mod_muc: Convert to unix line endings
authorMatthew Wild <mwild1@gmail.com>
Thu, 29 Jan 2009 20:46:34 +0000 (20:46 +0000)
committerMatthew Wild <mwild1@gmail.com>
Thu, 29 Jan 2009 20:46:34 +0000 (20:46 +0000)
plugins/mod_muc.lua

index 0b610835c417ef11413ea6e6c4e47e4b12ee97a4..0af1814248cd96e18a87b3a2720fa3eadedbdb0f 100644 (file)
-\r
-\r
-local register_component = require "core.componentmanager".register_component;\r
-local deregister_component = require "core.componentmanager".deregister_component;\r
-local jid_split = require "util.jid".split;\r
-local jid_bare = require "util.jid".bare;\r
-local st = require "util.stanza";\r
-local log = require "util.logger".init("mod_muc");\r
-local multitable_new = require "util.multitable".new;\r
-\r
-if module:get_host_type() ~= "component" then\r
-       error("MUC should be loaded as a component, please see http://prosody.im/doc/components", 0);\r
-end\r
-\r
-local muc_domain = module:get_host();\r
-\r
-local muc_name = "MUCMUCMUC!!!";\r
-\r
--- room_name -> room\r
-       -- occupant_room_nick -> data\r
-               -- affiliation = ...\r
-               -- role\r
-               -- jid = occupant's real jid\r
-local rooms = multitable_new();\r
-\r
-local jid_nick = multitable_new(); -- real jid -> room's jid -> room nick\r
-\r
--- room_name -> info\r
-       -- name - the room's friendly name\r
-       -- subject - the room's subject\r
-       -- non-anonymous = true|nil\r
-       -- persistent = true|nil\r
-local rooms_info = multitable_new();\r
-\r
-local persist_list = datamanager.load(nil, muc_domain, 'room_list') or {};\r
-for room in pairs(persist_list) do\r
-       rooms_info:set(room, datamanager.store(room, muc_domain, 'rooms') or nil);\r
-end\r
-\r
-local component;\r
-\r
-function getUsingPath(stanza, path, getText)\r
-       local tag = stanza;\r
-       for _, name in ipairs(path) do\r
-               if type(tag) ~= 'table' then return; end\r
-               tag = tag:child_with_name(name);\r
-       end\r
-       if tag and getText then tag = table.concat(tag); end\r
-       return tag;\r
-end\r
-function getTag(stanza, path) return getUsingPath(stanza, path); end\r
-function getText(stanza, path) return getUsingPath(stanza, path, true); end\r
-\r
-function get_disco_info(stanza)\r
-       return st.iq({type='result', id=stanza.attr.id, from=muc_domain, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")\r
-               :tag("identity", {category='conference', type='text', name=muc_name}):up()\r
-               :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply\r
-end\r
-function get_disco_items(stanza)\r
-       local reply = st.iq({type='result', id=stanza.attr.id, from=muc_domain, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");\r
-       for room in pairs(rooms_info:get()) do\r
-               reply:tag("item", {jid=room, name=rooms_info:get(room, "name")}):up();\r
-       end\r
-       return reply; -- TODO cache disco reply\r
-end\r
-function get_room_disco_info(stanza)\r
-       return st.iq({type='result', id=stanza.attr.id, from=stanza.attr.to, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")\r
-               :tag("identity", {category='conference', type='text', name=rooms_info:get(stanza.attr.to, "name")}):up()\r
-               :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply\r
-end\r
-function get_room_disco_items(stanza)\r
-       return st.iq({type='result', id=stanza.attr.id, from=stanza.attr.to, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");\r
-end -- TODO allow non-private rooms\r
-\r
-function save_room(room)\r
-       local persistent = rooms_info:get(room, 'persistent');\r
-       if persistent then\r
-               datamanager.store(room, muc_domain, 'rooms', rooms_info:get(room));\r
-       end\r
-       if persistent ~= persist_list[room] then\r
-               if not persistent then\r
-                       datamanager.store(room, muc_domain, 'rooms', nil);\r
-               end\r
-               persist_list[room] = persistent;\r
-               datamanager.store(nil, muc_domain, 'room_list', persist_list);\r
-       end\r
-end\r
-\r
-function set_subject(current_nick, room, subject)\r
-       -- TODO check nick's authority\r
-       if subject == "" then subject = nil; end\r
-       rooms_info:set(room, 'subject', subject);\r
-       save_room();\r
-       broadcast_message(current_nick, room, subject or "", nil);\r
-       return true;\r
-end\r
-\r
-function broadcast_presence(type, from, room, code)\r
-       local data = rooms:get(room, from);\r
-       local stanza = st.presence({type=type, from=from})\r
-               :tag("x", {xmlns='http://jabber.org/protocol/muc#user'})\r
-               :tag("item", {affiliation=data.affiliation, role=data.role}):up();\r
-       if code then\r
-               stanza:tag("status", {code=code}):up();\r
-       end\r
-       local me;\r
-       local r = rooms:get(room);\r
-       if r then\r
-               for occupant, o_data in pairs(r) do\r
-                       if occupant ~= from then\r
-                               stanza.attr.to = o_data.jid;\r
-                               core_route_stanza(component, stanza);\r
-                       else\r
-                               me = o_data.jid;\r
-                       end\r
-               end\r
-       end\r
-       if me then\r
-               stanza:tag("status", {code='110'});\r
-               stanza.attr.to = me;\r
-               core_route_stanza(component, stanza);\r
-       end\r
-end\r
-function broadcast_message(from, room, subject, body)\r
-       local stanza = st.message({type='groupchat', from=from});\r
-       if subject then stanza:tag('subject'):text(subject):up(); end\r
-       if body then stanza:tag('body'):text(body):up(); end\r
-       local r = rooms:get(room);\r
-       if r then\r
-               for occupant, o_data in pairs(r) do\r
-                       stanza.attr.to = o_data.jid;\r
-                       core_route_stanza(component, stanza);\r
-               end\r
-       end\r
-end\r
-\r
-function handle_to_occupant(origin, stanza) -- PM, vCards, etc\r
-       local from, to = stanza.attr.from, stanza.attr.to;\r
-       local room = jid_bare(to);\r
-       local current_nick = jid_nick:get(from, room);\r
-       local type = stanza.attr.type;\r
-       if stanza.name == "presence" then\r
-               if type == "error" then -- error, kick em out!\r
-                       local data = rooms:get(room, to);\r
-                       data.role = 'none';\r
-                       broadcast_presence('unavailable', to, room); -- TODO also add <status>This participant is kicked from the room because he sent an error presence: badformed error stanza</status>\r
-                       rooms:remove(room, to);\r
-                       jid_nick:remove(from, room);\r
-               elseif type == "unavailable" then -- unavailable\r
-                       if current_nick == to then\r
-                               local data = rooms:get(room, to);\r
-                               data.role = 'none';\r
-                               broadcast_presence('unavailable', to, room);\r
-                               rooms:remove(room, to);\r
-                               jid_nick:remove(from, room);\r
-                       end -- TODO else do nothing?\r
-               elseif not type then -- available\r
-                       if current_nick then\r
-                               if current_nick == to then -- simple presence\r
-                                       -- TODO broadcast\r
-                               else -- change nick\r
-                                       if rooms:get(room, to) then\r
-                                               origin.send(st.error_reply(stanza, "cancel", "conflict"));\r
-                                       else\r
-                                               local data = rooms:get(room, current_nick);\r
-                                               broadcast_presence('unavailable', current_nick, room, '303');\r
-                                               rooms:remove(room, current_nick);\r
-                                               rooms:set(room, to, data);\r
-                                               jid_nick:set(from, room, to);\r
-                                               broadcast_presence(nil, to, room);\r
-                                       end\r
-                               end\r
-                       else -- enter room\r
-                               if rooms:get(room, to) then\r
-                                       origin.send(st.error_reply(stanza, "cancel", "conflict"));\r
-                               else\r
-                                       local data;\r
-                                       if not rooms:get(room) and not rooms_info:get(room) then -- new room\r
-                                               data = {affiliation='owner', role='moderator', jid=from};\r
-                                       end\r
-                                       if not data then -- new occupant\r
-                                               data = {affiliation='none', role='participant', jid=from};\r
-                                       end\r
-                                       rooms:set(room, to, data);\r
-                                       jid_nick:set(from, room, to);\r
-                                       local r = rooms:get(room);\r
-                                       if r then\r
-                                               for occupant, o_data in pairs(r) do\r
-                                                       if occupant ~= from then\r
-                                                               local pres = st.presence({to=from, from=occupant})\r
-                                                                       :tag("x", {xmlns='http://jabber.org/protocol/muc#user'})\r
-                                                                       :tag("item", {affiliation=o_data.affiliation, role=o_data.role}):up();\r
-                                                               core_route_stanza(component, pres);\r
-                                                       end\r
-                                               end\r
-                                       end\r
-                                       broadcast_presence(nil, to, room);\r
-                                       -- TODO send discussion history\r
-                                       if rooms_info:get(room, 'subject') then\r
-                                               core_route_stanza(component, st.message({type='groupchat', from=room, to=from}):tag("subject"):text(rooms_info:get(room, 'subject')));\r
-                                       end\r
-                               end\r
-                       end\r
-               elseif type ~= 'result' then -- bad type\r
-                       origin.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME correct error?\r
-               end\r
-       elseif stanza.name == "message" and type == "groupchat" then\r
-               -- groupchat messages not allowed in PM\r
-               origin.send(st.error_reply(stanza, "modify", "bad-request"));\r
-       else\r
-               origin.send(st.error_reply(stanza, "cancel", "not-implemented", "Private stanzas not implemented")); -- TODO route private stanza\r
-       end\r
-end\r
-\r
-function handle_to_room(origin, stanza) -- presence changes and groupchat messages, along with disco/etc\r
-       local type = stanza.attr.type;\r
-       if stanza.name == "iq" and type == "get" then -- disco requests\r
-               local xmlns = stanza.tags[1].attr.xmlns;\r
-               if xmlns == "http://jabber.org/protocol/disco#info" then\r
-                       origin.send(get_room_disco_info(stanza));\r
-               elseif xmlns == "http://jabber.org/protocol/disco#items" then\r
-                       origin.send(get_room_disco_items(stanza));\r
-               else\r
-                       origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));\r
-               end\r
-       elseif stanza.name == "message" and type == "groupchat" then\r
-               local from, to = stanza.attr.from, stanza.attr.to;\r
-               local room = jid_bare(to);\r
-               local current_nick = jid_nick:get(from, room);\r
-               if not current_nick then -- not in room\r
-                       origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));\r
-               else\r
-                       local subject = getText(stanza, {"subject"});\r
-                       if subject then\r
-                               set_subject(current_nick, room, subject);\r
-                       else\r
-                               broadcast_message(current_nick, room, nil, getText(stanza, {"body"}));\r
-                               -- TODO add to discussion history\r
-                       end\r
-               end\r
-       else\r
-               if type == "error" or type == "result" then return; end\r
-               origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));\r
-       end\r
-end\r
-\r
-function handle_to_domain(origin, stanza)\r
-       local type = stanza.attr.type;\r
-       if type == "error" or type == "result" then return; end\r
-       if stanza.name == "iq" and type == "get" then\r
-               local xmlns = stanza.tags[1].attr.xmlns;\r
-               if xmlns == "http://jabber.org/protocol/disco#info" then\r
-                       origin.send(get_disco_info(stanza));\r
-               elseif xmlns == "http://jabber.org/protocol/disco#items" then\r
-                       origin.send(get_disco_items(stanza));\r
-               else\r
-                       origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc\r
-               end\r
-       else\r
-               origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "The muc server doesn't deal with messages and presence directed at it"));\r
-       end\r
-end\r
-\r
-function handle_stanza(origin, stanza)\r
-       local to_node, to_host, to_resource = jid_split(stanza.attr.to);\r
-       if stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then\r
-               if type == "error" or type == "result" then return; end\r
-               origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME what's appropriate?\r
-       elseif to_resource and not to_node then\r
-               if type == "error" or type == "result" then return; end\r
-               origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- host/resource\r
-       elseif to_resource then\r
-               handle_to_occupant(origin, stanza);\r
-       elseif to_node then\r
-               handle_to_room(origin, stanza)\r
-       else -- to the main muc domain\r
-               if type == "error" or type == "result" then return; end\r
-               handle_to_domain(origin, stanza);\r
-       end\r
-end\r
-\r
-module.load_component = function()\r
-       return handle_stanza; -- Return the function that we want to handle incoming stanzas\r
-end\r
-\r
-module.unload = function()\r
-       deregister_component(muc_domain);\r
-end\r
-module.save = function()\r
-       return {rooms = rooms.data; jid_nick = jid_nick.data; rooms_info = rooms_info.data; persist_list = persist_list};\r
-end\r
-module.restore = function(data)\r
-       rooms.data, jid_nick.data, rooms_info.data, persist_list =\r
-       data.rooms or {}, data.jid_nick or {}, data.rooms_info or {}, data.persist_list or {};\r
-end\r
+
+
+local register_component = require "core.componentmanager".register_component;
+local deregister_component = require "core.componentmanager".deregister_component;
+local jid_split = require "util.jid".split;
+local jid_bare = require "util.jid".bare;
+local st = require "util.stanza";
+local log = require "util.logger".init("mod_muc");
+local multitable_new = require "util.multitable".new;
+
+if module:get_host_type() ~= "component" then
+       error("MUC should be loaded as a component, please see http://prosody.im/doc/components", 0);
+end
+
+local muc_domain = module:get_host();
+
+local muc_name = "MUCMUCMUC!!!";
+
+-- room_name -> room
+       -- occupant_room_nick -> data
+               -- affiliation = ...
+               -- role
+               -- jid = occupant's real jid
+local rooms = multitable_new();
+
+local jid_nick = multitable_new(); -- real jid -> room's jid -> room nick
+
+-- room_name -> info
+       -- name - the room's friendly name
+       -- subject - the room's subject
+       -- non-anonymous = true|nil
+       -- persistent = true|nil
+local rooms_info = multitable_new();
+
+local persist_list = datamanager.load(nil, muc_domain, 'room_list') or {};
+for room in pairs(persist_list) do
+       rooms_info:set(room, datamanager.store(room, muc_domain, 'rooms') or nil);
+end
+
+local component;
+
+function getUsingPath(stanza, path, getText)
+       local tag = stanza;
+       for _, name in ipairs(path) do
+               if type(tag) ~= 'table' then return; end
+               tag = tag:child_with_name(name);
+       end
+       if tag and getText then tag = table.concat(tag); end
+       return tag;
+end
+function getTag(stanza, path) return getUsingPath(stanza, path); end
+function getText(stanza, path) return getUsingPath(stanza, path, true); end
+
+function get_disco_info(stanza)
+       return st.iq({type='result', id=stanza.attr.id, from=muc_domain, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")
+               :tag("identity", {category='conference', type='text', name=muc_name}):up()
+               :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply
+end
+function get_disco_items(stanza)
+       local reply = st.iq({type='result', id=stanza.attr.id, from=muc_domain, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");
+       for room in pairs(rooms_info:get()) do
+               reply:tag("item", {jid=room, name=rooms_info:get(room, "name")}):up();
+       end
+       return reply; -- TODO cache disco reply
+end
+function get_room_disco_info(stanza)
+       return st.iq({type='result', id=stanza.attr.id, from=stanza.attr.to, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")
+               :tag("identity", {category='conference', type='text', name=rooms_info:get(stanza.attr.to, "name")}):up()
+               :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply
+end
+function get_room_disco_items(stanza)
+       return st.iq({type='result', id=stanza.attr.id, from=stanza.attr.to, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");
+end -- TODO allow non-private rooms
+
+function save_room(room)
+       local persistent = rooms_info:get(room, 'persistent');
+       if persistent then
+               datamanager.store(room, muc_domain, 'rooms', rooms_info:get(room));
+       end
+       if persistent ~= persist_list[room] then
+               if not persistent then
+                       datamanager.store(room, muc_domain, 'rooms', nil);
+               end
+               persist_list[room] = persistent;
+               datamanager.store(nil, muc_domain, 'room_list', persist_list);
+       end
+end
+
+function set_subject(current_nick, room, subject)
+       -- TODO check nick's authority
+       if subject == "" then subject = nil; end
+       rooms_info:set(room, 'subject', subject);
+       save_room();
+       broadcast_message(current_nick, room, subject or "", nil);
+       return true;
+end
+
+function broadcast_presence(type, from, room, code)
+       local data = rooms:get(room, from);
+       local stanza = st.presence({type=type, from=from})
+               :tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
+               :tag("item", {affiliation=data.affiliation, role=data.role}):up();
+       if code then
+               stanza:tag("status", {code=code}):up();
+       end
+       local me;
+       local r = rooms:get(room);
+       if r then
+               for occupant, o_data in pairs(r) do
+                       if occupant ~= from then
+                               stanza.attr.to = o_data.jid;
+                               core_route_stanza(component, stanza);
+                       else
+                               me = o_data.jid;
+                       end
+               end
+       end
+       if me then
+               stanza:tag("status", {code='110'});
+               stanza.attr.to = me;
+               core_route_stanza(component, stanza);
+       end
+end
+function broadcast_message(from, room, subject, body)
+       local stanza = st.message({type='groupchat', from=from});
+       if subject then stanza:tag('subject'):text(subject):up(); end
+       if body then stanza:tag('body'):text(body):up(); end
+       local r = rooms:get(room);
+       if r then
+               for occupant, o_data in pairs(r) do
+                       stanza.attr.to = o_data.jid;
+                       core_route_stanza(component, stanza);
+               end
+       end
+end
+
+function handle_to_occupant(origin, stanza) -- PM, vCards, etc
+       local from, to = stanza.attr.from, stanza.attr.to;
+       local room = jid_bare(to);
+       local current_nick = jid_nick:get(from, room);
+       local type = stanza.attr.type;
+       if stanza.name == "presence" then
+               if type == "error" then -- error, kick em out!
+                       local data = rooms:get(room, to);
+                       data.role = 'none';
+                       broadcast_presence('unavailable', to, room); -- TODO also add <status>This participant is kicked from the room because he sent an error presence: badformed error stanza</status>
+                       rooms:remove(room, to);
+                       jid_nick:remove(from, room);
+               elseif type == "unavailable" then -- unavailable
+                       if current_nick == to then
+                               local data = rooms:get(room, to);
+                               data.role = 'none';
+                               broadcast_presence('unavailable', to, room);
+                               rooms:remove(room, to);
+                               jid_nick:remove(from, room);
+                       end -- TODO else do nothing?
+               elseif not type then -- available
+                       if current_nick then
+                               if current_nick == to then -- simple presence
+                                       -- TODO broadcast
+                               else -- change nick
+                                       if rooms:get(room, to) then
+                                               origin.send(st.error_reply(stanza, "cancel", "conflict"));
+                                       else
+                                               local data = rooms:get(room, current_nick);
+                                               broadcast_presence('unavailable', current_nick, room, '303');
+                                               rooms:remove(room, current_nick);
+                                               rooms:set(room, to, data);
+                                               jid_nick:set(from, room, to);
+                                               broadcast_presence(nil, to, room);
+                                       end
+                               end
+                       else -- enter room
+                               if rooms:get(room, to) then
+                                       origin.send(st.error_reply(stanza, "cancel", "conflict"));
+                               else
+                                       local data;
+                                       if not rooms:get(room) and not rooms_info:get(room) then -- new room
+                                               data = {affiliation='owner', role='moderator', jid=from};
+                                       end
+                                       if not data then -- new occupant
+                                               data = {affiliation='none', role='participant', jid=from};
+                                       end
+                                       rooms:set(room, to, data);
+                                       jid_nick:set(from, room, to);
+                                       local r = rooms:get(room);
+                                       if r then
+                                               for occupant, o_data in pairs(r) do
+                                                       if occupant ~= from then
+                                                               local pres = st.presence({to=from, from=occupant})
+                                                                       :tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
+                                                                       :tag("item", {affiliation=o_data.affiliation, role=o_data.role}):up();
+                                                               core_route_stanza(component, pres);
+                                                       end
+                                               end
+                                       end
+                                       broadcast_presence(nil, to, room);
+                                       -- TODO send discussion history
+                                       if rooms_info:get(room, 'subject') then
+                                               core_route_stanza(component, st.message({type='groupchat', from=room, to=from}):tag("subject"):text(rooms_info:get(room, 'subject')));
+                                       end
+                               end
+                       end
+               elseif type ~= 'result' then -- bad type
+                       origin.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME correct error?
+               end
+       elseif stanza.name == "message" and type == "groupchat" then
+               -- groupchat messages not allowed in PM
+               origin.send(st.error_reply(stanza, "modify", "bad-request"));
+       else
+               origin.send(st.error_reply(stanza, "cancel", "not-implemented", "Private stanzas not implemented")); -- TODO route private stanza
+       end
+end
+
+function handle_to_room(origin, stanza) -- presence changes and groupchat messages, along with disco/etc
+       local type = stanza.attr.type;
+       if stanza.name == "iq" and type == "get" then -- disco requests
+               local xmlns = stanza.tags[1].attr.xmlns;
+               if xmlns == "http://jabber.org/protocol/disco#info" then
+                       origin.send(get_room_disco_info(stanza));
+               elseif xmlns == "http://jabber.org/protocol/disco#items" then
+                       origin.send(get_room_disco_items(stanza));
+               else
+                       origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
+               end
+       elseif stanza.name == "message" and type == "groupchat" then
+               local from, to = stanza.attr.from, stanza.attr.to;
+               local room = jid_bare(to);
+               local current_nick = jid_nick:get(from, room);
+               if not current_nick then -- not in room
+                       origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
+               else
+                       local subject = getText(stanza, {"subject"});
+                       if subject then
+                               set_subject(current_nick, room, subject);
+                       else
+                               broadcast_message(current_nick, room, nil, getText(stanza, {"body"}));
+                               -- TODO add to discussion history
+                       end
+               end
+       else
+               if type == "error" or type == "result" then return; end
+               origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
+       end
+end
+
+function handle_to_domain(origin, stanza)
+       local type = stanza.attr.type;
+       if type == "error" or type == "result" then return; end
+       if stanza.name == "iq" and type == "get" then
+               local xmlns = stanza.tags[1].attr.xmlns;
+               if xmlns == "http://jabber.org/protocol/disco#info" then
+                       origin.send(get_disco_info(stanza));
+               elseif xmlns == "http://jabber.org/protocol/disco#items" then
+                       origin.send(get_disco_items(stanza));
+               else
+                       origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc
+               end
+       else
+               origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "The muc server doesn't deal with messages and presence directed at it"));
+       end
+end
+
+function handle_stanza(origin, stanza)
+       local to_node, to_host, to_resource = jid_split(stanza.attr.to);
+       if stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then
+               if type == "error" or type == "result" then return; end
+               origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME what's appropriate?
+       elseif to_resource and not to_node then
+               if type == "error" or type == "result" then return; end
+               origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- host/resource
+       elseif to_resource then
+               handle_to_occupant(origin, stanza);
+       elseif to_node then
+               handle_to_room(origin, stanza)
+       else -- to the main muc domain
+               if type == "error" or type == "result" then return; end
+               handle_to_domain(origin, stanza);
+       end
+end
+
+module.load_component = function()
+       return handle_stanza; -- Return the function that we want to handle incoming stanzas
+end
+
+module.unload = function()
+       deregister_component(muc_domain);
+end
+module.save = function()
+       return {rooms = rooms.data; jid_nick = jid_nick.data; rooms_info = rooms_info.data; persist_list = persist_list};
+end
+module.restore = function(data)
+       rooms.data, jid_nick.data, rooms_info.data, persist_list =
+       data.rooms or {}, data.jid_nick or {}, data.rooms_info or {}, data.persist_list or {};
+end