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mod_muc: Now based on util.muc
author Waqas Hussain <waqas20@gmail.com>
date Wed, 24 Jun 2009 01:37:03 +0500
parents aad3ebce4fcc
children 569d58d21612
comparison
equal deleted inserted replaced
1397:4c7b8b8ab569 1398:141fec125af0
1 -- Prosody IM v0.4
2 -- Copyright (C) 2008-2009 Matthew Wild
3 -- Copyright (C) 2008-2009 Waqas Hussain
4 --
5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information.
7 --
8
9 local datamanager = require "util.datamanager";
10 local datetime = require "util.datetime";
11
12 local register_component = require "core.componentmanager".register_component;
13 local deregister_component = require "core.componentmanager".deregister_component;
14 local jid_split = require "util.jid".split;
15 local jid_bare = require "util.jid".bare;
16 local st = require "util.stanza";
17 local log = require "util.logger".init("mod_muc");
18 local multitable_new = require "util.multitable".new;
19 local t_insert, t_remove = table.insert, table.remove;
20 1
21 if module:get_host_type() ~= "component" then 2 if module:get_host_type() ~= "component" then
22 error("MUC should be loaded as a component, please see http://prosody.im/doc/components", 0); 3 error("MUC should be loaded as a component, please see http://prosody.im/doc/components", 0);
23 end 4 end
24 5
25 local muc_domain = module:get_host(); 6 local muc_host = module:get_host();
26 local muc_name = "Chatrooms"; 7 local muc_name = "Chatrooms";
27 local history_length = 20; 8 local history_length = 20;
28 9
29 -- room_name -> room 10 local muc_new_room = require "util.muc".new_room;
30 -- occupant_room_nick -> data 11 local register_component = require "core.componentmanager".register_component;
31 -- affiliation = ... 12 local deregister_component = require "core.componentmanager".deregister_component;
32 -- role 13 local jid_split = require "util.jid".split;
33 -- jid = occupant's real jid 14 local st = require "util.stanza";
34 local rooms = multitable_new();
35 15
36 local jid_nick = multitable_new(); -- real jid -> room's jid -> room nick 16 local rooms = {};
17 local component;
18 local host_room = muc_new_room(muc_host);
19 host_room.route_stanza = function(room, stanza) core_post_stanza(component, stanza); end;
37 20
38 -- room_name -> info 21 local function get_disco_info(stanza)
39 -- name - the room's friendly name 22 return st.iq({type='result', id=stanza.attr.id, from=muc_host, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")
40 -- subject - the room's subject
41 -- non-anonymous = true|nil
42 -- persistent = true|nil
43 -- history = {preserialized stanzas}
44 local rooms_info = multitable_new();
45
46 local persist_list = datamanager.load(nil, muc_domain, 'room_list') or {};
47 for room in pairs(persist_list) do
48 rooms_info:set(room, datamanager.store(room, muc_domain, 'rooms') or nil);
49 end
50
51 local component;
52
53 function filter_xmlns_from_array(array, filters)
54 local count = 0;
55 for i=#array,1,-1 do
56 local attr = array[i].attr;
57 if filters[attr and attr.xmlns] then
58 t_remove(array, i);
59 count = count + 1;
60 end
61 end
62 return count;
63 end
64 function filter_xmlns_from_stanza(stanza, filters)
65 if filters then
66 if filter_xmlns_from_array(stanza.tags, filters) ~= 0 then
67 return stanza, filter_xmlns_from_array(stanza, filters);
68 end
69 end
70 return stanza, 0;
71 end
72 local presence_filters = {["http://jabber.org/protocol/muc"]=true;["http://jabber.org/protocol/muc#user"]=true};
73 function get_filtered_presence(stanza)
74 return filter_xmlns_from_stanza(st.clone(stanza), presence_filters);
75 end
76 local kickable_error_conditions = {
77 ["gone"] = true;
78 ["internal-server-error"] = true;
79 ["item-not-found"] = true;
80 ["jid-malformed"] = true;
81 ["recipient-unavailable"] = true;
82 ["redirect"] = true;
83 ["remote-server-not-found"] = true;
84 ["remote-server-timeout"] = true;
85 ["service-unavailable"] = true;
86 };
87 function get_kickable_error(stanza)
88 for _, tag in ipairs(stanza.tags) do
89 if tag.name == "error" and tag.attr.xmlns == "jabber:client" then
90 for _, cond in ipairs(tag.tags) do
91 if cond.attr.xmlns == "urn:ietf:params:xml:ns:xmpp-stanzas" then
92 return kickable_error_conditions[cond.name] and cond.name;
93 end
94 end
95 return true; -- malformed error message
96 end
97 end
98 return true; -- malformed error message
99 end
100 function getUsingPath(stanza, path, getText)
101 local tag = stanza;
102 for _, name in ipairs(path) do
103 if type(tag) ~= 'table' then return; end
104 tag = tag:child_with_name(name);
105 end
106 if tag and getText then tag = table.concat(tag); end
107 return tag;
108 end
109 function getTag(stanza, path) return getUsingPath(stanza, path); end
110 function getText(stanza, path) return getUsingPath(stanza, path, true); end
111
112 function get_disco_info(stanza)
113 return st.iq({type='result', id=stanza.attr.id, from=muc_domain, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")
114 :tag("identity", {category='conference', type='text', name=muc_name}):up() 23 :tag("identity", {category='conference', type='text', name=muc_name}):up()
115 :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply 24 :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply
116 end 25 end
117 function get_disco_items(stanza) 26 local function get_disco_items(stanza)
118 local reply = st.iq({type='result', id=stanza.attr.id, from=muc_domain, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items"); 27 local reply = st.iq({type='result', id=stanza.attr.id, from=muc_host, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");
119 for room in pairs(rooms_info:get()) do 28 for jid, room in pairs(rooms) do
120 reply:tag("item", {jid=room, name=rooms_info:get(room, "name")}):up(); 29 reply:tag("item", {jid=jid, name=jid}):up();
121 end 30 end
122 return reply; -- TODO cache disco reply 31 return reply; -- TODO cache disco reply
123 end 32 end
124 function get_room_disco_info(stanza)
125 return st.iq({type='result', id=stanza.attr.id, from=stanza.attr.to, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")
126 :tag("identity", {category='conference', type='text', name=rooms_info:get(stanza.attr.to, "name")}):up()
127 :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply
128 end
129 function get_room_disco_items(stanza)
130 return st.iq({type='result', id=stanza.attr.id, from=stanza.attr.to, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");
131 end -- TODO allow non-private rooms
132 33
133 function save_room(room) 34 local function handle_to_domain(origin, stanza)
134 local persistent = rooms_info:get(room, 'persistent');
135 if persistent then
136 datamanager.store(room, muc_domain, 'rooms', rooms_info:get(room));
137 end
138 if persistent ~= persist_list[room] then
139 if not persistent then
140 datamanager.store(room, muc_domain, 'rooms', nil);
141 end
142 persist_list[room] = persistent;
143 datamanager.store(nil, muc_domain, 'room_list', persist_list);
144 end
145 end
146
147 function set_subject(current_nick, room, subject)
148 -- TODO check nick's authority
149 if subject == "" then subject = nil; end
150 rooms_info:set(room, 'subject', subject);
151 save_room();
152 local msg = st.message({type='groupchat', from=current_nick})
153 :tag('subject'):text(subject):up();
154 broadcast_message_stanza(room, msg, false);
155 return true;
156 end
157
158 function broadcast_message_stanza(room, stanza, historic)
159 local r = rooms:get(room);
160 if r then
161 for occupant, o_data in pairs(r) do
162 for jid in pairs(o_data.sessions) do
163 stanza.attr.to = jid;
164 core_route_stanza(component, stanza);
165 end
166 end
167 if historic then -- add to history
168 local history = rooms_info:get(room, 'history');
169 if not history then history = {}; rooms_info:set(room, 'history', history); end
170 -- stanza = st.clone(stanza);
171 stanza:tag("delay", {xmlns = "urn:xmpp:delay", from = muc_domain, stamp = datetime.datetime()}):up(); -- XEP-0203
172 stanza:tag("x", {xmlns = "jabber:x:delay", from = muc_domain, stamp = datetime.legacy()}):up(); -- XEP-0091 (deprecated)
173 t_insert(history, st.clone(st.preserialize(stanza)));
174 while #history > history_length do t_remove(history, 1) end
175 end
176 end
177 end
178 function broadcast_presence_stanza(room, stanza, code, nick)
179 stanza = get_filtered_presence(stanza);
180 local data = rooms:get(room, stanza.attr.from);
181 stanza:tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
182 :tag("item", {affiliation=data.affiliation, role=data.role, nick=nick}):up();
183 if code then
184 stanza:tag("status", {code=code}):up();
185 end
186 local me;
187 local r = rooms:get(room);
188 if r then
189 for occupant, o_data in pairs(r) do
190 if occupant ~= stanza.attr.from then
191 for jid in pairs(o_data.sessions) do
192 stanza.attr.to = jid;
193 core_route_stanza(component, stanza);
194 end
195 else
196 me = o_data;
197 end
198 end
199 end
200 if me then
201 stanza:tag("status", {code='110'});
202 for jid in pairs(me.sessions) do
203 stanza.attr.to = jid;
204 core_route_stanza(component, stanza);
205 end
206 end
207 end
208 function send_history(room, to)
209 local history = rooms_info:get(room, 'history'); -- send discussion history
210 if history then
211 for _, msg in ipairs(history) do
212 msg = st.deserialize(msg);
213 msg.attr.to=to;
214 core_route_stanza(component, msg);
215 end
216 end
217 if rooms_info:get(room, 'subject') then
218 core_route_stanza(component, st.message({type='groupchat', from=room, to=to}):tag("subject"):text(rooms_info:get(room, 'subject')));
219 end
220 end
221 function send_occupant_list(room, to)
222 local r = rooms:get(room);
223 if r then
224 local current_nick = jid_nick:get(to, room);
225 for occupant, o_data in pairs(r) do
226 if occupant ~= current_nick then
227 local pres = get_filtered_presence(o_data.sessions[o_data.jid]);
228 pres.attr.to, pres.attr.from = to, occupant;
229 pres:tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
230 :tag("item", {affiliation=o_data.affiliation, role=o_data.role}):up();
231 core_route_stanza(component, pres);
232 end
233 end
234 end
235 end
236
237 function handle_to_occupant(origin, stanza) -- PM, vCards, etc
238 local from, to = stanza.attr.from, stanza.attr.to;
239 local room = jid_bare(to);
240 local current_nick = jid_nick:get(from, room);
241 local type = stanza.attr.type;
242 log("debug", "room: %s, current_nick: %s, stanza: %s", room or "nil", current_nick or "nil", stanza:top_tag());
243 if (select(2, jid_split(from)) == muc_domain) then error("Presence from the MUC itself!!!"); end
244 if stanza.name == "presence" then
245 local pr = get_filtered_presence(stanza);
246 pr.attr.from = current_nick;
247 if type == "error" then -- error, kick em out!
248 if current_nick then
249 log("debug", "kicking %s from %s", current_nick, room);
250 handle_to_occupant(origin, st.presence({type='unavailable', from=from, to=to}):tag('status'):text('This participant is kicked from the room because he sent an error presence')); -- send unavailable
251 end
252 elseif type == "unavailable" then -- unavailable
253 if current_nick then
254 log("debug", "%s leaving %s", current_nick, room);
255 local data = rooms:get(room, current_nick);
256 data.role = 'none';
257 broadcast_presence_stanza(room, pr);
258 rooms:remove(room, current_nick);
259 jid_nick:remove(from, room);
260 end
261 elseif not type then -- available
262 if current_nick then
263 --if #pr == #stanza or current_nick ~= to then -- commented because google keeps resending directed presence
264 if current_nick == to then -- simple presence
265 log("debug", "%s broadcasted presence", current_nick);
266 rooms:get(room, current_nick).sessions[from] = pr;
267 broadcast_presence_stanza(room, pr);
268 else -- change nick
269 if rooms:get(room, to) then
270 log("debug", "%s couldn't change nick", current_nick);
271 origin.send(st.error_reply(stanza, "cancel", "conflict"));
272 else
273 local data = rooms:get(room, current_nick);
274 local to_nick = select(3, jid_split(to));
275 if to_nick then
276 log("debug", "%s (%s) changing nick to %s", current_nick, data.jid, to);
277 local p = st.presence({type='unavailable', from=current_nick});
278 broadcast_presence_stanza(room, p, '303', to_nick);
279 rooms:remove(room, current_nick);
280 rooms:set(room, to, data);
281 jid_nick:set(from, room, to);
282 pr.attr.from = to;
283 rooms:get(room, to).sessions[from] = pr;
284 broadcast_presence_stanza(room, pr);
285 else
286 --TODO malformed-jid
287 end
288 end
289 end
290 --else -- possible rejoin
291 -- log("debug", "%s had connection replaced", current_nick);
292 -- handle_to_occupant(origin, st.presence({type='unavailable', from=from, to=to}):tag('status'):text('Replaced by new connection'):up()); -- send unavailable
293 -- handle_to_occupant(origin, stanza); -- resend available
294 --end
295 else -- enter room
296 local new_nick = to;
297 if rooms:get(room, to) then
298 new_nick = nil;
299 end
300 if not new_nick then
301 log("debug", "%s couldn't join due to nick conflict: %s", from, to);
302 origin.send(st.error_reply(stanza, "cancel", "conflict"));
303 else
304 log("debug", "%s joining as %s", from, to);
305 local data;
306 if not rooms:get(room) and not rooms_info:get(room) then -- new room
307 rooms_info:set(room, 'name', (jid_split(room)));
308 data = {affiliation='owner', role='moderator', jid=from, sessions={[from]=get_filtered_presence(stanza)}};
309 end
310 if not data then -- new occupant
311 data = {affiliation='none', role='participant', jid=from, sessions={[from]=get_filtered_presence(stanza)}};
312 end
313 rooms:set(room, to, data);
314 jid_nick:set(from, room, to);
315 send_occupant_list(room, from);
316 pr.attr.from = to;
317 broadcast_presence_stanza(room, pr);
318 send_history(room, from);
319 end
320 end
321 elseif type ~= 'result' then -- bad type
322 origin.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME correct error?
323 end
324 elseif not current_nick and type ~= "error" and type ~= "result" then -- not in room
325 origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
326 elseif stanza.name == "message" and type == "groupchat" then -- groupchat messages not allowed in PM
327 origin.send(st.error_reply(stanza, "modify", "bad-request"));
328 elseif stanza.name == "message" and type == "error" and get_kickable_error(stanza) then
329 log("debug", "%s kicked from %s for sending an error message", current_nick, room);
330 handle_to_occupant(origin, st.presence({type='unavailable', from=from, to=to}):tag('status'):text('This participant is kicked from the room because he sent an error message to another occupant')); -- send unavailable
331 else -- private stanza
332 local o_data = rooms:get(room, to);
333 if o_data then
334 log("debug", "%s sent private stanza to %s (%s)", from, to, o_data.jid);
335 local jid = o_data.jid;
336 -- TODO if stanza.name=='iq' and type=='get' and stanza.tags[1].attr.xmlns == 'vcard-temp' then jid = jid_bare(jid); end
337 stanza.attr.to, stanza.attr.from = jid, current_nick;
338 core_route_stanza(component, stanza);
339 elseif type ~= "error" and type ~= "result" then -- recipient not in room
340 origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Recipient not in room"));
341 end
342 end
343 end
344
345 function handle_to_room(origin, stanza) -- presence changes and groupchat messages, along with disco/etc
346 local type = stanza.attr.type;
347 if stanza.name == "iq" and type == "get" then -- disco requests
348 local xmlns = stanza.tags[1].attr.xmlns;
349 if xmlns == "http://jabber.org/protocol/disco#info" then
350 origin.send(get_room_disco_info(stanza));
351 elseif xmlns == "http://jabber.org/protocol/disco#items" then
352 origin.send(get_room_disco_items(stanza));
353 else
354 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
355 end
356 elseif stanza.name == "message" and type == "groupchat" then
357 local from, to = stanza.attr.from, stanza.attr.to;
358 local room = jid_bare(to);
359 local current_nick = jid_nick:get(from, room);
360 if not current_nick then -- not in room
361 origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
362 else
363 local from = stanza.attr.from;
364 stanza.attr.from = current_nick;
365 local subject = getText(stanza, {"subject"});
366 if subject then
367 set_subject(current_nick, room, subject); -- TODO use broadcast_message_stanza
368 else
369 broadcast_message_stanza(room, stanza, true);
370 end
371 end
372 elseif stanza.name == "presence" then -- hack - some buggy clients send presence updates to the room rather than their nick
373 local to = stanza.attr.to;
374 local current_nick = jid_nick:get(stanza.attr.from, to);
375 if current_nick then
376 stanza.attr.to = current_nick;
377 handle_to_occupant(origin, stanza);
378 stanza.attr.to = to;
379 elseif type ~= "error" and type ~= "result" then
380 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
381 end
382 elseif stanza.name == "message" and not stanza.attr.type and #stanza.tags == 1 and jid_nick:get(stanza.attr.from, stanza.attr.to)
383 and stanza.tags[1].name == "x" and stanza.tags[1].attr.xmlns == "http://jabber.org/protocol/muc#user" and #stanza.tags[1].tags == 1
384 and stanza.tags[1].tags[1].name == "invite" and stanza.tags[1].tags[1].attr.to then
385 local _from, _to = stanza.attr.from, stanza.attr.to;
386 local _invitee = stanza.tags[1].tags[1].attr.to;
387 stanza.attr.from, stanza.attr.to = _to, _invitee;
388 stanza.tags[1].tags[1].attr.from, stanza.tags[1].tags[1].attr.to = _from, nil;
389 core_route_stanza(component, stanza);
390 stanza.tags[1].tags[1].attr.from, stanza.tags[1].tags[1].attr.to = nil, _invitee;
391 stanza.attr.from, stanza.attr.to = _from, _to;
392 else
393 if type == "error" or type == "result" then return; end
394 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
395 end
396 end
397
398 function handle_to_domain(origin, stanza)
399 local type = stanza.attr.type; 35 local type = stanza.attr.type;
400 if type == "error" or type == "result" then return; end 36 if type == "error" or type == "result" then return; end
401 if stanza.name == "iq" and type == "get" then 37 if stanza.name == "iq" and type == "get" then
402 local xmlns = stanza.tags[1].attr.xmlns; 38 local xmlns = stanza.tags[1].attr.xmlns;
403 if xmlns == "http://jabber.org/protocol/disco#info" then 39 if xmlns == "http://jabber.org/protocol/disco#info" then
406 origin.send(get_disco_items(stanza)); 42 origin.send(get_disco_items(stanza));
407 else 43 else
408 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc 44 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc
409 end 45 end
410 else 46 else
411 origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "The muc server doesn't deal with messages and presence directed at it")); 47 host_room:handle_stanza(origin, stanza);
48 --origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "The muc server doesn't deal with messages and presence directed at it"));
412 end 49 end
413 end 50 end
414 51
415 register_component(muc_domain, function(origin, stanza) 52 component = register_component(muc_host, function(origin, stanza)
416 local to_node, to_host, to_resource = jid_split(stanza.attr.to); 53 local to_node, to_host, to_resource = jid_split(stanza.attr.to);
417 if to_resource and not to_node then 54 if to_node then
418 if type == "error" or type == "result" then return; end 55 local bare = to_node.."@"..to_host;
419 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- host/resource 56 if to_host == muc_host or bare == muc_host then
420 elseif to_resource then 57 local room = rooms[bare];
421 handle_to_occupant(origin, stanza); 58 if not room then
422 elseif to_node then 59 room = muc_new_room(bare);
423 handle_to_room(origin, stanza) 60 room.route_stanza = function(room, stanza) core_post_stanza(component, stanza); end;
424 else -- to the main muc domain 61 rooms[bare] = room;
425 if type == "error" or type == "result" then return; end 62 end
426 handle_to_domain(origin, stanza); 63 room:handle_stanza(origin, stanza);
64 else --[[not for us?]] end
65 return;
427 end 66 end
67 -- to the main muc domain
68 handle_to_domain(origin, stanza);
428 end); 69 end);
429 70
430 module.unload = function() 71 module.unload = function()
431 deregister_component(muc_domain); 72 deregister_component(muc_host);
432 end 73 end
433 module.save = function() 74 module.save = function()
434 return {rooms = rooms.data; jid_nick = jid_nick.data; rooms_info = rooms_info.data; persist_list = persist_list}; 75 return {rooms = rooms};
435 end 76 end
436 module.restore = function(data) 77 module.restore = function(data)
437 rooms.data, jid_nick.data, rooms_info.data, persist_list = 78 rooms = data.rooms or {};
438 data.rooms or {}, data.jid_nick or {}, data.rooms_info or {}, data.persist_list or {};
439 end 79 end