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;
24 local rostermanager = require "core.rostermanager";
25 local sessionmanager = require "core.sessionmanager";
27 local function select_top_resources(user)
29 local recipients = {};
30 for _, session in pairs(user.sessions) do -- find resource with greatest priority
31 if session.presence then
32 -- TODO check active privacy list for session
33 local p = session.priority;
36 recipients = {session};
37 elseif p == priority then
38 t_insert(recipients, session);
44 local function recalc_resource_map(user)
46 user.top_resources = select_top_resources(user);
47 if #user.top_resources == 0 then user.top_resources = nil; end
51 local ignore_presence_priority = module:get_option("ignore_presence_priority");
53 function handle_normal_presence(origin, stanza)
54 if ignore_presence_priority then
55 local priority = stanza:child_with_name("priority");
56 if priority and priority[1] ~= "0" then
57 for i=#priority.tags,1,-1 do priority.tags[i] = nil; end
58 for i=#priority,1,-1 do priority[i] = nil; end
62 local priority = stanza:child_with_name("priority");
63 if priority and #priority > 0 then
64 priority = t_concat(priority);
65 if s_find(priority, "^[+-]?[0-9]+$") then
66 priority = tonumber(priority);
67 if priority < -128 then priority = -128 end
68 if priority > 127 then priority = 127 end
69 else priority = 0; end
70 else priority = 0; end
71 if full_sessions[origin.full_jid] then -- if user is still connected
72 origin.send(stanza); -- reflect their presence back to them
74 local roster = origin.roster;
75 local node, host = origin.username, origin.host;
76 local user = bare_sessions[node.."@"..host];
77 for _, res in pairs(user and user.sessions or NULL) do -- broadcast to all resources
78 if res ~= origin and res.presence then -- to resource
79 stanza.attr.to = res.full_jid;
80 core_post_stanza(origin, stanza, true);
83 for jid, item in pairs(roster) do -- broadcast to all interested contacts
84 if item.subscription == "both" or item.subscription == "from" then
86 core_post_stanza(origin, stanza, true);
89 if stanza.attr.type == nil and not origin.presence then -- initial presence
90 origin.presence = stanza; -- FIXME repeated later
91 local probe = st.presence({from = origin.full_jid, type = "probe"});
92 for jid, item in pairs(roster) do -- probe all contacts we are subscribed to
93 if item.subscription == "both" or item.subscription == "to" then
95 core_post_stanza(origin, probe, true);
98 for _, res in pairs(user and user.sessions or NULL) do -- broadcast from all available resources
99 if res ~= origin and res.presence then
100 res.presence.attr.to = origin.full_jid;
101 core_post_stanza(res, res.presence, true);
102 res.presence.attr.to = nil;
105 if roster.pending then -- resend incoming subscription requests
106 for jid in pairs(roster.pending) do
107 origin.send(st.presence({type="subscribe", from=jid})); -- TODO add to attribute? Use original?
110 local request = st.presence({type="subscribe", from=origin.username.."@"..origin.host});
111 for jid, item in pairs(roster) do -- resend outgoing subscription requests
113 request.attr.to = jid;
114 core_post_stanza(origin, request, true);
118 if priority >= 0 then
119 local event = { origin = origin }
120 module:fire_event('message/offline/broadcast', event);
123 if stanza.attr.type == "unavailable" then
124 origin.presence = nil;
125 if origin.priority then
126 origin.priority = nil;
127 recalc_resource_map(user);
129 if origin.directed then
130 for jid in pairs(origin.directed) do
131 stanza.attr.to = jid;
132 core_post_stanza(origin, stanza, true);
134 origin.directed = nil;
137 origin.presence = stanza;
138 if origin.priority ~= priority then
139 origin.priority = priority;
140 recalc_resource_map(user);
143 stanza.attr.to = nil; -- reset it
146 function send_presence_of_available_resources(user, host, jid, recipient_session, stanza)
147 local h = hosts[host];
149 if h and h.type == "local" then
150 local u = h.sessions[user];
152 for k, session in pairs(u.sessions) do
153 local pres = session.presence;
155 if stanza then pres = stanza; pres.attr.from = session.full_jid; end
157 core_post_stanza(session, pres, true);
164 log("debug", "broadcasted presence of %d resources from %s@%s to %s", count, user, host, jid);
168 function handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare)
169 local node, host = jid_split(from_bare);
170 if to_bare == from_bare then return; end -- No self contacts
171 local st_from, st_to = stanza.attr.from, stanza.attr.to;
172 stanza.attr.from, stanza.attr.to = from_bare, to_bare;
173 log("debug", "outbound presence %s from %s for %s", stanza.attr.type, from_bare, to_bare);
174 if stanza.attr.type == "probe" then
175 stanza.attr.from, stanza.attr.to = st_from, st_to;
177 elseif stanza.attr.type == "subscribe" then
179 -- 2. roster push (subscription = none, ask = subscribe)
180 if rostermanager.set_contact_pending_out(node, host, to_bare) then
181 rostermanager.roster_push(node, host, to_bare);
182 end -- else file error
183 core_post_stanza(origin, stanza);
184 elseif stanza.attr.type == "unsubscribe" then
186 -- 2. roster push (subscription = none or from)
187 if rostermanager.unsubscribe(node, host, to_bare) then
188 rostermanager.roster_push(node, host, to_bare); -- FIXME do roster push when roster has in fact not changed?
189 end -- else file error
190 core_post_stanza(origin, stanza);
191 elseif stanza.attr.type == "subscribed" then
194 -- 3. send_presence_of_available_resources
195 if rostermanager.subscribed(node, host, to_bare) then
196 rostermanager.roster_push(node, host, to_bare);
198 core_post_stanza(origin, stanza);
199 send_presence_of_available_resources(node, host, to_bare, origin);
200 elseif stanza.attr.type == "unsubscribed" then
201 -- 1. send unavailable
203 -- 3. roster push (subscription = from or both)
204 local success, pending_in, subscribed = rostermanager.unsubscribed(node, host, to_bare);
207 rostermanager.roster_push(node, host, to_bare);
209 core_post_stanza(origin, stanza);
211 send_presence_of_available_resources(node, host, to_bare, origin, st.presence({ type = "unavailable" }));
215 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid presence type"));
217 stanza.attr.from, stanza.attr.to = st_from, st_to;
221 function handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare)
222 local node, host = jid_split(to_bare);
223 local st_from, st_to = stanza.attr.from, stanza.attr.to;
224 stanza.attr.from, stanza.attr.to = from_bare, to_bare;
225 log("debug", "inbound presence %s from %s for %s", stanza.attr.type, from_bare, to_bare);
227 if stanza.attr.type == "probe" then
228 local result, err = rostermanager.is_contact_subscribed(node, host, from_bare);
230 if 0 == send_presence_of_available_resources(node, host, st_from, origin) then
231 core_post_stanza(hosts[host], st.presence({from=to_bare, to=st_from, type="unavailable"}), true); -- TODO send last activity
234 core_post_stanza(hosts[host], st.presence({from=to_bare, to=from_bare, type="unsubscribed"}), true);
236 elseif stanza.attr.type == "subscribe" then
237 if rostermanager.is_contact_subscribed(node, host, from_bare) then
238 core_post_stanza(hosts[host], st.presence({from=to_bare, to=from_bare, type="subscribed"}), true); -- already subscribed
239 -- Sending presence is not clearly stated in the RFC, but it seems appropriate
240 if 0 == send_presence_of_available_resources(node, host, from_bare, origin) then
241 core_post_stanza(hosts[host], st.presence({from=to_bare, to=from_bare, type="unavailable"}), true); -- TODO send last activity
244 core_post_stanza(hosts[host], st.presence({from=to_bare, to=from_bare, type="unavailable"}), true); -- acknowledging receipt
245 if not rostermanager.is_contact_pending_in(node, host, from_bare) then
246 if rostermanager.set_contact_pending_in(node, host, from_bare) then
247 sessionmanager.send_to_available_resources(node, host, stanza);
248 end -- TODO else return error, unable to save
251 elseif stanza.attr.type == "unsubscribe" then
252 if rostermanager.process_inbound_unsubscribe(node, host, from_bare) then
253 sessionmanager.send_to_interested_resources(node, host, stanza);
254 rostermanager.roster_push(node, host, from_bare);
256 elseif stanza.attr.type == "subscribed" then
257 if rostermanager.process_inbound_subscription_approval(node, host, from_bare) then
258 sessionmanager.send_to_interested_resources(node, host, stanza);
259 rostermanager.roster_push(node, host, from_bare);
261 elseif stanza.attr.type == "unsubscribed" then
262 if rostermanager.process_inbound_subscription_cancellation(node, host, from_bare) then
263 sessionmanager.send_to_interested_resources(node, host, stanza);
264 rostermanager.roster_push(node, host, from_bare);
267 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid presence type"));
269 stanza.attr.from, stanza.attr.to = st_from, st_to;
273 local outbound_presence_handler = function(data)
274 -- outbound presence recieved
275 local origin, stanza = data.origin, data.stanza;
277 local to = stanza.attr.to;
279 local t = stanza.attr.type;
280 if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes
281 return handle_outbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to));
284 local to_bare = jid_bare(to);
285 local roster = origin.roster;
286 if roster and not(roster[to_bare] and (roster[to_bare].subscription == "both" or roster[to_bare].subscription == "from")) then -- directed presence
287 origin.directed = origin.directed or {};
288 if t then -- removing from directed presence list on sending an error or unavailable
289 origin.directed[to] = nil; -- FIXME does it make more sense to add to_bare rather than to?
291 origin.directed[to] = true; -- FIXME does it make more sense to add to_bare rather than to?
294 end -- TODO maybe handle normal presence here, instead of letting it pass to incoming handlers?
297 module:hook("pre-presence/full", outbound_presence_handler);
298 module:hook("pre-presence/bare", outbound_presence_handler);
299 module:hook("pre-presence/host", outbound_presence_handler);
301 module:hook("presence/bare", function(data)
302 -- inbound presence to bare JID recieved
303 local origin, stanza = data.origin, data.stanza;
305 local to = stanza.attr.to;
306 local t = stanza.attr.type;
308 if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes sent to bare JID
309 return handle_inbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to));
312 local user = bare_sessions[to];
314 for _, session in pairs(user.sessions) do
315 if session.presence then -- only send to available resources
316 session.send(stanza);
319 end -- no resources not online, discard
320 elseif not t or t == "unavailable" then
321 handle_normal_presence(origin, stanza);
323 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid presence type"));
327 module:hook("presence/full", function(data)
328 -- inbound presence to full JID recieved
329 local origin, stanza = data.origin, data.stanza;
331 local t = stanza.attr.type;
332 if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes sent to full JID
333 return handle_inbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to));
336 local session = full_sessions[stanza.attr.to];
338 -- TODO fire post processing event
339 session.send(stanza);
340 end -- resource not online, discard
343 module:hook("presence/host", function(data)
344 -- inbound presence to the host
345 local origin, stanza = data.origin, data.stanza;
347 local from_bare = jid_bare(stanza.attr.from);
348 local t = stanza.attr.type;
350 core_post_stanza(hosts[module.host], st.presence({ from = module.host, to = from_bare, id = stanza.attr.id }));
351 elseif t == "subscribe" then
352 core_post_stanza(hosts[module.host], st.presence({ from = module.host, to = from_bare, id = stanza.attr.id, type = "subscribed" }));
353 core_post_stanza(hosts[module.host], st.presence({ from = module.host, to = from_bare, id = stanza.attr.id }));
358 module:hook("resource-unbind", function(event)
359 local session, err = event.session, event.error;
360 -- Send unavailable presence
361 if session.presence then
362 local pres = st.presence{ type = "unavailable" };
364 pres:tag("status"):text("Disconnected: "..err):up();
366 session:dispatch_stanza(pres);
367 elseif session.directed then
368 local pres = st.presence{ type = "unavailable", from = session.full_jid };
370 pres:tag("status"):text("Disconnected: "..err):up();
372 for jid in pairs(session.directed) do
374 core_post_stanza(session, pres, true);
376 session.directed = nil;