1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
local hosts = hosts;
local core_process_stanza = function(a, b) core_process_stanza(a, b); end
local format = string.format;
local t_insert, t_sort = table.insert, table.sort;
local get_traceback = debug.traceback;
local tostring, pairs, ipairs, getmetatable, newproxy, type, error, tonumber, setmetatable
= tostring, pairs, ipairs, getmetatable, newproxy, type, error, tonumber, setmetatable;
local initialize_filters = require "util.filters".initialize;
local wrapclient = require "net.server".wrapclient;
local st = require "stanza";
local stanza = st.stanza;
local nameprep = require "util.encodings".stringprep.nameprep;
local cert_verify_identity = require "util.x509".verify_identity;
local new_ip = require "util.ip".new_ip;
local rfc3484_dest = require "util.rfc3484".destination;
local fire_event = prosody.events.fire_event;
local uuid_gen = require "util.uuid".generate;
local logger_init = require "util.logger".init;
local log = logger_init("s2smanager");
local sha256_hash = require "util.hashes".sha256;
local adns, dns = require "net.adns", require "net.dns";
local config = require "core.configmanager";
local dns_timeout = config.get("*", "core", "dns_timeout") or 15;
local cfg_sources = config.get("*", "core", "s2s_interface")
or config.get("*", "core", "interface");
local sources;
--FIXME: s2sout should create its own resolver w/ timeout
dns.settimeout(dns_timeout);
local prosody = _G.prosody;
incoming_s2s = {};
prosody.incoming_s2s = incoming_s2s;
local incoming_s2s = incoming_s2s;
module "s2smanager"
local open_sessions = 0;
function new_incoming(conn)
local session = { conn = conn, type = "s2sin_unauthed", direction = "incoming", hosts = {} };
if true then
session.trace = newproxy(true);
getmetatable(session.trace).__gc = function () open_sessions = open_sessions - 1; end;
end
open_sessions = open_sessions + 1;
session.log = logger_init("s2sin"..tostring(conn):match("[a-f0-9]+$"));
incoming_s2s[session] = true;
return session;
end
function new_outgoing(from_host, to_host, connect)
local host_session = { to_host = to_host, from_host = from_host, host = from_host,
notopen = true, type = "s2sout_unauthed", direction = "outgoing" };
hosts[from_host].s2sout[to_host] = host_session;
local conn_name = "s2sout"..tostring(host_session):match("[a-f0-9]*$");
host_session.log = logger_init(conn_name);
return host_session;
end
function make_authenticated(session, host)
if not session.secure then
local local_host = session.direction == "incoming" and session.to_host or session.from_host;
if config.get(local_host, "core", "s2s_require_encryption") then
session:close({
condition = "policy-violation",
text = "Encrypted server-to-server communication is required but was not "
..((session.direction == "outgoing" and "offered") or "used")
});
end
end
if session.type == "s2sout_unauthed" then
session.type = "s2sout";
elseif session.type == "s2sin_unauthed" then
session.type = "s2sin";
if host then
if not session.hosts[host] then session.hosts[host] = {}; end
session.hosts[host].authed = true;
end
elseif session.type == "s2sin" and host then
if not session.hosts[host] then session.hosts[host] = {}; end
session.hosts[host].authed = true;
else
return false;
end
session.log("debug", "connection %s->%s is now authenticated for %s", session.from_host or "(unknown)", session.to_host or "(unknown)", host);
mark_connected(session);
return true;
end
-- Stream is authorised, and ready for normal stanzas
function mark_connected(session)
local sendq, send = session.sendq, session.sends2s;
local from, to = session.from_host, session.to_host;
session.log("info", session.direction.." s2s connection "..from.."->"..to.." complete");
local event_data = { session = session };
if session.type == "s2sout" then
prosody.events.fire_event("s2sout-established", event_data);
hosts[session.from_host].events.fire_event("s2sout-established", event_data);
else
prosody.events.fire_event("s2sin-established", event_data);
hosts[session.to_host].events.fire_event("s2sin-established", event_data);
end
if session.direction == "outgoing" then
if sendq then
session.log("debug", "sending "..#sendq.." queued stanzas across new outgoing connection to "..session.to_host);
for i, data in ipairs(sendq) do
send(data[1]);
sendq[i] = nil;
end
session.sendq = nil;
end
session.ip_hosts = nil;
session.srv_hosts = nil;
end
end
local resting_session = { -- Resting, not dead
destroyed = true;
type = "s2s_destroyed";
open_stream = function (session)
session.log("debug", "Attempt to open stream on resting session");
end;
close = function (session)
session.log("debug", "Attempt to close already-closed session");
end;
filter = function (type, data) return data; end;
}; resting_session.__index = resting_session;
function retire_session(session, reason)
local log = session.log or log;
for k in pairs(session) do
if k ~= "trace" and k ~= "log" and k ~= "id" then
session[k] = nil;
end
end
session.destruction_reason = reason;
function session.send(data) log("debug", "Discarding data sent to resting session: %s", tostring(data)); end
function session.data(data) log("debug", "Discarding data received from resting session: %s", tostring(data)); end
return setmetatable(session, resting_session);
end
function destroy_session(session, reason)
if session.destroyed then return; end
(session.log or log)("debug", "Destroying "..tostring(session.direction).." session "..tostring(session.from_host).."->"..tostring(session.to_host)..(reason and (": "..reason) or ""));
if session.direction == "outgoing" then
hosts[session.from_host].s2sout[session.to_host] = nil;
session:bounce_sendq(reason);
elseif session.direction == "incoming" then
incoming_s2s[session] = nil;
end
local event_data = { session = session, reason = reason };
if session.type == "s2sout" then
prosody.events.fire_event("s2sout-destroyed", event_data);
if hosts[session.from_host] then
hosts[session.from_host].events.fire_event("s2sout-destroyed", event_data);
end
elseif session.type == "s2sin" then
prosody.events.fire_event("s2sin-destroyed", event_data);
if hosts[session.to_host] then
hosts[session.to_host].events.fire_event("s2sin-destroyed", event_data);
end
end
retire_session(session, reason); -- Clean session until it is GC'd
return true;
end
return _M;
|
