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 pairs(old_occupant.sessions) 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                 elseif dest_occupant == nil then
 402                         event_name = "muc-occupant-pre-leave";
 403                 else
 404                         event_name = "muc-occupant-pre-change";
 405                 end
 406                 if module:fire_event(event_name, event) then return true; end
 407
 408                 -- Check for nick conflicts
 409                 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
 410                         log("debug", "%s couldn't join due to nick conflict: %s", real_jid, dest_occupant.nick);
 411                         local reply = st.error_reply(stanza, "cancel", "conflict"):up();
 412                         reply.tags[1].attr.code = "409";
 413                         origin.send(reply:tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
 414                         return true;
 415                 end
 416
 417                 -- Send presence stanza about original occupant
 418                 if orig_occupant ~= nil and orig_occupant ~= dest_occupant then
 419                         local orig_x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";});
 420                         local dest_nick;
 421                         if dest_occupant == nil then -- Session is leaving
 422                                 log("debug", "session %s is leaving occupant %s", real_jid, orig_occupant.nick);
 423                                 if is_last_orig_session then
 424                                         orig_occupant.role = nil;
 425                                 end
 426                                 orig_occupant:set_session(real_jid, stanza);
 427                         else
 428                                 log("debug", "session %s is changing from occupant %s to %s", real_jid, orig_occupant.nick, dest_occupant.nick);
 429                                 local generated_unavail = st.presence {from = orig_occupant.nick, to = real_jid, type = "unavailable"};
 430                                 orig_occupant:set_session(real_jid, generated_unavail);
 431                                 dest_nick = select(3, jid_split(dest_occupant.nick));
 432                                 if not is_first_dest_session then -- User is swapping into another pre-existing session
 433                                         log("debug", "session %s is swapping into multisession %s, showing it leave.", real_jid, dest_occupant.nick);
 434                                         -- Show the other session leaving
 435                                         local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";})
 436                                                 :tag("status"):text("you are joining pre-existing session " .. dest_nick):up();
 437                                         add_item(x, self:get_affiliation(bare_jid), "none");
 438                                         local pr = st.presence{from = dest_occupant.nick, to = real_jid, type = "unavailable"}
 439                                                 :add_child(x);
 440                                         self:route_stanza(pr);
 441                                 end
 442                                 if is_first_dest_session and is_last_orig_session then -- Normal nick change
 443                                         log("debug", "no sessions in %s left; publically marking as nick change", orig_occupant.nick);
 444                                         orig_x:tag("status", {code = "303";}):up();
 445                                 else -- The session itself always needs to see a nick change
 446                                         -- don't want to get our old nick's available presence,
 447                                         -- so remove our session from there, and manually generate an unavailable
 448                                         orig_occupant:remove_session(real_jid);
 449                                         log("debug", "generating nick change for %s", real_jid);
 450                                         local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";});
 451                                         -- self:build_item_list(orig_occupant, x, false, dest_nick); -- COMPAT: clients get confused if they see other items besides their own
 452                                         add_item(x, self:get_affiliation(bare_jid), orig_occupant.role, real_jid, dest_nick);
 453                                         x:tag("status", {code = "303";}):up();
 454                                         x:tag("status", {code = "110";}):up();
 455                                         self:route_stanza(generated_unavail:add_child(x));
 456                                         dest_nick = nil; -- set dest_nick to nil; so general populance doesn't see it for whole orig_occupant
 457                                 end
 458                         end
 459                         self:save_occupant(orig_occupant);
 460                         self:publicise_occupant_status(orig_occupant, orig_x, dest_nick);
 461
 462                         if is_last_orig_session then
 463                                 module:fire_event("muc-occupant-left", {room = self; nick = orig_occupant.nick;});
 464                         end
 465                 end
 466
 467                 if dest_occupant ~= nil then
 468                         dest_occupant:set_session(real_jid, stanza);
 469                         local dest_x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";});
 470                         if is_new_room then
 471                                 dest_x:tag("status", {code = "201"}):up();
 472                         end
 473                         if orig_occupant == nil and self:get_whois() == "anyone" then
 474                                 dest_x:tag("status", {code = "100"}):up();
 475                         end
 476                         self:save_occupant(dest_occupant);
 477
 478                         if orig_occupant == nil then
 479                                 -- Send occupant list to newly joined user
 480                                 self:send_occupant_list(real_jid, function(nick, occupant)
 481                                         -- Don't include self
 482                                         return occupant:get_presence(real_jid) == nil;
 483                                 end)
 484                         end
 485                         self:publicise_occupant_status(dest_occupant, dest_x);
 486
 487                         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
 488                                 log("debug", "session %s split nicks; showing %s rejoining", real_jid, orig_occupant.nick);
 489                                 -- Show the original nick joining again
 490                                 local pr = st.clone(orig_occupant:get_presence());
 491                                 pr.attr.to = real_jid;
 492                                 local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user";});
 493                                 self:build_item_list(orig_occupant, x, false);
 494                                 -- TODO: new status code to inform client this was the multi-session it left?
 495                                 pr:add_child(x);
 496                                 self:route_stanza(pr);
 497                         end
 498
 499                         if orig_occupant == nil then
 500                                 if is_first_dest_session then
 501                                         module:fire_event("muc-occupant-joined", {room = self; nick = dest_occupant.nick; stanza = stanza;});
 502                                 end
 503                                 module:fire_event("muc-occupant-session-new", {room = self; nick = dest_occupant.nick; stanza = stanza; jid = real_jid;});
 504                         end
 505                 end
 506         elseif type ~= 'result' then -- bad type
 507                 if type ~= 'visible' and type ~= 'invisible' then -- COMPAT ejabberd can broadcast or forward XEP-0018 presences
 508                         origin.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME correct error?
 509                 end
 510         end
 511         return true;
 512 end
 513
 514 function room_mt:handle_iq_to_occupant(origin, stanza)
 515         local from, to = stanza.attr.from, stanza.attr.to;
 516         local type = stanza.attr.type;
 517         local id = stanza.attr.id;
 518         local occupant = self:get_occupant_by_nick(to);
 519         if (type == "error" or type == "result") then
 520                 do -- deconstruct_stanza_id
 521                         if not occupant then return nil; end
 522                         local from_jid, id, to_jid_hash = (base64.decode(stanza.attr.id) or ""):match("^(.+)%z(.*)%z(.+)$");
 523                         if not(from == from_jid or from == jid_bare(from_jid)) then return nil; end
 524                         local from_occupant_jid = self:get_occupant_jid(from_jid);
 525                         if from_occupant_jid == nil then return nil; end
 526                         local session_jid
 527                         for to_jid in occupant:each_session() do
 528                                 if md5(to_jid) == to_jid_hash then
 529                                         session_jid = to_jid;
 530                                         break;
 531                                 end
 532                         end
 533                         if session_jid == nil then return nil; end
 534                         stanza.attr.from, stanza.attr.to, stanza.attr.id = from_occupant_jid, session_jid, id;
 535                 end
 536                 log("debug", "%s sent private iq stanza to %s (%s)", from, to, stanza.attr.to);
 537                 self:route_stanza(stanza);
 538                 stanza.attr.from, stanza.attr.to, stanza.attr.id = from, to, id;
 539                 return true;
 540         else -- Type is "get" or "set"
 541                 local current_nick = self:get_occupant_jid(from);
 542                 if not current_nick then
 543                         origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
 544                         return true;
 545                 end
 546                 if not occupant then -- recipient not in room
 547                         origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Recipient not in room"));
 548                         return true;
 549                 end
 550                 do -- construct_stanza_id
 551                         stanza.attr.id = base64.encode(occupant.jid.."\0"..stanza.attr.id.."\0"..md5(from));
 552                 end
 553                 stanza.attr.from, stanza.attr.to = current_nick, occupant.jid;
 554                 log("debug", "%s sent private iq stanza to %s (%s)", from, to, occupant.jid);
 555                 if stanza.tags[1].attr.xmlns == 'vcard-temp' then
 556                         stanza.attr.to = jid_bare(stanza.attr.to);
 557                 end
 558                 self:route_stanza(stanza);
 559                 stanza.attr.from, stanza.attr.to, stanza.attr.id = from, to, id;
 560                 return true;
 561         end
 562 end
 563
 564 function room_mt:handle_message_to_occupant(origin, stanza)
 565         local from, to = stanza.attr.from, stanza.attr.to;
 566         local current_nick = self:get_occupant_jid(from);
 567         local type = stanza.attr.type;
 568         if not current_nick then -- not in room
 569                 if type ~= "error" then
 570                         origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
 571                 end
 572                 return true;
 573         end
 574         if type == "groupchat" then -- groupchat messages not allowed in PM
 575                 origin.send(st.error_reply(stanza, "modify", "bad-request"));
 576                 return true;
 577         elseif type == "error" and is_kickable_error(stanza) then
 578                 log("debug", "%s kicked from %s for sending an error message", current_nick, self.jid);
 579                 return self:handle_kickable(origin, stanza); -- send unavailable
 580         end
 581
 582         local o_data = self:get_occupant_by_nick(to);
 583         if not o_data then
 584                 origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Recipient not in room"));
 585                 return true;
 586         end
 587         log("debug", "%s sent private message stanza to %s (%s)", from, to, o_data.jid);
 588         stanza:tag("x", { xmlns = "http://jabber.org/protocol/muc#user" }):up();
 589         stanza.attr.from = current_nick;
 590         self:route_to_occupant(o_data, stanza)
 591         -- TODO: Remove x tag?
 592         stanza.attr.from = from;
 593         return true;
 594 end
 595
 596 function room_mt:send_form(origin, stanza)
 597         origin.send(st.reply(stanza):query("http://jabber.org/protocol/muc#owner")
 598                 :add_child(self:get_form_layout(stanza.attr.from):form())
 599         );
 600 end
 601
 602 function room_mt:get_form_layout(actor)
 603         local form = dataform.new({
 604                 title = "Configuration for "..self.jid,
 605                 instructions = "Complete and submit this form to configure the room.",
 606                 {
 607                         name = 'FORM_TYPE',
 608                         type = 'hidden',
 609                         value = 'http://jabber.org/protocol/muc#roomconfig'
 610                 }
 611         });
 612         return module:fire_event("muc-config-form", { room = self, actor = actor, form = form }) or form;
 613 end
 614
 615 function room_mt:process_form(origin, stanza)
 616         local form = stanza.tags[1]:get_child("x", "jabber:x:data");
 617         if form.attr.type == "cancel" then
 618                 origin.send(st.reply(stanza));
 619         elseif form.attr.type == "submit" then
 620                 local fields;
 621                 if form.tags[1] == nil then -- Instant room
 622                         fields = {};
 623                 else
 624                         fields = self:get_form_layout(stanza.attr.from):data(form);
 625                         if fields.FORM_TYPE ~= "http://jabber.org/protocol/muc#roomconfig" then
 626                                 origin.send(st.error_reply(stanza, "cancel", "bad-request", "Form is not of type room configuration"));
 627                                 return true;
 628                         end
 629                 end
 630
 631                 local event = {room = self; origin = origin; stanza = stanza; fields = fields; status_codes = {};};
 632                 function event.update_option(name, field, allowed)
 633                         local new = fields[field];
 634                         if new == nil then return; end
 635                         if allowed and not allowed[new] then return; end
 636                         if new == self["get_"..name](self) then return; end
 637                         event.status_codes["104"] = true;
 638                         self["set_"..name](self, new);
 639                         return true;
 640                 end
 641                 module:fire_event("muc-config-submitted", event);
 642
 643                 if self.save then self:save(true); end
 644                 origin.send(st.reply(stanza));
 645
 646                 if next(event.status_codes) then
 647                         local msg = st.message({type='groupchat', from=self.jid})
 648                                 :tag('x', {xmlns='http://jabber.org/protocol/muc#user'})
 649                         for code in pairs(event.status_codes) do
 650                                 msg:tag("status", {code = code;}):up();
 651                         end
 652                         msg:up();
 653                         self:broadcast_message(msg);
 654                 end
 655         else
 656                 origin.send(st.error_reply(stanza, "cancel", "bad-request", "Not a submitted form"));
 657         end
 658         return true;
 659 end
 660
 661 -- Removes everyone from the room
 662 function room_mt:clear(x)
 663         x = x or st.stanza("x", {xmlns='http://jabber.org/protocol/muc#user'});
 664         local occupants_updated = {};
 665         for nick, occupant in self:each_occupant() do
 666                 occupant.role = nil;
 667                 self:save_occupant(occupant);
 668                 occupants_updated[occupant] = true;
 669         end
 670         for occupant in pairs(occupants_updated) do
 671                 self:publicise_occupant_status(occupant, x);
 672                 module:fire_event("muc-occupant-left", { room = self; nick = occupant.nick; });
 673         end
 674 end
 675
 676 function room_mt:destroy(newjid, reason, password)
 677         local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user"})
 678                 :tag("item", { affiliation='none', role='none' }):up()
 679                 :tag("destroy", {jid=newjid});
 680         if reason then x:tag("reason"):text(reason):up(); end
 681         if password then x:tag("password"):text(password):up(); end
 682         x:up();
 683         self:clear(x);
 684         module:fire_event("muc-room-destroyed", { room = self });
 685 end
 686
 687 function room_mt:handle_disco_info_get_query(origin, stanza)
 688         origin.send(self:get_disco_info(stanza));
 689         return true;
 690 end
 691
 692 function room_mt:handle_disco_items_get_query(origin, stanza)
 693         origin.send(self:get_disco_items(stanza));
 694         return true;
 695 end
 696
 697 function room_mt:handle_admin_query_set_command(origin, stanza)
 698         local item = stanza.tags[1].tags[1];
 699         if item.attr.jid then -- Validate provided JID
 700                 item.attr.jid = jid_prep(item.attr.jid);
 701                 if not item.attr.jid then
 702                         origin.send(st.error_reply(stanza, "modify", "jid-malformed"));
 703                         return true;
 704                 end
 705         end
 706         if not item.attr.jid and item.attr.nick then -- COMPAT Workaround for Miranda sending 'nick' instead of 'jid' when changing affiliation
 707                 local occupant = self:get_occupant_by_nick(self.jid.."/"..item.attr.nick);
 708                 if occupant then item.attr.jid = occupant.jid; end
 709         elseif not item.attr.nick and item.attr.jid then
 710                 local nick = self:get_occupant_jid(item.attr.jid);
 711                 if nick then item.attr.nick = select(3, jid_split(nick)); end
 712         end
 713         local actor = stanza.attr.from;
 714         local reason = item:get_child_text("reason");
 715         local success, errtype, err
 716         if item.attr.affiliation and item.attr.jid and not item.attr.role then
 717                 success, errtype, err = self:set_affiliation(actor, item.attr.jid, item.attr.affiliation, reason);
 718         elseif item.attr.role and item.attr.nick and not item.attr.affiliation then
 719                 success, errtype, err = self:set_role(actor, self.jid.."/"..item.attr.nick, item.attr.role, reason);
 720         else
 721                 success, errtype, err = nil, "cancel", "bad-request";
 722         end
 723         if not success then origin.send(st.error_reply(stanza, errtype, err)); end
 724         origin.send(st.reply(stanza));
 725         return true;
 726 end
 727
 728 function room_mt:handle_admin_query_get_command(origin, stanza)
 729         local actor = stanza.attr.from;
 730         local affiliation = self:get_affiliation(actor);
 731         local item = stanza.tags[1].tags[1];
 732         local _aff = item.attr.affiliation;
 733         local _rol = item.attr.role;
 734         if _aff and not _rol then
 735                 if affiliation == "owner" or (affiliation == "admin" and _aff ~= "owner" and _aff ~= "admin") then
 736                         local reply = st.reply(stanza):query("http://jabber.org/protocol/muc#admin");
 737                         for jid, affiliation in pairs(self._affiliations) do
 738                                 if affiliation == _aff then
 739                                         reply:tag("item", {affiliation = _aff, jid = jid}):up();
 740                                 end
 741                         end
 742                         origin.send(reply);
 743                         return true;
 744                 else
 745                         origin.send(st.error_reply(stanza, "auth", "forbidden"));
 746                         return true;
 747                 end
 748         elseif _rol and not _aff then
 749                 local role = self:get_role(self:get_occupant_jid(actor)) or self:get_default_role(affiliation);
 750                 if valid_roles[role or "none"] >= valid_roles.moderator then
 751                         if _rol == "none" then _rol = nil; end
 752                         local reply = st.reply(stanza):query("http://jabber.org/protocol/muc#admin");
 753                         -- TODO: whois check here? (though fully anonymous rooms are not supported)
 754                         for occupant_jid, occupant in self:each_occupant() do
 755                                 if occupant.role == _rol then
 756                                         local nick = select(3,jid_split(occupant_jid));
 757                                         self:build_item_list(occupant, reply, false, nick);
 758                                 end
 759                         end
 760                         origin.send(reply:up());
 761                         return true;
 762                 else
 763                         origin.send(st.error_reply(stanza, "auth", "forbidden"));
 764                         return true;
 765                 end
 766         else
 767                 origin.send(st.error_reply(stanza, "cancel", "bad-request"));
 768                 return true;
 769         end
 770 end
 771
 772 function room_mt:handle_owner_query_get_to_room(origin, stanza)
 773         if self:get_affiliation(stanza.attr.from) ~= "owner" then
 774                 origin.send(st.error_reply(stanza, "auth", "forbidden", "Only owners can configure rooms"));
 775                 return true;
 776         end
 777
 778         self:send_form(origin, stanza);
 779         return true;
 780 end
 781 function room_mt:handle_owner_query_set_to_room(origin, stanza)
 782         if self:get_affiliation(stanza.attr.from) ~= "owner" then
 783                 origin.send(st.error_reply(stanza, "auth", "forbidden", "Only owners can configure rooms"));
 784                 return true;
 785         end
 786
 787         local child = stanza.tags[1].tags[1];
 788         if not child then
 789                 origin.send(st.error_reply(stanza, "modify", "bad-request"));
 790                 return true;
 791         elseif child.name == "destroy" then
 792                 local newjid = child.attr.jid;
 793                 local reason = child:get_child_text("reason");
 794                 local password = child:get_child_text("password");
 795                 self:destroy(newjid, reason, password);
 796                 origin.send(st.reply(stanza));
 797                 return true;
 798         elseif child.name == "x" and child.attr.xmlns == "jabber:x:data" then
 799                 return self:process_form(origin, stanza);
 800         else
 801                 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
 802                 return true;
 803         end
 804 end
 805
 806 function room_mt:handle_groupchat_to_room(origin, stanza)
 807         local from = stanza.attr.from;
 808         local occupant = self:get_occupant_by_real_jid(from);
 809         if module:fire_event("muc-occupant-groupchat", {
 810                 room = self; origin = origin; stanza = stanza; from = from; occupant = occupant;
 811         }) then return true; end
 812         stanza.attr.from = occupant.nick;
 813         self:broadcast_message(stanza);
 814         stanza.attr.from = from;
 815         return true;
 816 end
 817
 818 -- Role check
 819 module:hook("muc-occupant-groupchat", function(event)
 820         local role_rank = valid_roles[event.occupant and event.occupant.role or "none"];
 821         if role_rank <= valid_roles.none then
 822                 event.origin.send(st.error_reply(event.stanza, "cancel", "not-acceptable"));
 823                 return true;
 824         elseif role_rank <= valid_roles.visitor then
 825                 event.origin.send(st.error_reply(event.stanza, "auth", "forbidden"));
 826                 return true;
 827         end
 828 end, 50);
 829
 830 -- hack - some buggy clients send presence updates to the room rather than their nick
 831 function room_mt:handle_presence_to_room(origin, stanza)
 832         local current_nick = self:get_occupant_jid(stanza.attr.from);
 833         local handled
 834         if current_nick then
 835                 local to = stanza.attr.to;
 836                 stanza.attr.to = current_nick;
 837                 handled = self:handle_presence_to_occupant(origin, stanza);
 838                 stanza.attr.to = to;
 839         end
 840         return handled;
 841 end
 842
 843 -- Need visitor role or higher to invite
 844 module:hook("muc-pre-invite", function(event)
 845         local room, stanza = event.room, event.stanza;
 846         local _from, _to = stanza.attr.from, stanza.attr.to;
 847         local inviter = room:get_occupant_by_real_jid(_from);
 848         local role = inviter and inviter.role or room:get_default_role(room:get_affiliation(_from));
 849         if valid_roles[role or "none"] <= valid_roles.visitor then
 850                 event.origin.send(st.error_reply(stanza, "auth", "forbidden"));
 851                 return true;
 852         end
 853 end);
 854
 855 function room_mt:handle_mediated_invite(origin, stanza)
 856         local payload = stanza:get_child("x", "http://jabber.org/protocol/muc#user"):get_child("invite");
 857         local invitee = jid_prep(payload.attr.to);
 858         if not invitee then
 859                 origin.send(st.error_reply(stanza, "cancel", "jid-malformed"));
 860                 return true;
 861         elseif module:fire_event("muc-pre-invite", {room = self, origin = origin, stanza = stanza}) then
 862                 return true;
 863         end
 864         local invite = muc_util.filter_muc_x(st.clone(stanza));
 865         invite.attr.from = self.jid;
 866         invite.attr.to = invitee;
 867         invite:tag('x', {xmlns='http://jabber.org/protocol/muc#user'})
 868                         :tag('invite', {from = stanza.attr.from;})
 869                                 :tag('reason'):text(payload:get_child_text("reason")):up()
 870                         :up()
 871                 :up();
 872         if not module:fire_event("muc-invite", {room = self, stanza = invite, origin = origin, incoming = stanza}) then
 873                 self:route_stanza(invite);
 874         end
 875         return true;
 876 end
 877
 878 -- COMPAT: Some older clients expect this
 879 module:hook("muc-invite", function(event)
 880         local room, stanza = event.room, event.stanza;
 881         local invite = stanza:get_child("x", "http://jabber.org/protocol/muc#user"):get_child("invite");
 882         local reason = invite:get_child_text("reason");
 883         stanza:tag('x', {xmlns = "jabber:x:conference"; jid = room.jid;})
 884                 :text(reason or "")
 885         :up();
 886 end);
 887
 888 -- Add a plain message for clients which don't support invites
 889 module:hook("muc-invite", function(event)
 890         local room, stanza = event.room, event.stanza;
 891         if not stanza:get_child("body") then
 892                 local invite = stanza:get_child("x", "http://jabber.org/protocol/muc#user"):get_child("invite");
 893                 local reason = invite:get_child_text("reason") or "";
 894                 stanza:tag("body")
 895                         :text(invite.attr.from.." invited you to the room "..room.jid..(reason == "" and (" ("..reason..")") or ""))
 896                 :up();
 897         end
 898 end);
 899
 900 function room_mt:handle_mediated_decline(origin, stanza)
 901         local payload = stanza:get_child("x", "http://jabber.org/protocol/muc#user"):get_child("decline");
 902         local declinee = jid_prep(payload.attr.to);
 903         if not declinee then
 904                 origin.send(st.error_reply(stanza, "cancel", "jid-malformed"));
 905                 return true;
 906         elseif module:fire_event("muc-pre-decline", {room = self, origin = origin, stanza = stanza}) then
 907                 return true;
 908         end
 909         local decline = muc_util.filter_muc_x(st.clone(stanza));
 910         decline.attr.from = self.jid;
 911         decline.attr.to = declinee;
 912         decline:tag("x", {xmlns = "http://jabber.org/protocol/muc#user"})
 913                         :tag("decline", {from = stanza.attr.from})
 914                                 :tag("reason"):text(payload:get_child_text("reason")):up()
 915                         :up()
 916                 :up();
 917         if not module:fire_event("muc-decline", {room = self, stanza = decline, origin = origin, incoming = stanza}) then
 918                 local declinee = decline.attr.to; -- re-fetch, in case event modified it
 919                 local occupant
 920                 if jid_bare(declinee) == self.jid then -- declinee jid is already an in-room jid
 921                         occupant = self:get_occupant_by_nick(declinee);
 922                 end
 923                 if occupant then
 924                         self:route_to_occupant(occupant, decline);
 925                 else
 926                         self:route_stanza(decline);
 927                 end
 928         end
 929         return true;
 930 end
 931
 932 -- Add a plain message for clients which don't support declines
 933 module:hook("muc-decline", function(event)
 934         local room, stanza = event.room, event.stanza;
 935         if not stanza:get_child("body") then
 936                 local decline = stanza:get_child("x", "http://jabber.org/protocol/muc#user"):get_child("decline");
 937                 local reason = decline:get_child_text("reason") or "";
 938                 stanza:tag("body")
 939                         :text(decline.attr.from.." declined your invite to the room "..room.jid..(reason == "" and (" ("..reason..")") or ""))
 940                 :up();
 941         end
 942 end);
 943
 944 function room_mt:handle_message_to_room(origin, stanza)
 945         local type = stanza.attr.type;
 946         if type == "groupchat" then
 947                 return self:handle_groupchat_to_room(origin, stanza)
 948         elseif type == "error" and is_kickable_error(stanza) then
 949                 return self:handle_kickable(origin, stanza)
 950         elseif type == nil then
 951                 local x = stanza:get_child("x", "http://jabber.org/protocol/muc#user");
 952                 if x then
 953                         local payload = x.tags[1];
 954                         if payload == nil then
 955                                 -- fallthrough
 956                         elseif payload.name == "invite" and payload.attr.to then
 957                                 return self:handle_mediated_invite(origin, stanza)
 958                         elseif payload.name == "decline" and payload.attr.to then
 959                                 return self:handle_mediated_decline(origin, stanza)
 960                         end
 961                         origin.send(st.error_reply(stanza, "cancel", "bad-request"));
 962                         return true;
 963                 end
 964         end
 965 end
 966
 967 function room_mt:route_stanza(stanza)
 968         module:send(stanza);
 969 end
 970
 971 function room_mt:get_affiliation(jid)
 972         local node, host, resource = jid_split(jid);
 973         local bare = node and node.."@"..host or host;
 974         local result = self._affiliations[bare]; -- Affiliations are granted, revoked, and maintained based on the user's bare JID.
 975         if not result and self._affiliations[host] == "outcast" then result = "outcast"; end -- host banned
 976         return result;
 977 end
 978
 979 function room_mt:set_affiliation(actor, jid, affiliation, reason)
 980         if not actor then return nil, "modify", "not-acceptable"; end;
 981
 982         jid = jid_bare(jid);
 983
 984         if valid_affiliations[affiliation or "none"] == nil then
 985                 return nil, "modify", "not-acceptable";
 986         end
 987         affiliation = affiliation ~= "none" and affiliation or nil; -- coerces `affiliation == false` to `nil`
 988
 989         local target_affiliation = self._affiliations[jid]; -- Raw; don't want to check against host
 990         local is_downgrade = valid_affiliations[target_affiliation or "none"] > valid_affiliations[affiliation or "none"];
 991
 992         if actor ~= true then
 993                 local actor_affiliation = self:get_affiliation(actor);
 994                 if actor_affiliation == "owner" then
 995                         if jid_bare(actor) == jid then -- self change
 996                                 -- need at least one owner
 997                                 local is_last = true;
 998                                 for j, aff in pairs(self._affiliations) do if j ~= jid and aff == "owner" then is_last = false; break; end end
 999                                 if is_last then
1000                                         return nil, "cancel", "conflict";
1001                                 end
1002                         end
1003                         -- owners can do anything else
1004                 elseif affiliation == "owner" or affiliation == "admin"
1005                         or actor_affiliation ~= "admin"
1006                         or target_affiliation == "owner" or target_affiliation == "admin" then
1007                         -- Can't demote owners or other admins
1008                         return nil, "cancel", "not-allowed";
1009                 end
1010         end
1011
1012         -- Set in 'database'
1013         self._affiliations[jid] = affiliation;
1014
1015         -- Update roles
1016         local role = self:get_default_role(affiliation);
1017         local role_rank = valid_roles[role or "none"];
1018         local occupants_updated = {}; -- Filled with old roles
1019         for nick, occupant in self:each_occupant() do
1020                 if occupant.bare_jid == jid then
1021                         -- need to publcize in all cases; as affiliation in <item/> has changed.
1022                         occupants_updated[occupant] = occupant.role;
1023                         if occupant.role ~= role and (
1024                                 is_downgrade or
1025                                 valid_roles[occupant.role or "none"] < role_rank -- upgrade
1026                         ) then
1027                                 occupant.role = role;
1028                                 self:save_occupant(occupant);
1029                         end
1030                 end
1031         end
1032
1033         -- Tell the room of the new occupant affiliations+roles
1034         local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user"});
1035         if not role then -- getting kicked
1036                 if affiliation == "outcast" then
1037                         x:tag("status", {code="301"}):up(); -- banned
1038                 else
1039                         x:tag("status", {code="321"}):up(); -- affiliation change
1040                 end
1041         end
1042         local is_semi_anonymous = self:get_whois() == "moderators";
1043         for occupant, old_role in pairs(occupants_updated) do
1044                 self:publicise_occupant_status(occupant, x, nil, actor, reason);
1045                 if is_semi_anonymous and
1046                         (old_role == "moderator" and occupant.role ~= "moderator") or
1047                         (old_role ~= "moderator" and occupant.role == "moderator") then -- Has gained or lost moderator status
1048                         -- Send everyone else's presences (as jid visibility has changed)
1049                         for real_jid in occupant:each_session() do
1050                                 self:send_occupant_list(real_jid, function(occupant_jid, occupant)
1051                                         return occupant.bare_jid ~= jid;
1052                                 end);
1053                         end
1054                 end
1055         end
1056
1057         if self.save then self:save(); end
1058
1059         module:fire_event("muc-set-affiliation", {
1060                 room = self;
1061                 actor = actor;
1062                 jid = jid;
1063                 affiliation = affiliation or "none";
1064                 reason = reason;
1065                 previous_affiliation = target_affiliation;
1066                 in_room = next(occupants_updated) ~= nil;
1067         });
1068
1069         return true;
1070 end
1071
1072 function room_mt:get_role(nick)
1073         local occupant = self:get_occupant_by_nick(nick);
1074         return occupant and occupant.role or nil;
1075 end
1076
1077 function room_mt:set_role(actor, occupant_jid, role, reason)
1078         if not actor then return nil, "modify", "not-acceptable"; end
1079
1080         local occupant = self:get_occupant_by_nick(occupant_jid);
1081         if not occupant then return nil, "modify", "not-acceptable"; end
1082
1083         if valid_roles[role or "none"] == nil then
1084                 return nil, "modify", "not-acceptable";
1085         end
1086         role = role ~= "none" and role or nil; -- coerces `role == false` to `nil`
1087
1088         if actor ~= true then
1089                 -- Can't do anything to other owners or admins
1090                 local occupant_affiliation = self:get_affiliation(occupant.bare_jid);
1091                 if occupant_affiliation == "owner" and occupant_affiliation == "admin" then
1092                         return nil, "cancel", "not-allowed";
1093                 end
1094
1095                 -- If you are trying to give or take moderator role you need to be an owner or admin
1096                 if occupant.role == "moderator" or role == "moderator" then
1097                         local actor_affiliation = self:get_affiliation(actor);
1098                         if actor_affiliation ~= "owner" and actor_affiliation ~= "admin" then
1099                                 return nil, "cancel", "not-allowed";
1100                         end
1101                 end
1102
1103                 -- Need to be in the room and a moderator
1104                 local actor_occupant = self:get_occupant_by_real_jid(actor);
1105                 if not actor_occupant or actor_occupant.role ~= "moderator" then
1106                         return nil, "cancel", "not-allowed";
1107                 end
1108         end
1109
1110         local x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user"});
1111         if not role then
1112                 x:tag("status", {code = "307"}):up();
1113         end
1114         occupant.role = role;
1115         self:save_occupant(occupant);
1116         self:publicise_occupant_status(occupant, x, nil, actor, reason);
1117         return true;
1118 end
1119
1120 local affiliation_notify = module:require "muc/affiliation_notify";
1121
1122 local name = module:require "muc/name";
1123 room_mt.get_name = name.get;
1124 room_mt.set_name = name.set;
1125
1126 local description = module:require "muc/description";
1127 room_mt.get_description = description.get;
1128 room_mt.set_description = description.set;
1129
1130 local hidden = module:require "muc/hidden";
1131 room_mt.get_hidden = hidden.get;
1132 room_mt.set_hidden = hidden.set;
1133 function room_mt:get_public()
1134         return not self:get_hidden();
1135 end
1136 function room_mt:set_public(public)
1137         return self:set_hidden(not public);
1138 end
1139
1140 local password = module:require "muc/password";
1141 room_mt.get_password = password.get;
1142 room_mt.set_password = password.set;
1143
1144 local whois = module:require "muc/whois";
1145 room_mt.get_whois = whois.get;
1146 room_mt.set_whois = whois.set;
1147
1148 local members_only = module:require "muc/members_only";
1149 room_mt.get_members_only = members_only.get;
1150 room_mt.set_members_only = members_only.set;
1151
1152 local moderated = module:require "muc/moderated";
1153 room_mt.get_moderated = moderated.get;
1154 room_mt.set_moderated = moderated.set;
1155
1156 local persistent = module:require "muc/persistent";
1157 room_mt.get_persistent = persistent.get;
1158 room_mt.set_persistent = persistent.set;
1159
1160 local subject = module:require "muc/subject";
1161 room_mt.get_changesubject = subject.get_changesubject;
1162 room_mt.set_changesubject = subject.set_changesubject;
1163 room_mt.get_subject = subject.get;
1164 room_mt.set_subject = subject.set;
1165 room_mt.send_subject = subject.send;
1166
1167 local history = module:require "muc/history";
1168 room_mt.send_history = history.send;
1169 room_mt.get_historylength = history.get_length;
1170 room_mt.set_historylength = history.set_length;
1171
1172 local _M = {}; -- module "muc"
1173
1174 function _M.new_room(jid, config)
1175         return setmetatable({
1176                 jid = jid;
1177                 _jid_nick = {};
1178                 _occupants = {};
1179                 _data = {
1180                 };
1181                 _affiliations = {};
1182         }, room_mt);
1183 end
1184
1185 _M.room_mt = room_mt;
1186
1187 return _M;