Tue, 18 Nov 2008 19:44:54 +0000
session:disconnect() -> session:close() for consistency with other Lua APIs
148 | 1 | |
2 | local hosts = hosts; | |
3 | local sessions = sessions; | |
4 | local socket = require "socket"; | |
5 | local format = string.format; | |
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6 | local t_insert = table.insert; |
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7 | local get_traceback = debug.traceback; |
148 | 8 | local tostring, pairs, ipairs, getmetatable, print, newproxy, error, tonumber |
9 | = tostring, pairs, ipairs, getmetatable, print, newproxy, error, tonumber; | |
10 | ||
11 | local connlisteners_get = require "net.connlisteners".get; | |
12 | local wraptlsclient = require "net.server".wraptlsclient; | |
13 | local modulemanager = require "core.modulemanager"; | |
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14 | local st = require "stanza"; |
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15 | local stanza = st.stanza; |
148 | 16 | |
17 | local uuid_gen = require "util.uuid".generate; | |
18 | ||
19 | local logger_init = require "util.logger".init; | |
20 | ||
21 | local log = logger_init("s2smanager"); | |
22 | ||
23 | local md5_hash = require "util.hashes".md5; | |
24 | ||
25 | local dialback_secret = "This is very secret!!! Ha!"; | |
26 | ||
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27 | local srvmap = { ["gmail.com"] = "talk.google.com", ["identi.ca"] = "hampton.controlezvous.ca", ["cdr.se"] = "jabber.cdr.se" }; |
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28 | |
148 | 29 | module "s2smanager" |
30 | ||
31 | function send_to_host(from_host, to_host, data) | |
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Fixed s2s manager's send queue to not store recieved stanza objects (as these can chnage after the send call)
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32 | if data.name then data = tostring(data); end |
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33 | local host = hosts[from_host].s2sout[to_host]; |
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34 | if host then |
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35 | -- We have a connection to this host already |
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36 | if host.type == "s2sout_unauthed" then |
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37 | host.log("debug", "trying to send over unauthed s2sout to "..to_host..", authing it now..."); |
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38 | if not host.notopen and not host.dialback_key then |
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39 | host.log("debug", "dialback had not been initiated"); |
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40 | initiate_dialback(host); |
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41 | end |
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42 | |
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43 | -- Queue stanza until we are able to send it |
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44 | if host.sendq then t_insert(host.sendq, data); |
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45 | else host.sendq = { data }; end |
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46 | elseif host.type == "local" or host.type == "component" then |
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47 | log("error", "Trying to send a stanza to ourselves??") |
256 | 48 | log("error", "Traceback: %s", get_traceback()); |
258
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49 | log("error", "Stanza: %s", tostring(data)); |
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50 | else |
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51 | (host.log or log)("debug", "going to send stanza to "..to_host.." from "..from_host); |
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Just committing this warning, because I want to know if the problem really affects us
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52 | -- FIXME |
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53 | if host.from_host ~= from_host then |
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54 | log("error", "WARNING! This might, possibly, be a bug, but it might not..."); |
331 | 55 | log("error", "We are going to send from %s instead of %s", tostring(host.from_host), tostring(from_host)); |
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56 | end |
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57 | host.sends2s(data); |
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58 | host.log("debug", "stanza sent over "..host.type); |
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59 | end |
148 | 60 | else |
61 | log("debug", "opening a new outgoing connection for this stanza"); | |
62 | local host_session = new_outgoing(from_host, to_host); | |
63 | -- Store in buffer | |
64 | host_session.sendq = { data }; | |
65 | end | |
66 | end | |
67 | ||
68 | local open_sessions = 0; | |
69 | ||
70 | function new_incoming(conn) | |
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71 | local session = { conn = conn, type = "s2sin_unauthed", direction = "incoming" }; |
148 | 72 | if true then |
73 | session.trace = newproxy(true); | |
74 | getmetatable(session.trace).__gc = function () open_sessions = open_sessions - 1; print("s2s session got collected, now "..open_sessions.." s2s sessions are allocated") end; | |
75 | end | |
76 | open_sessions = open_sessions + 1; | |
77 | local w = conn.write; | |
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78 | session.sends2s = function (t) w(tostring(t)); end |
148 | 79 | return session; |
80 | end | |
81 | ||
82 | function new_outgoing(from_host, to_host) | |
83 | local host_session = { to_host = to_host, from_host = from_host, notopen = true, type = "s2sout_unauthed", direction = "outgoing" }; | |
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84 | hosts[from_host].s2sout[to_host] = host_session; |
148 | 85 | local cl = connlisteners_get("xmppserver"); |
86 | ||
87 | local conn, handler = socket.tcp() | |
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88 | |
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89 | --FIXME: Below parameters (ports/ip) are incorrect (use SRV) |
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90 | to_host = srvmap[to_host] or to_host; |
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91 | |
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92 | conn:settimeout(0); |
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93 | local success, err = conn:connect(to_host, 5269); |
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94 | if not success then |
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95 | log("warn", "s2s connect() failed: %s", err); |
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96 | end |
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97 | |
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98 | conn = wraptlsclient(cl, conn, to_host, 5269, 0, 1, hosts[from_host].ssl_ctx ); |
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99 | host_session.conn = conn; |
259 | 100 | |
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101 | -- Register this outgoing connection so that xmppserver_listener knows about it |
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102 | -- otherwise it will assume it is a new incoming connection |
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103 | cl.register_outgoing(conn, host_session); |
259 | 104 | |
148 | 105 | do |
106 | local conn_name = "s2sout"..tostring(conn):match("[a-f0-9]*$"); | |
107 | host_session.log = logger_init(conn_name); | |
108 | end | |
109 | ||
110 | local w = conn.write; | |
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111 | host_session.sends2s = function (t) w(tostring(t)); end |
148 | 112 | |
113 | conn.write(format([[<stream:stream xmlns='jabber:server' xmlns:db='jabber:server:dialback' xmlns:stream='http://etherx.jabber.org/streams' from='%s' to='%s' version='1.0'>]], from_host, to_host)); | |
114 | ||
115 | return host_session; | |
116 | end | |
117 | ||
118 | function streamopened(session, attr) | |
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119 | local send = session.sends2s; |
148 | 120 | |
121 | session.version = tonumber(attr.version) or 0; | |
122 | if session.version >= 1.0 and not (attr.to and attr.from) then | |
123 | print("to: "..tostring(attr.to).." from: "..tostring(attr.from)); | |
124 | --error(session.to_host.." failed to specify 'to' or 'from' hostname as per RFC"); | |
125 | log("warn", (session.to_host or "(unknown)").." failed to specify 'to' or 'from' hostname as per RFC"); | |
126 | end | |
127 | ||
128 | if session.direction == "incoming" then | |
129 | -- Send a reply stream header | |
130 | ||
131 | for k,v in pairs(attr) do print("", tostring(k), ":::", tostring(v)); end | |
132 | ||
133 | session.to_host = attr.to; | |
134 | session.from_host = attr.from; | |
135 | ||
136 | session.streamid = uuid_gen(); | |
137 | print(session, session.from_host, "incoming s2s stream opened"); | |
138 | send("<?xml version='1.0'?>"); | |
252 | 139 | send(stanza("stream:stream", { xmlns='jabber:server', ["xmlns:db"]='jabber:server:dialback', ["xmlns:stream"]='http://etherx.jabber.org/streams', id=session.streamid, from=session.to_host }):top_tag()); |
331 | 140 | if session.to_host and not hosts[session.to_host] then |
141 | -- Attempting to connect to a host we don't serve | |
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142 | session:close("host-unknown"); |
331 | 143 | return; |
144 | end | |
148 | 145 | elseif session.direction == "outgoing" then |
146 | -- If we are just using the connection for verifying dialback keys, we won't try and auth it | |
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147 | if not attr.id then error("stream response did not give us a streamid!!!"); end |
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148 | session.streamid = attr.id; |
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149 | |
148 | 150 | if not session.dialback_verifying then |
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151 | initiate_dialback(session); |
148 | 152 | else |
153 | mark_connected(session); | |
154 | end | |
155 | end | |
156 | --[[ | |
157 | local features = {}; | |
158 | modulemanager.fire_event("stream-features-s2s", session, features); | |
159 | ||
160 | send("<stream:features>"); | |
161 | ||
162 | for _, feature in ipairs(features) do | |
163 | send(tostring(feature)); | |
164 | end | |
165 | ||
166 | send("</stream:features>");]] | |
259 | 167 | |
148 | 168 | session.notopen = nil; |
169 | end | |
170 | ||
190
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171 | function initiate_dialback(session) |
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172 | -- generate dialback key |
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173 | session.dialback_key = generate_dialback(session.streamid, session.to_host, session.from_host); |
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174 | session.sends2s(format("<db:result from='%s' to='%s'>%s</db:result>", session.from_host, session.to_host, session.dialback_key)); |
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175 | session.log("info", "sent dialback key on outgoing s2s stream"); |
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176 | end |
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177 | |
148 | 178 | function generate_dialback(id, to, from) |
179 | return md5_hash(id..to..from..dialback_secret); -- FIXME: See XEP-185 and XEP-220 | |
180 | end | |
181 | ||
182 | function verify_dialback(id, to, from, key) | |
183 | return key == generate_dialback(id, to, from); | |
184 | end | |
185 | ||
186 | function make_authenticated(session) | |
187 | if session.type == "s2sout_unauthed" then | |
188 | session.type = "s2sout"; | |
189 | elseif session.type == "s2sin_unauthed" then | |
190 | session.type = "s2sin"; | |
191 | else | |
192 | return false; | |
193 | end | |
194 | session.log("info", "connection is now authenticated"); | |
195 | ||
196 | mark_connected(session); | |
197 | ||
198 | return true; | |
199 | end | |
200 | ||
201 | function mark_connected(session) | |
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202 | local sendq, send = session.sendq, session.sends2s; |
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203 | |
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204 | local from, to = session.from_host, session.to_host; |
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205 | |
190
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206 | session.log("debug", session.direction.." s2s connection "..from.."->"..to.." is now complete"); |
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207 | |
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208 | local send_to_host = send_to_host; |
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209 | function session.send(data) send_to_host(to, from, data); end |
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210 | |
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211 | |
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212 | if session.direction == "outgoing" then |
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213 | if sendq then |
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214 | session.log("debug", "sending "..#sendq.." queued stanzas across new outgoing connection to "..session.to_host); |
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215 | for i, data in ipairs(sendq) do |
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216 | send(data); |
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217 | sendq[i] = nil; |
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218 | end |
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219 | session.sendq = nil; |
148 | 220 | end |
221 | end | |
222 | end | |
223 | ||
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224 | function destroy_session(session) |
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225 | (session.log or log)("info", "Destroying "..tostring(session.direction).." session "..tostring(session.from_host).."->"..tostring(session.to_host)); |
331 | 226 | |
227 | -- FIXME: Flush sendq here/report errors to originators | |
228 | ||
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229 | if session.direction == "outgoing" then |
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230 | hosts[session.from_host].s2sout[session.to_host] = nil; |
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231 | end |
331 | 232 | |
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233 | for k in pairs(session) do |
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234 | if k ~= "trace" then |
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235 | session[k] = nil; |
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236 | end |
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237 | end |
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238 | end |
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239 | |
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Just committing this warning, because I want to know if the problem really affects us
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240 | return _M; |