2 -- Copyright (C) 2008-2010 Matthew Wild
3 -- Copyright (C) 2008-2010 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);
126 local stamp = datetime.datetime();
127 local chars = #tostring(stanza);
128 stanza:tag("delay", {xmlns = "urn:xmpp:delay", from = muc_domain, stamp = stamp}):up(); -- XEP-0203
129 stanza:tag("x", {xmlns = "jabber:x:delay", from = muc_domain, stamp = datetime.legacy()}):up(); -- XEP-0091 (deprecated)
130 local entry = { stanza = stanza, stamp = stamp };
131 t_insert(history, entry);
132 while #history > history_length do t_remove(history, 1) end
135 function room_mt:broadcast_except_nick(stanza, nick)
136 for rnick, occupant in pairs(self._occupants) do
137 if rnick ~= nick then
138 for jid in pairs(occupant.sessions) do
139 stanza.attr.to = jid;
140 self:_route_stanza(stanza);
146 function room_mt:send_occupant_list(to)
147 local current_nick = self._jid_nick[to];
148 for occupant, o_data in pairs(self._occupants) do
149 if occupant ~= current_nick then
150 local pres = get_filtered_presence(o_data.sessions[o_data.jid]);
151 pres.attr.to, pres.attr.from = to, occupant;
152 pres:tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
153 :tag("item", {affiliation=o_data.affiliation or "none", role=o_data.role or "none"}):up();
154 self:_route_stanza(pres);
158 function room_mt:send_history(to, stanza)
159 local history = self._data['history']; -- send discussion history
161 local x_tag = stanza and stanza:get_child("x", "http://jabber.org/protocol/muc");
162 local history_tag = x_tag and x_tag:get_child("history", "http://jabber.org/protocol/muc");
164 local maxchars = history_tag and tonumber(history_tag.attr.maxchars);
165 if maxchars then maxchars = math.floor(maxchars); end
167 local maxstanzas = math.floor(history_tag and tonumber(history_tag.attr.maxstanzas) or #history);
168 if not history_tag then maxstanzas = 20; end
170 local seconds = history_tag and tonumber(history_tag.attr.seconds);
171 if seconds then seconds = datetime.datetime(os.time() - math.floor(seconds)); end
173 local since = history_tag and history_tag.attr.since;
174 if since and not since:match("^%d%d%d%d%-%d%d%-%d%dT%d%d:%d%d:%d%dZ$") then since = nil; end -- FIXME timezone support
175 if seconds and (not since or since < seconds) then since = seconds; end
179 local stanzacount = 0;
181 for i=#history,1,-1 do
182 local entry = history[i];
184 if not entry.chars then
185 entry.stanza.attr.to = "";
186 entry.chars = #tostring(entry.stanza);
188 charcount = charcount + entry.chars + #to;
189 if charcount > maxchars then break; end
191 if since and since > entry.stamp then break; end
192 if n + 1 > maxstanzas then break; end
195 for i=#history-n+1,#history do
196 local msg = history[i].stanza;
198 self:_route_stanza(msg);
201 if self._data['subject'] then
202 self:_route_stanza(st.message({type='groupchat', from=self.jid, to=to}):tag("subject"):text(self._data['subject']));
206 function room_mt:get_disco_info(stanza)
207 return st.reply(stanza):query("http://jabber.org/protocol/disco#info")
208 :tag("identity", {category="conference", type="text"}):up()
209 :tag("feature", {var="http://jabber.org/protocol/muc"}):up()
210 :tag("feature", {var=self:get_password() and "muc_passwordprotected" or "muc_unsecured"}):up()
213 function room_mt:get_disco_items(stanza)
214 local reply = st.reply(stanza):query("http://jabber.org/protocol/disco#items");
215 for room_jid in pairs(self._occupants) do
216 reply:tag("item", {jid = room_jid, name = room_jid:match("/(.*)")}):up();
220 function room_mt:set_subject(current_nick, subject)
221 -- TODO check nick's authority
222 if subject == "" then subject = nil; end
223 self._data['subject'] = subject;
224 if self.save then self:save(); end
225 local msg = st.message({type='groupchat', from=current_nick})
226 :tag('subject'):text(subject):up();
227 self:broadcast_message(msg, false);
231 local function build_unavailable_presence_from_error(stanza)
232 local type, condition, text = stanza:get_error();
233 local error_message = "Kicked: "..condition:gsub("%-", " ");
235 error_message = error_message..": "..text;
237 return st.presence({type='unavailable', from=stanza.attr.from, to=stanza.attr.to})
238 :tag('status'):text(error_message);
241 function room_mt:set_password(password)
242 if password == "" or type(password) ~= "string" then password = nil; end
243 self._data.password = password;
246 function room_mt:get_password()
247 return self._data.password;
250 function room_mt:handle_to_occupant(origin, stanza) -- PM, vCards, etc
251 local from, to = stanza.attr.from, stanza.attr.to;
252 local room = jid_bare(to);
253 local current_nick = self._jid_nick[from];
254 local type = stanza.attr.type;
255 log("debug", "room: %s, current_nick: %s, stanza: %s", room or "nil", current_nick or "nil", stanza:top_tag());
256 if (select(2, jid_split(from)) == muc_domain) then error("Presence from the MUC itself!!!"); end
257 if stanza.name == "presence" then
258 local pr = get_filtered_presence(stanza);
259 pr.attr.from = current_nick;
260 if type == "error" then -- error, kick em out!
262 log("debug", "kicking %s from %s", current_nick, room);
263 self:handle_to_occupant(origin, build_unavailable_presence_from_error(stanza));
265 elseif type == "unavailable" then -- unavailable
267 log("debug", "%s leaving %s", current_nick, room);
268 local occupant = self._occupants[current_nick];
269 local new_jid = next(occupant.sessions);
270 if new_jid == from then new_jid = next(occupant.sessions, new_jid); end
272 local jid = occupant.jid;
273 occupant.jid = new_jid;
274 occupant.sessions[from] = nil;
276 pr:tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
277 :tag("item", {affiliation=occupant.affiliation or "none", role='none'}):up()
278 :tag("status", {code='110'});
279 self:_route_stanza(pr);
280 if jid ~= new_jid then
281 pr = st.clone(occupant.sessions[new_jid])
282 :tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
283 :tag("item", {affiliation=occupant.affiliation or "none", role=occupant.role or "none"});
284 pr.attr.from = current_nick;
285 self:broadcast_except_nick(pr, current_nick);
288 occupant.role = 'none';
289 self:broadcast_presence(pr, from);
290 self._occupants[current_nick] = nil;
292 self._jid_nick[from] = nil;
294 elseif not type then -- available
296 --if #pr == #stanza or current_nick ~= to then -- commented because google keeps resending directed presence
297 if current_nick == to then -- simple presence
298 log("debug", "%s broadcasted presence", current_nick);
299 self._occupants[current_nick].sessions[from] = pr;
300 self:broadcast_presence(pr, from);
302 local occupant = self._occupants[current_nick];
303 local is_multisession = next(occupant.sessions, next(occupant.sessions));
304 if self._occupants[to] or is_multisession then
305 log("debug", "%s couldn't change nick", current_nick);
306 local reply = st.error_reply(stanza, "cancel", "conflict"):up();
307 reply.tags[1].attr.code = "409";
308 origin.send(reply:tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
310 local data = self._occupants[current_nick];
311 local to_nick = select(3, jid_split(to));
313 log("debug", "%s (%s) changing nick to %s", current_nick, data.jid, to);
314 local p = st.presence({type='unavailable', from=current_nick});
315 self:broadcast_presence(p, from, '303', to_nick);
316 self._occupants[current_nick] = nil;
317 self._occupants[to] = data;
318 self._jid_nick[from] = to;
320 self._occupants[to].sessions[from] = pr;
321 self:broadcast_presence(pr, from);
327 --else -- possible rejoin
328 -- log("debug", "%s had connection replaced", current_nick);
329 -- self:handle_to_occupant(origin, st.presence({type='unavailable', from=from, to=to})
330 -- :tag('status'):text('Replaced by new connection'):up()); -- send unavailable
331 -- self:handle_to_occupant(origin, stanza); -- resend available
336 if self._occupants[to] then
337 if jid_bare(from) ~= jid_bare(self._occupants[to].jid) then
342 local password = stanza:get_child("x", "http://jabber.org/protocol/muc");
343 password = password and password:get_child("password", "http://jabber.org/protocol/muc");
344 password = password and password[1] ~= "" and password[1];
345 if self:get_password() and self:get_password() ~= password then
346 log("debug", "%s couldn't join due to invalid password: %s", from, to);
347 local reply = st.error_reply(stanza, "auth", "not-authorized"):up();
348 reply.tags[1].attr.code = "401";
349 origin.send(reply:tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
350 elseif not new_nick then
351 log("debug", "%s couldn't join due to nick conflict: %s", from, to);
352 local reply = st.error_reply(stanza, "cancel", "conflict"):up();
353 reply.tags[1].attr.code = "409";
354 origin.send(reply:tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
356 log("debug", "%s joining as %s", from, to);
357 if not next(self._affiliations) then -- new room, no owners
358 self._affiliations[jid_bare(from)] = "owner";
360 local affiliation = self:get_affiliation(from);
361 local role = self:get_default_role(affiliation)
362 if role then -- new occupant
364 self._occupants[to] = {affiliation=affiliation, role=role, jid=from, sessions={[from]=get_filtered_presence(stanza)}};
366 self._occupants[to].sessions[from] = get_filtered_presence(stanza);
368 self._jid_nick[from] = to;
369 self:send_occupant_list(from);
372 self:broadcast_presence(pr, from);
375 self:_route_stanza(pr:tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
376 :tag("item", {affiliation=affiliation or "none", role=role or "none"}):up()
377 :tag("status", {code='110'}));
379 self:send_history(from, stanza);
381 local reply = st.error_reply(stanza, "auth", "forbidden"):up();
382 reply.tags[1].attr.code = "403";
383 origin.send(reply:tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
387 elseif type ~= 'result' then -- bad type
388 if type ~= 'visible' and type ~= 'invisible' then -- COMPAT ejabberd can broadcast or forward XEP-0018 presences
389 origin.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME correct error?
392 elseif not current_nick then -- not in room
393 if type == "error" or type == "result" then
394 local id = stanza.name == "iq" and stanza.attr.id and base64.decode(stanza.attr.id);
395 local _nick, _id, _hash = (id or ""):match("^(.+)%z(.*)%z(.+)$");
396 local occupant = self._occupants[stanza.attr.to];
397 if occupant and _nick and self._jid_nick[_nick] and _id and _hash then
398 local id, _to = stanza.attr.id;
399 for jid in pairs(occupant.sessions) do
400 if md5(jid) == _hash then
406 stanza.attr.to, stanza.attr.from, stanza.attr.id = _to, self._jid_nick[_nick], _id;
407 self:_route_stanza(stanza);
408 stanza.attr.to, stanza.attr.from, stanza.attr.id = to, from, id;
412 origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
414 elseif stanza.name == "message" and type == "groupchat" then -- groupchat messages not allowed in PM
415 origin.send(st.error_reply(stanza, "modify", "bad-request"));
416 elseif current_nick and stanza.name == "message" and type == "error" and is_kickable_error(stanza) then
417 log("debug", "%s kicked from %s for sending an error message", current_nick, self.jid);
418 self:handle_to_occupant(origin, build_unavailable_presence_from_error(stanza)); -- send unavailable
419 else -- private stanza
420 local o_data = self._occupants[to];
422 log("debug", "%s sent private stanza to %s (%s)", from, to, o_data.jid);
423 local jid = o_data.jid;
424 local bare = jid_bare(jid);
425 stanza.attr.to, stanza.attr.from = jid, current_nick;
426 local id = stanza.attr.id;
427 if stanza.name=='iq' and type=='get' and stanza.tags[1].attr.xmlns == 'vcard-temp' and bare ~= jid then
428 stanza.attr.to = bare;
429 stanza.attr.id = base64.encode(jid.."\0"..id.."\0"..md5(from));
431 self:_route_stanza(stanza);
432 stanza.attr.to, stanza.attr.from, stanza.attr.id = to, from, id;
433 elseif type ~= "error" and type ~= "result" then -- recipient not in room
434 origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Recipient not in room"));
439 function room_mt:send_form(origin, stanza)
440 local title = "Configuration for "..self.jid;
441 origin.send(st.reply(stanza):query("http://jabber.org/protocol/muc#owner")
442 :tag("x", {xmlns='jabber:x:data', type='form'})
443 :tag("title"):text(title):up()
444 :tag("instructions"):text(title):up()
445 :tag("field", {type='hidden', var='FORM_TYPE'}):tag("value"):text("http://jabber.org/protocol/muc#roomconfig"):up():up()
446 :tag("field", {type='boolean', label='Make Room Persistent?', var='muc#roomconfig_persistentroom'})
447 :tag("value"):text(self._data.persistent and "1" or "0"):up()
449 :tag("field", {type='boolean', label='Make Room Publicly Searchable?', var='muc#roomconfig_publicroom'})
450 :tag("value"):text(self._data.hidden and "0" or "1"):up()
452 :tag("field", {type='list-single', label='Who May Discover Real JIDs?', var='muc#roomconfig_whois'})
453 :tag("value"):text(self._data.whois or 'moderators'):up()
454 :tag("option", {label = 'Moderators Only'})
455 :tag("value"):text('moderators'):up()
457 :tag("option", {label = 'Anyone'})
458 :tag("value"):text('anyone'):up()
464 local valid_whois = {
469 function room_mt:process_form(origin, stanza)
470 local query = stanza.tags[1];
472 for _, tag in ipairs(query.tags) do if tag.name == "x" and tag.attr.xmlns == "jabber:x:data" then form = tag; break; end end
473 if not form then origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); return; end
474 if form.attr.type == "cancel" then origin.send(st.reply(stanza)); return; end
475 if form.attr.type ~= "submit" then origin.send(st.error_reply(stanza, "cancel", "bad-request")); return; end
477 for _, field in pairs(form.tags) do
478 if field.name == "field" and field.attr.var and field.tags[1].name == "value" and #field.tags[1].tags == 0 then
479 fields[field.attr.var] = field.tags[1][1] or "";
482 if fields.FORM_TYPE ~= "http://jabber.org/protocol/muc#roomconfig" then origin.send(st.error_reply(stanza, "cancel", "bad-request")); return; end
486 local persistent = fields['muc#roomconfig_persistentroom'];
487 if persistent == "0" or persistent == "false" then persistent = nil; elseif persistent == "1" or persistent == "true" then persistent = true;
488 else origin.send(st.error_reply(stanza, "cancel", "bad-request")); return; end
489 dirty = dirty or (self._data.persistent ~= persistent)
490 self._data.persistent = persistent;
491 module:log("debug", "persistent=%s", tostring(persistent));
493 local public = fields['muc#roomconfig_publicroom'];
494 if public == "0" or public == "false" then public = nil; elseif public == "1" or public == "true" then public = true;
495 else origin.send(st.error_reply(stanza, "cancel", "bad-request")); return; end
496 dirty = dirty or (self._data.hidden ~= (not public and true or nil))
497 self._data.hidden = not public and true or nil;
499 local whois = fields['muc#roomconfig_whois'];
500 if not valid_whois[whois] then
501 origin.send(st.error_reply(stanza, 'cancel', 'bad-request'));
504 local whois_changed = self._data.whois ~= whois
505 self._data.whois = whois
506 module:log('debug', 'whois=%s', tostring(whois))
508 if self.save then self:save(true); end
509 origin.send(st.reply(stanza));
511 if dirty or whois_changed then
512 local msg = st.message({type='groupchat', from=self.jid})
513 :tag('x', {xmlns='http://jabber.org/protocol/muc#user'}):up()
516 msg.tags[1]:tag('status', {code = '104'})
518 if whois_changed then
519 local code = (whois == 'moderators') and 173 or 172
520 msg.tags[1]:tag('status', {code = code})
523 self:broadcast_message(msg, false)
527 function room_mt:destroy(newjid, reason, password)
528 local pr = st.presence({type = "unavailable"})
529 :tag("x", {xmlns = "http://jabber.org/protocol/muc#user"})
530 :tag("item", { affiliation='none', role='none' }):up()
531 :tag("destroy", {jid=newjid})
532 if reason then pr:tag("reason"):text(reason):up(); end
533 if password then pr:tag("password"):text(password):up(); end
534 for nick, occupant in pairs(self._occupants) do
536 for jid in pairs(occupant.sessions) do
538 self:_route_stanza(pr);
539 self._jid_nick[jid] = nil;
541 self._occupants[nick] = nil;
543 self._data.persistent = nil;
544 if self.save then self:save(true); end
547 function room_mt:handle_to_room(origin, stanza) -- presence changes and groupchat messages, along with disco/etc
548 local type = stanza.attr.type;
549 local xmlns = stanza.tags[1] and stanza.tags[1].attr.xmlns;
550 if stanza.name == "iq" then
551 if xmlns == "http://jabber.org/protocol/disco#info" and type == "get" then
552 origin.send(self:get_disco_info(stanza));
553 elseif xmlns == "http://jabber.org/protocol/disco#items" and type == "get" then
554 origin.send(self:get_disco_items(stanza));
555 elseif xmlns == "http://jabber.org/protocol/muc#admin" then
556 local actor = stanza.attr.from;
557 local affiliation = self:get_affiliation(actor);
558 local current_nick = self._jid_nick[actor];
559 local role = current_nick and self._occupants[current_nick].role or self:get_default_role(affiliation);
560 local item = stanza.tags[1].tags[1];
561 if item and item.name == "item" then
562 if type == "set" then
563 local callback = function() origin.send(st.reply(stanza)); end
564 if item.attr.jid then -- Validate provided JID
565 item.attr.jid = jid_prep(item.attr.jid);
566 if not item.attr.jid then
567 origin.send(st.error_reply(stanza, "modify", "jid-malformed"));
571 if not item.attr.jid and item.attr.nick then -- COMPAT Workaround for Miranda sending 'nick' instead of 'jid' when changing affiliation
572 local occupant = self._occupants[self.jid.."/"..item.attr.nick];
573 if occupant then item.attr.jid = occupant.jid; end
574 elseif not item.attr.nick and item.attr.jid then
575 local nick = self._jid_nick[item.attr.jid];
576 if nick then item.attr.nick = select(3, jid_split(nick)); end
578 local reason = item.tags[1] and item.tags[1].name == "reason" and #item.tags[1] == 1 and item.tags[1][1];
579 if item.attr.affiliation and item.attr.jid and not item.attr.role then
580 local success, errtype, err = self:set_affiliation(actor, item.attr.jid, item.attr.affiliation, callback, reason);
581 if not success then origin.send(st.error_reply(stanza, errtype, err)); end
582 elseif item.attr.role and item.attr.nick and not item.attr.affiliation then
583 local success, errtype, err = self:set_role(actor, self.jid.."/"..item.attr.nick, item.attr.role, callback, reason);
584 if not success then origin.send(st.error_reply(stanza, errtype, err)); end
586 origin.send(st.error_reply(stanza, "cancel", "bad-request"));
588 elseif type == "get" then
589 local _aff = item.attr.affiliation;
590 local _rol = item.attr.role;
591 if _aff and not _rol then
592 if affiliation == "owner" or (affiliation == "admin" and _aff ~= "owner" and _aff ~= "admin") then
593 local reply = st.reply(stanza):query("http://jabber.org/protocol/muc#admin");
594 for jid, affiliation in pairs(self._affiliations) do
595 if affiliation == _aff then
596 reply:tag("item", {affiliation = _aff, jid = jid}):up();
601 origin.send(st.error_reply(stanza, "auth", "forbidden"));
603 elseif _rol and not _aff then
604 if role == "moderator" then
605 -- TODO allow admins and owners not in room? Provide read-only access to everyone who can see the participants anyway?
606 if _rol == "none" then _rol = nil; end
607 local reply = st.reply(stanza):query("http://jabber.org/protocol/muc#admin");
608 for occupant_jid, occupant in pairs(self._occupants) do
609 if occupant.role == _rol then
611 nick = select(3, jid_split(occupant_jid)),
612 role = _rol or "none",
613 affiliation = occupant.affiliation or "none",
620 origin.send(st.error_reply(stanza, "auth", "forbidden"));
623 origin.send(st.error_reply(stanza, "cancel", "bad-request"));
626 elseif type == "set" or type == "get" then
627 origin.send(st.error_reply(stanza, "cancel", "bad-request"));
629 elseif xmlns == "http://jabber.org/protocol/muc#owner" and (type == "get" or type == "set") and stanza.tags[1].name == "query" then
630 if self:get_affiliation(stanza.attr.from) ~= "owner" then
631 origin.send(st.error_reply(stanza, "auth", "forbidden"));
632 elseif stanza.attr.type == "get" then
633 self:send_form(origin, stanza);
634 elseif stanza.attr.type == "set" then
635 local child = stanza.tags[1].tags[1];
637 origin.send(st.error_reply(stanza, "auth", "bad-request"));
638 elseif child.name == "destroy" then
639 local newjid = child.attr.jid;
640 local reason, password;
641 for _,tag in ipairs(child.tags) do
642 if tag.name == "reason" then
643 reason = #tag.tags == 0 and tag[1];
644 elseif tag.name == "password" then
645 password = #tag.tags == 0 and tag[1];
648 self:destroy(newjid, reason, password);
649 origin.send(st.reply(stanza));
651 self:process_form(origin, stanza);
654 elseif type == "set" or type == "get" then
655 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
657 elseif stanza.name == "message" and type == "groupchat" then
658 local from, to = stanza.attr.from, stanza.attr.to;
659 local room = jid_bare(to);
660 local current_nick = self._jid_nick[from];
661 local occupant = self._occupants[current_nick];
662 if not occupant then -- not in room
663 origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
664 elseif occupant.role == "visitor" then
665 origin.send(st.error_reply(stanza, "cancel", "forbidden"));
667 local from = stanza.attr.from;
668 stanza.attr.from = current_nick;
669 local subject = getText(stanza, {"subject"});
671 if occupant.role == "moderator" then
672 self:set_subject(current_nick, subject); -- TODO use broadcast_message_stanza
674 stanza.attr.from = from;
675 origin.send(st.error_reply(stanza, "cancel", "forbidden"));
678 self:broadcast_message(stanza, true);
680 stanza.attr.from = from;
682 elseif stanza.name == "message" and type == "error" and is_kickable_error(stanza) then
683 local current_nick = self._jid_nick[stanza.attr.from];
684 log("debug", "%s kicked from %s for sending an error message", current_nick, self.jid);
685 self:handle_to_occupant(origin, build_unavailable_presence_from_error(stanza)); -- send unavailable
686 elseif stanza.name == "presence" then -- hack - some buggy clients send presence updates to the room rather than their nick
687 local to = stanza.attr.to;
688 local current_nick = self._jid_nick[stanza.attr.from];
690 stanza.attr.to = current_nick;
691 self:handle_to_occupant(origin, stanza);
693 elseif type ~= "error" and type ~= "result" then
694 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
696 elseif stanza.name == "message" and not stanza.attr.type and #stanza.tags == 1 and self._jid_nick[stanza.attr.from]
697 and stanza.tags[1].name == "x" and stanza.tags[1].attr.xmlns == "http://jabber.org/protocol/muc#user" then
698 local x = stanza.tags[1];
699 local payload = (#x.tags == 1 and x.tags[1]);
700 if payload and payload.name == "invite" and payload.attr.to then
701 local _from, _to = stanza.attr.from, stanza.attr.to;
702 local _invitee = jid_prep(payload.attr.to);
704 local _reason = payload.tags[1] and payload.tags[1].name == 'reason' and #payload.tags[1].tags == 0 and payload.tags[1][1];
705 local invite = st.message({from = _to, to = _invitee, id = stanza.attr.id})
706 :tag('x', {xmlns='http://jabber.org/protocol/muc#user'})
707 :tag('invite', {from=_from})
708 :tag('reason'):text(_reason or ""):up()
710 if self:get_password() then
711 invite:tag("password"):text(self:get_password()):up();
714 :tag('x', {xmlns="jabber:x:conference", jid=_to}) -- COMPAT: Some older clients expect this
717 :tag('body') -- Add a plain message for clients which don't support invites
718 :text(_from..' invited you to the room '.._to..(_reason and (' ('.._reason..')') or ""))
720 self:_route_stanza(invite);
722 origin.send(st.error_reply(stanza, "cancel", "jid-malformed"));
725 origin.send(st.error_reply(stanza, "cancel", "bad-request"));
728 if type == "error" or type == "result" then return; end
729 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
733 function room_mt:handle_stanza(origin, stanza)
734 local to_node, to_host, to_resource = jid_split(stanza.attr.to);
736 self:handle_to_occupant(origin, stanza);
738 self:handle_to_room(origin, stanza);
742 function room_mt:route_stanza(stanza) end -- Replace with a routing function, e.g., function(room, stanza) core_route_stanza(origin, stanza); end
744 function room_mt:get_affiliation(jid)
745 local node, host, resource = jid_split(jid);
746 local bare = node and node.."@"..host or host;
747 local result = self._affiliations[bare]; -- Affiliations are granted, revoked, and maintained based on the user's bare JID.
748 if not result and self._affiliations[host] == "outcast" then result = "outcast"; end -- host banned
751 function room_mt:set_affiliation(actor, jid, affiliation, callback, reason)
753 if affiliation == "none" then affiliation = nil; end
754 if affiliation and affiliation ~= "outcast" and affiliation ~= "owner" and affiliation ~= "admin" and affiliation ~= "member" then
755 return nil, "modify", "not-acceptable";
757 if self:get_affiliation(actor) ~= "owner" then return nil, "cancel", "not-allowed"; end
758 if jid_bare(actor) == jid then return nil, "cancel", "not-allowed"; end
759 self._affiliations[jid] = affiliation;
760 local role = self:get_default_role(affiliation);
761 local p = st.presence()
762 :tag("x", {xmlns = "http://jabber.org/protocol/muc#user"})
763 :tag("item", {affiliation=affiliation or "none", role=role or "none"})
764 :tag("reason"):text(reason or ""):up()
767 local item = x.tags[1];
768 if not role then -- getting kicked
769 p.attr.type = "unavailable";
770 if affiliation == "outcast" then
771 x:tag("status", {code="301"}):up(); -- banned
773 x:tag("status", {code="321"}):up(); -- affiliation change
776 local modified_nicks = {};
777 for nick, occupant in pairs(self._occupants) do
778 if jid_bare(occupant.jid) == jid then
779 if not role then -- getting kicked
780 self._occupants[nick] = nil;
782 t_insert(modified_nicks, nick);
783 occupant.affiliation, occupant.role = affiliation, role;
786 for jid in pairs(occupant.sessions) do -- remove for all sessions of the nick
787 if not role then self._jid_nick[jid] = nil; end
789 self:_route_stanza(p);
793 if self.save then self:save(); end
794 if callback then callback(); end
795 for _, nick in ipairs(modified_nicks) do
797 self:broadcast_except_nick(p, nick);
802 function room_mt:get_role(nick)
803 local session = self._occupants[nick];
804 return session and session.role or nil;
806 function room_mt:set_role(actor, occupant_jid, role, callback, reason)
807 if role == "none" then role = nil; end
808 if role and role ~= "moderator" and role ~= "participant" and role ~= "visitor" then return nil, "modify", "not-acceptable"; end
809 if self:get_affiliation(actor) ~= "owner" then return nil, "cancel", "not-allowed"; end
810 local occupant = self._occupants[occupant_jid];
811 if not occupant then return nil, "modify", "not-acceptable"; end
812 if occupant.affiliation == "owner" or occupant.affiliation == "admin" then return nil, "cancel", "not-allowed"; end
813 local p = st.presence({from = occupant_jid})
814 :tag("x", {xmlns = "http://jabber.org/protocol/muc#user"})
815 :tag("item", {affiliation=occupant.affiliation or "none", nick=select(3, jid_split(occupant_jid)), role=role or "none"})
816 :tag("reason"):text(reason or ""):up()
818 if not role then -- kick
819 p.attr.type = "unavailable";
820 self._occupants[occupant_jid] = nil;
821 for jid in pairs(occupant.sessions) do -- remove for all sessions of the nick
822 self._jid_nick[jid] = nil;
824 p:tag("status", {code = "307"}):up();
826 occupant.role = role;
828 for jid in pairs(occupant.sessions) do -- send to all sessions of the nick
830 self:_route_stanza(p);
832 if callback then callback(); end
833 self:broadcast_except_nick(p, occupant_jid);
837 function room_mt:_route_stanza(stanza)
839 local to_occupant = self._occupants[self._jid_nick[stanza.attr.to]];
840 local from_occupant = self._occupants[stanza.attr.from];
841 if stanza.name == "presence" then
842 if to_occupant and from_occupant then
843 if self._data.whois == 'anyone' then
844 muc_child = stanza:get_child("x", "http://jabber.org/protocol/muc#user");
846 if to_occupant.role == "moderator" or jid_bare(to_occupant.jid) == jid_bare(from_occupant.jid) then
847 muc_child = stanza:get_child("x", "http://jabber.org/protocol/muc#user");
853 for _, item in pairs(muc_child.tags) do
854 if item.name == "item" then
855 if from_occupant == to_occupant then
856 item.attr.jid = stanza.attr.to;
858 item.attr.jid = from_occupant.jid;
862 if self._data.whois == 'anyone' then
863 muc_child:tag('status', { code = '100' });
866 self:route_stanza(stanza);
868 for _, item in pairs(muc_child.tags) do
869 if item.name == "item" then
876 local _M = {}; -- module "muc"
878 function _M.new_room(jid)
879 return setmetatable({
884 whois = 'moderators',