2 -- Copyright (C) 2008-2010 Matthew Wild
3 -- Copyright (C) 2008-2010 Waqas Hussain
5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information.
9 local log = module._log;
11 local require = require;
12 local pairs, ipairs = pairs, ipairs;
13 local t_concat, t_insert = table.concat, table.insert;
14 local s_find = string.find;
15 local tonumber = tonumber;
17 local core_post_stanza = prosody.core_post_stanza;
18 local st = require "util.stanza";
19 local jid_split = require "util.jid".split;
20 local jid_bare = require "util.jid".bare;
21 local datetime = require "util.datetime";
25 local rostermanager = require "core.rostermanager";
26 local sessionmanager = require "core.sessionmanager";
28 local function select_top_resources(user)
30 local recipients = {};
31 for _, session in pairs(user.sessions) do -- find resource with greatest priority
32 if session.presence then
33 -- TODO check active privacy list for session
34 local p = session.priority;
37 recipients = {session};
38 elseif p == priority then
39 t_insert(recipients, session);
45 local function recalc_resource_map(user)
47 user.top_resources = select_top_resources(user);
48 if #user.top_resources == 0 then user.top_resources = nil; end
52 local ignore_presence_priority = module:get_option("ignore_presence_priority");
54 function handle_normal_presence(origin, stanza)
55 if ignore_presence_priority then
56 local priority = stanza:child_with_name("priority");
57 if priority and priority[1] ~= "0" then
58 for i=#priority.tags,1,-1 do priority.tags[i] = nil; end
59 for i=#priority,1,-1 do priority[i] = nil; end
63 local priority = stanza:child_with_name("priority");
64 if priority and #priority > 0 then
65 priority = t_concat(priority);
66 if s_find(priority, "^[+-]?[0-9]+$") then
67 priority = tonumber(priority);
68 if priority < -128 then priority = -128 end
69 if priority > 127 then priority = 127 end
70 else priority = 0; end
71 else priority = 0; end
72 if full_sessions[origin.full_jid] then -- if user is still connected
73 origin.send(stanza); -- reflect their presence back to them
75 local roster = origin.roster;
76 local node, host = origin.username, origin.host;
77 local user = bare_sessions[node.."@"..host];
78 for _, res in pairs(user and user.sessions or NULL) do -- broadcast to all resources
79 if res ~= origin and res.presence then -- to resource
80 stanza.attr.to = res.full_jid;
81 core_post_stanza(origin, stanza, true);
84 for jid, item in pairs(roster) do -- broadcast to all interested contacts
85 if item.subscription == "both" or item.subscription == "from" then
87 core_post_stanza(origin, stanza, true);
90 if stanza.attr.type == nil and not origin.presence then -- initial presence
91 origin.presence = stanza; -- FIXME repeated later
92 local probe = st.presence({from = origin.full_jid, type = "probe"});
93 for jid, item in pairs(roster) do -- probe all contacts we are subscribed to
94 if item.subscription == "both" or item.subscription == "to" then
96 core_post_stanza(origin, probe, true);
99 for _, res in pairs(user and user.sessions or NULL) do -- broadcast from all available resources
100 if res ~= origin and res.presence then
101 res.presence.attr.to = origin.full_jid;
102 core_post_stanza(res, res.presence, true);
103 res.presence.attr.to = nil;
106 if roster.pending then -- resend incoming subscription requests
107 for jid in pairs(roster.pending) do
108 origin.send(st.presence({type="subscribe", from=jid})); -- TODO add to attribute? Use original?
111 local request = st.presence({type="subscribe", from=origin.username.."@"..origin.host});
112 for jid, item in pairs(roster) do -- resend outgoing subscription requests
114 request.attr.to = jid;
115 core_post_stanza(origin, request, true);
119 if priority >= 0 then
120 local event = { origin = origin }
121 module:fire_event('message/offline/broadcast', event);
124 if stanza.attr.type == "unavailable" then
125 origin.presence = nil;
126 if origin.priority then
127 origin.priority = nil;
128 recalc_resource_map(user);
130 if origin.directed then
131 for jid in pairs(origin.directed) do
132 stanza.attr.to = jid;
133 core_post_stanza(origin, stanza, true);
135 origin.directed = nil;
138 origin.presence = stanza;
139 stanza:tag("delay", { xmlns = "urn:xmpp:delay", from = host, stamp = datetime.datetime() }):up();
140 if origin.priority ~= priority then
141 origin.priority = priority;
142 recalc_resource_map(user);
145 stanza.attr.to = nil; -- reset it
148 function send_presence_of_available_resources(user, host, jid, recipient_session, stanza)
149 local h = hosts[host];
151 if h and h.type == "local" then
152 local u = h.sessions[user];
154 for k, session in pairs(u.sessions) do
155 local pres = session.presence;
157 if stanza then pres = stanza; pres.attr.from = session.full_jid; end
159 core_post_stanza(session, pres, true);
166 log("debug", "broadcasted presence of %d resources from %s@%s to %s", count, user, host, jid);
170 function handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare)
171 local node, host = jid_split(from_bare);
172 if to_bare == from_bare then return; end -- No self contacts
173 local st_from, st_to = stanza.attr.from, stanza.attr.to;
174 stanza.attr.from, stanza.attr.to = from_bare, to_bare;
175 log("debug", "outbound presence %s from %s for %s", stanza.attr.type, from_bare, to_bare);
176 if stanza.attr.type == "probe" then
177 stanza.attr.from, stanza.attr.to = st_from, st_to;
179 elseif stanza.attr.type == "subscribe" then
181 -- 2. roster push (subscription = none, ask = subscribe)
182 if rostermanager.set_contact_pending_out(node, host, to_bare) then
183 rostermanager.roster_push(node, host, to_bare);
184 end -- else file error
185 core_post_stanza(origin, stanza);
186 elseif stanza.attr.type == "unsubscribe" then
188 -- 2. roster push (subscription = none or from)
189 if rostermanager.unsubscribe(node, host, to_bare) then
190 rostermanager.roster_push(node, host, to_bare); -- FIXME do roster push when roster has in fact not changed?
191 end -- else file error
192 core_post_stanza(origin, stanza);
193 elseif stanza.attr.type == "subscribed" then
196 -- 3. send_presence_of_available_resources
197 if rostermanager.subscribed(node, host, to_bare) then
198 rostermanager.roster_push(node, host, to_bare);
200 core_post_stanza(origin, stanza);
201 send_presence_of_available_resources(node, host, to_bare, origin);
202 elseif stanza.attr.type == "unsubscribed" then
203 -- 1. send unavailable
205 -- 3. roster push (subscription = from or both)
206 local success, pending_in, subscribed = rostermanager.unsubscribed(node, host, to_bare);
209 rostermanager.roster_push(node, host, to_bare);
211 core_post_stanza(origin, stanza);
213 send_presence_of_available_resources(node, host, to_bare, origin, st.presence({ type = "unavailable" }));
217 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid presence type"));
219 stanza.attr.from, stanza.attr.to = st_from, st_to;
223 function handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare)
224 local node, host = jid_split(to_bare);
225 local st_from, st_to = stanza.attr.from, stanza.attr.to;
226 stanza.attr.from, stanza.attr.to = from_bare, to_bare;
227 log("debug", "inbound presence %s from %s for %s", stanza.attr.type, from_bare, to_bare);
229 if stanza.attr.type == "probe" then
230 local result, err = rostermanager.is_contact_subscribed(node, host, from_bare);
232 if 0 == send_presence_of_available_resources(node, host, st_from, origin) then
233 core_post_stanza(hosts[host], st.presence({from=to_bare, to=st_from, type="unavailable"}), true); -- TODO send last activity
236 core_post_stanza(hosts[host], st.presence({from=to_bare, to=from_bare, type="unsubscribed"}), true);
238 elseif stanza.attr.type == "subscribe" then
239 if rostermanager.is_contact_subscribed(node, host, from_bare) then
240 core_post_stanza(hosts[host], st.presence({from=to_bare, to=from_bare, type="subscribed"}), true); -- already subscribed
241 -- Sending presence is not clearly stated in the RFC, but it seems appropriate
242 if 0 == send_presence_of_available_resources(node, host, from_bare, origin) then
243 core_post_stanza(hosts[host], st.presence({from=to_bare, to=from_bare, type="unavailable"}), true); -- TODO send last activity
246 core_post_stanza(hosts[host], st.presence({from=to_bare, to=from_bare, type="unavailable"}), true); -- acknowledging receipt
247 if not rostermanager.is_contact_pending_in(node, host, from_bare) then
248 if rostermanager.set_contact_pending_in(node, host, from_bare) then
249 sessionmanager.send_to_available_resources(node, host, stanza);
250 end -- TODO else return error, unable to save
253 elseif stanza.attr.type == "unsubscribe" then
254 if rostermanager.process_inbound_unsubscribe(node, host, from_bare) then
255 sessionmanager.send_to_interested_resources(node, host, stanza);
256 rostermanager.roster_push(node, host, from_bare);
258 elseif stanza.attr.type == "subscribed" then
259 if rostermanager.process_inbound_subscription_approval(node, host, from_bare) then
260 sessionmanager.send_to_interested_resources(node, host, stanza);
261 rostermanager.roster_push(node, host, from_bare);
263 elseif stanza.attr.type == "unsubscribed" then
264 if rostermanager.process_inbound_subscription_cancellation(node, host, from_bare) then
265 sessionmanager.send_to_interested_resources(node, host, stanza);
266 rostermanager.roster_push(node, host, from_bare);
269 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid presence type"));
271 stanza.attr.from, stanza.attr.to = st_from, st_to;
275 local outbound_presence_handler = function(data)
276 -- outbound presence recieved
277 local origin, stanza = data.origin, data.stanza;
279 local to = stanza.attr.to;
281 local t = stanza.attr.type;
282 if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes
283 return handle_outbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to));
286 local to_bare = jid_bare(to);
287 local roster = origin.roster;
288 if roster and not(roster[to_bare] and (roster[to_bare].subscription == "both" or roster[to_bare].subscription == "from")) then -- directed presence
289 origin.directed = origin.directed or {};
290 if t then -- removing from directed presence list on sending an error or unavailable
291 origin.directed[to] = nil; -- FIXME does it make more sense to add to_bare rather than to?
293 origin.directed[to] = true; -- FIXME does it make more sense to add to_bare rather than to?
296 end -- TODO maybe handle normal presence here, instead of letting it pass to incoming handlers?
299 module:hook("pre-presence/full", outbound_presence_handler);
300 module:hook("pre-presence/bare", outbound_presence_handler);
301 module:hook("pre-presence/host", outbound_presence_handler);
303 module:hook("presence/bare", function(data)
304 -- inbound presence to bare JID recieved
305 local origin, stanza = data.origin, data.stanza;
307 local to = stanza.attr.to;
308 local t = stanza.attr.type;
310 if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes sent to bare JID
311 return handle_inbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to));
314 local user = bare_sessions[to];
316 for _, session in pairs(user.sessions) do
317 if session.presence then -- only send to available resources
318 session.send(stanza);
321 end -- no resources not online, discard
322 elseif not t or t == "unavailable" then
323 handle_normal_presence(origin, stanza);
325 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid presence type"));
329 module:hook("presence/full", function(data)
330 -- inbound presence to full JID recieved
331 local origin, stanza = data.origin, data.stanza;
333 local t = stanza.attr.type;
334 if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes sent to full JID
335 return handle_inbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to));
338 local session = full_sessions[stanza.attr.to];
340 -- TODO fire post processing event
341 session.send(stanza);
342 end -- resource not online, discard
345 module:hook("presence/host", function(data)
346 -- inbound presence to the host
347 local origin, stanza = data.origin, data.stanza;
349 local from_bare = jid_bare(stanza.attr.from);
350 local t = stanza.attr.type;
352 core_post_stanza(hosts[module.host], st.presence({ from = module.host, to = from_bare, id = stanza.attr.id }));
353 elseif t == "subscribe" then
354 core_post_stanza(hosts[module.host], st.presence({ from = module.host, to = from_bare, id = stanza.attr.id, type = "subscribed" }));
355 core_post_stanza(hosts[module.host], st.presence({ from = module.host, to = from_bare, id = stanza.attr.id }));
360 module:hook("resource-unbind", function(event)
361 local session, err = event.session, event.error;
362 -- Send unavailable presence
363 if session.presence then
364 local pres = st.presence{ type = "unavailable" };
366 pres:tag("status"):text("Disconnected: "..err):up();
368 session:dispatch_stanza(pres);
369 elseif session.directed then
370 local pres = st.presence{ type = "unavailable", from = session.full_jid };
372 pres:tag("status"):text("Disconnected: "..err):up();
374 for jid in pairs(session.directed) do
376 core_post_stanza(session, pres, true);
378 session.directed = nil;