Sun, 05 Oct 2008 19:10:21 +0100
Working TLS!
30 | 1 | |
2 | -- The code in this file should be self-explanatory, though the logic is horrible | |
3 | -- for more info on that, see doc/stanza_routing.txt, which attempts to condense | |
4 | -- the rules from the RFCs (mainly 3921) | |
5 | ||
6 | require "core.servermanager" | |
7 | ||
8 | local log = require "util.logger".init("stanzarouter") | |
9 | ||
10 | require "util.jid" | |
11 | local jid_split = jid.split; | |
12 | ||
13 | function core_process_stanza(origin, stanza) | |
66 | 14 | log("debug", "Received: "..tostring(stanza)) |
30 | 15 | local to = stanza.attr.to; |
16 | ||
17 | if not to or (hosts[to] and hosts[to].type == "local") then | |
18 | core_handle_stanza(origin, stanza); | |
19 | elseif origin.type == "c2s" then | |
20 | core_route_stanza(origin, stanza); | |
21 | end | |
22 | ||
23 | end | |
24 | ||
25 | function core_handle_stanza(origin, stanza) | |
26 | -- Handlers | |
27 | if origin.type == "c2s" or origin.type == "c2s_unauthed" then | |
28 | local session = origin; | |
29 | stanza.attr.from = session.full_jid; | |
30 | ||
31 | log("debug", "Routing stanza"); | |
32 | -- Stanza has no to attribute | |
33 | --local to_node, to_host, to_resource = jid_split(stanza.attr.to); | |
34 | --if not to_host then error("Invalid destination JID: "..string.format("{ %q, %q, %q } == %q", to_node or "", to_host or "", to_resource or "", stanza.attr.to or "nil")); end | |
35 | ||
36 | -- Stanza is to this server, or a user on this server | |
37 | log("debug", "Routing stanza to local"); | |
38 | handle_stanza(session, stanza); | |
39 | end | |
40 | end | |
41 | ||
42 | function core_route_stanza(origin, stanza) | |
43 | -- Hooks | |
44 | -- Deliver | |
45 | end | |
46 | ||
47 | function handle_stanza_nodest(stanza) | |
48 | if stanza.name == "iq" then | |
49 | handle_stanza_iq_no_to(session, stanza); | |
50 | elseif stanza.name == "presence" then | |
51 | -- Broadcast to this user's contacts | |
52 | handle_stanza_presence_broadcast(session, stanza); | |
53 | -- also, if it is initial presence, send out presence probes | |
54 | if not session.last_presence then | |
55 | handle_stanza_presence_probe_broadcast(session, stanza); | |
56 | end | |
57 | session.last_presence = stanza; | |
58 | elseif stanza.name == "message" then | |
59 | -- Treat as if message was sent to bare JID of the sender | |
60 | handle_stanza_to_local_user(stanza); | |
61 | end | |
62 | end | |
63 | ||
64 | function handle_stanza_tolocal(stanza) | |
65 | local node, host, resource = jid.split(stanza.attr.to); | |
66 | if host and hosts[host] and hosts[host].type == "local" then | |
67 | -- Is a local host, handle internally | |
68 | if node then | |
69 | -- Is a local user, send to their session | |
70 | log("debug", "Routing stanza to %s@%s", node, host); | |
71 | if not session.username then return; end --FIXME: Correct response when trying to use unauthed stream is what? | |
72 | handle_stanza_to_local_user(stanza); | |
73 | else | |
74 | -- Is sent to this server, let's handle it... | |
75 | log("debug", "Routing stanza to %s", host); | |
76 | handle_stanza_to_server(stanza, session); | |
77 | end | |
78 | end | |
79 | end | |
80 | ||
81 | function handle_stanza_toremote(stanza) | |
82 | log("error", "Stanza bound for remote host, but s2s is not implemented"); | |
83 | end | |
84 | ||
85 | ||
86 | --[[ | |
87 | local function route_c2s_stanza(session, stanza) | |
88 | stanza.attr.from = session.full_jid; | |
89 | if not stanza.attr.to and session.username then | |
90 | -- Has no 'to' attribute, handle internally | |
91 | if stanza.name == "iq" then | |
92 | handle_stanza_iq_no_to(session, stanza); | |
93 | elseif stanza.name == "presence" then | |
94 | -- Broadcast to this user's contacts | |
95 | handle_stanza_presence_broadcast(session, stanza); | |
96 | -- also, if it is initial presence, send out presence probes | |
97 | if not session.last_presence then | |
98 | handle_stanza_presence_probe_broadcast(session, stanza); | |
99 | end | |
100 | session.last_presence = stanza; | |
101 | elseif stanza.name == "message" then | |
102 | -- Treat as if message was sent to bare JID of the sender | |
103 | handle_stanza_to_local_user(stanza); | |
104 | end | |
105 | end | |
106 | local node, host, resource = jid.split(stanza.attr.to); | |
107 | if host and hosts[host] and hosts[host].type == "local" then | |
108 | -- Is a local host, handle internally | |
109 | if node then | |
110 | -- Is a local user, send to their session | |
111 | if not session.username then return; end --FIXME: Correct response when trying to use unauthed stream is what? | |
112 | handle_stanza_to_local_user(stanza); | |
113 | else | |
114 | -- Is sent to this server, let's handle it... | |
115 | handle_stanza_to_server(stanza, session); | |
116 | end | |
117 | else | |
118 | -- Is not for us or a local user, route accordingly | |
119 | route_s2s_stanza(stanza); | |
120 | end | |
121 | end | |
122 | ||
123 | function handle_stanza_no_to(session, stanza) | |
124 | if not stanza.attr.id then log("warn", "<iq> without id attribute is invalid"); end | |
125 | local xmlns = (stanza.tags[1].attr and stanza.tags[1].attr.xmlns); | |
126 | if stanza.attr.type == "get" or stanza.attr.type == "set" then | |
127 | if iq_handlers[xmlns] then | |
128 | if iq_handlers[xmlns](stanza) then return; end; -- If handler returns true, it handled it | |
129 | end | |
130 | -- Oh, handler didn't handle it. Need to send service-unavailable now. | |
131 | log("warn", "Unhandled namespace: "..xmlns); | |
132 | session:send(format("<iq type='error' id='%s'><error type='cancel'><service-unavailable/></error></iq>", stanza.attr.id)); | |
133 | return; -- All done! | |
134 | end | |
135 | end | |
136 | ||
137 | function handle_stanza_to_local_user(stanza) | |
138 | if stanza.name == "message" then | |
139 | handle_stanza_message_to_local_user(stanza); | |
140 | elseif stanza.name == "presence" then | |
141 | handle_stanza_presence_to_local_user(stanza); | |
142 | elseif stanza.name == "iq" then | |
143 | handle_stanza_iq_to_local_user(stanza); | |
144 | end | |
145 | end | |
146 | ||
147 | function handle_stanza_message_to_local_user(stanza) | |
148 | local node, host, resource = stanza.to.node, stanza.to.host, stanza.to.resource; | |
149 | local destuser = hosts[host].sessions[node]; | |
150 | if destuser then | |
151 | if resource and destuser[resource] then | |
152 | destuser[resource]:send(stanza); | |
153 | else | |
154 | -- Bare JID, or resource offline | |
155 | local best_session; | |
156 | for resource, session in pairs(destuser.sessions) do | |
157 | if not best_session then best_session = session; | |
158 | elseif session.priority >= best_session.priority and session.priority >= 0 then | |
159 | best_session = session; | |
160 | end | |
161 | end | |
162 | if not best_session then | |
163 | offlinemessage.new(node, host, stanza); | |
164 | else | |
165 | print("resource '"..resource.."' was not online, have chosen to send to '"..best_session.username.."@"..best_session.host.."/"..best_session.resource.."'"); | |
166 | destuser[best_session]:send(stanza); | |
167 | end | |
168 | end | |
169 | else | |
170 | -- User is offline | |
171 | offlinemessage.new(node, host, stanza); | |
172 | end | |
173 | end | |
174 | ||
175 | function handle_stanza_presence_to_local_user(stanza) | |
176 | local node, host, resource = stanza.to.node, stanza.to.host, stanza.to.resource; | |
177 | local destuser = hosts[host].sessions[node]; | |
178 | if destuser then | |
179 | if resource then | |
180 | if destuser[resource] then | |
181 | destuser[resource]:send(stanza); | |
182 | else | |
183 | return; | |
184 | end | |
185 | else | |
186 | -- Broadcast to all user's resources | |
187 | for resource, session in pairs(destuser.sessions) do | |
188 | session:send(stanza); | |
189 | end | |
190 | end | |
191 | end | |
192 | end | |
193 | ||
194 | function handle_stanza_iq_to_local_user(stanza) | |
195 | ||
196 | end | |
197 | ||
198 | function foo() | |
199 | local node, host, resource = stanza.to.node, stanza.to.host, stanza.to.resource; | |
200 | local destuser = hosts[host].sessions[node]; | |
201 | if destuser and destuser.sessions then | |
202 | -- User online | |
203 | if resource and destuser.sessions[resource] then | |
204 | stanza.to:send(stanza); | |
205 | else | |
206 | --User is online, but specified resource isn't (or no resource specified) | |
207 | local best_session; | |
208 | for resource, session in pairs(destuser.sessions) do | |
209 | if not best_session then best_session = session; | |
210 | elseif session.priority >= best_session.priority and session.priority >= 0 then | |
211 | best_session = session; | |
212 | end | |
213 | end | |
214 | if not best_session then | |
215 | offlinemessage.new(node, host, stanza); | |
216 | else | |
217 | print("resource '"..resource.."' was not online, have chosen to send to '"..best_session.username.."@"..best_session.host.."/"..best_session.resource.."'"); | |
218 | resource = best_session.resource; | |
219 | end | |
220 | end | |
221 | if destuser.sessions[resource] == session then | |
222 | log("warn", "core", "Attempt to send stanza to self, dropping..."); | |
223 | else | |
224 | print("...sending...", tostring(stanza)); | |
225 | --destuser.sessions[resource].conn.write(tostring(data)); | |
226 | print(" to conn ", destuser.sessions[resource].conn); | |
227 | destuser.sessions[resource].conn.write(tostring(stanza)); | |
228 | print("...sent") | |
229 | end | |
230 | elseif stanza.name == "message" then | |
231 | print(" ...will be stored offline"); | |
232 | offlinemessage.new(node, host, stanza); | |
233 | elseif stanza.name == "iq" then | |
234 | print(" ...is an iq"); | |
235 | stanza.from:send(st.reply(stanza) | |
236 | :tag("error", { type = "cancel" }) | |
237 | :tag("service-unavailable", { xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas" })); | |
238 | end | |
239 | end | |
240 | ||
241 | -- Broadcast a presence stanza to all of a user's contacts | |
242 | function handle_stanza_presence_broadcast(session, stanza) | |
243 | if session.roster then | |
244 | local initial_presence = not session.last_presence; | |
245 | session.last_presence = stanza; | |
246 | ||
247 | -- Broadcast presence and probes | |
248 | local broadcast = st.presence({ from = session.full_jid, type = stanza.attr.type }); | |
249 | ||
250 | for child in stanza:childtags() do | |
251 | broadcast:add_child(child); | |
252 | end | |
253 | for contact_jid in pairs(session.roster) do | |
254 | broadcast.attr.to = contact_jid; | |
255 | send_to(contact_jid, broadcast); | |
256 | if initial_presence then | |
257 | local node, host = jid.split(contact_jid); | |
258 | if hosts[host] and hosts[host].type == "local" then | |
259 | local contact = hosts[host].sessions[node] | |
260 | if contact then | |
261 | local pres = st.presence { to = session.full_jid }; | |
262 | for resource, contact_session in pairs(contact.sessions) do | |
263 | if contact_session.last_presence then | |
264 | pres.tags = contact_session.last_presence.tags; | |
265 | pres.attr.from = contact_session.full_jid; | |
266 | send(pres); | |
267 | end | |
268 | end | |
269 | end | |
270 | --FIXME: Do we send unavailable if they are offline? | |
271 | else | |
272 | probe.attr.to = contact; | |
273 | send_to(contact, probe); | |
274 | end | |
275 | end | |
276 | end | |
277 | ||
278 | -- Probe for our contacts' presence | |
279 | end | |
280 | end | |
281 | ||
282 | -- Broadcast presence probes to all of a user's contacts | |
283 | function handle_stanza_presence_probe_broadcast(session, stanza) | |
284 | end | |
285 | ||
286 | -- | |
287 | function handle_stanza_to_server(stanza) | |
288 | end | |
289 | ||
290 | function handle_stanza_iq_no_to(session, stanza) | |
291 | end | |
292 | ]] |