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plugins/mod_presence.lua @ 1279:fa00d56a9fd3
mod_presence: Handle all outbound presence stanzas
author | Waqas Hussain <waqas20@gmail.com> |
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date | Tue, 02 Jun 2009 15:53:04 +0500 |
parent | 1278:2abf85791f29 |
child | 1280:e360fef8882b |
rev | line source |
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1009 | 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 | |
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9 local log = module._log; |
1009 | 10 |
11 local require = require; | |
12 local pairs, ipairs = pairs, ipairs; | |
13 local t_concat = table.concat; | |
14 local s_find = string.find; | |
15 local tonumber = tonumber; | |
16 | |
17 local st = require "util.stanza"; | |
18 local jid_split = require "util.jid".split; | |
19 local jid_bare = require "util.jid".bare; | |
20 local hosts = hosts; | |
21 | |
22 local rostermanager = require "core.rostermanager"; | |
23 local sessionmanager = require "core.sessionmanager"; | |
24 local offlinemanager = require "core.offlinemanager"; | |
25 | |
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26 local _core_route_stanza = core_route_stanza; |
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27 local core_route_stanza; |
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28 function core_route_stanza(origin, stanza) |
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29 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" then |
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30 local node, host = jid_split(stanza.attr.to); |
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31 host = hosts[host]; |
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32 if host and host.type == "local" then |
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33 handle_inbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to), core_route_stanza); |
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34 return; |
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35 end |
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36 end |
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37 _core_route_stanza(origin, stanza); |
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38 end |
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39 |
1009 | 40 function handle_presence(origin, stanza, from_bare, to_bare, core_route_stanza, inbound) |
41 local type = stanza.attr.type; | |
42 if type and type ~= "unavailable" and type ~= "error" then | |
43 if inbound then | |
44 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); | |
45 else | |
46 handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); | |
47 end | |
48 elseif not inbound and not stanza.attr.to then | |
49 handle_normal_presence(origin, stanza, core_route_stanza); | |
50 else | |
51 core_route_stanza(origin, stanza); | |
52 end | |
53 end | |
54 | |
55 function handle_normal_presence(origin, stanza, core_route_stanza) | |
56 if origin.roster then | |
57 for jid in pairs(origin.roster) do -- broadcast to all interested contacts | |
58 local subscription = origin.roster[jid].subscription; | |
59 if subscription == "both" or subscription == "from" then | |
60 stanza.attr.to = jid; | |
61 core_route_stanza(origin, stanza); | |
62 end | |
63 end | |
64 local node, host = jid_split(stanza.attr.from); | |
65 for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast to all resources | |
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66 if res ~= origin and res.presence then -- to resource |
1009 | 67 stanza.attr.to = res.full_jid; |
68 core_route_stanza(origin, stanza); | |
69 end | |
70 end | |
71 if stanza.attr.type == nil and not origin.presence then -- initial presence | |
72 local probe = st.presence({from = origin.full_jid, type = "probe"}); | |
73 for jid in pairs(origin.roster) do -- probe all contacts we are subscribed to | |
74 local subscription = origin.roster[jid].subscription; | |
75 if subscription == "both" or subscription == "to" then | |
76 probe.attr.to = jid; | |
77 core_route_stanza(origin, probe); | |
78 end | |
79 end | |
80 for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast from all available resources | |
81 if res ~= origin and res.presence then | |
82 res.presence.attr.to = origin.full_jid; | |
83 core_route_stanza(res, res.presence); | |
84 res.presence.attr.to = nil; | |
85 end | |
86 end | |
87 if origin.roster.pending then -- resend incoming subscription requests | |
88 for jid in pairs(origin.roster.pending) do | |
89 origin.send(st.presence({type="subscribe", from=jid})); -- TODO add to attribute? Use original? | |
90 end | |
91 end | |
92 local request = st.presence({type="subscribe", from=origin.username.."@"..origin.host}); | |
93 for jid, item in pairs(origin.roster) do -- resend outgoing subscription requests | |
94 if item.ask then | |
95 request.attr.to = jid; | |
96 core_route_stanza(origin, request); | |
97 end | |
98 end | |
99 local offline = offlinemanager.load(node, host); | |
100 if offline then | |
101 for _, msg in ipairs(offline) do | |
102 origin.send(msg); -- FIXME do we need to modify to/from in any way? | |
103 end | |
104 offlinemanager.deleteAll(node, host); | |
105 end | |
106 end | |
107 origin.priority = 0; | |
108 if stanza.attr.type == "unavailable" then | |
109 origin.presence = nil; | |
110 if origin.directed then | |
111 local old_from = stanza.attr.from; | |
112 stanza.attr.from = origin.full_jid; | |
113 for jid in pairs(origin.directed) do | |
114 stanza.attr.to = jid; | |
115 core_route_stanza(origin, stanza); | |
116 end | |
117 stanza.attr.from = old_from; | |
118 origin.directed = nil; | |
119 end | |
120 else | |
121 origin.presence = stanza; | |
122 local priority = stanza:child_with_name("priority"); | |
123 if priority and #priority > 0 then | |
124 priority = t_concat(priority); | |
125 if s_find(priority, "^[+-]?[0-9]+$") then | |
126 priority = tonumber(priority); | |
127 if priority < -128 then priority = -128 end | |
128 if priority > 127 then priority = 127 end | |
129 origin.priority = priority; | |
130 end | |
131 end | |
132 end | |
133 stanza.attr.to = nil; -- reset it | |
134 else | |
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135 log("warn", "presence recieved from client with no roster"); |
1009 | 136 end |
137 end | |
138 | |
139 function send_presence_of_available_resources(user, host, jid, recipient_session, core_route_stanza) | |
140 local h = hosts[host]; | |
141 local count = 0; | |
142 if h and h.type == "local" then | |
143 local u = h.sessions[user]; | |
144 if u then | |
145 for k, session in pairs(u.sessions) do | |
146 local pres = session.presence; | |
147 if pres then | |
148 pres.attr.to = jid; | |
149 core_route_stanza(session, pres); | |
150 pres.attr.to = nil; | |
151 count = count + 1; | |
152 end | |
153 end | |
154 end | |
155 end | |
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156 log("debug", "broadcasted presence of "..count.." resources from "..user.."@"..host.." to "..jid); |
1009 | 157 return count; |
158 end | |
159 | |
160 function handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza) | |
161 local node, host = jid_split(from_bare); | |
162 local st_from, st_to = stanza.attr.from, stanza.attr.to; | |
163 stanza.attr.from, stanza.attr.to = from_bare, to_bare; | |
164 log("debug", "outbound presence "..stanza.attr.type.." from "..from_bare.." for "..to_bare); | |
165 if stanza.attr.type == "subscribe" then | |
166 -- 1. route stanza | |
167 -- 2. roster push (subscription = none, ask = subscribe) | |
168 if rostermanager.set_contact_pending_out(node, host, to_bare) then | |
169 rostermanager.roster_push(node, host, to_bare); | |
170 end -- else file error | |
171 core_route_stanza(origin, stanza); | |
172 elseif stanza.attr.type == "unsubscribe" then | |
173 -- 1. route stanza | |
174 -- 2. roster push (subscription = none or from) | |
175 if rostermanager.unsubscribe(node, host, to_bare) then | |
176 rostermanager.roster_push(node, host, to_bare); -- FIXME do roster push when roster has in fact not changed? | |
177 end -- else file error | |
178 core_route_stanza(origin, stanza); | |
179 elseif stanza.attr.type == "subscribed" then | |
180 -- 1. route stanza | |
181 -- 2. roster_push () | |
182 -- 3. send_presence_of_available_resources | |
183 if rostermanager.subscribed(node, host, to_bare) then | |
184 rostermanager.roster_push(node, host, to_bare); | |
185 end | |
186 core_route_stanza(origin, stanza); | |
187 send_presence_of_available_resources(node, host, to_bare, origin, core_route_stanza); | |
188 elseif stanza.attr.type == "unsubscribed" then | |
189 -- 1. route stanza | |
190 -- 2. roster push (subscription = none or to) | |
191 if rostermanager.unsubscribed(node, host, to_bare) then | |
192 rostermanager.roster_push(node, host, to_bare); | |
193 end | |
194 core_route_stanza(origin, stanza); | |
195 end | |
196 stanza.attr.from, stanza.attr.to = st_from, st_to; | |
197 end | |
198 | |
199 function handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza) | |
200 local node, host = jid_split(to_bare); | |
201 local st_from, st_to = stanza.attr.from, stanza.attr.to; | |
202 stanza.attr.from, stanza.attr.to = from_bare, to_bare; | |
203 log("debug", "inbound presence "..stanza.attr.type.." from "..from_bare.." for "..to_bare); | |
204 if stanza.attr.type == "probe" then | |
205 if rostermanager.is_contact_subscribed(node, host, from_bare) then | |
206 if 0 == send_presence_of_available_resources(node, host, from_bare, origin, core_route_stanza) then | |
207 -- TODO send last recieved unavailable presence (or we MAY do nothing, which is fine too) | |
208 end | |
209 else | |
210 core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="unsubscribed"})); | |
211 end | |
212 elseif stanza.attr.type == "subscribe" then | |
213 if rostermanager.is_contact_subscribed(node, host, from_bare) then | |
214 core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="subscribed"})); -- already subscribed | |
215 -- Sending presence is not clearly stated in the RFC, but it seems appropriate | |
216 if 0 == send_presence_of_available_resources(node, host, from_bare, origin, core_route_stanza) then | |
217 -- TODO send last recieved unavailable presence (or we MAY do nothing, which is fine too) | |
218 end | |
219 else | |
220 if not rostermanager.is_contact_pending_in(node, host, from_bare) then | |
221 if rostermanager.set_contact_pending_in(node, host, from_bare) then | |
222 sessionmanager.send_to_available_resources(node, host, stanza); | |
223 end -- TODO else return error, unable to save | |
224 end | |
225 end | |
226 elseif stanza.attr.type == "unsubscribe" then | |
227 if rostermanager.process_inbound_unsubscribe(node, host, from_bare) then | |
228 rostermanager.roster_push(node, host, from_bare); | |
229 end | |
230 elseif stanza.attr.type == "subscribed" then | |
231 if rostermanager.process_inbound_subscription_approval(node, host, from_bare) then | |
232 rostermanager.roster_push(node, host, from_bare); | |
233 end | |
234 elseif stanza.attr.type == "unsubscribed" then | |
235 if rostermanager.process_inbound_subscription_cancellation(node, host, from_bare) then | |
236 rostermanager.roster_push(node, host, from_bare); | |
237 end | |
238 end -- discard any other type | |
239 stanza.attr.from, stanza.attr.to = st_from, st_to; | |
240 end | |
241 | |
242 local function presence_handler(data) | |
243 local origin, stanza = data.origin, data.stanza; | |
244 local to = stanza.attr.to; | |
245 local node, host = jid_split(to); | |
246 local to_bare = jid_bare(to); | |
247 local from_bare = jid_bare(stanza.attr.from); | |
248 if origin.type == "c2s" then | |
249 if to ~= nil and not(origin.roster[to_bare] and (origin.roster[to_bare].subscription == "both" or origin.roster[to_bare].subscription == "from")) then -- directed presence | |
250 origin.directed = origin.directed or {}; | |
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251 origin.directed[to] = true; -- FIXME does it make more sense to add to_bare rather than to? |
1009 | 252 end |
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253 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" then |
1009 | 254 handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
255 elseif not to then | |
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256 handle_normal_presence(origin, stanza, core_route_stanza); |
1009 | 257 else |
258 core_route_stanza(origin, stanza); | |
259 end | |
260 elseif (origin.type == "s2sin" or origin.type == "component") and hosts[host] then | |
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261 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" then |
1009 | 262 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
263 else | |
264 core_route_stanza(origin, stanza); | |
265 end | |
266 end | |
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267 return true; |
1009 | 268 end |
269 | |
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270 prosody.events.add_handler(module:get_host().."/presence", presence_handler); |
1009 | 271 module.unload = function() |
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272 prosody.events.remove_handler(module:get_host().."/presence", presence_handler); |
1009 | 273 end |
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274 |
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275 local outbound_presence_handler = function(data) |
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276 -- outbound presence to full JID recieved |
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277 local origin, stanza = data.origin, data.stanza; |
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278 |
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279 local t = stanza.attr.type; |
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280 if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes sent to full JID |
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281 handle_outbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to), core_route_stanza); |
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282 return true; |
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283 end |
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284 |
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285 local to = stanza.attr.to; |
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286 local to_bare = jid_bare(to); |
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287 if not(origin.roster[to_bare] and (origin.roster[to_bare].subscription == "both" or origin.roster[to_bare].subscription == "from")) then -- directed presence |
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288 origin.directed = origin.directed or {}; |
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289 if t then -- removing from directed presence list on sending an error or unavailable |
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290 origin.directed[to] = nil; -- FIXME does it make more sense to add to_bare rather than to? |
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291 else |
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292 origin.directed[to] = true; -- FIXME does it make more sense to add to_bare rather than to? |
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293 end |
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294 end |
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295 end |
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296 |
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297 module:hook("pre-presence/full", outbound_presence_handler); |
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298 module:hook("pre-presence/bare", outbound_presence_handler); |
fa00d56a9fd3
mod_presence: Handle all outbound presence stanzas
Waqas Hussain <waqas20@gmail.com>
parents:
1278
diff
changeset
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299 module:hook("pre-presence/host", outbound_presence_handler); |