plugins/muc/muc.lib.lua

   1 -- Prosody IM
   2 -- Copyright (C) 2008-2010 Matthew Wild
   3 -- Copyright (C) 2008-2010 Waqas Hussain
   4 -- Copyright (C) 2014 Daurnimator
   5 --
   6 -- This project is MIT/X11 licensed. Please see the
   7 -- COPYING file in the source package for more information.
   8 --
   9
  10 local select = select;
  11 local pairs, ipairs = pairs, ipairs;
  12 local next = next;
  13 local setmetatable = setmetatable;
  14
  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 st = require "util.stanza";
  21 local log = require "util.logger".init("mod_muc");
  22 local base64 = require "util.encodings".base64;
  23 local md5 = require "util.hashes".md5;
  24
  25 local occupant_lib = module:require "muc/occupant"
  26 local muc_util = module:require "muc/util";
  27 local is_kickable_error = muc_util.is_kickable_error;
  28 local valid_roles, valid_affiliations = muc_util.valid_roles, muc_util.valid_affiliations;
  29
  30 local room_mt = {};
  31 room_mt.__index = room_mt;
  32
  33 function room_mt:__tostring()
  34         return "MUC room ("..self.jid..")";
  35 end
  36
  37 function room_mt:get_occupant_jid(real_jid)
  38         return self._jid_nick[real_jid]
  39 end
  40
  41 function room_mt:get_default_role(affiliation)
  42         local role = module:fire_event("muc-get-default-role", {
  43                 room = self;
  44                 affiliation = affiliation;
  45                 affiliation_rank = valid_affiliations[affiliation or "none"];
  46         });
  47         return role, valid_roles[role or "none"];
  48 end
  49 module:hook("muc-get-default-role", function(event)
  50         if event.affiliation_rank >= valid_affiliations.admin then
  51                 return "moderator";
  52         elseif event.affiliation_rank >= valid_affiliations.none then
  53                 return "participant";
  54         end
  55 end);
  56
  57 --- Occupant functions
  58 function room_mt:new_occupant(bare_real_jid, nick)
  59         local occupant = occupant_lib.new(bare_real_jid, nick);
  60         local affiliation = self:get_affiliation(bare_real_jid);
  61         occupant.role = self:get_default_role(affiliation);
  62         return occupant;
  63 end
  64
  65 function room_mt:get_occupant_by_nick(nick)
  66         local occupant = self._occupants[nick];
  67         if occupant == nil then return nil end
  68         return occupant_lib.copy(occupant);
  69 end
  70
  71 do
  72         local function next_copied_occupant(occupants, occupant_jid)
  73                 local next_occupant_jid, raw_occupant = next(occupants, occupant_jid);
  74                 if next_occupant_jid == nil then return nil end
  75                 return next_occupant_jid, occupant_lib.copy(raw_occupant);
  76         end
  77         function room_mt:each_occupant(read_only)
  78                 return next_copied_occupant, self._occupants, nil;
  79         end
  80 end
  81
  82 function room_mt:has_occupant()
  83         return next(self._occupants, nil) ~= nil
  84 end
  85
  86 function room_mt:get_occupant_by_real_jid(real_jid)
  87         local occupant_jid = self:get_occupant_jid(real_jid);
  88         if occupant_jid == nil then return nil end
  89         return self:get_occupant_by_nick(occupant_jid);
  90 end
  91
  92 function room_mt:save_occupant(occupant)
  93         occupant = occupant_lib.copy(occupant); -- So that occupant can be modified more
  94         local id = occupant.nick
  95
  96         -- Need to maintain _jid_nick secondary index
  97         local old_occupant = self._occupants[id];
  98         if old_occupant then
  99                 for real_jid in old_occupant:each_session() do
 100                         self._jid_nick[real_jid] = nil;
 101                 end
 102         end
 103
 104         local has_live_session = false
 105         if occupant.role ~= nil then
 106                 for real_jid, presence in occupant:each_session() do
 107                         if presence.attr.type == nil then
 108                                 has_live_session = true
 109                                 self._jid_nick[real_jid] = occupant.nick;
 110                         end
 111                 end
 112                 if not has_live_session then
 113                         -- Has no live sessions left; they have left the room.
 114                         occupant.role = nil
 115                 end
 116         end
 117         if not has_live_session then
 118                 occupant = nil
 119         end
 120         self._occupants[id] = occupant
 121 end
 122
 123 function room_mt:route_to_occupant(occupant, stanza)
 124         local to = stanza.attr.to;
 125         for jid, pr in occupant:each_session() do
 126                 stanza.attr.to = jid;
 127                 self:route_stanza(stanza);
 128         end
 129         stanza.attr.to = to;
 130 end
 131
 132 -- actor is the attribute table
 133 local function add_item(x, affiliation, role, jid, nick, actor, reason)
 134         x:tag("item", {affiliation = affiliation; role = role; jid = jid; nick = nick;})
 135         if actor then
 136                 x:tag("actor", actor):up()
 137         end
 138         if reason then
 139                 x:tag("reason"):text(reason):up()
 140         end
 141         x:up();
 142         return x
 143 end
 144
 145 -- actor is (real) jid
 146 function room_mt:build_item_list(occupant, x, is_anonymous, nick, actor, reason)
 147         local affiliation = self:get_affiliation(occupant.bare_jid) or "none";
 148         local role = occupant.role or "none";
 149         local actor_attr;
 150         if actor then
 151                 actor_attr = {nick = select(3,jid_split(self:get_occupant_jid(actor)))};
 152         end
 153         if is_anonymous then
 154                 add_item(x, affiliation, role, nil, nick, actor_attr, reason);
 155         else
 156                 if actor_attr then
 157                         actor_attr.jid = actor;
 158                 end
 159                 for real_jid, session in occupant:each_session() do
 160                         add_item(x, affiliation, role, real_jid, nick, actor_attr, reason);
 161                 end
 162         end
 163         return x
 164 end
 165
 166 function room_mt:broadcast_message(stanza)
 167         if module:fire_event("muc-broadcast-message", {room = self, stanza = stanza}) then
 168                 return true;
 169         end
 170         self:broadcast(stanza);
 171         return true;
 172 end
 173
 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)
 180                 end
 181         end
 182 end
 183
 184 local function can_see_real_jids(whois, occupant)
 185         if whois == "anyone" then
 186                 return true;
 187         elseif whois == "moderators" then
 188                 return valid_roles[occupant.role or "none"] >= valid_roles.moderator;
 189         end
 190 end
 191
 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;
 197         if occupant.role ~= nil then
 198                 -- Try to use main jid's presence
 199                 local pr = occupant:get_presence();
 200                 if pr ~= nil then
 201                         base_presence = st.clone(pr);
 202                 end
 203         end
 204         base_presence = base_presence or st.presence {from = occupant.nick; type = "unavailable";};
 205
 206         -- Fire event (before full_p and anon_p are created)
 207         module:fire_event("muc-broadcast-presence", {
 208                 room = self; stanza = base_presence; x = base_x;
 209                 occupant = occupant; nick = nick; actor = actor;
 210                 reason = reason;
 211         });
 212
 213         local function get_presence(is_anonymous)
 214                 local x = st.clone(base_x);
 215                 self:build_item_list(occupant, x, is_anonymous, nick, actor, reason);
 216                 return st.clone(base_presence):add_child(x), x;
 217         end
 218
 219         local full_p, full_x = get_presence(false);
 220
 221         -- Create anon_p lazily
 222         local anon_p, anon_x;
 223         local function get_anon_p()
 224                 if anon_p == nil then
 225                         anon_p, anon_x = get_presence(true);
 226                 end
 227                 return anon_p, anon_x;
 228         end
 229
 230         local whois = self:get_whois();
 231
 232         -- General populance
 233         for nick, n_occupant in self:each_occupant() do
 234                 if nick ~= occupant.nick then
 235                         local pr;
 236                         if can_see_real_jids(whois, n_occupant) or occupant.bare_jid == n_occupant.bare_jid then
 237                                 pr = full_p;
 238                         else
 239                                 pr = get_anon_p();
 240                         end
 241                         self:route_to_occupant(n_occupant, pr);
 242                 end
 243         end
 244
 245         -- Presences for occupant itself
 246         full_x:tag("status", {code = "110";}):up();
 247         if occupant.role == nil then
 248                 -- They get an unavailable
 249                 self:route_to_occupant(occupant, full_p);
 250         else
 251                 -- use their own presences as templates
 252                 for full_jid, pr in occupant:each_session() do
 253                         pr = st.clone(pr);
 254                         pr.attr.to = full_jid;
 255                         -- You can always see your own full jids
 256                         pr:add_child(full_x);
 257                         self:route_stanza(pr);
 258                 end
 259         end
 260 end
 261
 262 function room_mt:send_occupant_list(to, filter)
 263         local to_bare = jid_bare(to);
 264         local is_anonymous = false;
 265         local whois = self:get_whois();
 266         if whois ~= "anyone" then
 267                 local affiliation = self:get_affiliation(to);
 268                 if affiliation ~= "admin" and affiliation ~= "owner" then
 269                         local occupant = self:get_occupant_by_real_jid(to);
 270                         if not (occupant and can_see_real_jids(whois, occupant)) then
 271                                 is_anonymous = true;
 272                         end
 273                 end
 274         end
 275         for occupant_jid, occupant in self:each_occupant() do
 276                 if filter == nil or filter(occupant_jid, occupant) then
 277                         local x = st.stanza("x", {xmlns='http://jabber.org/protocol/muc#user'});
 278                         self:build_item_list(occupant, x, is_anonymous and to_bare ~= occupant.bare_jid); -- can always see your own jids
 279                         local pres = st.clone(occupant:get_presence());
 280                         pres.attr.to = to;
 281                         pres:add_child(x);
 282                         self:route_stanza(pres);
 283                 end
 284         end
 285 end
 286
 287 function room_mt:get_disco_info(stanza)
 288         local reply = st.reply(stanza):query("http://jabber.org/protocol/disco#info");
 289         local form = dataform.new {
 290                 { name = "FORM_TYPE", type = "hidden", value = "http://jabber.org/protocol/muc#roominfo" };
 291         };
 292         module:fire_event("muc-disco#info", {room = self; reply = reply; form = form;});
 293         reply:add_child(form:form(nil, "result"));
 294         return reply;
 295 end
 296 module:hook("muc-disco#info", function(event)
 297         event.reply:tag("feature", {var = "http://jabber.org/protocol/muc"}):up();
 298 end);
 299 module:hook("muc-disco#info", function(event)
 300         local count = iterators.count(event.room:each_occupant());
 301         table.insert(event.form, { name = "muc#roominfo_occupants", label = "Number of occupants", value = tostring(count) });
 302 end);
 303
 304 function room_mt:get_disco_items(stanza)
 305         local reply = st.reply(stanza):query("http://jabber.org/protocol/disco#items");
 306         for room_jid in self:each_occupant() do
 307                 reply:tag("item", {jid = room_jid, name = room_jid:match("/(.*)")}):up();
 308         end
 309         return reply;
 310 end
 311
 312 function room_mt:handle_kickable(origin, stanza)
 313         local real_jid = stanza.attr.from;
 314         local occupant = self:get_occupant_by_real_jid(real_jid);
 315         if occupant == nil then return nil; end
 316         local type, condition, text = stanza:get_error();
 317         local error_message = "Kicked: "..(condition and condition:gsub("%-", " ") or "presence error");
 318         if text then
 319                 error_message = error_message..": "..text;
 320         end
 321         occupant:set_session(real_jid, st.presence({type="unavailable"})
 322                 :tag('status'):text(error_message));
 323         self:save_occupant(occupant);
 324         local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";})
 325                 :tag("status", {code = "307"})
 326         self:publicise_occupant_status(occupant, x);
 327         return true;
 328 end
 329
 330 -- Give the room creator owner affiliation
 331 module:hook("muc-room-pre-create", function(event)
 332         event.room:set_affiliation(true, jid_bare(event.stanza.attr.from), "owner");
 333 end, -1);
 334
 335 -- check if user is banned
 336 module:hook("muc-occupant-pre-join", function(event)
 337         local room, stanza = event.room, event.stanza;
 338         local affiliation = room:get_affiliation(stanza.attr.from);
 339         if affiliation == "outcast" then
 340                 local reply = st.error_reply(stanza, "auth", "forbidden"):up();
 341                 reply.tags[1].attr.code = "403";
 342                 event.origin.send(reply:tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
 343                 return true;
 344         end
 345 end, -10);
 346
 347 function room_mt:handle_presence_to_occupant(origin, stanza)
 348         local type = stanza.attr.type;
 349         if type == "error" then -- error, kick em out!
 350                 return self:handle_kickable(origin, stanza)
 351         elseif type == nil or type == "unavailable" then
 352                 local real_jid = stanza.attr.from;
 353                 local bare_jid = jid_bare(real_jid);
 354                 local orig_occupant, dest_occupant;
 355                 local is_new_room = next(self._affiliations) == nil;
 356                 if is_new_room then
 357                         if type == "unavailable" then return true; end -- Unavailable from someone not in the room
 358                         if module:fire_event("muc-room-pre-create", {
 359                                         room = self;
 360                                         origin = origin;
 361                                         stanza = stanza;
 362                                 }) then return true; end
 363                 else
 364                         orig_occupant = self:get_occupant_by_real_jid(real_jid);
 365                         if type == "unavailable" and orig_occupant == nil then return true; end -- Unavailable from someone not in the room
 366                 end
 367                 local is_first_dest_session;
 368                 if type == "unavailable" then
 369                         -- dest_occupant = nil
 370                 elseif orig_occupant and orig_occupant.nick == stanza.attr.to then -- Just a presence update
 371                         log("debug", "presence update for %s from session %s", orig_occupant.nick, real_jid);
 372                         dest_occupant = orig_occupant;
 373                 else
 374                         local dest_jid = stanza.attr.to;
 375                         dest_occupant = self:get_occupant_by_nick(dest_jid);
 376                         if dest_occupant == nil then
 377                                 log("debug", "no occupant found for %s; creating new occupant object for %s", dest_jid, real_jid);
 378                                 is_first_dest_session = true;
 379                                 dest_occupant = self:new_occupant(bare_jid, dest_jid);
 380                         else
 381                                 is_first_dest_session = false;
 382                         end
 383                 end
 384                 local is_last_orig_session;
 385                 if orig_occupant ~= nil then
 386                         -- Is there are least 2 sessions?
 387                         local iter, ob, last = orig_occupant:each_session();
 388                         is_last_orig_session = iter(ob, iter(ob, last)) == nil;
 389                 end
 390
 391                 local event, event_name = {
 392                         room = self;
 393                         origin = origin;
 394                         stanza = stanza;
 395                         is_first_session = is_first_dest_session;
 396                         is_last_session = is_last_orig_session;
 397                 };
 398                 if orig_occupant == nil then
 399                         event_name = "muc-occupant-pre-join";
 400                         event.is_new_room = is_new_room;
 401                         event.occupant = dest_occupant;
 402                 elseif dest_occupant == nil then
 403                         event_name = "muc-occupant-pre-leave";
 404                         event.occupant = orig_occupant;
 405                 else
 406                         event_name = "muc-occupant-pre-change";
 407                         event.orig_occupant = orig_occupant;
 408                         event.dest_occupant = dest_occupant;
 409                 end
 410                 if module:fire_event(event_name, event) then return true; end
 411
 412                 -- Check for nick conflicts
 413                 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
 414                         log("debug", "%s couldn't join due to nick conflict: %s", real_jid, dest_occupant.nick);
 415                         local reply = st.error_reply(stanza, "cancel", "conflict"):up();
 416                         reply.tags[1].attr.code = "409";
 417                         origin.send(reply:tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
 418                         return true;
 419                 end
 420
 421                 -- Send presence stanza about original occupant
 422                 if orig_occupant ~= nil and orig_occupant ~= dest_occupant then
 423                         local orig_x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";});
 424                         local dest_nick;
 425                         if dest_occupant == nil then -- Session is leaving
 426                                 log("debug", "session %s is leaving occupant %s", real_jid, orig_occupant.nick);
 427                                 if is_last_orig_session then
 428                                         orig_occupant.role = nil;
 429                                 end
 430                                 orig_occupant:set_session(real_jid, stanza);
 431                         else
 432                                 log("debug", "session %s is changing from occupant %s to %s", real_jid, orig_occupant.nick, dest_occupant.nick);
 433                                 local generated_unavail = st.presence {from = orig_occupant.nick, to = real_jid, type = "unavailable"};
 434                                 orig_occupant:set_session(real_jid, generated_unavail);
 435                                 dest_nick = select(3, jid_split(dest_occupant.nick));
 436                                 if not is_first_dest_session then -- User is swapping into another pre-existing session
 437                                         log("debug", "session %s is swapping into multisession %s, showing it leave.", real_jid, dest_occupant.nick);
 438                                         -- Show the other session leaving
 439                                         local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";})
 440                                                 :tag("status"):text("you are joining pre-existing session " .. dest_nick):up();
 441                                         add_item(x, self:get_affiliation(bare_jid), "none");
 442                                         local pr = st.presence{from = dest_occupant.nick, to = real_jid, type = "unavailable"}
 443                                                 :add_child(x);
 444                                         self:route_stanza(pr);
 445                                 end
 446                                 if is_first_dest_session and is_last_orig_session then -- Normal nick change
 447                                         log("debug", "no sessions in %s left; publically marking as nick change", orig_occupant.nick);
 448                                         orig_x:tag("status", {code = "303";}):up();
 449                                 else -- The session itself always needs to see a nick change
 450                                         -- don't want to get our old nick's available presence,
 451                                         -- so remove our session from there, and manually generate an unavailable
 452                                         orig_occupant:remove_session(real_jid);
 453                                         log("debug", "generating nick change for %s", real_jid);
 454                                         local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";});
 455                                         -- self:build_item_list(orig_occupant, x, false, dest_nick); -- COMPAT: clients get confused if they see other items besides their own
 456                                         add_item(x, self:get_affiliation(bare_jid), orig_occupant.role, real_jid, dest_nick);
 457                                         x:tag("status", {code = "303";}):up();
 458                                         x:tag("status", {code = "110";}):up();
 459                                         self:route_stanza(generated_unavail:add_child(x));
 460                                         dest_nick = nil; -- set dest_nick to nil; so general populance doesn't see it for whole orig_occupant
 461                                 end
 462                         end
 463                         self:save_occupant(orig_occupant);
 464                         self:publicise_occupant_status(orig_occupant, orig_x, dest_nick);
 465
 466                         if is_last_orig_session then
 467                                 module:fire_event("muc-occupant-left", {room = self; nick = orig_occupant.nick; occupant = orig_occupant;});
 468                         end
 469                 end
 470
 471                 if dest_occupant ~= nil then
 472                         dest_occupant:set_session(real_jid, stanza);
 473                         local dest_x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";});
 474                         if is_new_room then
 475                                 dest_x:tag("status", {code = "201"}):up();
 476                         end
 477                         if orig_occupant == nil and self:get_whois() == "anyone" then
 478                                 dest_x:tag("status", {code = "100"}):up();
 479                         end
 480                         self:save_occupant(dest_occupant);
 481
 482                         if orig_occupant == nil then
 483                                 -- Send occupant list to newly joined user
 484                                 self:send_occupant_list(real_jid, function(nick, occupant)
 485                                         -- Don't include self
 486                                         return occupant:get_presence(real_jid) == nil;
 487                                 end)
 488                         end
 489                         self:publicise_occupant_status(dest_occupant, dest_x);
 490
 491                         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
 492                                 log("debug", "session %s split nicks; showing %s rejoining", real_jid, orig_occupant.nick);
 493                                 -- Show the original nick joining again
 494                                 local pr = st.clone(orig_occupant:get_presence());
 495                                 pr.attr.to = real_jid;
 496                                 local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";});
 497                                 self:build_item_list(orig_occupant, x, false);
 498                                 -- TODO: new status code to inform client this was the multi-session it left?
 499                                 pr:add_child(x);
 500                                 self:route_stanza(pr);
 501                         end
 502
 503                         if orig_occupant == nil then
 504                                 if is_first_dest_session then
 505                                         module:fire_event("muc-occupant-joined", {room = self; nick = dest_occupant.nick; occupant = dest_occupant;});
 506                                 end
 507                                 module:fire_event("muc-occupant-session-new", {room = self; nick = dest_occupant.nick; occupant = dest_occupant; stanza = stanza; jid = real_jid;});
 508                         end
 509                 end
 510         elseif type ~= 'result' then -- bad type
 511                 if type ~= 'visible' and type ~= 'invisible' then -- COMPAT ejabberd can broadcast or forward XEP-0018 presences
 512                         origin.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME correct error?
 513                 end
 514         end
 515         return true;
 516 end
 517
 518 function room_mt:handle_iq_to_occupant(origin, stanza)
 519         local from, to = stanza.attr.from, stanza.attr.to;
 520         local type = stanza.attr.type;
 521         local id = stanza.attr.id;
 522         local occupant = self:get_occupant_by_nick(to);
 523         if (type == "error" or type == "result") then
 524                 do -- deconstruct_stanza_id
 525                         if not occupant then return nil; end
 526                         local from_jid, id, to_jid_hash = (base64.decode(stanza.attr.id) or ""):match("^(.+)%z(.*)%z(.+)$");
 527                         if not(from == from_jid or from == jid_bare(from_jid)) then return nil; end
 528                         local from_occupant_jid = self:get_occupant_jid(from_jid);
 529                         if from_occupant_jid == nil then return nil; end
 530                         local session_jid
 531                         for to_jid in occupant:each_session() do
 532                                 if md5(to_jid) == to_jid_hash then
 533                                         session_jid = to_jid;
 534                                         break;
 535                                 end
 536                         end
 537                         if session_jid == nil then return nil; end
 538                         stanza.attr.from, stanza.attr.to, stanza.attr.id = from_occupant_jid, session_jid, id;
 539                 end
 540                 log("debug", "%s sent private iq stanza to %s (%s)", from, to, stanza.attr.to);
 541                 self:route_stanza(stanza);
 542                 stanza.attr.from, stanza.attr.to, stanza.attr.id = from, to, id;
 543                 return true;
 544         else -- Type is "get" or "set"
 545                 local current_nick = self:get_occupant_jid(from);
 546                 if not current_nick then
 547                         origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
 548                         return true;
 549                 end
 550                 if not occupant then -- recipient not in room
 551                         origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Recipient not in room"));
 552                         return true;
 553                 end
 554                 do -- construct_stanza_id
 555                         stanza.attr.id = base64.encode(occupant.jid.."\0"..stanza.attr.id.."\0"..md5(from));
 556                 end
 557                 stanza.attr.from, stanza.attr.to = current_nick, occupant.jid;
 558                 log("debug", "%s sent private iq stanza to %s (%s)", from, to, occupant.jid);
 559                 if stanza.tags[1].attr.xmlns == 'vcard-temp' then
 560                         stanza.attr.to = jid_bare(stanza.attr.to);
 561                 end
 562                 self:route_stanza(stanza);
 563                 stanza.attr.from, stanza.attr.to, stanza.attr.id = from, to, id;
 564                 return true;
 565         end
 566 end
 567
 568 function room_mt:handle_message_to_occupant(origin, stanza)
 569         local from, to = stanza.attr.from, stanza.attr.to;
 570         local current_nick = self:get_occupant_jid(from);
 571         local type = stanza.attr.type;
 572         if not current_nick then -- not in room
 573                 if type ~= "error" then
 574                         origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
 575                 end
 576                 return true;
 577         end
 578         if type == "groupchat" then -- groupchat messages not allowed in PM
 579                 origin.send(st.error_reply(stanza, "modify", "bad-request"));
 580                 return true;
 581         elseif type == "error" and is_kickable_error(stanza) then
 582                 log("debug", "%s kicked from %s for sending an error message", current_nick, self.jid);
 583                 return self:handle_kickable(origin, stanza); -- send unavailable
 584         end
 585
 586         local o_data = self:get_occupant_by_nick(to);
 587         if not o_data then
 588                 origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Recipient not in room"));
 589                 return true;
 590         end
 591         log("debug", "%s sent private message stanza to %s (%s)", from, to, o_data.jid);
 592         stanza:tag("x", { xmlns = "http://jabber.org/protocol/muc#user" }):up();
 593         stanza.attr.from = current_nick;
 594         self:route_to_occupant(o_data, stanza)
 595         -- TODO: Remove x tag?
 596         stanza.attr.from = from;
 597         return true;
 598 end
 599
 600 function room_mt:send_form(origin, stanza)
 601         origin.send(st.reply(stanza):query("http://jabber.org/protocol/muc#owner")
 602                 :add_child(self:get_form_layout(stanza.attr.from):form())
 603         );
 604 end
 605
 606 function room_mt:get_form_layout(actor)
 607         local form = dataform.new({
 608                 title = "Configuration for "..self.jid,
 609                 instructions = "Complete and submit this form to configure the room.",
 610                 {
 611                         name = 'FORM_TYPE',
 612                         type = 'hidden',
 613                         value = 'http://jabber.org/protocol/muc#roomconfig'
 614                 }
 615         });
 616         return module:fire_event("muc-config-form", { room = self, actor = actor, form = form }) or form;
 617 end
 618
 619 function room_mt:process_form(origin, stanza)
 620         local form = stanza.tags[1]:get_child("x", "jabber:x:data");
 621         if form.attr.type == "cancel" then
 622                 origin.send(st.reply(stanza));
 623         elseif form.attr.type == "submit" then
 624                 local fields;
 625                 if form.tags[1] == nil then -- Instant room
 626                         fields = {};
 627                 else
 628                         fields = self:get_form_layout(stanza.attr.from):data(form);
 629                         if fields.FORM_TYPE ~= "http://jabber.org/protocol/muc#roomconfig" then
 630                                 origin.send(st.error_reply(stanza, "cancel", "bad-request", "Form is not of type room configuration"));
 631                                 return true;
 632                         end
 633                 end
 634
 635                 local event = {room = self; origin = origin; stanza = stanza; fields = fields; status_codes = {};};
 636                 function event.update_option(name, field, allowed)
 637                         local new = fields[field];
 638                         if new == nil then return; end
 639                         if allowed and not allowed[new] then return; end
 640                         if new == self["get_"..name](self) then return; end
 641                         event.status_codes["104"] = true;
 642                         self["set_"..name](self, new);
 643                         return true;
 644                 end
 645                 module:fire_event("muc-config-submitted", event);
 646
 647                 if self.save then self:save(true); end
 648                 origin.send(st.reply(stanza));
 649
 650                 if next(event.status_codes) then
 651                         local msg = st.message({type='groupchat', from=self.jid})
 652                                 :tag('x', {xmlns='http://jabber.org/protocol/muc#user'})
 653                         for code in pairs(event.status_codes) do
 654                                 msg:tag("status", {code = code;}):up();
 655                         end
 656                         msg:up();
 657                         self:broadcast_message(msg);
 658                 end
 659         else
 660                 origin.send(st.error_reply(stanza, "cancel", "bad-request", "Not a submitted form"));
 661         end
 662         return true;
 663 end
 664
 665 -- Removes everyone from the room
 666 function room_mt:clear(x)
 667         x = x or st.stanza("x", {xmlns='http://jabber.org/protocol/muc#user'});
 668         local occupants_updated = {};
 669         for nick, occupant in self:each_occupant() do
 670                 occupant.role = nil;
 671                 self:save_occupant(occupant);
 672                 occupants_updated[occupant] = true;
 673         end
 674         for occupant in pairs(occupants_updated) do
 675                 self:publicise_occupant_status(occupant, x);
 676                 module:fire_event("muc-occupant-left", { room = self; nick = occupant.nick; occupant = occupant;});
 677         end
 678 end
 679
 680 function room_mt:destroy(newjid, reason, password)
 681         local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user"})
 682                 :tag("item", { affiliation='none', role='none' }):up()
 683                 :tag("destroy", {jid=newjid});
 684         if reason then x:tag("reason"):text(reason):up(); end
 685         if password then x:tag("password"):text(password):up(); end
 686         x:up();
 687         self:clear(x);
 688         module:fire_event("muc-room-destroyed", { room = self });
 689 end
 690
 691 function room_mt:handle_disco_info_get_query(origin, stanza)
 692         origin.send(self:get_disco_info(stanza));
 693         return true;
 694 end
 695
 696 function room_mt:handle_disco_items_get_query(origin, stanza)
 697         origin.send(self:get_disco_items(stanza));
 698         return true;
 699 end
 700
 701 function room_mt:handle_admin_query_set_command(origin, stanza)
 702         local item = stanza.tags[1].tags[1];
 703         if item.attr.jid then -- Validate provided JID
 704                 item.attr.jid = jid_prep(item.attr.jid);
 705                 if not item.attr.jid then
 706                         origin.send(st.error_reply(stanza, "modify", "jid-malformed"));
 707                         return true;
 708                 end
 709         end
 710         if not item.attr.jid and item.attr.nick then -- COMPAT Workaround for Miranda sending 'nick' instead of 'jid' when changing affiliation
 711                 local occupant = self:get_occupant_by_nick(self.jid.."/"..item.attr.nick);
 712                 if occupant then item.attr.jid = occupant.jid; end
 713         elseif not item.attr.nick and item.attr.jid then
 714                 local nick = self:get_occupant_jid(item.attr.jid);
 715                 if nick then item.attr.nick = select(3, jid_split(nick)); end
 716         end
 717         local actor = stanza.attr.from;
 718         local reason = item:get_child_text("reason");
 719         local success, errtype, err
 720         if item.attr.affiliation and item.attr.jid and not item.attr.role then
 721                 success, errtype, err = self:set_affiliation(actor, item.attr.jid, item.attr.affiliation, reason);
 722         elseif item.attr.role and item.attr.nick and not item.attr.affiliation then
 723                 success, errtype, err = self:set_role(actor, self.jid.."/"..item.attr.nick, item.attr.role, reason);
 724         else
 725                 success, errtype, err = nil, "cancel", "bad-request";
 726         end
 727         if not success then origin.send(st.error_reply(stanza, errtype, err)); end
 728         origin.send(st.reply(stanza));
 729         return true;
 730 end
 731
 732 function room_mt:handle_admin_query_get_command(origin, stanza)
 733         local actor = stanza.attr.from;
 734         local affiliation = self:get_affiliation(actor);
 735         local item = stanza.tags[1].tags[1];
 736         local _aff = item.attr.affiliation;
 737         local _rol = item.attr.role;
 738         if _aff and not _rol then
 739                 if affiliation == "owner" or (affiliation == "admin" and _aff ~= "owner" and _aff ~= "admin") then
 740                         local reply = st.reply(stanza):query("http://jabber.org/protocol/muc#admin");
 741                         for jid, affiliation in pairs(self._affiliations) do
 742                                 if affiliation == _aff then
 743                                         reply:tag("item", {affiliation = _aff, jid = jid}):up();
 744                                 end
 745                         end
 746                         origin.send(reply);
 747                         return true;
 748                 else
 749                         origin.send(st.error_reply(stanza, "auth", "forbidden"));
 750                         return true;
 751                 end
 752         elseif _rol and not _aff then
 753                 local role = self:get_role(self:get_occupant_jid(actor)) or self:get_default_role(affiliation);
 754                 if valid_roles[role or "none"] >= valid_roles.moderator then
 755                         if _rol == "none" then _rol = nil; end
 756                         local reply = st.reply(stanza):query("http://jabber.org/protocol/muc#admin");
 757                         -- TODO: whois check here? (though fully anonymous rooms are not supported)
 758                         for occupant_jid, occupant in self:each_occupant() do
 759                                 if occupant.role == _rol then
 760                                         local nick = select(3,jid_split(occupant_jid));
 761                                         self:build_item_list(occupant, reply, false, nick);
 762                                 end
 763                         end
 764                         origin.send(reply:up());
 765                         return true;
 766                 else
 767                         origin.send(st.error_reply(stanza, "auth", "forbidden"));
 768                         return true;
 769                 end
 770         else
 771                 origin.send(st.error_reply(stanza, "cancel", "bad-request"));
 772                 return true;
 773         end
 774 end
 775
 776 function room_mt:handle_owner_query_get_to_room(origin, stanza)
 777         if self:get_affiliation(stanza.attr.from) ~= "owner" then
 778                 origin.send(st.error_reply(stanza, "auth", "forbidden", "Only owners can configure rooms"));
 779                 return true;
 780         end
 781
 782         self:send_form(origin, stanza);
 783         return true;
 784 end
 785 function room_mt:handle_owner_query_set_to_room(origin, stanza)
 786         if self:get_affiliation(stanza.attr.from) ~= "owner" then
 787                 origin.send(st.error_reply(stanza, "auth", "forbidden", "Only owners can configure rooms"));
 788                 return true;
 789         end
 790
 791         local child = stanza.tags[1].tags[1];
 792         if not child then
 793                 origin.send(st.error_reply(stanza, "modify", "bad-request"));
 794                 return true;
 795         elseif child.name == "destroy" then
 796                 local newjid = child.attr.jid;
 797                 local reason = child:get_child_text("reason");
 798                 local password = child:get_child_text("password");
 799                 self:destroy(newjid, reason, password);
 800                 origin.send(st.reply(stanza));
 801                 return true;
 802         elseif child.name == "x" and child.attr.xmlns == "jabber:x:data" then
 803                 return self:process_form(origin, stanza);
 804         else
 805                 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
 806                 return true;
 807         end
 808 end
 809
 810 function room_mt:handle_groupchat_to_room(origin, stanza)
 811         local from = stanza.attr.from;
 812         local occupant = self:get_occupant_by_real_jid(from);
 813         if module:fire_event("muc-occupant-groupchat", {
 814                 room = self; origin = origin; stanza = stanza; from = from; occupant = occupant;
 815         }) then return true; end
 816         stanza.attr.from = occupant.nick;
 817         self:broadcast_message(stanza);
 818         stanza.attr.from = from;
 819         return true;
 820 end
 821
 822 -- Role check
 823 module:hook("muc-occupant-groupchat", function(event)
 824         local role_rank = valid_roles[event.occupant and event.occupant.role or "none"];
 825         if role_rank <= valid_roles.none then
 826                 event.origin.send(st.error_reply(event.stanza, "cancel", "not-acceptable"));
 827                 return true;
 828         elseif role_rank <= valid_roles.visitor then
 829                 event.origin.send(st.error_reply(event.stanza, "auth", "forbidden"));
 830                 return true;
 831         end
 832 end, 50);
 833
 834 -- hack - some buggy clients send presence updates to the room rather than their nick
 835 function room_mt:handle_presence_to_room(origin, stanza)
 836         local current_nick = self:get_occupant_jid(stanza.attr.from);
 837         local handled
 838         if current_nick then
 839                 local to = stanza.attr.to;
 840                 stanza.attr.to = current_nick;
 841                 handled = self:handle_presence_to_occupant(origin, stanza);
 842                 stanza.attr.to = to;
 843         end
 844         return handled;
 845 end
 846
 847 -- Need visitor role or higher to invite
 848 module:hook("muc-pre-invite", function(event)
 849         local room, stanza = event.room, event.stanza;
 850         local _from, _to = stanza.attr.from, stanza.attr.to;
 851         local inviter = room:get_occupant_by_real_jid(_from);
 852         local role = inviter and inviter.role or room:get_default_role(room:get_affiliation(_from));
 853         if valid_roles[role or "none"] <= valid_roles.visitor then
 854                 event.origin.send(st.error_reply(stanza, "auth", "forbidden"));
 855                 return true;
 856         end
 857 end);
 858
 859 function room_mt:handle_mediated_invite(origin, stanza)
 860         local payload = stanza:get_child("x", "http://jabber.org/protocol/muc#user"):get_child("invite");
 861         local invitee = jid_prep(payload.attr.to);
 862         if not invitee then
 863                 origin.send(st.error_reply(stanza, "cancel", "jid-malformed"));
 864                 return true;
 865         elseif module:fire_event("muc-pre-invite", {room = self, origin = origin, stanza = stanza}) then
 866                 return true;
 867         end
 868         local invite = muc_util.filter_muc_x(st.clone(stanza));
 869         invite.attr.from = self.jid;
 870         invite.attr.to = invitee;
 871         invite:tag('x', {xmlns='http://jabber.org/protocol/muc#user'})
 872                         :tag('invite', {from = stanza.attr.from;})
 873                                 :tag('reason'):text(payload:get_child_text("reason")):up()
 874                         :up()
 875                 :up();
 876         if not module:fire_event("muc-invite", {room = self, stanza = invite, origin = origin, incoming = stanza}) then
 877                 self:route_stanza(invite);
 878         end
 879         return true;
 880 end
 881
 882 -- COMPAT: Some older clients expect this
 883 module:hook("muc-invite", function(event)
 884         local room, stanza = event.room, event.stanza;
 885         local invite = stanza:get_child("x", "http://jabber.org/protocol/muc#user"):get_child("invite");
 886         local reason = invite:get_child_text("reason");
 887         stanza:tag('x', {xmlns = "jabber:x:conference"; jid = room.jid;})
 888                 :text(reason or "")
 889         :up();
 890 end);
 891
 892 -- Add a plain message for clients which don't support invites
 893 module:hook("muc-invite", function(event)
 894         local room, stanza = event.room, event.stanza;
 895         if not stanza:get_child("body") then
 896                 local invite = stanza:get_child("x", "http://jabber.org/protocol/muc#user"):get_child("invite");
 897                 local reason = invite:get_child_text("reason") or "";
 898                 stanza:tag("body")
 899                         :text(invite.attr.from.." invited you to the room "..room.jid..(reason == "" and (" ("..reason..")") or ""))
 900                 :up();
 901         end
 902 end);
 903
 904 function room_mt:handle_mediated_decline(origin, stanza)
 905         local payload = stanza:get_child("x", "http://jabber.org/protocol/muc#user"):get_child("decline");
 906         local declinee = jid_prep(payload.attr.to);
 907         if not declinee then
 908                 origin.send(st.error_reply(stanza, "cancel", "jid-malformed"));
 909                 return true;
 910         elseif module:fire_event("muc-pre-decline", {room = self, origin = origin, stanza = stanza}) then
 911                 return true;
 912         end
 913         local decline = muc_util.filter_muc_x(st.clone(stanza));
 914         decline.attr.from = self.jid;
 915         decline.attr.to = declinee;
 916         decline:tag("x", {xmlns = "http://jabber.org/protocol/muc#user"})
 917                         :tag("decline", {from = stanza.attr.from})
 918                                 :tag("reason"):text(payload:get_child_text("reason")):up()
 919                         :up()
 920                 :up();
 921         if not module:fire_event("muc-decline", {room = self, stanza = decline, origin = origin, incoming = stanza}) then
 922                 local declinee = decline.attr.to; -- re-fetch, in case event modified it
 923                 local occupant
 924                 if jid_bare(declinee) == self.jid then -- declinee jid is already an in-room jid
 925                         occupant = self:get_occupant_by_nick(declinee);
 926                 end
 927                 if occupant then
 928                         self:route_to_occupant(occupant, decline);
 929                 else
 930                         self:route_stanza(decline);
 931                 end
 932         end
 933         return true;
 934 end
 935
 936 -- Add a plain message for clients which don't support declines
 937 module:hook("muc-decline", function(event)
 938         local room, stanza = event.room, event.stanza;
 939         if not stanza:get_child("body") then
 940                 local decline = stanza:get_child("x", "http://jabber.org/protocol/muc#user"):get_child("decline");
 941                 local reason = decline:get_child_text("reason") or "";
 942                 stanza:tag("body")
 943                         :text(decline.attr.from.." declined your invite to the room "..room.jid..(reason == "" and (" ("..reason..")") or ""))
 944                 :up();
 945         end
 946 end);
 947
 948 function room_mt:handle_message_to_room(origin, stanza)
 949         local type = stanza.attr.type;
 950         if type == "groupchat" then
 951                 return self:handle_groupchat_to_room(origin, stanza)
 952         elseif type == "error" and is_kickable_error(stanza) then
 953                 return self:handle_kickable(origin, stanza)
 954         elseif type == nil then
 955                 local x = stanza:get_child("x", "http://jabber.org/protocol/muc#user");
 956                 if x then
 957                         local payload = x.tags[1];
 958                         if payload == nil then
 959                                 -- fallthrough
 960                         elseif payload.name == "invite" and payload.attr.to then
 961                                 return self:handle_mediated_invite(origin, stanza)
 962                         elseif payload.name == "decline" and payload.attr.to then
 963                                 return self:handle_mediated_decline(origin, stanza)
 964                         end
 965                         origin.send(st.error_reply(stanza, "cancel", "bad-request"));
 966                         return true;
 967                 end
 968         end
 969 end
 970
 971 function room_mt:route_stanza(stanza)
 972         module:send(stanza);
 973 end
 974
 975 function room_mt:get_affiliation(jid)
 976         local node, host, resource = jid_split(jid);
 977         local bare = node and node.."@"..host or host;
 978         local result = self._affiliations[bare]; -- Affiliations are granted, revoked, and maintained based on the user's bare JID.
 979         if not result and self._affiliations[host] == "outcast" then result = "outcast"; end -- host banned
 980         return result;
 981 end
 982
 983 function room_mt:set_affiliation(actor, jid, affiliation, reason)
 984         if not actor then return nil, "modify", "not-acceptable"; end;
 985
 986         jid = jid_bare(jid);
 987
 988         if valid_affiliations[affiliation or "none"] == nil then
 989                 return nil, "modify", "not-acceptable";
 990         end
 991         affiliation = affiliation ~= "none" and affiliation or nil; -- coerces `affiliation == false` to `nil`
 992
 993         local target_affiliation = self._affiliations[jid]; -- Raw; don't want to check against host
 994         local is_downgrade = valid_affiliations[target_affiliation or "none"] > valid_affiliations[affiliation or "none"];
 995
 996         if actor ~= true then
 997                 local actor_affiliation = self:get_affiliation(actor);
 998                 if actor_affiliation == "owner" then
 999                         if jid_bare(actor) == jid then -- self change
1000                                 -- need at least one owner
1001                                 local is_last = true;
1002                                 for j, aff in pairs(self._affiliations) do if j ~= jid and aff == "owner" then is_last = false; break; end end
1003                                 if is_last then
1004                                         return nil, "cancel", "conflict";
1005                                 end
1006                         end
1007                         -- owners can do anything else
1008                 elseif affiliation == "owner" or affiliation == "admin"
1009                         or actor_affiliation ~= "admin"
1010                         or target_affiliation == "owner" or target_affiliation == "admin" then
1011                         -- Can't demote owners or other admins
1012                         return nil, "cancel", "not-allowed";
1013                 end
1014         end
1015
1016         -- Set in 'database'
1017         self._affiliations[jid] = affiliation;
1018
1019         -- Update roles
1020         local role = self:get_default_role(affiliation);
1021         local role_rank = valid_roles[role or "none"];
1022         local occupants_updated = {}; -- Filled with old roles
1023         for nick, occupant in self:each_occupant() do
1024                 if occupant.bare_jid == jid then
1025                         -- need to publcize in all cases; as affiliation in <item/> has changed.
1026                         occupants_updated[occupant] = occupant.role;
1027                         if occupant.role ~= role and (
1028                                 is_downgrade or
1029                                 valid_roles[occupant.role or "none"] < role_rank -- upgrade
1030                         ) then
1031                                 occupant.role = role;
1032                                 self:save_occupant(occupant);
1033                         end
1034                 end
1035         end
1036
1037         -- Tell the room of the new occupant affiliations+roles
1038         local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user"});
1039         if not role then -- getting kicked
1040                 if affiliation == "outcast" then
1041                         x:tag("status", {code="301"}):up(); -- banned
1042                 else
1043                         x:tag("status", {code="321"}):up(); -- affiliation change
1044                 end
1045         end
1046         local is_semi_anonymous = self:get_whois() == "moderators";
1047         for occupant, old_role in pairs(occupants_updated) do
1048                 self:publicise_occupant_status(occupant, x, nil, actor, reason);
1049                 if is_semi_anonymous and
1050                         (old_role == "moderator" and occupant.role ~= "moderator") or
1051                         (old_role ~= "moderator" and occupant.role == "moderator") then -- Has gained or lost moderator status
1052                         -- Send everyone else's presences (as jid visibility has changed)
1053                         for real_jid in occupant:each_session() do
1054                                 self:send_occupant_list(real_jid, function(occupant_jid, occupant)
1055                                         return occupant.bare_jid ~= jid;
1056                                 end);
1057                         end
1058                 end
1059         end
1060
1061         if self.save then self:save(); end
1062
1063         module:fire_event("muc-set-affiliation", {
1064                 room = self;
1065                 actor = actor;
1066                 jid = jid;
1067                 affiliation = affiliation or "none";
1068                 reason = reason;
1069                 previous_affiliation = target_affiliation;
1070                 in_room = next(occupants_updated) ~= nil;
1071         });
1072
1073         return true;
1074 end
1075
1076 function room_mt:get_role(nick)
1077         local occupant = self:get_occupant_by_nick(nick);
1078         return occupant and occupant.role or nil;
1079 end
1080
1081 function room_mt:set_role(actor, occupant_jid, role, reason)
1082         if not actor then return nil, "modify", "not-acceptable"; end
1083
1084         local occupant = self:get_occupant_by_nick(occupant_jid);
1085         if not occupant then return nil, "modify", "not-acceptable"; end
1086
1087         if valid_roles[role or "none"] == nil then
1088                 return nil, "modify", "not-acceptable";
1089         end
1090         role = role ~= "none" and role or nil; -- coerces `role == false` to `nil`
1091
1092         if actor ~= true then
1093                 -- Can't do anything to other owners or admins
1094                 local occupant_affiliation = self:get_affiliation(occupant.bare_jid);
1095                 if occupant_affiliation == "owner" and occupant_affiliation == "admin" then
1096                         return nil, "cancel", "not-allowed";
1097                 end
1098
1099                 -- If you are trying to give or take moderator role you need to be an owner or admin
1100                 if occupant.role == "moderator" or role == "moderator" then
1101                         local actor_affiliation = self:get_affiliation(actor);
1102                         if actor_affiliation ~= "owner" and actor_affiliation ~= "admin" then
1103                                 return nil, "cancel", "not-allowed";
1104                         end
1105                 end
1106
1107                 -- Need to be in the room and a moderator
1108                 local actor_occupant = self:get_occupant_by_real_jid(actor);
1109                 if not actor_occupant or actor_occupant.role ~= "moderator" then
1110                         return nil, "cancel", "not-allowed";
1111                 end
1112         end
1113
1114         local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user"});
1115         if not role then
1116                 x:tag("status", {code = "307"}):up();
1117         end
1118         occupant.role = role;
1119         self:save_occupant(occupant);
1120         self:publicise_occupant_status(occupant, x, nil, actor, reason);
1121         return true;
1122 end
1123
1124 local affiliation_notify = module:require "muc/affiliation_notify";
1125
1126 local name = module:require "muc/name";
1127 room_mt.get_name = name.get;
1128 room_mt.set_name = name.set;
1129
1130 local description = module:require "muc/description";
1131 room_mt.get_description = description.get;
1132 room_mt.set_description = description.set;
1133
1134 local hidden = module:require "muc/hidden";
1135 room_mt.get_hidden = hidden.get;
1136 room_mt.set_hidden = hidden.set;
1137 function room_mt:get_public()
1138         return not self:get_hidden();
1139 end
1140 function room_mt:set_public(public)
1141         return self:set_hidden(not public);
1142 end
1143
1144 local password = module:require "muc/password";
1145 room_mt.get_password = password.get;
1146 room_mt.set_password = password.set;
1147
1148 local whois = module:require "muc/whois";
1149 room_mt.get_whois = whois.get;
1150 room_mt.set_whois = whois.set;
1151
1152 local members_only = module:require "muc/members_only";
1153 room_mt.get_members_only = members_only.get;
1154 room_mt.set_members_only = members_only.set;
1155
1156 local moderated = module:require "muc/moderated";
1157 room_mt.get_moderated = moderated.get;
1158 room_mt.set_moderated = moderated.set;
1159
1160 local persistent = module:require "muc/persistent";
1161 room_mt.get_persistent = persistent.get;
1162 room_mt.set_persistent = persistent.set;
1163
1164 local subject = module:require "muc/subject";
1165 room_mt.get_changesubject = subject.get_changesubject;
1166 room_mt.set_changesubject = subject.set_changesubject;
1167 room_mt.get_subject = subject.get;
1168 room_mt.set_subject = subject.set;
1169 room_mt.send_subject = subject.send;
1170
1171 local history = module:require "muc/history";
1172 room_mt.send_history = history.send;
1173 room_mt.get_historylength = history.get_length;
1174 room_mt.set_historylength = history.set_length;
1175
1176 local _M = {}; -- module "muc"
1177
1178 function _M.new_room(jid, config)
1179         return setmetatable({
1180                 jid = jid;
1181                 _jid_nick = {};
1182                 _occupants = {};
1183                 _data = {
1184                 };
1185                 _affiliations = {};
1186         }, room_mt);
1187 end
1188
1189 _M.room_mt = room_mt;
1190
1191 return _M;