prosody
4c0dcd245d34
core/s2smanager.lua

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core/s2smanager.lua @ 148:4c0dcd245d34 s2s

s2s works! \o/ \o/
author Matthew Wild <mwild1@gmail.com>
date Fri, 24 Oct 2008 07:27:36 +0100
child 157:f4e9b6ec34b0
comparison
equal deleted inserted replaced
147:ccebb2720741 148:4c0dcd245d34
1
2 local hosts = hosts;
3 local sessions = sessions;
4 local socket = require "socket";
5 local format = string.format;
6 local tostring, pairs, ipairs, getmetatable, print, newproxy, error, tonumber
7 = tostring, pairs, ipairs, getmetatable, print, newproxy, error, tonumber;
8
9 local connlisteners_get = require "net.connlisteners".get;
10 local wraptlsclient = require "net.server".wraptlsclient;
11 local modulemanager = require "core.modulemanager";
12
13 local uuid_gen = require "util.uuid".generate;
14
15 local logger_init = require "util.logger".init;
16
17 local log = logger_init("s2smanager");
18
19 local md5_hash = require "util.hashes".md5;
20
21 local dialback_secret = "This is very secret!!! Ha!";
22
23 module "s2smanager"
24
25 function connect_host(from_host, to_host)
26 end
27
28 function send_to_host(from_host, to_host, data)
29 if hosts[to_host] then
30 -- Write to connection
31 hosts[to_host].send(data);
32 log("debug", "stanza sent over s2s");
33 else
34 log("debug", "opening a new outgoing connection for this stanza");
35 local host_session = new_outgoing(from_host, to_host);
36 -- Store in buffer
37 host_session.sendq = { data };
38 end
39 end
40
41 function disconnect_host(host)
42
43 end
44
45 local open_sessions = 0;
46
47 function new_incoming(conn)
48 local session = { conn = conn, priority = 0, type = "s2sin_unauthed", direction = "incoming" };
49 if true then
50 session.trace = newproxy(true);
51 getmetatable(session.trace).__gc = function () open_sessions = open_sessions - 1; print("s2s session got collected, now "..open_sessions.." s2s sessions are allocated") end;
52 end
53 open_sessions = open_sessions + 1;
54 local w = conn.write;
55 session.send = function (t) w(tostring(t)); end
56 return session;
57 end
58
59 function new_outgoing(from_host, to_host)
60 local host_session = { to_host = to_host, from_host = from_host, notopen = true, type = "s2sout_unauthed", direction = "outgoing" };
61 hosts[to_host] = host_session;
62
63 local cl = connlisteners_get("xmppserver");
64
65 local conn, handler = socket.tcp()
66 --FIXME: Below parameters (ports/ip) are incorrect (use SRV)
67 conn:connect(to_host, 5269);
68 conn = wraptlsclient(cl, conn, to_host, 5269, 0, 1, hosts[from_host].ssl_ctx );
69 host_session.conn = conn;
70
71 -- Register this outgoing connection so that xmppserver_listener knows about it
72 -- otherwise it will assume it is a new incoming connection
73 cl.register_outgoing(conn, host_session);
74
75 do
76 local conn_name = "s2sout"..tostring(conn):match("[a-f0-9]*$");
77 host_session.log = logger_init(conn_name);
78 end
79
80 local w = conn.write;
81 host_session.send = function (t) w(tostring(t)); end
82
83 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));
84
85 return host_session;
86 end
87
88 function streamopened(session, attr)
89 session.log("debug", "s2s stream opened");
90 local send = session.send;
91
92 session.version = tonumber(attr.version) or 0;
93 if session.version >= 1.0 and not (attr.to and attr.from) then
94 print("to: "..tostring(attr.to).." from: "..tostring(attr.from));
95 --error(session.to_host.." failed to specify 'to' or 'from' hostname as per RFC");
96 log("warn", (session.to_host or "(unknown)").." failed to specify 'to' or 'from' hostname as per RFC");
97 end
98
99 if session.direction == "incoming" then
100 -- Send a reply stream header
101
102 for k,v in pairs(attr) do print("", tostring(k), ":::", tostring(v)); end
103
104 session.to_host = attr.to;
105 session.from_host = attr.from;
106
107 session.streamid = uuid_gen();
108 print(session, session.from_host, "incoming s2s stream opened");
109 send("<?xml version='1.0'?>");
110 send(format("<stream:stream xmlns='jabber:server' xmlns:db='jabber:server:dialback' xmlns:stream='http://etherx.jabber.org/streams' id='%s' from='%s'>", session.streamid, session.to_host));
111 if session.from_host then
112 -- Need to perform dialback to check identity
113 print("to: "..tostring(attr.to).." from: "..tostring(attr.from));
114 print("Need to do dialback here you know!!");
115 end
116 elseif session.direction == "outgoing" then
117 -- If we are just using the connection for verifying dialback keys, we won't try and auth it
118 if not session.dialback_verifying then
119 -- generate dialback key
120 if not attr.id then error("stream response did not give us a streamid!!!"); end
121 session.streamid = attr.id;
122 session.dialback_key = generate_dialback(session.streamid, session.to_host, session.from_host);
123 session.send(format("<db:result from='%s' to='%s'>%s</db:result>", session.from_host, session.to_host, session.dialback_key));
124 session.log("info", "sent dialback key on outgoing s2s stream");
125 else
126 mark_connected(session);
127 end
128 end
129 --[[
130 local features = {};
131 modulemanager.fire_event("stream-features-s2s", session, features);
132
133 send("<stream:features>");
134
135 for _, feature in ipairs(features) do
136 send(tostring(feature));
137 end
138
139 send("</stream:features>");]]
140 log("info", "s2s stream opened successfully");
141 session.notopen = nil;
142 end
143
144 function generate_dialback(id, to, from)
145 return md5_hash(id..to..from..dialback_secret); -- FIXME: See XEP-185 and XEP-220
146 end
147
148 function verify_dialback(id, to, from, key)
149 return key == generate_dialback(id, to, from);
150 end
151
152 function make_authenticated(session)
153 if session.type == "s2sout_unauthed" then
154 session.type = "s2sout";
155 elseif session.type == "s2sin_unauthed" then
156 session.type = "s2sin";
157 else
158 return false;
159 end
160 session.log("info", "connection is now authenticated");
161
162 mark_connected(session);
163
164 return true;
165 end
166
167 function mark_connected(session)
168 local sendq, send = session.sendq, session.send;
169 if sendq then
170 session.log("debug", "sending queued stanzas across new connection");
171 for _, data in ipairs(sendq) do
172 session.log("debug", "sending: %s", tostring(data));
173 send(data);
174 end
175 end
176 end
177
178 return _M;