|
1734
|
1 -- Prosody IM
|
|
|
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 jid_split = require "util.jid".split;
|
|
|
13 local jid_bare = require "util.jid".bare;
|
|
|
14 local st = require "util.stanza";
|
|
|
15 local log = require "util.logger".init("mod_muc");
|
|
|
16 local multitable_new = require "util.multitable".new;
|
|
|
17 local t_insert, t_remove = table.insert, table.remove;
|
|
|
18
|
|
|
19 local muc_domain = nil; --module:get_host();
|
|
|
20 local history_length = 20;
|
|
|
21
|
|
|
22 ------------
|
|
|
23 local function filter_xmlns_from_array(array, filters)
|
|
|
24 local count = 0;
|
|
|
25 for i=#array,1,-1 do
|
|
|
26 local attr = array[i].attr;
|
|
|
27 if filters[attr and attr.xmlns] then
|
|
|
28 t_remove(array, i);
|
|
|
29 count = count + 1;
|
|
|
30 end
|
|
|
31 end
|
|
|
32 return count;
|
|
|
33 end
|
|
|
34 local function filter_xmlns_from_stanza(stanza, filters)
|
|
|
35 if filters then
|
|
|
36 if filter_xmlns_from_array(stanza.tags, filters) ~= 0 then
|
|
|
37 return stanza, filter_xmlns_from_array(stanza, filters);
|
|
|
38 end
|
|
|
39 end
|
|
|
40 return stanza, 0;
|
|
|
41 end
|
|
|
42 local presence_filters = {["http://jabber.org/protocol/muc"]=true;["http://jabber.org/protocol/muc#user"]=true};
|
|
|
43 local function get_filtered_presence(stanza)
|
|
|
44 return filter_xmlns_from_stanza(st.clone(stanza), presence_filters);
|
|
|
45 end
|
|
|
46 local kickable_error_conditions = {
|
|
|
47 ["gone"] = true;
|
|
|
48 ["internal-server-error"] = true;
|
|
|
49 ["item-not-found"] = true;
|
|
|
50 ["jid-malformed"] = true;
|
|
|
51 ["recipient-unavailable"] = true;
|
|
|
52 ["redirect"] = true;
|
|
|
53 ["remote-server-not-found"] = true;
|
|
|
54 ["remote-server-timeout"] = true;
|
|
|
55 ["service-unavailable"] = true;
|
|
|
56 };
|
|
|
57 local function get_kickable_error(stanza)
|
|
|
58 for _, tag in ipairs(stanza.tags) do
|
|
|
59 if tag.name == "error" and tag.attr.xmlns == "jabber:client" then
|
|
|
60 for _, cond in ipairs(tag.tags) do
|
|
|
61 if cond.attr.xmlns == "urn:ietf:params:xml:ns:xmpp-stanzas" then
|
|
|
62 return kickable_error_conditions[cond.name] and cond.name;
|
|
|
63 end
|
|
|
64 end
|
|
|
65 return true; -- malformed error message
|
|
|
66 end
|
|
|
67 end
|
|
|
68 return true; -- malformed error message
|
|
|
69 end
|
|
|
70 local function getUsingPath(stanza, path, getText)
|
|
|
71 local tag = stanza;
|
|
|
72 for _, name in ipairs(path) do
|
|
|
73 if type(tag) ~= 'table' then return; end
|
|
|
74 tag = tag:child_with_name(name);
|
|
|
75 end
|
|
|
76 if tag and getText then tag = table.concat(tag); end
|
|
|
77 return tag;
|
|
|
78 end
|
|
|
79 local function getTag(stanza, path) return getUsingPath(stanza, path); end
|
|
|
80 local function getText(stanza, path) return getUsingPath(stanza, path, true); end
|
|
|
81 -----------
|
|
|
82
|
|
|
83 --[[function get_room_disco_info(room, stanza)
|
|
|
84 return st.iq({type='result', id=stanza.attr.id, from=stanza.attr.to, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")
|
|
|
85 :tag("identity", {category='conference', type='text', name=room._data["name"]):up()
|
|
|
86 :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply
|
|
|
87 end
|
|
|
88 function get_room_disco_items(room, stanza)
|
|
|
89 return st.iq({type='result', id=stanza.attr.id, from=stanza.attr.to, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");
|
|
|
90 end -- TODO allow non-private rooms]]
|
|
|
91
|
|
|
92 --
|
|
|
93
|
|
|
94 local function room_broadcast_presence(room, stanza, code, nick)
|
|
|
95 stanza = get_filtered_presence(stanza);
|
|
|
96 local data = room._participants[stanza.attr.from];
|
|
|
97 stanza:tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
|
|
|
98 :tag("item", {affiliation=data.affiliation, role=data.role, nick=nick}):up();
|
|
|
99 if code then
|
|
|
100 stanza:tag("status", {code=code}):up();
|
|
|
101 end
|
|
|
102 local me;
|
|
|
103 for occupant, o_data in pairs(room._participants) do
|
|
|
104 if occupant ~= stanza.attr.from then
|
|
|
105 for jid in pairs(o_data.sessions) do
|
|
|
106 stanza.attr.to = jid;
|
|
|
107 room:route_stanza(stanza);
|
|
|
108 end
|
|
|
109 else
|
|
|
110 me = o_data;
|
|
|
111 end
|
|
|
112 end
|
|
|
113 if me then
|
|
|
114 stanza:tag("status", {code='110'});
|
|
|
115 for jid in pairs(me.sessions) do
|
|
|
116 stanza.attr.to = jid;
|
|
|
117 room:route_stanza(stanza);
|
|
|
118 end
|
|
|
119 end
|
|
|
120 end
|
|
|
121 local function room_broadcast_message(room, stanza, historic)
|
|
|
122 for occupant, o_data in pairs(room._participants) do
|
|
|
123 for jid in pairs(o_data.sessions) do
|
|
|
124 stanza.attr.to = jid;
|
|
|
125 room:route_stanza(stanza);
|
|
|
126 end
|
|
|
127 end
|
|
|
128 if historic then -- add to history
|
|
|
129 local history = room._data['history'];
|
|
|
130 if not history then history = {}; room._data['history'] = history; end
|
|
|
131 -- stanza = st.clone(stanza);
|
|
|
132 stanza:tag("delay", {xmlns = "urn:xmpp:delay", from = muc_domain, stamp = datetime.datetime()}):up(); -- XEP-0203
|
|
|
133 stanza:tag("x", {xmlns = "jabber:x:delay", from = muc_domain, stamp = datetime.legacy()}):up(); -- XEP-0091 (deprecated)
|
|
|
134 t_insert(history, st.clone(st.preserialize(stanza)));
|
|
|
135 while #history > history_length do t_remove(history, 1) end
|
|
|
136 end
|
|
|
137 end
|
|
|
138
|
|
|
139
|
|
|
140 local function room_send_occupant_list(room, to)
|
|
|
141 local current_nick = room._jid_nick[to];
|
|
|
142 for occupant, o_data in pairs(room._participants) do
|
|
|
143 if occupant ~= current_nick then
|
|
|
144 local pres = get_filtered_presence(o_data.sessions[o_data.jid]);
|
|
|
145 pres.attr.to, pres.attr.from = to, occupant;
|
|
|
146 pres:tag("x", {xmlns='http://jabber.org/protocol/muc#user'})
|
|
|
147 :tag("item", {affiliation=o_data.affiliation, role=o_data.role}):up();
|
|
|
148 room:route_stanza(pres);
|
|
|
149 end
|
|
|
150 end
|
|
|
151 end
|
|
|
152 local function room_send_history(room, to)
|
|
|
153 local history = room._data['history']; -- send discussion history
|
|
|
154 if history then
|
|
|
155 for _, msg in ipairs(history) do
|
|
|
156 msg = st.deserialize(msg);
|
|
|
157 msg.attr.to=to;
|
|
|
158 room:route_stanza(msg);
|
|
|
159 end
|
|
|
160 end
|
|
|
161 if room._data['subject'] then
|
|
|
162 room:route_stanza(st.message({type='groupchat', from=room.jid, to=to}):tag("subject"):text(room._data['subject']));
|
|
|
163 end
|
|
|
164 end
|
|
|
165
|
|
|
166 local function room_get_disco_info(self, stanza) end
|
|
|
167 local function room_get_disco_items(self, stanza) end
|
|
|
168 local function room_set_subject(room, current_nick, subject)
|
|
|
169 -- TODO check nick's authority
|
|
|
170 if subject == "" then subject = nil; end
|
|
|
171 room._data['subject'] = subject;
|
|
|
172 local msg = st.message({type='groupchat', from=current_nick})
|
|
|
173 :tag('subject'):text(subject):up();
|
|
|
174 room_broadcast_message(room, msg, false);
|
|
|
175 return true;
|
|
|
176 end
|
|
|
177
|
|
|
178 local function room_handle_to_occupant(self, origin, stanza) -- PM, vCards, etc
|
|
|
179 local from, to = stanza.attr.from, stanza.attr.to;
|
|
|
180 local room = jid_bare(to);
|
|
|
181 local current_nick = self._jid_nick[from];
|
|
|
182 local type = stanza.attr.type;
|
|
|
183 log("debug", "room: %s, current_nick: %s, stanza: %s", room or "nil", current_nick or "nil", stanza:top_tag());
|
|
|
184 if (select(2, jid_split(from)) == muc_domain) then error("Presence from the MUC itself!!!"); end
|
|
|
185 if stanza.name == "presence" then
|
|
|
186 local pr = get_filtered_presence(stanza);
|
|
|
187 pr.attr.from = current_nick;
|
|
|
188 if type == "error" then -- error, kick em out!
|
|
|
189 if current_nick then
|
|
|
190 log("debug", "kicking %s from %s", current_nick, room);
|
|
|
191 room_handle_to_occupant(self, 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
|
|
|
192 end
|
|
|
193 elseif type == "unavailable" then -- unavailable
|
|
|
194 if current_nick then
|
|
|
195 log("debug", "%s leaving %s", current_nick, room);
|
|
|
196 local data = self._participants[current_nick];
|
|
|
197 data.role = 'none';
|
|
|
198 room_broadcast_presence(self, pr);
|
|
|
199 self._participants[current_nick] = nil;
|
|
|
200 self._jid_nick[from] = nil;
|
|
|
201 end
|
|
|
202 elseif not type then -- available
|
|
|
203 if current_nick then
|
|
|
204 --if #pr == #stanza or current_nick ~= to then -- commented because google keeps resending directed presence
|
|
|
205 if current_nick == to then -- simple presence
|
|
|
206 log("debug", "%s broadcasted presence", current_nick);
|
|
|
207 self._participants[current_nick].sessions[from] = pr;
|
|
|
208 room_broadcast_presence(self, pr);
|
|
|
209 else -- change nick
|
|
|
210 if self._participants[to] then
|
|
|
211 log("debug", "%s couldn't change nick", current_nick);
|
|
|
212 origin.send(st.error_reply(stanza, "cancel", "conflict"):tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
|
|
|
213 else
|
|
|
214 local data = self._participants[current_nick];
|
|
|
215 local to_nick = select(3, jid_split(to));
|
|
|
216 if to_nick then
|
|
|
217 log("debug", "%s (%s) changing nick to %s", current_nick, data.jid, to);
|
|
|
218 local p = st.presence({type='unavailable', from=current_nick});
|
|
|
219 room_broadcast_presence(self, p, '303', to_nick);
|
|
|
220 self._participants[current_nick] = nil;
|
|
|
221 self._participants[to] = data;
|
|
|
222 self._jid_nick[from] = to;
|
|
|
223 pr.attr.from = to;
|
|
|
224 self._participants[to].sessions[from] = pr;
|
|
|
225 room_broadcast_presence(self, pr);
|
|
|
226 else
|
|
|
227 --TODO malformed-jid
|
|
|
228 end
|
|
|
229 end
|
|
|
230 end
|
|
|
231 --else -- possible rejoin
|
|
|
232 -- log("debug", "%s had connection replaced", current_nick);
|
|
|
233 -- handle_to_occupant(origin, st.presence({type='unavailable', from=from, to=to}):tag('status'):text('Replaced by new connection'):up()); -- send unavailable
|
|
|
234 -- handle_to_occupant(origin, stanza); -- resend available
|
|
|
235 --end
|
|
|
236 else -- enter room
|
|
|
237 local new_nick = to;
|
|
|
238 if self._participants[to] then
|
|
|
239 new_nick = nil;
|
|
|
240 end
|
|
|
241 if not new_nick then
|
|
|
242 log("debug", "%s couldn't join due to nick conflict: %s", from, to);
|
|
|
243 origin.send(st.error_reply(stanza, "cancel", "conflict"):tag("x", {xmlns = "http://jabber.org/protocol/muc"}));
|
|
|
244 else
|
|
|
245 log("debug", "%s joining as %s", from, to);
|
|
|
246 local data;
|
|
|
247 -- if not rooms:get(room) and not rooms_info:get(room) then -- new room
|
|
|
248 -- rooms_info:set(room, 'name', (jid_split(room)));
|
|
|
249 -- data = {affiliation='owner', role='moderator', jid=from, sessions={[from]=get_filtered_presence(stanza)}};
|
|
|
250 -- end
|
|
|
251 if not data then -- new occupant
|
|
|
252 data = {affiliation='none', role='participant', jid=from, sessions={[from]=get_filtered_presence(stanza)}};
|
|
|
253 end
|
|
|
254 self._participants[to] = data;
|
|
|
255 self._jid_nick[from] = to;
|
|
|
256 room_send_occupant_list(self, from);
|
|
|
257 pr.attr.from = to;
|
|
|
258 room_broadcast_presence(self, pr);
|
|
|
259 room_send_history(self, from);
|
|
|
260 end
|
|
|
261 end
|
|
|
262 elseif type ~= 'result' then -- bad type
|
|
|
263 origin.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME correct error?
|
|
|
264 end
|
|
|
265 elseif not current_nick and type ~= "error" and type ~= "result" then -- not in room
|
|
|
266 origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
|
|
|
267 elseif stanza.name == "message" and type == "groupchat" then -- groupchat messages not allowed in PM
|
|
|
268 origin.send(st.error_reply(stanza, "modify", "bad-request"));
|
|
|
269 elseif stanza.name == "message" and type == "error" and get_kickable_error(stanza) then
|
|
|
270 log("debug", "%s kicked from %s for sending an error message", current_nick, room);
|
|
|
271 room_handle_to_occupant(self, 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
|
|
|
272 else -- private stanza
|
|
|
273 local o_data = self._participants[to];
|
|
|
274 if o_data then
|
|
|
275 log("debug", "%s sent private stanza to %s (%s)", from, to, o_data.jid);
|
|
|
276 local jid = o_data.jid;
|
|
|
277 -- TODO if stanza.name=='iq' and type=='get' and stanza.tags[1].attr.xmlns == 'vcard-temp' then jid = jid_bare(jid); end
|
|
|
278 stanza.attr.to, stanza.attr.from = jid, current_nick;
|
|
|
279 self:route_stanza(stanza);
|
|
|
280 elseif type ~= "error" and type ~= "result" then -- recipient not in room
|
|
|
281 origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Recipient not in room"));
|
|
|
282 end
|
|
|
283 end
|
|
|
284 end
|
|
|
285
|
|
|
286 local function room_handle_to_room(self, origin, stanza) -- presence changes and groupchat messages, along with disco/etc
|
|
|
287 local type = stanza.attr.type;
|
|
|
288 if stanza.name == "iq" and type == "get" then -- disco requests
|
|
|
289 local xmlns = stanza.tags[1].attr.xmlns;
|
|
|
290 if xmlns == "http://jabber.org/protocol/disco#info" then
|
|
|
291 origin.send(room_get_disco_info(self, stanza));
|
|
|
292 elseif xmlns == "http://jabber.org/protocol/disco#items" then
|
|
|
293 origin.send(room_get_disco_items(self, stanza));
|
|
|
294 else
|
|
|
295 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
|
|
|
296 end
|
|
|
297 elseif stanza.name == "message" and type == "groupchat" then
|
|
|
298 local from, to = stanza.attr.from, stanza.attr.to;
|
|
|
299 local room = jid_bare(to);
|
|
|
300 local current_nick = self._jid_nick[from];
|
|
|
301 if not current_nick then -- not in room
|
|
|
302 origin.send(st.error_reply(stanza, "cancel", "not-acceptable"));
|
|
|
303 else
|
|
|
304 local from = stanza.attr.from;
|
|
|
305 stanza.attr.from = current_nick;
|
|
|
306 local subject = getText(stanza, {"subject"});
|
|
|
307 if subject then
|
|
|
308 self:set_subject(current_nick, subject); -- TODO use broadcast_message_stanza
|
|
|
309 else
|
|
|
310 room_broadcast_message(self, stanza, true);
|
|
|
311 end
|
|
|
312 end
|
|
|
313 elseif stanza.name == "presence" then -- hack - some buggy clients send presence updates to the room rather than their nick
|
|
|
314 local to = stanza.attr.to;
|
|
|
315 local current_nick = self._jid_nick[stanza.attr.from];
|
|
|
316 if current_nick then
|
|
|
317 stanza.attr.to = current_nick;
|
|
|
318 room_handle_to_occupant(self, origin, stanza);
|
|
|
319 stanza.attr.to = to;
|
|
|
320 elseif type ~= "error" and type ~= "result" then
|
|
|
321 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
|
|
|
322 end
|
|
|
323 elseif stanza.name == "message" and not stanza.attr.type and #stanza.tags == 1 and self._jid_nick[stanza.attr.from]
|
|
|
324 and stanza.tags[1].name == "x" and stanza.tags[1].attr.xmlns == "http://jabber.org/protocol/muc#user" and #stanza.tags[1].tags == 1
|
|
|
325 and stanza.tags[1].tags[1].name == "invite" and stanza.tags[1].tags[1].attr.to then
|
|
|
326 local _from, _to = stanza.attr.from, stanza.attr.to;
|
|
|
327 local _invitee = stanza.tags[1].tags[1].attr.to;
|
|
|
328 stanza.attr.from, stanza.attr.to = _to, _invitee;
|
|
|
329 stanza.tags[1].tags[1].attr.from, stanza.tags[1].tags[1].attr.to = _from, nil;
|
|
|
330 self:route_stanza(stanza);
|
|
|
331 stanza.tags[1].tags[1].attr.from, stanza.tags[1].tags[1].attr.to = nil, _invitee;
|
|
|
332 stanza.attr.from, stanza.attr.to = _from, _to;
|
|
|
333 else
|
|
|
334 if type == "error" or type == "result" then return; end
|
|
|
335 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
|
|
|
336 end
|
|
|
337 end
|
|
|
338
|
|
|
339 local function room_handle_stanza(self, origin, stanza)
|
|
|
340 local to_node, to_host, to_resource = jid_split(stanza.attr.to);
|
|
|
341 if to_resource then
|
|
|
342 room_handle_to_occupant(self, origin, stanza);
|
|
|
343 else
|
|
|
344 room_handle_to_room(self, origin, stanza);
|
|
|
345 end
|
|
|
346 end
|
|
|
347
|
|
|
348 module "muc"
|
|
|
349
|
|
|
350 function new_room(jid)
|
|
|
351 return {
|
|
|
352 jid = jid;
|
|
|
353 handle_stanza = room_handle_stanza;
|
|
|
354 set_subject = room_set_subject;
|
|
|
355 route_stanza = function(room, stanza) end; -- Replace with a routing function, e.g., function(room, stanza) core_route_stanza(origin, stanza); end
|
|
|
356 _jid_nick = {};
|
|
|
357 _participants = {};
|
|
|
358 _data = {};
|
|
|
359 }
|
|
|
360 end
|
|
|
361
|
|
|
362 return _M;
|
|
|
363
|
|
|
364 --[[function get_disco_info(stanza)
|
|
|
365 return st.iq({type='result', id=stanza.attr.id, from=muc_domain, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")
|
|
|
366 :tag("identity", {category='conference', type='text', name=muc_name}):up()
|
|
|
367 :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply
|
|
|
368 end
|
|
|
369 function get_disco_items(stanza)
|
|
|
370 local reply = st.iq({type='result', id=stanza.attr.id, from=muc_domain, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");
|
|
|
371 for room in pairs(rooms_info:get()) do
|
|
|
372 reply:tag("item", {jid=room, name=rooms_info:get(room, "name")}):up();
|
|
|
373 end
|
|
|
374 return reply; -- TODO cache disco reply
|
|
|
375 end]]
|
|
|
376
|
|
|
377 --[[function handle_to_domain(origin, stanza)
|
|
|
378 local type = stanza.attr.type;
|
|
|
379 if type == "error" or type == "result" then return; end
|
|
|
380 if stanza.name == "iq" and type == "get" then
|
|
|
381 local xmlns = stanza.tags[1].attr.xmlns;
|
|
|
382 if xmlns == "http://jabber.org/protocol/disco#info" then
|
|
|
383 origin.send(get_disco_info(stanza));
|
|
|
384 elseif xmlns == "http://jabber.org/protocol/disco#items" then
|
|
|
385 origin.send(get_disco_items(stanza));
|
|
|
386 else
|
|
|
387 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc
|
|
|
388 end
|
|
|
389 else
|
|
|
390 origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "The muc server doesn't deal with messages and presence directed at it"));
|
|
|
391 end
|
|
|
392 end
|
|
|
393
|
|
|
394 register_component(muc_domain, function(origin, stanza)
|
|
|
395 local to_node, to_host, to_resource = jid_split(stanza.attr.to);
|
|
|
396 if to_resource and not to_node then
|
|
|
397 if type == "error" or type == "result" then return; end
|
|
|
398 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- host/resource
|
|
|
399 elseif to_resource then
|
|
|
400 handle_to_occupant(origin, stanza);
|
|
|
401 elseif to_node then
|
|
|
402 handle_to_room(origin, stanza)
|
|
|
403 else -- to the main muc domain
|
|
|
404 if type == "error" or type == "result" then return; end
|
|
|
405 handle_to_domain(origin, stanza);
|
|
|
406 end
|
|
|
407 end);]]
|
|
|
408
|
|
|
409 --[[module.unload = function()
|
|
|
410 deregister_component(muc_domain);
|
|
|
411 end
|
|
|
412 module.save = function()
|
|
|
413 return {rooms = rooms.data; jid_nick = jid_nick.data; rooms_info = rooms_info.data; persist_list = persist_list};
|
|
|
414 end
|
|
|
415 module.restore = function(data)
|
|
|
416 rooms.data, jid_nick.data, rooms_info.data, persist_list =
|
|
|
417 data.rooms or {}, data.jid_nick or {}, data.rooms_info or {}, data.persist_list or {};
|
|
|
418 end]]
|
