1025 module:hook("muc-decline", function(event)
1026 local room, stanza = event.room, event.stanza;
1027 if not stanza:get_child("body") then
1028 local decline = stanza:get_child("x", "http://jabber.org/protocol/muc#user"):get_child("decline");
1029 local reason = decline:get_child_text("reason") or "";
1031 :text(decline.attr.from.." declined your invite to the room "..room.jid..(reason == "" and (" ("..reason..")") or ""))
1036 function room_mt:handle_message_to_room(origin, stanza)
1037 local type = stanza.attr.type;
1038 if type == "groupchat" then
1039 return self:handle_groupchat_to_room(origin, stanza)
1040 elseif type == "error" and is_kickable_error(stanza) then
1041 return self:handle_kickable(origin, stanza)
1042 elseif type == nil then
1043 local x = stanza:get_child("x", "http://jabber.org/protocol/muc#user");
1045 local payload = x.tags[1];
1046 if payload == nil then --luacheck: ignore 542
1048 elseif payload.name == "invite" and payload.attr.to then
1049 return self:handle_mediated_invite(origin, stanza)
1050 elseif payload.name == "decline" and payload.attr.to then
1051 return self:handle_mediated_decline(origin, stanza)
1053 origin.send(st.error_reply(stanza, "cancel", "bad-request"));
1059 function room_mt:route_stanza(stanza) -- luacheck: ignore 212
1060 module:send(stanza);
1063 function room_mt:get_affiliation(jid)
1064 local node, host, resource = jid_split(jid);
1065 local bare = node and node.."@"..host or host;
1066 local result = self._affiliations[bare]; -- Affiliations are granted, revoked, and maintained based on the user's bare JID.
1067 if not result and self._affiliations[host] == "outcast" then result = "outcast"; end -- host banned
1071 -- Iterates over jid, affiliation pairs
1072 function room_mt:each_affiliation(with_affiliation)
1073 if not with_affiliation then
1074 return pairs(self._affiliations);
1076 return function(_affiliations, jid)
1078 repeat -- Iterate until we get a match
1079 jid, affiliation = next(_affiliations, jid);
1080 until jid == nil or affiliation == with_affiliation
1081 return jid, affiliation;
1082 end, self._affiliations, nil
1086 function room_mt:set_affiliation(actor, jid, affiliation, reason)
1087 if not actor then return nil, "modify", "not-acceptable"; end;
1089 local node, host, resource = jid_split(jid);
1090 if not host then return nil, "modify", "not-acceptable"; end
1091 jid = jid_join(node, host); -- Bare
1092 local is_host_only = node == nil;
1094 if valid_affiliations[affiliation or "none"] == nil then
1095 return nil, "modify", "not-acceptable";
1097 affiliation = affiliation ~= "none" and affiliation or nil; -- coerces `affiliation == false` to `nil`
1099 local target_affiliation = self._affiliations[jid]; -- Raw; don't want to check against host
1100 local is_downgrade = valid_affiliations[target_affiliation or "none"] > valid_affiliations[affiliation or "none"];
1102 if actor == true then
1103 actor = nil -- So we can pass it safely to 'publicise_occupant_status' below
1105 local actor_affiliation = self:get_affiliation(actor);
1106 if actor_affiliation == "owner" then
1107 if jid_bare(actor) == jid then -- self change
1108 -- need at least one owner
1109 local is_last = true;
1110 for j in self:each_affiliation("owner") do
1111 if j ~= jid then is_last = false; break; end
1114 return nil, "cancel", "conflict";
1117 -- owners can do anything else
1118 elseif affiliation == "owner" or affiliation == "admin"
1119 or actor_affiliation ~= "admin"
1120 or target_affiliation == "owner" or target_affiliation == "admin" then
1121 -- Can't demote owners or other admins
1122 return nil, "cancel", "not-allowed";
1126 -- Set in 'database'
1127 self._affiliations[jid] = affiliation;
1130 local role = self:get_default_role(affiliation);
1131 local role_rank = valid_roles[role or "none"];
1132 local occupants_updated = {}; -- Filled with old roles
1133 for nick, occupant in self:each_occupant() do -- luacheck: ignore 213
1134 if occupant.bare_jid == jid or (
1135 -- Outcast can be by host.
1136 is_host_only and affiliation == "outcast" and select(2, jid_split(occupant.bare_jid)) == host
1138 -- need to publcize in all cases; as affiliation in <item/> has changed.
1139 occupants_updated[occupant] = occupant.role;
1140 if occupant.role ~= role and (
1142 valid_roles[occupant.role or "none"] < role_rank -- upgrade
1144 occupant.role = role;
1145 self:save_occupant(occupant);
1150 -- Tell the room of the new occupant affiliations+roles
1151 local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user"});
1152 if not role then -- getting kicked
1153 if affiliation == "outcast" then
1154 x:tag("status", {code="301"}):up(); -- banned
1156 x:tag("status", {code="321"}):up(); -- affiliation change
1159 local is_semi_anonymous = self:get_whois() == "moderators";
1160 for occupant, old_role in pairs(occupants_updated) do
1161 self:publicise_occupant_status(occupant, x, nil, actor, reason);
1162 if occupant.role == nil then
1163 module:fire_event("muc-occupant-left", {room = self; nick = occupant.nick; occupant = occupant;});
1164 elseif is_semi_anonymous and
1165 (old_role == "moderator" and occupant.role ~= "moderator") or
1166 (old_role ~= "moderator" and occupant.role == "moderator") then -- Has gained or lost moderator status
1167 -- Send everyone else's presences (as jid visibility has changed)
1168 for real_jid in occupant:each_session() do
1169 self:send_occupant_list(real_jid, function(occupant_jid, occupant) --luacheck: ignore 212 433
1170 return occupant.bare_jid ~= jid;
1178 module:fire_event("muc-set-affiliation", {
1182 affiliation = affiliation or "none";
1184 previous_affiliation = target_affiliation;
1185 in_room = next(occupants_updated) ~= nil;
1191 function room_mt:get_role(nick)
1192 local occupant = self:get_occupant_by_nick(nick);
1193 return occupant and occupant.role or nil;
1196 function room_mt:set_role(actor, occupant_jid, role, reason)
1197 if not actor then return nil, "modify", "not-acceptable"; end
1199 local occupant = self:get_occupant_by_nick(occupant_jid);
1200 if not occupant then return nil, "modify", "item-not-found"; end
1202 if valid_roles[role or "none"] == nil then
1203 return nil, "modify", "not-acceptable";
1205 role = role ~= "none" and role or nil; -- coerces `role == false` to `nil`
1207 if actor == true then
1208 actor = nil -- So we can pass it safely to 'publicise_occupant_status' below
1210 -- Can't do anything to other owners or admins
1211 local occupant_affiliation = self:get_affiliation(occupant.bare_jid);
1212 if occupant_affiliation == "owner" or occupant_affiliation == "admin" then
1213 return nil, "cancel", "not-allowed";
1216 -- If you are trying to give or take moderator role you need to be an owner or admin
1217 if occupant.role == "moderator" or role == "moderator" then
1218 local actor_affiliation = self:get_affiliation(actor);
1219 if actor_affiliation ~= "owner" and actor_affiliation ~= "admin" then
1220 return nil, "cancel", "not-allowed";
1224 -- Need to be in the room and a moderator
1225 local actor_occupant = self:get_occupant_by_real_jid(actor);
1226 if not actor_occupant or actor_occupant.role ~= "moderator" then
1227 return nil, "cancel", "not-allowed";
1231 local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user"});
1233 x:tag("status", {code = "307"}):up();
1235 occupant.role = role;
1236 self:save_occupant(occupant);
1237 self:publicise_occupant_status(occupant, x, nil, actor, reason);
1239 module:fire_event("muc-occupant-left", {room = self; nick = occupant.nick; occupant = occupant;});
1244 local whois = module:require "muc/whois";
1245 room_mt.get_whois = whois.get;
1246 room_mt.set_whois = whois.set;
1248 local _M = {}; -- module "muc"
1250 function _M.new_room(jid, config)
1251 return setmetatable({
1255 _data = config or {};
1260 function room_mt:freeze(live)
1265 for user, affiliation in pairs(self._affiliations) do
1266 frozen[user] = affiliation;
1269 for nick, occupant in self:each_occupant() do
1271 bare_jid = occupant.bare_jid;
1272 role = occupant.role;
1275 for jid, presence in occupant:each_session() do
1276 frozen[jid] = st.preserialize(presence);
1283 function _M.restore_room(frozen)
1285 if frozen.jid and frozen._affiliations then
1286 local room = _M.new_room(frozen.jid, frozen._data);
1287 room._affiliations = frozen._affiliations;
1291 local room_jid = frozen._jid;
1292 local room = _M.new_room(room_jid, frozen._data);
1294 local occupants = {};
1295 local occupant_sessions = {};
1296 local room_name, room_host = jid_split(room_jid);
1297 for jid, data in pairs(frozen) do
1298 local node, host, resource = jid_split(jid);
1299 if node or host:sub(1,1) ~= "_" then
1300 if not resource and type(data) == "string" then
1301 -- bare jid: affiliation
1302 room._affiliations[jid] = data;
1303 elseif host == room_host and node == room_name and resource then
1304 -- full room jid: bare real jid and role
1305 local bare_jid = data.bare_jid;
1306 local occupant = occupant_lib.new(bare_jid, jid);
1307 occupant.jid = data.jid;
1308 occupant.role = data.role;
1309 occupants[bare_jid] = occupant;
1310 local sessions = occupant_sessions[bare_jid];
1312 for full_jid, presence in pairs(sessions) do
1313 occupant:set_session(full_jid, presence);
1316 occupant_sessions[bare_jid] = nil;
1318 -- full user jid: presence
1319 local presence = st.deserialize(data);
1320 local bare_jid = jid_bare(jid);
1321 local occupant = occupants[bare_jid];
1322 local sessions = occupant_sessions[bare_jid];
1324 occupant:set_session(jid, presence);
1325 elseif sessions then
1326 sessions[jid] = presence;
1328 occupant_sessions[bare_jid] = {
1336 for _, occupant in pairs(occupants) do
1337 room:save_occupant(occupant);
1343 _M.room_mt = room_mt;