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core/stanza_router.lua @ 69:5b664c8fef86
forgot to commit mod_tls, oops :)
| author | Matthew Wild <mwild1@gmail.com> |
|---|---|
| date | Tue, 07 Oct 2008 23:13:30 +0100 |
| parent | 68:ceb7a55676a4 |
| child | 71:fbb4ef1da82e |
| rev | line source |
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| 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 | |
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44 --- ...later |
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45 |
| 30 | 46 -- Deliver |
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47 local node, host, resource = jid_split(stanza.attr.to); |
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48 local host_session = hosts[host] |
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49 if host_session and host_session.type == "local" then |
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50 -- Local host |
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51 else |
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52 -- Remote host |
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53 if host_session then |
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54 -- Send to session |
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55 else |
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56 -- Need to establish the connection |
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57 end |
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58 end |
| 30 | 59 end |
| 60 | |
| 61 function handle_stanza_nodest(stanza) | |
| 62 if stanza.name == "iq" then | |
| 63 handle_stanza_iq_no_to(session, stanza); | |
| 64 elseif stanza.name == "presence" then | |
| 65 -- Broadcast to this user's contacts | |
| 66 handle_stanza_presence_broadcast(session, stanza); | |
| 67 -- also, if it is initial presence, send out presence probes | |
| 68 if not session.last_presence then | |
| 69 handle_stanza_presence_probe_broadcast(session, stanza); | |
| 70 end | |
| 71 session.last_presence = stanza; | |
| 72 elseif stanza.name == "message" then | |
| 73 -- Treat as if message was sent to bare JID of the sender | |
| 74 handle_stanza_to_local_user(stanza); | |
| 75 end | |
| 76 end | |
| 77 | |
| 78 function handle_stanza_tolocal(stanza) | |
| 79 local node, host, resource = jid.split(stanza.attr.to); | |
| 80 if host and hosts[host] and hosts[host].type == "local" then | |
| 81 -- Is a local host, handle internally | |
| 82 if node then | |
| 83 -- Is a local user, send to their session | |
| 84 log("debug", "Routing stanza to %s@%s", node, host); | |
| 85 if not session.username then return; end --FIXME: Correct response when trying to use unauthed stream is what? | |
| 86 handle_stanza_to_local_user(stanza); | |
| 87 else | |
| 88 -- Is sent to this server, let's handle it... | |
| 89 log("debug", "Routing stanza to %s", host); | |
| 90 handle_stanza_to_server(stanza, session); | |
| 91 end | |
| 92 end | |
| 93 end | |
| 94 | |
| 95 function handle_stanza_toremote(stanza) | |
| 96 log("error", "Stanza bound for remote host, but s2s is not implemented"); | |
| 97 end | |
| 98 | |
| 99 | |
| 100 --[[ | |
| 101 local function route_c2s_stanza(session, stanza) | |
| 102 stanza.attr.from = session.full_jid; | |
| 103 if not stanza.attr.to and session.username then | |
| 104 -- Has no 'to' attribute, handle internally | |
| 105 if stanza.name == "iq" then | |
| 106 handle_stanza_iq_no_to(session, stanza); | |
| 107 elseif stanza.name == "presence" then | |
| 108 -- Broadcast to this user's contacts | |
| 109 handle_stanza_presence_broadcast(session, stanza); | |
| 110 -- also, if it is initial presence, send out presence probes | |
| 111 if not session.last_presence then | |
| 112 handle_stanza_presence_probe_broadcast(session, stanza); | |
| 113 end | |
| 114 session.last_presence = stanza; | |
| 115 elseif stanza.name == "message" then | |
| 116 -- Treat as if message was sent to bare JID of the sender | |
| 117 handle_stanza_to_local_user(stanza); | |
| 118 end | |
| 119 end | |
| 120 local node, host, resource = jid.split(stanza.attr.to); | |
| 121 if host and hosts[host] and hosts[host].type == "local" then | |
| 122 -- Is a local host, handle internally | |
| 123 if node then | |
| 124 -- Is a local user, send to their session | |
| 125 if not session.username then return; end --FIXME: Correct response when trying to use unauthed stream is what? | |
| 126 handle_stanza_to_local_user(stanza); | |
| 127 else | |
| 128 -- Is sent to this server, let's handle it... | |
| 129 handle_stanza_to_server(stanza, session); | |
| 130 end | |
| 131 else | |
| 132 -- Is not for us or a local user, route accordingly | |
| 133 route_s2s_stanza(stanza); | |
| 134 end | |
| 135 end | |
| 136 | |
| 137 function handle_stanza_no_to(session, stanza) | |
| 138 if not stanza.attr.id then log("warn", "<iq> without id attribute is invalid"); end | |
| 139 local xmlns = (stanza.tags[1].attr and stanza.tags[1].attr.xmlns); | |
| 140 if stanza.attr.type == "get" or stanza.attr.type == "set" then | |
| 141 if iq_handlers[xmlns] then | |
| 142 if iq_handlers[xmlns](stanza) then return; end; -- If handler returns true, it handled it | |
| 143 end | |
| 144 -- Oh, handler didn't handle it. Need to send service-unavailable now. | |
| 145 log("warn", "Unhandled namespace: "..xmlns); | |
| 146 session:send(format("<iq type='error' id='%s'><error type='cancel'><service-unavailable/></error></iq>", stanza.attr.id)); | |
| 147 return; -- All done! | |
| 148 end | |
| 149 end | |
| 150 | |
| 151 function handle_stanza_to_local_user(stanza) | |
| 152 if stanza.name == "message" then | |
| 153 handle_stanza_message_to_local_user(stanza); | |
| 154 elseif stanza.name == "presence" then | |
| 155 handle_stanza_presence_to_local_user(stanza); | |
| 156 elseif stanza.name == "iq" then | |
| 157 handle_stanza_iq_to_local_user(stanza); | |
| 158 end | |
| 159 end | |
| 160 | |
| 161 function handle_stanza_message_to_local_user(stanza) | |
| 162 local node, host, resource = stanza.to.node, stanza.to.host, stanza.to.resource; | |
| 163 local destuser = hosts[host].sessions[node]; | |
| 164 if destuser then | |
| 165 if resource and destuser[resource] then | |
| 166 destuser[resource]:send(stanza); | |
| 167 else | |
| 168 -- Bare JID, or resource offline | |
| 169 local best_session; | |
| 170 for resource, session in pairs(destuser.sessions) do | |
| 171 if not best_session then best_session = session; | |
| 172 elseif session.priority >= best_session.priority and session.priority >= 0 then | |
| 173 best_session = session; | |
| 174 end | |
| 175 end | |
| 176 if not best_session then | |
| 177 offlinemessage.new(node, host, stanza); | |
| 178 else | |
| 179 print("resource '"..resource.."' was not online, have chosen to send to '"..best_session.username.."@"..best_session.host.."/"..best_session.resource.."'"); | |
| 180 destuser[best_session]:send(stanza); | |
| 181 end | |
| 182 end | |
| 183 else | |
| 184 -- User is offline | |
| 185 offlinemessage.new(node, host, stanza); | |
| 186 end | |
| 187 end | |
| 188 | |
| 189 function handle_stanza_presence_to_local_user(stanza) | |
| 190 local node, host, resource = stanza.to.node, stanza.to.host, stanza.to.resource; | |
| 191 local destuser = hosts[host].sessions[node]; | |
| 192 if destuser then | |
| 193 if resource then | |
| 194 if destuser[resource] then | |
| 195 destuser[resource]:send(stanza); | |
| 196 else | |
| 197 return; | |
| 198 end | |
| 199 else | |
| 200 -- Broadcast to all user's resources | |
| 201 for resource, session in pairs(destuser.sessions) do | |
| 202 session:send(stanza); | |
| 203 end | |
| 204 end | |
| 205 end | |
| 206 end | |
| 207 | |
| 208 function handle_stanza_iq_to_local_user(stanza) | |
| 209 | |
| 210 end | |
| 211 | |
| 212 function foo() | |
| 213 local node, host, resource = stanza.to.node, stanza.to.host, stanza.to.resource; | |
| 214 local destuser = hosts[host].sessions[node]; | |
| 215 if destuser and destuser.sessions then | |
| 216 -- User online | |
| 217 if resource and destuser.sessions[resource] then | |
| 218 stanza.to:send(stanza); | |
| 219 else | |
| 220 --User is online, but specified resource isn't (or no resource specified) | |
| 221 local best_session; | |
| 222 for resource, session in pairs(destuser.sessions) do | |
| 223 if not best_session then best_session = session; | |
| 224 elseif session.priority >= best_session.priority and session.priority >= 0 then | |
| 225 best_session = session; | |
| 226 end | |
| 227 end | |
| 228 if not best_session then | |
| 229 offlinemessage.new(node, host, stanza); | |
| 230 else | |
| 231 print("resource '"..resource.."' was not online, have chosen to send to '"..best_session.username.."@"..best_session.host.."/"..best_session.resource.."'"); | |
| 232 resource = best_session.resource; | |
| 233 end | |
| 234 end | |
| 235 if destuser.sessions[resource] == session then | |
| 236 log("warn", "core", "Attempt to send stanza to self, dropping..."); | |
| 237 else | |
| 238 print("...sending...", tostring(stanza)); | |
| 239 --destuser.sessions[resource].conn.write(tostring(data)); | |
| 240 print(" to conn ", destuser.sessions[resource].conn); | |
| 241 destuser.sessions[resource].conn.write(tostring(stanza)); | |
| 242 print("...sent") | |
| 243 end | |
| 244 elseif stanza.name == "message" then | |
| 245 print(" ...will be stored offline"); | |
| 246 offlinemessage.new(node, host, stanza); | |
| 247 elseif stanza.name == "iq" then | |
| 248 print(" ...is an iq"); | |
| 249 stanza.from:send(st.reply(stanza) | |
| 250 :tag("error", { type = "cancel" }) | |
| 251 :tag("service-unavailable", { xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas" })); | |
| 252 end | |
| 253 end | |
| 254 | |
| 255 -- Broadcast a presence stanza to all of a user's contacts | |
| 256 function handle_stanza_presence_broadcast(session, stanza) | |
| 257 if session.roster then | |
| 258 local initial_presence = not session.last_presence; | |
| 259 session.last_presence = stanza; | |
| 260 | |
| 261 -- Broadcast presence and probes | |
| 262 local broadcast = st.presence({ from = session.full_jid, type = stanza.attr.type }); | |
| 263 | |
| 264 for child in stanza:childtags() do | |
| 265 broadcast:add_child(child); | |
| 266 end | |
| 267 for contact_jid in pairs(session.roster) do | |
| 268 broadcast.attr.to = contact_jid; | |
| 269 send_to(contact_jid, broadcast); | |
| 270 if initial_presence then | |
| 271 local node, host = jid.split(contact_jid); | |
| 272 if hosts[host] and hosts[host].type == "local" then | |
| 273 local contact = hosts[host].sessions[node] | |
| 274 if contact then | |
| 275 local pres = st.presence { to = session.full_jid }; | |
| 276 for resource, contact_session in pairs(contact.sessions) do | |
| 277 if contact_session.last_presence then | |
| 278 pres.tags = contact_session.last_presence.tags; | |
| 279 pres.attr.from = contact_session.full_jid; | |
| 280 send(pres); | |
| 281 end | |
| 282 end | |
| 283 end | |
| 284 --FIXME: Do we send unavailable if they are offline? | |
| 285 else | |
| 286 probe.attr.to = contact; | |
| 287 send_to(contact, probe); | |
| 288 end | |
| 289 end | |
| 290 end | |
| 291 | |
| 292 -- Probe for our contacts' presence | |
| 293 end | |
| 294 end | |
| 295 | |
| 296 -- Broadcast presence probes to all of a user's contacts | |
| 297 function handle_stanza_presence_probe_broadcast(session, stanza) | |
| 298 end | |
| 299 | |
| 300 -- | |
| 301 function handle_stanza_to_server(stanza) | |
| 302 end | |
| 303 | |
| 304 function handle_stanza_iq_no_to(session, stanza) | |
| 305 end | |
| 306 ]] |
