2 -- Copyright (C) 2008-2009 Matthew Wild
3 -- Copyright (C) 2008-2009 Waqas Hussain
5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information.
9 local datamanager = require "util.datamanager";
10 local datetime = require "util.datetime";
12 local jid_split = require "util.jid".split;
13 local jid_bare = require "util.jid".bare;
14 local jid_prep = require "util.jid".prep;
15 local st = require "util.stanza";
16 local log = require "util.logger".init("mod_muc");
17 local multitable_new = require "util.multitable".new;
18 local t_insert, t_remove = table.insert, table.remove;
19 local setmetatable = setmetatable;
20 local base64 = require "util.encodings".base64;
21 local md5 = require "util.hashes".md5;
23 local muc_domain = nil; --module:get_host();
24 local history_length = 20;
27 local function filter_xmlns_from_array(array, filters)
30 local attr = array[i].attr;
31 if filters[attr and attr.xmlns] then
38 local function filter_xmlns_from_stanza(stanza, filters)
40 if filter_xmlns_from_array(stanza.tags, filters) ~= 0 then
41 return stanza, filter_xmlns_from_array(stanza, filters);
46 local presence_filters = {["http://jabber.org/protocol/muc"]=true;["http://jabber.org/protocol/muc#user"]=true};
47 local function get_filtered_presence(stanza)
48 return filter_xmlns_from_stanza(st.clone(stanza):reset(), presence_filters);
50 local kickable_error_conditions = {
52 ["internal-server-error"] = true;
53 ["item-not-found"] = true;
54 ["jid-malformed"] = true;
55 ["recipient-unavailable"] = true;
57 ["remote-server-not-found"] = true;
58 ["remote-server-timeout"] = true;
59 ["service-unavailable"] = true;
60 ["malformed error"] = true;
63 local function get_error_condition(stanza)
64 local _, condition = stanza:get_error();
65 return condition or "malformed error";
68 local function is_kickable_error(stanza)
69 local cond = get_error_condition(stanza);
70 return kickable_error_conditions[cond] and cond;
72 local function getUsingPath(stanza, path, getText)
74 for _, name in ipairs(path) do
75 if type(tag) ~= 'table' then return; end
76 tag = tag:child_with_name(name);
78 if tag and getText then tag = table.concat(tag); end
81 local function getTag(stanza, path) return getUsingPath(stanza, path); end
82 local function getText(stanza, path) return getUsingPath(stanza, path, true); end
86 room_mt.__index = room_mt;
88 function room_mt:get_default_role(affiliation)
89 if affiliation == "owner" or affiliation == "admin" then
91 elseif affiliation == "member" or not affiliation then
96 function room_mt:broadcast_presence(stanza, sid, code, nick)
97 stanza = get_filtered_presence(stanza);
98 local occupant = self._occupants[stanza.attr.from];
99 stanza:tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
100 :tag("item", {affiliation=occupant.affiliation or "none", role=occupant.role or "none", nick=nick}):up();
102 stanza:tag("status", {code=code}):up();
104 self:broadcast_except_nick(stanza, stanza.attr.from);
105 local me = self._occupants[stanza.attr.from];
107 stanza:tag("status", {code='110'});
108 stanza.attr.to = sid;
109 self:_route_stanza(stanza);
112 function room_mt:broadcast_message(stanza, historic)
113 local to = stanza.attr.to;
114 for occupant, o_data in pairs(self._occupants) do
115 for jid in pairs(o_data.sessions) do
116 stanza.attr.to = jid;
117 self:_route_stanza(stanza);
121 if historic then -- add to history
122 local history = self._data['history'];
123 if not history then history = {}; self._data['history'] = history; end
124 stanza = st.clone(stanza);
125 stanza:tag("delay", {xmlns = "urn:xmpp:delay", from = muc_domain, stamp = datetime.datetime()}):up(); -- XEP-0203
126 stanza:tag("x", {xmlns = "jabber:x:delay", from = muc_domain, stamp = datetime.legacy()}):up(); -- XEP-0091 (deprecated)
127 t_insert(history, st.preserialize(stanza));
128 while #history > history_length do t_remove(history, 1) end
131 function room_mt:broadcast_except_nick(stanza, nick)
132 for rnick, occupant in pairs(self._occupants) do
133 if rnick ~= nick then
134 for jid in pairs(occupant.sessions) do
135 stanza.attr.to = jid;
136 self:_route_stanza(stanza);
142 function room_mt:send_occupant_list(to)
143 local current_nick = self._jid_nick[to];
144 for occupant, o_data in pairs(self._occupants) do
145 if occupant ~= current_nick then
146 local pres = get_filtered_presence(o_data.sessions[o_data.jid]);
147 pres.attr.to, pres.attr.from = to, occupant;
148 pres:tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
149 :tag("item", {affiliation=o_data.affiliation or "none", role=o_data.role or "none"}):up();
150 self:_route_stanza(pres);
154 function room_mt:send_history(to)
155 local history = self._data['history']; -- send discussion history
157 for _, msg in ipairs(history) do
158 msg = st.deserialize(msg);
160 self:_route_stanza(msg);
163 if self._data['subject'] then
164 self:_route_stanza(st.message({type='groupchat', from=self.jid, to=to}):tag("subject"):text(self._data['subject']));
168 function room_mt:get_disco_info(stanza)
169 return st.reply(stanza):query("http://jabber.org/protocol/disco#info")
170 :tag("identity", {category="conference", type="text"}):up()
171 :tag("feature", {var="http://jabber.org/protocol/muc"});
173 function room_mt:get_disco_items(stanza)
174 local reply = st.reply(stanza):query("http://jabber.org/protocol/disco#items");
175 for room_jid in pairs(self._occupants) do
176 reply:tag("item", {jid = room_jid, name = room_jid:match("/(.*)")}):up();
180 function room_mt:set_subject(current_nick, subject)
181 -- TODO check nick's authority
182 if subject == "" then subject = nil; end
183 self._data['subject'] = subject;
184 if self.save then self:save(); end
185 local msg = st.message({type='groupchat', from=current_nick})
186 :tag('subject'):text(subject):up();
187 self:broadcast_message(msg, false);
191 local function build_unavailable_presence_from_error(stanza)
192 local type, condition, text = stanza:get_error();
193 local error_message = "Kicked: "..condition:gsub("%-", " ");
195 error_message = error_message..": "..text;
197 return st.presence({type='unavailable', from=stanza.attr.from, to=stanza.attr.to})
198 :tag('status'):text(error_message);
201 function room_mt:handle_to_occupant(origin, stanza) -- PM, vCards, etc
202 local from, to = stanza.attr.from, stanza.attr.to;
203 local room = jid_bare(to);
204 local current_nick = self._jid_nick[from];
205 local type = stanza.attr.type;
206 log("debug", "room: %s, current_nick: %s, stanza: %s", room or "nil", current_nick or "nil", stanza:top_tag());
207 if (select(2, jid_split(from)) == muc_domain) then error("Presence from the MUC itself!!!"); end
208 if stanza.name == "presence" then
209 local pr = get_filtered_presence(stanza);
210 pr.attr.from = current_nick;
211 if type == "error" then -- error, kick em out!
213 log("debug", "kicking %s from %s", current_nick, room);
214 self:handle_to_occupant(origin, build_unavailable_presence_from_error(stanza));
216 elseif type == "unavailable" then -- unavailable
218 log("debug", "%s leaving %s", current_nick, room);
219 local occupant = self._occupants[current_nick];
220 local new_jid = next(occupant.sessions);
221 if new_jid == from then new_jid = next(occupant.sessions, new_jid); end
223 local jid = occupant.jid;
224 occupant.jid = new_jid;
225 occupant.sessions[from] = nil;
227 pr:tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
228 :tag("item", {affiliation=occupant.affiliation or "none", role='none'}):up()
229 :tag("status", {code='110'});
230 self:_route_stanza(pr);
231 if jid ~= new_jid then
232 pr = st.clone(occupant.sessions[new_jid])
233 :tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
234 :tag("item", {affiliation=occupant.affiliation or "none", role=occupant.role or "none"});
235 pr.attr.from = current_nick;
236 self:broadcast_except_nick(pr, current_nick);
239 occupant.role = 'none';
240 self:broadcast_presence(pr, from);
241 self._occupants[current_nick] = nil;
243 self._jid_nick[from] = nil;
245 elseif not type then -- available
247 --if #pr == #stanza or current_nick ~= to then -- commented because google keeps resending directed presence
248 if current_nick == to then -- simple presence
249 log("debug", "%s broadcasted presence", current_nick);
250 self._occupants[current_nick].sessions[from] = pr;
251 self:broadcast_presence(pr, from);
253 local occupant = self._occupants[current_nick];
254 local is_multisession = next(occupant.sessions, next(occupant.sessions));
255 if self._occupants[to] or is_multisession then
256 log("debug", "%s couldn't change nick", current_nick);
257 local reply = st.error_reply(stanza, "cancel", "conflict"):up();
258 reply.tags[1].attr.code = "409";
259 origin.send(reply:tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
261 local data = self._occupants[current_nick];
262 local to_nick = select(3, jid_split(to));
264 log("debug", "%s (%s) changing nick to %s", current_nick, data.jid, to);
265 local p = st.presence({type='unavailable', from=current_nick});
266 self:broadcast_presence(p, from, '303', to_nick);
267 self._occupants[current_nick] = nil;
268 self._occupants[to] = data;
269 self._jid_nick[from] = to;
271 self._occupants[to].sessions[from] = pr;
272 self:broadcast_presence(pr, from);
278 --else -- possible rejoin
279 -- log("debug", "%s had connection replaced", current_nick);
280 -- self:handle_to_occupant(origin, st.presence({type='unavailable', from=from, to=to})
281 -- :tag('status'):text('Replaced by new connection'):up()); -- send unavailable
282 -- self:handle_to_occupant(origin, stanza); -- resend available
287 if self._occupants[to] then
288 if jid_bare(from) ~= jid_bare(self._occupants[to].jid) then
294 log("debug", "%s couldn't join due to nick conflict: %s", from, to);
295 local reply = st.error_reply(stanza, "cancel", "conflict"):up();
296 reply.tags[1].attr.code = "409";
297 origin.send(reply:tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
299 log("debug", "%s joining as %s", from, to);
300 if not next(self._affiliations) then -- new room, no owners
301 self._affiliations[jid_bare(from)] = "owner";
303 local affiliation = self:get_affiliation(from);
304 local role = self:get_default_role(affiliation)
305 if role then -- new occupant
307 self._occupants[to] = {affiliation=affiliation, role=role, jid=from, sessions={[from]=get_filtered_presence(stanza)}};
309 self._occupants[to].sessions[from] = get_filtered_presence(stanza);
311 self._jid_nick[from] = to;
312 self:send_occupant_list(from);
315 self:broadcast_presence(pr, from);
318 self:_route_stanza(pr:tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
319 :tag("item", {affiliation=affiliation or "none", role=role or "none"}):up()
320 :tag("status", {code='110'}));
322 self:send_history(from);
324 local reply = st.error_reply(stanza, "auth", "forbidden"):up();
325 reply.tags[1].attr.code = "403";
326 origin.send(reply:tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
330 elseif type ~= 'result' then -- bad type
331 if type ~= 'visible' and type ~= 'invisible' then -- COMPAT ejabberd can broadcast or forward XEP-0018 presences
332 origin.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME correct error?
335 elseif not current_nick then -- not in room
336 if type == "error" or type == "result" then
337 local id = stanza.name == "iq" and stanza.attr.id and base64.decode(stanza.attr.id);
338 local _nick, _id, _hash = (id or ""):match("^(.+)%z(.*)%z(.+)$");
339 local occupant = self._occupants[stanza.attr.to];
340 if occupant and _nick and self._jid_nick[_nick] and _id and _hash then
341 local id, _to = stanza.attr.id;
342 for jid in pairs(occupant.sessions) do
343 if md5(jid) == _hash then
349 stanza.attr.to, stanza.attr.from, stanza.attr.id = _to, self._jid_nick[_nick], _id;
350 self:_route_stanza(stanza);
351 stanza.attr.to, stanza.attr.from, stanza.attr.id = to, from, id;
355 origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
357 elseif stanza.name == "message" and type == "groupchat" then -- groupchat messages not allowed in PM
358 origin.send(st.error_reply(stanza, "modify", "bad-request"));
359 elseif current_nick and stanza.name == "message" and type == "error" and is_kickable_error(stanza) then
360 log("debug", "%s kicked from %s for sending an error message", current_nick, self.jid);
361 self:handle_to_occupant(origin, build_unavailable_presence_from_error(stanza)); -- send unavailable
362 else -- private stanza
363 local o_data = self._occupants[to];
365 log("debug", "%s sent private stanza to %s (%s)", from, to, o_data.jid);
366 local jid = o_data.jid;
367 local bare = jid_bare(jid);
368 stanza.attr.to, stanza.attr.from = jid, current_nick;
369 local id = stanza.attr.id;
370 if stanza.name=='iq' and type=='get' and stanza.tags[1].attr.xmlns == 'vcard-temp' and bare ~= jid then
371 stanza.attr.to = bare;
372 stanza.attr.id = base64.encode(jid.."\0"..id.."\0"..md5(from));
374 self:_route_stanza(stanza);
375 stanza.attr.to, stanza.attr.from, stanza.attr.id = to, from, id;
376 elseif type ~= "error" and type ~= "result" then -- recipient not in room
377 origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Recipient not in room"));
382 function room_mt:send_form(origin, stanza)
383 local title = "Configuration for "..self.jid;
384 origin.send(st.reply(stanza):query("http://jabber.org/protocol/muc#owner")
385 :tag("x", {xmlns='jabber:x:data', type='form'})
386 :tag("title"):text(title):up()
387 :tag("instructions"):text(title):up()
388 :tag("field", {type='hidden', var='FORM_TYPE'}):tag("value"):text("http://jabber.org/protocol/muc#roomconfig"):up():up()
389 :tag("field", {type='boolean', label='Make Room Persistent?', var='muc#roomconfig_persistentroom'})
390 :tag("value"):text(self._data.persistent and "1" or "0"):up()
392 :tag("field", {type='boolean', label='Make Room Publicly Searchable?', var='muc#roomconfig_publicroom'})
393 :tag("value"):text(self._data.hidden and "0" or "1"):up()
395 :tag("field", {type='list-single', label='Who May Discover Real JIDs?', var='muc#roomconfig_whois'})
396 :tag("value"):text(self._data.whois or 'moderators'):up()
397 :tag("option", {label = 'Moderators Only'})
398 :tag("value"):text('moderators'):up()
400 :tag("option", {label = 'Anyone'})
401 :tag("value"):text('anyone'):up()
407 local valid_whois = {
412 function room_mt:process_form(origin, stanza)
413 local query = stanza.tags[1];
415 for _, tag in ipairs(query.tags) do if tag.name == "x" and tag.attr.xmlns == "jabber:x:data" then form = tag; break; end end
416 if not form then origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); return; end
417 if form.attr.type == "cancel" then origin.send(st.reply(stanza)); return; end
418 if form.attr.type ~= "submit" then origin.send(st.error_reply(stanza, "cancel", "bad-request")); return; end
420 for _, field in pairs(form.tags) do
421 if field.name == "field" and field.attr.var and field.tags[1].name == "value" and #field.tags[1].tags == 0 then
422 fields[field.attr.var] = field.tags[1][1] or "";
425 if fields.FORM_TYPE ~= "http://jabber.org/protocol/muc#roomconfig" then origin.send(st.error_reply(stanza, "cancel", "bad-request")); return; end
429 local persistent = fields['muc#roomconfig_persistentroom'];
430 if persistent == "0" or persistent == "false" then persistent = nil; elseif persistent == "1" or persistent == "true" then persistent = true;
431 else origin.send(st.error_reply(stanza, "cancel", "bad-request")); return; end
432 dirty = dirty or (self._data.persistent ~= persistent)
433 self._data.persistent = persistent;
434 module:log("debug", "persistent=%s", tostring(persistent));
436 local public = fields['muc#roomconfig_publicroom'];
437 if public == "0" or public == "false" then public = nil; elseif public == "1" or public == "true" then public = true;
438 else origin.send(st.error_reply(stanza, "cancel", "bad-request")); return; end
439 dirty = dirty or (self._data.hidden ~= (not public and true or nil))
440 self._data.hidden = not public and true or nil;
442 local whois = fields['muc#roomconfig_whois'];
443 if not valid_whois[whois] then
444 origin.send(st.error_reply(stanza, 'cancel', 'bad-request'));
447 local whois_changed = self._data.whois ~= whois
448 self._data.whois = whois
449 module:log('debug', 'whois=%s', tostring(whois))
451 if self.save then self:save(true); end
452 origin.send(st.reply(stanza));
454 if dirty or whois_changed then
455 local msg = st.message({type='groupchat', from=self.jid})
456 :tag('x', {xmlns='http://jabber.org/protocol/muc#user'}):up()
459 msg.tags[1]:tag('status', {code = '104'})
461 if whois_changed then
462 local code = (whois == 'moderators') and 173 or 172
463 msg.tags[1]:tag('status', {code = code})
466 self:broadcast_message(msg, false)
470 function room_mt:destroy(newjid, reason, password)
471 local pr = st.presence({type = "unavailable"})
472 :tag("x", {xmlns = "http://jabber.org/protocol/muc#user"})
473 :tag("item", { affiliation='none', role='none' }):up()
474 :tag("destroy", {jid=newjid})
475 if reason then pr:tag("reason"):text(reason):up(); end
476 if password then pr:tag("password"):text(password):up(); end
477 for nick, occupant in pairs(self._occupants) do
479 for jid in pairs(occupant.sessions) do
481 self:_route_stanza(pr);
482 self._jid_nick[jid] = nil;
484 self._occupants[nick] = nil;
486 self._data.persistent = nil;
487 if self.save then self:save(true); end
490 function room_mt:handle_to_room(origin, stanza) -- presence changes and groupchat messages, along with disco/etc
491 local type = stanza.attr.type;
492 local xmlns = stanza.tags[1] and stanza.tags[1].attr.xmlns;
493 if stanza.name == "iq" then
494 if xmlns == "http://jabber.org/protocol/disco#info" and type == "get" then
495 origin.send(self:get_disco_info(stanza));
496 elseif xmlns == "http://jabber.org/protocol/disco#items" and type == "get" then
497 origin.send(self:get_disco_items(stanza));
498 elseif xmlns == "http://jabber.org/protocol/muc#admin" then
499 local actor = stanza.attr.from;
500 local affiliation = self:get_affiliation(actor);
501 local current_nick = self._jid_nick[actor];
502 local role = current_nick and self._occupants[current_nick].role or self:get_default_role(affiliation);
503 local item = stanza.tags[1].tags[1];
504 if item and item.name == "item" then
505 if type == "set" then
506 local callback = function() origin.send(st.reply(stanza)); end
507 if item.attr.jid then -- Validate provided JID
508 item.attr.jid = jid_prep(item.attr.jid);
509 if not item.attr.jid then
510 origin.send(st.error_reply(stanza, "modify", "jid-malformed"));
514 if not item.attr.jid and item.attr.nick then -- COMPAT Workaround for Miranda sending 'nick' instead of 'jid' when changing affiliation
515 local occupant = self._occupants[self.jid.."/"..item.attr.nick];
516 if occupant then item.attr.jid = occupant.jid; end
517 elseif not item.attr.nick and item.attr.jid then
518 local nick = self._jid_nick[item.attr.jid];
519 if nick then item.attr.nick = select(3, jid_split(nick)); end
521 local reason = item.tags[1] and item.tags[1].name == "reason" and #item.tags[1] == 1 and item.tags[1][1];
522 if item.attr.affiliation and item.attr.jid and not item.attr.role then
523 local success, errtype, err = self:set_affiliation(actor, item.attr.jid, item.attr.affiliation, callback, reason);
524 if not success then origin.send(st.error_reply(stanza, errtype, err)); end
525 elseif item.attr.role and item.attr.nick and not item.attr.affiliation then
526 local success, errtype, err = self:set_role(actor, self.jid.."/"..item.attr.nick, item.attr.role, callback, reason);
527 if not success then origin.send(st.error_reply(stanza, errtype, err)); end
529 origin.send(st.error_reply(stanza, "cancel", "bad-request"));
531 elseif type == "get" then
532 local _aff = item.attr.affiliation;
533 local _rol = item.attr.role;
534 if _aff and not _rol then
535 if affiliation == "owner" or (affiliation == "admin" and _aff ~= "owner" and _aff ~= "admin") then
536 local reply = st.reply(stanza):query("http://jabber.org/protocol/muc#admin");
537 for jid, affiliation in pairs(self._affiliations) do
538 if affiliation == _aff then
539 reply:tag("item", {affiliation = _aff, jid = jid}):up();
544 origin.send(st.error_reply(stanza, "auth", "forbidden"));
546 elseif _rol and not _aff then
547 if role == "moderator" then
548 -- TODO allow admins and owners not in room? Provide read-only access to everyone who can see the participants anyway?
549 if _rol == "none" then _rol = nil; end
550 local reply = st.reply(stanza):query("http://jabber.org/protocol/muc#admin");
551 for occupant_jid, occupant in pairs(self._occupants) do
552 if occupant.role == _rol then
554 nick = select(3, jid_split(occupant_jid)),
555 role = _rol or "none",
556 affiliation = occupant.affiliation or "none",
563 origin.send(st.error_reply(stanza, "auth", "forbidden"));
566 origin.send(st.error_reply(stanza, "cancel", "bad-request"));
569 elseif type == "set" or type == "get" then
570 origin.send(st.error_reply(stanza, "cancel", "bad-request"));
572 elseif xmlns == "http://jabber.org/protocol/muc#owner" and (type == "get" or type == "set") and stanza.tags[1].name == "query" then
573 if self:get_affiliation(stanza.attr.from) ~= "owner" then
574 origin.send(st.error_reply(stanza, "auth", "forbidden"));
575 elseif stanza.attr.type == "get" then
576 self:send_form(origin, stanza);
577 elseif stanza.attr.type == "set" then
578 local child = stanza.tags[1].tags[1];
580 origin.send(st.error_reply(stanza, "auth", "bad-request"));
581 elseif child.name == "destroy" then
582 local newjid = child.attr.jid;
583 local reason, password;
584 for _,tag in ipairs(child.tags) do
585 if tag.name == "reason" then
586 reason = #tag.tags == 0 and tag[1];
587 elseif tag.name == "password" then
588 password = #tag.tags == 0 and tag[1];
591 self:destroy(newjid, reason, password);
592 origin.send(st.reply(stanza));
594 self:process_form(origin, stanza);
597 elseif type == "set" or type == "get" then
598 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
600 elseif stanza.name == "message" and type == "groupchat" then
601 local from, to = stanza.attr.from, stanza.attr.to;
602 local room = jid_bare(to);
603 local current_nick = self._jid_nick[from];
604 local occupant = self._occupants[current_nick];
605 if not occupant then -- not in room
606 origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
607 elseif occupant.role == "visitor" then
608 origin.send(st.error_reply(stanza, "cancel", "forbidden"));
610 local from = stanza.attr.from;
611 stanza.attr.from = current_nick;
612 local subject = getText(stanza, {"subject"});
614 if occupant.role == "moderator" then
615 self:set_subject(current_nick, subject); -- TODO use broadcast_message_stanza
617 stanza.attr.from = from;
618 origin.send(st.error_reply(stanza, "cancel", "forbidden"));
621 self:broadcast_message(stanza, true);
623 stanza.attr.from = from;
625 elseif stanza.name == "message" and type == "error" and is_kickable_error(stanza) then
626 local current_nick = self._jid_nick[stanza.attr.from];
627 log("debug", "%s kicked from %s for sending an error message", current_nick, self.jid);
628 self:handle_to_occupant(origin, build_unavailable_presence_from_error(stanza)); -- send unavailable
629 elseif stanza.name == "presence" then -- hack - some buggy clients send presence updates to the room rather than their nick
630 local to = stanza.attr.to;
631 local current_nick = self._jid_nick[stanza.attr.from];
633 stanza.attr.to = current_nick;
634 self:handle_to_occupant(origin, stanza);
636 elseif type ~= "error" and type ~= "result" then
637 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
639 elseif stanza.name == "message" and not stanza.attr.type and #stanza.tags == 1 and self._jid_nick[stanza.attr.from]
640 and stanza.tags[1].name == "x" and stanza.tags[1].attr.xmlns == "http://jabber.org/protocol/muc#user" then
641 local x = stanza.tags[1];
642 local payload = (#x.tags == 1 and x.tags[1]);
643 if payload and payload.name == "invite" and payload.attr.to then
644 local _from, _to = stanza.attr.from, stanza.attr.to;
645 local _invitee = jid_prep(payload.attr.to);
647 local _reason = payload.tags[1] and payload.tags[1].name == 'reason' and #payload.tags[1].tags == 0 and payload.tags[1][1];
648 local invite = st.message({from = _to, to = _invitee, id = stanza.attr.id})
649 :tag('x', {xmlns='http://jabber.org/protocol/muc#user'})
650 :tag('invite', {from=_from})
651 :tag('reason'):text(_reason or ""):up()
654 :tag('x', {xmlns="jabber:x:conference", jid=_to}) -- COMPAT: Some older clients expect this
657 :tag('body') -- Add a plain message for clients which don't support invites
658 :text(_from..' invited you to the room '.._to..(_reason and (' ('.._reason..')') or ""))
660 self:_route_stanza(invite);
662 origin.send(st.error_reply(stanza, "cancel", "jid-malformed"));
665 origin.send(st.error_reply(stanza, "cancel", "bad-request"));
668 if type == "error" or type == "result" then return; end
669 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
673 function room_mt:handle_stanza(origin, stanza)
674 local to_node, to_host, to_resource = jid_split(stanza.attr.to);
676 self:handle_to_occupant(origin, stanza);
678 self:handle_to_room(origin, stanza);
682 function room_mt:route_stanza(stanza) end -- Replace with a routing function, e.g., function(room, stanza) core_route_stanza(origin, stanza); end
684 function room_mt:get_affiliation(jid)
685 local node, host, resource = jid_split(jid);
686 local bare = node and node.."@"..host or host;
687 local result = self._affiliations[bare]; -- Affiliations are granted, revoked, and maintained based on the user's bare JID.
688 if not result and self._affiliations[host] == "outcast" then result = "outcast"; end -- host banned
691 function room_mt:set_affiliation(actor, jid, affiliation, callback, reason)
693 if affiliation == "none" then affiliation = nil; end
694 if affiliation and affiliation ~= "outcast" and affiliation ~= "owner" and affiliation ~= "admin" and affiliation ~= "member" then
695 return nil, "modify", "not-acceptable";
697 if self:get_affiliation(actor) ~= "owner" then return nil, "cancel", "not-allowed"; end
698 if jid_bare(actor) == jid then return nil, "cancel", "not-allowed"; end
699 self._affiliations[jid] = affiliation;
700 local role = self:get_default_role(affiliation);
701 local p = st.presence()
702 :tag("x", {xmlns = "http://jabber.org/protocol/muc#user"})
703 :tag("item", {affiliation=affiliation or "none", role=role or "none"})
704 :tag("reason"):text(reason or ""):up()
707 local item = x.tags[1];
708 if not role then -- getting kicked
709 p.attr.type = "unavailable";
710 if affiliation == "outcast" then
711 x:tag("status", {code="301"}):up(); -- banned
713 x:tag("status", {code="321"}):up(); -- affiliation change
716 local modified_nicks = {};
717 for nick, occupant in pairs(self._occupants) do
718 if jid_bare(occupant.jid) == jid then
719 if not role then -- getting kicked
720 self._occupants[nick] = nil;
722 t_insert(modified_nicks, nick);
723 occupant.affiliation, occupant.role = affiliation, role;
726 for jid in pairs(occupant.sessions) do -- remove for all sessions of the nick
727 if not role then self._jid_nick[jid] = nil; end
729 self:_route_stanza(p);
733 if self.save then self:save(); end
734 if callback then callback(); end
735 for _, nick in ipairs(modified_nicks) do
737 self:broadcast_except_nick(p, nick);
742 function room_mt:get_role(nick)
743 local session = self._occupants[nick];
744 return session and session.role or nil;
746 function room_mt:set_role(actor, occupant_jid, role, callback, reason)
747 if role == "none" then role = nil; end
748 if role and role ~= "moderator" and role ~= "participant" and role ~= "visitor" then return nil, "modify", "not-acceptable"; end
749 if self:get_affiliation(actor) ~= "owner" then return nil, "cancel", "not-allowed"; end
750 local occupant = self._occupants[occupant_jid];
751 if not occupant then return nil, "modify", "not-acceptable"; end
752 if occupant.affiliation == "owner" or occupant.affiliation == "admin" then return nil, "cancel", "not-allowed"; end
753 local p = st.presence({from = occupant_jid})
754 :tag("x", {xmlns = "http://jabber.org/protocol/muc#user"})
755 :tag("item", {affiliation=occupant.affiliation or "none", nick=select(3, jid_split(occupant_jid)), role=role or "none"})
756 :tag("reason"):text(reason or ""):up()
758 if not role then -- kick
759 p.attr.type = "unavailable";
760 self._occupants[occupant_jid] = nil;
761 for jid in pairs(occupant.sessions) do -- remove for all sessions of the nick
762 self._jid_nick[jid] = nil;
764 p:tag("status", {code = "307"}):up();
766 occupant.role = role;
768 for jid in pairs(occupant.sessions) do -- send to all sessions of the nick
770 self:_route_stanza(p);
772 if callback then callback(); end
773 self:broadcast_except_nick(p, occupant_jid);
777 function room_mt:_route_stanza(stanza)
779 local to_occupant = self._occupants[self._jid_nick[stanza.attr.to]];
780 local from_occupant = self._occupants[stanza.attr.from];
781 if stanza.name == "presence" then
782 if to_occupant and from_occupant then
783 if self._data.whois == 'anyone' then
784 muc_child = stanza:get_child("x", "http://jabber.org/protocol/muc#user");
786 if to_occupant.role == "moderator" or jid_bare(to_occupant.jid) == jid_bare(from_occupant.jid) then
787 muc_child = stanza:get_child("x", "http://jabber.org/protocol/muc#user");
793 for _, item in pairs(muc_child.tags) do
794 if item.name == "item" then
795 if from_occupant == to_occupant then
796 item.attr.jid = stanza.attr.to;
798 item.attr.jid = from_occupant.jid;
802 if self._data.whois == 'anyone' then
803 muc_child:tag('status', { code = '100' });
806 self:route_stanza(stanza);
808 for _, item in pairs(muc_child.tags) do
809 if item.name == "item" then
816 local _M = {}; -- module "muc"
818 function _M.new_room(jid)
819 return setmetatable({
824 whois = 'moderators',